Pressure 'peaks' in crank end bearings can be flattened in the axial direction by hourglass surface profiling in highly wear resistant bearings. In more wear prone bearings, this same effect can be achieved by the introduction of circumferential microgrooves. A computer program (LOCUS) was written that calculates the maximum pressure, oil flow rate and minimum pressure, oil flow rate and minimum film thickness (among other variables) for bearings under dynamic loading. An actual bearing was simulated with and without profiling. A 26 % reduction in peak pressur was achieved as well as a 11 % increase in oil flow rate. However, the minimum oil film thickness decreased by 67 % indicating that this concept can only be applied to these bearings that do not have critical film thickness limitations.


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    Titel :

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


    Weitere Titelangaben:

    Profilieren der Gleitflaechen zur Verhinderung der Ermuedung an den Enden von Pleuelstangen


    Beteiligte:
    Duarte, D. jun. (Autor:in) / Kaufmann, M. jun. (Autor:in) / Tu, C. (Autor:in)

    Erschienen in:

    SAE-Papers ; Mar ; 1-7


    Erscheinungsdatum :

    1988


    Format / Umfang :

    7 Seiten, 17 Bilder, 2 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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

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


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

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


    Sliding Surface Profiling of Plain Journal Bearings

    Duarte, Durval / Kaufmann, Manfred / Praca, Mario et al. | SAE Technical Papers | 1991


    Innovative ceramic sliding bearings

    Bruggeman, Rick | Online Contents | 2002


    Sliding surface profiling of plain journal bearing

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