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Biodiesel from Waste Oil and Grease: Effects on Engine Performance, Efficiency, and NOX Emissions

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1008608.(doi:10.13031/2013.32001)
Authors:   J A Davis, D M Johnson, J V Skinner, R Cox, D Edgar, G W Wardlow
Keywords:   Keywords Biodiesel, Biofuel, Engine performance, Exhaust Emissions, NOX Emissions, Engine efficiency

The purpose of this study was to compare the effects of ultralow sulfur petroleum diesel (D2) to B5 and B20 blends of both BQ9000 certified biodiesel and non-BQ9000 certified biodiesel on engine performance, efficiency and NOx emissions using a single cylinder Yanmar diesel engine. Laboratory analysis indicated that the non-BQ 9000 B100 biodiesel used to make the blends exceeded ASTM D6751 standards for both free glycerin and total glycerin. Engine power output was significantly higher (p<.05) with the certified biodiesel blends as compared to non-certified blends.NOX emissions were significantly lower for the certified blends as compared to the non-certified blends. Specific fuel consumption was significantly lower for the certified blends as compared to the non-certified blends. In general, engine performance, fuel efficiency, and NOX emissions with D2 were intermediate to the non-certified and certified biodiesel blends.

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