Control device for four wheel drive vehicle
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United States of America Patent
Stats
-
Jan 9, 2018
Issued Date -
N/A
app pub date -
May 26, 2015
filing date -
May 29, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A control device for a four wheel drive vehicle. Differential limitation is applied to both of right and left rear wheels, with 2WD_d state being maintained, by executing two wheel control for engaging or half-engaging a first clutch and a second clutch. As the two wheel drive control is executed, a moment that suppresses the rotation speed difference between the right and left rear wheels acts on the right and left rear wheels even in the 2WD_d state. When the rotation speed difference occurs between the right and left rear wheels, a braking force is allowed to act on the vehicle wheel on the high rotation side and a driving force is allowed to act on the vehicle wheel on the low rotation side through the execution of the two wheel drive control so that a stable moment acts on the vehicle without a transition to a 4WD state.
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