Low friction fuel metering valve
US9212608B2 · kind B2 · utility
2Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86517
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of metering fuel with a fuel valve. The method includes arranging a spool within to a sleeve along an axis, wherein the spool includes four seal lands. The sleeve includes a fuel inlet aperture, a fuel outlet aperture, and a shutoff port. A first cavity and a second cavity are defined between the spool, the sleeve, and subsets of the seal lands. The fuel inlet port and the fuel outlet port abut one such cavity. Sliding the spool along the axis results in the fuel outlet aperture extending longitudinally beyond the second seal land in the upstream direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.