Several cases of rod bearing shells assembled in highly loaded engines have been reported to show premature wear of the sliding surface, more specifically the electroplated lead-tin overlay.To understand these phenomena and overcome such occurrences, an analytical method has been developed to simulate the operation of specially designed journal bearings featuring circumferential profiling of the sliding surface. The resulting computer program solves the Reynolds equation taking into account a non-circular bearing surface, thus allowing for a customized design which extends operational component life through minimum oil film thickness (MOFT) increase and peak oil film pressure (POFP) and bearing back temperature (BBT) reduction. Theoretical results show an effective way to prevent premature wear.The geometric aspects drawn from those investigations were introduced in the manufacturing of bearing shells provided with relieves, which, after being tested in automotive engines, proved to enhance their operation, granting more reliability to the engines.


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    Titel :

    Sliding Surface Profiling of Plain Journal Bearings


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Duarte, Durval (Autor:in) / Kaufmann, Manfred (Autor:in) / Praca, Mario (Autor:in) / Filho, Oswaldo Urbani (Autor:in) / Zottin, Walter (Autor:in)

    Kongress:

    International Congress & Exposition ; 1991



    Erscheinungsdatum :

    1991-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Sliding surface profiling of plain journal bearing

    Duarte,D. / Kaufmann,J.M. / Praca,M. et al. | Kraftfahrwesen | 1991


    Railroad car journal plain bearings

    Engineering Index Backfile | 1959


    Sliding surface profiling for fatigue prevention in big end con-rod bearings

    Duarte,D. / Kaufmann,M. / Tu,C. et al. | Kraftfahrwesen | 1988


    Plain bearings

    Engineering Index Backfile | 1947


    Sliding Surface Profiling for Fatigue Prevention in Big End Con-Rod Bearings

    Tu, Carlos / Júnior, Durval Duarte / Júnior, Manfred Kaufmann | SAE Technical Papers | 1988