EP 3577323 A1 20191211 - VARIABLE VALVE DRIVE OF A COMBUSTION PISTON ENGINE
Title (en)
VARIABLE VALVE DRIVE OF A COMBUSTION PISTON ENGINE
Title (de)
VARIABLER VENTILTRIEB EINES VERBRENNUNGSKOLBENMOTORS
Title (fr)
COMMANDE DE SOUPAPE VARIABLE D'UN MOTEUR À COMBUSTION INTERNE À PISTON
Publication
Application
Priority
- DE 102017101792 A 20170131
- DE 2018100053 W 20180124
Abstract (en)
[origin: WO2018141332A1] The invention relates to a variable valve drive (1) of an internal combustion engine, comprising at least one functionally identical gas exchange valve per cylinder, the valve stroke of which is specified by at least one primary cam (7) and a secondary cam (8) of a camshaft (6) and can be selectively transmitted to at least one paired gas exchange valve by means of a switchable cam follower (10) which has a primary follower (14) and a secondary follower (19). Each of the coupling elements (17) of the switchable cam follower (10) is designed as a coupling bolt which is guided in a transverse bore (16) of the primary follower (14) in an axially movable manner and which can be moved into an opposite coupling bore (28) of the secondary follower against the restoring force of a spring element (18) by means of a switching bolt (25) which is axially movable in a transverse bore (24) of the secondary follower (19). The outer end (26) of each switching bolt protrudes out of the secondary follower, and each switching bolt is connected to a selector rod (34) at said end via a connection element (29), said selector rod being arranged parallel to the camshaft (6) and being longitudinally movable by means of a linear actuator (31).
IPC 8 full level
F01L 1/18 (2006.01); F01L 13/00 (2006.01); F01L 13/06 (2006.01)
CPC (source: EP US)
F01L 1/185 (2013.01 - EP US); F01L 1/2405 (2013.01 - EP US); F01L 13/0005 (2013.01 - EP); F01L 13/065 (2013.01 - EP US); F01L 2001/0476 (2013.01 - EP US); F01L 2001/0537 (2013.01 - EP US); F01L 2001/186 (2013.01 - EP); F01L 2013/001 (2013.01 - EP); F01L 2013/101 (2013.01 - EP US)
Citation (search report)
See references of WO 2018141332A1
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)
DE 102017101792 A1 20180802; DE 102017101792 B4 20181115; CN 110023594 A 20190716; CN 110023594 B 20210514; EP 3577323 A1 20191211; EP 3577323 B1 20211006; US 10767517 B2 20200908; US 2019376420 A1 20191212; WO 2018141332 A1 20180809
DOCDB simple family (application)
DE 102017101792 A 20170131; CN 201880004678 A 20180124; DE 2018100053 W 20180124; EP 18702609 A 20180124; US 201816481848 A 20180124