WO1994020739B1 - Integrated engine control system for a gas turbine engine - Google Patents
Integrated engine control system for a gas turbine engineInfo
- Publication number
- WO1994020739B1 WO1994020739B1 PCT/US1994/002269 US9402269W WO9420739B1 WO 1994020739 B1 WO1994020739 B1 WO 1994020739B1 US 9402269 W US9402269 W US 9402269W WO 9420739 B1 WO9420739 B1 WO 9420739B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- engine
- oil
- pump
- fuel
- signal
- Prior art date
Links
- 239000000446 fuel Substances 0.000 claims abstract 51
- 230000001276 controlling effect Effects 0.000 claims abstract 13
- 239000003921 oil Substances 0.000 claims 47
- 239000012530 fluid Substances 0.000 claims 26
- 238000005086 pumping Methods 0.000 claims 17
- 230000001419 dependent Effects 0.000 claims 16
- 239000010705 motor oil Substances 0.000 claims 15
- 238000001816 cooling Methods 0.000 claims 6
- 230000000875 corresponding Effects 0.000 claims 6
- 230000003247 decreasing Effects 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 1
Abstract
An engine control system and method for monitoring and controlling operation of a gas turbine engine. The system comprises a fuel metering device having a fuel pump, drive means for driving the fuel pump, a flow meter, and control means for utilizing a flow meter signal to control the speed of the drive means and pump. A tachometer may be utilized as a secondary feedback mechanism under certain predetermined operating conditions. Furthermore, a third feedback mechanism in the form of a metering valve and valve position sensor may be used to provide a triple-redundant feedback system. An oil metering device is utilized for monitoring and controlling the flow of oil in a gas turbine engine. The oil metering device includes an oil pump, drive means for driving the oil pump, and control means for controlling the speed of the drive means and pump. Similar to the fuel metering device, the oil metering device may comprise one or more of the noted feedback systems to control the oil flow rate. The electric fuel pump, electric oil pump, and control means are all collocated in one area of the engine, preferably the jet core housing.
Claims
1. An engine fuel metering device comprising: a fuel pump for pumping fuel through a fuel line; drive means for driving said fuel pump, said drive means comprising an electric motor; a flow meter for measuring fuel flow rate and generating a flow meter signal proportional to the fuel flow rate; and control means for receiving said flow meter signal and sending a variable output to said drive means for variably driving the speed of said drive means, said variable output being dependent on said flow meter signal.
2. An engine fuel metering device, as claimed in Claim 1, further comprising: a tachometer sensor, operatively connected to said control means, for measuring a fuel pump speed and generating a tachometer signal proportional to the speed, wherein said control means receives said tachometer signal, wherein said variable output is dependent on said flow meter signal under a first predetermined set of conditions, and wherein said variable output is dependent on said tachometer signal under a second predetermined set of conditions.
3. An engine fuel metering device, as claimed in Claim 2, further comprising: a metering valve operatively connected to said control means and positioned adjacent said fuel line for - -
selectably controlling the fuel flow rate through said fuel line; and a valve position sensor, operatively connected to said control means, for sensing the position of said metering valve and generating a valve position signal proportional to the position of said metering valve, wherein said variable output is sent to said metering valve to control the position thereof and is dependent on said valve position signal under a third predetermined set of conditions.
4. An engine fuel metering device, as claimed in Claim 1, further comprising: an engine sensor input means for receiving an engine signal corresponding to an engine parameter, wherein said control means receives said engine signal and said flow meter signal and sends said variable output to said drive means, wherein said variable output is dependent on said engine signal and said flow meter signal.
5. An engine fuel metering device, as claimed in Claim 4, wherein said engine parameter is selected from a group consisting of: engine inlet pressure, engine inlet temperature, engine speed, ambient pressure, exhaust gas temperature, interstage temperature, and interstage pressure.
6. An engine fuel metering device, as claimed in
Claim 1, further comprising: input means for receiving input signals from an external source and providing said input signals to said - 65 -
control means, wherein said variable output is dependent on said input signal and said flow meter signal.
7. An engine fuel metering device, as claimed in Claim 1, further comprising: output means for providing monitoring signals corresponding to an operating parameter of said fuel metering device to an external source.
8. An engine fuel metering device, as claimed in Claim 7, wherein said operating parameter is selected from a group consisting of: drive means current, fuel pump speed, fuel flow rate, fuel temperature, and fuel pressure.
9. An engine fuel metering device, as claimed in Claim 1, wherein said control means comprises a microprocessor.
10. An engine fuel metering device, as claimed in
Claim 1, wherein said variable output comprises a variable voltage.
11. An engine fuel metering device, as claimed in Claim 10, wherein said drive means is a brushless electric motor having a tubular rotor.
12. A method for monitoring and controlling fluid flow in an engine having a fluid pump driven by a variable speed drive, said method comprising the steps of: generating a pump command representing a desired fluid flow rate; providing voltage to the drive to rotate the pump and cause fluid flow therethrough; - -
receiving a fluid flow signal from a flow meter representing an actual fluid flow rate; calculating a first error signal proportional to the difference between the pump command and the fluid flow signal; and generating a control output for modifying the speed of the drive and the pump, wherein the control output is dependent on the first error signal.
13. A method, as claimed in Claim 12, further comprising the steps of: receiving a tachometer signal from a tachometer representing a speed of the fluid pump; and calculating a second error signal proportional to the difference between the pump command and the tachometer signal, wherein the control output is proportional to the first error signal under a first predetermined set of conditions, and wherein the control output is dependent on the second error signal under a second predetermined set of conditions.
14. A method, as claimed in Claim 13, wherein the first predetermined set of conditions corresponds with the first error signal falling at or below a predetermined value, and wherein the second predetermined set of conditions corresponds with the first error signal exceeding the predetermined value.
15. A method, as claimed in Claim 13, further comprising the steps of: - -
receiving a valve position signal representing the position of a fluid metering valve; directing the fluid pump to a constant speed under a third predetermined set of conditions; and calculating a third error signal proportional to the difference between the pump command and the valve position signal, wherein the control output is sent to the fluid metering valve and is dependent on the third error signal under the third predetermined set of conditions.
16. A method, as claimed in Claim 15, wherein the third predetermined set of conditions corresponds with a defect in the fluid flow signal and the tachometer signal.
17. A method, as claimed in Claim 12, further comprising the step of: receiving an engine signal from an engine sensor representing an engine parameter, wherein the pump command is dependent on the engine signal.
18. A method, as claimed in Claim 17, wherein the engine parameter is selected from the group consisting of: engine inlet pressure, engine inlet temperature, engine speed, ambient pressure, exhaust gas temperature, interstage temperature, and interstage pressure.
19. A method, as claimed in Claim 12, further comprising the step of: receiving an input signal from an external source, wherein the pump command is dependent on the input signal.
20. A method, as claimed in Claim 12, further comprising the step of: generating an output signal corresponding to an operating parameter of the fluid pump.
21. A method, as claimed in Claim 20, wherein said operating parameter is selected from the group consisting of: fluid pump speed, fluid flow rate, fluid temperature, and fluid pressure.
22. A method for heating a fluid in an engine having a fluid pump driven by an electric motor, said method comprising the steps of: sending an illegal commutation command to the electric motor to stall the motor, thereby generating heat; and dissipating the heat to at least a portion of the fluid.
23. A method, as claimed in Claim 22, wherein said step of dissipating heat in accomplished by positioning the motor in heat sink relationship with the fluid.
24. A method, as claimed in Claim 22, further comprising: sending a legal commutation command to the electric motor to rotate the motor and fluid pump to pump at least a portion of the fluid.
25. A method, as claimed in Claim 22, wherein said steps of sending an illegal command, dissipating heat, and sending a legal command are performed sequentially to heat the fluid in the engine. - -
26. A method, as claimed in Claim 22, wherein the fluid is fuel.
27. A method, as claimed in Claim 22, wherein the fluid is oil.
28. An engine oil pumping device for a gas turbine engine, said device comprising: an oil pump for pumping oil through an oil line to a gas turbine engine; drive means for driving said oil pump; control means for sending a variable output to said drive means for variably controlling the speed of said drive means; and a flow meter for measuring oil flow rate and generating a flow meter signal proportional to the oil flow rate.
29. An engine oil pumping device, as claimed in Claim 28, further comprising: a tachometer sensor for measuring an oil pump speed and generating a tachometer signal proportional to the speed, wherein said control means received said tachometer signal, and wherein said variable output is dependent on said flow meter signal under a first predetermined set of conditions, and wherein said variable output is dependent on said tachometer signal under a second predetermined set of conditions.
30. An engine oil pumping device, as claimed in Claim 31, further comprising: - -
a metering valve operatively connected to said control means and positioned adjacent said oil line for selectably controlling the oil flow rate through said oil line; and a valve position sensor, operatively connected to said control means, for sensing the position of said metering valve and generating a valve position signal proportional to the position of said metering valve, wherein said variable output is sent to said metering valve to control the position thereof and is dependent on said valve position signal under a third predetermined set of conditions.
31. An engine oil pumping device, as claimed in Claim 28, further comprising: an engine sensor input means for receiving an engine signal corresponding to an engine parameter, wherein said control means receives said engine signal, and wherein said variable output is dependent on said engine signal.
32. An engine oil pumping device, as claimed in Claim 33, wherein said engine parameter is selected from a group consisting of: oil temperature, oil pressure, engine bearing temperature, and exhaust gas temperature.
33. An engine oil pumping device, as claimed in Claim 28, wherein said control means increases the speed of said drive means under a first predetermined set of conditions.
34. An engine oil pumping device, as claimed in Claim 35, wherein said first predetermined set of conditions is selected from the group consisting of: increased pump wear, increased oil temperature, increased bearing temperature, increased exhaust gas temperature, and decreased oil pressure.
35. An engine oil pumping device, as claimed in
Claim 28, wherein said control means decreases the speed of said drive means under a second predetermined set of conditions.
36. An engine oil pumping device, as claimed in Claim 37, wherein said second predetermined set of conditions is selected from the group consisting of: decreased oil temperature, decreased bearing temperature, decreased exhaust gas temperature, and increased oil pressure.
37. An engine oil pumping device, as claimed in
Claim 28, further comprising: an oil cooling means, connected in parallel to said oil line, for cooling at least a portion of the oil; and an oil cooling valve operatively connected to said control means and positioned at a junction of said oil cooling means and said oil line, wherein said cooling valve in controllable by said control means to selectively control the amount of oil which is diverted to said cooling means.
38. An engine oil pumping device, as claimed in Claim 28 , further comprising: output means for providing monitoring signals corresponding to an operating parameter to an external source.
39. An engine oil pumping device, as claimed in Claim 40, wherein said operating parameter is selected from a group consisting of: drive means current, oil pump speed, oil flow rate, oil temperature, and oil pressure.
40. An engine oil pumping device, as claimed in Claim 28, wherein said control means comprises a microprocessor.
41. An engine oil pumping device, as claimed in Claim 28, wherein said drive means is an electric motor and wherein said variable output comprises a variable voltage.
42. An engine oil pumping device, as claimed in Claim 43, wherein said drive means is a brushless electric motor having a tubular rotor.
43. An engine control system for monitoring and controlling the operation of a gas turbine engine, comprising: a variable speed electric fuel pump capable of supplying fuel to the engine; a variable speed electric oil pump capable of supplying oil to the engine; and control means, operatively connected to said fuel pump and said oil pump, for generating a fuel control voltage for controlling a speed of said fuel pump and an oil control voltage for controlling a speed of said oil pump.
44. An engine control system, as claimed in Claim 45, wherein said control means comprises: input means for receiving input signals, wherein said fuel control voltage and said oil control voltage are dependent on said input signal.
45. An engine control system, as claimed in Claim 46, wherein said control means is capable of receiving input signals which correspond to engine parameters selected from a group consisting of: engine inlet pressure, engine inlet temperature, engine speed, ambient pressure, exhaust gas temperature, fuel temperature, fuel pressure, oil temperature, and oil pressure.
46. An engine control system, as claimed in Claim 45, wherein said control means further comprises: output means for providing monitoring signals corresponding to a control system parameter.
47. An engine control system, as claimed in Claim 48, wherein said control system parameter is selected from a group consisting of: fuel pump current, oil pump current, fuel pump speed, oil pump speed, fuel flow rate, oil flow rate.
48. An engine control system, as claimed in Claim 45, wherein said control means comprises at least one microprocessor.
49. An engine control system, as claimed in Claim 45, wherein said electric fuel pump includes a brushless electric motor having a tubular rotor. - 74 -
50. An engine control system, as claimed in Claim 45, wherein said electric oil pump includes a brushless electric motor having a tubular rotor.
51. A gas turbine engine having an electric engine control system for monitoring and controlling the operation of the engine, comprising: a gas turbine engine; a variable speed electric fuel pump capable of supplying fuel to said engine; a variable speed electric oil pump capable of supplying oil to said engine; and control means, operatively connected to said fuel pump and said oil pump, for generating a fuel control voltage for controlling a speed of said fuel pump and an oil control voltage for controlling a speed of said oil pump.
52. A gas turbine engine, as claimed in Claim 53, wherein each of said fuel pump, said oil pump, and said control means are collocated in one area of said engine.
53. A gas turbine engine, as claimed in Claim 54, wherein each of said fuel pump, said oil pump, and said control means are collocated on the jet core housing of said engine.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE69427227T DE69427227T2 (en) | 1993-03-03 | 1994-03-02 | INTEGRATED MACHINE CONTROL SYSTEM FOR A GAS TURBINE MACHINE |
| AU64430/94A AU6443094A (en) | 1993-03-03 | 1994-03-02 | Integrated engine control system for a gas turbine engine |
| EP94912173A EP0694120B1 (en) | 1993-03-03 | 1994-03-02 | Integrated engine control system for a gas turbine engine |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2645593A | 1993-03-03 | 1993-03-03 | |
| US026,455 | 1993-03-03 | ||
| US11994893A | 1993-09-10 | 1993-09-10 | |
| US119,948 | 1993-09-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1994020739A2 WO1994020739A2 (en) | 1994-09-15 |
| WO1994020739A3 WO1994020739A3 (en) | 1994-10-27 |
| WO1994020739B1 true WO1994020739B1 (en) | 1994-12-08 |
Family
ID=26701270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/002269 WO1994020739A2 (en) | 1993-03-03 | 1994-03-02 | Integrated engine control system for a gas turbine engine |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP1067282A2 (en) |
| AU (1) | AU6443094A (en) |
| CA (1) | CA2157688A1 (en) |
| DE (1) | DE69427227T2 (en) |
| WO (1) | WO1994020739A2 (en) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0126371D0 (en) * | 2001-11-02 | 2002-01-02 | Rolls Royce Plc | Gas turbine engines |
| EP1130221A1 (en) * | 2000-02-14 | 2001-09-05 | Techspace Aero S.A. | Method and device for aeronautic engine lubrication |
| GB0318400D0 (en) | 2003-08-06 | 2003-09-10 | Rolls Royce Plc | A fluid system |
| US7481627B2 (en) | 2004-08-30 | 2009-01-27 | Mat Industries Llc | Air compressor tools that communicate with an air compressor |
| US20060045749A1 (en) | 2004-08-30 | 2006-03-02 | Powermate Corporation | Air compressor utilizing an electronic control system |
| GB0525573D0 (en) * | 2005-12-16 | 2006-01-25 | Rolls Royce Plc | Engine Health Monitoring |
| DE102006023237A1 (en) * | 2006-05-18 | 2007-11-22 | Mtu Aero Engines Gmbh | gas turbine |
| US7779811B1 (en) * | 2006-09-13 | 2010-08-24 | General Electric Company | Thermoelectrically cooled components for distributed electronics control system for gas turbine engines |
| US9091214B2 (en) * | 2007-06-28 | 2015-07-28 | United Technologies Corporation | Reduced gearbox size by separate electrically powered engine oil system |
| US7931124B2 (en) | 2007-12-12 | 2011-04-26 | United Technologies Corporation | On-demand lubrication system and method for improved flow management and containment |
| EP2072762B1 (en) | 2007-12-21 | 2012-05-30 | Techspace Aero SA | Method for controlling consumption and detecting leaks in a turbomachine lubrication system |
| US8954228B2 (en) | 2008-12-30 | 2015-02-10 | Rolls-Royce Corporation | Gas turbine engine failure detection |
| US8572974B2 (en) | 2009-07-31 | 2013-11-05 | Hamilton Sundstrand Corporation | Variable speed and displacement electric fluid delivery system for a gas turbine engine |
| FR2953562B1 (en) * | 2009-12-07 | 2012-11-16 | Snecma | METHOD FOR COOLING EQUIPMENT ARRANGED IN THE VICINITY OF THE HOT ZONE OF A TURBOJET ENGINE AND CORRESPONDING DEVICE |
| FR2960592B1 (en) * | 2010-05-27 | 2016-02-26 | Snecma | METHOD FOR STARTING AN AIRCRAFT ENGINE |
| FR2988978B1 (en) * | 2012-03-28 | 2014-06-27 | Safran | FADEC BOX SUPPORT IN COMPOSITE MATERIAL |
| US20130330206A1 (en) | 2012-06-07 | 2013-12-12 | Hamilton Sundstrand Corporation | Integrated fuel pump and control |
| FR2992355B1 (en) * | 2012-06-21 | 2014-07-18 | Snecma | METHOD AND DEVICE FOR ADJUSTING A THRESHOLD VALUE OF FUEL FLOW |
| US8997493B2 (en) * | 2013-02-20 | 2015-04-07 | Hamilton Sunstrand Corporation | Auxiliary power unit generator |
| US10294866B2 (en) | 2013-11-20 | 2019-05-21 | Woodward, Inc. | Parallel metering pressure regulation system with integrated flow meter placement |
| FR3021359B1 (en) * | 2014-05-26 | 2019-06-07 | Safran Power Units | DEVICE AND METHOD FOR PREHEATING FUEL IN A TURBOMACHINE |
| FR3050761B1 (en) * | 2016-04-27 | 2019-07-05 | Safran Aircraft Engines | CONTROL OF OIL FLOW IN A COOLING CIRCUIT OF A TURBOMACHINE |
| US10287986B2 (en) * | 2016-07-29 | 2019-05-14 | United Technologies Corporation | Gas turbine engine fuel system prognostic algorithm |
| CN106640379A (en) * | 2016-10-17 | 2017-05-10 | 中国民用航空飞行学院 | Starting and oil-supply system of micro turbine engine and starting and oil-supply method thereof |
| DE102017115400A1 (en) * | 2017-07-10 | 2019-01-10 | Endress + Hauser Messtechnik Gmbh+Co. Kg | measuring system |
| JP6835249B2 (en) | 2017-11-16 | 2021-02-24 | 株式会社Ihi | Fuel supply control device |
| CA3085284C (en) | 2017-12-14 | 2022-07-19 | Ihi Corporation | Fuel supply device |
| FR3096412B1 (en) * | 2019-05-24 | 2022-07-22 | Safran Aircraft Engines | FUEL SUPPLY SYSTEM OF A TURBOMACHINE WITH FUEL FLOW REGULATION |
| CN110920914B (en) * | 2019-12-06 | 2021-04-06 | 南京航空航天大学 | Comprehensive thermal management and regulation system for airplane |
| FR3104640B1 (en) * | 2019-12-13 | 2021-12-10 | Safran Aircraft Engines | Aircraft turbomachine hydraulic equipment plate |
| CN114265368B (en) * | 2021-12-07 | 2023-07-25 | 中国航发控制系统研究所 | Combined state self-adaptive estimation method for aero-engine servo control system |
| US11773807B1 (en) | 2022-05-10 | 2023-10-03 | Honeywell International Inc. | Actuator systems for thrust reverser |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3596467A (en) * | 1969-10-31 | 1971-08-03 | Avco Corp | Integrated fuel control system for a gas turbine engine |
| US4004412A (en) * | 1974-12-20 | 1977-01-25 | Chandler Evans Inc. | Gas turbine engine fuel metering system |
| US4208871A (en) * | 1977-08-29 | 1980-06-24 | The Garrett Corporation | Fuel control system |
| US4441156A (en) * | 1981-01-21 | 1984-04-03 | Teledyne Industries, Inc. | Integrated fuel management system |
| GB8408083D0 (en) * | 1984-03-29 | 1984-05-10 | Penny Turbines Ltd Noel | Fuel system |
| US4922708A (en) * | 1989-02-02 | 1990-05-08 | Williams International Corporation | Starting system for turbine engines |
| US5092748A (en) * | 1990-09-06 | 1992-03-03 | Ketema Aerospace & Electronics Division | Fuel metering pump system |
| US5180034A (en) * | 1990-12-06 | 1993-01-19 | General Electric Co. | Adaptive lubrication oil system |
| FR2685735B1 (en) * | 1991-12-31 | 1995-03-24 | Snecma | FUEL INJECTION AND DOSING SYSTEM DELIVERED IN A TURBOMACHINE. |
-
1994
- 1994-03-02 EP EP00120533A patent/EP1067282A2/en not_active Withdrawn
- 1994-03-02 DE DE69427227T patent/DE69427227T2/en not_active Expired - Lifetime
- 1994-03-02 CA CA002157688A patent/CA2157688A1/en not_active Abandoned
- 1994-03-02 AU AU64430/94A patent/AU6443094A/en not_active Abandoned
- 1994-03-02 WO PCT/US1994/002269 patent/WO1994020739A2/en active IP Right Grant
- 1994-03-02 EP EP94912173A patent/EP0694120B1/en not_active Expired - Lifetime
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