Variable camshaft timing mechanism with a default mode
US8820280B2 · kind B2 · utility
7Cited by
9References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Oct 23, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M9/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable cam timing phaser with a control valve for directing fluid from a fluid input to and from the advance chamber and the retard chamber of the phaser through an advance line, a retard line, a common line, an advance default line, a retard default line, and at least one exhaust line. The control valve being movable between a default mode and an oil pressure actuated mode. In the default mode, the control valve blocks exhaust lines, retaining fluid within the chambers. The oil pressure actuated mode includes at least an advance mode, a retard mode, and a holding position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.