Study of the Effect of the Supercharger on the Output Power of Gasoline Injection Engine

Abstract

The study focuses on experimental research on the operation of a gasoline injection engine combined with an electric supercharger. In which, the effect of the supercharger on the output power of the engine was considered. 1NZ-FE gasoline injection engine with the supercharger was used for the experiment. In experimental operation, the engine speed got the value in the range of 1000 – 4500 (rpm), and the supercharger’s motor speed was 1000, 1500 and 2000 (rpm). The parameter of output power corresponding to operating modes of the engine was collected to analyze and evaluate the effect of the supercharger. The experimental results showed that when the engine operated with the support of the supercharger, the output power was significantly improved as compared to the engine without supercharger. The increase in the supercharger’s motor speed would increase the output power of the engine. At low engine speed of 1000 (rpm) the output power increased slightly by 5.1; 7.8 and 10.3% corresponding to supercharger’s motor speed of 1000, 1500 and 2000 (rpm). The highest increase of the output power occurs at the engine speed of 3000 (rpm). At this engine speed, the output power was improved by 7.9; 11.7 and 14.8% corresponding to super charger’s motor speed of 1000, 1500 and 2000 (rpm).