NOX EMISSION REDUCTION OF CI ENGINE USING OPTIMIZED DUAL BLEND BIODIESEL

This experimental work was conducted on four strokes, single cylinder with variable compression ratio with optimized biodiesel blend of soybean methyl ester and rapeseed methyl ester biodiesels blended with each other in two different ratios. Outcomes investigated and compared with standard diesel fuel. An experiment has been conducted at compression ratios of 16:1, 17:1, and 18:1. The impact of compression ratio on mechanical efficiency and exhaust gas emissions like Nitrogen oxides (NOx), carbon mono oxide (CO), hydrocarbon (HC), has been presented. It was concluded that NOx emission was higher at without blended biodiesel operation compared with diesel fuel and it was opposed by dual biodiesel blending. According to experimental values, there was 28% to 50% reduction at 25 % and 50 % load conditions in NOx emission. There was a 30 % reduction in carbon mono oxide emission and 35 % reduction HC emissions for the optimized blend of 80 % soybean methyl ester and 20% rapeseed methyl ester