EP 1853469 A1 20071114 - BRAKING SYSTEM FOR MOTOR VEHICLES
Title (en)
BRAKING SYSTEM FOR MOTOR VEHICLES
Title (de)
BREMSANLAGE FÜR KRAFTFAHRZEUGE
Title (fr)
SYSTEME DE FREINAGE POUR VEHICULES AUTOMOBILES
Publication
Application
Priority
- EP 2006050956 W 20060215
- DE 102005007448 A 20050218
Abstract (en)
[origin: WO2006087338A1] The invention relates to a braking system comprising: a master cylinder (1) and a master cylinder housing (20), to which wheel-brake cylinders can be connected; a first piston (2), which is coupled to a brake pedal (3) via a pressure rod (34) that transmits actuating forces; a second piston (4), which is used to actuate the master cylinder (1); a third piston (5), which can be hydraulically actuated by the first piston (2); at least one elastic element (6, 7), which forms a pedal travel simulator and which during the brake-by-wire mode gives the vehicle driver a comforting pedal sensitivity; elements for coupling the displacement of the first (2) and the third piston (5); an intermediate chamber (11) that can be subjected to a hydraulic pressure, the influence of the latter causing a hydraulic force to act on the second (4) and third piston (5); and an electrically controlled pressure-provision module (9), which permits the intermediate chamber (11) to be filled with hydraulic fluid and to be evacuated. The aim of the invention is to assist the actuating force even when the electronic controller or the electric energy supply fails. To achieve this, the system is equipped with a fourth piston (8), which can be subjected to two opposing forces by means of the elastic element (6, 7) on the input side and the hydraulic pressure in the intermediate chamber (11) on the output side, and elements (14,19,15) that allow the pressure-provision module (9), in addition to being electrically controlled, to be controlled in accordance with the position of the fourth piston (8), obtained by the aforementioned exertion of forces.
IPC 8 full level
B60T 8/40 (2006.01); B60T 13/14 (2006.01)
CPC (source: EP KR US)
B60T 8/40 (2013.01 - KR); B60T 8/4077 (2013.01 - EP US); B60T 13/14 (2013.01 - KR); B60T 13/146 (2013.01 - EP US)
Citation (search report)
See references of WO 2006087338A1
Designated contracting state (EPC)
DE FR HU IT
DOCDB simple family (publication)
WO 2006087338 A1 20060824; CN 100569566 C 20091216; CN 101124111 A 20080213; EP 1853469 A1 20071114; JP 2008529892 A 20080807; KR 20070102715 A 20071019; US 2008265665 A1 20081030
DOCDB simple family (application)
EP 2006050956 W 20060215; CN 200680005468 A 20060215; EP 06708283 A 20060215; JP 2007555601 A 20060215; KR 20077018935 A 20070817; US 88415706 A 20060215