Rear wheel braking force control apparatus and control method th

Details Rear wheel braking force control apparatus and control method th Rear wheel braking force control apparatus and control method th

1993-03-22

1994-03-29

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188349, 303100, 303 975, 3031191, 303DIG3, B60T 818

Patent

active

052978613

ABSTRACT:
A first target value is set as an initial value of split point pressure, a master cylinder pressure is set as a second target value of split point pressure in a memory when ABS valves (17, 20, and 23) are operated, thereafter when a sign of locking of the rear wheels is detected, the target value is reduced even further and set in the memory, the target value is maintained for a predetermined time by timer control at every setting of a new target value, and when a braking deceleration generated while the target value is maintained in the memory, a controller (37) controls so that the target value is increased after the completion of braking. When the master cylinder pressure is higher than the target value stored in the memory, proportioning valves (26 and 27) are closed to decrease a ratio of the rear wheel braking force to the front wheel braking force, thereby always achieving appropriate control over the rear wheel braking force allocation.

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patent: 5163742 (1992-11-01), Topfer et al.
patent: 5167441 (1992-12-01), Schonlau et al.
patent: 5180211 (1993-01-01), Wiese et al.

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