Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1997-04-25
1999-04-06
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303 10, 303166, 3031134, 303 962, 3031135, 3031191, 3031154, 303155, B60T 832
Patent
active
058907769
ABSTRACT:
When a driver wants to stop a vehicle quickly, the driver depresses a braking pedal strongly. A stop switch is turned on. The deceleration of the vehicle exceeds a predetermined value. In this case, an electronic control unit ECU actuates a pump to send brake fluid from a master cylinder to a wheel cylinder. Thus, the hydraulic braking pressure applied to the wheel cylinder is increased to a level higher than that obtained by a driver's braking pedal depression. Accordingly, the braking force increases at a speed exceeding a driver's foot braking operation without any further burden on the driver. The braking performance can be improved with a prompt increase of the braking force in response to a strong braking operation. Furthermore, utilizing an increased braking force makes it possible to eliminate an imbalance between wheel braking behaviors.
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Butler Douglas C.
Denso Corporation
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