Hydraulic camshaft phaser with mechanical lock
US7669566B2 · kind B2 · utility
14Cited by
1References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Apr 18, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34483
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Hydraulically operated camshaft phasers are described which comprise a drive member and a driven member having a fixed range of angular adjustment and a means for mechanically locking the position of the driven member relative to the drive member when there is insufficient hydraulic pressure to operate the phaser. In the invention, the lock operates in an intermediate position within the range of adjustment, and a hydraulic circuit is provided for biasing the phaser towards the intermediate position for the lock to engage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.