Performance and emission characteristics of Jatropa biodiesel in dual fuel mode with CNG in a single cylinder four stroke diesel engine

Jatropa biodiesel is prepared with methanol to get jatropa oil methyl ester (JOME).Experiments are conducted with JOME duel fuel mode with compressed natural gas(CNG) in a single cylinder 4 stroke diesel engine. Performance parameters such as brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC), emissions such as CO, UBHC, CO₂, NO_x and opacity are determined at three injection pressures of 180,200 and 220 bar and two injection timings 27 deg btdc and 31 deg btdc. Parameters are compared with base line data of diesel fuel.It was found through experiments that JOME can be used as fuel with better performance at 200 bar pressure and advanced injection timing of 31 deg btdc.