The purpose of this paper is to present a systematic methodology to simplify effectively the design of automatic transmissions by using the concepts of fundamental geared entity and basic gear ratios. An atlas of parallel-connected epicyclic-type automatic transmissions is first enumerated. Next, an effective procedure is developed to synthesize feasible clutching sequences for all the parallel-connected epicyclic gear mechanisms with two fundamental geared entities. Then, the numbers of teeth of gears in each epicyclic gear mechanism are determined by an analytical method. Finally, four alternatives for four-speed automatic transmissions are generated, and the corresponding rotating and band clutches are embodied to the epicyclic gear mechanism to obtain the atlas of four-speed automatic transmissions. The result of this paper shows that three four-speed automatic transmissions can be synthesized from the atlas of parallel-connected epicyclic gear mechanisms with two fundamental geared entities


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    Title :

    Design of parallel-connected epicyclic-type automatic transmissions with two fundamental geared entities


    Contributors:
    Hsu, C-H (author) / Huang, R-H (author)


    Publication date :

    2008-03-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Design of parallel-connected epicyclic-type automatic transmissions with two fundamental geared entities

    Hsu,C.H. / Huang,R.H. / Nat.Sun Yat-Sen Univ.,TW | Automotive engineering | 2008



    Epicyclic gear trains for automotive automatic transmissions

    Hsu,C.H. / Hsu,J.J. / National Sun Yat-Sen Univ.,TW | Automotive engineering | 2000


    Epicyclic gear trains for automotive automatic transmissions

    Hsu, C-H / Hsu, J-J | SAGE Publications | 2000