ディーゼル排気の軽質有機微粒子

概要

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Lighter organic particulates emitted from a high-speed four-cycle DI diesel engine at various loads for commercial diesel fuels and some blended fuels have been studied under steady operating conditions. Emissions of lubricating oil, fuel fractions, and combustion products in the lighter organic fraction have been evaluated by chemical analysis using a gas chromatograph and a mass spectrometer. Furthermore, flow reactor experiments under atmospheric pressure were conducted to simulated the effects of temperature on forming particulates in the engine cylinder. The fractions having higher boiling points than 300℃ are hot fully decomposed even at flow-reactor temperatures of 880℃. Side-chained two-ring compounds which are the major aromatic component in commercial fuel rapidly decompose to yield a polymerized substance at much lower temperatures than other fuels. This explains the dependence of SOF emission on load and fuel property.
社団法人日本機械学会の論文
1989-07-25