Title:
CAM FOLLOWER FOR A VALVE TAPPET ARRANGEMENT IN A COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/142731
Kind Code:
A3
Abstract:
The present invention pertains to a cam follower for a valve tappet arrangement in a combustion engine. The cam follower (4) comprises a primary device (8), a secondary device (10) and a lock component (13), which is attached on one of said devices (10) and comprises a contact surface (13c1), adapted to be moved into engagement with a contact surface (8a1) of the second of said devices (8). The lock component (13) is applicable in an unlocked position, in which steering motions from the secondary device (10) are not transmittable to the primary device (8) via the said contact surfaces (8a1, 13c1), in a partly locked position and in a fully locked position, in which steering motions from the secondary device (10) are transmittable to the primary device (8) via said contact surfaces (8a1, 13c1). The contact surfaces (8a1,13c1) have a complementary shape. They are not in full contact with each other in the partly locked position and are in full contact with each other in the fully locked position. They have a gradient in relation to each other in the partly locked position, so that, when a steering motion from the secondary device (10) is applied to said contact surfaces (8a1, 13c1) being in the partly locked position, the lock component's contact surface (13c1) will be adjusted in relation to the second contact surface (8a0, until the contact surfaces (8a1, 13c1) are in full contact with each other and the lock component (13) is in the fully locked position.
Inventors:
GUNNARSSON NICLAS (SE)
Application Number:
PCT/SE2014/050212
Publication Date:
December 04, 2014
Filing Date:
February 21, 2014
Export Citation:
Assignee:
SCANIA CV AB (SE)
International Classes:
F01L13/00
Domestic Patent References:
| WO2007035673A2 | 2007-03-29 | |||
| WO2004094791A1 | 2004-11-04 |
Foreign References:
| US20080127917A1 | 2008-06-05 | |||
| US20070039573A1 | 2007-02-22 | |||
| DE102005037053A1 | 2007-02-08 | |||
| US20090000584A1 | 2009-01-01 | |||
| US20100300389A1 | 2010-12-02 | |||
| US20030051690A1 | 2003-03-20 |
Attorney, Agent or Firm:
WESTMAN, Mimmi (Södertälje, SE)
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