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Study on particulate formation mechanism in DI diesel engine~Effect of dimethyl carbonate addition
Published May 19, 1999 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
This paper is concerned with the particulate matter (PM) formation in direct-injection (DI) diesel engines. A system featuring an electromagnetically actuated sampling valve was used for sampling PM from the combustion chamber. The concentration of total particulate matter (TPM) and of two components, the soluble organic fractions (SOF) and insoluble fractions (ISF) were determined at different locations in the combustion chamber at different sampling timings. Conventional gas oil and 5% of dimethyl carbonate (DMC) added fuel were used. The results suggested that the PM formation was significantly affected by the wall quenching effects. The less PM was observed with DMC-added fuel for both in the combustion chamber and in the exhaust emission.