Performance and Emission Analysis of a Spark Ignition, 4-Stroke, Single Cylinder IC Engine Using Different Ethanol Blends
Abstract
The purpose of this study is to investigate experimentally and compare the engine performance and pollutant emission of a SI engine using different percentage of ethanol as additive to gasoline. Decrease in calorific value results in higher consumption of fuel for ethanol-gasoline blend as compared to petrol. The brake thermal efficiency, torque, power increase with increase in percentage of additive. E40 gave the best result for all measured parameters at all engine loads. E40 has good thermal efficiency at higher loads. As we increase the percentage of Ethanol in fuel, Specific fuel consumption increases. This is due to the lower heating value of ethanol compared with gasoline. As a result of improved combustion, reduction in CO, NOx and HC emission and Exhaust temperature while increase in CO2 emission. HC and CO emission reduced for all the blends because of better combustion CO gets converted in to CO2 and hence CO2 emission increases.
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