Recent cold-room studies have shown that the importance of engine oil viscosity is not in controlling engine cranking speed but in absorbing power from the starting engine. Cranking speed itself appears to be merely an index of engine oil viscosity. It is shown that engines may be successfully started at cranking speeds as low as six rpm if the viscosity of the engine oil is suitably low. On the other hand, if the viscosity of the engine oil is too great the engine may start but will not continue to run even at cranking speeds as high as 125 rpm.These findings are important as they indicate that low-temperature starting cannot necessarily be improved by the simple expedient of increasing the starting system capacity. Rather, good low-temperature oil viscosity is required.


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    Titel :

    A COMPARISON OF THE EFFECTS OF CRANKING SPEED AND OIL VISCOSITY ON LOW-TEMPERATURE ENGINE STARTING


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE World Congress & Exhibition ; 1964



    Erscheinungsdatum :

    01.01.1964




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :



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    Caracciolo, F. / McMillan, M. L. | SAE Technical Papers | 1979


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    Mixture strength at cranking cycles of gasoline engine starting

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