Using Blends of Diesel Fuel and Methyl Esters of Beef Tallow’

A Cummins N14-410 diesel engine was operated on twelve fuels produced by blending methyl tailowate, methyl soyate and ethanol with No.2 diesel fuel. Engine incylinder pressure data were used to evaluate engine performance. Peak cylinder pressures for each fuel blend at all engine speeds were lower than peak pressure for diesel fuel with the exception of the 80 % diesel, 13 % methyl tallowate, and 7 % ethanol; and the 80 % diesel, 6.5 % methyl tallowate, 6.5 % methyl soyate and 7 % ethanol blends. The indicated mean effective pressure (IMEP) values for ail fuel blends were less than for diesel fuel. The differences in lMEP values correlated with differences in power output of the engine. Similarly, maximum rates of pressure rise for most fuel blends were less than for diesel fuel. It was concluded that the fuel blends used in this study would have no detrimental long term effects on engine performance, engine wear and knock.