Viscosity decrease as a function of the duration of mechanical shearing is described by a mathematical model. Applicability of the model to several different types of service is demonstrated. For automobile engine oil service that shows a viscosity decrease initially, followed by a gradual viscosity increase, the model offers a means of separating the viscosity decrease term from the total viscosity change. The model provides a rational method of comparing shearing in bench tests with shearing in service. It also offers a means for detailed comparisons of the shear stability of different lubricants in a given service.


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    Titel :

    A Mathematical Technique for Comparing Shear Stability in Bench Tests and Service


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Lewis, B. J. (Autor:in) / Marshall, H. T. (Autor:in) / Randall, N. P. (Autor:in) / Rein, S. W. (Autor:in)

    Kongress:

    1977 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1977



    Erscheinungsdatum :

    1977-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A Mathematical Technique for Comparing Shear Stability in Bench Tests and Service

    Rein,S.W. / Randall,N.P. / Marshall,H.T. et al. | Kraftfahrwesen | 1977


    Relationship Between Engine Oil Bench Shear Stability Tests

    Alexander, D. L. / Rein, S. W. | SAE Technical Papers | 1987


    Relationship between engine oil bench shear stability tests

    Alexander,D.L. / Rein,S.W. / Texaco,US | Kraftfahrwesen | 1987


    Predicting the Shear Stability of Multigrade Engine Oils from Bench Tests

    McMillan, M. L. / Stewart, R. M. | SAE Technical Papers | 1975


    Bench Tests

    Oberright, E. A. | SAE Technical Papers | 1962