A reciprocating viscometer which was used for determining cold-cranking properties of engine oils was modified so it could be used to predict low-speed, hot-cranking properties of crankcase oils in full-scale engines. Since the current 210 F ASTM D 445 viscosities of multigrade oils fail to predict their hot-cranking properties, there is need for such a unit. A high degree of correlation was obtained between the 210 F viscosities determined with the modified reciprocating viscometer and those determined using a full-scale test engine for a group of V.I. improved oils and a group of commercial premium multigrade crankcase oils. The correlation obtained between the two units for a group of 5W oils containing oiliness agents indicates the viscometer to be satisfactory for screening tests. In general, this viscometer can satisfactorily predict low-speed, hot-cranking properties of oils in full-scale engines quickly and economically.A reciprocating viscometer which was used for determining cold-cranking properties of engine oils was modified so it could be used to predict low-speed, hot-cranking properties of crankcase oils in full-scale engines. Since the current 210 F ASTM D 445 viscosities of multigrade oils fail to predict their hot-cranking properties, there is need for such a unit. A high degree of correlation was obtained between the 210 F viscosities determined with the modified reciprocating viscometer and those determined using a full-scale test engine for a group of V.I. improved oils and a group of commercial premium multigrade crankcase oils. The correlation obtained between the two units for a group of 5W oils containing oiliness agents indicates the viscometer to be satisfactory for screening tests. In general, this viscometer can satisfactorily predict low-speed, hot-cranking properties of oils in full-scale engines quickly and economically.


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    Titel :

    Modified Reciprocating Viscometer Predicts High Temperature Cranking Properties of Engine Oils


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Spohn, C. R. (Autor:in) / Stewart, R. M. (Autor:in)

    Kongress:

    National Fuels and Lubricants and Transportation Meetings ; 1969



    Erscheinungsdatum :

    01.02.1969




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    A Reciprocating Viscometer for Predicting the Low Temperature Cranking Characteristics of Engine Oils

    Stewart, R. M. / Meyer, W. A. P. / Lion, W. D. | SAE Technical Papers | 1965



    Viscometer for Predicting Low-Temperature Pumpability of Engine Oils

    Alexander,D.L. / Rein,S.W. / Texaco,US | Kraftfahrwesen | 1977


    Viscometer for Predicting Low-Temperature Pumpability of Engine Oils

    Alexander, D. L. / Rein, S. W. | SAE Technical Papers | 1977


    Prediction of Engine Cold Cranking Performance of Motor Oils

    Cordell, A. D. / Rein, S. W. | SAE Technical Papers | 1964