In these times of potential energy crisis and climate change, search for alternative sources for conventional fuel has led us to bio-diesel. Vegetable oils are typically highly dense and viscous and to overcome it we prefer the methyl ester of the oil. In our study we have used methyl ester of Palm stearin oil, which can be found in our country (India) abundantly, and conducted emission and performance tests on a non-modified diesel engine. Diesel along with four different blends of 5%, 10%, 20% and 30% by mass were used to carry the tests in different loading conditions. The results have shown promising possibility of the use of palm-stearin oil blended bio-diesel as CO, NOX and HC emissions reduced and B-30 provided the best mechanical efficiency.
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