Process and circuit configuration for controlling a brake system

Details Process and circuit configuration for controlling a brake system Process and circuit configuration for controlling a brake system

1989-03-15

1990-06-05

Kashnikow, Andres

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303104, 605471, B60T 858, B60T 860

Patent

active

049308459

ABSTRACT:
A control system and method for a brake system with anti-locking and/or traction slip control and sequential brake pressure modulation. A modulator pressure pattern is formed in a circuit (33) by measuring and evaluating variables determining the pressure in the control chamber of chambers (21) of a brake pressure modulator (4). The modulator pressure pattern represents, by approximation, the course of pressure in the modulator (4). This modulator pressure pattern is considered in the brake pressure control, that is in determining the excitation periods of the multi-way valves (13-16, 22, 23, 25) determining the pressure in a modulator chamber (21) of the brake pressure modulator (4) and in the wheel brakes (9-12). The pressure pattern is formed by integration of the valve excitation periods of the pressure increase and pressure decrease characteristics of the modulator (4) under consideration or of the entire system.

REFERENCES:
patent: 4512615 (1985-04-01), Kita et al.
patent: 4644453 (1987-05-01), Kade et al.
patent: 4662687 (1987-05-01), Leiber
patent: 4726549 (1988-02-01), Dittner et al.
patent: 4824182 (1989-04-01), Steffes et al.
patent: 4836618 (1989-06-01), Wakata et al.

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