Method of controlling the brake pressure in an anti-lock vehicle

Details Method of controlling the brake pressure in an anti-lock vehicle Method of controlling the brake pressure in an anti-lock vehicle

1989-03-23

1990-02-13

Reger, Duane A.

Fluid-pressure and analogous brake systems

Pipeless valves

303DIG4, B60T 864

Patent

active

049000993

ABSTRACT:
In a method of controlling the brake pressure in an anti-lock vehicle brake system (ABS system), wherein the rotational behavior of a braked wheel is measured and the brake pressure is lowered in response to the slip and/or rotational retardation of the wheel if threshold values are exceeded, and is subsequently raised again and then kept constant during a phase of steady pressure, it is provided that the duration (t1H, t2H . . . t5H) of the pressure stability phase is adjusted in response to a comparison of the pressure reduction periods (t1DOWN, t2DOWN . . . ) and/or the pressure build-up periods (t1UP, t2UP . . . ) of the instantaneous control cycle (1,2 . . . 5) with those of at least one preceding control cycle in order to obtain shorter stopping distances.

REFERENCES:
patent: 4673225 (1987-06-01), Kade
patent: 4761741 (1988-08-01), Agarwal et al.
patent: 4800498 (1989-01-01), Matsui et al.
patent: 4842343 (1989-06-01), Akiyoshi et al.

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