Excellent fuel quality or fuel detergents are required to reduce intake valve deposits in gasoline engines. However, engine oils also have a considerable effect on the deposits.In engine tests the cleanest valves were found with synthetic multigrade or mineral single grade oils, both containing no VI improvers. Popular SAE 10W-40 and 5W-50 oils formed more deposits because they contain VI improvers. Deposit weight correlated directly with oil shear stability which is a measure of the VI improver quality. Both engine oil and gasoline have to be chosen correctly for a clean intake system.


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    Titel :

    Effect of Engine Oil on Intake Valve Deposits


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Niemi, Aapo (Autor:in) / Niskala, Jorma (Autor:in) / Niemi, Markku (Autor:in) / Mikkonen, Seppo (Autor:in)

    Kongress:

    1989 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1989



    Erscheinungsdatum :

    01.09.1989




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Effect of engine oil on intake valve deposits

    Mikkonen,S. / Nieme,A. / Niemi,M. et al. | Kraftfahrwesen | 1989


    Intake valve deposits

    Kraftfahrwesen | 1993


    The effect of engine oils on intake valve deposits and combustion chamber deposits

    Cheng,S.S. / General Motors NAO,US | Kraftfahrwesen | 1993


    Effect of Intake Valve Deposits and Gasoline Composition on S.I. Engine Performance

    Shibata, Gen / Nagaishi, Hatsuo / Oda, Keisuke | SAE Technical Papers | 1992