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Impact of Injection Duration and Injection Timing Variations on Torque and Power Output of the Ken Arok Urban Car Utilizing E100 Ethanol Nike Nur Farida; Muhammad Rafi Akbar Yudhistira; Nicko Nur Rakhmaddian
Jurnal Teknik Mesin (Sinta 3) Vol. 21 No. 2 (2024): OCTOBER 2024 (SINTA 3)
Publisher : Institute of Research and Community Outreach, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jtm.21.2.43-50

Abstract

State Polytechnic of Malang (Polinema) actively participated in the energy-efficient car competition. The Polinema team has developed an energy-efficient car called Ken Arok, which competes in the urban ethanol class (Internal Combustion Engine) concept. This class emphasizes using internal combustion engines as the driving force and ethanol as the fuel. Ken Arok won fifth place in the competition due to obstacles in the programmed ECU program, especially in the injection duration. This study examines the effect of the interaction between injection duration and injection time variations on the torque and power output of the Ken Arok urban car fueled by E100 ethanol. An experimental approach was used in this study. A modified motor, converted into an energy-efficient urban car, was tested. The injection duration mapping was varied in multiples of 2 ms, with values ​​ranging from 2 ms less than the standard to 2 ms more than the standard. Likewise, the injection time was varied in multiples of 2 degrees, including 2 degrees less than the standard and 2 degrees more than the standard. The dyno tester measured the torque and power generated under these conditions. The main objective of this study was to identify the optimal torque and power settings for the Ken Arok energy-efficient engine. The highest torque value recorded was 10.13 N.m, achieved at 6000 rpm when using an injection duration of 2 ms more than the standard (9.06 ms) and an injection timing advanced by 2 degrees (3580). The peak power output reached 8.7 HP at 6000 rpm under compression injection duration plus 2 ms (9.06 ms), and when the injection was advanced by 20 (3580).
ANALISIS KINERJA POROS RODA SEPEDA MOTOR MELALUI PENDEKATAN FINITE ELEMENT METHOD DENGAN DUKUNGAN SOFTWARE SOLIDWORKS Agus dwi Putra; Galuh Zuhria Kautzar; Nicko Nur Rakhmaddian; Faradilla Fauziyah Risnawati
Jurnal Pendidikan Teknik Mesin Vol. 12 No. 1 (2025): Jurnal Pendidikan Teknik Mesin
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v12i1.56

Abstract

The motorcycle wheel shaft is a vital component that significantly impacts vehicle performance and rider safety. This study is motivated by the need to ensure an optimal wheel shaft design, considering its critical role in transmitting power, bearing loads, and maintaining the motorcycle's stability. The approach used in this research employs the Finite Element Method (FEM) through SolidWorks software to evaluate Von Mises stress, strain, and the factor of safety, with carbon steel a material known for its strength and corrosion resistance as the primary material. The analysis results reveal a maximum stress of 2.827x108 N/m², a maximum Displacement of 4.252x10-3 mm, and a minimum factor of safety of 5.111x102, indicating a reliable design. The study identifies critical areas prone to failure. Using a simulation-based approach, this research underscores the importance of FEM analysis in the development of safe and efficient mechanical components, contributing to enhanced performance and safety of vehicles.