Anti-skid control system for motor vehicle

Details Anti-skid control system for motor vehicle Anti-skid control system for motor vehicle

1986-07-30

1988-05-03

Kashnikow, Andres

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303106, 303109, 364426, B60T 870, B60T 868

Patent

active

047415800

ABSTRACT:
In an anti-skid control system for a motor vehicle, brake fluid pressure reduction-control mode and brake fluid pressure buildup-control mode occurs cyclically; in the reduction-control mode, reduction of the brake fluid pressure is started on the basis of detection of an abrupt drop in wheel speed which occurs when the wheel is braked; and in buildup-control mode, a valve is repetitively opened and closed so that brake fluid pressure buildup and holding operations are performed alternatley and repetitively, whereby the brake fluid pressure is caused to build up gradually. The length of time period for the first buildup operation in the buildup-control mode is determined on the basis of variation in the wheel speed occurring between a low peak point and a high peak point; and the length of time period for at least one of each pressure holding operation and each of the second and succeeding pressure buildup operations in the abovementioned buildup-control mode, is determined on the basis of variation in the wheel speed occurring immediately before the pressure holding or buildup operation is started.

REFERENCES:
patent: 4006942 (1977-02-01), Saito
patent: 4209203 (1980-06-01), Brearley
patent: 4270810 (1981-06-01), Ruhnau et al.
patent: 4395761 (1983-07-01), Sato et al.
patent: 4585280 (1986-04-01), Leiber

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