EP 1618322 A1 20060125 - HYDRAULIC CIRCUIT FOR CONTROLLING A DRIVE CHAIN
Title (en)
HYDRAULIC CIRCUIT FOR CONTROLLING A DRIVE CHAIN
Title (de)
HYDRAULIKKREIS ZUR STEUERUNG EINES ANTRIEBSSTRANGES
Title (fr)
CIRCUIT HYDRAULIQUE POUR COMMANDER UNE CHAINE CINEMATIQUE
Publication
Application
Priority
- EP 2004001727 W 20040221
- DE 10320524 A 20030430
Abstract (en)
[origin: WO2004097265A1] The invention relates to a hydraulic circuit (50) for controlling a double-clutch gear box comprising to gear groups (52, 54), each group being provided with a separation clutch (K1, K2) and several clutch couplings (60, 62) for engaging and disengaging gears. For each drive group (52, 54), said hydraulic circuit comprises its own hydraulic branch (68, 70) which is connected respectively to a pump (66) by means of a safety valve (72, 74). Each hydraulic branch (68, 70) is provided with a clutch control valve (76, 78) for controlling the associated separation clutch (K1, K2) and with at least one gear-switch control valve (80, 82) for controlling the associated clutch couplings (60, 62). Each safety valve (72, 74) is embodied in the form of a proportional pressure control valve.
IPC 1-7
IPC 8 full level
F16H 61/00 (2006.01); F16H 61/12 (2006.01); F16H 61/28 (2006.01); F16H 63/28 (2006.01)
CPC (source: EP US)
F16H 61/12 (2013.01 - EP US); F16H 61/2807 (2013.01 - EP US); F16H 61/688 (2013.01 - EP US); F16H 63/18 (2013.01 - EP US); F16H 63/28 (2013.01 - EP US); F16H 2061/0253 (2013.01 - EP US); F16H 2061/1204 (2013.01 - EP US); F16H 2061/122 (2013.01 - EP US); F16H 2061/1224 (2013.01 - EP US); F16H 2061/1264 (2013.01 - EP US); F16H 2061/1268 (2013.01 - EP US); F16H 2306/00 (2013.01 - EP US); Y10T 74/19326 (2015.01 - EP US)
Citation (search report)
See references of WO 2004097265A1
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
WO 2004097265 A1 20041111; DE 10320524 A1 20041125; EP 1618322 A1 20060125; US 2006150762 A1 20060713; US 7300375 B2 20071127
DOCDB simple family (application)
EP 2004001727 W 20040221; DE 10320524 A 20030430; EP 04713472 A 20040221; US 25962405 A 20051026