1998-02-23

Fuel Composition Effects on SOF and PAH Exhaust Emissions from DI Diesel Engines 980507

The experiments were performed with two types of test engines, '72 model year type and '94 model year type engine, using both of conventional diesel fuel and synthetic diesel fuel, which has simple hydrocarbon components and no aromatics or sulfur content. SOF is extracted from the particulate sample exhausted out from the engines, then GC and GC-MS analyses were carried out. By comparing the results obtained, the role of high boiling point components in diesel fuel on SOF emission were observed. Further, by adding an artificially sulfur-containing compound and pyrene, which is a four ring polynuclear-aromatic-hydrocarbon (PAH), into the synthetic fuel, the effect of PAH content in fuel on PAH emission in SOF and the increase of SOF with increased sulfur content in fuel, were observed.

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