Driving force control system for four-wheel drive vehicles

Details Driving force control system for four-wheel drive vehicles Driving force control system for four-wheel drive vehicles

B - Operations, Transporting

60

K

B60K 23/08 (2006.01)

Patent

CA 2341087

There is provided a driving force control system for a four-wheel drive vehicle. An automatic-mode transmitted torque is calculated based on operating conditions of the vehicle. When lock mode-executing conditions including operation of a lock switch by the driver are satisfied, a lock mode in which the engagement forces of the clutches are set to a lock-mode transmitted torque, including a lockable transmitted torque which can lock the front wheels and the rear wheels to each other. Further, the lock-mode transmitted torque is limited depending on a traveling condition of the vehicle such that the lock-mode transmitted torque is held below the lockable transmitted torque. When the automatic-mode transmitted torque is larger than the limited lock-mode transmitted torque during the lock mode, the engagement forces of the clutches are set to the automatic-mode transmitted torques.

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