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Effect of DMC-Blended Fuel on PM Formation in Combustion Chamber of DI Diesel Engine by Direct Sampling System
Published May 19, 2010 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
The purpose of this paper is to study PM reduction mechanism of DMC-blended fuel in DI diesel engine.
A direct sampling system was used to obtain spatial and temporal information of combustion products in a combustion chamber. Experiments were conducted using gas oil and DMC-blended fuel. The experiment data was arranged with isoconcentration maps. As a result, maximum concentration THC and SOF reduce, the fuel spray volume of DMC-blended fuel which is low boiling temperature was slightly increased than gas oil.
In addition, DMC-blended fuel has oxygen. Therefore, local excess air ratio increased.