Device and method for detecting an end of a movement of a valve piston in a valve
US7454299B2 · kind B2 · utility
12Cited by
2References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | May 7, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/063
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device is embodied for detecting a first variable that is representative of an induced voltage induced by a movement of a valve piston in the coil of a valve. The device is further embodied for determining a second variable representative of a first derivation of a first variable according to time. Furthermore the device is embodied for detecting the end of the movement of the valve piston in the valve if the first variable is greater than a predetermined first threshold value and the second variable drops be low a predetermined second threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.