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All Journal Scientific Journal of Mechanical Engineering Kinematika
Danar S. Wijayanto
Universitas Sebelas Maret
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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POLA ALIRAN UDARA PADA TURBIN ANGIN SAVONIUS HELIKS DENGAN VARIASI JUMLAH SUDU MENGGUNAKAN METODE CFD Muhammad Harist Mishbahuddin; Taufik Wisnu Saputra; Danar S. Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.313

Abstract

The availability of fossil resources is decreasing, cause government and private sectors to race in developing renewable energy. One solution is to create Wind Power Plants to meet energy demands. The Savonius turbine, also known VAWT, this great potential to meet small-scale energy needs. Savonius turbines have lower performance compared to other types. This performance needs to be enhanced through design modifications, such as varying the number of blades. This research purpose is to analyze effect number of blades on performance of helical Savonius turbines. This research focuses on airflow patterns with varying blade numbers in helical Savonius turbines. These turbines numerically studied using Computational Fluid Dynamics (CFD) approach with ANSYS Fluent. Each variation of blade numbers will simulate at wind speeds between 1 to 5 m/s. Numerical testing results will provide visualizations in form contour and vector within pressure or velocity scope for each variation. Based on visualization of numerical testing results, found that number of blades affects flow patterns. Increasing the number of blades increases turbulence flow. Pressure on convex surface also increases with the addition of blades. These two airflow phenomena reduce turbine performance, so two blades produce most optimal performance due to minimal resistance they experience.
PENGARUH SUDUT PENGAPIAN DAN DURASI INJEKSI PENGGUNAAN ECU BERBASIS ARDUINO TERHADAP PERFORMA MOTOR 110CC FI Tabah Muhamad Khadri; Taufik W. Saputra; Danar S. Wijayanto
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 2 (2024): SJME Kinematika Desember 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i2.317

Abstract

The advancement of automotive technology in Indonesia has been rapid, particularly in motorcycle production, which reached 5,057,516 units in 2021 according to AISI data. Manufacturers now introduce models equipped with injection ignition systems using Electronic Control Units. These ECUs control actuators based on the inputs they receive. Arduino-based programmable ECUs are available to improve performance by adjusting ignition timing and fuel injection duration. This research aims to determine the impact of these adjustments on the torque, power, and fuel consumption of 110-cc FI motorcycle to find the best variations for optimal results. An experimental method was used, testing the Arduino-based programmable ECU against the standard ECU on 2014 Honda Vario 110-cc FI. Tests included variations in ignition timing of +20, +40, +60, +80, +100 degrees before TDC from the standard and fuel injection duration variations of +5%, +10%, and +15%. The highest torque was achieved with ignition timing variation of +40 degrees and injection duration of +5%, reaching 16.98 N.m. Maximum power was observed at +20 degrees timing and +10% injection, reaching 7.03 horsepower. Optimal fuel consumption was found at ignition timing of +20 degrees and injection duration of +5%, with rate of 4.15 ml/min, compared to the standard ECU.
Co-Authors Muhammad Harist Mishbahuddin Tabah Muhamad Khadri Taufik W. Saputra Taufik Wisnu Saputra