Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1991-12-30
1993-03-02
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
188181A, 303103, 303106, 303109, B60T 832
Patent
active
051903610
ABSTRACT:
A shift is implemented from the control for elevating the braking force to the control for retaining the braking force when deceleration of the wheel exceeds a first predetermined threshold value when the wheels are braked. The first predetermined threshold value is so set as to become smaller as an assumed road surface friction coefficient .mu. is smaller. The first threshold value is further altered to a larger value by altering the assumed road surface friction coefficient .mu. to a higher one when the period of time required from the start of the control for elevating the braking force to the start of the following control for retaining the braking force is equal to or shorter than a predetermined period of time.
REFERENCES:
patent: 5000281 (1991-03-01), Nobumoto et al.
Nobumoto Kazutoshi
Onaka Toru
Tsuyama Toshiaki
Butler Douglas C.
Mazda Motor Corporation
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