PERFORMANCE AND WEARING STUDIES OF MEDIUM SPEED DIESEL ENGINE USING BIODIESEL FUEL

Abstract

The objective of this study was to investigate the performance and wear of medium speed diesel engine when different types of fuels including diesel, B20, B50 and B100 are used. The study was divided into two parts viz. 1) engine performance test and 2) engine wear test of long-term run. Performance test results showed that the maximum engine power was found at engine speeds ranging from 1,800 to 2,000 RPM, the power obtained from B20, B50 and B100 were less than that from diesel fuel by 4.57%, 9.30% and 9.60%, respectively. Engine torque of B20, B50, and B100 showed less engine torque than that of diesel fuel by 2.62%, 4.37% and 9.60% respectively. Specific fuel consumption (SFC) of B20, B50, and B100 were greater than that of diesel fuel by 1.81%, 6.14% and 9.39%, respectively. Considering the engine durability, the wear of piston rings (weight loss) increased with an increase in biodiesel concentration in biodiesel-diesel mixtures.