In a non-forward range, the same gear position as a forward first gear position is established in a stepped transmission. A hydraulic controller includes a second linear solenoid valve and third linear solenoid valve that respectively supply hydraulic pressure to a second clutch and first brake, and a selector valve that is provided in an oil passage upstream of the second and third linear solenoid valves and that switches between a state where hydraulic pressure is supplied to the oil passage and a state where supply of hydraulic pressure is cut off. When the non-forward range is set or when a vehicle is moving backward, the selector valve cuts off supply of hydraulic pressure to the oil passage. Thus, when there is a failure in the second or third linear solenoid valve, it is possible to suitably establish a gear position wherein the vehicle is not allowed to move backward.


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    Titel :

    Automatic transmission for vehicle


    Beteiligte:
    FUJII KOTA (Autor:in) / OKUDA KOICHI (Autor:in) / TABATA ATSUSHI (Autor:in) / SUZUKI HARUHISA (Autor:in) / MATSUBARA TOORU (Autor:in) / NODA KAZUYUKI (Autor:in) / HYODO YOSHIMITSU (Autor:in) / TANAKA KOUSUKE (Autor:in)

    Erscheinungsdatum :

    25.12.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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