Hitachi, Ltd.

Nissan Motor Company Limited

Tomoaki Fujibayashi

Yoshiyuki Fukuda

Sunao Hano

Masahiro Nakamizo

Hideyuki Arai

A driving force distribution control device for a four wheel drive vehicle having a mechanism that distributes the torque of an engine, which is transmitted to a main drive wheel, to a secondary drive wheel determines a first torque to be distributed to the secondary drive wheel on the basis of the engine torque, and corrects the determined first torque on the basis of a yaw rate deviation between a target yaw rate and an actual yaw rate of the vehicle. When an absolute value of the yaw rate deviation is equal to or greater than a predetermined value, the mechanism is controlled on the basis of the corrected torque.

Driving force distribution control method and device for four wheel drive vehicle

A brake control apparatus includes a vehicle sensor to sense a vehicle condition, and a control unit to start a hill hold control to hold a vehicle in a stop state by a braking force produced by a brake actuator even after an end of the driver's braking operation, in accordance with a hill hold control start adjustment parameter determined from the sensed vehicle condition. The parameter may be a variable indicative of a gradient of a road.

Growing community of inventors

Commerce Township, MI, United States of America

Tomoaki Fujibayashi