This paper presents a global friction model of a diesel engine. The model accounts for the individual contributions of the main components of the mechanical losses and the influence of specific design and operating parameters on the mechanical losses. The main components considered in the model are: the piston-ring assembly, the valve train, the bearings and auxiliaries (injection pump, oil pump and coolant pump). For each of these components, the model was developed based on geometric parameters, operating conditions and the physics governing the friction. The individual models were assembled in a global friction model of a multicylinder diesel engine, and a computer code was developed to simulate the total mechanical losses of the engine. The experimental validation of the model was obtained by comparing the simulated crankshaft's speed variation with the instantaneous speed measured by a shaft encoder. The simulations showed a fairly good agreement with measurements, both for steady state operating conditions and transients.


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    Titel :

    Friction Losses in Multi-Cylinder Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Taraza, Dinu (Autor:in) / Henein, Naeim (Autor:in) / Bryzik, Walter (Autor:in)

    Kongress:

    SAE 2000 World Congress ; 2000



    Erscheinungsdatum :

    06.03.2000




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Review of Power Cylinder Friction for Diesel Engines

    Richardson, D.E. | Online Contents | 2000


    A model of the friction losses in diesel engines

    Livanos,G. / Kyrtatos,N.P. / National Tech.Univ.of Athens,GR | Kraftfahrwesen | 2006


    A Model of the Friction Losses in Diesel Engines

    Livanos, George / Kyrtatos, Nikolaos P. | SAE Technical Papers | 2006


    FRICTIONAL LOSSES IN DIESEL ENGINES

    MILLINGTON, B. W. / HARTLES, E. R. | SAE Technical Papers | 1968