Front and rear drive power distribution control device for...

Details Front and rear drive power distribution control device for... Front and rear drive power distribution control device for...

2006-06-08

2009-11-03

Morris, Lesley D (Department: 3611)

Motor vehicles

Having four wheels driven

Including separate mechanical assemblies for transmitting...

C701S069000

Reexamination Certificate

active

07610982

ABSTRACT:
A drive power distribution control section calculates an engaging torque of clutch means including an input torque sensitive transfer torque, a steering angle/yaw rate sensitive transfer torque, and a tack-in prevention transfer torque. The input torque sensitive transfer torque is estimated by using respective time constants corresponding to an increasing or decreasing of the engine torque. Also, when the input torque is large, a variation of the input torque sensitive transfer torque is increased. The steering angle/yaw rate sensitive transfer torque is corrected by an yaw moment according to an vehicle slip angular velocity, and an upper limit is set on the variation of the yaw moment per time.

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Extended European Search Report issued in corresponding European Application No. EP 06011843.7 dated Oct. 1, 2008.
Partial European Search Report for EP 06011843, dated Jul. 3, 2008.

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