Formation Process of SOF in the Combustion Chamber of IDI Diesel Engines

Yasuhiro Fujiwara; Shigeru Tosaka; Tadashi Murayama

doi:10.4271/932799

1993-10-01

Formation Process of SOF in the Combustion Chamber of IDI Diesel Engines 932799

Exhaust Particulate emitted from diesel engines is a serious problem form the point of view of the environment and energy saving. Exhaust particulate is consist of dry soot and SOF (soluble organic fraction). To clarify the formation process of SOF in the combustion chamber of diesel engines, first lower temperature column condensed method was investigated. The gas from combustion chamber was collected to the sampling column using this method, and the cracked as well as the condensation polymerized components were analyzed with gas chromatography.

The sampling condition of the low temperature column condensation method are length of condensation column 600mm, cooling temperature 198K, and dilution ratio 5. The diesel fuel injected into the combustion chamber, first cracks into lower boiling point hydrocarbons, this is followed by dehydrogenation and formation of benzene ring compounds through condensation polymerization. This is followed by the formation of PAH.

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Formation Process of SOF in the Combustion Chamber of IDI Diesel Engines 932799

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