The Penn State Microoxidation Tester coupled with gel permeation chromatography and clay column adsorption techniques has been demonstrated to be an effective tool to provide semi-quantitative analysis for automotive crankcase lubricant deterioration. This test simulates engine piston-cylinder zone high-temperature thin-film conditions. Oxidative behavior of a series of ASTM Sequence IIID hot engine test reference oils (with unknown base stocks and additive packages) has been found to be comparable to and consistent with that of a model fluid formulated with a good quality conventionally refined heavy neutral and a simple additive system composed of phenyl alpha napthylamine and zinc dialkyldithiophosphate. Further simplification of the test procedure for evaluating varnish and deposit formation tendencies proves to be an effective aid in discriminating base oils as well as compounded fluids with a minimum of analytical equipment. High temperature evaluations of a number of commercial multigrade engine oils reveal the slight advantage of synthesis over conventional mineral base oils both in terms of oxidation resistance and volatility loss.


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    Titel :

    Microoxidation evaluation of automotive crankcase oils


    Weitere Titelangaben:

    Untersuchung der Mikrooxidation der Oele in Fahrzeugkurbelgehaeusen


    Beteiligte:
    Cho, L.F. (Autor:in) / Klaus, E.E. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1983


    Format / Umfang :

    23 Seiten, 16 Bilder, 2 Tabellen, 8 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Microoxidation Evaluation of Automotive Crankcase Oils

    Klaus, E. E. / Cho, L. F. | SAE Technical Papers | 1983


    Microoxidation evaluation of automotive crankcase oils

    Cho,L.F. / Klaus,E.E. / Pennsylvania State Universitaet,US | Kraftfahrwesen | 1983


    SUBZERO AUTOMOTIVE CRANKCASE OILS

    UPHAM, E. W. / MOUGEY, H. C. | SAE Technical Papers | 1948


    New approach to crankcase oils

    Malone, B.W. / Poitz, H.A. / Ryan, J.G. | Engineering Index Backfile | 1959


    A NEW APPROACH TO CRANKCASE OILS

    MALONE, B. W. / POITZ, H. A. / RYAN, J. G. | SAE Technical Papers | 1959