A numerical study of airflow at piston engine ports and the cylinder was conducted to obtain the swirl ratio and manifold volumetric efficiency. The mathematical model of the cylinder induction was validated by comparing it with published experimental data. Swirl ratio and manifold volumetric efficiency were analyzed using computational fluid dynamics (CFD) modeling of cylinder induction and compression strokes. The effects of charge pressure, engine speed, and charge air temperature on swirl ratio were studied. It was also found that the swirl ratio slightly increases as inlet air temperature and pressure grow, and it linearly decreases as engine speed rises. Furthermore, it was found that vortex speed is proportional to the power of 0.9 of the engine speed. The reasons for the changing swirl ratio and manifold volumetric efficiency were researched.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Numerical Estimation of Medium-Speed Engine Swirl Ratio by Cylinder Induction Modeling


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Automotive Technical Papers ; 2023



    Erscheinungsdatum :

    01.08.2023




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch






    Swirl in a four-stroke cycle engine cylinder

    Tanabe,S. / Hamamoto,Y / Ohigashi,S. et al. | Kraftfahrwesen | 1978


    Induction swirl in a multiple intake valve engine - three-dimensional numerical analysis

    Wakisaka,T. / Shimamoto,Y. / Isshiki,Y. et al. | Kraftfahrwesen | 1988


    Turbulence characteristics of swirl in an ic engine cylinder

    Hamamoto,J. / Tomita,E. / Univ.of Okayama,JP | Kraftfahrwesen | 1988