A detailed investigation has been carried out to understand the effect that soot has on the properties of automotive lubricants. The paper builds on previous work, through testing of different lubricants and increased levels of soot contamination. The objective of the work was to increase the understanding of the wear mechanisms that occur within the contaminated contact zone, to help in future development of a predictive wear model to assist in the valve-train design process. Testing has been carried out using specimens operating under realistic engine conditions, using a reciprocating test-rig specifically designed for this application, where a steel disc is held in a heated bath of oil and a steel ball (replicating a valve train contact) is attached to a reciprocating arm. Detailed analysis of the test specimens has been carried out using scanning electron microscopy (SEM) to identify wear features relating to the proposed wear mechanisms.The results have revealed how varying lubrication conditions changes the wear rate of engine components and determines the wear mechanism that dominates for specific situations. Testing has also shown the positive effects of advanced engine lubricants to reduce the amount of wear produced.


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    Titel :

    Investigation of Soot Contaminated Lubricant Wear Mechanisms


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    GREEN, D.A. (Autor:in) / LEWIS, R. (Autor:in)

    Kongress:

    JSAE/SAE International Fuels & Lubricants Meeting ; 2007



    Erscheinungsdatum :

    2007-07-23




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Investigation of soot contaminated lubricant wear mechanism

    Green,D.A. / Lewis,R. / Univ.of Sheffield,GB | Kraftfahrwesen | 2007


    Wear of valve train components die to soot contaminated lubricant

    Green,D.A. / Lewis,R. / Dwyer-Joyce,R.S. et al. | Kraftfahrwesen | 2006


    Wear of Valve Train Components Due to Soot Contaminated Lubricant

    Green, D. A. / Lewis, R. / Dwyer-Joyce, R. S. | SAE Technical Papers | 2006


    Wear effects and mechanisms of soot-contaminated automotive lubricants

    Green, D.A. / Lewis, R. / Dwyer-Joyce, R.S. | Tema Archiv | 2006


    Contribution of Soot Contaminated Oils to Wear

    Ripple, Dave / Chitoor, K. / Durbha, M. et al. | SAE Technical Papers | 1998