Flow compensated proportional bypass valve combined with a control valve
US8348630B2 · kind B2 · utility
7Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2605
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A common regulator valve is provided for a variable displacement pump fuel metering scheme in which the common regulator valve both controls working output to a pump actuator to control displacement of the variable displacement pump and also to control bypass of excess fuel flow. The regulator valve also includes a differential piston which generates a compensation force off of the bypass flow in order to compensate for changes in spring force and flow reaction force at different system pressures and operational states. As a result, errors in the metered fuel flow can be either eliminated or substantially reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.