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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Teknik Mesin Indonesia
Aripin
Universitas Singaperbangsa Karawang
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis pengaruh tinggi bilah terhadap performa dengan airfoil NACA 0012 pada turbin angin sumbu vertikal tipe darrieus-H di Jawa Barat Raditya Elfa Pratama; Marno; Aripin
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.456

Abstract

The wind turbine that has the best performance for urban areas with easy maintenance is the Darrieus-H Vertical Axis Wind Turbine (TASV). The purpose of this study was to determine the characteristics of the NACA 0012 airfoil, to determine the effect of blade height on TASV performance, and to obtain the optimum blade design. The method used in this research is the simulation and analysis method. Wind turbine simulations and analysis were carried out using Microsoft Excel software to process data, Rotor DMS Simulation on Qblade to determine airfoil characteristics and analyze wind turbine performance, and Ansys FLUENT to determine fluid flow that occurs in the blades. In this study, with regional conditions in West Java having an average wind speed of 6.83 m/s and a maximum wind speed of 10 m/s, simulations and analysis with several variations in height obtained the results that the Darrieus Vertical Axis Wind Turbine (TASV) blade H has the same maximum Coefficient Power (Cp), which is 73% at a TSR of 4.5. In the study, also with a 300 W generator, the optimum blade height was obtained, which has a design of 0.7–1.1 meters with a power generated of 99.8–492 W with a torque of 1.72–5.80 Nm at a rotor rotational speed of 55.05–85 rad/s.
Analysis of the Effect of Changes in Ignition Timing to Improve Engine Performance on a 155cc Automatic Motorcycle Muhammad Fikri Aprilyansyah; Aripin; Deri Teguh Santoso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 10 No. 1 (2026): June 2026 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v10i1.16425

Abstract

This study aims to analyze the effect of using a Juken ECU with various settings on power, torque, fuel consumption, and specific fuel consumption on a motorcycle. Testing was conducted by comparing four conditions: the Standard ECU, the Juken ECU with standard settings, the Juken ECU with +2 settings, and the Juken ECU with -2 settings at speeds ranging from 30,000 to 70,000 mph.The test results showed that the highest power was achieved with the Juken ECU with -2 settings, with a maximum value of 10.07 hp at 70,000 mph. Meanwhile, the Juken ECU with -2 settings also achieved the highest torque of 9.19 Nm at the same speed. However, in terms of fuel efficiency, the Standard ECU demonstrated the lowest specific fuel consumption, indicating that this system is more efficient than the Juken ECU.Overall, it can be concluded that using the Juken ECU with -2 settings can improve engine performance in terms of power and torque, but at the same time, it also results in increased fuel consumption. The Standard ECU remains the most efficient choice for daily use that emphasizes fuel economy
Co-Authors Deri Teguh Santoso Marno Muhammad Fikri Aprilyansyah Raditya Elfa Pratama