EFFECT OF ETHANOL RATIO ON PERFORMANCE AND EMISSION OF SINGLE-CYLINDER GASOLINE ENGINES IN CIRCULATION

Abstract

This paper presents a study on the effect of ethanol ratio on performance and emission of 1-cylinder gasoline engine. The research engine is a motorcycle engine using a carburetor. The test fuel consisted of regular gasoline RON92 and a mixture of RON92 and ethanol with ethanol volume fractions of 10%, 15% and 20% respectively for E10, E15 and E20. The test was conducted on a test bench in gears 3 and 4 respectively with the speed range 20÷40 (km/h)  and 30÷70 (km/h), these are the two most commonly used speed ranges of the vehicle. motorcycle. The results show that, compared with when using RON92, when using ethanol, the capacity increases but trends to decrease when the percentage of ethanol in the mixture increases, the fuel consumption rate has the opposite movement with the capacity. CO and HC emissions trend to decrease while CO₂ and NOx tend to increase with increasing ethanol blending ratio.