Device for monitoring the obstruction of at least two filters of a fluid circulation system of an aircraft gas turbine engine
US8443654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2011 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Sep 28, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K2300/202
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device monitors an obstruction of two fluid filters of a fluid circulation system of a gas turbine engine of an aircraft. A first obstruction sensor sends a first detection signal of an obstruction of a first filter. A second obstruction sensor sends a second detection signal of an obstruction of a second filter. A processor includes a monitoring input to measure the first and second detection signals. The first obstruction sensor includes a Wheatstone bridge including a strain gauge resistor. The second obstruction sensor is connected in parallel with the strain gauge resistor. The first detection signal is sent over a first predetermined variation range. The second detection signal is sent over a second predetermined variation range, distinct from the first variation range. The processor identifies the obstruction of one of the fluid filters as a function of one of the variation ranges of the detection signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.