Valve deactivation assembly with partial journal bearings
US6481400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Sep 25, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve deactivation assembly includes an elongate camshaft having at least one lift lobe. The lift lobe has a lift portion and a base circle portion, and is affixed to or integral with the camshaft. A first null lobe is disposed on a first side of the lift lobe, and is affixed to or integral with the camshaft. A second null lobe is disposed on a second side of the lift lobe, and is affixed to or integral with the camshaft. A first journal bearing is disposed on the first null lobe, and a second journal bearing is disposed on the second null lobe. The journal bearings are configured for engaging a body of a deactivation roller finger follower to thereby reduce friction and wear of the roller finger follower body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.