New technologies for engine valve springs became necessary to meet car manufacturers' increasing requirements for a reduction of fuel consumption. The valve spring design influences fuel consumption through the required spring loads and installation heights. Therefore increased fatigue strength as well as optimized design were the target of investigations.A CrSi alloyed wire increases the fatigue strength as long as the specific requirements of high-tensile materials are considered. Furthermore non-cylindrical spring contours and ovate wire cross sections are able to reduce spring loads and installation heights. At the same time minimum failure rates are ensured.


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    Titel :

    New Technologies for Engine Valve Springs


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Congress & Exposition ; 1993



    Erscheinungsdatum :

    01.03.1993




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    New technologies for engine valve springs

    Muhr,T.H. / Muhr und Bender,DE | Kraftfahrwesen | 1993


    Valve springs

    Dawtrey, L.H. | Engineering Index Backfile | 1941



    Hardening valve springs

    Zimmerli, F.P. | Engineering Index Backfile | 1941


    Helical valve springs

    Dick, J. | Engineering Index Backfile | 1938