The present invention ensures responsiveness of torque transmission to auxiliary drive wheels relative to an accelerator depressing operation when a vehicle starts off again from a stopped state.Either left and right front wheels (6, 7) or left and right rear wheels (14, 15) are configured as main drive wheels, and the other of the wheels are configured as auxiliary drive wheels connected via an electronic control coupling (10). When the vehicle starts off due to an accelerator depressing operation, the electronic control coupling (10) is engaged, whereby drive torque from an engine (1) is distributed to the main drive wheels and the auxiliary drive wheels. In this method for controlling a clutch of a four-wheel-drive engine-powered vehicle, when the vehicle changes over from a traveling state to a stopped state while remaining in a travel shift position (D position, R position), a control is performed to apply initial torque Tr1, Tr2 as an engagement torque control of the electronic control coupling (10) while the vehicle is stopped. A magnitude of the initial torque Tr1, Tr2 is set to a magnitude that is necessary for maintaining a drive-system torsion state by torque transmitted to an auxiliary-drive-wheel drive system before the vehicle is stopped.


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    Title :

    FOUR-WHEEL DRIVE VEHICLE CLUTCH CONTROL METHOD AND CLUTCH CONTROL DEVICE


    Additional title:

    KUPPLUNGSSTEUERVERFAHREN FÜR EIN VIERRÄDRIGES FAHRZEUG UND KUPPLUNGSSTEUERVORRICHTUNG
    PROCÉDÉ DE COMMANDE D'EMBRAYAGE DE VÉHICULE À QUATRE ROUES MOTRICES ET DISPOSITIF DE COMMANDE D'EMBRAYAGE


    Contributors:

    Publication date :

    2020-02-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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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