The lubrication regimes experienced by piston rings vary from full film hydrodynamic in the mid-stroke positions to mixed or boundary at the ends of the stroke. Full analyses of the mixed lubrication of piston rings have been made, but this work uses a simplified approach to analyse lubrication and friction in a modern automotive ring pack. The ring pack analysed in the work was from a current automotive engine with dimensions 90 mm diameter x 71 mm. The top ring is a barrel faced chrome plated compression ring, the second ring a tapered Napier scraper ring and the oil control ring is in three pieces, two chrome plated steel rails with a spring steel expander. This work makes approach to the determination of mixed friction based on a representation of the Stribeck curve. Predictions for friction show good correlation with test measurements, showing that the simplified analysis is useful and that the simplifications are justified.


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    Titel :

    Analysis of friction in a modern automotive piston ring pack


    Weitere Titelangaben:

    Analyse der Reibung in einer modernen Kolbenring-Anordnung im Automobil


    Beteiligte:
    Radcliffe, C.D. (Autor:in) / Dowson, D. (Autor:in)


    Erscheinungsdatum :

    1995


    Format / Umfang :

    11 Seiten, 17 Bilder, 3 Tabellen, 11 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Friction and Lubrication Analysis of a Piston- Ring Pack

    Jeng, Yeau-Ren | SAE Technical Papers | 1992


    Friction and lubrication analysis of a piston-ring pack

    Jeng,Y.R. / General Motors,US | Kraftfahrwesen | 1992


    Piston Ring Pack Friction and Lubrication Analysis of an Automotive Engine Using a Mixed Lubrication Model

    Sui, P. C. / Ariga, S. / Society of Automotive Engineers | British Library Conference Proceedings | 1993



    Piston ring pack friction and lubrication analysis of an automotive engine using a mixed lubrication model

    Sui,P.C. / Ariga,S. / Southwest Research Inst.,San Antonio,US | Kraftfahrwesen | 1993