EP 2060754 B1 20111214 - Hydraulic unit for a cylinder head for a combustion engine with a variable valve stroke
Title (en)
Hydraulic unit for a cylinder head for a combustion engine with a variable valve stroke
Title (de)
Hydraulikeinheit für einen Zylinderkopf einer Brennkraftmaschine mit hydraulisch variablem Ventiltrieb
Title (fr)
Unité hydraulique pour culasse d'un moteur à combustion interne dotée d'une commande de soupape hydraulique variable
Publication
Application
Priority
DE 102007054376 A 20071114
Abstract (en)
[origin: EP2060754A2] The hydraulic unit (5) has a slave unit (8) activating a gas-exchange valve. A hydraulic housing is provided with a bottom part (20) and a top part (22). A master unit (6), a slave unit, a high-pressure chamber, a hydraulic valve (10) and a medium-pressure chamber (12) are in connection with the hydraulic housing. A low-pressure chamber (16) used as a hydraulic medium reservoir is formed in the top part and communicates with the medium-pressure chamber through a choke opening that is formed through a separating wall extending between the low-pressure chamber and the medium-pressure chamber.
IPC 8 full level
CPC (source: EP KR US)
F01L 9/14 (2021.01 - EP US); F01L 13/00 (2013.01 - KR); F01L 2001/34446 (2013.01 - EP US); F01L 2820/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 2060754 A2 20090520; EP 2060754 A3 20100505; EP 2060754 B1 20111214; CN 101435353 A 20090520; CN 101435353 B 20130327; DE 102007054376 A1 20090520; JP 2009121481 A 20090604; JP 5354260 B2 20131127; KR 101515636 B1 20150427; KR 20090049999 A 20090519; US 2009120389 A1 20090514; US 8020526 B2 20110920
DOCDB simple family (application)
EP 08167285 A 20081022; CN 200810173359 A 20081113; DE 102007054376 A 20071114; JP 2008291700 A 20081114; KR 20080112489 A 20081113; US 27103108 A 20081114