Method of controlling solenoid valve
US8681468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Sep 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of solenoid valve control includes measuring voltage across the solenoid valve and current through the solenoid valve, and using the results to aid in controlling the solenoid valve. For instance, one or both of the measured values may be used to determine when actual engagement of the solenoid valve occurs. An initial lower voltage and lower current can be used, and then as conditions change, the changes in condition can be accounted for by increasing voltage and current to maintain the desired response time of the solenoid valve. By measuring and controlling voltage and current less of a margin can be used, both in setting voltage/current levels and in selecting the time over which a pull voltage/current is utilized. This reduces the wasted energy in the system, as well as reducing the temperature rise in the solenoid valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.