Patent ID: 9026324
Filing Date: 2015-05-05
Classification: B60K,B60W

Abstract:
1. A control system for a four-wheel drive vehicle in which a main drive shaft of either one of a front shaft and a rear shaft transmits a driving force through a driving force transmission shaft to an auxiliary drive shaft of the other of the front shaft and the rear shaft, a first clutch is provided between the main drive shaft and the driving force transmission shaft, a second clutch is provided between the driving force transmission shaft and the auxiliary drive shaft, and the driving force transmission shaft can be stopped freely, the control system comprising: a front side information recognition unit that recognizes information regarding a road in front of the vehicle; an automatic brake control unit that sets a deceleration indication value on the basis of front side information from the front side information recognition unit and causes automatic braking to be performed; a driving force control unit that controls coupling and release operations of the first and second clutches; and a deceleration correction unit that calculates a deceleration caused by rotational synchronization of the main drive shaft and the driving force transmission shaft and corrects the deceleration indication value of the automatic brake control unit by using the calculated deceleration; wherein the driving force control unit couples the first clutch when the automatic brake control unit causes automatic braking to be performed on the basis of the front side information in the case where the vehicle is not in a state of a four-wheel drive operation.