Master cylinder for a vehicle hydraulic braking system

Details Master cylinder for a vehicle hydraulic braking system Master cylinder for a vehicle hydraulic braking system

1998-11-19

1999-10-26

Ryznic, John E.

Power plants

Pressure fluid source and motor

Pulsator

B60T 1108, F15B 704

Patent

active

059707100

ABSTRACT:
A master cylinder (10) for a vehicle hydraulic braking system (12) has a housing (18) with a bore (20) formed therein. A piston (22) is guided in a sealing and displaceable manner in the bore (20) and is mechanically connected to a rod-like actuating element (26), by means of which an input force (F) can be transmitted to the piston (22) for pressure conversion. In the bore (20), the piston (22) bounds a pressure chamber (28) and a replenishing chamber (30) arranged on the actuating element side, and has a hydraulically active area (A). In order selectively to increase the pressure intensification of the master cylinder (10), a device (50) is provided which selectively provides a fluid connection between the pressure chamber (28) and the replenishing chamber (30). In the last-mentioned state, on account of the hydraulically active area (B) of the actuating element (26) being smaller than the hydraulically active area (A) of the piston (22), the pressure intensification of the master cylinder (10) is increased by the factor A/B.

REFERENCES:
patent: 4078385 (1978-03-01), Zabadneh
patent: 4582365 (1986-04-01), Belart
patent: 4643489 (1987-02-01), Reinartz et al.
patent: 4660898 (1987-04-01), Steffes
patent: 4703978 (1987-11-01), Belart et al.
patent: 5609399 (1997-03-01), Feigel et al.

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