EP 2875217 A2 20150527 - A CONCENTRIC CAMSHAFT ARRANGEMENT
Title (en)
A CONCENTRIC CAMSHAFT ARRANGEMENT
Title (de)
KONZENTRISCHE NOCKENWELLE
Title (fr)
ARBRE A CAMES CONCENTRIQUE
Publication
Application
Priority
- GB 201212683 A 20120717
- IB 2013055764 W 20130712
Abstract (en)
[origin: GB2504100A] A concentric camshaft arrangement comprises an inner shaft 112 and an outer tube 114, concentrically arranged with the inner shaft and operable to rotate relative to a cylinder head 121. A first set of lobes 116 is fixed to the outer tube for rotation therewith. A second set of lobes 118 is attached to the inner shaft for rotation therewith and relative to the outer tube. Rolling bearings 144 are arranged in a housing and have a radial clearance. A camshaft oil feed 122 for supplying oil for lubrication of the camshaft is defined by an oil feed clearance between the outer surface of the outer tube 114 and an inner surface of the cylinder head 121 and wherein the oil feed radial clearance is greater than the rolling bearing radial clearance. This arrangement ensures that all the camshaft loads are supported by the bearings and not shared by the oil feed.
IPC 8 full level
F01L 1/047 (2006.01); F01L 1/344 (2006.01)
CPC (source: CN EP GB US)
F01L 1/047 (2013.01 - CN EP GB US); F01L 1/344 (2013.01 - GB); F01L 1/34413 (2013.01 - CN EP US); F01L 1/3442 (2013.01 - CN EP US); F01M 9/102 (2013.01 - US); F01L 2001/0473 (2013.01 - CN EP GB US); F01L 2001/0476 (2013.01 - CN EP US); F01L 2001/34423 (2013.01 - CN EP US); F01L 2810/02 (2013.01 - CN EP US); Y10T 74/2101 (2015.01 - EP US)
Citation (search report)
See references of WO 2014013409A2
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)
GB 201212683 D0 20120829; GB 2504100 A 20140122; CN 104428497 A 20150318; CN 104428497 B 20170613; EP 2875217 A2 20150527; EP 2875217 B1 20160302; US 2015192043 A1 20150709; WO 2014013409 A2 20140123; WO 2014013409 A3 20140306
DOCDB simple family (application)
GB 201212683 A 20120717; CN 201380036920 A 20130712; EP 13779347 A 20130712; IB 2013055764 W 20130712; US 201314412716 A 20130712