EP 3633157 A1 20200408 - CONCENTRIC CAMSHAFT AXIAL POSITION CONTROL
Title (en)
CONCENTRIC CAMSHAFT AXIAL POSITION CONTROL
Title (de)
KONZENTRISCHE NOCKENWELLENAXIALLAGEREGELUNG
Title (fr)
COMMANDE DE POSITION AXIALE D'UN ARBRE À CAMES CONCENTRIQUE
Publication
Application
Priority
EP 18198581 A 20181004
Abstract (en)
A concentric camshaft for an internal combustion engine is disclosed that comprises an outer tube (12), an inner shaft (24), and two groups of cam lobes (14;22). The first group (14) is fixed for rotation with the outer tube (12) and the second group (22) is rotatably mounted on the outer tube (12) and connected for rotation with the inner shaft (24). One or more bearing rings (16,17) are mounted to the outer tube (12) providing a bearing surface for supporting the camshaft in the engine, a bearing ring (16) secured to an axial end of the outer tube (12) serving to apply drive torque to the outer tube (12). In the invention, a sleeve (30) is secured to the outer surface of the inner shaft (24) for setting the axial position of the inner shaft (24) relative to the outer tube (12), the axial length of the sleeve (30) serving to limit the axial movement of the inner shaft (24) relative to the outer tube (12); a first axial end face of the sleeve (30) serving to limit the movement of the inner shaft (24) in one axial direction, and a second axial end face of the sleeve (30) serving to limit movement of the inner shaft (24) in the opposite axial direction.
IPC 8 full level
F01L 1/047 (2006.01); F01L 1/344 (2006.01)
CPC (source: EP)
F01L 1/047 (2013.01); F01L 1/34413 (2013.01); F01L 2001/0473 (2013.01); F01L 2001/0476 (2013.01)
Citation (applicant)
EP 1725745 A1 20061129 - MAHLE VENTILTRIEB GMBH [DE]
Citation (search report)
- [XY] EP 2527607 A2 20121128 - SHW AUTOMOTIVE GMBH [DE]
- [X] DE 102011052823 A1 20130221 - THYSSENKRUPP PRESTA TECCT AG [LI]
- [X] US 2014190434 A1 20140710 - BAYRAKDAR ALI [DE]
- [I] US 2017204751 A1 20170720 - MEUSEL JUERGEN [DE], et al
- [I] US 2017254234 A1 20170907 - LEHMANN MARTIN [DE], et al
- [Y] EP 1963625 A1 20080903 - MAHLE INT GMBH [DE]
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)
DOCDB simple family (application)
EP 18198581 A 20181004; IB 2019058185 W 20190926