This paper describes a detailed evaluation of overhead camshaft valve actuation. The conventional pushrod-operated valve train is compared to direct-acting and rocker-actuated overhead camshaft systems by both analytical and experimental means. The effect of the various methods of valve actuation on valve train weights, forces, and stresses is discussed. It is shown that the principal advantage of overhead camshafts is the increased natural frequency of the valve train. The resulting improved dynamic characteristics of the valve-actuating mechanism make it possible to design camshaft profiles which expand the useful operating range of high-speed engines.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    THE ADVANTAGES OF OVERHEAD CAMSHAFTS–WHAT ARE THEY?


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1968 Automotive Engineering Congress and Exposition ; 1968



    Publication date :

    1968-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Advantages of overhead camshafts -- What are they

    Bakonyi, S.M. | Engineering Index Backfile | 1968


    Cast camshafts

    Engineering Index Backfile | 1936


    Testing camshafts

    Engineering Index Backfile | 1932


    Grinding camshafts

    Engineering Index Backfile | 1930


    Measurement of Camshaft Wear - Wear and Kinematics of Overhead Camshafts

    Purmer,P.D. / van den Berg,W. / Shell Res.,NL | Automotive engineering | 1985