Technical Paper
A Comparison of Emissions from Clean Diesel Fuels
1999-03-01
1999-01-1121
Exhaust emissions from various kinds of clean diesel fuels were evaluated using a commercial DI diesel engine in comparison with the emissions from a commercial diesel fuel containing 0.05% sulfur. The blending of a light paraffinic fuel to a commercial diesel fuel reduces HC, CO, PM and NOx emissions and a light fuel with aromatics or kerosene reduces PM and NOx but not HC and CO. The PM and NOx emissions from the paraffinic fuel are lower than these from the kerosene, and these emissions are decreased with an increase in the blending ratio of both light fuels to a commercial diesel fuel. Reformulated diesel fuels such as a clean city diesel fuel and fuels with few aromatics reduce PM and NOx emissions more than commercial diesel fuel, and the reduction rate is highly dependent on aromatic content. The effects on emissions of blending soybean methyl ester or tripropylene glycol methyl ether to a commercial diesel fuel were evaluated.
