EP 2291578 A1 20110309 - VALVE TRAIN FOR GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE HAVING DOUBLE-SUPPORTED CAM CARRIERS
Title (en)
VALVE TRAIN FOR GAS EXCHANGE VALVES OF AN INTERNAL COMBUSTION ENGINE HAVING DOUBLE-SUPPORTED CAM CARRIERS
Title (de)
VENTILTRIEB FÜR GASWECHSELVENTILE EINER BRENNKRAFTMASCHINE MIT DOPPELT ABGESTÜTZTEN NOCKENTRÄGERN
Title (fr)
DISTRIBUTION POUR LES SOUPAPES D'ECHANGE DE GAZ D'UN MOTEUR A COMBUSTION INTERNE AVEC DES SUPPORTS DE CAME DOUBLEMENT SOUTENUS
Publication
Application
Priority
- EP 2009003708 W 20090526
- DE 102008028513 A 20080616
Abstract (en)
[origin: WO2009152927A1] The invention relates to a valve train (1) for gas exchange valves (2) of an internal combustion engine, having a base camshaft (3), a plurality of cam carriers (4) arranged on the base camshaft (3) in a rotationally fixed and axially displaceable way, and locking devices (24) for retaining the cam carriers (4) in defined displacement positions along the base camshaft (3). The locking devices (24) each comprise a pressing element (26), which is inserted into a recess (25) of the base camshaft (3) and pressed in the radial direction of the base camshaft (3) against an opposing inner circumferential section of the cam carrier (4). In order to counteract noise development in the valve train, according to a first variant of the invention, a further pressing element (31) is provided at an axial distance to the pressing element (26) and is pressed against an opposing inner circumferential section (33) of the cam carrier (4). According to a second alternative or additional variant of the invention, the pressing elements (26, 31) of different cam carriers (4) are offset from each other in the circumferential direction of the base camshaft (3).
IPC 8 full level
F01L 1/053 (2006.01); F01L 13/00 (2006.01)
CPC (source: EP US)
F01L 1/053 (2013.01 - EP US); F01L 13/0036 (2013.01 - EP US); F01L 2013/0052 (2013.01 - EP US)
Citation (search report)
See references of WO 2009152927A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008028513 A1 20091224; CN 102132014 A 20110720; CN 102132014 B 20150304; EP 2291578 A1 20110309; EP 2291578 B1 20151125; JP 2011524482 A 20110901; JP 5367073 B2 20131211; US 2011180027 A1 20110728; US 9103243 B2 20150811; WO 2009152927 A1 20091223; WO 2009152927 A9 20110331
DOCDB simple family (application)
DE 102008028513 A 20080616; CN 200980122759 A 20090526; EP 09765507 A 20090526; EP 2009003708 W 20090526; JP 2011512855 A 20090526; US 99949109 A 20090526