On-wing component wear analysis with fluid quality sensing

Patent metadata

Field	Value
Publication number	US-10180075-B1
Application number	US-201715686917-A
Country	US
Kind code	B1
Filing date	Aug 25, 2017
Priority date	Aug 25, 2017
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

Technologies for engine fluid quality monitoring are disclosed herein. An engine system includes a gas turbine engine having one or more mechanical components, a fluid quality sensing system, and an engine controller. Each mechanical component includes a tracer material embedded in the mechanical component during manufacture. The fluid quality sensing system applies a laser beam to debris captured in an engine fluid of the gas turbine engine and detects a light signature generated by tracer material in the debris in response to application of the laser beam. The engine controller identifies the tracer material as a function of the light signature. The engine controller determines a potential wear state of a mechanical component as a function of the tracer material. The engine controller may select the mechanical component from multiple mechanical components based on the tracer material. Each mechanical component has a predetermined association with a corresponding tracer material.

First claim

The invention claimed is:

1. An engine system for engine fluid monitoring, the engine system comprising:
a gas turbine engine that comprises a mechanical component, wherein the mechanical component includes a tracer material that is embedded in the mechanical component during manufacture;
a sump system to capture debris from an engine fluid of the gas turbine engine;
a fluid quality sensing system to (i) apply a laser beam to the debris and (ii) detect a light signature generated by the debris in response to application of the laser beam; and
an engine controller to (i) identify the tracer material in the debris as a function of the light signature, wherein the tracer material generates the light signature in response to application of the laser beam, and (ii) determine a potential wear state of the mechanical component of the gas turbine engine as a function of the tracer material, wherein the potential wear state indicates whether the mechanical component is potentially worn or not worn.

2. The engine system of claim 1 , wherein the engine fluid comprises engine oil.

3. The engine system of claim 1 , wherein to capture the debris from the engine fluid comprises to capture the debris with a magnetic chip detector.

4. The engine system of claim 1 , wherein to capture the debris from the engine fluid comprises to capture the debris with a fluid sump.

5. The engine system of claim 1 , wherein the engine controller is further to log the potential wear state of the mechanical component in non-volatile storage of the engine system.

6. The engine system of claim 1 , wherein the engine controller is further to generate a user alert based on the potential wear state of the mechanical component.

7. The engine system of claim 1 , wherein to determine the potential wear state of the mechanical component comprises to select the mechanical component from a plurality of mechanical components of the gas turbine engine based on the tracer material, wherein each of the plurality of mechanical components has a predetermined association with a corresponding tracer material.

8. A method for engine fluid monitoring, the method comprising:
capturing, by a sump system, debris from an engine fluid of the gas turbine engine;
applying, by a fluid quality sensing system, a laser beam to the debris;
detecting, by the fluid quality sensing system, a light signature generated by the debris in response to applying the laser beam;
identifying, by an engine controller, a tracer material in the debris as a function of the light signature, wherein the tracer material generates the light signature in response to application of the laser beam; and
determining, by the engine controller, a potential wear state of a mechanical component of the gas turbine engine as a function of the tracer material, wherein the tracer material is embedded in the mechanical component during manufacture, and wherein the potential wear state indicates whether the mechanical component is potentially worn or not worn.

9. The method of claim 8 , wherein the engine fluid comprises engine oil.

10. The method of claim 8 , wherein capturing the debris from the engine fluid comprises capturing the debris with a magnetic chip detector.

11. The method of claim 8 , wherein capturing the debris from the engine fluid comprises capturing the debris with a fluid sump.

12. The method of claim 8 , further comprising logging, by the engine controller, the potential wear state of the mechanical component in non-volatile storage.

13. The method of claim 8 , further comprising generating, by the engine controller, a user alert based on the potential wear state of the mechanical component.

14. The method of claim 8 , wherein determining the potential wear state of the mechanical component comprises selecting the mechanical component from a plurality of mechanical components of the gas turbine engine based on the tracer material, wherein each of the plurality of mechanical components has a predetermined association with a corresponding tracer material.

15. An engine controller comprising tracer analysis logic to:
identify a tracer material in debris collected from an engine fluid of a gas turbine engine as a function of a light signature, wherein the tracer material generates the light signature in response to application of a laser beam; and
determine a potential wear state of a mechanical component of the gas turbine engine as a function of the tracer material, wherein the tracer material is embedded in the mechanical component during manufacture.

16. The engine controller of claim 15 , further comprising spectroscopy control logic to:
apply the laser beam to the debris in response to capturing the debris; and
detect the light signature generated by the debris in response to applying the laser beam.

17. The engine controller of claim 15 , wherein the engine fluid comprises engine oil.

18. The engine controller of claim 15 , wherein the tracer analysis logic is further to log the potential wear state of the mechanical component in non-volatile storage of the engine controller.

19. The engine controller of claim 15 , wherein the tracer analysis logic is further to generate a user alert based on the potential wear state of the mechanical component.

20. The engine controller of claim 15 , wherein to determine the potential wear state of the mechanical component comprises to select the mechanical component from a plurality of mechanical components of the gas turbine engine based on the tracer material, wherein each of the plurality of mechanical components has a predetermined association with a corresponding tracer material.

Assignees

• Rolls Royce Corp

Inventors

• Andrus Dawn K
• Elliott Michael T
• Costello John
• Fulford Anthony
• Gebhard John

Classifications

• G01N33/2888

  Lubricating oil characteristics, e.g. deterioration (lubricating properties G01N33/30) · CPC title

• F01D25/18

  Lubricating arrangements (of machines or engines in general F01M) · CPC title

• G01N21/94

  Investigating contamination, e.g. dust (G01N21/85 takes precedence) · CPC title

• F05D2260/98

  Lubrication · CPC title

• G01N2201/06113

  Coherent sources; lasers · CPC title