Influence of duration and fuel injection pressure on two stroke gasoline direct injection engine performance

• Published in: IOP conference series. Materials Science and Engineering Vol. 1098; no. 6; p. 62090
• Main Authors: Syaka, D R B, Margono, G, Tyasmadi, A T, Dewantoro, T
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.03.2021
• Subjects: Bars; Combustion chambers; Crankshafts; Fuel injection; Fuel systems; Gasoline engines; Infrared detectors; Pressure gages; Scavenging; Solenoid valves; Torque
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/1098/6/062090

Abstract The 2-stroke gasoline engines produce high air pollution because there is fuel wasted directly into the exhaust during the scavenging process. Solution to overcome the problem of pollution and improve engine performance is changing the fuel system into a direct injection fuel system. This study aims to determine the performance characteristics (power and torque) of two stroke gasoline direct injection engine in variations in injection duration and fuel pressure entering the combustion chamber with fixed injection timing 85° before TDC. The timing of fuel injection is carried out by a solenoid valve which is regulated using a disc board mounted on a crankshaft and detected by infrared sensors. Variations in the degree of duration of injection testing are 45°, 55° and 65°, in variations of fuel pressure of 6 bars, 7 bars and 8 bars The tools used for data collection are pressure gauge to measure fuel pressure and a tachometer is used to measure engine speed and engine torque measured by Prony brake. The results of this study indicate that increasing the duration and fuel pressure will increase power but do not directly affect the increase in torque, both because there is a certain duration and pressure which results in maximum performance.