PERFORMANCE INVESTIGATION OF AN EGR BASED CRDI DIESEL ENGINE POWERED WITH BLENDS OF DIESEL AND SESAME OIL METHYL ESTER

Abstract

The diminishing supplies of petroleum and ecological problems have led to a need for more affordable and renewable fuels. Because of its biodegradability, high cetane count, low sulphur content, aromatic compound, and low volatility, biodiesel obtained from numerous renewable sources has been deemed acceptable alternative fuels. Biodiesel derived from non-edible biomass feedstocks such as linseed oil is seen as feasible choices for developing countries such as India, where edible oil consumption and cost are very high. Biodiesel has been growing as an alternative fuel in recent years and is a strong replacement for tidy diesel fuels. Biodiesel is mainly extracted from fats and oils using a range of methods such as dilution, pyrolysis, microemulsification and transesterification, but transesterification is currently the most common technique used in the processing of biodiesel. The purpose of the present work is to prepare Sesame oil methyl ester and to research the effect of linseed methyl ester efficiency and emissions. The engine is connected by a water-cooled eddy current dynamometer to calculate the load on the motor. The engine was calibrated to fuel injection timing at 23o CA bTDC and compression ratio 18:1 (suggested by the manufacturer). The various performance and emission characteristics, such as Brake Power (BP), brake specific fuel consumption (BSFC), brake thermal efficiency (BTE), mechanical strength, brake mean effective pressure (BMEP), carbon dioxide (CO2) emissions, hydrocarbon emissions (HC), NOx emissions, and smoke opacity were evaluated on a single cylinder with 18:1 compression ratio operated at constant. The SOME10 and SOME20 test results were compared to diesel with or without an EGR. It was found that the emission of CO and HC increased with the content of blend while the thermal performance of the brakes decreased with the concentration of blend. The use of EGR has lowered NOx emissions slightly