Starting from a classification of car transmissions and from the manufacturers requirements, especially for fuel savings, the potential advantages of continuously variables transmissions permitting to associate low engine RPM with high vehicle speed, are shown. The control of the engine, transmission and clutch to reach a given optimum, is explained. Here are given results of simulation or testing of vehicles equipped with a Renault hydrostatic prototype transmission, a 2-mode hydromechanical transmission and a Van Doorne prototype Transmatic. Highway fuel economy trends are quantified in case of substituion of the conventional S.I. engine for Diesel and/or turbocharged engines. (DePo)


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    Titel :

    Continuously variable transmissions for cars with high ratio coverage


    Weitere Titelangaben:

    Stufenlos schaltbares Getriebe fuer Personenkraftwagen mit hohem Uebersetzungsverhaeltnis


    Beteiligte:
    Baudoin, P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1979


    Format / Umfang :

    12 Seiten, 16 Bilder


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch






    Continuously Variable Transmissions for Cars with High Ratio Coverage

    Baudoin,P. / Renault,FR | Kraftfahrwesen | 1979



    Lubrication of continuously variable transmissions

    Kraneburg,P. / Blackburn,J.H. / Mitsui,H. et al. | Kraftfahrwesen | 1998