Adjustable valve control system with twin cams and cam lift summation lever
US6941910B2 · kind B2 · utility
7Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2002 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Aug 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2305/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system is disclosed for operating an engine valve. The system comprises two cams arranged on a common camshaft but rotatable relative to one another. A summation lever has cam followers in contact respective cams. The summation lever is movable in proportion to the instantaneous sum of the lifts of the respective cams. Rockers are provided for opening the engine valve in dependence upon the movement of the summation lever. By varying the phase of the cams relative to one another, it is possible to vary the valve timing, valve lift and/or valve event duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.