The viscosity of automotive lubricants containing polymers decreases temporarily in the oil films of sliding parts with the increase in shear rate. This decrease sometimes causes surface damages such as bearing seizure and gear pitting. This paper describes the effect of polymers and base oils on viscosity under high shear rate conditions. The viscometer was newly developed to evaluate the viscosity at high shear rates. Shear rate can vary between 105 sec-1 and 106 sec-1. By using the viscometer, the effects of various factors such as polymer type, molecular weight, polar group and concentration on shear viscosity were investigated. The effects of polymer solubility and molecular weight distribution of base oils were also investigated.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experimental Study on Viscosity-Shear Characteristics of Lubricating Oils


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    1995-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Experimental study on viscosity-shear characteristics of lubricating oils

    Suzuki,Y. / Mitsui,J. / Shiomi,M. et al. | Kraftfahrwesen | 1995


    Extended Shear Stability of Viscosity Index Improvers in Lubricating Oils

    Boffa, Alexander / Sims, Carrie B. / Sztenderowicz, Mark et al. | SAE Technical Papers | 2014


    Viscosity index improvers for lubricating oils

    Velichkova,R. / Tencheva,V. / Alexandrov,V. et al. | Kraftfahrwesen | 1990


    VISCOSITY AND THE CONRADSON CARBON-RESIDUES OF LUBRICATING OILS

    Burke, George W. | SAE Technical Papers | 1926


    Lubricating oils

    Online Contents | 1997