An air-mix type 2-hole injector has been developed for 4-valve engines. In order to finely atomize the fuel whilst maintaining the separation of the twin sprays that assures minimal wetting of the partition between the siamese ports, the location of the air inlet passages was optimized and studies were conducted to determine the appropriate geometry of the fuel separation portion of the adapter. High speed photographs verify that the finalized adapter realizes centralized fuel flow through the splayed conduits so that the maximum air entrainment is achieved.This new injector both improves transient response and reduces HC emissions under all temperature conditions. It further enables injection timing to be retarded to the intake stroke at the same low HC level.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Toyota Air-Mix Type Two-Hole Injector for 4-Valve Engines


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1991



    Publication date :

    1991-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


    Toyota air-mix type two-hole injector for 4-valve engines

    Sugimoto,T. / Takeda,K. / Yoshizaki,H. et al. | Automotive engineering | 1991


    Two hole Injector Improves Transient Performance and Exhaust Emissions of 4-valve Engines

    Iwata,M. / Furuhashi,M. / Ujihashi,M. et al. | Automotive engineering | 1987


    Two-hole Injector Improves Transient Performance and Exhaust, Emissions of 4-valve Engines

    Ujihashi, Michiaki / Furuhashi, Michio / Iwata, Minoru | SAE Technical Papers | 1987


    Toyota To Buy GM Engines...

    Online Contents | 1995


    Steady Progress for Toyota industrial engines

    Wadman,B. / Toyota Motor,JP | Automotive engineering | 1989