In a vehicular parking lock device, supplying a hydraulic pressure from pressure regulation of a line pressure by a linear solenoid valve to a hydraulic brake via a switching valve operated by a first solenoid valve enables a transmission to carry out a shift change. If desired that a parking lock is not operated when an engine stops, the hydraulic pressure stored under pressure in an accumulator is discharged to a drain oil passage by connecting the linear solenoid valve selectively to the drain oil passage by the first solenoid valve, thereby making it possible to prevent the hydraulic pressure stored under pressure in the accumulator from being supplied to a locking oil chamber at the other end of the hydraulic actuator. The first solenoid valve is used for both controlling the operation of the hydraulic brake and discharge of the hydraulic pressure stored under pressure in the accumulator.


    Access

    Download


    Export, share and cite



    Title :

    Vehicular parking lock device


    Contributors:

    Publication date :

    2018-01-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING



    VEHICULAR PARKING LOCK DEVICE

    TACHIBANADA YUYA / MOCHIZUKI TETSUYA / ISHIKAWA YUTAKA et al. | European Patent Office | 2017

    Free access

    VEHICULAR PARKING LOCK CONTROL APPARATUS

    OKUDA KOICHI / YASUDA YUJI / TABATA ATSUSHI et al. | European Patent Office | 2016

    Free access

    VEHICULAR PARKING LOCK CONTROL APPARATUS

    NAKADE YUSUKE / KAWAGUCHI YUSAKU | European Patent Office | 2018

    Free access

    CONTROL DEVICE FOR VEHICULAR PARKING LOCK MECHANISM

    OZAWA KAZUHIRO / TATENO MAKOTO | European Patent Office | 2017

    Free access

    MANUAL RELEASE MECHANISM FOR VEHICULAR PARKING LOCK DEVICE

    TATENO HIROYUKI / TAKAGI KIYONORI / OKUDA KOICHI et al. | European Patent Office | 2017

    Free access