A new orifice plate (OP) for advanced fuel injection characteristics is presented. The OP is designed to optimize the air-fuel mixture generation and transportation within individually shaped manifold geometries of spark-ignition engines. To generate the suitable spray characteristics, the basic OP design and its flow characteristics have some features originating from the well known turbulence nozzle principle:Turbulence generating flow deflections within the OP are achieved by superimposing layers containing flow cavities, which are displaced from one another. The flow deflections effect atomization and define the spatial spray beam orientation.A great variety and a high volume of precisely structured, low cost OPs can be produced daily by micromachining the layers in electroformed nickel. The flow cavities and outer dimensions of each layer are shaped by photo-resist structures.This paper describes the new OP's design development achieved through engine tests, flow simulations and experimental spray tests. A suitable OP manufacturing method is illustrated. For a wide range of flow rates, the new OP produces multiform spray shapes containing finely atomized, homogeneously distributed droplets. These characteristics are suitable for improving spray propagation and air-fuel mixture preparation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Electroformed Multilayer Orifice Plate for Improved Fuel Injection Characteristics


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Ader, Beate (Autor:in) / Schatz, Frank (Autor:in) / Heyse, Jörg (Autor:in) / Schlerfer, Jörg (Autor:in) / Haubold, Sven (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1997



    Erscheinungsdatum :

    1997-02-24




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Electroformed multilayer orifice plate for improved fuel injection characteristics

    Heyse,J. / Schatz,F. / Ader,B. et al. | Kraftfahrwesen | 1997


    The poppet orifice fuel injection nozzle

    Sczomak,D.P. / General Motors,US | Kraftfahrwesen | 1990


    Compound Electroformed Metal Nozzles for High Pressure Gasoline Injection

    Greehan, James L. / Evers, Lawrence W. / Gruhlke, William L. | SAE Technical Papers | 1998


    Improved Orifice Plate for Spray Gun

    Cunningham, W. | NTRS | 1986


    Compound electroformed metal nozzles for high pressure gasoline injection

    Gruhlke,W.L. / Evers,L.W. / Greehan.J.L. et al. | Kraftfahrwesen | 1998