PERFORMANCE AND EMISSIONS ANALYSIS OF DIESEL BLENDED WITH NAHAR BIODIESEL BY VARYING COMPRESSION RATIO OF CI ENGINE

Abstract

The present experimental investigation evaluates the effects of using blends of diesel fuel with 18% concentrations of Ethyl Ester of Nahar biodiesel blended with various compression ratios. The experiment was carried out with three different compression ratios. Experimental Biodiesel was extracted from Nahar oil, 18% (B18) concentrations of oil in diesel was found to be best blend ratios from the earlier experimental study. The engine was maintained at various compression ratios i.e., 16, 17 and 18 respectively. It is found that, at compression ratios of 18:1 for B18 blended fuel (Pure Diesel 82% + Nahar Biodiesel 18%) shows better performance and lower emission level which is very close to neat diesel fuel. It is also found that the increase of compression ratios increases the Brake Thermal Efficiency and reduces Brake Specific Fuel Consumption and having lower emission without any engine in design modifications.