Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1988-02-29
1989-05-23
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
180197, 303114, B60T 844
Patent
active
048324167
ABSTRACT:
The proposed vehicle brake system has a hydraulic brake booster, a master brake cylinder, wheel brakes and a pressure source for operating the brake booster. The vehicle brake system also has an anti-skid device, which comprises an auxiliary cylinder with an auxiliary piston and valve assemblies. In the anti-skid situation, the auxiliary piston is acted upon, controlled by one of the valve assemblies, and it acts counter to the brake booster and thereby lowers the pressure in the master brake cylinder. By stopping the valve assembly that is associated with a wheel threatening to skid, the brake pressure in the associated wheel brake drops. Valve assemblies are also further developed such that by including the valve assembly, drive slip at driven wheels can be limited by means of pressure from the pressure source.
REFERENCES:
patent: 4416347 (1983-11-01), Bertling et al.
patent: 4662687 (1987-05-01), Leiber
patent: 4743075 (1988-05-01), Belart et al.
Kaes Guenter
Stegmaier Alwin
Greigg Edwin E.
Reger Duane A.
Robert & Bosch GmbH
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