Hydraulic braking system especially for motor vehicles

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

1997-07-28

1998-10-27

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Speed-controlled

With failure responsive means

30312209, 3031154, 303 961, 188345, B60T 1312, F16D 55224

Patent

active

058269533

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.

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