EP 1440224 B1 20070926 - DEVICE FOR CONTROLLING GAS EXCHANGE VALVES
Title (en)
DEVICE FOR CONTROLLING GAS EXCHANGE VALVES
Title (de)
VORRICHTUNG ZUR STEUERUNG VON GASWECHSELVENTILEN
Title (fr)
DISPOSITIF DE COMMANDE DE SOUPAPES DE CHANGEMENT DES GAZ
Publication
Application
Priority
- DE 0202630 W 20020718
- DE 10152503 A 20011024
Abstract (en)
[origin: WO03038245A1] The invention relates to a device for controlling gas exchange valves in an internal combustion engine, said device having hydraulic valve actuators (17, 18) comprising actuating plungers (26) acting upon a gas exchange valve (12, 13) and working chambers (27, 28) defined by the actuating plunger (26). The first working chamber (27) for closing the gas exchange valve (12, 13) is permanently under fluid pressure and the second working chamber (28) for opening the gas exchange valve (10) is alternately filled with and emptied of a pressurized fluid by means of a first and a second electrical control valve (34, 35). In order to reduce the number of required control valves, the second working chamber (28) of the second valve actuator (18) in a pair of valves is filled through the second working chamber (28) of the first valve actuator (17) that is connected to the first control valve (34) once a given stroke of the actuating plunger (26) of the first valve actuator (17) is carried out so as to open the assigned gas exchange valve (12).
IPC 8 full level
CPC (source: EP US)
F01L 9/10 (2021.01 - EP US); F01L 2800/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 03038245 A1 20030508; DE 10152503 A1 20030508; DE 50210991 D1 20071108; EP 1440224 A1 20040728; EP 1440224 B1 20070926; JP 2005507045 A 20050310; KR 20040048980 A 20040610; US 2004079308 A1 20040429; US 7089896 B2 20060815
DOCDB simple family (application)
DE 0202630 W 20020718; DE 10152503 A 20011024; DE 50210991 T 20020718; EP 02760102 A 20020718; JP 2003540494 A 20020718; KR 20047005972 A 20020718; US 45187303 A 20031208