The performance of multi-hole injectors designed for use in second-generation direct-injection gasoline engines has been characterised in a constant-volume chamber. Two types of multi-hole injector have been used: the first has 11 holes, with one hole on the axis of the injector and the rest around the axis at 30 degrees apart, and the second has 6 asymmetric holes located around the nozzle axis. Measurements of droplet axial and radial velocity components and their diameter were obtained using a 2-D phase Doppler anemometer (PDA) at injection pressures up to 120 bar, chamber pressures from atmospheric to 8 bar, and ambient temperatures. Complementary spray visualisation made use of a pulsed light and a CCD camera synchronised with the injection process.Comparison of the results between the two injectors has allowed quantification of the influence of the number of holes and nozzle length-to-diameter ratio on the spray structure and spray tip penetration, droplet velocity and size distribution as a function of injection and chamber pressures of relevance to gasoline passenger cars.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Spray Structure Generated by Multi-Hole Injectors for Gasoline Direct-Injection Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Arcoumanis, C. (Autor:in) / Nouri, J. M. (Autor:in) / Gavaises, M. (Autor:in) / Mitroglou, N. (Autor:in) / Yan, Y. (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2007



    Erscheinungsdatum :

    2007-04-16




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Spray structure generated by multi-hole injectors for gasoline direct-injection engines

    Mitroglou,N. / Nouri,J.M. / Yan,Y. et al. | Kraftfahrwesen | 2007


    Spray Pattern Recognition for Multi-Hole Gasoline Direct Injectors Using CFD Modeling

    Kirwan, John / Chang, Shi-Ing / Das, Sudhakar | SAE Technical Papers | 2009


    Spray pattern recognition for multi-hole gasoline direct injectors using CFD modeling

    Das,S. / Chang,S.I. / Kirwan,J. et al. | Kraftfahrwesen | 2009


    Technique for analyzing swirl injectors of direct-injection gasoline engines

    Kubo,M. / Sakakida,A. / Iiyama,A. et al. | Kraftfahrwesen | 2001


    Technique for Analyzing Swirl Injectors of Direct-Injection Gasoline Engines

    Iiyama, Akihiro / Sakakida, Akihiro / Kubo, Masaaki | SAE Technical Papers | 2001