Switchable lever for a valve drive of an internal combustion engine
US8794205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2011 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a switchable lever (1) for a valve train of an internal combustion engine, said lever (1) comprising on one end (5), a bearing (6) for enabling a pivotal support of said lever (1) and, on another end (7), a support (9) for a gas exchange valve, a crossbar (2) of the lever (1) comprising a recess (10) comprising two cam rollers (11, 12) which are seated on an axle (15) mounted in bores (13, 14) of side walls (3, 4) of the lever (1) and displaceable in axial direction, a hollow axle (16) arranged on said axle (15) extending inwards out of the bore (13) of the first side wall (3), a first one of the cam rollers (11) being guided, axially fixed on said hollow axle (16) in front of an inner side (17) of the first side wall (3), said first cam roller (11) serving for a permanent contact of a first low lift cam (18) of a cam assembly (19), a second one of the cam rollers (12) being axially fixed on said axle (15) and being displaceable by said axle (15) into two positions, a first one of said positions serving to switch to a high valve lift during which the second cam roller (12) can be displaced through said axle (15) into a central position in the recess (10), so …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.