EP 1073572 A1 20010207 - MASTER CYLINDER WITH IMPROVED EMERGENCY BRAKING FUNCTION
Title (en)
MASTER CYLINDER WITH IMPROVED EMERGENCY BRAKING FUNCTION
Title (de)
HAUPTZYLINDER MIT VERBESSERTER NOTBREMSFUNKTION
Title (fr)
MAITRE-CYLINDRE A FONCTION DE FREINAGE DE SECOURS AMELIOREE
Publication
Application
Priority
- DE 19819228 A 19980429
- EP 9902687 W 19990421
Abstract (en)
[origin: DE19819228A1] The invention relates to a master-cylinder (10) for a hydraulic brake system, comprising a housing (18) having a bore (20) in which a pressure piston (22) is guided which is mechanically joined to a rod-shaped actuating member (26) for the transmission of an input force onto the pressure piston (22). On its one side the pressure piston (22) in the bore (20) defines a pressure chamber (28) and on its other, opposite side which faces the actuating member (26) it defines a compensating chamber (30). The pressure piston (22) has a hydraulically active surface A and the actuating member (26) a hydraulically active surface B < A. To raise the pressure multiplication of the master cylinder (10) when additional brake pressure is required, a device (50) connects the pressure chamber (28) with the compensating chamber (30) such that a fluid is able to circulate when a predetermined pressure increase gradient in the pressure chamber (28) is exceeded, so that the pressure multiplication of the master cylinder (10) is increased by a factor A/B.
IPC 1-7
IPC 8 full level
B60T 8/32 (2006.01); B60T 13/68 (2006.01)
CPC (source: EP)
B60T 8/3275 (2013.01); B60T 13/686 (2013.01)
Citation (search report)
See references of WO 9955570A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19819228 A1 19991111; EP 1073572 A1 20010207; WO 9955570 A1 19991104
DOCDB simple family (application)
DE 19819228 A 19980429; EP 9902687 W 19990421; EP 99920727 A 19990421