As the decreasing availability of the fossil fuel is rising day by day, the search for alternate fuel that can be used as a substitute to the conventional fuels is rising rapidly. A new type of biofuel, Neem oil biodiesel, is introduced in this work for the purpose of fuelling diesel engine. Neem oil was extracted from neem seed by solvent extraction method and biodiesel was produced by transesterification method. The percentage yield of Neem oil and biodiesel were found to be 40% and 75% respectively. The properties were simulated in a model produced using GT power suite. The engine speed was varied and engine performance such as brake power, brake specific fuel consumption, brake mean effective pressure and the emission of biodiesel and petroleum diesel at various speed were determined and compared. The results show the improve performance of biodiesel. The performance characteristics of an engine were studied with biodiesel and petro-diesel. The brake power 31.25 kW, brake torque 102.8 N-mare found higher at 3600 rpm (case 1) and 1200 rpm (case 4) respectively. In biodiesel, specific fuel consumption is found more than the petro-diesel and the CO and CO2 emission were found lower in biodiesel than petro-diesel. The biodiesel have shown better performance than the petro-diesel.
Biodiesel, Neem seeds, GT – power engine, Diesel engine, Characterization.
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