Metal V-belt type CVT (Continuously Variable Transmissions) provide an excellent fuel consumption and drivability. Therefore the CVT have received much attention. Metal V-belt type CVT have been installed into many automobiles in recent years. In Metal V-belt type CVT, an elastic deformation of blocks determines the shifting speed and the pulley thrusts at transitional state. Both driving and driven pulley thrusts were calculated by considering the forces acting on blocks at a pulley entrance, which agreed with the experimental results at not only steady state but also transitional state. The frictional performance of CVT fluids and the frictional characteristics between blocks and a pulley were evaluated by applying the mean coefficient of friction as a friction parameter. It was found from the experiments that the estimated coefficient of friction of CVT fluids was not constant with respect to operating conditions. lt changed due to relative sliding speed between blocks and the pulley, sliding direction and normal pressure acting on V-surface of the block.


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    Titel :

    A study on a metal pushing V-belt type CVT - a novel approach to characterize the friction between blocks and a pulley, and shifting mechanisms


    Weitere Titelangaben:

    Eine Studie zu einem Metall-Treibriemen - ein neuartiger Ansatz zur Beschreibung der Reibung zwischen Blöcken, Riemenscheibe und Verstellmechanismus


    Beteiligte:
    Kataoka, R. (Autor:in) / Okubo, K. (Autor:in) / Fujii, T. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    11 Seiten, 26 Bilder, 13 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch







    A Study of a Metal Pushing V-Belt Type CVT-Part 1: Relation Between Transmitted Torque and Pulley Thrust

    Kanehara, Shigeru / Kurokawa, Takemasa / Fujii, Toru | SAE Technical Papers | 1993


    Accessory Drive Belt/Pulley Friction Test

    Meckstroth, Richard J. | SAE Technical Papers | 1998