EP 3673157 A1 20200701 - VALVE DRIVE FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
VALVE DRIVE FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
VENTILTRIEB FÜR EINE BRENNKRAFTMASCHINE
Title (fr)
MÉCANISME DE DISTRIBUTION POUR MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102017214793 A 20170824
- EP 2018069085 W 20180713
Abstract (en)
[origin: WO2019037945A1] The invention relates to a valve drive for a cylinder head of an internal combustion engine, comprising a first camshaft which is rotatably mounted in a first and a second camshaft bearing and which comprises at least one cam with a first cam curve and a second cam curve that differs from the first cam curve, wherein a gas exchange valve can be actuated by the first or the second cam curve, a camshaft section is provided, by means of which the cam can be moved by an adjusting means such that the gas exchange valve can be actuated either via the first or the second cam curve, the first camshaft and the cam have a fixed position relative to each other, the first camshaft can be axially moved in the first and the second camshaft bearing, and an axial lock is provided for the camshaft. By means of the valve drive design according to the invention, a substantial reduction of production costs is achieved compared to the prior art and undesired toothing noises are prevented. Additionally, the camshaft is axially locked depending on which cam curve is interacting with the gas exchange valve.
IPC 8 full level
F01L 13/00 (2006.01); F01L 1/047 (2006.01)
CPC (source: EP US)
F01L 1/047 (2013.01 - EP); F01L 1/053 (2013.01 - US); F01L 13/0036 (2013.01 - EP US); F01L 1/185 (2013.01 - US); F01L 2001/0471 (2013.01 - US); F01L 2001/0476 (2013.01 - EP US); F01L 2013/0052 (2013.01 - EP US)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019037945 A1 20190228; CN 110753784 A 20200204; CN 110753784 B 20210903; DE 102017214793 A1 20190228; EP 3673157 A1 20200701; EP 3673157 B1 20240529; US 11002162 B2 20210511; US 2020191025 A1 20200618
DOCDB simple family (application)
EP 2018069085 W 20180713; CN 201880040499 A 20180713; DE 102017214793 A 20170824; EP 18742452 A 20180713; US 202016797169 A 20200221