A new model for radiation heat transfer in DI diesel engines has been developed. The model calculates the heat transfer rates as a function of the instantaneous values of the radiation zone size, radiation temperature, and of the absorption coefficient of the soot-laden gas. The soot concentration levels are calculated from kinetic expressions for soot formation and burnup. The spatial distribution of the radiant heat flux along the combustion chamber walls is calculated by a zonal model. The model has been applied to a conventional heavy duty highway DI diesel engine to generate predictions over a range of engine speeds and loads. These predictions indicated a wide variation in the ratio of radiation to the total heat transfer, ranging from less than ten percent to more than thirty percent, depending on the speed and load. Simulations were also made of the same engine lined with ceramic materials, for which the predicted ratio of radiation to the total heat transfer was found to be substantially increased.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Heat Radiation in D.I. Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Keribar, Rifat (Autor:in) / Morel, Thomas (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1986



    Erscheinungsdatum :

    01.03.1986




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Heat radiation in D.I. diesel engines

    Morel,T. / Keribar,R. / Integral Technologies,US | Kraftfahrwesen | 1986


    Noise radiation from diesel engines

    Astrupp,T. | Kraftfahrwesen | 1985


    Heat transmission in diesel engines

    Nusselt, W. | Engineering Index Backfile | 1926


    HEAT REJECTION FROM DIESEL ENGINES

    Nutt, Harold V. / Huckle, Myron S. | SAE Technical Papers | 1936


    Heat measurements of Diesel engines

    Liesegang, W. | Engineering Index Backfile | 1930