An Experimental Study of Diesel Engine Characteristics Fueled with Ethanol Blended Diesel
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In the present study an experimental investigation was conducted with Ethanol as an alternative fuel for the diesel engines. To investigate the engine characteristics using ethanol- diesel blended fuel a four stroke, single cylinder DI-CI engine was used. The engine was tested at different loading conditions with ethanol-butanol-diesel percentage by volume ratios of 10:5:85(E10B5D85), 15:5:80(E15B5D80) and 20:5:75(E20B5D75). To form stable mixture of ethanol and diesel a 5% butanol was used in all blends. The test results show that it is feasible to use ethanol blended diesel with butanol to replace pure diesel as the fuel for diesel engine. The brake thermal efficiencies were comparable with that of the diesel for the test engine when fuelled by the ethanol blended diesel. Increase of brake specific fuel consumptions which is due to the lower heating value of ethanol were observed with blends. The emissions characteristics were also studied when fuelled by the blends, it is observed that the carbon monoxide (CO) and hydro carbon (HC) were reduced when the engine ran at all loads. The nitrogen oxides (NOX) emissions were increased for all blends at all loads.
Keywords: Diesel Engine, ethanol, performance, emission
Article published in International Journal of Current Engineering and Technology, Vol.7, No.1 (March-2017)