The fuel injection process in the port of a firing 4-valve SI engine at part load and 25°C head temperature was observed by a high speed video camera. Fuel was injected when the valve was closed. The reverse blow-down flow when the intake valve opens has been identified as an important factor in the mixture preparation process because it not only alters the thermal environment of the intake port, but also strip-atomizes the liquid film at the vicinity of the intake valve and carries the droplets away from the engine. In a series of “fuel-on” experiments, the fuel injected in the current cycle was observed to influence the fuel delivery to the engine in the subsequent cycles.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Visualization of Mixture Preparation in a Port-Fuel Injection Engine During Engine Warm-up


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1995



    Publication date :

    1995-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Mixture Preparation in a SI Engine with Port Fuel Injection During Starting and Warm-Up

    Fox, J. W. / Heywood, John B. / Min, K. D. et al. | SAE Technical Papers | 1992


    Mixture preparation in a SI engine with port fuel injection during starting and warm-up

    Fox,J.W. / Min,K.D. / Cheng,W.K. et al. | Automotive engineering | 1992


    Mixture preparation mechanisms on a port fuel injection engine

    Costanzo,V.S. / Heywood,J.B. / Massachusetts Inst.of Technology,Cambridge,US | Automotive engineering | 2005


    Mixture Preparation and HC Emissions of a 4-Valve Engine with Port Fuel Injection During Cold Starting and Warm-up

    Takeda, Keiso / Saito, Kimitaka / Sekiquchi, Kiyonori et al. | SAE Technical Papers | 1995


    Mixture preparation and HC emissions of a 4-valve engine with port fuel injection during cold starting and warm-up

    Takeda,K. / Yaegashi,T. / Sekiguchi,K. et al. | Automotive engineering | 1995