Abstract
The paper investigates the performance and emission characteristics of CI engine fuelled with methyl ester of waste vegetable oil blended diesel fuel with DEE as additives. In this investigation, waste sunflower oil after transesterification with methanol is obtained as biodiesel methyl ester. The biodiesel methyl ester prepared from transesterification process was blended in 3 different compositions B10, B20 and B30 with diesel. The additive diethyl ether(DEE) was also added to each of the blended mixtures in concentration of 5ml and 10ml and its properties were studied The experiment was conducted on the single cylinder four stroke water cooled naturally aspirated diesel engine coupled with eddy current dynamometer at constant speed of 1500rpm by varying the load. The performance characteristics infer that the B20(5DEE) was found as most optimum fuel as compared to all the other blends as it was found with least value of Brake Specific fuel Consumption (BSFC) and the highest value of the Brake Thermal Efficiency (BTE). Considering emission characteristics, B30(5DEE) was the most optimum fuel as it was found with the lowest emissions of NOx, CO and HC. Also, exhaust gas temperature for B30(5DEE) was least which shows better energy generation in the power stroke.
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