WO2013034829A1 - Circuits d'huile et de carburant dans une turbomachine et procédé de gestion d ' échanges thermiques - Google Patents
Circuits d'huile et de carburant dans une turbomachine et procédé de gestion d ' échanges thermiques Download PDFInfo
- Publication number
- WO2013034829A1 WO2013034829A1 PCT/FR2012/051904 FR2012051904W WO2013034829A1 WO 2013034829 A1 WO2013034829 A1 WO 2013034829A1 FR 2012051904 W FR2012051904 W FR 2012051904W WO 2013034829 A1 WO2013034829 A1 WO 2013034829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- fuel
- exchanger
- heat exchanger
- air
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/224—Heating fuel before feeding to the burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/213—Heat transfer, e.g. cooling by the provision of a heat exchanger within the cooling circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the invention relates to oil and fuel circuits in a turbomachine, such as a turboprop or an airplane turbojet engine.
- a main oil / fuel heat exchanger arranged in the oil and fuel circuits is used downstream or upstream of an oil / air heat exchanger mounted in the oil circuit to cool the oil. oil coming out of the engine of the turbomachine.
- the oil / air heat exchanger is traversed or swept by a flow of air coming from outside the turbomachine.
- a bypass line is mounted on this exchanger between the oil inlet and the oil outlet and a control valve controls the flow of oil flowing through the oil / air heat exchanger and into the bypass line. to control the oil temperature exiting the oil / air heat exchanger and entering the main oil / fuel heat exchanger.
- the valve In cold operating conditions, such as, for example, when the aircraft takes off, the valve is controlled to deflect the flow of oil towards the bypass line, which flow of oil then flows into the main oil / fuel exchanger. . In this way, the oil does not pass through the oil / air exchanger and is not cooled, which makes it possible to heat the fuel and to guarantee a minimum temperature for the fuel supplying the injectors and the servovalves.
- the valve controls the passage of oil in the oil / air exchanger, which makes it possible to cool the oil and thus prevents its coking.
- the cooled oil then flows into the main oil / fuel heat exchanger and yields a smaller amount of heat to the fuel, which prevents it from coking in the fuel injectors.
- the secondary oil / fuel heat exchanger contributes to a significant heating of the fuel supplying the servovalves, which increases the risk of overheating the fuel and thus coking it.
- the invention aims in particular to provide a simple, economical and effective solution to the problems mentioned above, to avoid the disadvantages of the known technique.
- oil and fuel circuits in a turbomachine comprising a main oil / fuel heat exchanger crossed by the oil and fuel flow rates for the cooling of the oil as well as a fuel exchanger.
- oil / air heat mounted in the oil circuit and traversed by a cooling air flow, a bypass line mounted between the inlet and the oil outlet of the oil / air exchanger and a control valve of the passage of the oil flow in the bypass line and in the oil / air exchanger, characterized in that an oil / fuel secondary heat exchanger is mounted in the bypass line.
- the valve controls the circulation of oil in the oil / air exchanger and limits or prevents the passage of oil in the bypass duct through the secondary oil / fuel heat exchanger.
- heating of the fuel by calorific transfer from the oil flow to the fuel flow is avoided, thereby reducing the risk of coking the fuel leaving the secondary oil / air heat exchanger.
- the valve controls the flow of oil in the bypass line through the secondary oil / fuel heat exchanger, which allows a heating of the fuel supplying the servovalves.
- the arrangement of the secondary heat exchanger in the bypass line allows decoupling of the fuel cooling function under hot operating conditions and the fuel heating function under cold operating conditions.
- the invention makes it possible to reduce the pressure losses and backpressure that applies to the pumps upstream of the heat exchangers since there are only two heat exchangers in series under all operating conditions. . Indeed, in cold conditions, only the main oil / fuel heat exchanger and the oil / air heat exchanger are in series in the oil circuit and in hot conditions, only the main oil / air heat exchanger and the secondary oil / fuel heat exchanger are in series in this circuit.
- the bypass line and the oil / air exchanger are connected by a common oil outlet to an oil inlet of the main oil / fuel exchanger.
- the oil fluid leaving the oil / air exchanger and the secondary oil / fuel exchanger circulates directly in the main oil / fuel exchanger. It is thus possible by controlling the flow of oil passing through the oil / air exchanger and the secondary oil / fuel exchanger to control the temperature of the oil entering the main oil / fuel exchanger and thus to control the temperature of the fuel leaving the main exchanger.
- control valve is traversed by the oil flow and is arranged upstream or downstream of the oil / air exchanger and the secondary oil / fuel exchanger.
- the control valve may be a two-way or three-way valve. It can be of all-or-nothing type or an open / close degree control valve.
- the secondary oil / fuel heat exchanger is traversed by a feed of hydraulic pressure supply fuel of equipment with variable geometry, which allows to simply heat up the flow of fuel at low flow that feeds organs of control of equipment with variable geometry.
- the invention also relates to a turbomachine, such as an airplane turbojet or turboprop, comprising oil and fuel circuits as described above.
- the invention also relates to a heat exchange management method between oil and fuel circuits of a turbomachine as described above, this method consisting in controlling the control valve to prohibit or allow the passage of the fuel. oil in the secondary oil / fuel exchanger and in the oil / air exchanger depending on the oil temperature.
- the method consists in controlling the control valve to prevent the passage of the oil in the secondary oil / fuel exchanger and allow it in the oil / air exchanger when the oil temperature is relatively very high. because of the operating conditions of the turbomachine.
- the method also consists in controlling the control valve to allow the passage of the oil in the secondary oil / fuel exchanger and prohibit it in the oil / air exchanger when the temperature of the the oil is relatively very low because of the operating conditions of the turbomachine. This avoids the cooling of the oil in the oil / air exchanger and allows the fuel to be sufficiently heated by means of the main and secondary heat exchangers.
- FIG. 1 is a schematic perspective view of a turbomachine of a known type
- FIG. 2 is a partial schematic representation of the oil and fuel circuits according to the prior art
- FIG. 3 is a partial schematic representation of the oil and fuel circuits according to the invention.
- a turbomachine 10 comprises a combustion chamber 12, the combustion gases from the chamber 12 driving a high pressure turbine 14 and a low pressure turbine 16.
- the high pressure turbine 14 is coupled by a shaft to a high pressure compressor 18 arranged upstream of the combustion chamber 12 and supplying the latter with pressurized air.
- the low-pressure turbine 16 is coupled by another shaft to a fan 20 arranged at the upstream end of the turbomachine 10.
- a transmission box 22, or accessory box, is connected by a mechanical power take-off 24 to the high-pressure turbine shaft and comprises a set of drive gears of different equipment of the turbomachine, such as pumps and generators, especially electric.
- FIG. 2 represents oil and fuel circuits of the turbomachine of FIG. 1.
- the fuel circuit 26 comprises, from upstream to downstream in the direction of flow of the fuel, a fuel tank 28, a low pressure pump 30, a high pressure pump 32 and a metering unit 34 of the known fuel. under the acronym FMU (Fuel Metering Unit).
- FMU Full Metering Unit
- the fuel passes into a main oil / fuel heat exchanger 36.
- the fuel flow is divided into a first fraction fed to the fuel.
- dosing unit 34 for supply a regulated fuel flow to injectors 38 of the combustion chamber 12 and a second fraction passing through an oil / fuel secondary heat exchanger 40.
- the fuel is supplied to the unit metering device 34 which supplies pressurized servovalves 42 for controlling variable-geometry members such as variable-pitch stator vanes.
- the oil circuit 44 comprises, from upstream to downstream in the direction of flow of the oil, an oil reservoir 46, 48 feed pumps of different sets 50 using oil of lubrication and / or cooling, and recovery pumps 52 for recirculating oil to the reservoir 46.
- the overall oil flow may include oil used for the lubrication of the accessory box. and for the lubrication and cooling of one or more electric generators.
- a pipe 56 is mounted in the bypass oil circuit on the exchanger 54 and comprises an inlet arranged between the output of the secondary oil / fuel heat exchanger 40 and the inlet of the oil / air heat exchanger 54, and an outlet connected to a valve 58 mounted at the outlet of the exchanger 54 for controlling the passage of the oil flow in the bypass line 56 or through the oil / air exchanger 54.
- the control valve 58 is arranged upstream of the main oil / fuel heat exchanger 36. The oil exiting the main oil / fuel heat exchanger 36 then flows to the oil reservoir 46.
- the oil / air heat exchanger 54 may be of the surface-cooling type, that is to say comprising oil ducts swept by a cold air flow coming from a bypass air flow. turbojet engine commonly called secondary air flow. Such an exchanger is for example housed on a wall of the secondary flow channel immediately downstream of the fan 20 ( Figure 1).
- the oil / air heat exchanger 54 may also be of the air / oil plate type and traversed by a stream of air taken from the secondary air stream and reinjected at its outlet therein.
- this architecture of the oil and fuel circuits provides in cold operating conditions that the oil leaving the recovery pumps 52 passes through the second secondary heat exchanger oil / fuel 40, which allows to heat up the flow of fuel.
- fuel supplying servovalves 42 for controlling members with variable geometry.
- the valve 58 is controlled to prohibit the passage of oil in the oil / air heat exchanger 54 to prevent too much cooling of the oil flow.
- the flow of oil thus circulates in the bypass line 56 and passes through the main oil / fuel exchanger 36 and allows a heating of the supply fuel of the injectors 38 of the combustion chamber 12.
- the hot oil leaving the recovery pumps 52 flows through the secondary oil / fuel heat exchanger 40, which contributes to further heating up the fuel when it would rather be limited to limit its heating. , and which increases the risk of overheating and coking of the feed fuel of the servovalves 52.
- the valve 58 closes the oil flow in the branch pipe 56 and the oil flows through the oil / air exchanger so as to cool the oil flow, which passes through the main oil / fuel heat exchanger 36 and cools the fuel flow supplying the injectors 38.
- the series assembly of the secondary oil / fuel heat exchanger 40, the oil / air heat exchanger 54 and the heat exchanger of main heat oil / fuel 36 induces high pressure losses in the oil circuit, in particular in cold operating conditions when the bypass line 56 is closed, the oil passing successively through the three heat exchangers 40, 54, 36. These pressure losses induce a strong back pressure on the oil recovery pumps 52.
- This back pressure corresponds to the sum of the inlet pressure of the oil reservoir, the pressure difference between the input and output of the oil / fuel primary heat exchanger 36, the pressure difference between the inlet and the outlet of the control valve 58, the pressure difference between the inlet and the outlet of the oil / air heat exchanger 54, and the pressure difference between the inlet and the outlet of the secondary oil / fuel heat exchanger 40.
- This back pressure imposes significant dimensions for the recovery pumps 52, which It weighs the turbomachine and can cause defusing of the oil recovery pumps.
- the invention provides a solution to this problem by proposing to mount the secondary oil / fuel heat exchanger 60 in the bypass line 62 ( Figure 3).
- the secondary oil / fuel heat exchanger 60 is connected at the inlet to the fuel flow and at the output to servovalves 42 for controlling members with variable geometry. via the dosing unit 34.
- the valve 64 In hot operating conditions, typically for an oil temperature of the order of 140 ° C., the valve 64 is controlled so as to close the circulation of oil in the secondary oil / fuel heat exchanger 60 and allow the passage of the oil in the oil / air heat exchanger 54. This cooled oil then circulates in the main oil / fuel heat exchanger 36, which limits the heating of the fuel supplying the injectors 38 and the servo valves 42 of FIG. control of members with variable geometry. Thus, in conditions operating hot, the hot oil no longer passes through the secondary heat exchanger oil / fuel 60 which does not induce heating of the feed fuel servo valves 42.
- valve 64 is controlled so as to allow the passage of oil in the bypass line 62 and prohibit the passage of oil in the oil / air fuel exchanger 54, which allows a heating of the fuel by the secondary oil / fuel heat exchanger 60.
- the mounting of the oil / fuel secondary heat exchanger 60 in the bypass line 62 in parallel on the oil / air heat exchanger 54 makes it possible to reduce the pressure drops in the oil circuit since whatever the state of the control valve 64, there are more than two heat exchangers which are arranged in series and not three as in the prior art, Indeed, in cold operating conditions only the main heat exchangers 36 and secondary 60 are in series and in hot operating conditions, only the main oil / fuel heat exchanger 36 and the oil / air heat exchanger 54 are in series.
- the valve 64 may be a two-way valve mounted in the branch line 62 between the inlet thereof and the inlet of the secondary oil / fuel exchanger 62 or between the outlet of the bypass line 62 and the outlet the secondary oil / fuel exchanger 60.
- the two-way valve can be mounted in the oil passage 66 of the oil / air heat exchanger 54 between the inlet of this line 66 and the inlet of the oil / air heat exchanger. 54 or between the outlet of this line and the outlet of the oil / air heat exchanger 54.
- the valve 64 is a three-way valve mounted upstream of the oil / air heat exchanger 54 and the secondary oil / fuel heat exchanger 60, the valve three channels connecting the inputs of the oil / air heat exchanger 54 and the secondary oil / fuel heat exchanger 60.
- the three-way valve can be mounted downstream of the oil / air heat exchanger 54 and the oil / fuel secondary heat exchanger 60, the three-way valve connecting the outputs of the oil / air heat exchanger 54 and the secondary oil / fuel exchanger 60.
- the valve 64 may be an on / off valve so as to completely close or open the oil supply of one of the oil / air heat exchanger 54 and the oil / fuel secondary heat exchanger 60 and completely opening or closing, respectively, the oil supply of the other of the oil / air heat exchanger 54 and the oil / fuel secondary heat exchanger 60.
- the valve 64 may further be an opening / closing degree control valve.
- a valve may be a two-way valve or a three-way valve described above.
- the opening and closing of the valve 64 so as to allow or prohibit the passage of oil in the secondary oil / fuel heat exchanger 60 and in the oil / air heat exchanger 54 are controlled according to the temperature oil.
- a temperature sensor is mounted between the feed pump 48 and the assemblies 50 for receiving the lubricating and cooling oil. The temperature value of the measured oil is transmitted to a calculator as well as to a display device in the cockpit of the aircraft.
- the valve 64 is controlled so as to prevent passage through the bypass line 62, the oil then flowing through the exchanger of oil / air heat 54.
- the valve 64 is controlled so as to prohibit the passage of the oil / air heat exchanger 60, the oil then flowing in the bypass line through the secondary heat exchanger oil / fuel 60.
- valve 64 For temperature values between T1 and T2, and when the valve 64 is an opening degree-regulating valve, it may be advantageous to regulate the degree of opening / closing of the valve 64 so as to regulate the flow rate.
- the valve 64 may also be a thermostatic valve comprising a thermosensitive probe designed to expand and contract as a function of temperature.
- the thermosensitive probe is designed to actuate the opening or closing of the valve for a predetermined temperature threshold value so as to open or close the flow of oil to the secondary oil / fuel exchanger 60 and to the air / heat exchanger. oil 54.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1404000.0A GB2509012B (en) | 2011-09-07 | 2012-08-14 | Oil and fuel circuits in a turbine engine |
US14/343,185 US9739198B2 (en) | 2011-09-07 | 2012-08-14 | Oil and fuel circuits in a turbine engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1157953 | 2011-09-07 | ||
FR1157953A FR2979671B1 (fr) | 2011-09-07 | 2011-09-07 | Circuits d'huile et de carburant dans une turbomachine |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2013034829A1 true WO2013034829A1 (fr) | 2013-03-14 |
WO2013034829A9 WO2013034829A9 (fr) | 2013-06-20 |
Family
ID=46829813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2012/051904 WO2013034829A1 (fr) | 2011-09-07 | 2012-08-14 | Circuits d'huile et de carburant dans une turbomachine et procédé de gestion d ' échanges thermiques |
Country Status (4)
Country | Link |
---|---|
US (1) | US9739198B2 (fr) |
FR (1) | FR2979671B1 (fr) |
GB (1) | GB2509012B (fr) |
WO (1) | WO2013034829A1 (fr) |
Families Citing this family (31)
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FR2979671B1 (fr) * | 2011-09-07 | 2017-02-10 | Snecma | Circuits d'huile et de carburant dans une turbomachine |
FR3002591B1 (fr) | 2013-02-27 | 2015-04-03 | Snecma | Procede et dispositif de regulation de refroidissement d'huile d'une turbomachine |
EP3044443B1 (fr) * | 2013-09-10 | 2018-08-08 | United Technologies Corporation | Système de gestion de combustible pour un moteur à turbine |
GB201504005D0 (en) | 2015-03-10 | 2015-04-22 | Rolls Royce Plc | Engine fuel-oil heat exchange system |
GB201505255D0 (en) * | 2015-03-27 | 2015-05-13 | Rolls Royce Plc | Gas turbine engine fluid heat management system |
DE102015112325A1 (de) * | 2015-07-28 | 2017-02-02 | Rolls-Royce Deutschland Ltd & Co Kg | Flugtriebwerk mit einer Treibstoffversorgungseinrichtung und mit wenigstens einem einen Hydraulikfluidspeicher umfassenden Hydraulikfluidkreislauf mit einem Wärmetauscher |
WO2017083107A1 (fr) * | 2015-11-09 | 2017-05-18 | Borgwarner Inc. | Système de transfert de chaleur pour turbocompresseur |
US11125160B2 (en) * | 2015-12-28 | 2021-09-21 | General Electric Company | Method and system for combination heat exchanger |
EP3418505B1 (fr) * | 2017-06-23 | 2022-04-13 | HS Marston Aerospace Limited | Circuit de lubrification chauffé |
FR3091903B1 (fr) * | 2019-01-23 | 2020-12-25 | Safran Aircraft Engines | Gicleur de liquide lubrifiant à débit limité |
IT201900011391A1 (it) | 2019-07-10 | 2021-01-10 | Ge Avio Srl | Impianto di lubrificazione |
US11492969B2 (en) * | 2019-12-09 | 2022-11-08 | Meggitt Aerospace Limited | Engine thermal management methods and control systems |
FR3104641B1 (fr) * | 2019-12-17 | 2021-12-31 | Safran Aircraft Engines | Circuit d’alimentation en carburant d’une turbomachine, turbomachine et aéronef ayant celui-ci |
FR3106374B1 (fr) * | 2020-01-21 | 2022-01-21 | Safran Aircraft Engines | Circuit d’alimentation en carburant pour une chambre de combustion d’une turbomachine |
GB2599686A (en) * | 2020-10-09 | 2022-04-13 | Rolls Royce Plc | An improved turbofan gas turbine engine |
CN112943456B (zh) * | 2021-03-12 | 2022-08-12 | 华能江阴燃机热电有限责任公司 | 一种燃气-蒸汽联合循环机组辅机冷却水系统 |
US11591964B2 (en) * | 2021-06-17 | 2023-02-28 | Pratt & Whitney Canada Corp. | Oil cooling system for aircraft engine |
GB202219399D0 (en) | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Gas turbine engine heat exchange |
GB202219408D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Operating a gas turbine engine |
GB202219385D0 (en) | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Aircraft combustion systems |
GB202219395D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Gas turbine performance |
GB202219380D0 (en) | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Gas turbine operating conditions |
GB202219398D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | A fuelling system |
GB202219394D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Management of fuel |
GB202219388D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Lean burn combustion system |
GB202219390D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Gas turbine operation |
GB202219393D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Fuel delivery system |
GB202219409D0 (en) * | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Fuel management system |
GB202219391D0 (en) | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Fuel oil heat exchange |
GB202219384D0 (en) | 2022-12-21 | 2023-02-01 | Rolls Royce Plc | Aircraft fuelling |
US12129043B1 (en) * | 2023-08-28 | 2024-10-29 | Pratt & Whitney Canada Corp. | Aircraft heat exchanger bypass flow control with electric motor |
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GB201001410D0 (en) * | 2010-01-29 | 2010-03-17 | Rolls Royce Plc | Oil cooler |
FR2979671B1 (fr) * | 2011-09-07 | 2017-02-10 | Snecma | Circuits d'huile et de carburant dans une turbomachine |
US9097169B2 (en) * | 2011-10-11 | 2015-08-04 | Pratt & Whitney Canada Corp. | Gas turbine engine heat management system |
US8495857B2 (en) * | 2011-10-31 | 2013-07-30 | United Technologies Corporation | Gas turbine engine thermal management system |
US9334802B2 (en) * | 2011-10-31 | 2016-05-10 | United Technologies Corporation | Gas turbine engine thermal management system |
FR2993340B1 (fr) * | 2012-07-11 | 2014-08-08 | Snecma | Vanne pour le controle d'echanges thermiques d'un circuit d'huile |
DE102012015454A1 (de) * | 2012-08-03 | 2014-05-28 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Regelung der Kraftstofftemperatur einer Gasturbine |
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2011
- 2011-09-07 FR FR1157953A patent/FR2979671B1/fr active Active
-
2012
- 2012-08-14 US US14/343,185 patent/US9739198B2/en active Active
- 2012-08-14 WO PCT/FR2012/051904 patent/WO2013034829A1/fr active Application Filing
- 2012-08-14 GB GB1404000.0A patent/GB2509012B/en active Active
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FR1061138A (fr) | 1952-07-31 | 1954-04-08 | Dentifaire | Appareillage pour radioscopie dentaire |
US4151710A (en) * | 1977-03-11 | 1979-05-01 | United Technologies Corporation | Lubrication cooling system for aircraft engine accessory |
US4773212A (en) * | 1981-04-01 | 1988-09-27 | United Technologies Corporation | Balancing the heat flow between components associated with a gas turbine engine |
EP1857638A2 (fr) * | 2006-05-11 | 2007-11-21 | United Technologies Corporation | Système de gestion thermique pour moteurs de réacteur à double flux |
FR2951228A1 (fr) | 2009-10-13 | 2011-04-15 | Snecma | Procede et systeme de gestion d'echanges thermiques entre fluides dans une turbomachine |
Also Published As
Publication number | Publication date |
---|---|
US20140223917A1 (en) | 2014-08-14 |
FR2979671A1 (fr) | 2013-03-08 |
FR2979671B1 (fr) | 2017-02-10 |
GB2509012A (en) | 2014-06-18 |
US9739198B2 (en) | 2017-08-22 |
GB2509012B (en) | 2018-07-18 |
GB201404000D0 (en) | 2014-04-23 |
WO2013034829A9 (fr) | 2013-06-20 |
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