In spite of being a popular topic in technical publications, scuffing between piston ring face and cylinder liner is an extremely unpredictable and hard-to-reproduce phenomenon that significantly decreases engine performance. This paper will discuss results of metallurgical and metrological (post-mortem) examinations of the scuffing between hard and soft cylinder liners and different piston ring coatings after field, engine and bench testing.Detailed metallurgical analysis describes the lubricity mechanism between various piston ring coatings and iron cylinder liner at different temperatures with and without oil. The paper will explain the origin of the scuffing through lack of or inadequate lubrication at top dead center, particularly for hardened iron heavy-duty diesel cylinder liners.The mechanism of the scuffing origin and subsequent catastrophic seizure during lab testing with Falex and LS9 machines were evaluated through coefficient of friction and acoustic emission measurements. To simulate the same scuffing mechanism between piston ring and cylinder liner after field usage and accelerated lab testing, special testing methodology and measurement techniques were developed.The paper will provide the data from tribological testing of the conventional and new piston ring coatings against hard and soft cylinder liners at different temperatures with and without oil. A new type of piston ring coating will be described that decreases the scuffing phenomenon appearance.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Piston Ring Cylinder Liner Scuffing Phenomenon: Investigation, Simulation and Prevention


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1999



    Publication date :

    1999-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Piston ring cylinder liner scuffing phenomenon: investigation, simulation and prevention

    Shuster,M.M. / Stong,T. / Deis,M.C. et al. | Automotive engineering | 1999


    Piston Ring Cylinder Liner Scuffing Phenomenon: Investigation, Simulation and Prevention

    Shuster, M. M. / Stong, T. / Deis, M. C. et al. | British Library Conference Proceedings | 1999


    Piston Ring Cylinder Liner Scuffing Phenomenon Studies Using Acoustic Emission Technique

    Burke, D. / Combs, D. / Karrip, K. et al. | SAE Technical Papers | 2000


    Piston ring cylinder liner scuffing phenomenon studies using acoustic emission techniques

    Shuster,M. / Combs,D. / Karrip,K. et al. | Automotive engineering | 2000


    Piston ring scuffing

    Murray,E.J. / Hepworth and Grandage,Bradford,GB | Automotive engineering | 1977