A double cavity half-toroidal CVT has two variators, which gives a hint of a new four-wheel drive without a centre differential gear unit by applying each of them to drive front and rear drive shafts independently. Torque re-circulation at cornering or different tire radii between front and rear tire is avoided by compensating the speed ratio of variator. The controller adjusts the attitude angle of power roller of the front variator against the rear by measuring the steering angle at cornering. This paper describes the speed ratio control system of the 4WD-CVT with speed ratio range of 1:8.7 and test results of vehicle motion mounted on a 3.2L RV.


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    Title :

    Speed ratio control of a parallel layout double cavity half-toroidal CVT for four-wheel drive


    Additional title:

    Regelung des Drehzahlverhältnisses bei einem Halb-Toroid-CVT für einen Allradantrieb


    Contributors:
    Tanaka, H. (author)

    Published in:

    JSAE Review ; 23 , 2 ; 213-217


    Publication date :

    2002


    Size :

    5 Seiten, 11 Bilder, 1 Tabelle, 4 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Speed ratio control of a parallel layout double cavity half-toroidal CVT for four-wheel drive

    Tanaka,H. / Yokohama National Univ.,JP | Automotive engineering | 2002




    Torque - Distribution control by a double-cavity half-toroidal CVT for four wheel driveline

    Sato, Y. / Tanaka, H. / International Federation of Automatic Control | British Library Conference Proceedings | 1997