1988 Volume 50 Issue 4 Pages 7-15
In the previous paper (Part 1), the tested engine was remodeled in order to utilize fumigated alcohol in a diesel engine. When supplying alcohol to the diesel engine, it was observed that the optimal injection timing of the engine with the precombustion chamber was at BTDC 4°CA.
The performance of the diesel engine was determined in terms of brake horsepower, brake thermal efficiency, smoke density, emissions and noise. Therefore, in this paper, the performance of the engine at injection timing of BTDC 4°CA with methanol fumigation was compared with that of the same engine operation with diesel fuel only, and we tested the engine with fumigation of ethanol which is one of promising fuels for diesel fuel substitution. It was concluded from the experiments that brake horsepower and brake thermal efficiency were improved and smoke density decreased. On the other hand, it was pointed out the problems of alcohol fumigation that HCHO and unburned alcohol were discharged and noise level rose.
