EP 1749146 A1 20070207 - CAMSHAFT ADJUSTER
Title (en)
CAMSHAFT ADJUSTER
Title (de)
NOCKENWELLENVERSTELLER
Title (fr)
DISPOSITIF DE REGLAGE D'ARBRE A CAMES
Publication
Application
Priority
- EP 2005004849 W 20050504
- DE 102004025215 A 20040522
Abstract (en)
[origin: WO2005113943A1] The invention relates to a camshaft adjuster, for the relative angular adjustment of a camshaft with relation to a driving crankshaft, comprising a hydraulically-operated adjuster device with chambers, into which and from which a hydraulic fluid may be alternately introduced or drained through pressure medium channels specific for the chambers to adjust the angle, and a control valve through which the hydraulic fluid supplied by a pump may be introduced into the pressure medium channels or drained from the pressure medium channels into a tank, whereby working connections (A) and (B), leading to the pressure medium channels, a pressure connector (P), coupled to the pump and a drain connector (T), coupled to the tank, are provided on the valve body of the control valve. Said working connections (A) and (B) may be selectively coupled to the pressure connector (P), or the drain connector (T) depending on the desired angle adjustment, by means of a valve piston, the displacement of which is controlled by a remote push- or pull-type solenoid, arranged outside the camshaft, whereby the fluid distribution chamber in the control valve (1, 20, 26, 34) is embodied such that the hydraulic fluid acts on essentially opposed surfaces of the valve piston (4, 22, 28, 36) such that local and essentially opposed forces (Fp1, Fp2) act on said valve piston (4, 22, 28, 36).
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/344 (2006.01)
CPC (source: EP US)
F01L 1/34 (2013.01 - EP US); F01L 1/3442 (2013.01 - EP US); F01L 2001/34426 (2013.01 - EP US)
Citation (search report)
See references of WO 2005113943A1
Designated contracting state (EPC)
DE FR HU IT
DOCDB simple family (publication)
WO 2005113943 A1 20051201; DE 102004025215 A1 20051208; DE 502005011305 D1 20110609; EP 1749146 A1 20070207; EP 1749146 B1 20110427; US 2007169730 A1 20070726
DOCDB simple family (application)
EP 2005004849 W 20050504; DE 102004025215 A 20040522; DE 502005011305 T 20050504; EP 05737740 A 20050504; US 56928405 A 20050504