Built-in test of actively controlled fuel nozzles
US12398681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Sep 13, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C9/263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for detecting performance degradation of an AC Nozzle in a gas turbine engine including operating the gas turbine engine under a normal operating condition, maintaining the fuel flow rate at a constant fuel flow rate, determining a delta pressure PDelta-Normal across an N number of Proportional Metering Valves (PMVs) as the gas turbine engine is operating under the normal operating condition, selecting a PMV and an AC Nozzle, controlling the PMV to modify a fuel flow rate to the selected AC Nozzle to cause the gas turbine engine to operate under a modified fuel flow condition, determining a delta pressure PDelta-Modified across the N number of PMVs as the gas turbine engine is operating under the modified operating condition and comparing the delta pressure PDelta-Normal with the delta pressure PDelta-Modified to determine if the selected AC Nozzle is uncalibrated or has failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.