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All Journal Journal of Artificial Intelligence and Digital Business Cylinder : Jurnal Ilmiah Teknik Mesin
Setiawan, Yosua
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Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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 1 
Production and Performance Test of Biodiesel Produced from Waste Cooking Oil Setiawan, Yosua; Sutanto, Hadi; Leman, Abdul Mutalib
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 1 (2024): APRIL 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i1.5472

Abstract

Biodiesel has become an important source as a subtitution fuel for diesel engines. As an alternative fuel for diesel engines, it is becoming increasingly important due to diminishing fossil fuel reserves and the environment consequeness of exhaust gases from petroleum fuelled engines therefore, it needs to be further investigated how biodiesel blend percentage could affect the performance and emission of diesel engine. Waste cooking oil (WCO) is one of the raw material for Biodiesel. WCO that has been converted into biodiesel is made using esterification and transesterification methods. Then, biodiesel is mixed until it has the composition of B20, B30 and B50. The mixture is then tested for performance and emissions. In testing, B30 did not have a significant decrease in performance but the emission test results (opacity) were higher than B20. B50 has a significant decrease in performance when compared to B20, but has the lowest opacity test results.
Integration of Electric Drive Systems in ICE to EV Conversion: A GT-Suite Approach Setiawan, Yosua; Farid, Mohd
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 2 (2024): OKTOBER 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i2.6008

Abstract

This study was focus on converting internal combustion engine (ICE) vehicles to electric vehicles (EVs) using GT-Suite simulations, focusing on the integration of electric drive system. With increasing global CO2 emissions, many nations aim to achieve carbon neutrality, making the shift to electrification crucial. While new battery electric vehicles (BEVs) produce significantly lower greenhouse gas (GHG) emissions, the high costs associated with new EV production remain a barrier to widespread adoption. Thus, converting existing ICE vehicles into EVs emerges as a more cost-effective and environmentally beneficial strategy. Using Toyota Avanza as a base model, replacing the ICE with a Synchronous AC motor and a LiFePO4 battery pack. Simulation results indicate competitive performance, with a 0-100 km/h acceleration time of 14 seconds, a top speed of 190 km/h, and an estimated driving range of 310 km. This study demonstrates that ICE-to-EV conversions can accelerate the transition to sustainable transportation.
Integrasi Transmisi Otomatis Untuk Kendaraan Listrik yang Dikonversi: Pendekatan GT-Suite Setiawan, Yosua; Said, Mohd Farid bin Muhamad
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 11 No 1 (2025): April 2025
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v11i1.6661

Abstract

The growing adoption of electric vehicles (EVs) in Southeast Asia, particularly in Indonesia and Malaysia, is driven by policy incentives such as road tax exemptions and relaxed traffic restrictions. This study investigates the feasibility and performance impact of integrating a stock automatic transmission into a converted internal combustion engine (ICE) vehicle, replacing the commonly used single gear or manual transmissions in typical EV conversions. Using GT-Suite simulation software, a detailed model of a converted Toyota Avanza was developed to evaluate key performance metrics including acceleration, top speed, driving range, and energy consumption. Simulation results indicate that integrating an automatic transmission improves acceleration performance, reducing the 0–100 km/h time by 0.7 seconds compared to a single-gear configuration. Although the top speed is mechanically limited by the transmission's maximum input speed, the vehicle achieved a marginally higher top speed (191.3 km/h) and reached it 1.8 seconds faster. During range simulations under the New European Driving Cycle (NEDC) and constant highway driving at 100 km/h, the automatic transmission variant demonstrated a longer driving range—up to 7% farther—while also improving energy consumption from 8.55 km/kWh to 8.77 km/kWh.
Perilaku Termal Baterai Kendaraan Listrik pada Siklus Mengemudi NEDC dan WLTP: Studi Simulasi Menggunakan GT-Suite Said, Mohd Farid bin Muhamad; Sutjiadi, Adrian; Setiawan, Yosua
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 11 No 1 (2025): April 2025
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v11i1.6678

Abstract

This study examines the thermal behaviour of a LiFePO₄ battery pack in a converted electric vehicle using GT-Suite simulation. The base vehicle, a Toyota Avanza originally powered by a 1.3-litre engine, was retrofitted with a 60 kW synchronous AC motor and a 268.8 V, 40.32 kWh battery pack. Simulations were conducted under NEDC and WLTP driving cycles, both with and without passive cooling. Results showed that battery temperature peaked at 45.3°C (NEDC) and 71.6°C (WLTP) without cooling, and was reduced to 36.6°C and 48.0°C respectively with passive cooling. Temperature spikes coincided with rapid acceleration and high-speed phases, highlighting the influence of discharge current on battery heating. These findings demonstrate the importance of thermal management in EV conversions and the effectiveness of passive cooling. Future work will focus on experimental validation and discharge current control via a battery management system (BMS) to ensure battery safety and longevity.
Infill Density Effects on Impact Strength of PLA+ Sutjiadi, Adrian; Setiawan, Yosua
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 11 No 2 (2025): Oktober 2025
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v11i2.7036

Abstract

3D printing is an additive manufacturing method. In its process, several parameters can be adjusted to achieve the desired printing results. This study examines the effect of infill percentage on the Charpy impact strength of PLA+ materials made using the fused deposition modeling (FDM) method. The specimens used follow the ISO 179-1 type 1 standard without notches and are made with infill variations of 20%, 40%, 60%, 80%, and 100%. Each variation is tested five times using a JB-S300 Charpy impact tester. The absorbed energy is then calculated into the Charpy impact strength (kJ/m²) according to the ISO 179-1 standard. The results show that the impact strength increases with increasing infill, from 10.9 kJ/m² at 20% infill to 30.4 kJ/m² at 100% infill. These results emphasize the effect of infill on energy absorption and the importance of parameter control to improve the consistency of results in FDM printed PLA+ components.
Redesain Fasilitas Produksi Proses Di Mesin Sentrik Untuk Meningkatkan Produktivitas Di UD KaryaJaya Setiawan, Yosua; Murnawan, Hery
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 4 (2026): November - January
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i4.4065

Abstract

UD. Karya Jaya merupakan sebuah perusahaan manufaktur yang berlokasi di Sidoarjo dan bergerak dalam produksi berbagai komponen atau spare part kendaraan bermotor, khususnya kunci busi dan sarangan knalpot. Dalam proses produksinya, perusahaan bergantung pada kinerja mesin sentrik sebagai salah satu mesin utama dalam alur pembuatan komponen. Untuk memperoleh gambaran nyata mengenai kondisi kerja dan proses produksi, penelitian ini dilakukan melalui observasi lapangan secara langsung. Peneliti mengumpulkan berbagai data penting, seperti waktu proses pada setiap tahapan produksi, waktu kerja operator, serta data antropometri pekerja yang digunakan sebagai dasar perancangan fasilitas kerja yang ergonomis. Hasil observasi menunjukkan adanya permasalahan yang signifikan pada area mesin sentrik. Permasalahan utama terletak pada penataan material yang kurang ergonomis, di mana bahan baku dan hasil proses masih ditempatkan di lantai. Penataan yang tidak sesuai prinsip ergonomi ini menyebabkan operator harus melakukan aktivitas membungkuk berulang kali untuk mengambil material, sehingga menambah waktu kerja, meningkatkan kelelahan fisik, serta memperlambat aliran material dalam proses produksi.Oleh karena itu, penelitian ini bertujuan untuk meningkatkan produktivitas melalui redesain fasilitas kerja pada mesin sentrik. Fokus utama dari redesain ini adalah memperbaiki tata letak material, memperlancar aliran kerja, mengurangi gerakan tidak perlu, serta meminimalkan total waktu proses. Dengan adanya perbaikan tersebut, diharapkan output produksi meningkat dan beban kerja operator dapat dikurangi sehingga proses produksi menjadi lebih efektif dan efisien.
Co-Authors Farid, Mohd Hadi Sutanto Hery Murnawan, Hery Leman, Abdul Mutalib Said, Mohd Farid bin Muhamad Sutjiadi, Adrian