Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1993-12-07
1995-01-03
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
188156, 188159, 303 10, 303100, B60T 1374
Patent
active
053780531
ABSTRACT:
A vehicle powered by an electric motor which may be operated as a generator to effect regenerative braking of certain vehicle wheels in combination with individual friction brakes associated with other wheels. A commanded vehicle deceleration is apportioned among the wheels by determining the maximum regenerative braking deceleration achievable by drive wheels, and braking the vehicle occurs solely by regenerative braking so long as the commanded deceleration is less than the determined maximum deceleration. When a commanded deceleration exceeds the determined maximum, the regenerative braking is supplemented with friction braking of the other wheels while the maximum regenerative braking is maintained. The maximum regenerative braking of the certain wheels may be supplemented with additional friction braking of those same certain wheels, but this occurs only if the combined deceleration of the regenerative braking of the certain wheels and the friction braking of the other wheels is inadequate to achieve the commanded deceleration.
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Patient Daniel J.
Phipps Jack R.
Allied-Signal Inc.
Butler Douglas C.
McCormick Jr. Leo H.
Palguta Larry J.
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