Switchable lever for a valve drive of an internal combustion engine
US8677958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Mar 22, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A switchable lever for a valve drive of an internal combustion engine, which has an elongated housing with two side walls. A crossbar for a gas-exchange valve system and another end of the housing has a hearing for pivotable support of the crossbar. An axle is held nondisplaceably in the side walls. An axially fixed low-lift cam roller is seated centrally on the axle and is flanked on both sides by a high-lift cam roller. The high-lift cam rollers are displaceable: (a) into a first position, away from each other, to toward the side walls such that contact of one high-lift cam per high-lift cam roller is possible, and (b) into a second position, toward each other, such that they are located outside an engagement region of the high-lift cams, and as a result of which contact of a low-lift or zero-lift cam with the low-lift cam roller is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.