Spool valve controlled VCT locking pin release mechanism
US6814038B2 · kind B2 · utility
25Cited by
24References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2003 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34469
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable cam timing system that utilizes the same spool that controls the VCT mechanism to actively control the locking pin. The positions of the spool's multiple lands directly influences whether source oil is supplied to both the locking pin and either the retard or advance chamber of the phaser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.