Vehicle braking system having frictional and regenerative braking devices
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
Jul 28, 1998
filing date -
Sep 16, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A vehicle braking system including a frictional braking device for applying a frictional braking torque to each of a plurality of wheels of the vehicle, a regenerative braking device including at least one electric motor for applying a regenerative braking torque to at least one drive wheel of the vehicle, and a total braking torque control device for controlling a total braking torque including one or both of the regenerative braking torque and the frictional braking torque which are applied to each of the wheels. When the total braking torque of at least one of the wheels has exceeded an upper limit corresponding to a friction coefficient of a road surface on which the motor vehicle is running, the total braking torque control device operates to zero the regenerative braking torque of each of the above-indicated at least one wheel and control the frictional braking torque of this wheel while reducing an influence of the zeroing of the regenerative braking torque.
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