Effect of Injection Time on the Performance and Emissions of LPG ME of Mahua Oil Dual Fuel Engine

There is an increasing interest in India, to search for suitable alternative fuels that are environment friendly. This led to the choice of non edible mahua oil as one of the main alternative fuels to diesel oil. Hence in the present work, Methyl Ester of Mahua Oil (MEMO) was used as pilot fuel and Liquefied Petroleum Gas (LPG) was used as primary fuel. A single cylinder, direct injection, four stroke, diesel engine was modified to work in dual fuel mode and the effect of injection time on the performance and emission of the dual fuel engine was studied. During tests, the engine was running smoothly with the MEMO. From the test results, it is observed that, at part loads, the advanced injection timing of 30° bTDC results in slight increase in brake thermal efficiency and lower exhaust emissions as compared to rated injection timing of 27° bTDC and retarded injection timing of 25° bTDC.