Fuel injector
US11346558B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jul 15, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23R3/343
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector for a gas turbine engine, the injector comprising a main fuel flow circuit and a pilot fuel flow circuit. The pilot fuel flow circuit comprises at least one convoluted pilot fuel flow passage extending continuously from a pilot fuel feed at an upstream end of the injector to a pilot fuel spray nozzle inlet. The at least one pilot fuel flow passage comprises at least two axially-extending portions extending between the upstream end of the injector towards a downstream end of the injector and joined by an elbow portion proximal the downstream end of the injector. In use, pilot fuel can flow in opposing axial directions within the at least two axially-extending portions, the axially-extending portions being in thermal communication with the main fuel flow circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.