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All Journal Jurnal Simetris Journal of Mechanical Engineering Education (Jurnal Pendidikan Teknik Mesin) VANOS Journal of Mechanical Engineering Education Pendas : Jurnah Ilmiah Pendidikan Dasar Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Engine: Energi, Manufaktur, dan Material Community Development Journal: Jurnal Pengabdian Masyarakat AEEJ : Journal of Automotive Engineering and Vocational Education Jurnal Pendidikan Vokasi Raflesia Jurnal Bisnis, Logistik dan Supply Chain Journal of Mechanical and Electrical Technology Jurnal Industri dan Teknologi Samawa (JITSA) Jurnal Insinyur Profesional Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Journal Industrial Engineering and Management (JUST-ME) Journal of Artificial Intelligence and Digital Business Journal of Mechanical and Manufacture Indonesian Journal of Multidisciplinary on Social and Technology JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI (JISI) Rekayasa Sistem Energi dan Manufaktur Indonesian Journal of Innovation Multidisipliner Research Dedicated: Journal of Community Services (Pengabdian kepada Masyarakat) Jurnal Kendali Teknik dan Sains Jurnal Teknik Elektro dan Komputasi (ELKOM)
Tatang Permana, Tatang
Universitas Pendidikan Indonesia
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Analisis Efisiensi Konversi Daya dari Baterai ke Inverter pada Shuttle Bus Listrik Kapasitas 14 Penumpang Andhiya M.R Adriansyah; Sriyono Sriyono; Tatang Permana
Indonesian Journal of Innovation Multidisipliner Research Vol. 4 No. 3 (2026): Juli - September
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v4i3.1214

Abstract

Transisi menuju penggunaan kendaraan listrik mendorong perlunya evaluasi performa powertrain secara empiris, terutama pada fasilitas angkutan massal seperti shuttle bus. Penelitian ini bertujuan untuk mengevaluasi efisiensi konversi daya kelistrikan dari baterai menuju inverter pada purwarupa bus listrik berkapasitas 14 penumpang di bawah variasi beban dinamis dan kecepatan. Pengujian dilakukan di atas mesin chassis dynamometer menggunakan desain faktorial, yang melibatkan variasi kecepatan konstan (20, 30, dan 40 km/jam) serta simulasi pembebanan menggunakan pasir (0, 7, dan 14 penumpang dengan asumsi 65 kg per orang). Parameter kelistrikan diakuisisi secara real-time menggunakan instrumen power analyzer presisi tinggi. Hasil ekstraksi data metrologi dari 27 kali pengulangan eksperimen menunjukkan bahwa konsumsi daya baterai tertinggi mencapai 6206.0 Watt ketika kendaraan dipacu pada kecepatan 40 km/jam dengan kapasitas beban penuh. Namun, perhitungan rasio daya mengungkap adanya anomali efisiensi metrologi yang tajam. Pada rentang kecepatan 20 dan 30 km/jam, efisiensi pembacaan tertahan pada angka 24 hingga 25 persen, dan baru mengalami peningkatan ke rentang 33 hingga 35 persen pada kecepatan 40 km/jam. Mengingat tidak terjadinya disipasi panas yang merusak pada komponen, susut daya ekstrem ini dikonfirmasi murni sebagai rugi-rugi semu akibat kegagalan instrumen dalam mendeteksi titik potong nol pada sinyal berfrekuensi tinggi. Disimpulkan bahwa pengukuran daya kendaraan listrik sangat rentan terhadap distorsi frekuensi inverter, sehingga aktivasi filter sinkronisasi pada instrumen metrologi menjadi prosedur yang sangat krusial.
Air–Fuel Ratio Evaluation in Open-Loop ECU Mapping for a KZR Engine: A Trade-Off Analysis of Power, Torque, and Fuel-Efficiency Potential Muhammad Ilham Ramadhan; Tatang Permana
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 7 No 1 (2026): Vol 7 No 1 (2026) : AEEJ : Journal of Automotive Engineering and Vocational Educa
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v7i1.318

Abstract

An open-loop ECU operates without oxygen-sensor feedback, making Air–Fuel Ratio (AFR) control dependent on the preset fuel map. This study evaluated how three AFR settings in open-loop ECU mapping relate to the performance characteristics of a Honda KZR engine. A dynamometer-based experiment was conducted on a Honda Vario 125 KZR engine using Pertalite RON 90 and AFR targets of 11.7, 13.1, and 14.1. The evaluated parameters were engine power, torque response, and fuel-efficiency potential inferred from AFR characteristics. The results showed that AFR 13.1 produced the highest reported power output of 11.0 HP, whereas AFR 14.1 indicated a more favourable fuel-efficiency potential. AFR 11.7 represented an over-rich setting with the least favourable efficiency tendency. These findings indicate a trade-off between performance-oriented and economy-oriented AFR settings in open-loop ECU mapping.
Analisis Karakteristik Aerodinamika Ferrari F2004 pada Variasi Kecepatan Aliran Udara Menggunakan Computational Fluid Dynamics Eka Muhammad Dzikra; Yusep Sukrawan; Tatang Permana; Muhamad Maris Al Gifari; Ridwan Adam Muhamad Noor
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.477

Abstract

This study analyzes the aerodynamic characteristics of the Ferrari F2004 at different airflow speeds using Computational Fluid Dynamics (CFD). Autodesk CFD simulations were conducted at 150 km/h and 350 km/h to analyze pressure distribution, velocity, streamlines, drag, downforce, and aerodynamic coefficients. The results show that increasing airflow speed intensifies pressure and velocity variations and wake formation. Drag increased from 422.012 N to 2,295.60 N, while downforce increased from 151.026 N to 818.567 N. Meanwhile, the drag coefficient remained relatively stable, from 0.3053 to 0.3050, and the lift coefficient changed from −0.1093 to −0.1088. Increasing airflow speed primarily increases the aerodynamic loads on the vehicle.
Analisis Perbandingan Modifikasi Air Cap Spray Gun F3 terhadap Lebar Pola Semprotan dan Kualitas Permukaan Hasil Pengecatan Otomotif Nandang Raihan; Yusep Sukrawan; Tatang Permana; Ridwan Adam Muhamad Noor
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.481

Abstract

This study compared spray pattern width and painted surface quality between an original F3 spray gun and a modified F3 spray gun at narrow, medium, and wide settings. We used a quantitative experimental method with a posttest-only control group design. We tested each spray gun and pattern-setting combination in three independent replications, resulting in 18 specimens. Spray pattern width was measured at a distance of 15 cm with the air cap in a horizontal position, while surface quality was assessed by two observers using an ordinal 1–5 scale. Inter-rater reliability was analyzed using weighted Cohen’s Kappa. The modified F3 produced average pattern widths of 100.00 mm, 161.67 mm, and 199.00 mm, compared with 91.67 mm, 156.67 mm, and 189.33 mm for the original F3. The increases were 9.09%, 3.19%, and 5.11%, respectively. The modified F3 also received higher surface-quality scores. Kappa values of 0.57, 0.50, and 0.33 indicated moderate to fair agreement.
Analisis Pengaruh Bentuk dan Diameter Comb terhadap Karakteristik Aliran Miniatur Wind Tunnel Menggunakan Computational Fluid Dynamics Fajrin Gimnastiar; Yusep Sukrawan; Tatang Permana; Muhamad Maris Al Gifari; Ridwan Adam Muhamad Noor
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.482

Abstract

This study aimed to determine the comb configuration that provides the most uniform flow distribution with low turbulence and pressure loss. Four comb configurations, namely circular, square, 3 mm-diameter hexagonal, and 6 mm-diameter hexagonal configurations, were analyzed using Autodesk Computational Fluid Dynamics under steady-state conditions with an inlet velocity of 30 m/s. We evaluated flow characteristics based on mean velocity, velocity standard deviation, coefficient of variation, uniformity index, turbulence intensity, and pressure drop. With a test-section hydraulic diameter of 89 mm, the Reynolds number of the main flow was calculated as 1.81 × 10⁵. The results showed that the 6 mm-diameter hexagonal comb performed best, with a mean velocity of 29.982 m/s, a velocity standard deviation of 0.517 m/s, a coefficient of variation of 1.725%, a uniformity index of 99.281%, a turbulence intensity of 0.608%, and a pressure drop of 0.592 kPa. This configuration produced the most uniform velocity distribution, low velocity fluctuation and turbulence intensity, and low pressure loss. Therefore, the 6 mm-diameter hexagonal comb was selected as the best configuration.
Analisis Nozzle dan Diffuser terhadap Distribusi Aliran pada Open Circuit Wind Tunnel menggunakan Simulasi Computational Fluid Dynamic (CFD) Sahrul Barokah; Yusep Sukrawan; Tatang Permana; Muhamad Maris Al Gifari; Ridwan Adam Muhamad Noor
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.487

Abstract

This study analyzes the effect of the nozzle and diffuser on airflow distribution in an open-circuit wind tunnel using Computational Fluid Dynamics simulation. The model was created in Autodesk Inventor and simulated in Autodesk CFD at an airflow velocity of 6 m/s, under steady-state conditions, using the k-ε turbulence model. The simulation stages included model development, meshing, boundary condition setup, and post-processing. The simulation results show that the maximum velocity at the nozzle reached 5.3 m/s, increased to 21,08 m/s at the test section, then decreased to 19,17 m/s at the diffuser, with static pressure gradually increasing from 101.150 Pa at the nozzle to 101.297 Pa at the diffuser, indicating a pressure recovery process consistent with the diffuser function. This study's novelty lies in the stepwise quantitative analysis of velocity and pressure distributions at each segment of a laboratory-scale open-circuit wind tunnel using Autodesk CFD simulation, supported by a mesh-independence test, which has not been widely reported in similar previous studies.
Pengaruh Optimasi Air Fuel Ratio melalui ECU Juken 5 terhadap Daya dan Torsi Mesin Yamaha Aerox 155 Muhammad Fahrizal Faisol; Yusep Sukrawan; Tatang Permana; Ridwan Adam Muhamad Noor
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 2 (2026): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i2.484

Abstract

This study aimed to analyze the effect of Air Fuel Ratio (AFR) variations obtained through tuning of a Juken 5 programmable ECU on the performance of a Yamaha Aerox 155 engine. The study used an experimental method with a chassis dynamometer, comparing the initial run condition with the tuned condition at a target AFR of 12.8:1. Testing was conducted under Wide Open Throttle (WOT) conditions using Pertamax RON 92 fuel, with maximum power and torque as the main performance parameters. The results showed that the initial condition with an AFR of 10–11 produced a maximum power of 20.07 HP and torque of 10.33 ft-lbs. After final tuning at an AFR of 12.8, maximum power increased to 22.54 HP at 10,260 rpm, representing a 12.3% increase, while maximum torque increased to 11.59 ft-lbs at 10,200 rpm, representing a 12.2% increase. These results indicate that stabilizing the AFR at 12.8:1 was associated with improved engine performance at high engine speeds. However, the relationship was not statistically tested, so the observed improvements cannot be considered statistically significant.
ANALISIS STRUKTUR SISTEM LIFTING MEDIA SIMULATOR ROUGH TERRAIN CRANE MENGGUNAKAN METODE ELEMEN HINGGA Muhammad Nouval Ramadhan; Sriyono; Tatang Permana; Yusep Sukrawan
Rekayasa Sistem Energi dan Manufaktur (ReSEM) Vol 4 No 2 (2026): Journal Rekayasa Sistem Energi dan Manufaktur
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/resem.v4i2.31977

Abstract

The lifting system is a major component of a rough terrain crane that functions to lift and move loads therefore, it requires a structure capable of safely withstanding applied loads. This study aimed to analyze Von Mises stress, displacement, and safety factor, as well as to determine the lifting capacity limit of a rough terrain crane simulator lifting system made of Acrylonitrile Butadiene Styrene (ABS). The research employed the Finite Element Analysis (FEA) method using Autodesk Fusion 360 with load variations of 4.90 N, 9.81 N, and 19.61 N. The simulation results showed that increasing loads caused the maximum Von Mises stress to increase from 44.348 MPa to 177.484 MPa and the maximum displacement to increase from 36.489 mm to 146.030 mm. The minimum safety factor decreased from 0.451 to 0.113. The highest stress concentration for all loading variations occurred at the base joint area of the lifting system. The results indicated that the ABS structure did not meet the safety criteria because all loading variations produced safety factor values below 1 and working stresses exceeding the material yield strength of 20 MPa. Structural geometry optimization or the use of higher-strength materials is required to improve the lifting system’s capacity and safety.
A ANALISIS KEKUATAN STRUKTUR MINIATUR FORKLIFT HIDROLIK MENGGUNAKAN METODE FINITE ELEMENT ANALYSIS (FEA): Analisis Struktur Miniatur Forklift Hidrolik Berbasis Finite Element Analysis Ricky Aprilianto; Sriyono; Tatang Permana; Yusep sukrawan
Rekayasa Sistem Energi dan Manufaktur (ReSEM) Vol 4 No 2 (2026): Journal Rekayasa Sistem Energi dan Manufaktur
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/resem.v4i2.32294

Abstract

A miniature hydraulic forklift is a tool that can be used as a learning medium, simulation, or prototype for a goods lifting system. Structural strength is an important aspect that determines the safety level of a miniature hydraulic forklift during loading. This study aims to analyze the structural strength of a miniature hydraulic forklift using the Finite Element Analysis (FEA) method based on Von Mises stress, displacement, and safety factor parameters. The study was conducted by creating a three-dimensional model of a miniature hydraulic forklift using Autodesk Fusion 360, then conducting static simulations with loading variations of 9.81 N, 19.6 N, and 29.4 N. The simulation results show that a 9.81 N load produces a maximum Von Mises stress of 19.154 MPa, a maximum displacement of 24.780 mm, and a safety factor of 1.044. A 19.6 N load produces a maximum Von Mises stress of 38.308 MPa, a maximum displacement of 49.561 mm, and a safety factor of 0.522. The 29.4 N load produces a maximum Von Mises stress of 57.461 MPa, a maximum displacement of 74.341 mm, and a safety factor of 0.348. The highest stress distribution occurs in the connection area between the fork and the fork seat which is a critical part of the structure. The results of the study indicate that increasing the load causes an increase in the Von Mises stress and displacement values ​​and a decrease in the safety factor value. The miniature hydraulic forklift structure is still safe to use at a load of 9.81 N because it has a safety factor value greater than one, while loads of 19.6 N and 29.4 N indicate unsafe conditions. The results of this study can be the basis for developing a miniature hydraulic forklift design that has a better lifting capacity and safety level.
Analisis Daya Pada Engine Tipe K0J Dengan Sistem Pengapian Model Fully Transistorized Luthfi Shidqi; Andika Luqmanul Hakim; Tatang Permana
Indonesian Journal of Multidisciplinary on Social and Technology Vol. 4 No. 3 (2026): Juli - Oktober
Publisher : PT Ilmu Data Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijmst.v4i3.13652

Abstract

Sistem pengapian memiliki peranan penting dalam menentukan kualitas pembakaran yang berdampak langsung terhadap performa dan daya engine sepeda motor. Penelitian ini bertujuan untuk menganalisis karakteristik daya engine tipe K0J yang menggunakan sistem pengapian model fully transistorized pada sepeda motor Honda Genio. Penelitian dilakukan menggunakan metode eksperimen dengan bantuan chassis dynamometer BRT Super Dyno 50LA pada suhu kerja engine sekitar 80°C. Pengujian menggunakan metode wide open throttle (WOT) pada rentang putaran 5000 hingga 8000 rpm dan dilakukan sebanyak lima kali pengulangan. Dua pengujian pertama dilakukan sebelum kendaraan mendapatkan perawatan, sedangkan tiga pengujian berikutnya dilakukan setelah servis CVT dan pembersihan throttle body. Hasil pengujian menunjukkan bahwa daya engine meningkat secara bertahap mulai dari 5000 rpm dan mencapai nilai maksimum pada putaran 7500 rpm sebesar 8,43 HP atau 6,29 kW, kemudian mengalami penurunan pada putaran 8000 rpm. Daya yang diperoleh setelah perawatan secara umum lebih tinggi dibandingkan sebelum perawatan, yang mengindikasikan bahwa kondisi CVT dan kebersihan throttle body turut memengaruhi performa yang terukur pada dynamometer. Nilai daya maksimum sebesar 6,29 kW sedikit lebih rendah dibandingkan spesifikasi pabrikan sebesar 6,6 kW. Perbedaan tersebut diperkirakan dipengaruhi oleh kondisi dan riwayat penggunaan kendaraan serta adanya rugi-rugi mekanis pada sistem transmisi selama proses pengujian. Temuan ini menunjukkan bahwa perawatan yang tepat dapat mendukung performa engine yang lebih optimal.
Co-Authors A.A. Ketut Agung Cahyawan W Aam Hamdani, Aam Afroh Fauziah Agil N. Maulida, Agil N. Airlangga Putra Alimin, Fanny Noviany Alimudin, Imam A. Aliyah, Dewi Amay Suherman Amelia Ghania Anastasya Ratu Vanesa Andhiya M.R Adriansyah Andika Luqmanul Hakim Arifah, Nissa Nurul Asep H. Sasmita, Asep H. Asep M. Arifin, Asep M. Ayuningtias, ulfa Febryani Baskara, Aditya Budi Kurniawan Dahtiar, Dadan Dede Suhayat, Dede Dedi Supriawan, Dedi Dewi Nursari Dimas Rahmat Dinulloh, Fabela Dwi Novi Wulansari Eka A. Saefudin, Eka A. Eka Daryanto Eka Daryanto, Eka Eka Muhammad Dzikra Enda Permana, Enda Faisal Rahman, Faisal Faiz Arkan Yulianto Faizal, Henro N.M. Fajrin Gimnastiar Febriyani, Githa Fitri Firdaus, Faisal R. Gifari, Muhammad Maris Al Gilang Ciptadi Mahatkarsa Hambali, Muhammad W. Handayani, Sri Hanissa Okitasari Hasim Bisri, Hasim Hutajulu, Olnes Yosefa Ibnu Mubarak Imam Saputra Inu H Kusumah, Inu H Inu H. Kusumah, Inu H. Inu Hardi Kusumah, Inu Hardi Irma Dwi Saputri Ismiyanto, Oka Iwa Kuntadi Iwan, Dartiwan iwan Iyep Sutia Jaenudin, Asep Y. Jihad, Badru Karimah, Nadila Rifatul Khoeron, Ibnu R. Komaro, Muumu Kurniawan, Ichsan Larutama, Wiku Lindung Valya Kinanti Luthfi Shidqi Marcelinus Sebastian Kurniawan Maun Sugiarto, Maun Mubarok, Ibnu Muhamad Maris Al Gifari Muhamad Syahrul Muhammad Darrul Salim Istara Muhammad Fahrizal Faisol Muhammad Ilham Ramadhan Muhammad Maris Al Gifari Muhammad Noor, Ridwan Adam Muhammad Nouval Ramadhan Muhammad Setya Rifki Raharja Mujahidin, Zaki Ahmad Mumu Komaro Mutholib, Huda H. Nadila Rifatul Karimah Nandang Raihan Noor, R A M Noor, Ridwan A. M. Nugroho, Wisnu Y Nur Arifin, Muhammad Zaki Nurmuminah, Ina Nursalam, Muhamad Olnes Y. Hutajulu Ono Wiharna, Ono Parid, Hilman Permana, Ramdan A. Permana, Taufan R. S. Pratama, Sultan Muhammad Adi Puradimaja, Herdy Rafly Pratama Rahma Yunia Adini Ramdhani RAMDHANI RAMDHANI Ramdhani Ramdhani Ramdhani, Fahmy Febi Ricky Aprilianto Rifal Maulana Rika Andriani Riyanti Riyanti Romansyah Romansyah, Romansyah Rustandi Rustandi, Rustandi Sabriyadi Sabriyadi, Sabriyadi Saepulloh, Asep R. Sagala, Robert Sahrul Barokah Santoso, Yana B. Saputra, Yan Saputri, Irma Dwi Sekar A. Ningtyas, Sekar A. Shafalah, Fikry Sidiq, Hanif A Sriyono Sriyono Sriyono Sriyono, S Sugeng Riyadi Sukandar, Aan Sukrawan, Yusep Sulaeman Sulaeman Sulaeman, Annisa Nur Fadillah Supriatna , Acep Supriatna, Acep Susanty Susanty, Susanty Suseno, Florensius P. Sutia, Iyep Sutrisno, Yohanes T.A. Syamsi, Ajie N. Taufikurachman, Indra E. Taufiq, Wildan F. Virgianto, Gunawan Wahid Munawar Warta, Waska Widyaningsih, Indri Wiku Larutama Wiranegara, Mohammad Rizky Wowo S. Kuswana, Wowo S. Yadi Supriyadi Yayu Rahayu, Yayu Yundari, Yundari Zahra, Nurbaiti Zikri, Syirojuddin