Provided is a driving force control device for a four-wheel-drive vehicle that can evade an occurrence of excessive understeer and oversteer in situations unintended by the driver, by appropriately controlling driving forces to be distributed to sub-drive wheels. The driving force distribution device of the four-wheeled vehicle controls driving force to be distributed to the rear wheels (Wr, Wr) by the clutch (10) for front-and-rear torque distribution so that the wheels (Wf, Wf) are main drive wheels and the rear wheels (Wr, Wr) are sub-drive wheels. The driving force distribution device is adapted to perform control to restrict the upper limit of the four-wheel drive torque based upon an estimated driving force and steering angle of the vehicle, when calculating four-wheel drive torque to be distributed to the rear wheels (Wr, Wr) by the driving force distribution device (10). Thus, it enables to evade an occurrence of an excessive oversteer due to excessively-large controlled variable to the rear wheels Wr, Wr and an excessive understeer due to excessively-small controlled variable in situations unintended by the driver.
DRIVE FORCE CONTROL DEVICE FOR FOUR-WHEEL-DRIVE VEHICLE
VORRICHTUNG ZUR ANTRIEBSKRAFTSTEUERUNG FÜR EIN FAHRZEUG MIT ALLRADANTRIEB
DISPOSITIF DE COMMANDE DE FORCE D'ENTRAÎNEMENT POUR UN VÉHICULE À QUATRE ROUES MOTRICES
2015-09-23
Patent
Electronic Resource
English
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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