The high temperature permanent and temporary viscosities of oils run in a diesel injector shear stability test were compared with similar data for two European laboratory engine tests. Low shear rate permanent viscosity losses for oils run in selected European cars were compared with laboratory data. Shear stability as commonly determined by the diesel injector test and low shear rate viscosity measurements does not permit adequate assessment of the shear stability of engine oils. The viscosities measured at high shear rates and high temperatures appear to provide a more useful dimension in the characterization of oils than do standard viscosity measurements. Temporary viscosity losses tend to be larger than permanent viscosity losses. (DePo)


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    Titel :

    Assessment of shear stability methods for european engine oils


    Weitere Titelangaben:

    Bewertung der Scherstabilitaetspruefungen fuer europaeische Motoroele


    Beteiligte:
    Spooren, E.W. (Autor:in) / Rein, S.W. (Autor:in) / Alexander, D.L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1979


    Format / Umfang :

    13 Seiten, 5 Bilder, 12 Tabellen, 9 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Assessment of Shear Stability Methods for European Engine Oils

    Spooren,E.W. / Rein,S.W. / Alexander,D.L. et al. | Kraftfahrwesen | 1979


    Assessment of Shear Stability Methods for European Engine Oils

    Alexander, D. L. / Spooren, E. W. / Rein, S. W. | SAE Technical Papers | 1979


    A Bench Scale Engine Test for Shear Stability of Multigrade Engine Oils

    Talbot, A. F. / Morris, H. I. / Wright, W. A. | SAE Technical Papers | 1973


    European test methods for fuel efficient engine oils

    Roberts,D.C. / Villis,T. / Esso Res.Cent.,Abingdon,GB | Kraftfahrwesen | 1984


    Predicting the Shear Stability of Multigrade Engine Oils from Bench Tests

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