Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1975-07-10
1976-09-14
Blix, Trygve M.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188181A, 303 10, 303 22R, 303 24R, 303 21A, 303 21F, B60T 804
Patent
active
039803465
ABSTRACT:
An improved anti-locking control system for the wheel brakes of four wheel vehicles having a braking system with dual brake lines each connected to the brakes associated with two wheels, which anti-locking control system is of the type in which the brake pressure is regulated jointly at two wheels by a brake pressure regulating unit connected in one of the brake lines and in which signals which are derived from the rotational behavior of two diagonally opposite wheels of the vehicle are fed to an evaluation circuit where brake pressure control signals are generated for the pressure regulating unit. According to the invention, the two wheel brakes connected to the brake line provided with the pressure regulating unit are the brakes of the diagonally opposite wheels whose rotational behavior is being evaluated or the brakes of the steered wheels of the vehicle; a switching arrangement is provided which alternatingly produces two operating states for the evaluation circuit, i.e., a first operating state in which the pressure is regulated when there is a tendency to lock at one wheel and a second operating state in which the pressure is regulated when there is a tendency to lock at both wheels whose rotational behavior is being evaluated; a normally open brake pressure control valve is connected in the other brake line, i.e., the brake line leading to the other or unregulated wheels; and the pressure control valve is closed when the pressure (P.sub.ST) at the brakes connected to the output of the brake pressure control valve has a given relationship to the pressure (P.sub.R) at the output of the brake pressure regulating unit.
REFERENCES:
patent: 2869687 (1959-01-01), Keim et al.
patent: 3669403 (1972-06-01), Slavin et al.
Blix Trygve M.
Butler Douglas C.
Teldix GmbH
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