Investigation on the Performance and Emissions of CI Engine using Waste Fried Oil

An experimental investigation has been carried out to analyze the performance and emission characteristics of a compression ignition engine fuelled with biodiesel and its blends 20%, 30%, and 40% in mineral diesel. The biodiesel making process is two major steps. First preheating process and second convert to biodiesel. Preheating is waste fried oil to heat 60ºc. And convert the biodiesel by using transesterification method. Take methanol of 20% on net amount of the waste fried oil and catalyst KOH of 9% on net amount of the methanol, mix this two chemicals in properly and this composition is add drop by drop in oil this process is maintain 70ºc at 900 rpm by using hot plate magnetic stirrer apparatus. The performance parameters evaluated include thermal efficiency, brake power, specific fuel consumption and exhaust emissions include mass emissions of CO, CO2, HC, NOx and smoke opacity. The results of the experiment in each case were compared with baseline data of mineral diesel. Significant improvements have been observed in the performance parameters of the engine as well as exhaust emissions, when lower blends of biodiesel. The gaseous emission of oxide of nitrogen from all blends are lower than mineral diesel at all engine loads. Biodiesel blends with diesel can replace diesel for operating the CI engines giving lower emissions and improved engine performance.