2024-03-28T18:04:25Z
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/oai
oai:ojs.pkp.sfu.ca:article/2000
2020-05-19T08:11:21Z
AutomotiveExperiences:ART
Natural Gas Vehicle (NGV): Status Teknologi dan Peluang Pengembangannya
Susanto, Roni Muhammad
Setiyo, Muji
Artikel ini menyajikan sebuah review teknologi kendaraan berbahan bakar Compressed Natural Gas (CNG) atau yang dikenal dengan Natural Gas Vehicle (NGV). Metode review yang digunakan adalah dengan membandingkan teknologi Bosch Compressed Natural Gas Powertrain dengan beberapa laporan penelitian yang relevan dari segi output daya mesin, efek lingkungan, dan manfaat secara ekonomi. Hasil studi ini menunjukkan bahwa output daya kendaraan yang dioperasikan dengan CNG lebih rendah daripada yang dioperasikan dengan bensin atau LPG karena efisiensi volumetrik yang rendah. Namun demikian, dari aspek lingkungan dan aspek ekonomi, kendaraan CNG menjanjikan untuk dikembangkan pada masa sekarang dan masa yang akan datang karena faktor kesediaan di alam. Meskipun ketercapaian BEP kendaraan yang dikonversikan dari bensin ke CNG lebih lama daripada LPG, kendala ini dapat diatasi dengan pemberian insentif oleh pemerintah untuk percepatan program konversi.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2000
10.31603/ae.v1i01.2000
Automotive Experiences; Vol 1 No 01 (2018); 1-6
2615-6636
2615-6202
10.31603/ae.v1i01
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2000/1439
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2003
2020-05-19T08:11:18Z
AutomotiveExperiences:ART
Studi Eksperimen Variasi Tekanan Bahan Bakar Terhadap Emisi pada Mesin EFI
Nurrohman, Haryadi
Susanto, Beni
Widodo, Noto
Masalah klasik pada mesin-mesin EFI lama adalah emisi CO dan HC yang cenderung tinggi. Sementara, jika pembakaran diatur dalam campuran miskin (lean mixture), torsi mesin terbaik tidak diperoleh. Untuk itu, artikel ini menyajikan studi eksperimen tentang variasi tekanan bahan bakar dalam fuel rail. Untuk mengatur tekanan, sebuah adjustable pressure regulator diterapkan untuk membuat tekanan awal 1,8 sampai 2,6 Kg/cm² dengan interval 0,2. Hasilnya, emisi CO dan HC meningkat sesuai dengan peningakatan tekanan bahan bakar. Namun demikian, aplikasi adjustable pressure regulator pada mesin Efi memberikan solusi untuk melakukan pengaturan performa dan emisi dengan cara yang sederhana.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2003
10.31603/ae.v1i01.2003
Automotive Experiences; Vol 1 No 01 (2018); 7-12
2615-6636
2615-6202
10.31603/ae.v1i01
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2003/1440
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2006
2020-05-19T08:11:15Z
AutomotiveExperiences:ART
Studi Kasus: Karakteristik Konsumsi Bahan Bakar Sepeda Motor 110 CC Matic dengan CDI BRT
Tarigan, Efrata
Artikel ini menyajikan hasil studi eksperimen karakteristik konsumsi bahan bakar sepeda motor 110 matic dengan CDI BRT dan CDI standar Pengambilan data dilakukan pada putaran 1000, 2000, 3000, dan 4000 rpm dengan model full factorial design. Konsumsi bahan bakar untuk setiap pengujian diukur dalam ml/m. Hasil penelitian ini menunjukkan bahwa konsumsi bahan bakar dengan CDI BRT dibawah CDI standar untuk semua rentang putaran mesin yang diuji. Sebagai kesimpulan, tipikal CDI BRT menjanjikan untuk diterapkan sebagai upaya untuk menghemat bahan bakar.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2006
10.31603/ae.v1i01.2006
Automotive Experiences; Vol 1 No 01 (2018); 20-23
2615-6636
2615-6202
10.31603/ae.v1i01
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2006/1442
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2017
2020-05-19T08:10:43Z
AutomotiveExperiences:ART
Kajian Pengaruh Perubahan Konsentrasi Refrigerant Musicool 134-CO2 Terhadap Performa Katup Ekspansi Tipe TEV
Purnomo, Bagiyo Condro
Priyanto, Bambang Hadi
Artikel ini menyajikan efek penambahan komposisi CO2 dalam sistem refrigerasi kompresi uap yang menggunakan refrigerant Musicool 134. Penelitian dilakukan untuk mengetahui karakteristik katup ekspansi (TEV) dengan variabel komposisi CO2 dari 0%, 1,5%, 3% dan 5% pada kecepatan putar kompresor 1000 dan 1500 rpm, penambahan beban pendinginan serta penggunaan IHE. Pengukuran dilakukan dengan mencatat nilai tekanan dan temperatur masuk serta keluar katup ekspansi. Hasil penelitian menunjukkan bahwa penambahan komposisi CO2 meningkatkan tekanan masuk dan menurunkan tekanan keluar katup ekspansi.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2017
10.31603/ae.v1i03.2017
Automotive Experiences; Vol 1 No 03 (2018); 77-84
2615-6636
2615-6202
10.31603/ae.v1i03
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2017/1273
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2018
2020-05-19T08:11:12Z
AutomotiveExperiences:ART
Pengembangan Sirkuit Security System untuk Meningkatkan Driver Behaviour Control pada Kendaraan
Fahrian, Hanif
Munahar, Suroto
Putra, Dwi Sudarno
Salah satu penyebab kecelakaan jalan raya adalah cara mengemudi yang tidak tepat, misalnya melebihi kecepatan maksimal yang diijinkan. Ketika kendaraan terjadi kecelakaan dapat menimbulkan ledakan yang sangat besar, seperti yang terjadi pada kasus mobil tangki pengangkut bahan bakar. Melihat permasalahan ini perlu solusi untuk memonitor cara mengemudi (driver behaviour). Metode yang diterapkan dengan aplikasi Electronic Control Unit (ECU) security system. Sistem ini dihubungkan dengan inputan Vehicle Speed Sensor (VSS) yang dibangkitkan oleh transmisi dan Thorttle Position Sensor (TPS) dibangkitkan oleh katup throttle valve. Sebuah microcontoller dan GPRS shield digunakan untuk mengirimkan pesan pada pemilik dan pengemudi kendaraan. Hasil yang diperoleh, saat kendaraan berjalan di atas kecepatan 60 km/jam, sistem dapat mengirimkan informasi tanda bahaya melalui sms ke ponsel pemilik kendaraan dan pengemudi.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2018
10.31603/ae.v1i01.2018
Automotive Experiences; Vol 1 No 01 (2018); 13-19
2615-6636
2615-6202
10.31603/ae.v1i01
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2018/1441
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2019
2020-05-19T08:11:10Z
AutomotiveExperiences:ART
Model Sistem Monitoring Minyak Pelumas Digital Dengan Memanfaatkan Gaya Apung Dengan Sensor Load Cell
Miftachul, Arif Nur
Waluyo, Budi
Sistem monitoring minyak pelumas selama ini dilakukan menggunakan deepstick oil yang di pasang pada blok mesin. Salah satu kelemahan monitoring dengan metode ini adalah masih dilakukan secara konvesional sehingga kurang telitinya hasil pengukuran volume. Penelitian ini dilakukan dengan memanfaatkan gaya apung sebagai fungsi luasan dan sensor massa load cell untuk mengkonversi gaya apung menjadi sinyal tegangan listrik.. Fluida memiliki gaya apung besarannya dapat digunakan untuk pengukuran volume. Hasil simulasi model menunjukan bahwa monitoring minyak pelumas digitas dengan menggunakan sensor load cell memiliki potensi untuk dikembangkan sebagai sistem monitor pelumas yang simpel dan akurat.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-04-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2019
10.31603/ae.v1i01.2019
Automotive Experiences; Vol 1 No 01 (2018); 24-29
2615-6636
2615-6202
10.31603/ae.v1i01
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2019/1443
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2020
2020-08-01T13:33:08Z
AutomotiveExperiences:ART
Policy Simulation of Electricity-Based Vehicle Utilization in Indonesia (Electrified Vehicle - HEV, PHEV, BEV and FCEV)
Setiawan, Indra Chandra
In the past few years, the energy consumption of the land transportation sector has increased considerably. One of the breakthroughs by the Government through Presidential Regulation No. 22/2017 concerning General Plan for National Energy (RUEN) is the use of electricity-based vehicles to reduce fuel consumption and achieve energy security. Successful policy making for emerging industries depends on two main factors: the adoption of scientific perspectives and accuracy to predict impacts. Therefore, this review aims to conduct a study of policy simulation methodologies related to the use of electric vehicles in Indonesia. Also, identification of the gaps and limitations of previous research is carried out and recommending an agenda for further research.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-04-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2020
10.31603/ae.v2i1.2020
Automotive Experiences; Vol 2 No 1 (2019); 1-8
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2020/1423
oai:ojs.pkp.sfu.ca:article/2035
2018-09-27T04:35:13Z
AutomotiveExperiences:FM
oai:ojs.pkp.sfu.ca:article/2036
2018-09-27T04:35:20Z
AutomotiveExperiences:BM
oai:ojs.pkp.sfu.ca:article/2242
2020-05-19T08:11:06Z
AutomotiveExperiences:ART
Pembuatan dan Pengujian Media Pembelajaran K3 (Keselamatan dan Kesehatan Kerja) Berbasis Android
Nasrullah, Hamid
Keselamatan dan Kesehatan Kerja (K3) adalah salah satu bentuk upaya untuk menciptakan tempat kerja yang aman, sehat, dan bebas dari pencemaran lingkungan, sehingga dapat melindungi dari kecelakaan kerja, yang pada akhirnya dapat meningkatkan effektifitas dan produktifitas kerja. Metode penelitian yang digunakan adalah metode kualitatif dengan teknik pengumpulan data yang terdiri atas observasi dan analisis data untuk memperkuat hasil penelitian serta dilengkapi dengan kajian pustaka yang memliki relevansi erat dengan pokok permasalahan. Pembuatan media pembelajaran K3 berbasis Android adalah gabungan dari APD (Alat Pelindung Diri) dan simbol-simbol K3 yang dikombinasikan menggunakan smartphone sebagai media pendukung dalam rancang bangun media pembelajaran K3. Hasil pengujian fungsional dan aplikasi menunjukan bahwa : (1) Pengetahuan mahasiswa terhadap K3 mengalami peningkatan sebanyak 100% ; (2) Kemampuan mahasiswa menangkap materi K3 mengalami peningkatan sebanyak 100%; (3) Pemakaian APD dalam bekerja di bengkel mengalami peningkatan 100% ; (4) Pemahaman mahasiswa terhadap simbol-simbol K3 mengalami peningkatan sebanyak 100% ; (5) Kecelakaan kerja yang terjadi zero acident 0%. Bardasarkan hasil yang telah dicapai maka dapat disimpulkan bahwa pembuatan media pembelajaran K3 berbasis android dapat berfungsi dengan baik, efektif dan produktif.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-08-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2242
10.31603/ae.v1i02.2242
Automotive Experiences; Vol 1 No 02 (2018); 43-46
2615-6636
2615-6202
10.31603/ae.v1i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2242/1259
oai:ojs.pkp.sfu.ca:article/2243
2020-05-19T08:11:03Z
AutomotiveExperiences:ART
Investigasi Kesalahan Pembacaan Display Konsumsi Bahan Bakar pada Mobil Datsun Go
Burhanudin, Ade
Septian, Bambang
Waluyo, Budi
Saifudin, Saifudin
Datsun Go merupakan salah satu mobil Low Cost Gren Car (LCGC) yang beredar di Indonesuia. Mobil ini sudah dilengkapi dengan sistem AVG (Average) atau pembacaan rata-rata bahan bakar yang dapat dilihat dengan mudah pada display. Namun demikian laporan terkait konsumsi bahan bakar yang disampaikan pengguna kendaraan sangat bevariasi. Tujuan studi ini adalah untuk menginvestigasikesalahan pembacaan konsumsi bahan bakar pada berbagai kondisi dan dinamika kendaraan. Metode studi ini dengan mensimulasikan berbagai kemiringan dan juga akselerasi kendaraan. Hasil investigasi menunjukan bahwa terjadi kesalahan pembacaan fuel sender karena pengaruh dinamika kendaraan Dinamika dan kondisi kendaraan sangat berpengaruh terhadap pembacaan konsumsi rerata bahan bakar.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-08-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2243
10.31603/ae.v1i02.2243
Automotive Experiences; Vol 1 No 02 (2018); 30-35
2615-6636
2615-6202
10.31603/ae.v1i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2243/1257
oai:ojs.pkp.sfu.ca:article/2244
2020-05-19T08:11:00Z
AutomotiveExperiences:ART
Estimasi Pemborosan Bahan Bakar Akibat Kemacetan Menggunakan Analisis Citra Google Map (Studi Kasus pada Simpang Armada Town Square Mall Magelang)
Prasetyo, Bagas Arif
Rizani, Dwi Ahmad
Setiyo, Muji
Widodo, Noto
Saifudin, Saifudin
Purnomo, Bagiyo Condro
Magelang memiliki tingkat kemacetan yang cukup padat pada beberapa ruas jalan terutama yang menuju pusat kota, salah satunya pada simpang Armada Town Square Mall yang kian hari semakin padat. Oleh karena itu, artikel ini menyajikan analisis pemborosan bahan bakar akibat kemacetan dengan menggunakan citra google map. Dalam penelitian ini metode yang digunakan dengan melihat panjang kemacetan pada google map, kemudian menghitung jumlah dan jenis kendaraan yang terjebak dalam kemacetan. Hasil penelitian menunjukkan bahwa kerugian ekonomi akibat kemacetan lalu lintas di simpang Armada Town Square Mall Magelang dari arah Yogyakarta sebesar 147,13 liter per hari untuk gasoline dan 777,82 liter untuk solar. Estimasi kerugian ekonomi akibat kemacetan lalu lintas dalam rupiah sangat bervariatif menurut jenis bahan bakar yang digunakan. Kerugian minimal dalam satu hari adalah Rp. 4.950.000,- ketika menggunakan premium dan solar subsidi, sedangkan kerugian maksimum adalah Rp. 9.940.000,- ketika menggunakan pertamax turbo dan pertamina dex.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-08-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2244
10.31603/ae.v1i02.2244
Automotive Experiences; Vol 1 No 02 (2018); 36-42
2615-6636
2615-6202
10.31603/ae.v1i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2244/1258
oai:ojs.pkp.sfu.ca:article/2248
2020-05-19T08:10:56Z
AutomotiveExperiences:ART
Efektivitas Problem Based Learning Untuk Peningkatan Kompetensi Sistem Starter di Sekolah Menengah Kejuruan
Wilantara, Bahtiar
Artikel ini menyajikan studi kasus untuk mengetahui efektivitas problem based learning untuk peningkatan kompetensi sistem starter siswa Sekolah Menengah Kejuruan. Jenis penelitian adalah quasi experimental. Subyek penelitian adalah siswa Sekolah Menengah Kejuruan di Yogyakarta. Penelitian menggunakan desain non-equivalent control group. Teknik pengumpulan data menggunakan observasi dan tes. Teknik analisis data menggunakan nonparametrik uji mann-whitney dan wilconox. Hasil penelitian menunjukan bahwa problem based learning efektif untuk peningkatan kompetensi sistem starter siswa Sekolah Menengah Kejuruan.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-08-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2248
10.31603/ae.v1i02.2248
Automotive Experiences; Vol 1 No 02 (2018); 47-52
2615-6636
2615-6202
10.31603/ae.v1i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2248/1260
oai:ojs.pkp.sfu.ca:article/2249
2020-05-19T08:10:54Z
AutomotiveExperiences:ART
Pembelajaran Kooperatif STAD untuk Meningkatkan Kualitas Pembelajaran Praktik Kelistrikan SMK (Studi pada SMK Sriwijaya Karangpucung)
Parikhin, Parikhin
Tujuan penelitian untuk meningkatkan kualitas pembelajaran praktik kelistrikan menggunakan model pembelajaran kooperatif STAD. Desain penelitian Kemmis & Mctaggart yang meliputi perencanaan, tindakan, pengamatan dan refleksi. Proses penelitian dalam tiga siklus, fokus pada kelas XI TKR SMK Sriwijaya. Teknik pengumpulan data dengan observasi, uji kompetensi, dokumentasi dan wawancara. Teknik analisis data proses pembelajaran dengan analisis deskriptif kualitatif dan mengetahuai ketercapaian hasil belajar dengan analisis deskriptif kuantitatif, subjek dalam penelitian ini adalah pendidik dan peserta didik kelas XI TKR. Hasil penelitian terdapat peningkatan bahwa penerapan model pembelajaran kooperatif STAD meningkatkan kualitas pembelajaran praktik jika dilihat dari hasil aktivitas pendidik, peserta didik dan hasil uji kompetensi peserta didik yang meliputi persiapan, proses, hasil, sikap dan waktu kerja
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-08-31
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2249
10.31603/ae.v1i02.2249
Automotive Experiences; Vol 1 No 02 (2018); 53-57
2615-6636
2615-6202
10.31603/ae.v1i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2249/1261
oai:ojs.pkp.sfu.ca:article/2258
2018-09-21T06:41:57Z
AutomotiveExperiences:FM
oai:ojs.pkp.sfu.ca:article/2259
2018-09-21T06:42:06Z
AutomotiveExperiences:BM
oai:ojs.pkp.sfu.ca:article/2333
2020-05-19T08:10:51Z
AutomotiveExperiences:ART
Analisis Temperatur Bahan Bakar pada Reaktor Hydrocarbon Crack System Terhadap Hasil Emisi Engine 4A-FE
Suryono, Edy
Nagoro, Ignatius Henry Adi
Wicaksana, Dimas Yoga Satria
Makalah ini membahas tentang metode Hydocarbon Crack System (HCS) sebagai salah satu metode yang digunakan untuk menghemat bahan bakar dan mengurangi kandungan emisi gas buang. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur bahan bakar terhadap konsumsi bahan bakar dan emisi gas buang. Metode yang digunakan adalah dengan membuat reaktor Hydocarbon Crack System dengan pemanas yang dibuat dari lilitan nikel. Penelitian ini dilakukan dengan mengkabutkan bahan bakar bertekanan pada temperatur 60 °C, 80 °C, dan 100 °C. Uji konsumsi bahan bakar dan uji emisi dilakukan menggunakan engine 4AFE. Hasil pengujian menunjukkan bahwa tingkat emisi gas buang HC, CO, dan CO2 pada bahan bakar pertamax jauh lebih rendah jika dibandingkan dengan bahan bakar pertalite. Tingkat emisi terendah dicapai pada saat bahan bakar tersebut dipanaskan hingga 80 °C. Perubahan temperatur pada reaktor HCS mempengaruhi waktu konsumsi bahan bakar pertamax sebesar 2,91% dibanding dengan pertalite.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-12-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2333
10.31603/ae.v1i03.2333
Automotive Experiences; Vol 1 No 03 (2018); 58-63
2615-6636
2615-6202
10.31603/ae.v1i03
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2333/1269
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2336
2020-05-19T08:10:40Z
AutomotiveExperiences:ART
Pengembangan Video Tutorial Tune Up Sepeda Motor
Pengembangan Video Tutorial Tune Up Sepeda Motor
Efendi, Adhan
Suhartono, Roni
Teknik kejuruan merupakan bidang ilmu vokasi yang fokus pada pengembangan kompetensi agar peserta didik siap kerja. Proses pembelajaran di bidang kejuruan mengalami banyak kendala, salah satunya adalah kurangnya media pembelajaran siswa. Penelitian ini bertujuan untuk mengembangkan media pembelajaran berupa video tune up sepeda motor yang diharapkan dapat membantu memberikan informasi kepada siswa. Artikel ini diharapkan dapat memberi informasi kepada pembaca mengenai cara mengembangkan sebuah media video pembelajaran. Penelitian dilaksanakan dengan metode research and development yang memiliki kevalidan, kepraktisan dan efek potensial dalam kompetensi tune up sepeda motor. Data yang didapat kemudian dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan kevalidan media video tutorial dari segi ahli media dengan rata-rata skor 92.24%. Kevalidan dinilai dari segi ahli materi 1 yaitu dengan rata-rata skor 97.11% dan ahli materi 2 dengan rata-rata skor 77.88%. Kevalidan dari segi output yaitu dengan skor rata-rata 96.3%. Persentase skor tanggapan dari siswa adalah sebesar 84.27%. Media video tutorial untuk kompetensi tune up sepeda motor ini memiliki efek potensial sebesar 52% dari segi materi dan 36% dari segi praktik.
Teknik kejuruan merupakan bidang ilmu vokasi yang fokus pada pengembangan kompetensi agar peserta didik siap kerja. Proses pembelajaran di bidang kejuruan mengalami banyak kendala, salah satunya adalah kurangnya media pembelajaran siswa. Penelitian ini bertujuan untuk mengembangkan media pembelajaran berupa video tune up sepeda motor yang diharapkan dapat membantu memberikan informasi kepada siswa. Artikel ini diharapkan dapat memberi informasi kepada pembaca mengenai cara mengembangkan sebuah media video pembelajaran. Penelitian dilaksanakan dengan metode research and development yang memiliki kevalidan, kepraktisan dan efek potensial dalam kompetensi tune up sepeda motor. Data yang didapat kemudian dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan kevalidan media video tutorial dari segi ahli media dengan rata-rata skor 92.24%. Kevalidan dinilai dari segi ahli materi 1 yaitu dengan rata-rata skor 97.11% dan ahli materi 2 dengan rata-rata skor 77.88%. Kevalidan dari segi output yaitu dengan skor rata-rata 96.3%. Persentase skor tanggapan dari siswa adalah sebesar 84.27%. Media video tutorial untuk kompetensi tune up sepeda motor ini memiliki efek potensial sebesar 52% dari segi materi dan 36% dari segi praktik.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-12-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2336
10.31603/ae.v1i03.2336
Automotive Experiences; Vol 1 No 03 (2018); 86-89
2615-6636
2615-6202
10.31603/ae.v1i03
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2336/1272
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2360
2020-05-19T08:10:46Z
AutomotiveExperiences:ART
Pengaruh Proses Degassiing pada Peleburan Aluminium dengan Tungku Peleburannya
Lutiyatmi, Lutiyatmi
Daryanto, Tri
Porositas gas adalah salah satu masalah yang paling serius dalam pengecoran logam aluminium. Ada beberapa metode degassiing yang telah dipelajari dalam proses pengecoran. Selama peleburan aluminium, senyawa intermetalik (IMC) dapat dibentuk pada antarmuka antara aluminium cair dan baja padat dari lapisan tungku krusibel. Dalam penelitian ini, efek penambahan degassiing dari formasi IMC dipelajari dan diteliti. Spesimen uji berbentuk silinder direndam dalam bak aluminium cair. Perendaman spesimen uji berada di kisaran waktu antara 10 sampai 15 menit. Dua penggunaan degassiing yaitu degassiing garam dapur grasak dan degassiing Natrium Clorida (NaCl) dilakukan untuk menyelidiki efek pada pembentukan IMC. IMC itu diperiksa di bawah miskroskop elektron serta kekerasan IMC dengan mikrovickers hardness. Karena tingginya kandungan hidrogen, spesimen uji yang direndam dalam aluminium cair tanpa degasser memiliki lapisan IMC yang lebih tebal daripada yang lain. Proses degassiing NaCl lebih efektif daripada degassiing garam Grasak untuk mengurangi pertumbuhan IMC. Selanjutnya, fase yang muncul pada daerah IMC yaitu senyawa FeAl dan FeAl3 terbentuk pada spesimen dengan proses tanpa degassiing dan menggunakan degassiing NaCl.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-12-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2360
10.31603/ae.v1i03.2360
Automotive Experiences; Vol 1 No 03 (2018); 70-76
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10.31603/ae.v1i03
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https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2360/1271
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2362
2020-05-19T08:10:49Z
AutomotiveExperiences:ART
Pengaruh Tipe Busi Terhadap Emisi Gas Buang Sepeda Motor
Sriyanto, Joko
Artikel ini menyajikan hasil penelitian tentang pengaruh tipe busi terhadap emisi gas buang sepeda motor. Pengujian dilakukan di Bengkel Prototype Honda Jurdiknik Otomotif FT UNY dengan obyek uji adalah sepeda motor 4 tak 135 cc pada putaran mesin 1500, 3000, dan 5000 rpm. Masing-masing pengujian dilakukan pengulangan sebanyak 3 kali untuk mendapatkan hasil yang lebih akurat. Hasil penelitian menunjukkan bahwa jika dibandingkan dengan pemakaian busi standar, busi platinum menurunkan kadar emisi CO 20% dan HC 41%, busi iridium menurunkan kadar CO 29% dan HC 61%, dan pemakaian busi multi elektrode menurunkan kadar CO 8% dan HC 29%.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2018-12-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2362
10.31603/ae.v1i03.2362
Automotive Experiences; Vol 1 No 03 (2018); 64-69
2615-6636
2615-6202
10.31603/ae.v1i03
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2362/1270
Copyright (c) 2018 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2377
2020-08-01T13:33:08Z
AutomotiveExperiences:ART
Zeolit Alam Sebagai Katalis Pyrolisis Limbah Ban Bekas Menjadi Bahan Bakar Cair
Supriyanto, Supriyanto
Ismanto, Ismanto
Suwito, Nuryo
Penelitian ini bertujuan untuk memanfaatkan energi yang terkandung di dalam ban bekas menjadi bahan bakar cair. Sebuah metode experimental nyata dengan temperatur pyrolisis sebagai variabel bebas dan viskositas, densitas, dan flash point sebagai variabel terikat. Sementara itu, suhu kondensor dan tekanan dijadikan sebagai variabel kontrol. Data menunjukkan adanya pengaruh temperatur terhadap hasil yang didapat, semakin tinggi temperatur, semakin banyak minyak yang diperoleh. Bahan baku juga sangat mempengaruhi jumlah dan kualitas bahan bakar cair yang dihasilkan. Terakhir, penggunaan katalis pada proses pyrolisis ban bekas mengurangi fraksi cairan namun meningkatkan kualitas produk.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-04-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2377
10.31603/ae.v2i1.2377
Automotive Experiences; Vol 2 No 1 (2019); 15-21
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2377/1426
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2472
2020-08-01T13:33:08Z
AutomotiveExperiences:ART
Evaluation of the Application of Occupational Safety and Health (OSH) at the Subang State Polytechnic Laboratory
Efendi, Adhan
Komarudin, Didin
Occupational Health and Safety (OSH) in the industry and vocational education institutions are very important elements to ensure user safety and keep the machines in good condition. Polytechnics must be able to prepare OSH standards in the practical learning process in the laboratory. Therefore, this study aims to evaluate the compliance of the Subang State Polytechnic Laboratory in the application of OSH. Observation data obtained were analyzed by descriptively – quantitatively methods. The results showed that the facilities and application of OSH at the Subang State Polytechnic laboratory received a score of 67.20 so that it was in the feasible category.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-04-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2472
10.31603/ae.v2i1.2472
Automotive Experiences; Vol 2 No 1 (2019); 9-14
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2472/1425
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2631
2021-03-16T10:49:39Z
AutomotiveExperiences:ART
Design of Hydraulic Operated Clutch on Typical Motorcycle
Design of Hydraulic Operated Clutch on Typical Motorcycle
Suyitno, Suyitno
The mechanical operating clutch (threaded wire) on the motorcycle has been complained of having many disadvantages, including operational failure due to broken wire and heavy operating force. Therefore, this article reports the design of the hydraulic operating clutch mechanism on the Yamaha RX-King to replace mechanical systems. Modification is done by adding a master cylinder, fluid hose, release cylinder, and push rod. The calculation results show that the hydraulic operating clutch has the potential to reduce the operational force by up to 6x of mechanical clutch.
Kopling operasi mekanik (kawat ulir) pada sepeda motor telah dikeluhkan memiliki banyak kelemahan, termasuk kegagalan operasional karena kawat putus dan gaya pengoperasian yang berat. Oleh karena itu, artikel ini melaporkan perancangan mekanisme kopling operasi hidrolik pada Yamaha RX- King untuk menggantikan sistem mekanis. Modifikasi dilakukan dengan menambahkan master silinder, pemasangan selang fluida, silinder pembebas kopling, dan push rod. Hasil perhitungan menunjukkan bahwa kopling operasi hidrolik memiliki potensi untuk memperkecil gaya operasional hingga 6x dari gaya operasional untuk kopling mekanik.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2631
10.31603/ae.v2i2.2631
Automotive Experiences; Vol 2 No 2 (2019); 41-46
2615-6636
2615-6202
10.31603/ae.v2i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2631/1491
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2632
2020-10-08T04:59:44Z
AutomotiveExperiences:ART
Torque and Power Characteristics of Single Piston LPG-Fueled Engines on Variations of Ignition Timing
Purnomo, Bagiyo Condro
Widodo, Noto
Liquefied Petroleum Gas (LPG) is an alternative fuel that has all key properties for the Spark Ignition (SI) engine. However, because of its properties, ignition timing on an LPG SI engine needs to be advanced from the reference angle to get the optimum performance. Therefore, this article presents the torque and power characteristics of a single piston LPG engine on variations of ignition timing. Evaluation of engine performance is carried out at the ignition timing of 15O, 17O, and 19O BTDC. The results showed the highest torque for LPG fuel was 10.64 Nm which was achieved at 3500 rpm with ignition timing of 19O BTDC, while the highest power for LPG fuel was 6.9 hp which was achieved at 5936 rpm with ignition timing of 19O BTDC.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-04-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2632
10.31603/ae.v2i1.2632
Automotive Experiences; Vol 2 No 1 (2019); 22-27
2615-6636
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2632/1424
oai:ojs.pkp.sfu.ca:article/2641
2020-08-01T13:33:08Z
AutomotiveExperiences:ART
Uji Cam Modifikasi dan Rocker Arm dengan Roller pada Yamaha 5D9
Wilantara, Bahtiar
Artikel ini menyajikan pengaruh modifikasi cam dan aplikasi roller rocker arm terhadap torsi, daya, dan emisi gas buang sepeda motor. Pengujian torsi dan daya dilakukan dengan dynamometer tipe Rextor Pro Dyno dan pengujian emisi dilakukan dengan engine gas analyzer tipe Heshbon HG-510. Obyek penelitian adalah sepeda motor Yamaha 5D9. Hasil penelitian menunjukan bahwa penggunaan cam modifikasi dan roller rocker arm berpengaruh pada peningkatan torsi sebesar 0,04 Nm dan daya 3,4 kW. Namun demikian, penggunaan cam modifikasi dan roller rocker arm ini sedikit meningkatkan emisi CO dan HC.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-04-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2641
10.31603/ae.v2i1.2641
Automotive Experiences; Vol 2 No 1 (2019); 28-33
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2641/1427
oai:ojs.pkp.sfu.ca:article/2697
2021-03-16T10:49:33Z
AutomotiveExperiences:ART
Has the Electrical Laboratory of Subang State Polytechnic Applied Occupational Safety and Health? Evaluation Report in 2019
Efendi, Adhan
Nugroho, Yohanes Sinung
The application of Occupational Safety and Health (OSH) is essential in vocational institutions that have a high risk of accidents. Therefore, this study aims to evaluate the application of OSH in the Electrical Laboratory of Subang State Polytechnic using a qualitative descriptive method through observation and interviews. The results of this study indicate that aspects of the application of the standard Personal Protective Equipment (PPE) and the use of practical work standards have a score of 66.25% and 62.5%, respectively. Meanwhile, the application of room standards seen from the four main indicators, namely furniture, equipment, educational media, and supporting equipment obtained a total score of 91% (high feasibility). In conclusion, the application of the PPE standard and practical work standard must be considered in detail to improve the overall OSH score.
Penerapan Keselamatan dan Kesehatan Kerja (K3) sangat penting dalam institusi kejuruan yang memiliki risiko kecelakaan tinggi. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi penerapan K3 di Laboratorium Listrik Politeknik Negeri Subang menggunakan metode deskriptif kualitatif melalui observasi dan wawancara. Hasil penelitian ini menunjukkan bahwa aspek penerapan standar Alat Pelindung Diri (APD) dan penggunaan standar kerja praktik memiliki skor masing-masing 66,25% dan 62,5%. Sementara itu, penerapan standar fasilitas ruangan dilihat dari empat indikator utama, yaitu furnitur, peralatan, media pendidikan, dan peralatan pendukung diperoleh skor total 91% (kelayakan tinggi). Kesimpulannya, penerapan standar APD dan standar kerja praktik harus dipertimbangkan secara rinci untuk meningkatkan skor K3 keseluruhan.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2697
10.31603/ae.v2i2.2697
Automotive Experiences; Vol 2 No 2 (2019); 47-52
2615-6636
2615-6202
10.31603/ae.v2i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2697/1492
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2706
2021-03-16T10:49:28Z
AutomotiveExperiences:ART
Design and Application of Special Service Tools (SST) for Telescopic Front Fork
Susilawati, Susilawati
Buchori, Azhis Sholeh
Although simple, removing the front fork telescopic (TFF) seal on a motorcycle without special service tools (SST) can cause work accidents for mechanics and loss for consumers and workshops. Therefore, product development research has been carried out to design a seal remover for TFF. Then, a TRL measurement using Techno-meter was done on the prototype that has been developed. A quick measurement by Techno-meter shows that the prototype has reached level 6 (intermediate), where the prototype has been demonstrated/tested in a relevant environment. In conclusion, through continued work (reviewing products, improvising, and testing prototypes on a larger scale), this prototype promises to be mass-produced as downstream of research products to the market.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2706
10.31603/ae.v2i2.2706
Automotive Experiences; Vol 2 No 2 (2019); 53-58
2615-6636
2615-6202
10.31603/ae.v2i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2706/1493
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2731
2021-03-16T10:49:22Z
AutomotiveExperiences:ART
The Role of Catalysts on Composites Properties: A Case Study on Motorcycle Body Cover
Diptaseptian, Kautzar Rizki
Wijianto, Wijianto
Purboputro, Pramuko Ilmu
Today, modification on motorcycle body cover has become a new automotive business. The main components for modifying the motor body cover are glass fibre, resin and catalyst. Catalysts are substances that can accelerate reactions, the more catalyst composition, the less time it takes to react. Therefore, this study aims to determine the effect of variations in catalysts on composite properties. The test is carried out by giving the catalyst in 4 variations (2.5%, 5%, 10%, and 20%) to 157 BQTN resin. The specimen was tested using ASTM D-256 for impact/hardness, ASTM D-790 for bending, and ASTM D-638 for tensile strength. During this study, we found that the 2.5% catalyst give good results for impact, bending, tensile strength, and also modulus young.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2731
10.31603/ae.v2i2.2731
Automotive Experiences; Vol 2 No 2 (2019); 59-66
2615-6636
2615-6202
10.31603/ae.v2i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2731/1494
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2744
2021-03-16T10:49:17Z
AutomotiveExperiences:ART
Converting Vehicle to LPG/Vigas: A Simple Calculator to Assess Project Feasibility
Widodo, Eko Muh
Rosyidi, Muhammad Imron
Purnomo, Tuessi Ari
Setiyo, Muji
One of the reasons for the slow conversion program from gasoline to LPG/Vigas is the uncertainty of profit or loss. Therefore, this article presents a simple calculator to assess the feasibility of investing in vehicle conversion, from gasoline to LPG/Vigas. Input parameters include estimated annual mileage, fuel consumption, gasoline prices, LPG / Vigas prices, the cost of the converter kit and its installation, engine standardization costs, maintenance costs with gasoline, and maintenance costs with LPG considered to produce output parameters that include Break Even Point (BEP), Payback period (PP), Net Present Value (NPV), and Internal Rate of Return (IRR).
Salah satu dugaan penyebab lambatnya program konversi dari bensin ke LPG/Vigas adalah ketidakpastian laba atau rugi. Oleh karena itu, artikel ini menyajikan sebuah kalkulator sederhana untuk menghitung kelayakan investasi konversi kendaraan, dari bensin ke LPG/Vigas. Parameter input yang mencakup estimated annual mileage, fuel consumption, gasoline prices, LPG / Vigas prices, the cost of the converter kit and its installation, engine standardization costs, maintenance costs with gasoline, and maintenance costs with LPG dipertimbangkan untuk menghasilkan parameter output yang mencakup Break Even Point (BEP), Payback period (PP), Net Present Value (NPV), and Internal Rate of Return (IRR).
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-08-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2744
10.31603/ae.v2i2.2744
Automotive Experiences; Vol 2 No 2 (2019); 34-40
2615-6636
2615-6202
10.31603/ae.v2i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2744/1490
Copyright (c) 2019 Automotive Experiences
oai:ojs.pkp.sfu.ca:article/2766
2021-03-16T10:49:11Z
AutomotiveExperiences:ART
Design and Application of Electronic Tracking Control Systems (ETCS) to Improve Vehicle Safety
Susanto, Roni Muhammad
Nurrochman, Taufik
Munahar, Suroto
Ramadhan, Anwar Ilmar
Fuel and chemical cargo are essential tools for national security. There is the potential for fire and environmental pollution when occurring an accident such as a collision or overturning. On the other hand, cases of cargo theft are also reported frequently. Currently, preventive efforts are carried out by attaching warnings to the vehicle body with stickers, but it is a passive method. Therefore, this article presents a design and application for monitoring vehicles in real-time with Electronic Tracking Control Systems (ETCS). If the vehicle speed is more than 60 km/hour, ETCS will send an SMS to the vehicle owner about the speed and location of the vehicle being monitored. With ETCS, vehicle accidents and misuse can be minimized by quick monitoring and communication between the owner and the driver.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-10-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2766
10.31603/ae.v2i3.2766
Automotive Experiences; Vol 2 No 3 (2019); 67-72
2615-6636
2615-6202
10.31603/ae.v2i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2766/1511
Copyright (c) 2019 Suroto Munahar, Roni Muhammad Susanto, Taufik Nurrochman
oai:ojs.pkp.sfu.ca:article/2984
2021-03-16T10:48:54Z
AutomotiveExperiences:ART
Trends in Lightweight Automotive Materials for Improving Fuel Efficiency and Reducing Carbon Emissions
Refiadi, Gunawan
Aisyah, Iis Siti
Siregar, Januar Parlaungan
Depletion of fossil fuels and greenhouse gases is an essential issue in the development of the automotive industry. From the design stage, material selection becomes the most crucial factor. Therefore, this article discusses the development of lightweight automotive materials for increasing fuel efficiency and reducing carbon emissions. Material reliability is assessed by how much weight reduction can be achieved, production costs, safety and durability. Ferro materials (mild steel, High Strength Steel, and Advanced High Strength Steel), non-ferrous (aluminium and magnesium alloy), and Fiber Reinforced Plastics (FRP) have been proven to reduce the total weight of vehicles up to 12.6%. Confirmation of statistical data from the literature illustrates the possibility of using lightweight material to achieve zero CO2 emission. In addition, the 12.6% weight reduction still meets the vehicle safety factor.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-10-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2984
10.31603/ae.v2i3.2984
Automotive Experiences; Vol 2 No 3 (2019); 78-90
2615-6636
2615-6202
10.31603/ae.v2i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2984/1508
Copyright (c) 2019 Gunawan Refiadi, Iis Siti Aisyah, JAnuar Parlaungan Siregar
oai:ojs.pkp.sfu.ca:article/2991
2021-03-16T10:49:05Z
AutomotiveExperiences:ART
Catalytic Transesterification of Used Cooking Oil to Biodiesel: Effect of Oil-Methanol Molar Ratio and Reaction Time
Ayu, Diah
Aulyana, Rizca
Astuti, Esti Widya
Kusmiyati, Kusmiyati
Hidayati, Nur
Used cooking oil has the potential as biodiesel so that it can reduce environmental pollution. Transesterification of triglycerides in used cooking oil with an alcohol to form methyl esters of fatty acids or biodiesel and glycerol. The type of catalyst is one of the determinants of the transesterification reaction and coal fly ash has the potential to be used as a catalyst in the production of biodiesel. Therefore, this study aims to examine the effect of the oil-methanol ratio and the time of the transesterification of used cooking oil to the yield of biodiesel produced using an alkali-activated fly ash catalyst. Transesterification is carried out at 60 °C, the stirring speed is 700 rpm, and the amount of catalyst load is 4%. The result, the highest yield of biodiesel reached almost 89%. This biodiesel consists of 48.86% methyl oleate and 33.86% methyl palmitate and has a density that meets the Indonesian National Standard, which is 0.85 - 0.90 g/cm3. Finally, the BET test on the fly ash catalyst shows a catalyst surface area of around 104.106 m2/g.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-10-15
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2991
10.31603/ae.v2i3.2991
Automotive Experiences; Vol 2 No 3 (2019); 73-77
2615-6636
2615-6202
10.31603/ae.v2i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2991/1507
Copyright (c) 2019 Diah Ayu, Rizca Aulyana, Esti Widya Astuti, Kusmiyati Kusmiyati, Nur Hidayati
oai:ojs.pkp.sfu.ca:article/2995
2021-03-16T10:49:00Z
AutomotiveExperiences:ART
Diesel-Biodiesel Blend on Engine Performance: An Experimental Study
Arifin, Agus Choirul
Aminudin, Achmad
Putra, Roby Mahendra
This article discusses engine performance using diesel oil and biodiesel obtained from the reaction of vegetable oils with alcohol through the process of alcoholysis. Tests carried out on variations of diesel oil 100% (B0), 10% biodiesel (B10), 20% biodiesel (B20) and 30% biodiesel (B30). Engine performance testing is carried out at 1500 rpm to 4000 rpm at intervals of 500 rpm. The highest torque is obtained at 2000 rpm using B0, B10 and B20 of 310.3 Nm, 306 Nm and 308.1 Nm, respectively. The highest power is obtained at 3000 rpm using B0, B10 and B20 of 114.7 hp, 115.1 hp and 114.9 hp, respectively. The average fuel consumption with B0, B10 and B20 is 1.42 ml/s, 1.54 m/s, and 1.74 ml/s, respectively. B30 fuel cannot be tested on a vehicle due to detonation so that combustion does not occur completely and B30 fuel properties are incompatible with the vehicle being tested.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-10-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2995
10.31603/ae.v2i3.2995
Automotive Experiences; Vol 2 No 3 (2019); 91-96
2615-6636
2615-6202
10.31603/ae.v2i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/2995/1509
Copyright (c) 2019 Agus Choirul Arifin, Achmad Aminudin, Roby Mahendra Putra
oai:ojs.pkp.sfu.ca:article/3004
2021-03-16T10:48:48Z
AutomotiveExperiences:ART
Effect of Cassava Biogasoline on Fuel Consumption and CO Exhaust Emissions
Wahyu, Mujahid
Rahmad, Hadi
Gotama, Gabriel Jeremy
Cassava biogasoline was tested on electronic fuel injection vehicles in urban traffic conditions with varying engine load. Biogasoline tested includes B0, B10, B20, and B30. The engine speed was operated within 750 to 1800 rpm (low-speed range) to simulate urban traffic condition. The engine load was varied through the operation of air conditioner (AC). Fuel consumption was measured in real terms (ml/s) and CO emissions were measured with the Hesbon HG 520 Engine Gas Analyzer (EGA) in the percentage of total exhaust gas. The results showed that B10 has the lowest fuel consumption of 0.24 ml/s in conditions without AC and 0.41 ml/s with AC. Meanwhile, CO emissions tend to be constant with change in the proportion of cassava biogasoline and increased with additional AC load.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2019-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3004
10.31603/ae.v2i3.3004
Automotive Experiences; Vol 2 No 3 (2019); 97-103
2615-6636
2615-6202
10.31603/ae.v2i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3004/1510
Copyright (c) 2019 Mujahid Wahyu, Hadi Rahmat, Gabriel Jeremy Gotama
oai:ojs.pkp.sfu.ca:article/3006
2021-03-16T10:48:38Z
AutomotiveExperiences:ART
Effects of Injection Pressure on Output Power, BTE, SFC and Opacity in a Typical Single-Cylinder Diesel Engine
Majedi, Farid
Setiyaningrum, Denik
Hidayahtullah, Setyono M. T.
Abbas, Aries
On a single-cylinder diesel engine, injection pressure can be adjusted by changing the thickness of the injector shim. In this study, the injection pressure of 180 bar (standard), 190 bar (+1mm shim), and 210 bar (+2mm shim) was examined on a typical single-cylinder diesel engine with pure diesel fuel. The tests carried out at a constant engine speed of 1500 rpm with load variations of 650, 1300, 1950, and 3600 Watts to investigate the effect of injection pressure on output power, brake thermal efficiency (BTE), specific fuel consumption (SFC) and opacity. The results showed that increasing injection pressure could increase the output power by 19.3% and 17.4% by adding 1 mm and 2 mm shims, respectively. SFC decreased 1.97% and 12.3% compared to standard conditions and opacity with 2 mm shim was lower than 1 mm shim. In conclusion, increasing the injection pressure from 180 to 210 bar by adding 2 mm shim can improve the performance of a single cylinder diesel engine, which includes output power, brake thermal efficiency (BTE), specific fuel consumption (SFC) and opacity.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-04-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3006
10.31603/ae.v3i1.3006
Automotive Experiences; Vol 3 No 1 (2020); 20-26
2615-6636
2615-6202
10.31603/ae.v3i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3006/1669
Copyright (c) 2020 Farid Majedi, Denik Setiyaningrum, Setyono M. T. Hidayahtullah, Aries Abbas
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3039
2021-03-16T10:48:33Z
AutomotiveExperiences:ART
Effect of Graphene Oxide on the Characteristics of sPEEK-Chitosan Membranes for Direct Methanol Fuel Cells
Purnama, Herry
Hartoko, Indra Viki
Mujiburohman, Muhammad
Hidayati, Nur
Direct Methanol Fuel Cell (DMFC) can operate at low temperatures, but efficiency and performance are greatly influenced by the material. On the other hand, sulfonated ketone polyether ethers (sPEEK) which have high thermal resistance, ductile, chemical resistance and high mechanical properties, can be combined with chitosan which has good proton conductivity properties. The sPEEK-Chitosan membrane is known to have good mechanical and thermal resistance, but its conductivity is low. The addition of graphene oxide as a filler material can increase the proton conductivity due to its properties. This research was conducted with a completely randomized design of 1 factor to investigate the characteristics of the sPEEK-Chitosan composite membrane as the dependent variable and the addition of graphene oxide solution to the variables 0, 1, 3, 6, and 9% w/w as independent variables. The test results show that the water uptake is in the range of 8.82-33.34%, the swelling degree is in the range of 5.55-20.75%, and the ion exchange capacity is 0.1875-0.2714 meq/g. With this good character, the sPEEK-chitosan membrane with the addition of graphene oxide is a promising candidate for DMFC applications.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-04-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3039
10.31603/ae.v3i1.3039
Automotive Experiences; Vol 3 No 1 (2020); 1-5
2615-6636
2615-6202
10.31603/ae.v3i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3039/1671
Copyright (c) 2020 Herry Purnama, Indra Viki Hartoko, Muhammad Mujiburohman, Nur Hidayati
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3257
2021-03-16T10:48:27Z
AutomotiveExperiences:ART
The Role of Eucalyptus Oil in Crude Palm Oil As Biodiesel Fuel
Marlina, Ena
Basjir, Mochammad
Ichiyanagi, Mitsuhisa
Suzuki, Takashi
Gotama, Gabriel Jeremy
Anggono, Willyanto
Utilization of crude palm oils (CPO) as biodiesel faces difficulty due to their high level of viscosity. Mixing crude eucalyptus oils (CEO) with CPO may reduce the viscosity due to the presence of aromatic compounds in CEO. The single droplet analysis was performed to determine the characteristics of mixing CPO with the CEO. The results showed that the addition of CEO decreased the viscosity due to the presence of intermolecular attractions, thereby leading to more active molecules in the CPO-CEO mixture. Furthermore, the aromatic compound in the CEO helped in decreasing the CPO flash point, while the aromatic compound in the triglyceride molecule weakens the bonds between molecules. The addition of CEO to CPO tends to reduce the ignition delay due to the presence of cineol content in the CEO, which weakens the van der Waals bond in CPO.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-04-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3257
10.31603/ae.v3i1.3257
Automotive Experiences; Vol 3 No 1 (2020); 33-38
2615-6636
2615-6202
10.31603/ae.v3i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3257/1675
Copyright (c) 2020 Ena Marlina, Mochammad Basjir, Mitsuhisa Ichiyanagi, Takashi Suzuki, Gabriel Jeremy Gotama, Willyanto Anggono
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3334
2021-03-16T10:48:22Z
AutomotiveExperiences:ART
LPG-Fueled Vehicles: An Overview of Technology and Market Trend
Kivevele, Thomas
Raja, Thirunavukkarasu
Pirouzfar, Vahid
Waluyo, Budi
Setiyo, Muji
This article presents an overview of the technology status and market trends of LPG-fueled vehicles through the literature approach to re-evaluate their future. In the review, it is discovered that LPG vehicles are globally increasing, though with a concentration in some countries. Of the 25 countries included in the World LPG Association (WLPGA) annual report 2018, Turkey, Poland, India, Ukraine, and Mexico are the countries with the best LPG vehicle trends in average of 23%. Meanwhile, Australia, Japan, South Korea, United Kingdom, the Netherlands, France, and Germany with a long history of implementing LPG as an alternative fuel has experienced a decline in the 2013-2017 period by 17%. This was allegedly due to the penetration of diesel-fueled vehicles over the last ten years. Moreover, developed countries experiencing decline have succeeded in developing electric-based vehicles such as Hybrid Electric Vehicle (HEV), Plug-in hybrid electric vehicle (PHEV), Battery Electric Vehicles (BEV), and Fuel Cell Electric Vehicles (FCEV) due to stringent demands for emission standards.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-04-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3334
10.31603/ae.v3i1.3334
Automotive Experiences; Vol 3 No 1 (2020); 6-19
2615-6636
2615-6202
10.31603/ae.v3i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3334/1674
Copyright (c) 2020 Thomas Kivevele, Thirunavukkarasu Raja, Vahid Pirouzfar, Budi Waluyo, Muji Setiyo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3417
2021-03-16T10:48:43Z
AutomotiveExperiences:ART
Characteristics of Diamond-Like Carbon Coating Using Plasma Assisted Chemical Vapor Deposition on Steel Tool
Saifudin, Saifudin
Purwanto, Wawan
Su, Jerry Chih Tsong
High Speed Steel (HSS) tool is commonly used in engineering applications, especially as cutters. The shortfall of this materials are wear and corrosion. However, these can be reduced by coating the surface of the material. Therefore, the purpose of this research is to investigate the effects of Diamond Like Carbon (DLC) coating, quenching heating treatment, and tempering on the physical and mechanical properties of HSS surface. The physical characteristics which will be investigated is the micro structure, while the mechanical characteristics are hardness, wear and corrosion rate. HSS has variations in their chemical composition (% mass): 0.75–1.5 C, Co >12, V > 5, 4–4.5 Cr,10–20 W and Mo. Furthermore, DLC coating uses Plasma Assisted Chemical Vapor Deposition (PACVD) technique with variation in the duration of coating (1,2,3,4,5 and 6 hours) at temperature of 300℃, with pressure variations of 1.0, 1.2, 1.4, 1.6, 1.8 and 2.0 millibar. DLC coating material be treated from methane or ethane gas, which is streamed into the fire with Argon (Ar). The result shows variations in DLC coating and the hardness grade depends on the coating time and pressure variation. DLC coating for a duration of 4 hours under 1.8 mbar pressure can reduce the surface hardness of HSS tool by 62% accompanied by increased ductility.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-04-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3417
10.31603/ae.v3i1.3417
Automotive Experiences; Vol 3 No 1 (2020); 27-32
2615-6636
2615-6202
10.31603/ae.v3i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3417/1668
Copyright (c) 2020 Saifudin Saifudin, Wawan Purwanto, Jerry Chih Tsong Su
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3481
2021-03-16T10:48:12Z
AutomotiveExperiences:ART
An Experimental Study on the Ignition Behavior of Blended Fuels Droplets with Crude Coconut Oil and Liquid Metal Catalyst
Nanlohy, Hendry Y.
Riupassa, Helen
Rasta, I Made
Yamaguchi, Masaki
This study examines the Ignition characteristics of blended fuel droplets with crude coconut oil and rhodium liquid as a liquid metal catalyst. The ignition behavior was observed by igniting the oil droplet on a junction of a thermocouple, and the droplet evolution recorded with the high-speed camera. The results show that the addition of a liquid metal catalyst successfully reduces the molecular mass of the triglyceride and weakens the bonding force between the carbon chain, and therefore the viscosity and flash point decreases. Moreover, the addition of liquid metal catalysts increased the reactivity of fuel molecules such as C-H, C-C, C = C, and C-O. Changes in the physical properties of the fuel, the geometry of the carbon chain, and molecular mass ease the absorption of heat by the fuel droplet, thereby increasing fuel ignition performances.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-05-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3481
10.31603/ae.v3i2.3481
Automotive Experiences; Vol 3 No 2 (2020); 39-45
2615-6636
2615-6202
10.31603/ae.v3i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3481/1732
Copyright (c) 2020 Hendry Yoshua Nanlohy, Helen Riupassa, I Made Rasta, Masaki Yamaguchi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3530
2021-03-16T10:48:17Z
AutomotiveExperiences:ART
Influence of Compression Ratio on Flywheel Dimension for a Naturally Aspirated Spark Ignition Engine: A Numerical Study
Yudianto, Aan
Li, Peixuan
The proper design of the flywheel undeniably determines in tuning the engine to confirm the better output engine performance. The aim of this study is to mathematically investigate the effect of various values of the compression ratio on some essential parameters to determine the appropriate value for the flywheel dimension. A numerical calculation approach was proposed to eventually determine the dimension of the engine flywheel on a five-cylinder four-stroke Spark Ignition (SI) engine. The various compression ratios of 8.5, 9, 9.5, 10, 10.5, and 11 were selected to perform the calculations. The effects of compression ratio on effective pressure, indicated mean effective pressure (IMEP), dynamic irregularity value of the crankshaft, and the diameter of the flywheel was clearly investigated. The study found that 2.5 increment value of the compression ratio significantly increases the effective pressure of about 41.53% on the starting of the expansion stroke. While at the end of the compression stroke, the rise of effective pressure is about 76.67%, and the changes in dynamic irregularity merely increase by about 1.79%. The same trend applies to the flywheel diameter and width, which increases 2.08% for both.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3530
10.31603/ae.v3i2.3530
Automotive Experiences; Vol 3 No 2 (2020); 46-56
2615-6636
2615-6202
10.31603/ae.v3i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3530/1835
Copyright (c) 2020 Aan Yudianto, Peixuan Li
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3586
2021-03-16T10:48:03Z
AutomotiveExperiences:ART
Design, Implementation, and Evaluation of a Fingerprint-Based Ignition Key for Motorcycles
Supriyono, Heru
Wijayanto, Anugrah Adi
Jailani, Rozita
Tokhi, Mohammad Osman
Cases of motorcycle theft by breaking mechanical key are still a serious problem in some countries. Therefore, this article discusses the process of development, implementation, and evaluation of a fingerprint-based ignition key for motorcycles. To prevent theft, a motorcycle can only be turned on by a registered fingerprint, and an alarm will ring if the sensor receives an unregistered fingerprint. This prototype used the main component of the SEN0188 fingerprint sensor, Arduino Uno microcontroller, LM317 voltage regulator, and the buzzer alarm module. The test results in shaded place showed that the proposed key successfully ignited the engine by 80% with a dry and clean thumb. However, if the thumb is oily or dirty, the success scanning rate is only 36% of 25 attempts. The proposed key also successfully activates a warning alarm if a fingerprint scan attempt fails three times in a row. Test results on potholes, bumpy, dusty, and puddles roads indicate that no hardware has been disturbed or damaged. Therefore, this prototype has the potential to be further developed and implemented on a large scale in an effort to reduce motorcycle theft rates.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-06-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3586
10.31603/ae.v3i2.3586
Automotive Experiences; Vol 3 No 2 (2020); 68-80
2615-6636
2615-6202
10.31603/ae.v3i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3586/1860
Copyright (c) 2020 Heru Supriyono, Anugrah Adi Wijayanto, Rozita Jailani, Mohammad Osman Tokhi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3618
2021-03-16T10:48:08Z
AutomotiveExperiences:ART
An Experimental Study of the Addition of Air Mass Flow Rate Using a 30% Emulsion-Fueled Diesel Engine at High Load
Rosid, Rosid
Sudarmanta, Bambang
Atmaja, Lukman
Özer, Salih
The purpose of this study was to examine the addition of air mass flow rate into the combustion chamber using E30 emulsion fuel (Water 70% + Dex 30% + 2% surfactant tween 80 + span 80 ) on a Diamond DI 800 stationary diesel engine with an engine rotation of 1500 rpm. Characteristics evaluated using Combustion Analyze, and emissions measured with a Gas Analyzer. The results showed the addition of air mass flow rate affected engine performance and emissions with the engine power observed to have decreased by 0.016% while SFC and thermal efficiency increased by 2,077% and 33,053% respectively compared to diesel fuel. Moreover, the BMEP and exhaust temperature also decreased with the most optimum in BMEP found to be 0.02% and exhaust temperature at 285°C while diesel has 358°C. The analysis of the combustion process for E30 emulsion fuel with variations in the air mass flow rate added showed the peak cylinder pressure at high loads was at 0.018 kg/s at a pressure of 5.86 bar. Meanwhile, the optimum heat release rate at high loads was obtained at a variation of 0.013 kg/s. This, therefore, means adding air mass flow rate to the E30 emulsion fuel has the ability to improve performance and reduce engine emissions.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-06-17
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3618
10.31603/ae.v3i2.3618
Automotive Experiences; Vol 3 No 2 (2020); 57-67
2615-6636
2615-6202
10.31603/ae.v3i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3618/1837
Copyright (c) 2020 Rosid Rosid, Bambang Sudarmanta, Lukman Atmaja, Salih Özer
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3692
2021-03-16T10:47:26Z
AutomotiveExperiences:ART
Performance and Fuel Consumption of Diesel Engine Fueled by Diesel Fuel and Waste Plastic Oil Blends: An Experimental Investigation
Sunaryo, Sunaryo
Sesotyo, Priyo Adi
Saputra, Eqwar
Sasmito, Agus Pulung
This study analyzes the performance of the diesel engine in terms of power, torque, specific fuel consumption, and thermal efficiency using diesel and pyrolysis oil. The waste plastic oil (WPO) used in this research was produced through a pyrolysis process using raw materials from Low-density Polyethylene (LDPE) mixed with diesel fuel in volume ratios WPO10, WPO20, WPO30, WPO40, and WPO50. In addition, a performance test was carried out on the single-cylinder diesel engine test bench. The results showed that performing the diesel engine with the addition of WPO increased the average power and torque by 5% and 3%, thereby producing a higher heating value. Furthermore, the concentration of WPO also reduces the level of specific fuel consumption to be more efficient, with a decrease in thermal efficiency. In conclusion, plastic waste pyrolysis oil is a promising alternative fuel applicable to a diesel engine.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-12-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3692
10.31603/ae.3692
Automotive Experiences; Vol 4 No 1 (2021); 20-26
2615-6636
2615-6202
10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3692/2026
Copyright (c) 2020 Sunaryo Sunaryo, Priyo Adi Sesotyo, Eqwar Saputra, Agus Pulung Sasmito
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3801
2021-03-16T10:47:59Z
AutomotiveExperiences:ART
Study on Cooling System for Parked Cars using Mini Air Cooler and Exhaust Fan
Purnomo, Bagiyo Condro
Setiawan, Indra Chandra
Nugroho, Heru Adi
Deaths among children and pets, as well as damage to car interior components, have been widely reported as a result of parking under direct sunlight for a long time. Rising car cabin temperatures in this condition trigger the formation of benzene gas, but it is not possible to turn on the AC due to security and energy consumption. Therefore, this article reports the experimental study on cabin cooling system for parked car under direct sunlight by applying a mini air cooler and exhaust fan powered by a solar cell on small car Bajaj Qute RE60. Two thermocouples were installed inside and outside the cabin to monitor the temperature for 7 hours, expressing daytime heat conditions. The results showed that this cooling system could reduce the temperature to 10 K by removing 8982 kJ (0.356 kW) of heat. In conclusion, this prototype is very promising to be developed and if implemented on a larger scale will reduce car interior damage while parking under direct sunlight.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-07-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3801
10.31603/ae.v3i2.3801
Automotive Experiences; Vol 3 No 2 (2020); 81-88
2615-6636
2615-6202
10.31603/ae.v3i2
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3801/1892
Copyright (c) 2020 Bagiyo Condro Purnomo, Indra Chandra Setiawan, Heru Adi Nugroho
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3834
2021-03-16T10:47:55Z
AutomotiveExperiences:ART
Hilbert Transform Analyzer for Mechanical Fault Detection of Vehicle Alternators
Subekti, Subekti
Hidayat, Muhammad Nurul
Efendi, Basuki Dwi
Hamid, Abdul
Murwanto, Alim
Checking the alternator with mechanical measurements of moving parts takes sufficient time, especially in compact design engines. Therefore, this article presents a new method for alternator fault detection using the Hilbert transform application. The instantaneous amplitude and frequency are used as input variables for fault detection. Joint time-frequency analysis based on the wavelet analysis is also applied to identify the nonlinear characteristics. Various wavelet functions are examined, and some recommendations regarding the most suitable ones and the interpretation of the results are discussed. As a result, the backbone curve obtained from the instantaneous amplitude and frequency demonstrates the presence of the nonlinear phenomena, which can help make decisions about an alternator in normal conditions or indicate fault detection. From the test results, this method is very promising to be applied as part of vehicle's preventive maintenance.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-09-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3834
10.31603/ae.v3i3.3834
Automotive Experiences; Vol 3 No 3 (2020); 89-95
2615-6636
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10.31603/ae.v3i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3834/1923
Copyright (c) 2020 Subekti Subekti, Muhammad Nurul Hidayat, Basuki Dwi Efendi, Abdul Hamid, Alim Murwanto
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3881
2021-03-16T10:47:49Z
AutomotiveExperiences:ART
Numerical Study on the Effect of Mean Pressure and Loop's Radius to the Onset Temperature and Efficiency of Traveling Wave Termoacustic Engine
Rokhmawati, Endang Dian
Farikhah, Irna
Kaltsum, Ummi
Nuroso, Harto
Burhanudin, Aan
Setyoadi, Yuris
Amiruddin, Muhammad
Rahim, Irfan Abd
The thermoacoustic engine can be a device to convert waste heat energy in the engine car become useful energy such as for charging battery in car or Air conditioner of the car. This work can be done by experimentally and numerically. There are some parameters that have an impact on the performance of the engine. They are geometry of the engines, working fluid, and mean pressure. The performance of the engine depends on the efficiency and the heating temperature. In the car, waste heat energy is not high enough. Therefore, we need to utilize the low heating temperature to be converted into useful energy. This study contributes to numerically the effect of mean pressure and loop’s radius of the regenerator on the onset temperature and the efficiency of traveling wave thermoacoustic engines. The application that is used to solve numerical problems is fortran95. There are two codings that are used in fortran95. They are stability limits and efficiency codes. The lowest onset temperature that achieved is 153˚C with efficiency up to 38.1% that can be reached when the mean pressure is 4.0 MPa and the loop's radius is 5 cm. This result indicated that we can use low heating temperatures from waste heat of engine car to turn on electronics equipment inside the car.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-09-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3881
10.31603/ae.v3i3.3881
Automotive Experiences; Vol 3 No 3 (2020); 96-103
2615-6636
2615-6202
10.31603/ae.v3i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3881/1924
Copyright (c) 2020 Endang Dian Rokhmawati, Irna Farikhah, Ummi Kaltsum, Harto Nuroso, Aan Burhanudin, Yuris Setyoadi, Muhammad Amiruddin, Irfan Abd Rahim
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3882
2021-03-16T10:47:45Z
AutomotiveExperiences:ART
Evaluation of Operational Loading of the Light-Rail Transit (LRT) in Capital Region, Indonesia
Karmiadji, Djoko Wahyu
Gozali, Muchamad
Anwar, Anwar
Purnomo, Hedi
Setiyo, Muji
Junid, Ramli
In 2015, the Indonesian government issued regulations to accelerate the implementation of integrated Light-Rail Transit (LRT) in the capital region and its surroundings. In order to ensure its operational safety, experimental work is required to test components’ strength of the manufactured LRT structures. Following the JIS 7105 standard test method, the strain and deflection of the structures were measured by vertical load, compression, rotation, and three-point load support test. The critical area estimated in the railroad structure were conducted according to the finite element method, in which strain gauges are installed in areas where the stress concentration exceeds nominal pressure, namely notches, bends, and junction areas. The result shows that the maximum stress on the LRT train structure occurs at the door, where maximum compressive strain value is -1082 μe » -75.74 MPa on the left and the maximum tensile strain value is 597 μe » 41.79 MPa at the right door. The results of fatigue load analysis represent the average stress (σm) and voltage amplitude (σa) at the coordinate system located in the Søderberg triangle. Meanwhile, the camber value with the full vertical load still has a positive value of 3.03 mm, which indicates a safe limit.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-09-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3882
10.31603/ae.v3i3.3882
Automotive Experiences; Vol 3 No 3 (2020); 104-114
2615-6636
2615-6202
10.31603/ae.v3i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3882/1925
Copyright (c) 2020 Djoko Wahyu Karmiadji, Muchamad Gozali, Anwar Anwar, Hedi Purnomo, Muji Setiyo, Ramli Junid
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/3924
2021-03-16T10:47:37Z
AutomotiveExperiences:ART
Analysis of Deformation of Float Glass with Heat Treatment in Vehicle Windshield Applications
Julianto, Eko
Sunaryo, Sunaryo
Lopo, Elkana Bilak
The purpose of this study was to determine the shape change characteristics of float sheet glass using heat treatment experiments on its surface. This involved the use of a float glass type with a thickness of 5 mm, a width of 840 mm, and length of 1350 mm as the test specimen and the heat transfer experiments and treatment were conducted through conduction with the heat distribution recorded to be between 34 °C and 600 °C at every 5 minutes within 60 minutes in a heating furnace. The analysis focused on the characteristics of the glass surface exposed to fire with emphasis placed on the temperature during the deflection changes in the entire glass surface, the dimensional changes at the edges of the glass which follow the glass printing pattern, and the changes in temperature on the upper and lower surfaces of the curved glass mold. The results showed the existence of a very clear change in each temperature or conduction heat when the shape of the glass is changed to curve with the ideal shape observed to have changed at a temperature of 482.50 °C. Moreover, dimensional changes were 1.0427 m2 and the variations in the temperature were 107.55 °C and the continuous increase in the heat was to have led to a faster change in the glass shape by 11.2°. This, therefore, means a higher temperature or room temperature affects the firing rate of glass bending and also increases the rate of heat absorption.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-11-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3924
10.31603/ae.v3i3.3924
Automotive Experiences; Vol 3 No 3 (2020); 126-134
2615-6636
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10.31603/ae.v3i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/3924/1974
Copyright (c) 2020 Eko Julianto, Sunaryo Sunaryo, Elkana Bilak Lopo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4053
2021-03-16T10:47:41Z
AutomotiveExperiences:ART
Optimization of Tensile-Shear Strength in the Dissimilar Joint of Zn-Coated Steel and Low Carbon Steel
Sukarman, Sukarman
Abdulah, Amri
Jatira, Jatira
Rajab, Dede Ardi
Rohman, Rohman
Anwar, Choirul
Aminanda, Yulfian
Akbar, Muhammad Ali
The present study features analytical and experimental results of optimizing resistance spot welding performed using a pneumatic force system (PFS). The optimization was performed to join SECC-AF (JIS G 3313) galvanized steel material with SPCC-SD low carbon steel. The SECC-AF is an SPCC-SD (JIS G 3141) sheet plate coated with zinc (Zn) with a thickness of about 2.5 microns. The zinc coating on the metal surface causes its weldability to decrease. This study aims to obtain the highest tensile-shear strength test results from the combination of the specified resistance spot welding parameters. The research method used the Taguchi method using four variables and a combination of experimental levels. The experimental levels are 2-levels for the first parameter and 3-levels for other parameters. The Taguchi optimization experimental results achieved the highest tensile-shear strength at 5049.64 N. It properly worked at 22 squeeze time cycles, 25 kA of welding current, and 0.6-second welding time and 12 holding-time cycles. The S/N ratio analysis found that the welding current had the most significant effect, followed by welding time, squeeze time, and holding time. The delta S/N ratio values were 1.05, 0.67, 0.57 and 0.29, respectively.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-10-22
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4053
10.31603/ae.v3i3.4053
Automotive Experiences; Vol 3 No 3 (2020); 115-125
2615-6636
2615-6202
10.31603/ae.v3i3
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4053/1937
Copyright (c) 2020 Sukarman - Sukarman, Amri Abdulah, Jatira Jatira, Dede Ardi Rajab, Rohman Rohman, Choirul Anwar, Yulfian Aminanda, Muhammad Ali Akbar
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4137
2021-03-16T10:47:33Z
AutomotiveExperiences:ART
The Effects of Use of the Range Extender in a Small Commercial Electric Vehicle
Noga, Marcin
Gorczyca, Paweł
Hebda, Radosław
Research on the effects of the use of the range extender developed for a small commercial electric vehicle was presented in this paper. The range extender has a maximum output power of 2.65 kW. The developed auxiliary power unit consists of a three-phase generator propelled by an industrial low-power spark-ignition engine. The exhaust system was improved using a more efficient muffler. The implemented motorcycle muffler has a three-way catalyst (TWC) integrated inside. The use of the more advanced exhaust system aimed at reducing noise and exhaust emissions of the range extender. The efficient operation of the three-way catalytic converter requires a stoichiometric air-fuel ratio. To enable desired air-fuel ratio a fuel system was modified. In the first stage of research, the effects of improvements of the exhaust system on the range extender noise emissions were quantified. The next step covered the research of the fuel conversion efficiency, the exhaust gas composition, and the efficiency of conversion of the three-way catalyst. A significant decrease of noise and toxic gas emissions and an increase in the fuel conversion efficiency were revealed. The mentioned research was conducted in stationary conditions. After that, in the final part research of the running vehicle with the range extender on was made. The beneficial outcome of these tests enabled the development of a set of rules of the control of the range extender.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-12-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4137
10.31603/ae.4137
Automotive Experiences; Vol 4 No 1 (2021); 5-19
2615-6636
2615-6202
10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4137/2008
Copyright (c) 2020 Marcin Noga, Paweł Gorczyca, Radosław Hebda
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4199
2021-03-16T10:47:22Z
AutomotiveExperiences:ART
Effect of Magnetic Field Induce Arc in Autogenous TIG Welding of 304 Stainless Steel Butt Joint
Haikal, Haikal
Chamim, Moch.
Andriyansyah, Deni
Raharjo, Emanuel Budi
Baskoro, Ario Sunar
Isnarno, Isnarno
This paper reports the use of External Magnetic Field-Tungsten Inert Gas (EMF-TIG) method in butt joint applications to determine the effect of welding arc compression on the quality of butt joint of SS 304 thin plate was reported. The welding process was performed without using filler or autogenous welds. The external magnetic field was generated by placing a magnetic solenoid around the TIG welding torch. The results of this study showed that EMF-TIG welding can produce a more uniform bead width along the weld line compare with conventional TIG. Moreover, the D/W ratio obtained under external magnetic field was higher than without magnetic. However, the tensile strength of butt joint decreased with EMF-TIG because there is constriction in arc welding which produces shrinkage weld pool volume. In addition, high welding speeds result in a decrease in the tensile strength of both conventional TIG and EMF-TIG welds.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-02-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4199
10.31603/ae.4199
Automotive Experiences; Vol 4 No 1 (2021); 27-35
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2615-6202
10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4199/2116
Copyright (c) 2021 Haikal Haikal, Moch. Chamim, Deni Andriyansyah, Emanuel Budi Raharjo, Ario Sunar Baskoro, Isnarno Isnarno
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4252
2021-03-16T10:47:19Z
AutomotiveExperiences:ART
Bogie Frame Structure Evaluation for Light-Rail Transit (LRT) Train: A Static Testing
Karmiadji, Djoko Wahyu
Haryanto, Budi
Ivano, Ogi
Perkasa, Mustasyar
Farid, Abdul Rohman
A new bogie frame of Light-Rail Transit (LRT) is having its strength of structure verified with experimental static testing according to EN 13749 standards. Static testing of bogie frame structure of LRT is performed by using a combination of seven tensile and compression loads that comprise of operational loads (normal service) and over-loads (exceptional service). Measurement parameters of bogie frame are strain and deflection values. The strain and deflection values resulted at every step of the load test were measured and monitored to further be used as analytic data. This data is then compared to the stress data of finite element analysis to check its deviation value. Testing results show the maximum stress value is 81.48 MPa on operational load, meanwhile, for exceptional load case, maximum stress is 120.96 MPa and deflection value is 1.25 mm. The maximum stress value is still below yield strength of bogie frame material S 555J2 (y=355 MPa). According to testing data, structure of bogie frame LRT fulfill as the acceptance criteria.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-02-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4252
10.31603/ae.4252
Automotive Experiences; Vol 4 No 1 (2021); 36-43
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10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4252/2141
Copyright (c) 2021 Djoko Wahyu Karmiadji, Budi Haryanto, Ogi Ivano, Mustasyar Perkasa, Abdul Rohman Farid
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4383
2021-03-16T10:47:30Z
AutomotiveExperiences:Ed
Captain Seat: Smart Solution for Physical Distancing on Buses During the Covid-19 Pandemic
Setiyo, Muji
Waluyo, Budi
It has been a year after the announcement of Covid-19 outbreak in Wuhan. Activity restriction, implementation of health protocol, and lock-down are enforced to cut-off the spread of this virus. However, in the uncertainty towards a new normal, the mobility of people continues for various purposes. A rapid medical check-up at the airport or at railway stations is possible by the local authorities but it is impossible for public bus passengers due to the limitations of medical staff and a large number of bus stations. Most passengers also failed to comply with the government's recommendation to conduct a rapid test before using public buses. As anticipation, the Transportation Agency issued a regulation that all buses can only be filled with 50% (max) of their normal capacity by emptying 2 of the 4 seats in a row. As a consequence, a 32-seat bus can only be filled with 16 passengers (max) and the ticket price has doubled to cover operational costs. However, passenger interest in bus services has decreased due to high ticket prices. Therefore, this short article reports the smart actions of several bus companies in Indonesia to create a "Captain Seat", a 1-1-1 bus seat configuration to ensure physical distancing between passengers. With the captain seat model, buses with 32 seats are modified to 24 seats, the ideal distance between passengers during a pandemic can be maintained, the risk of loss to bus companies can be reduced, and passenger costs can be lowered.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2020-12-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4383
10.31603/ae.4383
Automotive Experiences; Vol 4 No 1 (2021); 1-4
2615-6636
2615-6202
10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4383/2012
Copyright (c) 2020 Muji Setiyo; Budi Waluyo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4569
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
Experimental Study on the Effect of Nano Additives γAl2O3 and Equivalence Ratio to Bunsen Flame Characteristic of Biodiesel from Nyamplung (Calophyllum Inophyllum)
Pambudi, Setyo
Ilminnafik, Nasrul
Junus, Salahuddin
Kustanto, Muh Nurkoyim
Nano γAl2O3 has been one of the nanometal oxides that has improved the characteristics of biodiesel. The effect of γAl2O3 nanoparticles addition on premixed flame combustion is investigated with an experiment on the laminar flame speed of Calophyllum inophyllum methyl ester 30% and 70% petrodiesel mixtures, at atmospheric pressure and preheated temperature T = 473K. The γAl2O3 nanoparticles added to CIME30 biodiesel were 0ppm, 100ppm, 200ppm, and 300ppm. Experiments were carried out on a bunsen burner. The equivalent ratio of the mixture between ϕ = 0.67 to 1.17. Experiments revealed that the addition of nanoparticles to CIME30 biodiesel expands the flammability limit and increases the laminar flame speed. CIME30 without nanoparticles, flame stable between ϕ = 0,76 -1,17. CIME30 with nanoparticles, flame stable between ϕ = 0,67 -1,17. Combustion of CIME30 required a lot of air. The highest laminar flame speed occurred at the equivalent ratio ϕ = 0.83. The highest laminar flame speed of CIME30 0, 100, 200, and 300 ppm were 30.77, 34.50, 35.90, 38.45 cm/s respectively. The higher the nano γAl2O3 concentration the higher the laminar flame speed. This occurs due to the catalytic effect of γAl2O3 on biodiesel and its mixtures.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4569
10.31603/ae.4569
Automotive Experiences; Vol 4 No 2 (2021); 51-61
2615-6636
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4569/2314
Copyright (c) 2021 Setyo Pambudi, Nasrul Ilminnafik, Salahuddin Junus, Muh Nurkoyim Kustanto
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4625
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
Comparative Study of Municipal Solid Waste Fuel and Refuse Derived Fuel in the Gasification Process Using Multi Stage Downdraft Gasifier
Mujiarto, Sigit
Sudarmanta, Bambang
Fansuri, Hamzah
Saleh, Arif Rahman
Municipal solid waste (MSW) is a type of general waste that includes households, traditional markets, commercial areas, and the rest from public facilities, schools, offices, roads, and so on. Refuse Derived Fuel (RDF) is obtained from the remnants of MSW which cannot be used anymore, which is flammable waste and is separated from parts that are difficult to burn through the process of chopping, sifting, and air classification. RDF has potential as an alternative energy source. In this study, RDF fuel was compared with MSW fuel both by proximate and calorific value, then the gasification process was carried out using a multi-stage downdraft gasifier to see gasification performance indicators such as syngas composition, LHV, cold gas efficiency, and tar concentration. The results showed that the gasification performance indicator for MSW biomass resulted in the syngas composition of CO = 19.08% v, H2 = 10.89% v, and CH4 = 1.54% v. The calorific value (Low Heating Value, LHV ) of syngas is 4,137 kJ/kg, cold gas efficiency is 70.14%, and tar content is 57.29 mg/Nm3. Meanwhile, RDF obtained the composition of CO gas: 18.68% v, H2: 9.5446% v, and CH4: 0% v. The maximum LHV syngas is 3365.08 kJ/kg, cold gas efficiency is 57.19 % and the smallest tar content is 80.24 mg/Nm3. When compared to RDF, MSW produces a better gasification performance indicator. However, RDF can still be used as an alternative energy source using the gasification process. The results of this study can be used to optimize the further RDF gasification process.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-04-11
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4625
10.31603/ae.4625
Automotive Experiences; Vol 4 No 2 (2021); 97-103
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4625/2318
Copyright (c) 2021 Sigit Mujiarto, Bambang Sudarmanta, Hamzah Fansuri, Arif Rahman Saleh
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4641
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
Effect Methanol, Ethanol, Butanol on the Emissions Characteristics of Gasoline Engine
Syarifudin, Syarifudin
Sanjaya, Firman Lukman
Fatkhurrozak, Faqih
Usman, M. Khumaidi
Sibagariang, Yohanes
Köten, Hasan
The increasing volume of motorized vehicles leads to an increase in dependence on fossil fuels and an increase in air pollution. The problem can be reduced by utilizing renewable alcohol fuels such as methanol, ethanol, and butanol. The high number of octane and oxygen content is the main reason. Therefore, this study aims to observe the exhaust emissions of the 160 cc gasoline engine with a mixture of methanol, ethanol, and butanol. The percentage of alcohol used is 0 % to 30 % by volume. The test was carried out in 2000, 3000, and 4000 rpm. The results of the study explained that the use of methanol, ethanol, butanol in the fuel mixture was proven to reduce exhaust emissions. CO and HC emissions decreased as the percentage of alcohol in the fuel increased. The highest reduction in CO and HC emission in methanol blended fuel was 30 %, 94.55 % and 82.71 %, respectively. Meanwhile, CO2 emissions increased by 34.88 % at 2000 rpm engine speed. Based on this test, the addition of methanol to fuel can reduce exhaust emissions better than ethanol and butanol.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4641
10.31603/ae.4641
Automotive Experiences; Vol 4 No 2 (2021); 62-67
2615-6636
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4641/2315
Copyright (c) 2021 Syarifudin Syarifudin, Firman Lukman Sanjaya, Faqih Fatkhurrozak, M. Khumaidi Usman, Yohanes Sibagariang, Hasan Köten
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4664
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
Synthesis and Characterization of Diesel Lubricity Enhancer through Transesterification Reaction of Palm Oil with 1,2-Ethanediol
Zetra, Yulfi
Sholihah, Sovia Masfuri Walidatus
Burhan, R. Y. Perry
Firmansyah, R. Arizal
Desulphurization of diesel fuel is necessary to be done to reduce sulphur content in the air. However, the desulphurization process will reduce the lubrication properties of diesel fuel. In order to overcome the problem, it needs bioadditive to improve the lubricity. Lubricity of diesel fuel can be improved by the subsistence of chemical compound that is hydroxyethyl esther (HEE). HEE is synthesized through the transesterification reaction of palm oil (triglycerides) and 1,2 ethanediol at 150 °C for 5 hours and K2CO3 catalyst as well. The conversion of TG into the products is 72.90%. The characterization using Gas Chromatography-Mass Spectrometry (GC-MS) indicates that the chemical compound in synthesis products comprise free fatty acids, hydroxyethyl esters and by-products. The obtained products can be used as bioadditives to improve the lubricity of diesel fuel.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-05-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4664
10.31603/ae.4664
Automotive Experiences; Vol 4 No 2 (2021); 104-111
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4664/2363
Copyright (c) 2021 Yulfi Zetra, Sovia Masfuri Walidatus Sholihah, R. Y. Perry Burhan, R. Arizal Firmansyah
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4682
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
The Simulation of Performance and Emissions from Rapeseed and Soybean Methyl Ester in Different Injection Pressures
Bhikuning, Annisa
Biodiesel is one of the promising alternative fuels of the future that is environmentally friendly. Biodiesel can be produced from rapeseed, soybeans, coconut oil, jatropha and many others. It is important to analyze the effect of comparison between diesel fuel and biodiesel to study the effect of combustion and emissions of these fuels. In this research, the simulation of combustion and emission is done with Diesel RK. Three fuels are studied; diesel fuel, rapeseed methyl ester (RME) and soybean methyl ester (SME). The engine was simulated at 2000 rpm and the injection pressures were 944, 1191, 1297, 1420 and 1729 bar respectively. The results show that the specific fuel consumption (SFC), particulate matter (PM), and CO2 emissions of diesel fuel are relatively the same for different injection pressures. However, the SFC, PM and CO2 emissions for rapeseed methyl ester and soybean methyl ester decrease with increasing injection pressure. These results can prove that higher injection pressures in diesel engines can improve combustion and reduce emissions of biodiesel fuel as compared to diesel fuel.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-08-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4682
10.31603/ae.4682
Automotive Experiences; Vol 4 No 3 (2021); 112-118
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4682/2620
Copyright (c) 2021 Annisa Bhikuning
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4694
2021-03-16T10:47:16Z
AutomotiveExperiences:ART
Synthesis of Bio-additive for Low Sulphur Diesel: Transesterification of Soybean Oil and Ethylene Glycol using K2CO3 Catalyst
Hariyanto, Rhiby Ainur Basit
Firmansyah, R. Arizal
Burhan, R. Y. Perry
Zetra, Yulfi
The desulphurization process of diesel fuel is carried out to reduce the amount of SO2 emissions that can cause acid rain. However, the desulphurization process in diesel fuel not only removes the sulfur compounds but polyaromatic and polar compounds are also eliminated during this process. The loss of these two compounds can reduce the lubricity properties of diesel fuel. Therefore, it is necessary to add an additive compound that can increase the lubricity properties. In this research, 2-hydroxyethyl ester (HEE) was synthesized as an additive to increase the lubricity of diesel fuel. This compound was synthesized through the transesterification reaction of soybean oil and ethylene glycol with K2CO3 as the base catalyst. The composition of the synthesized additives was analyzed using the Gas Chromatography-Mass Spectrometry (GC-MS). Based on the results of GC-MS spectrum analysis, it is known that the 2-hydroxyethyl ester compound has been formed with a yield of 66.5% (relative to the area of the chromatogram peak). The HEE compound obtained is a mixture of 2 hydroxyethyl palmitate, 2 hydroxyethyl linoleate, 2 hydroxyethyl stearate, 2 hydroxyethyl arachidonate, 2 hydroxyethyl nervate, and 2 hydroxyethyl behenate.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-03-13
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4694
10.31603/ae.4694
Automotive Experiences; Vol 4 No 1 (2021); 44-50
2615-6636
2615-6202
10.31603/ae.v4i1
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4694/2155
Copyright (c) 2021 Rhiby Ainur Basit Hariyanto, R. Arizal Firmansyah, R. Y. Perry Burhan, Yulfi Zetra
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4812
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
Static and Dynamic Performance of Vector Control on Induction Motor with PID Controller: An Investigation on LabVIEW
Muntashir, Abdillah Aziz
Purwanto, Era
Sumantri, Bambang
FAkhruddin, Hanif Hasyier
Apriyanto, Raden Akbar Nur
A three-phase induction motor is often used in everyday life because of its high reliability. However, it is associated with some disadvantages, including difficulties in maintaining constant speed during load changes and speed regulation due to the decoupled system. Therefore, this study aims to adjust the three-phase induction motor control to become a separate amplifier DC motor by setting the vector control using the IFOC method, which changes the coupled to the decoupled system. The speed settings are equipped with a PID controller where its parameters, which are obtained using Ziegler Nichols, produce speed output with fast research time and small steady-state errors. This research was conducted to observe and analyze the performance of a controller based on the IFOC approach with a PID controller at speed differences, with static and dynamic conditions in the entire speed working area. In the first stage of the research, simulation is carried out with static conditions, namely changes in speed variations throughout the work area (low speed to high speed), the next stage is a simulation with dynamic conditions, which is to provide changes in the value of the load torque when the system is operating. The simulation result carried out with LabVIEW shows a response time of 1.13 ms, a settling time of 9.9 ms, and a steady error of 0.4% at the 500 Rpm set point. It also indicated dynamic characteristics with a recovery time of 4.9 ms at the 300 Rpm set point. When operated at low speed, IFOC with PID controller has a stable response. But In dynamic conditions, the use of a PID controller is considered unsuitable. This is because the PID controller is less fast and less robust in responding to the system when conditions change in the value of the load torque.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4812
10.31603/ae.4812
Automotive Experiences; Vol 4 No 2 (2021); 83-96
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4812/2317
Copyright (c) 2021 Abdillah Aziz Muntashir, Era Purwanto, Bambang Sumantri, Hanif Hasyier FAkhruddin, Raden Akbar Nur Apriyanto
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4815
2021-08-14T13:09:51Z
AutomotiveExperiences:ART
The Effects of Rice Husk Particles Size as A Reinforcement Component on Resin-Based Brake Pad Performance: From Literature Review on the Use of Agricultural Waste as A Reinforcement Material, Chemical Polymerization Reaction of Epoxy Resin, to Experiments
Nandiyanto, Asep Bayu Dani
Hofifah, Siti Nur
Girsang, Gabriela Chelvina Santiuly
Putri, Silmi Ridwan
Budiman, Bentang Arief
Triawan, Farid
Al-Obaidi, Abdulkareem Sh. Mahdi
This study aims to investigate the effect of rice husks’ particle size on resin-based brake pad performance (i.e. compressive strength, puncture strength, mass loss, wear rate, friction coefficient, and heat resistance). Bisphenol A-epichlorohydrin and cycloaliphatic amine were mixed to form resin and used as the brake pad's base material. In the experiment, rice husk with a specific particle size (i.e., 250, 500, dan 1000 μm) was added to the resin. Rice husk has received considerable interest due to its lignin, cellulose, and silica content, making it suitable as friction material due to its ceramic-like behavior. The experimental results showed small rice husk particles improved compressive strength, puncture strength, and bulk density. This can be obtained from the analysis of the maximum compressive strength for brake pad supported by particles with sizes of 250, 500, and 1000 μm having values of 0.238; 0.173; and 0.144 MPa, respectively. In contrast, large particles formed coarse surfaces and pores, decreased mass loss rate, and improve friction properties (i.e. wear rate, friction coefficient). The friction coefficient values of brake pad supported by particles with sizes of 250, 500, and 1000 µm were, respectively, 0.2075; 0.2070; and 0.3379. Particle size affected interpacking, interfacial bonding, pores number and size, thermal softening, mechanical properties, and friction properties of the brake pad. Comparison between the prepared resin-based and commercial brake pad was also done, confirming the utilization of agro-waste as a potential alternative for friction material in the brake pad.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-05-24
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4815
10.31603/ae.4815
Automotive Experiences; Vol 4 No 2 (2021); 68-82
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4815/2316
Copyright (c) 2021 Asep Bayu Dani Nandiyanto, Siti Nur Hofifah, Gabriela Chelvina Santiuly Girsang, Silmi Ridwan Putri, Bentang Arief Budiman, Farid Triawan, Abdulkareem Sh. Mahdi Al-Obaidi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/4954
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
The Response of Adding Nanocarbon to the Combustion Characteristic of Crude Coconut Oil (CCO) Droplets
Marlina, Ena
Basjir, Mochammad
Purwati, Rully Dyah
One of the strong candidates for biodiesel is Crude Coconut Oil (CCO) but its high viscosity cannot be applied directly without treatment. Therefore, nanocarbon is added to reduce the viscosity of CCO. Nanocarbon is a natural material with semiconductor properties, a good heat conductor, and can attract other molecules. By adding nanocarbon, it is expected to reduce the viscosity of CCO. This study aimed to determine the combustion characteristics of droplets on CCO by adding nanocarbon by 1% and 5%. The method used was a true experiment with droplets, which dripped on the thermocouple with activation energy from the heater. The results showed that CCO burned 0.933s with a droplet diameter of 4.307mm, droplet diameter of 5.472 mm. By adding 5% nanocarbon to CCO, the CCO burned faster, more reactive, and the ignition was shorter than the pure CCO and 1% CCO.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-12-26
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4954
10.31603/ae.4954
Automotive Experiences; Vol 5 No 1 (2022); 68-74
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/4954/2909
Copyright (c) 2021 Ena Marlina, Mochammad Basjir, Rully Dyah Purwati
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5049
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
Influence Temperature and Holding Time of Empty Fruit Bunch Slow Pyrolysis to Phenolic in Biocrude Oil
Irawan, Anton
Kurniawan, Teguh
Alwan, Hafid
Darisman, Darisman
Pujianti, Dina
Bindar, Yazid
Bakar, Muhammad Saifullah Abu
Nandiyanto, Asep Bayu Dani
Indonesia has an abundance of biomass from agricultural, plantation, and domestic waste products. Biomass can be converted into fuels and chemicals that are environmentally friendly. Empty fruit bunches (EFB) are biomass from abundant palm oil processing. Pyrolysis was a thermal process with free oxygen at temperatures between 400-600°C. Generally, pyrolysis was carried out under fast pyrolysis to produce a product that leads to bio-crude oil. One of the main components of bio-crude oil was phenol, which had been produced from further processing of crude oil. With the limitations of crude oil, the production of phenol from biomass pyrolysis was an option for the future, especially for fuels and fuel additives. Thus, it is necessary to investigate the effect of heating rate, temperature pyrolysis, and holding time on pyrolysis products including phenols in bio-crude oil. Slow pyrolysis of EFB was performed at various parameters, including temperatures (400, 450, and 500°C) and holding time (5, 10, and 15 min). Slow pyrolysis of oil palm EFB with variations in temperature and holding time has been carried out by producing liquid between (40 - 42 %weight), gas (19 – 21 % weight), and solid products (38 – 39 % weight). Biocrude oil liquid product showed the highest yield compared to biochar and bio pyrolysis gas. Temperature plays an important role in controlling the production of bio-crude oil as a liquid product, including a component in bio-crude oil. Phenol recovery was more affected by temperature instead of holding time.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-09-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5049
10.31603/ae.5049
Automotive Experiences; Vol 4 No 3 (2021); 150-160
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5049/2640
Copyright (c) 2021 Anton Irawan, Teguh Kurniawan, Hafid Alwan, Darisman Darisman, Dina Pujianti, Yazid Bindar, Muhammad Saifullah Abu Bakar, Asep Bayu Dani Nandiyanto
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5118
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Engine Performances of Lean Iso-Octane Mixtures in a Glow Plug Heated Sub-Chamber SI Engine
Anggono, Willyanto
Stanley, Soen Peter
Ronaldo, Ferdinand
Gotama, Gabriel J.
Guo, Bin
Yilmaz, Emir
Ichiyanagi, Mitsuhisa
Suzuki, Takashi
Due to the difficulty to directly study ammonia, the present work investigated the engine performance of lean iso-octane/air mixture to approximate ammonia combustion behaviour. The study was conducted using a single cylinder modified diesel engine that features a spark plug and glow plug in the sub-chamber. The investigations varied the engine speeds (1000 and 1500 RPM), glow plug voltages (6 and 10 volts), excess air ratios (1.4 to 1.8), and ignition timings (-2 to -5 °BTDC). The results suggested improved engine performances with a lower excess ratio and higher glow plug voltage due to more complete and stable combustion. By increasing the engine speed, the lean burn limit was extended and improved the engine performances. Because of the sub-chamber feature, delaying the ignition timing improved the engine performances. A larger excess air ratio was found to increase the sensitivity of the engine performances with the ignition timing. The brake mean effective pressure for all conditions has a coefficient of variation of less than 7%, indicating stable combustion. The results suggested that the current setup can be used to investigate ammonia blended fuel and direct ammonia combustion in future works.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5118
10.31603/ae.5118
Automotive Experiences; Vol 5 No 1 (2022); 16-27
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5118/2842
Copyright (c) 2021 Willyanto Anggono, Soen Peter Stanley, Ferdinand Ronaldo, Gabriel J. Gotama, Bin Guo, Emir Yilmaz, Mitsuhisa Ichiyanagi, Takashi Suzuki
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5217
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
Resin-based Brake Pad from Rice Husk Particles: From Literature Review of Brake Pad from Agricultural Waste to the Techno-Economic Analysis
Nandiyanto, Asep Bayu Dani
Husaeni, Dwi Fitria Al
Ragadhita, Risti
Kurniawan, Tedi
A brake pad is the most crucial component in motorized vehicles. Many ways have been done and reported on how to prepare resin-based brake pads, but information relating to the economic analysis of resin-based brake pads on a large-scale production is still rare. This study aimed to report a literature review of brake pad production from biomass and agricultural wastes, optimal design of brake pad, and techno-economic analysis of resin-based brake pad production from rice husk. In the techno-economic analysis, we focused on engineering and economic perspectives. Engineering analysis was conducted by calculating the mass balance in the resin-brake pad production process. To support the analysis, economic parameters including gross profit margin (GPM), payback period (PBP), break-even point (BEP), cumulative net present value (CNPV), profitability index (PI), internal rate return (IRR), and return on investment (ROI) were calculated to predict the feasibility of project under ideal condition. We also calculated the techno-economic analysis for the worst cases in the project, calculating the internal problems (i.e., raw materials, sales, utility, labor, employee, fixed cost, variable cost, and production capacity) and the external issues (i.e., taxes and subsidiaries). Based on the engineering evaluation, the resin-based brake pad project is prospective. From economic evaluation, GPM, PBP, BEP, CNPV, PI, and ROI showed positive results, indicating that the project is potential for the large-scale production. This work has demonstrated the importance of the projects for further development and can be used as a reference for further production of brake pads made from agricultural waste.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-08-16
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5217
10.31603/ae.5217
Automotive Experiences; Vol 4 No 3 (2021); 131-149
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5217/2639
Copyright (c) 2021 Asep Bayu Dani Nandiyanto, Dwi Fitria Al Hussaeni, Risti Ragadhita, Tedi Kurniawan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5298
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
Aerodynamics of Bus Platooning under Crosswind
Yudianto, Aan
Adiyasa, I Wayan
Yudantoko, Afri
The aerodynamic benefits of a vehicle in a platoon could be distracted by an imposed crosswind on it. The study aims to investigate the alteration of aerodynamic coefficient comprising drag force coefficient, lift force coefficient, side force coefficient, and pressure coefficient of buses traveling in a platoon by considering crosswind. A Computational Fluid Dynamic (CFD) simulation was carried out on a detailed bus model. Proposed meshing techniques were also offered. The investigation considered the yaw angle from 0° to 30° and inter-bus distances by proposed coefficient X/L from 0.05 to 1.25. The results in the changes in the aerodynamic performance of both buses were presented. The advantages of platoon configuration were described in more detail when no crosswind was considered in terms of the generated turbulence kinetic energy of the leading and following bus. The results indicated that a crosswind deteriorates aerodynamic benefits during the platoon. The inter-bus distance determines how the airflow around the bus behaves, leading to the variation in aerodynamic advantages experienced by buses. Comparison between the numerical study and experiment indicated a satisfactory correlation of results validation.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-08-15
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5298
10.31603/ae.5298
Automotive Experiences; Vol 4 No 3 (2021); 119-130
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5298/2621
Copyright (c) 2021 Aan Yudianto, I Wayan Adiyasa, Afri Yudantoko
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5472
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Design and Experiment of a Prototype Electronic Control Unit Direct Injection Fuel System Arduino-Based for 2-stroke Spark Ignition Engine
Syaka, Darwin Rio Budi
Purwoko, Ade Tiya
Sopiyan, Sopiyan
The development of technology on the 2-stroke direct-injection spark-ignition engine is expected to be a solution to optimize engine performance and reduce exhaust pollution. The fuel injection system in the operation of the spark-ignition engine is controlled by the Electronic Control Unit (ECU), so this study aims to design and experiment with a prototype of an Arduino-based direct injection fuel injection electronic control unit for 2-stroke spark-ignition engines. This research method begins with the design of an electronic control unit prototype that is selected for easy setup and low cost. Then, experiments were conducted on variations in injection timing and injection duration, which are the two main parameters of the fuel system to determine their effect on engine performance. This data is then used as a basis for setting the amount of fuel injected. The results show that there is an optimal performance under certain conditions from setting the injection timing and injection duration which is easily applied to the open-source code setting of this electronic control unit.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-28
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5472
10.31603/ae.5472
Automotive Experiences; Vol 5 No 1 (2022); 49-56
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5472/2845
Copyright (c) 2021 Darwin Rio Budi Syaka, Ade Tiya Purwoko, Sopiyan Sopiyan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5496
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
Distribution of a Taxi Fleet: The Problem of Arranging Repair and Maintenance in the Absence of Centralized Management
Cozac, Eugeniu
Gordienko, Mikhail
Bogdanov, Mikhail
Sakulyeva, Tatyana
Aksenov, Ilia
The article presents a mathematical model for distributed taxi fleet operations. A technological approach based on mathematical models of transport systems using the Hungarian algorithm was used to model the arrangement of repair and maintenance in the absence of centralized management. The literature review on taxi fleet robotics has shown that central management is the cause of increasing transport service costs up to 30%. The results of approximating the cases of repairing and maintaining the taxi fleet in the absence of centralization to the lognormal and Gaussian distributions are provided based on 2019-2020 data. A blockchain scheme for work organization and maintenance of the taxi fleet within the decentralization framework is developed. The statistical analysis of repair and emergency maintenance cases in the distributed taxi fleets calculated per 1000 cars was 3.6 to 15%. Pearson's criterion c2 was from 0.001 to 0.17. Statistical significance values of the results were p≤0.005. A multivariate cluster analysis of the accident or technical failure occurrence among the distributed taxi fleet vehicles was conducted in months, taking statistical data for the last two years. An algorithm that allows performing optimal assignments for a distributed taxi fleet is developed in this work. A sample calculation of the optimal allocation for taxi fleet vehicles distributed in the state of minimum vehicle repair cost based on the Hungarian algorithm was provided. The application of this algorithm also makes it possible to determine the optimal destinations for vehicles in the taxi fleet.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5496
10.31603/ae.5496
Automotive Experiences; Vol 4 No 3 (2021); 171-183
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5496/2838
Copyright (c) 2021 Eugeniu Cozac, Mikhail Gordienko, Mikhail Bogdanov, Tatyana Sakulyeva, Ilia Aksenov
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5634
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
A Review on the Disposal Methods with Intrinsic Environmental and Economic Impacts of Scrap Tyres in Nigeria
Elehinafe, Francis Boluwaji
Hassan, Yebtemiya Judith
Ebong-Bassey, Queen Eddidong
Adesanmi, Adewole Johnson
The rapid increase in the amount of tyres discarded yearly leads to the problem of scrap tyres littering the country, Nigeria thereby leading to environmental pollution. This paper looks at the extent of the menace scrap tyres has caused, the methods of their disposal and the effects on the environment. The study calls for a concerted effort from researchers, industry operators and regulatory bodies to be up and doing in the disposal of scrap tyres in Nigeria to check the degradation of the environment in its three compartments: air, water and land, with a view to upholding environmental sustainability and embedded economic advantages.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-02-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5634
10.31603/ae.5634
Automotive Experiences; Vol 5 No 2 (2022); 103-110
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5634/3115
Copyright (c) 2022 Francis Boluwaji Elehinafe, Yebtemiya Judith Hassan, Queen Eddidong Ebong-Bassey, Adewole Johnson Adesanmi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5986
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
The Effects of Sodium Hydroxide (NaOH) Concentration and Reaction Temperature on The Properties of Biodiesel from Philippine Tung (Reutealis Trisperma) Seeds
Supriyadi, Slamet
Purwanto, Purwanto
Anggoro, Didi Dwi
Hermawan, Hermawan
Philippine Tung (Reutealis trisperma) is an indigenous nut that is a relatively new feedstock for producing biodiesel in Indonesia. The nature of NaOH base catalyst and reaction temperature plays an important role in the method of biodiesel production. This study aimed to assess the effects of different percentages of NaOH base catalyst and reaction temperature on physicochemical properties of Philippine Tung biodiesel. Transesterification process was carried out by reacting Philippine Tung oil with methanol and NaOH catalyst. NaOH weight to oil weight was at 0.25%, 0.5%,0.75% and 1%, the reaction temperature set up were at 60°C and 70°C, while methanol-oil molar ratio was set at 6:1. Yield, acid value, saponification value, density, and viscosity of biodiesel were significantly influenced by NaOH catalyst concentrations. Meanwhile reaction temperature had no effect on the yield and viscosity. Philippine Tung biodiesel produced using 0.25% NaOH catalyst met the SNI 04-7182-2015 biodiesel standard of the properties investigated in this study (yield: 96.18%, acid value: 0.466 mg KOH/g, saponification value: 200.083 mg KOH/g, density: 0.889 g/mL, viscosity: 5.276 cSt).
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-12-04
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5986
10.31603/ae.5986
Automotive Experiences; Vol 5 No 1 (2022); 57-67
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5986/2846
Copyright (c) 2021 Slamet Supriyadi, Purwanto Purwanto, Didi Dwi Anggoro, Hermawan Hermawan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/5994
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Propane (HC – 290) as an Alternative Refrigerant in the Food Transport Refrigeration Sector in Southern Africa – a Review
Kivevele, Thomas
Most of the food transport trucks in Sothern Africa are equipped with refrigeration and air conditioning systems filled with fluorocarbon refrigerants such as R404A to facilitate the heat transfer process. These refrigerants are synthetic chemicals and have high potential to cause global warming and damage to the ozone layer. Currently, natural refrigerants are considered as alternatives to these man-made refrigerants to mitigate some of the environmental risks. The natural refrigerants are the substances that occur in nature such as hydrocarbons (HC), ammonia, and carbon dioxide. These type of refrigerants have been in the market for many years, but in some applications such as domestic refrigerators, heat pumps, chillers, and air conditioners, whereas fluorocarbons are the mostly used in the food transport refrigeration systems. Natural refrigerants such as propane (HC – 290) are now penetrating the market in food transport refrigeration systems where previously fluorocarbons were the favoured option. Therefore, this work reports the possibilities of using non-fluorinated hydrocarbon/natural refrigerant (propane – R290) in the food transport refrigerated systems in Southern Africa; a case study of South Africa. R290 has the potential to lower greenhouse gases emissions compared to hydrofluorocarbons (HFCs) which are widely used in most of the existing food transport refrigeration systems in South Africa. R290 has negligible Global Warming Potential (GWP) of 3 which is well below the global threshold value of 150. The review revealed that refrigeration capacity of R290 is in the average of 10 – 30% higher than commonly used fluorocarbon refrigerants such as R404A and R134A. Since R290 is labeled as a flammable refrigerant, the present study also reviews its flammability safety measures.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-01-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5994
10.31603/ae.5994
Automotive Experiences; Vol 5 No 1 (2022); 75-89
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/5994/3003
Copyright (c) 2022 Thomas Kivevele
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6040
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Natural Fiber Composites from Coconut Fiber, Wood Powder, and Shellfish Shell of Centrifugal Clutch Materials
Kholil, Ahmad
Riyadi, Riyadi
Dwiyati, Siska Titik
Syaefuddin, Eko Arif
Pratama, Randika Hadi
Putra, Yuda Dwi Rama
Natural fiber materials are the sustainable sources used for future automotive elements, where the centrifugal clutch utilizes the frictional force on the clutch pads to transfer kinetic energy from the rotating crankshaft to the transmission and the wheels. These pads are produced from several natural composites, such as coconut fiber, as well as wood and shellfish powder, whose characteristics are being investigated for hardness, microstructure, and wear properties. Based on this study, performance analysis was carried out on the samples of composite centrifugal clutch applied to automatic motorcycles. As a comparison, subsequent analysis was conducted on the genuine clutch pad materials, where the results showed differences in the characteristics of each mixture composition of the natural fiber composites. This indicated that the addition of wood powder composition to the clutch pad increased the hardness and special wear values by an average of approximately 12.9 and 1.16%, respectively. Furthermore, the composite content was observed in the microstructure, as the maximum power and torque on the natural fiber materials were 10.7 hp and 17.17 N.m, respectively. The value was found to be closely similar to the genuine parts with maximum power and torque of 10.8 hp and 16.02 N.m, respectively.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-03-04
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6040
10.31603/ae.6040
Automotive Experiences; Vol 5 No 2 (2022); 111-120
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6040/3129
Copyright (c) 2022 Ahmad Kholil, Riyadi Riyadi, Siska Titik Dwiyati, Eko Arif Syaefuddin, Randika Hadi Pratama, Yuda Dwi Rama Putra
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6111
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Experimental Investigation of Cooling Performance in Automotive Radiator using Al2O3-TiO2-SiO2 Nanofluids
Ramadhan, Anwar Ilmar
Azmi, Wan Hamzah
Mamat, Rizalman
Diniardi, Ery
Hendrawati, Tri Yuni
The use of nanoparticle coolant fluid in the car radiator increases the rate of heat transfer and facilitates the reduction of the overall radiator size. In this study, heat transfer characteristics of tri-hybrid nanofluids-based water/EG (60:40) were analyzed experimental and compared with water/EG (60:40). Four different nanofluids concentrations were prepared by adding 0.05 to 0.3 vol.% of tri-hybrid nanofluids dispersed a mixture of water/ethylene glycol (60:40). Experiments were carried out by varying the flow rate of coolant between 2 to 12 LPM for working temperature of 70 °C, the velocity of airflow remained at an average of 4 m/s, to understand the effect of coolant flow rate on heat transfer. The results showed that the thermal performance of tri-hybrid nanofluids in a water/EG (60:40) mixture has been investigated for volume concentrations of up to 0.3% and working temperature of 70 °C. The maximum enhancement of heat transfer coefficient for air side is observed up to 23.8% at 0.05% volume concentration meanwhile for coolant side is observed at 39.7% at 0.3% volume concentration. The pressure drop and pumping power have the same pattern which increasing in volume concentrations.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6111
10.31603/ae.6111
Automotive Experiences; Vol 5 No 1 (2022); 28-39
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6111/2843
Copyright (c) 2021 Anwar Ilmar Ramadhan, Wan Hamzah Azmi, Rizalman Mamat, Tri Yuni Hendrawati
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6116
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Performance and Emissions Analysis of BE85-Gasoline Blends on Spark Ignition Engine
Nanlohy, Hendry Y.
Riupassa, Helen
Mini, Marthina
Taba, Herman Tjolleng
Katjo, Basri
Nanulaitta, Nevada JM
Yamaguchi, Masaki
This study aims to reveal the performance and exhaust emissions of a spark ignition (SI) engine fueled by a gasoline-bioethanol mixture. The main performance characteristics of the SI engine tested are torque, power output; thermal efficiency, brake specific fuel consumption, and brake mean effective pressure. Meanwhile, the exhaust emissions seen are carbon monoxide and hydrocarbons. The test is carried out by comparing the performance of the SI engine under standard conditions without modification with gasoline fuel, with the SI engine with modification with 85% bioethanol fuel. The mass flow of fuel is regulated by modifying the carburetor choke at 3/4 and 7/8. The results show that although slightly lower than gasoline, in general, it can be seen that bioethanol can improve SI engine performance and produce environmentally friendly exhaust emissions.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-27
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6116
10.31603/ae.6116
Automotive Experiences; Vol 5 No 1 (2022); 40-48
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6116/2844
Copyright (c) 2021 Hendry Y. Nanlohy, Helen Riupassa, Marthina Mini, Herman Tjolleng Taba, Basri Katjo, Nevada JM Nanulaitta, Masaki Yamaguchi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6132
2021-11-25T21:05:58Z
AutomotiveExperiences:ART
Combustion Analysis of Ammonia/Oxygen Mixtures at Various Equivalence Ratio Conditions Using a Constant Volume Combustor with Sub-chamber
Guo, Bin
Ichiyanagi, Mitsuhisa
Horie, Makoto
Aihara, Keita
Ohashi, Takuma
Zhang, Abiyasu
Suzuki, Takashi
The greenhouse effect issue is becoming more serious, and renewable energy is playing an increasingly important role. Among all alternative fuels, ammonia has been attracting attention as a carbon-free energy carrier for hydrogen, because of its large energy density per volume and easy storage and transportation. On the other hand, ammonia has a low combustion speed, which is an important issue for the use of ammonia as a vehicle fuel. To increase the mean flame speed of ammonia, the present study used the burned gas ejected from the sub-chamber for the compression of the mixture in the main chamber and the promotion of its HCCI combustion. Thus, the constant volume combustor with sub-chamber was used to realize the above combustion and to study the combustion characteristics of ammonia and oxygen mixture. In the experiments, initial pressure and initial temperature were unchanged and only the equivalence ratio was changed. The combustion pressure data were recorded and analyzed. As the result, the maximum combustion pressure (2.5 MPa) was obtained when the equivalence ratio was 0.4. The combustion speed was the fastest when the equivalence ratio was 0.6, and the mean flame speed was about 57.5 m/s.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-05
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6132
10.31603/ae.6132
Automotive Experiences; Vol 4 No 3 (2021); 161-170
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6132/2835
Copyright (c) 2021 Bin Guo, Mitsuhisa Ichiyanagi, Makoto Horie, Keita Aihara, Takuma Ohashi, Abiyasu Zhang, Takashi Suzuki
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6136
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Rollover Stability Analysis and Layout Optimization of a Delta E-trike
Endrasari, Fitri
Djamari, Djati Wibowo
Budiman, Bentang Arief
Triawan, Farid
This study derives a rollover index for a delta E-trike. Past works derive the rollover index by considering lateral centrifugal force only. In contrast, this study proposes a rollover index which is derived under the assumption that the centrifugal force act in both lateral and longitudinal direction. This assumption will give a result closer to the real-life application. In addition, a parametric study on the effect of center of gravity location on rollover index is also proposed. The study continued with the layout assessment, which is done as the considerations in rearranging the powertrain components inside the E-trike. The comparison between initial and new layout shows that the new arrangement gives several advantages to the delta E-trike.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-03-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6136
10.31603/ae.6136
Automotive Experiences; Vol 5 No 2 (2022); 137-149
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6136/3133
Copyright (c) 2022 Fitri Endrasari, Djati Wibowo Djamari, Bentang Arief Budiman, Farid Triawan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6171
2022-02-07T22:28:45Z
AutomotiveExperiences:ART
Elemental, Thermal and Physicochemical Investigation of Novel Biodiesel from Wodyetia Bifurcata and Its Properties Optimization using Artificial Neural Network (ANN)
Kolakoti, Aditya
Prasadarao, Bobbili
Satyanarayana, Katakam
Setiyo, Muji
Köten, Hasan
Raghu, Metta
In this study, an unexplored oil from the wodyetia bifurcata fruit was used for biodiesel production. The transesterification process was implemented to convert the raw oil into wodyetia bifurcata methyl ester (WBME) and the influence of process variables on WBME yield was examined with the response surface method (RSM) assisted Box-Behnken optimization. The results of RSM show that a maximum biodiesel yield of 94.67% was achieved and reaction time was identified as an influencing process variable. The fatty acid composition (FAC) from chromatography reveals the presence of highly unsaturated in WBME and the significant fuel properties of thermal and molecular meet the required fuel standards (ASTM). The obtained fuel properties of WBME are compared with other popularly used biodiesels and observed low kinematic viscosity (3.87mm2/sec) and moderated cetane number (53) for WBME. Furthermore, artificial neural network (ANN) tools are used for the prediction of WBME yield and show an improvement of 0.4% than RSM and low mean square error and a high coefficient of correlation was observed for ANN.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2021-11-25
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6171
10.31603/ae.6171
Automotive Experiences; Vol 5 No 1 (2022); 3-15
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6171/2841
Copyright (c) 2021 Aditya Kolakoti, Bobbili Prasadarao, Katakam Satyanarayana, Muji Setiyo, Hasan Köten, Metta Metta
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6215
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Performance Optimization of Automotive Air-Conditioning System Operating with Al2O3-SiO2/PAG Composite Nanolubricants using Taguchi Method
Zawawi, Nurul Nadia Mohd
Azmi, Wan Hamzah
Ghazali, Mohd Fairusham
Ramadhan, Anwar Ilmar
The performance of an automotive air-conditioning (AAC) system is influenced by a variety of operating conditions. This can be addressed by employing optimization techniques that can suggest the appropriate parameters for the best results. In this study, the optimum operating conditions for a composite nanolubricants-fuelled AAC system were investigate using Taguchi's design of experiment approach and analysis of variance (ANOVA). The motor speed value, initial refrigerant charge, and composite nanolubricants composition ratio were chosen as operating parameters to investigate the AAC system performance, focusing on the coefficient of performance (COP) and compressor work. Orthogonal arrays (ORs) L25 (56) was selected to determine the optimum operating parameters of the AAC system. The optimum values for speed, refrigerant mass, and composition ratio were determined to be A4B1C5 (60:40, 900 rpm and 155 g), respectively. The motor speed was the significant factor influencing both COP and compressor performance by 78.13% and 89.29%. A confirmation test was conducted with the optimum levels of AAC system parameters to verify the efficiency of the Taguchi optimization method. The validation between the optimization results and the experimental results yielded a maximum error of 9.85%, indicating that the findings of this investigation were acceptable.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-03-08
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6215
10.31603/ae.6215
Automotive Experiences; Vol 5 No 2 (2022); 121-136
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6215/3132
Copyright (c) 2022 Nurul Nadia Mohd Zawawi, Wan Hamzah Azmi, Mohd Fairusham Ghazali, Anwar Ilmar Ramadhan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6250
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
An Experimental Study of the TEG Performance using Cooling Systems of Waterblock and Heatsink-Fan
Atmoko, Nugroho Tri
Jamaldi, Agus
Riyadi, Tri Widodo Besar
Two third of the total energy in the internal combustion engine (ICE) system is lost and turns as waste heat through the exhaust system and coolant circulations. Therefore, it is necessary to have a technology that is able to convert waste heat from ICE into electrical energy using thermal electric generator (TEG). To have the best thermoelectric generator (TEG) performance in terms of higher electricity generation, the temperature on the hot surface should be higher, and the temperature on the cold surface should be as low as feasible. The goal of the study was to study how differences in TEG cooling systems affected the overall performance. Water block and heatsink-fan are two different types of cooling systems that have been used in this experiment. The water flow rate in water block cooling systems varies between 200, 300, 400, 500, and 600 l/h. The TEG module was heated with gas-fired lighters. Arduino-based data loggers were used to record hot and cold temperatures on the TEG surface. A USB multimeter is used to measure TEG performance as electrical voltage. The results showed that 300 l/h was the best water flow rate for TEG cooling. When using a water block cooling system instead of a heat sink, the electrical voltage generated by the TEG module is 12 percent higher. This study found that a cooling system with water blocks is superior to heatsink-fan.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6250
10.31603/ae.6250
Automotive Experiences; Vol 5 No 3 (2022); 261-267
2615-6636
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6250/3355
Copyright (c) 2022 Nugroho Tri Atmoko, Agus Jamaldi, Tri Widodo Besar Riyadi
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6263
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Design of Experiment to Predict the Effects of Graphene Nanoplatelets Addition to Diesel Engine Performance
Daud, Sarbani
Hamidi, Mohd Adnin
Mamat, Rizalman
To minimise diesel exhaust emissions, a few methods are commonly used. Engine modifications, combustion optimisation, and exhaust system treatment components are among them. Fuel additives, such as zinc oxide, titanium oxide, aluminium oxide, and cerium oxide, are amongst the most effective methods to increase performance and reduce emissions. Even while positive performance and emission reduction outcomes have been demonstrated, there are worries concerning health toxicity effects. Carbon nanoparticles have been accepted as a fuel additive since they pose little risk to human health. A few studies have been undertaken to investigate the consequences of employing graphene nanoplatelets as fuel additives, thanks to advancements in graphene research. The findings of the study seemed encouraging. However, despite detecting the additive effects of graphene on performance, no more study has been undertaken to forecast the effects on engine performance. The objective of this study was to predict the effects of graphene nanoplatelets as an additive for diesel engines. The performance parameters of the trial were torque, power, BSFC, and BTE. Speed, load, and blend concentration are all considered in this model. Response surface methods and contour plotting with Minitab software were used to generate the prediction model. The results show that the prediction model is within 10% of the experimental data.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-09-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6263
10.31603/ae.6263
Automotive Experiences; Vol 5 No 3 (2022); 467-476
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6263/3721
Copyright (c) 2022 Sarbani Daud, Mohd Adnin Hamidi, Rizalman Mamat
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6304
2022-06-19T15:21:15Z
AutomotiveExperiences:ART
Body City Car Design of Two Passengers Capacity: A Numerical Simulation Study
Putra, Randi Purnama
Yuvenda, Dori
Setiyo, Muji
Andrizal, Andrizal
Martias, Martias
A city car is needed to overcome congestion and parking spaces in urban areas. However, currently, the body design of the city car is still experiencing problems, namely the value of the large drag coefficient, which causes an increase in fuel consumption. This study aims to design a city car body with two passengers that is more aerodynamic so as to minimize fuel use. This research method is a numerical simulation model using the ANSYS fluent students version 2021. Parameters in the form of drag coefficient values, velocity streamlines and velocity contours on the city car are aerodynamic aspects that are analyzed. The results show that the dimensions of the designed city car have a length of 2.59 m, a width of 1.6 m, and a height of 1.52 m by considering the ergonomic parameters and comfort of the user so that it fits the character of the people in Indonesia. In addition, from the independence grid analysis performed, the value of the number of meshes that have the smallest error value is obtained, namely mesh C (the number of meshes is 129,635). Mesh C has an error of 7.2%. It was found that as the velocity increases, the value of the drag coefficient (CD) produced is relatively smaller. In a city car with a velocity of 10 m/s, the drag coefficient value is 0.599, at a velocity of 20 m/s, the drag coefficient value is 0.594, and a velocity of 30 m/s is a drag coefficient value of 0.591.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6304
10.31603/ae.6304
Automotive Experiences; Vol 5 No 2 (2022); 163-172
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6304/3242
Copyright (c) 2022 Randi Purnama Putra, Dori Yuvenda, Muji Setyo, Andrizal Andrizal, Martias Martias
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6335
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Acetone-Butanol-Ethanol as the Next Green Biofuel - A Review
Rahaju, Sri Mumpuni Ngesti
Veza, Ibham
Tamaldin, Noreffendy
Sule, Ahmed
Opia, Anthony C.
Abdulrahman, Mohammed Bashir
Djamari, Djati Wibowo
The development of diesel engines faces challenging targets to satisfy stringent emissions regulation. To address this issue, the use of alcohol biofuels such as methanol and ethanol has attracted numerous attention due to their physicochemical properties and the possibility to be produced from renewable sources and agricultural waste material. Compared to ethanol, longer carbon alcohol such as butanol has higher energy density and lower latent heat, hygroscopicity, aggressivity, and toxicity. It can also be produced from biomass. Yet, despite its noticeable advantages, the use of butanol in the internal combustion engine is hindered by its low production efficiency. If Acetone-Butanol-Ethanol (ABE) is further distilled and purified, pure butanol and ethanol can be acquired, but this involves an energy-intensive process, thus increasing the production cost of butanol. To solve this problem, the direct use of ABE as a biofuel is considered a promising strategy. The idea of using ABE directly in internal combustion engines is then proposed to solve the economic issue of high butanol production costs. A scoping literature review was performed to screen and filter previously published papers on ABE by identifying knowledge gaps instead of discussing what is already known. Therefore, repeated and almost identical studies were eliminated, thus reporting only the most significant and impactful published papers. In terms of the objective, this article aims to review the progress of ABE as a promising biofuel in regard to the engine performance, combustion, and emission characteristics. Focus is also given to ABE’s physicochemical properties. Despite their considerable importance, the fuel properties of ABE are rarely discussed. Therefore, this review article intends to analytically discuss the physicochemical properties of ABE in terms of their calorific value, density, kinematic viscosity, and distillation. In general, it is concluded that engine emissions such as NOx and Particulate Matter (PM) could be reduced considerably with the use of ABE. Yet, the BSFC was found to increase due to the relatively lower calorific value and density of ABE blends as opposed to gasoline or diesel fuel, thereby increasing its fuel consumption. In terms of ABE’s fuel properties, in general, ABE can be used due to its satisfying physicochemical properties. However, it should be noted that the ABE-gasoline/diesel blends are greatly influenced by each of its component ratios (acetone, butanol, ethanol).
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6335
10.31603/ae.6335
Automotive Experiences; Vol 5 No 3 (2022); 251-260
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6335/3356
Copyright (c) 2022 Sri Mumpuni Ngesti Rahaju, Ibham Veza, Noreffendy Tamaldin, Ahmed Sule, Anthony C. Opia, M. B. Abdulrahman, Djati Wibowo Djamari
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6352
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Recent Advances in Diesel-Biodiesel Blended with Nano-Additive as Fuel in Diesel Engines: A Detailed Review
Sule, Ahmed
Latiff, Zulkarnain Abdul
Abbas, Mohammed Azman
Veza, Ibham
Opia, Anthony C.
Global emission of gases has increased rapidly due to higher combustion of fossil fuels arising from increasing world population which has led to a greater number of manufacturing industries and ‘on-road vehicle (ORV)’ users. Researchers have attributed cause of global warming to gases emissions which correspondingly lead to climate change with devastating repercussions. Currently, climate change is a general issue and world leaders have been tasked to cut down emissions of gases that directly affect the ecosystem and influence climate change. Biodiesel which is an alternative to fossil fuels face many challenges and to tackle some limitations with biodiesel researchers blends biodiesels in various proportional ratio to diesel fuel. This paper, therefore, concentrates on reviewing the use of additives specifically nano-additives by researchers recently to alter and boost desired characteristics in diesel-biodiesel fuel; it also examines the synthesis of nano-additives; challenges, and advances made. This paper further analysed, reviewed, and compared recent results from nano-additive use with respect to emissions, fuel consumption, brake thermal efficiency, and engine power, establishes the merits and demerits of diverse nano-additives, and finally presents a conclusive opinion on nano-additive usage with diesel fuels in diesel engines.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6352
10.31603/ae.6352
Automotive Experiences; Vol 5 No 2 (2022); 182-216
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6352/3264
Copyright (c) 2022 Ahmed Sule, Zulkarnain Abdul Latiff, Mohammed Azman Abbas, Ibham Veza, Anthony C. Opia
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6447
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
The Effect of Ethanol on Brake Torque, Brake Specific Fuel Consumption, Smoke Opacity, and Exhaust Gas Temperature of Diesel Engine 4JB1 Fueled by Diesel-Jatropha Oil
Syarifudin, Syarifudin
Fatkhurrozak, Faqih
Sanjaya, Firman Lukman
Yohana, Eflita
Syaiful, Syaiful
Wibowo, Agus
The growth of diesel vehicles has consequences for the consumption of diesel oil. Therefore, using Jatropha as an alternative fuel reduces dependence on diesel oil and it does not interfere with food availability. However, the high viscosity of jatropha oil makes the fuel pump work harder. In addition, the low calorific value reduces the quality of the fuel which creates unique problems. Ethanol, with its low viscosity and high oxygen content, is expected to be effective in reducing jatropha problems for diesel engines. Therefore, this study aims to evaluate the addition of ethanol to the brake torque, brake-specific fuel consumption, exhaust gas temperature, and smoke opacity. The 4JB1 diesel engine with an EGR was tested on a 10% (DJ10) and 20% (DJ20) diesel-jatropha mixture. The experimental results showed that brake torque increased by 1.51% in the DJ10 application, brake specific fuel consumption decreased by 7.05%, exhaust gas temperature decreased by 0.67%, and smoke opacity increased by 25.91%. While in the DJ20 application, brake torque increased by 3.19%, brake-specific fuel consumption decreased by 30.08%, exhaust gas temperature decreased by 0.67%, and smoke opacity increased by 69.03%.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-29
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6447
10.31603/ae.6447
Automotive Experiences; Vol 5 No 2 (2022); 230-237
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6447/3288
Copyright (c) 2022 Syarifudin Syarifudin, Faqih Fatkhurrozak, Firman Lukman Sanjaya, Eflita Yohana, Syaiful Syaiful, Agus Wibowo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6593
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Strategy for Safe Passenger Transport during the COVID-19 Pandemic: From Review to Recommendation
Rusdjijati, Retno
Subrata, Sumarno Adi
Pambuko, Zulfikar Bagus
Setiyo, Muji
Noga, Marcin
The COVID-19 pandemic caused a large-scale disruption to countries worldwide particularly in road traffic changes and people mobility. To respond to this, a titanic amount of published studies had investigated those concerns. However, a study describing mitigation efforts relating to this pandemic in the transportation sector is scarce. On the other hand, the lack of coordination between transportation authorities, public transport operators, and passengers triggers complex issues including the accumulation of passengers at bus stations that potentially increase virus transmission. For this reason, this article intends to investigate and establish strategies for safe passenger transport. The finding of the article presented four basic strategies as follows: First, a coordinated response among stakeholders and government is needed to develop comprehensive policies. Second, coordinated demand management is required to maintain a balance between government policies and citizen demands. Third, provide health education on Personal Protective Equipment (PPE) to public transport crews. Fourth, protecting the passengers and maintaining trust in public transport services. Additionally, it is recommended to provide adequate infrastructure, perform regular check-ups (i.e. assessing body temperature before entering public transportation), provide up-to-date COVID-19 health alert, and implement health protocol. Also, when this pandemic is over, the use of fuel-based transportation needs to be reduced, especially for short trips. To optimize this strategy, the role of government and health authorities on the policy side is crucial. Also, a good response from public transport operators and passengers is the key to defeat the COVID-19 pandemic in the transportation area.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-02-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6593
10.31603/ae.6593
Automotive Experiences; Vol 5 No 2 (2022); 90-102
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6593/3110
Copyright (c) 2022 Retno Rusdjijati, Sumarno Adi Adi Subrata, Zulfikar Bagus Pambuko, Muji Setiyo, Marcin Noga
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6599
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Exhaust Gas Emissions of Homogeneous Gasoline-Methanol-(Ethanol) Blends
Waluyo, Budi
Purnomo, Bagiyo Condro
In recent years, one of the most logical efforts made to reduce the dependence on fossil energy sources is the use of a gasoline-methanol fuel blend. However, the problem in using a gasoline-methanol blend as fuel is that the methanol will eventually separate itself from the gasoline unless they are properly blended together, this is because methanol has a polar hydroxyl group called monohydric that binds water vapor together, causing the mixture to separate. Previous research showed that adding a small amount of ethanol to the gasoline-methanol blend makes it a homogeneous blend. Therefore, this research aims to identify the exhaust emissions of the homogenous gasoline-methanol-(ethanol) blend. For each blended fraction was tested on a single-cylinder four-stroke engine. The emission test is carried out in two stages which include the gasoline mode, and the alcohol mode. These two measurement modes undergo a validation process to correct the differences in the measurement results of the gasoline-methanol-ethanol blends. The test results show that increasing the methanol fraction in the gasoline-methanol-(ethanol) fuel blend results in reduced emission of carbon monoxide and unburnt hydrocarbon because methanol has a high enthalpy of evaporation, which increases both volumetric efficiency and complete combustion. In addition, the increase in the methanol fraction in the gasoline-methanol-(ethanol) blend showed a higher increase in carbon dioxide emissions. This is because methanol and ethanol have a much lower energy content than gasoline. Therefore, its energy production per unit time requires more fuel molecules.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6599
10.31603/ae.6599
Automotive Experiences; Vol 5 No 2 (2022); 173-181
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6599/3243
Copyright (c) 2022 Budi Waluyo, Bagiyo Condro Purnomo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6604
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Development of Test Cycle for Centrifugal Clutch of CVT Driven Scooters Intended for Urban Traffic Conditions
Panchal, Dhruv U.
Patel, Bhavesh K.
The present study deals with the development of a test cycle for the centrifugal clutch of continuously variable transmission (CVT) driven scooters. Centrifugal clutch experiences different duty cycles during the usage of scooters in city traffic and highways during its lifetime. Since the friction characteristics of the centrifugal clutch are controlled by acquired factors, it is difficult to predict ideal friction characteristics under all conditions. The wear of friction lining increases due to heat generated in the clutch assembly because of the repeated “stick-slip” phenomena. Therefore, an attempt has been made for developing à new test cycle by keeping the engagement frequency as a reference. Road load data for three different riding conditions have been collected and analyzed. The developed test cycle has been automated on the centrifugal clutch test bench and a new set of clutch liners was tested thoroughly. The surface roughness, thickness, and wear of clutch liners have been observed and evaluated against the field vehicles. For the surface roughness, maximum deviations of 3.74%, 3.36%, and 2.16% have been observed for trailing, middle and leading sections of clutch liners respectively. For the thickness, maximum deviations of 3.06%, 2.59%, and 3.14% have been observed for trailing, middle and leading sections of clutch liners respectively. The developed test cycle demonstrates a good correlation with field use.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6604
10.31603/ae.6604
Automotive Experiences; Vol 5 No 2 (2022); 150-162
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6604/3241
Copyright (c) 2022 Dhruv U. Panchal, Bhavesh K. Patel
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6711
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Selectivity of the New Catalyst ZnO-MCM-48-CaO in Esterification of Calophyllum inophyllum Oil
Kolo, La
Firdaus, Firdaus
Taba, Paulina
Zakir, Muhammad
Soekamto, Nunuk Hariani
The synthesis of MCM-48 containing surfactants (CTAB and Triton X-100), ZnO, and CaO aimed to find a potential heterogeneous catalyst in the esterification of Calophyllum inophyllum oil to biodiesel. This research is important in the production of biodiesel from vegetable oils with more than 2% free fatty acids (FFA), such as Calophyllum inophyllum oil using heterogeneous catalysts. Synthesis of heterogeneous catalysts, MCM-48 and ZnO-MCM-48-CaO (ZMC), using the hydrothermal method at various calcination temperatures was conducted to find the optimum calcination temperature for the reaction. The activity of the catalyst in the reaction was determined using acid-base titration methods and GC-MS. The MCM-48 catalyst calcined at 650 °C (MCM-48/650) had a catalytic activity of 35.74% and was selective for converting linoleic acid in Calophyllum inophyllum oil to biodiesel. In addition, this catalyst was also capable of cracking the compounds contained in Calophyllum inophyllum oil into suitable hydrocarbons for biodiesel. In the esterification of vegetable oils, four heterogeneous catalysts (MCM-48/550, ZMC/550, ZMC/650, and ZMC/750) had the potential to replace conventional catalysts (H2SO4), particularly in the generation of biodiesel from Calophyllum inophyllum oil.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-04-18
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6711
10.31603/ae.6711
Automotive Experiences; Vol 5 No 2 (2022); 217-229
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6711/3247
Copyright (c) 2022 La Kolo, Firdaus Firdaus, Paulina Taba, Muhammad Zakir, Nunuk Hariani Soekamto
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6830
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
A Review of Business Model Transformation in Transportation Business Post Pandemic
Kaukab, M. Elfan
Bachtiar, Nia Kurniati
This study reviews post-pandemic business models, as demonstrated in transportation business by employing literature study method. Data obtained includes 56 articles published from 2020 to 2022 during Covid-19 pandemic that transform the business model. The results of the study indicate that there are six streams in the literature, namely (1) the impact of Covid-19 on the transportation sector, (2) the built environment for business model transportation, (3) the need for transformation of business models due to new policies, (4) changes in consumer choices and behavior, (5) supply chain management and transportation transformation, and (6) transportation business model planning. The synthesis resulted in a transportation sustainable business model transformation framework involving threat identification, company character, support, built environment, resources and capabilities, design and development, and delivery and evaluation. The transportation business needs to identify aspects of transportation services that need to be improved, adjust internal resources and capabilities, reconfigure the business, and encourage collective agreements to transform the post-pandemic transportation business model. This research contributes to the literature on transform the regular business model. It emphasizes the importance of resources and capabilities to drive business transformation internally and externally in the context of the transportation business.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-09-10
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6830
10.31603/ae.6830
Automotive Experiences; Vol 5 No 3 (2022); 452-466
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6830/3717
Copyright (c) 2022 M. Elfan Kaukab, Nia Kurniati Bachtiar
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6852
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Resin Matrix Composition on the Performance of Brake Pads Made from Durian Seeds: From Computational Bibliometric Literature Analysis to Experiment
Nandiyanto, Asep Bayu Dani
Al Husaeni, Dwi Novia
Ragadhita, Risti
Fiandini, Meli
Al Husaeni, Dwi Fitria
Aziz, Muhammad
The purpose of this study was to analyze the effect of a resin composition on the performance of brake pads with durian seeds (BDs) as the base material. Experiments were done by attaching saw-milled BD particles to a polymer matrix. Various resin compositions were used for preparing the brake pad, which was then tested (press test, puncture test, and friction test). Physical properties (i.e., particle size, surface roughness, morphology, and density), as well as mechanical properties (ie: hardness, wear rate, and friction coefficient properties), were investigated. Based on observations, the best mechanical properties were found in the highest resin mixture, reaching a compressive strength value of 2.4 MPa. The impact of the homogeneity of the brake pad filler particles is the main reason. The high resin composition causes more cross-links to be formed. This research demonstrates the prospective environmentally friendly and inexpensive brake pads used to replace current products that use hazardous materials.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-11
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6852
10.31603/ae.6852
Automotive Experiences; Vol 5 No 3 (2022); 328-342
2615-6636
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6852/3363
Copyright (c) 2022 Asep Bayu Dani Nandiyanto, Dwi Novia Al Husaeni, Risti Ragadhita, Meli Fiandini, Dwi Fitria Al Husaeni, Muhammad Aziz
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6882
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Comprehensive Review of Nanoparticles Dispersion Technology for Automotive Surfaces
Abidin, Sharifah Norsakinah Syed Zainal
Azmi, Wan Hamzah
Zawawi, Nurul Nadia Mohd
Ramadhan, Anwar Ilmar
Many innovations arose from the continual and thorough monitoring of overlooked characteristics of materials found in the environment. Automotive paints are always constantly exposed to a broad range of ambient temperature conditions, which reduces their longevity and encourages algae development. Through the effective incorporation of nanotechnology with this lotus effect, it has become possible to provide self-cleaning ability along with air purification and antibacterial performance to automotive surfaces like paint and coating. The addition of nanoparticles such as Titanium dioxide (TiO2) and Silicon dioxide (SiO2) helps to improve functionalities like water or stain resistance, ultra-violet protection, and scratch resistance. When the nanoparticles were added into paint, they degraded the polluting compounds on the material's surface by photo catalysis. Multiple photocatalytic functions and self-cleaning properties were observed in nanoparticles added to polyester acrylic paint. Therefore, this paper discussed the history of automotive painting, nanopaint technology, previous research on the method preparation, development, and current progress, the environmental health aspects of nanotechnology, as well as the performance in terms of automotive surfaces. The study discovered the requirements for nanoparticle dispersion and coating uniformity and appearance on automotive surfaces, which will serve as a benchmark for dispersion and coating methods for automotive surfaces.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-07
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6882
10.31603/ae.6882
Automotive Experiences; Vol 5 No 3 (2022); 304-327
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6882/3359
Copyright (c) 2022 Sharifah Norsakinah Syed Zainal Abidin, Wan Hamzah Azmi, Nurul Nadia Mohd Zawawi, Anwar Ilmar Ramadhan
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6895
2022-03-19T17:15:49Z
AutomotiveExperiences:Ed
Renewable and Sustainable Green Diesel (D100) for Achieving Net Zero Emission in Indonesia Transportation Sector
Setiawan, Indra Chandra
Setiyo, Muji
Because of the significant demand for fuels in the transportation sector in Indonesia, as well as concerns about energy security and global warming, renewable, sustainable, and alternative energy sources such as biofuels are required to replace petroleum-based fuels. Promoting the production of green diesel from crude palm oil (CPO) using palm fatty acid distillate (PFAD) as its byproduct will make the overall process more efficient and environmentally friendly in Indonesia. As a result, CPO-based diesel production will be a green and high-value sector. By replacing fossil diesel with green diesel, a sustainable energy source can be assured without further depleting current fossil fuels, leading to cleaner and greener energy in the future and meeting the net-zero aim by 2060.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-03-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6895
10.31603/ae.6895
Automotive Experiences; Vol 5 No 1 (2022); 1-2
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6895/3149
Copyright (c) 2022 Indra Chandra Setiawan, Muji Setiyo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/6913
2022-05-12T09:17:56Z
AutomotiveExperiences:ART
Analysis of User’s Comfort on Automated Vehicle Riding Simulation using Subjective and Objective Measurements
Mohd Norzam, Muhammad Nur Aliff
Karjanto, Juffrizal
Md. Yusof, Nidzamuddin
Hassan, Muhammad Zahir
Hakim Zulkifli, Abd Fathul
Ab Rashid, Ahmad Azad
The naturalistic study investigated the potential influence of personal driving preferences (assertive and defensive driving style) on users; comfort when being driven in an automated vehicle with a defensive driving style. Adopted the Wizard of Oz design, the study involved three phases: pre-, during, and post-driven to measure their comfort, perceived safety, and likeness as well as motion sickness propensity through self-report questionnaire and heart rate variation. After answering a set of questionnaires, participants were exposed to simulated driving in an automated vehicle with a defensive driving style. A statistical analysis produced no statistically significant difference between assertive and defensive participants. This indicates an overall preference, perceived comfort without severe motion sickness propensity to the defensive driving style of the autonomous vehicle, regardless of participants’ personal driving styles.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-05-09
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6913
10.31603/ae.6913
Automotive Experiences; Vol 5 No 2 (2022); 238-250
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/6913/3300
Copyright (c) 2022 Muhammad Nur Aliff Mohd Norzam, Juffrizal Karjanto, Nidzamuddin Md. Yusof, Muhammad Zahir Hassan, Abd Fathul Hakim Zulkifli, Ahmad Azad Ab Rashid
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7000
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
The Effects of Canola Oil/Diesel Fuel/Ethanol/N-Butanol/Butyl Di Glycol Fuel Mixtures on Combustion, Exhaust Gas Emissions and Exergy Analysis
Ozer, Salih
Akçay, Mehmet
Doğan, Battal
Erol, Derviş
Setiyo, Muji
In recent years, there have been many studies on the widespread use of liquid fuels derived from biomass. A common emphasis in such studies is on fewer exhaust gas emissions and the expansion of renewable fuel production. Biodiesel is considered to be an important type of biomass fuel that is already produced commercially. But the production of biodiesel is laborious and comprises combination of several chemical processes. This study examines the effects of using oil used in biodiesel production with oxygen-rich chemicals on combustion (in-cylinder pressure (Cp), heat release rate (HRR), rate of pressure rise (RoPR), and cumulative heat release (CHR)), exhaust emission values, energy and exergy analysis. In this study, the effects of butyl di glycol use were also investigated and compared with commercially used ethanol and n-butanol. A transesterification method produced from canola oil the biodiesel used in the experiments. The experimental fuels were mixed volumetrically. For this purpose, experiments were carried out with canola biodiesel produced at 20% (D80B20) in diesel fuel and the results of the experiments were recorded. Under the same conditions, experiments were carried out by adding ethanol (D60C20E20), n-butanol (D60C20B20), butyl di glycol (D60C20G20) at a rate of 20% by volume to the canola oil added to the diesel fuel. The lowest values in terms of thermal and exergy efficiency were obtained in D60C20G20 fuel at all engine loads. Also, the highest entropy generation was calculated at all engine loads for this fuel blend.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7000
10.31603/ae.7000
Automotive Experiences; Vol 5 No 3 (2022); 268-287
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eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7000/3357
Copyright (c) 2022 Salih Ozer, Mehmet Akçay, Battal Doğan, Derviş Erol, Muji Setiyo
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7002
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Multi-objective Optimization of Sansevieria Trifasciata Fiber Reinforced Vinyl Ester (STF/VE) Bio-composites for the Sustainable Automotive Industry
Shieddieque, Apang Djafar
Mardiyati, Mardiyati
Sukarman, Sukarman
Widyanto, Bambang
Aminanda, Yulfian
Bio-composite materials have taken an extensive interest in research over the years due to their excellent properties, such as excellent mechanical and physical properties, stiffness, and low density/lightweight. The exceptional properties of bio-composite materials have had a widespread application in several industries, such as; the packaging industry, construction, automotive, and other related engineering fields. This research investigates mechanical, physical, and microstructure properties of Sansevieria Trifasciata (STE) natural fiber, -reinforced Vinyl Ester (STF/VE) bio-composite. The mechanical and physical properties of STF/VE bio-composites, including the tensile strength and density, are investigated through fibre preparation, orientation, and fibre volume fraction parameters. The STF/VE bio-composite tensile strength coupon is manufactured using the bio-composite transfer moulding (BTM) process and with pressure moulding. The Taguchi experimental design and analysis of variance (ANOVA) are selected to investigate the effect of variables on the mechanical properties model. The alkali preparation of STF, unidirectional fibre orientation, and fibre volume fraction improve tensile strength. Non-alkali treatment and random fibre orientatio, on the other hand, result in a reduction of density. The results of the ANOVA analysis show that the fibre volume fraction (wt.%) is the variable that most significantly affects the tensile strength and density responses, with contributions of 50.57% of tensile strength and 51.34% of density, respectively. Based on the optimization results, the STF/VE with alkali treatment, unidirectional, and 15 w.t.% is chosen as the best bio-composite formulation, with the best tensile strength-density balance. It indicates that the optimum parameter was successfully achieved among the samples examined in this work.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-06
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7002
10.31603/ae.7002
Automotive Experiences; Vol 5 No 3 (2022); 288-303
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7002/3358
Copyright (c) 2022 Apang Djafar Shieddieque, Mardiyati Mardiyati, Sukarman Sukarman, Bambang Widyanto, Yulfian Aminanda
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7005
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
A Review of the Emission, Performance, Combustion, and Optimization Parameters in the Production of Biodiesel from Waste Cooking Oil
Park, Dae Ho
Nana, Feyisola Idowu
Cho, Haeng Muk
With the rising consumption of energy comes the challenge of the depletion of fossil fuels. Fossil fuels are non-renewable and finite energy sources with increasing energy demand as a result of the rise in human population and industrialization. This concern has led researchers to seek alternative energy sources that are both economically, technically viable, and environmentally beneficial. Biodiesel is considered an alternative source of energy supply. It is non-toxic, biodegradable, carbon-neutral, and ecologically friendly. However, the high cost of producing biodiesel from feedstocks impedes its commercialization. Hence, WCO used in the production of biodiesel helps to reduce the overall cost of production. The characteristics of the performance, emission, and combustion of the biodiesel produced from the transesterification of WCO are reviewed in this study. The molar ratio of methanol to oil, the concentration of the catalyst, reaction temperature, and time were used to investigate the optimization parameter required in the synthesis of biodiesel from WCO. The number of times the catalyst can be reused while maintaining a good catalytic activity in biodiesel production was also studied. The optimization models and techniques for the prediction of biodiesel yield were also studied.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-20
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7005
10.31603/ae.7005
Automotive Experiences; Vol 5 No 3 (2022); 371-388
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7005/3406
Copyright (c) 2022 Dae Ho Park, Feyisola Idowu Nana, Haeng Muk Cho
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7029
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
The Effect of Surface Hardening on The HQ 705 Steel Camshaft Using Static Induction Hardening and Tempering Method
Nugroho, Sri
Fitriyana, Deni Fajar
Ismail, Rifky
Nurcholis, Thesar Aditya
Cionita, Tezara
Siregar, Januar Parlaungan
Induction hardening (IH) is a popular choice for automotive components such as camshafts for its ability to harden portions of a component selectively. The camshaft will contact the tappet, connected to the rocker arm, to open and close the valve whenever the engine is running. This contact between the camshaft and the tappet causes wear on the camshaft surface. IH of the camshaft is required to improve wear resistance and service life, as well as core elasticity to absorb high torsional stresses. It is known that studies about IH on camshafts are still very limited. This study aims to determine the effect of the induction hardening and tempering treatment on the mechanical properties of the camshaft made of HQ 705 steel. The induction hardening carried out in this study uses different parameter settings such as heating time and output current. The camshaft specimen is hardened by static induction and then quenched in oil. The specimens are tempered after induction hardening with different temperatures and holding times to adjust the hardness level and reduce brittleness. Hardness, macro photographs, micrograph, and wear tests were conducted to determine the mechanical properties of the camshaft specimen after the induction hardening and tempering process. This study indicates that induction hardening with an output current of 747 A for 15 seconds followed by tempering at 150 °C for 15 seconds on specimen 1 produced the best mechanical properties. On the surface of these specimens found more martensite content while there was no microstructural change on the inside. The surface hardness of these specimens is 44 HRC (Rockwell C Hardness), while the inside is 26 HRC. Meanwhile, specific wear decreased by 45.45%.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-12
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7029
10.31603/ae.7029
Automotive Experiences; Vol 5 No 3 (2022); 343-354
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7029/3364
Copyright (c) 2022 Sri Nugroho, Deni Fajar Fitriyana, Rifky Ismail, Thesar Aditya Nurcholis, Tezara Cionita, Januar Parlaungan Siregar
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7050
2023-05-02T07:42:30Z
AutomotiveExperiences:ART
Comparison of Various Prediction Model for Biodiesel Cetane Number using Cascade-Forward Neural Network
Rahaju, Sri Mumpuni Ngesti
Hananto, April Lia
Paristiawan, Permana Andi
Mohammed, Abdullahi Tanko
Opia, Anthony Chukwunonso
Idris, Muhammad
Cetane number (CN) is one of the important fuel properties of diesel fuels. It is a measurement of the ignition quality of diesel fuel. Numerous studies have been published to predict the CN of biodiesels. More recently, the utilization of soft computing methods such as artificial neural networks (ANN) has received considerable attention as a prediction tool. However, most studies in the use of ANN for estimating the CN of biodiesels have only used one algorithm to train a small number of datasets. This study aims to predict the CN of 63 biodiesels based on the fatty acid methyl esters (FAME) composition by developing an ANN model that was trained with 10 different algorithms. To the best of our knowledge, this is the first study to predict the CN of biodiesels using numerous ANN training algorithms utilizing sizeable datasets. Results revealed that the ANN model trained with Levenberg-Marquardt gave the highest prediction accuracy. LM algorithm successfully predicted the CN of biodiesels with the highest correlation and determination coefficient (R = 0.9615, R2 = 0.9245) as well as the lowest errors (MAD = 2.0804, RMSE = 3.1541, and MAPE = 4.2971). Hence, the Cascade neural network trained with the LM algorithm could be considered a promising alternative to the empirical correlations for predicting biodiesel’s CN.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2023-01-01
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7050
10.31603/ae.7050
Automotive Experiences; Vol 6 No 1 (2023); 4-13
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7050/3926
Copyright (c) 2023 Sri Mumpuni Ngesti, April Lia Hananto, Ridwan Usman, Abdullahi Tanko Mohammed, Anthony C Opia, Muhammad Idris
http://creativecommons.org/licenses/by-nc/4.0
oai:ojs.pkp.sfu.ca:article/7067
2023-02-27T05:31:56Z
AutomotiveExperiences:ART
Aerodynamic Characteristics of Ahmed Body with Inverted Airfoil Eppler 423 and Gurney Flap on Fastback Car
Arifin, Zainal
Suyitno, Suyitno
Tjahjana, Dominicus Danardono Dwi Prija
Juwana, Wibawa Endra
Rachmanto, Rendy Adhi
Brillianto, Chico Hermanu
Ubaidillah, Ubaidillah
Prasetyo, Singgih Dwi
Muhammad, Arinal Falah
Rosli, Mohd Afzanizam Mohd
The installation of aerodynamic devices, such as rear wings with the application of a Gurney flap, is very important to improve the performance of vehicles and can generate downforce and reduce slip when a car turns and brakes. The goal of this study was to determine the aerodynamic characteristics of the addition of a rear wing using an Eppler 423 airfoil, which was applied with a Gurney flap featuring variations in the angle of attack and the height of the Gurney flap. The rear wing was mounted on the Ahmed body with a rear slant angle of 15°, which is similar to the configuration on a fastback type car. This research was conducted by 3D modeling through computational fluid dynamics (CFD) simulation using ANSYS Student R18.2 by using ahmed body design. There are three variations in the angle of attack for the rear wing (0°, 7.5°, and 15°), as well as five variations in Gurney flap height of 0%, 0.5%, 1%, 1.5%, and 2% for the chord-line length. In this study, the best variation was found at an angle of attack of 15⁰ with a height of 2% C. From this configuration improved CL/CD ratio by 25.36% when compared to the results without a Gurney flap.
Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)
2022-06-19
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7067
10.31603/ae.7067
Automotive Experiences; Vol 5 No 3 (2022); 355-370
2615-6636
2615-6202
eng
https://journal.unimma.ac.id/index.php/AutomotiveExperiences/article/view/7067/3370
Copyright (c) 2022 Zainal Arifin, Suyitno Suyitno, Dominicus Danardono Dwi Prija Tjahjana, Wibawa Endra Juwana, Rendy Adhi Rachmanto, Chico Hermanu Brillianto, Ubaidillah Ubaidillah, Singgih Dwi Prasetyo, Arinal Falah Muhammad, Mohd Afzanizam Mohd Rosli
http://creativecommons.org/licenses/by-nc/4.0
35a5e63720e5ddde543f3f1e946ab0d8