Investigation of Carburetor Venturi Bore Size in Internal Combustion Engines Using Ron 95 Fuel Mixed With Bioethanol

Abstract

The internal combustion engine is one of the main factors contributing to the largest exhaust emissions today. So that the engine produces optimal energy, the right fuel is needed to reduce exhaust emissions. Bioethanol is considered to optimize the combustion reaction in the form of CO and HC produced, but bioethanol contains less energy compared to gasoline. An experimental study was conducted directly on the performance and waste emissions of a four-stroke, 1-cylinder internal combustion engine. The purpose of this study was to analyze shell v-power RON 95 fuel blended with 15% bioethanol fuel with carburetor venturi hole size ratios of 26 and 28. With the addition of bioethanol, at venturi 26 and 28, the average torque increased by 20%, while the power at venturi 26 increased by an average of 13%, and at venturi 28, it increased by 7.8%. In terms of exhaust emissions, the use of venturi 26 decreased CO levels by 30.3% and HC levels by 36.6%, while the carburetor with venturi 28 decreased 18.4% and HC levels by 50.3%.