Piston rings are large contributors to friction losses in internal combustion engines. To achieve higher engine efficiency, low friction ring packs that can maintain good sealing performance must be designed. To support this effort, simulation tools have been developed to model the performance of piston rings during engine operation. However, the challenge of predicting oil consumption, blow by, and ring pack friction with sufficient accuracy remains. This is mostly due to the complexity of this system. Ring dynamics, deformation, interaction with liner and piston, gas and lubricant flow must all be studied together to make relevant predictions. In this paper, a new curved beam finite element model of piston rings is proposed. Ring structural deformation and contact with the liner are treated on two separate grids. A comparison with ring models in the literature and analytical solutions shows that it can provide accurate results efficiently. The proposed model can serve as a numerical framework to couple ring structural deformation, interaction with liner and piston, and predict oil transport. The new model is used to study conformability of piston rings to distorted bore. Results show that the differences between existing conformability criteria can be explained by the singular behavior of the ring gap region.


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    Titel :

    A Dual Grid Curved Beam Finite Element Model of Piston Rings for Improved Contact Capabilities


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Baelden, Camille (Autor:in) / Tian, Tian (Autor:in)

    Kongress:

    SAE 2014 World Congress & Exhibition ; 2014


    Erschienen in:

    Erscheinungsdatum :

    2014-04-01


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Piston rings

    Stern, N. | Engineering Index Backfile | 1938


    Piston rings

    Steinitz, O. | Engineering Index Backfile | 1938


    Contact Pressure Distribution of Piston Rings -Calculation Based on Piston Ring Contour-

    Okamoto, M. / Sakai, I. / Society of Automotive Engineers | British Library Conference Proceedings | 2001


    Piston rings

    Smith, D.M. | Engineering Index Backfile | 1946


    Piston rings

    Judd, J.A. | Engineering Index Backfile | 1944