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Journal : Journal of Mechanical Engineering

Circular Strategy Through Heat Treatment of Recycled Piston Rings for the Sustainability of the Automotive Economy Abdillah, Fuad; Fatra, Fahmi
Journal of Mechanical Engineering Vol. 2 No. 4 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i4.4938

Abstract

This study investigates the enhancement of mechanical performance in recycled piston rings through strategic heat treatment. The research focuses on optimizing heat treatment parameters—including austenitizing temperatures (800°C, 850°C, and 900°C), holding times (1, 2, and 3 hours), and cooling media (water, oil, and air)—to restore the hardness of used piston rings to levels comparable to new ones. Experimental methods were employed to evaluate the effects of these variables on material hardness. Results show that a holding time of three hours significantly improved hardness, with the highest achieved value reaching 38.66 HRC—nearly matching that of new piston rings (39.94 HRC). These findings demonstrate that properly controlled heat treatment can effectively rejuvenate recycled piston rings, offering a viable pathway to improve resource efficiency and reduce metal waste in the automotive industry
Analysis of the Impact of Controller Variation and Battery Efficiency on the Performance of Light Electric Vehicles Abdillah, Fuad
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5538

Abstract

Electric vehicles (EVs) have emerged as a sustainable transportation alternative to reduce fossil fuel dependence and carbon emissions. However, EV performance is strongly influenced by battery efficiency and control system configuration, particularly controller selection. This study analyzes how controller variation and battery efficiency affect the performance of the Viar EV1 1000W electric motor. An experimental approach compared Bosch and QS Motor controllers on a 1000W BLDC motor, with torque, power, speed, voltage, and battery efficiency systematically measured using a dynamometer and digital multimeter. Results demonstrate that the QS Motor controller significantly outperforms Bosch across all parameters delivering higher torque, power, speed, voltage stability, and battery efficiency. The study concludes that QS Motor controller implementation enhances performance and efficiency in light EVs such as the Viar EV1 1000W. This research contributes practical insights for the automotive industry on selecting optimal controllers to improve energy efficiency and system reliability in electric vehicles.
Co-Authors - Solechan Ach Roisul Mukarom Agus Setiaji Ahdiansyah, M. Hafidz Aldo Setiawan Alip Saputro Andi Priyanto Andi Setiyawan Aradhea, Adelia Adjeng Ariefuddin, Fahmy Bahtiar, Fahmy Zuhda Bajeng Nurul Widyaningrum Bayu Ariwibowo Bayu Ariwibowo, Bayu Bayu Gilang Purnomo Bayu Gilang Purnomo Benfanny Ahmad Muzaky Budiyanto Budiyanto Budiyanto Budiyanto Burhan, Nurul Dandy Farhan Dwi Hanggoro Defri Ekomoyo Dendy Priambodo Dhiran Joyo Didik Rohmad Dita Dian Putri Maharani Faizal Fakhri, Faizal Fatimatun, Siti Fatkhurrohman Fatkhurrohman Fatra, Fahmi Fatra, Fahmy Febiharsa, Dhega Feru Lima Feru Lima I. P Heni Puspitasari Herry Sulendro Mangiri Ika Wahyuningsih Imam Fahroni Indra Nur Cahyo Irawati, Risma Joko Suwignyo Joko Suwignyo Joko Suwignyo Joko Triyono Joyo, Dhiran Khoeron, Nur Kisyanti, Kisyanti Kristiyaningsih, Dewi Lestari Lingga Kurnia Ramadhani M. Laili Fuad Mahardika, Muhammad Rafi Mahmudi Zaki Mubarok Mangiri, Herry Sulendro Miftah Al Hafidz Moh Talipun Muchsin Sugiarto Muhammad Dhaniel Habibi Mustikawati, Diana Langgeng Nugroho, Agung Nuraedhi Apriyanto Nurrochim, Syahrunnesa Nurul Burhan Nurul Istiqomah Putra, Gigih Sukma Radimin - Radimin - Ratno Saktia Ririn Linawati Riskhi Wahyu Saputro Rochmawan, Muhammad Rizky Rohayati, Eti Rohman, Muhammad Solli Alai Rusana, Reni Palupi Ida Saeful Anam Sahrul Mustofa Saiful Ardi Saiful Bahri Samsudi Raharjo Samsuri, Dwi Sena Mahendra Sena Mahendra Sena Mahendra Sena Mahendra Slamet Misron Sri Suharni Sugondo - Sujamiyanto Sujamiyato Supriyadi Supriyadi Supriyono, Didik Suyitno Taufik Taufik Toni Setiawan Toni Setiawan Yugohindra Wanto