A black box model for a split-power CVT is presented. The CVT can be run in two modes, using two clutches to perform the mode shift. By combining matching two-mode CVTs, the model can be extended to include an arbitrary number of modes. The planetary gear arrangement in the CVT is described by a set of basic speed ratios. For any configuration, there are restrictions on the basic speed ratios to obtain a useful two-mode transmission. The model is used to determine permitted values of the basic speed ratios for a general CVT, containing a planetary gear arrangement with an arbitrary number of shafts. Application examples are shown. The results presented can be used for developing CVT concepts with several modes, as efficient, jerk-free automatic transmissions for heavy vehicles.


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    Title :

    Continuously variable spoit-power transmissions - conditions for a mode shift


    Additional title:

    Stufenloses Getriebe mit Kraftteilung. Bedingungen für den Verstellungsmodus


    Contributors:

    Published in:

    Publication date :

    1993


    Size :

    12 Seiten, 23 Bilder, 10 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Continuously Variable Split-Power Transmissions-Conditions for a Mode Shift

    Mattsson, P. / SAE | British Library Conference Proceedings | 1993



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