ANALYSIS ON THE PERFORMANCE AND EMISSION TRAITS OF A CI DI ENGINE EMPLOYING PAPAYA BIODIESEL AND ITS BLENDS

Abstract

Diesel engine plays a primary role in the sectors of energy and transportation. In the present research investigation, the methyl ester derived from the seeds of papaya is used to access the performance, emission and combustion traits of a single cylinder diesel engine, the employed feedstock seed falls under second generation feedstock and it has an oil content of 38%. The process of transesterification which is employed to enhance the properties of neat oil resulted in 82% of methyl ester. The results outcomes revealed that the blend B25 performed better in contrast to other employed blends and it is suggested as optimum. The specific fuel consumption, brake thermal efficiency, the emission of carbon monoxide, hydrocarbon and nitrous oxide of the optimum blend at maximum load is 0.280 kg/kW h, 31.44%, 0.093% (by volume), 55 ppm and 988 ppm, respectively. While the exhaust gas temperature and smoke density is 318 °C and 49.02 HSU. The cylinder pressure and heat release rate of the optimum blend at maximum load is 75.84 bar and 41.06 kJ/m3 deg.