EP 1662098 A1 20060531 - Variable valve drive of an internal combustion engine
Title (en)
Variable valve drive of an internal combustion engine
Title (de)
Variabler Ventiltrieb einer Brennkraftmaschine
Title (fr)
Commande de soupape variable de moteur à combustion interne
Publication
Application
Priority
DE 102004057574 A 20041130
Abstract (en)
The variable valve drive (1) operates a valve (3) moved by a cam (5) and a tappet (13). The volume change of the working cavity (18) of a hydraulic lifting device (19) acts on the tap it. The hydraulic pump (25) has a pressure cavity (22) with the volume (36) that can be reduced by a displaceable wall (27) in the pressure cavity, with expulsion of hydraulic fluid from the pressure cavity into the working cavity.
IPC 8 full level
F01L 13/00 (2006.01); F01L 1/18 (2006.01); F01L 1/24 (2006.01); F01L 9/10 (2021.01); F01L 13/06 (2006.01)
CPC (source: EP)
F01L 1/185 (2013.01); F01L 1/2405 (2013.01); F01L 9/10 (2021.01); F01L 13/0031 (2013.01); F01L 13/065 (2013.01)
Citation (applicant)
- DE 10156309 A1 20020725 - AVL LIST GMBH [AT]
- DE 10242866 A1 20030424 - AVL LIST GMBH [AT]
Citation (search report)
- [X] US 5150678 A 19920929 - WITTMANN DIETER [DE], et al
- [X] DE 3026529 A1 19820211 - MASCHF AUGSBURG NUERNBERG AG [DE]
- [Y] US 4158348 A 19790619 - MASON LLOYD R, et al
- [Y] US 3797469 A 19740319 - KOBAYASHI M, et al
- [A] DE 4318293 A1 19931216 - VOLKSWAGEN AG [DE]
- [DA] DE 10242866 A1 20030424 - AVL LIST GMBH [AT]
- [A] US 4167931 A 19790918 - IIZUKA HARUHIKO
- [A] US 4615307 A 19861007 - KODAMA HISASHI [JP], et al
- [A] EP 1462623 A1 20040929 - EATON CORP [US]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 1662098 A1 20060531; EP 1662098 B1 20080123; DE 102004057574 A1 20060608; DE 502005002644 D1 20080313
DOCDB simple family (application)
EP 05024165 A 20051105; DE 102004057574 A 20041130; DE 502005002644 T 20051105