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Journal : Venus: Jurnal Publikasi Rumpun Ilmu Teknik

Pengaruh Tekanan dan Jenis Bahan Bakar Terhadap Konsumsi Bahan Bakar Spesifik Muhamad Fatikhun Nada; Santoso Santoso
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 4 (2024): Agustus : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i4.409

Abstract

The three main factors determining combustion efficiency in Otto engines are optimal compression pressure, effective ignition, and fuel quality. In this study, two critical variables—fuel pump pressure (38, 43, and 48 Psi) and fuel type (RON 90 and RON 92)—were analyzed to understand their impact on specific fuel consumption (SFC). An experimental research method was employed to test the effect of independent variables on dependent variables under controlled conditions. The results indicate that a fuel pump pressure of 43 Psi provides the most stable and efficient fuel consumption performance for both fuel types across the entire engine speed range. A fuel pump pressure of 38 Psi is optimal at medium engine speeds but less efficient at high speeds, whereas a pressure of 48 Psi is most efficient at low to medium speeds but decreases in efficiency at high speeds. Overall, RON 92 fuel shows an efficiency improvement over RON 90, particularly at medium to high engine speeds. The combination of a fuel pump pressure of 43 Psi and the use of RON 92 fuel is recommended to achieve optimal specific fuel consumption, as it provides consistent efficiency across various engine operating conditions.
Pengaruh Kapasitansi Plasma Kapasitor dan Putaran Mesin Terhadap Konsumsi Bahan Bakar Mesin 125 CC Akhlis Nur Firman Ardiansyah Santoso; Santoso Santoso
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 4 (2024): Agustus : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i4.421

Abstract

The ignition system is an important system in a vehicle. Currently, the level of emissions produced by vehicles continues to increase every year. This can be caused by high fuel consumption values. The solution to this is to improve the quality of the spark plug by adding a capacitor to the ignition/ignition capacitor. The way the Plasma Capacitor Igniton works is by adding a high voltage non-polar capacitor which is connected in parallel to the output coil. The experimental method will be carried out using quantitative methods. By installing ignition plasma capacitors with different capacitor sizes of 1.5 mF (STD), 440 pF, 660 pF installed in parallel with the spark plug wires with variations in engine speed running from 1500 – 5500 rpm to check emissions. To check the fuel consumption value for Rpm 4500 - 9500 which has been adjusted previously. Fuel Consumption Test Results The use of 440 pF capacitors generally provides an increase in SFC efficiency at most engine speeds, with the largest percentage reduction at RPM 5500 (22.64%). The use of 660 pF capacitors shows varying results. At some RPMs, such as 5500, the SFC actually increases (3.77%), while at other RPMs such as 6500, it shows a significant decrease (27.66%).