The Impacts of Ethanol - Gasoline Blended Fuels on the Pollutant Emissions and Performance of a Spark -Ignition Engine: An Empirical Study

The blending of ethanol with imported gasoline types has been compulsory since January 1, 2018, with the Communiqué No. 30098 published in the Official Gazette in Turkey. In line with this, it is aimed to determine the effects of gasoline-ethanol blends on engine performance and exhaust emissions resulting from the use of an SI engine. The experiments were performed at different speeds for different ethanol-gasoline blends (E0, E10 and E20) under full load in a four-stroke, single-cylinder engine. As a result, air-fuel mixture ratios, torque, power, vibration and noise values, specific fuel consumption, harmful gas emissions (CO, HC, CO2 and NOx) was measured. Measurements were obtained with 96% accuracy. In this study, carbon monoxide and hydrocarbon emissions decreased, carbon dioxide and nitrogen oxide emissions increased by the addition of ethanol to gasoline. On the other hand, the addition of ethanol has also led to a certain increase in brake specific fuel consumption, vibration and noise levels.