Systems and methods for purging a fuel manifold of a gas turbine engine
US11525410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2020 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/602
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Fuel systems of gas turbine engines of aircraft, and associated methods are provided. The fuel systems and methods can permit reverse purging of one or more fuel manifolds of a gas turbine engine to prevent coking in some modes of operation. A fuel system includes first and second fuel manifolds fluidly connectable to a combustor of the gas turbine engine. A valve is operatively disposed between the second fuel manifold and a fuel supply line for controlling fuel supply to the second fuel manifold. A reservoir includes a movable piston disposed therein and dividing the reservoir into a first chamber and a second chamber. The first chamber is fluidly connectable to the fuel supply line or to a fuel purge line via the valve. The second chamber is in fluid communication with the second fuel manifold to receive residual fuel from the second fuel manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.