Method of detecting valve timing
US6612322B2 · kind B2 · utility
1Cited by
14References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Sep 4, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8242
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for detecting a valve position includes the step of providing a non-actuating alternating current signal (24) to a drive coil signal (22). As a valve plunger (14) moves within the coil, the non-actuating signal changes. By monitoring (26,29) the non-actuating signal a control can predict when the plunger reaches a particular position. This invention thus provides a simplified way of detecting an end of travel position (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.