Motor vehicles – With means for detecting wheel slip during vehicle...
Patent
1992-08-07
1993-10-05
Hill, Mitchell J.
Motor vehicles
With means for detecting wheel slip during vehicle...
180233, 180244, 180247, 303 97, 303100, 303103, 303106, 36442602, B60K 2816, B60T 858
Patent
active
052496414
ABSTRACT:
The invention is directed to an arrangement for controlling a braking force applied to each of road wheels of a rear drive vehicle depending upon a braking condition, with a hydraulic braking pressure supplied to each of wheel brake cylinders through pressure control valves respectively. The pressure control valves are controlled by the braking force controller into which output signals of wheel speed sensors are fed. In a first determination unit, it is determined if at least one of the front road wheels is on a road surface of a coefficient of friction lower than a predetermined value, and determined if the front wheel speed of one of the front road wheels has reached to a peak wheel speed. And, in a second determination unit, it is determined if a difference between the front wheel speed and rear wheel speed is less than a predetermined speed. When it is determined that at least one of the front road wheels is on the road surface of the low coefficient of friction and the front wheel speed has reached to the peak wheel speed, and that the difference between the front and rear wheel speeds is less than the predetermined speed, an asynchronous control unit prohibits the braking force controller from synchronously controlling the braking force applied to the front road wheels.
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Aisin Seiki Kabushiki Kaisha
Hill Mitchell J.
LandOfFree
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