Hydraulic braking system, especially for motor vehicles

Details Hydraulic braking system, especially for motor vehicles Hydraulic braking system, especially for motor vehicles

1996-09-09

1997-12-23

Ballato, Josie

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

30312209, 30312212, 30312243, 303 961, 188 725, B60T 1312, F16D 55224

Patent

active

057000670

ABSTRACT:
A braking system is disclosed that has a manually-actuatable master cylinder having two pressure chambers. A first pressure chamber hydraulically controls a flow control valve through which the pressure medium flows during servo-braking in order to adjust its regulating cross-section to produce a defined dynamic pressure that is applied to a first piston/cylinder arrangement, connected to the flow control valve, of a brake application element to produce a braking force. A second pressure chamber can be connected to a second piston of a brake application element so that a braking force can be applied to the brake application element if the servo-force fails. Also, instead of the second piston/cylinder arrangement, a separate separator piston/cylinder arrangement can be provided that is inserted between the second pressure chamber and the piston/cylinder arrangement. As a result, sufficient braking force is produced both in servo-force braking and if the servo-force fails. Also, an appropriate response by the braking forces to the master cylinder is effected so that there is always good actuating feedback.

REFERENCES:
patent: 4726549 (1988-02-01), Dittner et al.
patent: 4804236 (1989-02-01), Burgdorf et al.
patent: 4900101 (1990-02-01), Becker et al.
patent: 5168963 (1992-12-01), Poncini
European Search Reports, dated Nov. 5, 1996 and Jan. 13, 1997.

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