Effects of Fuel Properties on Diesel Exhaust Emission (1). Effects of Sulfur and Aromatics Contents on Emission of Particulate and Semi-Volatile Matter.:Effects of Sulfur and Aromatics Contents on Emission of Particulate and Semi-Volatile Matter

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This study was conducted to assess the effects of sulfur and aromatics contents of light oil on diesel exhaust emission. Almost similar components of light oil except sulfur atomatics contents were used for tests with a direct injection diesel engine and a swirl chamber engine operated at Japanese urban driving test cycle (13 mode).<BR>The dilution tunnel method was used in this study. Diesel exhaust particulate and semi-volatile organic matter (VOM) were collected from the diluted exhaust gas with fluorocarbon coated glass fiber filters and Amberlite XAD-2 resin. The filters and resin were extracted with dichloromethane using Soxhlet extraction to collect the soluble organic fraction of particulate matter (SOF) and VOM. SOF and VOM were examined to chemical analysis and mutagenicity test with a modified Ames assay.<BR>Reduction of sulfur content in fuel resulted to the decrease of particulate emission. This result could be attributed to the decrease of particulate matter associated sulfate and bonded water. While, emission of polynuclear aromatic hydrocarbons and mutagenicities of SOF and VOM were not affected by fuel sulfur content. Increasing the aromatic contents resulted to the increase of particulate emission, polynuclear aromatic hydrocarbons and mutagenicities of SOF with direct injection diesel engine.
社団法人大気環境学会の論文