202 燃料濃度不均一場における予混合燃焼の基礎的研究(GS-6・7 エンジンシステム(1))

概要

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In this study, the purpose is placed in the investigation for the combustion process in heterogeneous fuel concentration field like in gasoline direct injection engines. In the engine, flame cannot propagate and UHC is formed in very lean region. Moreover, NO concentration is higher than homogeneous fuel charge in spite of the lean burn. Furthermore, after the flame propagation, CO and UHC are oxidized as the diffusion combustion. Therefore it is needed to analyze these complex combustion process and the substances' formation process. In this study, by using the constant volume vessel, it can realize to simulate the combustion phenomenon in actual engine. In order to analyze the unsteady spark ignition combustion process, heterogeneous fuel distribution has been measured by NO-LIF. The heterogeneous fuel distribution condition was taken in the parameters, and shadowgraph photographing and pressure analysis were carried out. NOx and UHC concentration was measured by exhaust gas analysis.
一般社団法人日本機械学会の論文
2001-03-16