Starter air valve system with dual electromechanical controls
US10669945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Mar 7, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
According to an aspect, a system includes a starter air valve in fluid communication with an air turbine starter to drive motoring of a gas turbine engine responsive to a compressed air flow from a compressed air source. The system also includes a variable-position electromechanical device operable to adjust positioning of the starter air valve and a discrete-position electromechanical device operable to adjust positioning of the starter air valve and limit a motoring speed of the gas turbine engine below a resonance speed of the gas turbine engine responsive to a pulse width modulation control based on a failure of the variable-position electromechanical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.