EP 1339953 A1 20030903 - DEVICE FOR ADJUSTING THE ANGLE OF ROTATION OF A CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE RELATIVE TO A DRIVE WHEEL
Title (en)
DEVICE FOR ADJUSTING THE ANGLE OF ROTATION OF A CAMSHAFT OF AN INTERNAL COMBUSTION ENGINE RELATIVE TO A DRIVE WHEEL
Title (de)
VORRICHTUNG ZUR RELATIVEN DREHWINKELVERSTELLUNG EINER NOCKENWELLE EINER BRENNKRAFTMASCHINE ZU EINEM ANTRIEBSRAD
Title (fr)
DISPOSITIF DE REGLAGE DE L'ANGLE DE ROTATION D'UN ARBRE A CAMES DE MOTEUR A COMBUSTION INTERNE PAR RAPPORT A UN PIGNON D'ENTREE
Publication
Application
Priority
- DE 10058707 A 20001125
- EP 0112802 W 20011106
Abstract (en)
[origin: WO0242614A1] The invention relates to a device for adjusting the angle of rotation of a camshaft of an internal combustion engine relative to a drive wheel. Said device comprises an inner part (4) that is linked with the camshaft in a rotationally fixed manner and that has at least substantially radially extending webs or blades (6a to 6e). A driven cellular wheel (10) is provided with a plurality of cells distributed across its periphery and delimited by webs (12a to 12e). Said cells are subdivided into two respective pressure compartments (22a to 22e and 24a to 24e) by the webs or blades (6a to 6e) of the inner part (4) that are guided inside said cells in an angularly mobile manner. When the pressure compartments are hydraulically pressurized or depressurized via control lines, the camshaft can be rotated between two end positions relative to the cellular wheel (10) by way of the webs or blades. Sealing elements (40) are disposed on the free front face (36) of the webs or blades and seal the pressure compartments defined by said webs or blades. The device is further characterized in that the front face (36) of the webs or blades (6a to 6e) is provided with recesses (38) in which sealing bodies (40) are disposed that are forced against an internal wall (42) of the cellular wheel (10) by a hydraulically applied force. The sealing bodies are configured as rollers (40) that are received in recesses (38) with a certain assembly clearance. Said rollers (40), during operation of the adjustment unit (5), establish a linear contact (LK1, LK1') with the internal wall (42) of the cellular wheel (10) and a linear contact (LK2, LK2') with the side walls (44, 44') of the recesses (40), thereby sealing the pressure compartments.
IPC 1-7
IPC 8 full level
F01L 1/34 (2006.01); F01L 1/344 (2006.01)
CPC (source: EP US)
F01L 1/3442 (2013.01 - EP US); F01L 2001/34479 (2013.01 - EP US)
Citation (search report)
See references of WO 0242614A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0242614 A1 20020530; DE 10058707 A1 20020613; DE 10058707 C2 20031016; DE 50110959 D1 20061019; EP 1339953 A1 20030903; EP 1339953 B1 20060906; JP 2004514819 A 20040520; US 2003127065 A1 20030710; US 6679208 B2 20040120
DOCDB simple family (application)
EP 0112802 W 20011106; DE 10058707 A 20001125; DE 50110959 T 20011106; EP 01997625 A 20011106; JP 2002544519 A 20011106; US 22194902 A 20020918