EP 3071805 A1 20160928 - HYDRAULIC VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE
Title (en)
HYDRAULIC VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE
Title (de)
HYDRAULISCHER VENTILTRIEB EINES VERBRENNUNGSMOTORS
Title (fr)
MÉCANISME DE DISTRIBUTION HYDRAULIQUE D'UN MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102013223926 A 20131122
- DE 2014200539 W 20141008
Abstract (en)
[origin: WO2015074652A1] The invention proposes a hydraulic valve brake (14) for a hydraulic valve drive of an internal combustion engine. The valve brake comprises a housing (19) with a housing wall (17) and with a housing base (20), and comprises a piston (6) which moves axially in the housing and one end side of which, together with the housing wall and the housing base, delimits a hydraulic pressure chamber (21) and the other end side of which actuates a gas exchange valve (2). The housing wall is extended through in the region of the pressure chamber (21) by one or more flow transfer openings (24, 25), the opening cross sections of which are controlled by a control edge (25), which delimits the end side at the pressure chamber side, of the piston. In this case, it is the intention for the axial distance (h) between the control edge of the piston, when the latter is fully retracted into the housing, and the housing base to be set by means of a spacer (26) of predetermined thickness (d).
IPC 8 full level
F01L 9/14 (2021.01); F01L 1/16 (2006.01); F01L 1/20 (2006.01); F01L 9/10 (2021.01); F01L 9/12 (2021.01)
CPC (source: CN EP US)
F01L 1/16 (2013.01 - CN EP US); F01L 1/205 (2013.01 - CN EP US); F01L 9/10 (2021.01 - CN EP US); F01L 9/14 (2021.01 - CN EP US); F01L 9/12 (2021.01 - US)
Citation (search report)
See references of WO 2015074652A1
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 2015074652 A1 20150528; CN 105765181 A 20160713; CN 105765181 B 20181113; DE 102013223926 A1 20150528; DE 102013223926 B4 20180208; EP 3071805 A1 20160928; EP 3071805 B1 20171213; US 10247061 B2 20190402; US 2016273420 A1 20160922; US 2018230868 A1 20180816; US 9957856 B2 20180501
DOCDB simple family (application)
DE 2014200539 W 20141008; CN 201480063970 A 20141008; DE 102013223926 A 20131122; EP 14793777 A 20141008; US 201415035905 A 20141008; US 201815933920 A 20180323