EP 2504534 A1 20121003 - VALVE PHASING DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (en)
VALVE PHASING DEVICE FOR INTERNAL COMBUSTION ENGINE
Title (de)
VORRICHTUNG ZUR VARIABLEN EINSTELLUNG DER STEUERZEITEN VON GASWECHSELVENTILEN EINER BRENNKAFTMASCHINE
Title (fr)
DISPOSITIF DE DEPHASAGE DE SOUPAPES POUR MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 102009056021 A 20091127
- EP 2010068079 W 20101124
Abstract (en)
[origin: WO2011064228A1] The invention relates to a camshaft adjuster (11) for a camshaft (35), by means of which cylinder valves (12) of an internal combustion engine are actuated, wherein by means of the camshaft (35) late torques act on the camshaft adjuster (11) in the direction of later cylinder valve opening times when the cam is rising, and opposing early torques act on the camshaft adjuster (11) in the direction of earlier opening times when the cam is falling, wherein the feeding and draining of pressure medium can be controlled by means of a control unit (20), wherein a torque mode or a pump mode can be selectively adjusted by means of the control unit (20), wherein primarily camshaft torques are used for building up pressure in the first partial chamber A or in the second partial chamber B in the torque mode, while the pressure build-up in the first partial chamber A or in the second partial chamber B in the pump mode is primarily brought about by means of a pressure medium provided by a pressure medium pump P. The control unit thereby comprises a control valve (101) and a rotary transfer device (103), wherein the desired adjusting direction and the pump or torque mode can be adjusted by means of the control valve (101) and the adaptation to the occurring camshaft torques can be adjusted by means of the rotary transfer device (103).
IPC 8 full level
F01L 1/344 (2006.01)
CPC (source: EP US)
F01L 1/34409 (2013.01 - EP US); F01L 1/3442 (2013.01 - EP US); F01L 2001/0476 (2013.01 - EP US); F01L 2001/34426 (2013.01 - EP US); F01L 2001/34433 (2013.01 - EP US)
Citation (search report)
See references of WO 2011064228A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102009056021 A1 20110601; CN 102648339 A 20120822; CN 102648339 B 20140820; EP 2504534 A1 20121003; EP 2504534 B1 20131106; US 2012227693 A1 20120913; US 8584637 B2 20131119; WO 2011064228 A1 20110603
DOCDB simple family (application)
DE 102009056021 A 20091127; CN 201080053426 A 20101124; EP 10781511 A 20101124; EP 2010068079 W 20101124; US 201013511202 A 20101124