Detailed heat transfer measurements were made in the combustion chamber of a Cummins single cylinder NH-engine in two configurations: cooled metal and ceramic-coated. The first configuration served as the baseline for a study of the effects of insulation and wall temperature on heat transfer. The second configuration had several in-cylinder components coated with 1.25 mm (0.050″) layer of zirconia plasma spray -- in particular, piston top, head firedeck and valves. The engine was operated over a matrix of operating points at four engine speeds and several load levels at each speed. The heat flux was measured by thin film thermocouple probes. The data showed that increasing the wall temperature by insulation reduced the heat flux. This reduction was seen both in the peak heat flux value as well as in the time-averaged heat flux. These trends were seen at all of the engine operating conditions. It is concluded that insulation reduces heat transfer, and that this effect should increase the piston work and indicated thermal efficiency.


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    Titel :

    Heat Transfer in a Cooled and an Insulated Diesel Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Tree, Dale R. (Autor:in) / DeWitt, David P. (Autor:in) / Fort, Edward F. (Autor:in) / Kreider, Kenneth G. (Autor:in) / Wahiduzzaman, Syed (Autor:in) / Morel, Thomas (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1989



    Erscheinungsdatum :

    01.02.1989




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Heat transfer in a cooled and an insulated diesel engine

    Morel,T. / Wahiduzzaman,S. / Fort,E.F. et al. | Kraftfahrwesen | 1989


    Capabilities of heat insulated Diesel engine

    Yoshimitsu,T. / Toyama,K / Sato,F. et al. | Kraftfahrwesen | 1982


    Capabilities of Heat Insulated Diesel Engine

    Sato, Fumihide / Yamaguchi, Hiromasa / Toyama, Kosuke et al. | SAE Technical Papers | 1982


    Heat transfer experiments in an insulated diesel

    Morel,T. / Wahiduzzaman,S. / Fort,E.F. et al. | Kraftfahrwesen | 1988


    Heat Transfer Experiments in an Insulated Diesel

    Fort, Edward F. / Wahiduzzaman, Syed / Morel, Thomas | SAE Technical Papers | 1988