Fuel system for a gas turbine engine
US7007452B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Jan 10, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C9/38
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A metering valve initiates fuel flow shutoff and is used in the draining of the fuel manifolds, thereby eliminating the need for an additional solenoid dedicated mainly to the shutoff function. The shutoff and pressurizing valve provides flow division between manifolds and manifold drain for systems having multiple manifolds. The bypass valve is used to turn the motive flow and/or manifold drain functions on and off as a function of engine speed at start and shutdown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.