Driving force control device for four-wheel-drive vehicle
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United States of America Patent
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-
Mar 31, 2015
Grant Date -
Nov 14, 2013
app pub date -
Jan 20, 2012
filing date -
Jan 27, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A driving force control device for a four-wheel-drive vehicle performs, by controlling the driving force that is allocated to the rear wheels by a front and rear torque allocation clutch that is arranged between a propeller shaft and a rear diff, the control of setting front wheels as primary drive wheels and rear wheels as auxiliary drive wheels. A control is performed to disable the allocation of driving force to the rear wheels by disengaging the front and rear torque allocation clutch, when the state that the difference in wheel speed between the left and right rear wheels is equal to or more than 80 km continues for 0.1 sec or longer in the state that the vehicle body speed is equal to or less than 120 km.
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