Reduction of Emissions from Common-rail Diesel Engine using Mahua and Pongamia Methyl Esters
International Journal of Advanced Engineering Research and Science
In this study, the performance, emission and combustion characteristics of two different biodiesel blends produced from Mahua and pongamia methyl esters were compared with conventional diesel fuel. Methyl esters for experiment were produced by using a catalytic transesterification process and, compared the properties with ASTM standard values of biodiesel fuel and diesel fuel. The experiments were performed in a four stroke, single cylinder, common rail direct injection (CRDI) system assisted
... ) system assisted diesel engine at a constant speed of 1500rpm with varying injection pressure. During the tests, the specific fuel consumption, brake thermal efficiency, combustion and exhaust emissions of the CRDI diesel engine were measured. From the results it is clear that the HC, CO and smoke levels are drastically reduced when using the methyl ester blends. Especially in the case of MME20, NOx emissions was minimum when compared with other blends and it also found less amount of other harmful emissions like HC, CO and smoke. Keywords-Common rail direct injection (CRDI), Catalytic transesterification, Mahua methyl ester (MME), Pongamia methyl ester (PME), Emissions, Combustion. Nomenclature ASTM American Society for Testing and Materials BSFC Brake specific fuel consumption, kg/kWh BP Brake power, kW BTE Brake thermal efficiency, % CO Carbon monoxide, % HC Hydrocarbon, ppm NOx Oxides of Nitrogen, ppm CRDI Common rail direct injection rpm Revolution per minute MME Mahua methyl ester PME Pongamia methyl ester MME20 Mahua methyl ester 20% + Diesel fuel 80% MME40 Mahua methyl ester 40% + Diesel fuel 60% PME20 Pongamia methyl ester 20% + Diesel fuel 80% PME40 Pongamia methyl ester 40% + Diesel fuel 60% I.