THE EFFECT OF INJECTION PRESSURE ON CIDI ENGINE PERFORMANCE FUELED WITH MADHUCA INDICA OIL METHYL ESTER AND ITS BLENDS

An increased usage of diesel in compression ignition engines, deteriorating fossil fuel reserves and mainly the hazardous environmental pollution due to exhaust emissions from automotives have instigate to search for a alternative renewable fuel that can be used in compression ignition direct injection (CIDI) engines. Recently the vegetable/animal fat based biodiesel turn out to be potential alternative renewable fuel source to replace fossil diesel fuel. It was noticed from many experimental analysis that biodiesel has showing less thermal efficiency and higher brake specific fuel and energy consumption when compared with diesel in unmodified diesel engine. The present research work aimed to evaluate the effect of change in fuel injection pressure on engine performance when fueled with madhuca indica oil methyl ester (MIOME) as fuel and identify the injection pressure at which the engine delivers higher brake thermal efficiency (BTE) and lower brake specific fuel consumption (BSFC), and brake specific energy consumption (BSEC). The experimental analysis was carriedout using a single cylinder, four-stroke, water cooled direct injection (DI) diesel engine and the results indicated that injection pressure has considerable effect on engine performance. It also noticed that the test engine delivered higher performance (higher BTE, lower BSFC and BSEC) with 220 bar of fuel injection pressure at full load condition when fueled with B20M biodiesel blend and B100M blend of MIOME has the lowest engine performance.