EP 1143115 B1 20040128 - Return spring arrangement for valve operation of an internal combustion engine
Title (en)
Return spring arrangement for valve operation of an internal combustion engine
Title (de)
Schliessfeder-Vorrichtung für den Ventiltrieb eines Gaswechselventils einer Brennkraftmaschine
Title (fr)
Dispositif de ressort pour l'opération d'une soupape d'un moteur à combustion interne
Publication
Application
Priority
DE 10016878 A 20000405
Abstract (en)
[origin: EP1143115A2] The device (1) has a mechanical spring (3) and a gas spring (4) that is controlled at a given engine rpm range, which are connected in parallel to close the gas shuttle valve (2). The gas spring has a piston (6) that moves to close a chamber (5). The gas spring piston is formed as a rammer (7) with a piston shroud (9) sealingly sliding in the chamber to separate it from the gas spring chamber. The gas spring is supplied from the pump space, which is controlled by a medium, over a controlled overflow channel (10) for the compressed medium during the maximum opening stroke of the gas shuttle valve.
IPC 1-7
IPC 8 full level
F01L 1/14 (2006.01); F01L 1/46 (2006.01); F01L 3/10 (2006.01)
CPC (source: EP)
F01L 1/143 (2013.01); F01L 1/465 (2013.01); F01L 3/10 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1143115 A2 20011010; EP 1143115 A3 20030102; EP 1143115 B1 20040128; DE 10016878 A1 20011018; DE 50101377 D1 20040304; ES 2213650 T3 20040901
DOCDB simple family (application)
EP 01108364 A 20010403; DE 10016878 A 20000405; DE 50101377 T 20010403; ES 01108364 T 20010403