The study was conducted in order to reduce the power consumption of valve train system. Initially, it was used the numerical simulation tool GT-VTrain, which covered the use of the mapping function of resistive friction power at different engine speeds. Then, it was carried out a comparative analysis of dynamic parameters to ensure smooth operation of the system with regard to wear, valve floating, mechanical components strength and engine performance. The final result showed which versions of spring and valve were the most appropriate in order to reduce power consumption while maintaining the functional parameters of the engine. The studies mentioned above were tested and certified in dynamic test bench and durability tests on dynamometers and vehicles were later carried out.


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    Titel :

    Reduced Friction for a Four Cylinder Two Valve Otto Engine Valve Train


    Weitere Titelangaben:

    Sae Technical Papers



    Kongress:

    SAE Brasil 2011 Congress and Exhibit ; 2011



    Erscheinungsdatum :

    2011-10-04




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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    Roberts,D.C. / Dettlaf,G. / Esso,Abingdon,GB | Kraftfahrwesen | 1993


    The influence of friction modified engine oils on valve train friction

    Roberts, D. C. / Dettlaf, G. / Verein Deutscher Ingenieure | British Library Conference Proceedings | 1993



    Development of Low Friction Valve Train

    Shin, B.-H. / Kim, H.-K. / Choi, K.-H. et al. | British Library Conference Proceedings | 1997