Characterisation of Biodiesel on IC Engine

This study explores the different performance characteristics and emission of different pollutants using different blends in a variable compression ratio (VCR) engine. Biodiesel synthesized from cotton seed oil using a heterogeneous catalyst was investigated for emission analysis on a single-cylinder VCR engine with various blending ratios as well as load. Blends (biodiesel + diesel) of B00, JB15, B30, B45, B60, B75 and B100. The emission parameters, such as nitrogen oxides (NOx), carbon monoxide (CO), sulphur oxide(SOx), Crabon dioxide(CO2) and hydrocarbon (HC), were studied and compared to diesel fuel. Results showed that, among the blends prepared from methyl ester of Cotton seed oil, B30 and B45 shows reduction in emissions of CO and HC up to 30 and 40%, respectively, with an increment of NOx emission up to 25% at the lowest load and compression ratio (CR) of 17.5. The performance parameter brake specific fuel consumption (BSFC), mechanical efficiency (ME), brake power (BP), indicated power (IP), volumetric efficiency (vol. eff.) were studied and compared to diesel fuel. Results showed that, among the blends B30 and B45 shows all performance parameter near about diesel fuel at compression ratio(CR) 14 and 17.5.