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Purwanto, Wawan
Universitas Negeri Padang
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Journal : Automotive Experiences

 1 
Characteristics of Diamond-Like Carbon Coating Using Plasma Assisted Chemical Vapor Deposition on Steel Tool Saifudin Saifudin; Wawan Purwanto; Jerry Chih Tsong Su
Automotive Experiences Vol 3 No 1 (2020)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1037.388 KB) | DOI: 10.31603/ae.v3i1.3417

Abstract

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.
Study on the Addition of A Swirling Vane to Spark Ignition Engines Fueled by Gasoline and Gasoline-Ethanol Wawan Purwanto; Jerry Chih Tsong Su; Muhammad Latifur Rochman; Budi Waluyo; Krismadinata Krismadinata; Ahmad Arif
Automotive Experiences Vol 6 No 1 (2023)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7981

Abstract

Although the technology of fuel injection in motorcycles has reached ports and direct injection, motorcycles with carburetors are still used. In this research, the carburetor was modified by adding a swirling vane. This study is intended to provide an explanation regarding engine performance which includes torque, power, mileage, emissions, and engine oil temperature. The study begins with a review of the shape and flow characteristics of the swirling vane based on the largest flow according to previous studies. Then, a swirling vane is built and tested to ensure its optimal shape. The findings were compared with conventional carburetor-based engines that had not been treated. Experiments were also carried out on gasoline-ethanol to obtain optimal results and use them appropriately for alternative fuel applications. A comparison of data on torque, power, exhaust emissions, temperature, and mileage reveals that vehicles modified with swirling vanes have better performance. Furthermore, based on the results of gasoline-ethanol application tests, this design is only suitable for use up to E25.
Study on Solar Powered Electric Vehicle with Thermal Management Systems on the Electrical Device Performance Herlambang, Yusuf Dewantoro; Sulistiyo, Wahyu; Margana, Margana; Apriandi, Nanang; Nursaputro, Septiantar Tebe; Marliyati, Marliyati; Setiyo, Muji; Purwanto, Wawan; Rochman, Muhammad Latifur; Shyu, Jin Cherng
Automotive Experiences Vol 7 No 1 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10506

Abstract

This study aims to determine the reliability of applying a thermal management system in conjunction with Internet of Things in solar electric cars. In conventional electric cars or those whose driving energy source comes from gasoline fuel; the applied thermal management system is mainly used as a coolant for the internal combustion engine. However, for electric cars the thermal management system may be used for the main components such as controllers that convert solar module energy into electricity and batteries. Results from tests utilizing six DC fans for air cooling of the thermal management system yield two variations of battery charging conditions from the solar modules, namely variations of 25 and 400 turns of the trimmer constant current step-up charger. Test results from the proposed thermal management system show that the highest step-up charger temperature is 35.75 °C with voltage of 57.64 V for the variation of 25 laps. The test results on the battery voltage and temperature show that the highest battery temperature reaches 31.75 °C with voltage of 57.3 V at the variation of 25 rounds.
Exploration of Engine Parameters for Emission Reduction in Gasoline-Ethanol Fueled Engines Purwanto, Wawan; Maksum, Hasan; Arif, Ahmad; Rochman, Muhammad Latifur; Sujito, Sujito; Padrigalan, Kathleen Ebora
Automotive Experiences Vol 7 No 3 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12467

Abstract

The main objective of this study is to develop spark ignition engine parameters that allow complete combustion while reducing dependence on fossil fuels. To achieve this goal, optimization of compression ratio, gasoline-ethanol mixture, ignition timing, and spark plug type was used. In addition, this study used water injection that continuously injects water before the intake manifold. In this study, the Taguchi method with the L9 orthogonal array was applied. According to the experimental verification results, the best combination to reduce exhaust emission levels is to utilize gasoline-ethanol (E70), a compression ratio (CR) of 15.6:1, an ignition degree of +4°, and a platinum spark plug. Meanwhile, the presence of water injection at 1.45 ml/s helps reduce vehicle exhaust pollutants.
Co-Authors Abadi, Zainal Abadi Abdul Syukur Alfauzi Abimanyu, Bintang Abratiguin, Joel O. Adam Rasyid Sidiqi Agus Baharudin Agus Bahrudi1 Agusrianto, Rival Ahmad Arif Ahmad Arif Ahmad Ilham Ahmad Junaidi Ahmad, Syalsa Billa Aken Derisman Al Afif, Ashim Al Ichlas Imran Alamsah Alexsandra, Alexsandra Alfiza Candra Ali Basrah Pulungan Alim Kusuma Ambiyar, Ambiyar Aminuyati Anbiya, Rafiqul Andre, Joni Andrizal Andrizal Andrizal Anreski, Vanny Ariadi, Mhd. Fajar Arif Brinaldi Arif, Ahmad Abadi Arya Adhi Pratama Asmar Yulastri Asni, Idrus Asri, Angeline Pramesha Athaya Atsiq Aulia Fajrin Rahmadani Nasution Azani, Magribfa Baehaqi Baharudin, Agus Bahrul Amin Binta Ustafiano Bintha Ustafiano Buala Jefriana Waruwu Budhi Prasetiyo Budi Utomo Wisesa Budi Waluyo Dedi Setiawan Dedi Setiawan Dedy Agustanto Dedy Irfan Desmiarni Desmiarni Donny Fernandez Dony Novaliendry Dori Yuvenda Dwi Sudarno Putra Dwi Sudarno Putra edy susanto Eko Indrawan Eliza Baharo Enjela Dwi Ananda Erik Fernandes Ernal Nofiandri Erzeddin Alwi Fadel Muhammad Fakhri Fadhli Ranuharja Fadila Fadila, Fadila Fadli Randa Fahmi Rizal Fajar Hanifudin Afifi Faris Afif Fatahul Arifin Faulina, Faulina Faunesya, Faunesya Fauzan . Fauzan Fauzan Fauzan Zaharbaini Fauzan, Nauval Fazrin Hidayat Fazrin Hidayat Febiola, Aulia Azhari Febriansyah, Ilham Fenandes, Yose Ganefri Giatman, M Ginola Gunawan, Akmal Guswara, Ade Mukhfir Habibullah Habibullah Hakim, Zaidan Ibnul Hamdani Hamdani Hamid Nasrullah Hamid Nasrullah Hamid Nasrullah Hanapi Hasan Hansi Effendi Haris Abizar, Haris Harris Fedriansyah Hasan Maksum Hendra Dani Saputra Herlando Hernando, Fadli Huda, Asrul Ichsan Elfandy Ichsan Nasution Ichwan Yelfianhar Ikhwan, Aroma Ilham Ilham Ilham Putra Chaniago Ina Marlina Lubis Irma Yulia Basri Jerry Chih Tsong Su Jheri Hermanto Jodhi Ananda Prima Juri, Arfin Kholistiyawatin, Nur Koto, Rahmat Desman Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata Kristine Mae Paboreal Dunque kustanrika, irma wirantina Kutni Lasyatta Syaifullah Latifah, Ulfi M Giatman M. Giatman M. Nasir M. Sadly Firmansyah M. Yasep Setiawan M.Yasep Setiawan Mahdi, Arisul Marlina Marlina Marliyati Marliyati Marliyati Marliyati, Marliyati Martias Martias Martias Martias Martias Masykur Masykur Mayuliardi, Mayuliardi Meri Azmi Milana Milana Muhamad Arpan Muhammad Dava Lencana Muhammad Fikri Muhammad Latifur Rochman Muhammad Mukhbit Nurdin Muhammad Nasir Muhammad Ridwan Muhammad Shiddiq Muhammad Sofyan Muhammad Yanda Muhammad Yasep Setiawan Muhibbudin Muhibbudin Muji Setiyo Mukhlidi Musykir Mulani, Firoj Mulyanto Mulyanto Muslikhin Muslim Muslim Muslim Muslim Muslim Nanang Apriandi Nanda Farhan Mardhatillah Narti, Deswira Nenden Azka Zakhiha Nizwardi Jalinus Nizwardi Zalinus Nofiandri, Ernal Nofrial, Nofi Novia Hendra Nurhasan Syah Nurindah Dwiyani Nursaputro, Septiantar Tebe Nursyafti, Yolana Nuzul Hidayat, Nuzul Okin Johepan Handanu Okvianda, Wendika Ori Kurniawan Padrigalan, Kathleen Ebora Pahlevi, Reza Trio Pratama Saputra, Agung Prayuda, Agus Putra, Benny Adeka Putra, Rido Putra, Rizky Kurnia R. Chandra R. Chandra Rahmad Rahmad Rahmadani Rahmadani Rahmahtrisilvia Rahmahtrisilvia Rahmi, Salsabila Tri Rahul Fuaddi Ramadhan, Miftahuddin Ramadhani, Gustia Ramadhani, Witri Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Ridho Wahyudi Ridwan Rifdarmon Rifdarmon, Rifdarmon Rifdarmon, Rifdarmon Risha Febriyanti Rizky Ema Wulansari RR. Ella Evrita Hestiandari Rudi Sandra Arifin S.Pd, Zulfadli Sa'adah, Agis Amelia Saifudin Saifudin Saifudin Santosa, Tomi Apra Saputra, Riko Sari, Yetti Anita Setiawan, M.Yasep Setiawan, Yasep Shyu, Jin Cherng Siman, Siman Sofi, Abdullah Su, Jerry Chih Tsong Sugiarto, Toto Sugiarto, Toto Suharry Sujito Sujito Supriyo Supriyo SUYONO Syahril Syahril Syahrul Huda Syalsa Billa Ahmad Syalsa Billa Ahmad Toto Sugiarto Toto Sugiarto Toto Sugiarto Toto Sugiarto Toto Sugiarto Tung-Kwan Liu Ustafiano, Bintha Vanny Anreski Veby Yansyah, Wahyu Danang WAGINO Wagino Wahyu Sulistiyo Wahyuningtias, Asri Wakhinuddin Wakhinuddin S Wakhinuddin S Wakhinuddin Wakhinuddin Wakhinuddin Wakhinuddin, Wakhinuddin Wanda Afnison Warsono Putra Waruwu, Buala Jefriana Waskito Waskito Waskito Waskito, Waskito Weny Late Afriza Wulansari, Rizky Ema Yanda Septian Putra Yeka Hendriyani Yodi Agus Pratama Yoga Guntur Sampurno Yose Fenandes Yuliana Yuliana Yuliana Yuliana Yuliandi, Andri Yuniswar, Yuniswar Yusuf Dewantoro Herlambang Yusuf Dewantoro Herlambang Zakki Fuadi Emzain Zikri Fauzi Zikri Zikri ‘Ariqsyah, Muhammad