Simultaneous Reduction of Pressure Rise Rate and Emissions of a CI Engine by Use of Dual-component Fuel Spray


Combustion and emissions characteristics of dual-component fuel were evaluated for ranges of injection timing and intake oxygen concentration. Fuels used were mixtures of a gasoline-like component, i-octane, and diesel fuel-like component, n-tridecane, so that the effects of the difference in chemistry and volatility were investigated. The experimental study performed in a CI engine and the numerical analysis using multi-component fuel model demonstrated that the dual-component fuel reduced pressure rise rate due to the difference in the vapor formation rate between two components which have the different reactivity. Furthermore, the experimental results showed that the dual-component fuel achieves low NOₓ and soot combustion without suffering from penalty of thermal efficiency.本報では,二成分からなる混合燃料を圧縮着火機関に適用し,広範囲な燃料噴射時期及び雰囲気酸素濃度において,低圧力上昇率かつ低エミッションな燃焼となることを確認した.この現象解明を目的に,多成分燃料噴霧モデルを用いて,この混合気形成および着火・燃焼メカニズムを考察した.


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  • Accession Number: 01673516
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 31 2018 3:24PM