Abstract
ABSTRACTThe main emphasis of this work is to explore the biodiesel obtained from waste cooking oil and its utilisation in CI engine blended with ethanol and conventional diesel. Waste cooking oil methyl esters (WCOME) was prepared by transesterification with a heterogeneous catalyst such as CaO. Diesel and WCOME blends of five different proportions with 5% of ethanol uniformly added to them were used as a fuel in a variable compression ratio, constant speed, compression ignition engine. The performance, emission and combustion characteristics of the engine at part and full load conditions were compared with that of neat diesel, varying the compression ratio from 18 to 22. From the experimental results, the blend comprising 20% waste cooking oil, 5% ethanol and 75% mineral diesel showed ameliorated performance and emission characteristics, compared with all the other fuel blends at an optimum compression ratio of 21.
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