1994-03-01

The Emission of PAH from a DI Diesel Engine Operating on Fuels and Lubricants with Known PAH Content 940342

.Engine experiments were carried out in order to investigate the mechanisms involved in connection with the emission of lubricant related polyaromatic hydrocarbons (PAH) from a D.I. diesel engine. In the experiments only the mechanisms related to pyrene emissions were investigated, since synthetic fuels and lubricants containing pyrene as the only aromatic compond were used. Particulate matter (PM) and the soluble organic fraction (SOF) of PM as well as PAH emissions were measured for different engine conditions at different levels of pyrene in the lubricant and the fuel. Possible mechanisms of PAH transportation from the lubricant to the exhaust gas are discussed based on the experimental results, as well as the importance of fuel and lubricant to SOF and PAH emissions.

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