Pefformance and Emission Evaluation of Direct Inejction Diesel Engine Using Canola, Sesame Biodiesels with N-Butanol

Abstract

Biodiesels from vegetable oils are also gaining momentum as a encouraging fuels which acts as alternative for agricultural diesel engines. Even though there is a slight penalty in the performance parameters by the usage of vegetable biodiesel fuels in diesel engines because of their high viscosity, there is considerable reduction in emissions which is dominant factor from the environmental perspective. In the present experimental work four fuels Canola (20% Canola oil plus 80% Diesel) biodiesel (B20C),Sesame (20% Sesame oil plus 80% Diesel) biodiesel (B20S), B20C blended with 5% n-butanol(B20C5B) and B20S is blended with 5% nbutanol(B20S5B) have tried as an alternative fuels to the Diesel. In the primitive stage tests were supervised on diesel engine with diesel. Thereafter in the second stage, tests were directed at identical operating conditions by using B20C, B20S and their blends as biodiesels. The engine important performance parameters brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) and also the emission characteristics hydrocarbons (HC), carbon monoxide (CO), smoke opacity and nitrogen oxides (NOx) are evaluated. The results are contrasted with respect on base line data (diesel). From the experimental readings it was observed that the BTE of B20C, B20S, B20C5B and B20S5B at 100% load decreased by 2.64%,1.9 %,1.41% and 0.94% respectively, relative to diesel (D). At maximum loading condition BSFC for diesel,B20C,B20S,B20C5B and B20S5B are 0.254, 0.284,0.273,0.270 and 0.260kg/kWh. Overall, it is concluded that the emission characteristics of HC, CO and Smoke opacity are dropped for all tested biodiesels when compared to diesel fuel.