The Instantaneous IMEP method has been used to measure piston and ring assembly friction in a production Chevrolet 1.8 litre L-4 and a 5 litre V-8 engine modified for single-cylinder operation. Friction measurements are reported at different loads and speeds up to 1640 RPM under firing and motoring conditions with various oils and before and after break-in of the oil ring. Oils used were SAE viscosity grades 30, 50 and 30 with a friction modifier.Differences were found between motoring and firing friction, especially on the power and exhaust strokes. These differences diminished at higher speeds and lower loads where lubrication was more hydrodynamic. Differences in response to viscosity and friction modifier changes were noted between the two engines.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effect of Some Lubricant and Engine Variables on Instantaneous Piston and Ring Assembly Friction


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE International Congress and Exposition ; 1984



    Erscheinungsdatum :

    01.02.1984




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Effect of some lubricant and engine variables on instantaneous piston and ring assembly friction

    Uras,H.M. / Patterson,D.J. / University of Michigan,Ann Arbor,US | Kraftfahrwesen | 1984


    Effect of Some Piston Variables on Piston and Ring Assembly Friction

    Uras,M.H. / Patterson,D.J. | Kraftfahrwesen | 1987


    Effect of Some Piston Variables on Piston and Ring Assembly Friction

    Patterson, Donald J. / Uras, H. Mehmet | SAE Technical Papers | 1987


    Measurement of Piston and Ring Assembly Friction Instantaneous IMEP Method

    Patterson, Donald J. / Uras, H. Mehmet | SAE Technical Papers | 1983


    Measurement of Piston and Ring Assembly Friction Instantaneous IMEP Method

    Uras,H.M. / Patterson,D.J. / Univ.of Michigan,Ann Arbor,US | Kraftfahrwesen | 1983