EXPERIMENTAL INVESTIGATION ON VCR ENGINE BY USING DUAL BIODIESEL

In the present study, experiments has been carried out on a direct injection, single cylinder, constant speed, water cooling system VCR engine at injection pressures 200, 210 bar and compression ratio of 17.5 using various blends. The effect of dual biodiesel blends and injection pressure were examined with various engine loads. Pongamia oil and Lemongrass oil were blended with diesel at various blend ratios for the purpose of investigation. Performance and emission characteristics obtained from the systematic study reveals that brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) of blend B20 (i.e. Pongamia 5%, Lemongrass 15% and Diesel 80%) was higher than diesel. The emissions of carbon monoxide, hydro carbons and carbon dioxides of dual biodiesel blends were better than that of diesel. It was identified that with increase in injection pressure from 200bar to 210bar can be improving the performance analysis while reducing the exhaust gas emissions. But increases the nitrogen oxides emissions