EP 1937534 A1 20080702 - SERVO DRIVE FOR POWER ASSISTED STEERING
Title (en)
SERVO DRIVE FOR POWER ASSISTED STEERING
Title (de)
SERVOANTRIEB FÜR SERVOLENKUNG
Title (fr)
SERVOCOMMANDE POUR DIRECTION ASSISTEE
Publication
Application
Priority
- EP 2006009873 W 20061019
- DE 102005049959 A 20051019
Abstract (en)
[origin: WO2007045397A1] The invention relates to a servo drive consisting of a hydraulic cylinder comprising a piston (30) that is mounted in said cylinder and that delimits two working chambers (31, 32). Relief lines (26, 27), which are connected to the working chambers (31, 32) via control orifices (39, 40), aid the definition of the right and left end positions of the piston (30). The control orifices (39, 40) are exposed by the piston (30) in its respective end positions, thus relieving the pressure in the active working chamber. An end stop, which is predetermined by the position of the control orifices (39, 40) is thus formed by the pressure relief that occurs at the relevant location in the working chamber. This measure relieves the pressure in the hydraulic pump (16), in particular in the end stop positions.
IPC 8 full level
CPC (source: EP US)
B62D 5/061 (2013.01 - EP US); B62D 5/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2007045397A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005049959 A1 20070426; EP 1937534 A1 20080702; US 2009025381 A1 20090129; WO 2007045397 A1 20070426
DOCDB simple family (application)
DE 102005049959 A 20051019; EP 06828810 A 20061019; EP 2006009873 W 20061019; US 9078606 A 20061019