We developed a high-pressure fuel pump for a direct injection gasoline engine and used a hydraulic simulator to design it. A single plunger design is the major trend for high-pressure fuel pumps because of its simple structure and small size. However, the single plunger causes large pressure pulsation and an unstable flow rate, especially at high engine speed. Therefore, a fuel-pipe layout that inhibits the pressure pulsation and a flow-rate control that stabilizes the flow are the most important challenges in pump design. Our newly developed hydraulic simulator can evaluate the dynamic characteristics of a total fuel supply system, which consists of pump, pipe, injector, and control logic. Using this simulator, we have improved fuel flow by optimizing the outlet check valve lift and the cam profile, and we reduced pressure pulsation by optimizing the layout of fuel pipes. Our simulation results agreed well with our experimental results. Subsequently, we built an excellent single plunger pump and fuel piping system with a large flow rate and small pressure pulsation by using this simulator.


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    Titel :

    Development of High Pressure Fuel Pump by using Hydraulic Simulator


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yamada, Hiroyuki (Autor:in) / Tokuo, Kenichirou (Autor:in) / Hiraku, Kenji (Autor:in)

    Kongress:

    SAE 2005 World Congress & Exhibition ; 2005



    Erscheinungsdatum :

    2005-04-11




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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