OPTIMIZATION OF DIESEL ENGINE PARAMETERS WITH BLENDS OF WASTE COOKING OIL BIODIESEL FUEL AND DIETHYL ETHER AS AN ADDITIVE BY TAGUCHI METHOD

Abstract

This Science and Engineering tremendous progress in automotives and transportation sectors drastically created an accessible world. The Waste cooking oil biodiesel can be regarded as potential feedstock for biodiesel usage as it can convert waste to energy. The present study is to optimize the injection parameters of the diesel engine, blends of waste cooking oil biodiesel, diethyl ether additive concentration and bring out optimize set of operating variables using taguchi method theoretically. The experimentation was carried on single cylinder four stroke naturally aspirated diesel engine using diesel, waste cooking oil biodiesel and its blends WCB20D5 (20% biodiesel, 75%diesel, 5%diethylether additive), WCB20D10, WCB30D5, WCB30D10, WCB40D5, WCB40D10, WCB100 ( pure biodiesel). Injectors with 3holes, 4holes and injection pressures 180 bar ,200 bar and different loading conditions (0%,20%,40%,60%,80%,100%) of the rated engine power were used to study their effect on the performance and emissions on diesel engine. The experimental results shown that the engine performance and emissions were better at higher set of operating variables. Taguchi method was used for optimization and analysis was carried out using “Minitab-18”statistical software. The taguchi analysis identified that 200 bar injection pressure, nozzle hole geometry with 4 holes,10% additive concentration for blend 20 under 4.16 KW of brake power(80%) were optimum parameters setting for engine brake thermal efficiency. For BSFC 180 injection pressure,3 holes injector holes,5% additive concentration, blend 40 and load 3.12kw were optimized. The optimum parameters for emissions were 200bar injection pressure,4 hole injector,10%additive concentration, blend 40, and load of 5.2KW of power for emissions using biodiesel. It was clearly observed that the engine performance and emissions were largely influenced by engine load, blends and least influenced by injector holes, injection pressure. Thus the present investigation shown that waste cooking can be used as a alternative fuel in diesel engines without significant modification.