EP2561193A1 - Procede et systeme de surveillance du niveau d'huile contenue dans un reservoir d'un moteur d'aeronef - Google Patents
Procede et systeme de surveillance du niveau d'huile contenue dans un reservoir d'un moteur d'aeronefInfo
- Publication number
- EP2561193A1 EP2561193A1 EP11730375A EP11730375A EP2561193A1 EP 2561193 A1 EP2561193 A1 EP 2561193A1 EP 11730375 A EP11730375 A EP 11730375A EP 11730375 A EP11730375 A EP 11730375A EP 2561193 A1 EP2561193 A1 EP 2561193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measurements
- oil
- engine
- aircraft
- oil level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims description 40
- 238000005259 measurement Methods 0.000 claims abstract description 148
- 230000002159 abnormal effect Effects 0.000 claims abstract description 17
- 230000004931 aggregating effect Effects 0.000 claims abstract description 7
- 230000002776 aggregation Effects 0.000 claims description 15
- 238000004220 aggregation Methods 0.000 claims description 15
- 238000012937 correction Methods 0.000 claims description 9
- 238000012417 linear regression Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 143
- 238000011282 treatment Methods 0.000 description 10
- 239000010705 motor oil Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000001594 aberrant effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000010006 flight Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003442 weekly effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
- F01M11/12—Indicating devices; Other safety devices concerning lubricant level
-
- 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
- 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
- F05D2260/80—Diagnostics
Definitions
- the present invention relates to the general field of aeronautics.
- It relates more particularly to monitoring the oil consumption of an aircraft engine in operation, such as for example a turbomachine.
- a second technique used in some maintenance calculators by the airlines consists in measuring the level of oil contained in the tank before each take-off and after each landing of the aircraft. The oil levels thus measured are then compared with each other in order to estimate the oil consumption on the mission of the aircraft.
- this technique requires the use of relatively accurate oil level sensors.
- this technique does not take into account the amount of oil circulating out of the tank, which can vary according to different parameters (viscosity of the oil, engine speed, etc.).
- the present invention provides an alternative to the aforementioned techniques for obtaining a reliable estimate of the oil consumption of an engine.
- each measurement being associated with an oil temperature and a rotational speed of the engine
- the invention also relates to an oil level monitoring system contained in a tank of an aircraft engine, comprising:
- the invention takes into account the oil level in the tank for estimating the oil consumption of the engine, and is advantageously placed at iso-conditions of engine speed and oil temperature (ie in similar conditions) to make the measured oil levels comparable to each other.
- the aggregated measurements according to the invention are coherent and comparable with one another, and make it possible to easily evaluate the engine oil consumption.
- the invention is based on measurements collected during at least two operational phases of the mission of the aircraft.
- these two phases of operation will correspond to a taxi phase (the taxi phase includes, in the sense of the invention, the taxi phase before take-off and the taxi phase after landing) and to a cruise phase of the mission of the 'aircraft.
- the estimate of engine oil consumption is not limited to only two measurements taken before take-off and after landing of the aircraft, but oil level measurements are also used. other phases of operation of the aircraft, and possibly on several missions of the aircraft.
- This contributes to improving the accuracy of the estimation of the engine oil consumption, and can detect not only abnormal point consumption but also abnormal consumption occurring in the longer term.
- the invention thus makes it possible to apply a technique of the "trend monitoring" type (monitoring of trend in French) to the monitoring of the oil consumption of an engine.
- the monitoring of the oil level is automated and requires little or no human intervention. This limits the inaccuracies.
- the invention is particularly advantageous when discrete resolution sensors are used to measure the oil level in the tank.
- measurements representative of changes in the oil level occurring over a period shorter than a predetermined time limit are excluded.
- the measurements corresponding to aberrant oil levels are eliminated, such as for example a measurement greater than the maximum content of the reservoir, etc.
- the aggregation of the measurements comprises the detection of at least one filling of the tank between two successive missions of the aircraft.
- the aggregation of the measurements can also include the correction of at least one measurement of the oil level according to a difference existing between the oil temperature associated with this measurement and the reference temperature.
- the aggregation of the measurements comprises the application of a linear regression to the selected measurements.
- This regression makes it possible to smooth the curve of the measurements so as to overcome measurement inaccuracies or differences that may appear for example from one mission to another or between the different phases of operation.
- the aggregated measurements are compared with a predetermined threshold representative of an abnormal consumption of oil by the engine.
- the measurements are aggregated over several missions of the aircraft and the aggregated measurements are compared with a reference curve (eg a straight line) representative of a normal consumption of oil by the engine.
- a reference curve eg a straight line
- the monitoring method according to the invention is such that:
- the aggregation of the measurements and the comparison are implemented by a ground device to which the selected measurements have been sent by the aircraft.
- the means for obtaining the plurality of measurements and for selecting the measurements representative of variations in the oil level are embarked on board the aircraft;
- the means for aggregating the selected measurements and for comparing the aggregated measurements with reference data are integrated in a device on the ground;
- the aircraft further comprising means for sending the selected measurements to the ground device.
- This distribution makes it possible to speed up the processing of the ground measurements and to limit the quantity of measurements transmitted during the mission by the aircraft.
- FIG. 1 shows schematically in its environment, a monitoring system according to the invention in a particular embodiment
- FIGS. 2 and 3 represent, in the form of flowcharts, the main steps of a monitoring method according to the invention in a particular embodiment in which it is implemented by the system represented in FIG. 1; and FIG. 4 represents an example of monitoring of the oil level according to the invention in comparison with a reference line.
- FIGS. 2 and 3 represent, in the form of flowcharts, the main steps of a monitoring method according to the invention in a particular embodiment in which it is implemented by the system represented in FIG. 1; and FIG. 4 represents an example of monitoring of the oil level according to the invention in comparison with a reference line.
- FIG. 1 represents, in its environment, a monitoring system 1 of the oil level contained in a tank of an operating aircraft engine (not shown), according to the invention, in a particular embodiment.
- the aircraft engine is for example a turbojet engine. It will be noted, however, that the invention applies to other aircraft engines and in particular other turbomachines, such as a turboprop, etc.
- the means implemented by the surveillance system 1 are distributed over two entities, namely on the aircraft 2 propelled by the engine and on a ground device 3 hosted for example by the airline operating the aircraft 2.
- the monitoring system 1 is able to monitor the level of oil contained in a tank 21 of a turbojet engine of the aircraft 2.
- This oil level is measured, in a manner known per se, by a resistive sensor 22 with a discrete resolution.
- a resistive sensor 22 delivers a discrete measurement having a predefined resolution (eg 0.25 qt or 0.27 liter).
- the discrete measurement delivered by the sensor remains the same.
- the absolute measurement of the oil level contained in the reservoir 21 is not precisely known, but as soon as a variation of the oil level is detected by the sensor, the latter is at least equal to the resolution of the sensor. .
- the aircraft 2 is furthermore equipped with a computer 23, comprising means for processing the measurements made by the sensor 22. according to the invention. These means will be described later with reference to FIG.
- the measurements processed by the computer 23 are sent to the device on the ground 3 by means of communication 24 equipping the aircraft 2.
- These means 24 include in particular an ACARS unit (Airline Communications, Addressing and Reporting System), able to communicate according to the ARINC standard via a link 4 with the ground device 3.
- ACARS unit Airline Communications, Addressing and Reporting System
- the ground device 3 here has the hardware architecture of a computer. It notably comprises communication means 21, including an ACARS unit able to receive and decode the messages sent by the aircraft 2, a processor 32, a random access memory 33, a read-only memory 34 and a non-volatile memory 35.
- communication means 21 including an ACARS unit able to receive and decode the messages sent by the aircraft 2, a processor 32, a random access memory 33, a read-only memory 34 and a non-volatile memory 35.
- the read-only memory 34 constitutes a recording medium readable by the processor 32 and on which is recorded a computer program comprising instructions for carrying out certain steps of the monitoring method according to the invention described later with reference to FIG. 3.
- the steps implemented by the aircraft 2 correspond strictly to the acquisition of measurements of the oil level contained in the tank 21 and the extraction of the relevant measurements to monitor the oil consumption of the turbojet engine. . They will be described with reference to FIG.
- the sensor 22 periodically makes measurements of the oil level contained in the tank 21 of the turbojet engine (step E10).
- the rotational speed of the turbojet engine is characterized here by the parameter N2, which designates the speed of rotation of the high pressure compressor shaft of the turbojet engine.
- the rotational speed can be characterized by other operating parameters of the turbojet, such as, for example, the parameter NI, which designates the speed of rotation of the low-pressure compressor shaft of the turbojet engine.
- the senor 22 being a discrete sensor, the measurement it delivers can remain the same for a long time (eg one hour) if the factors that influence the oil level in the tank do not vary.
- the term "segment” refers to a set of identical consecutive measurements delivered by the sensor 22. Also, in order to limit the amount of memory necessary to store the measurements delivered by the sensor, it is sufficient to memorize, for each segment, the value of the level oil measured by the sensor 22 on this segment, the beginning of the segment and its duration, the minimum and maximum oil temperatures reached on this segment, and the corresponding rotational speeds.
- all measurements taken by the sensor 22 can be stored.
- extraction of the relevant measurements is carried out in accordance with the invention. This extraction is carried out as and when the mission of the aircraft in order firstly to optimize the processing times of the measurements and secondly to limit the quantity of stored measurements.
- This extraction consists in filtering the measurements in order to select only the relevant measurements allowing to evaluate the oil consumption of the turbojet and detect abnormal consumption.
- the treatments making it possible to extract the relevant measurements that can differ according to the phase of the flight during which the measurements were made we first identify the phase of the flight in which the aircraft is located (eg engine with the stopping, starting, taxi before take-off, take-off, climb, cruise, descent, taxi after landing, stopping the engine, etc.) (step E20).
- the phase of the flight in which the aircraft is located eg engine with the stopping, starting, taxi before take-off, take-off, climb, cruise, descent, taxi after landing, stopping the engine, etc.
- the phases of the flight can be identified according to the rotational speed of the turbojet engine including the NI and / or N2 parameters mentioned above, as well as the previous flight phase.
- a timed state machine may be used to follow a motor speed gauge.
- the rotation speed of the turbojet engine (here characterized by the parameter N2) is approximately 60% of its maximum speed, and has higher peaks when the pilot of the aircraft accelerates.
- the oil level in the tank 21 drops slightly after acceleration before returning to its level before acceleration a few seconds after returning to a normal rotation.
- the measurements made during a peak of the parameter N2 are therefore not representative of the actual oil consumption of the turbojet engine.
- N2Ref a reference rotational speed of the turbojet engine, denoted N2Ref, corresponding to the rotation regime most commonly encountered during the first phase, is defined.
- N2Ref is taken as equal to about 60% of the maximum speed of the turbojet engine.
- a second treatment applied to the measurements made by the sensor 22 during the taxi phase consists in excluding the aberrant measurements, that is to say, the measurements which do not correspond strictly to a physical reality but which come from errors of measure (step E60).
- the aberrant measurements that is to say, the measurements which do not correspond strictly to a physical reality but which come from errors of measure (step E60).
- step E60 measurements corresponding to segments of short duration shorter than a predetermined limit duration are also excluded.
- This treatment is intended to exclude oil level variations due to bends made by the pilot of the aircraft or to sudden braking: they result in an acceleration or deceleration of the aircraft. motor speed relative to the ground, thus causing a momentary inclination of the oil surface in the tank.
- step E60 only the measurements corresponding to changes in the oil level due to changes in temperature are retained.
- step E70 the measurements associated with an oil temperature close to a predetermined reference temperature TRef (step E70) are then selected.
- the temperature most commonly reached by the oil contained in the reservoir 21, for example 100 ° C., is preferably chosen as the reference temperature TRef.
- step E70 the segments whose minimum and maximum temperatures associated are on both sides of the reference temperature.
- the segments whose minimum and maximum temperatures are relatively close to the reference temperature, that is to say, lower or higher by a predetermined difference of the order of a few degrees Celsius.
- step E70 The oil level measurements selected in step E70 are then transmitted to the communication means 31 of the ground device 3 by the communication means 24 of the aircraft 2, via the ACARS link 4 (step E80).
- the oil level measurements are coded for example in messages conforming to the standard ARINC, known to those skilled in the art. Each measurement is associated in this message with the corresponding oil temperature and the phase of the flight during which it was carried out (here phase taxi or cruise).
- ARINC the standard ARINC
- Steps E10 to E80 are repeated during each mission of the aircraft.
- these steps consist essentially of aggregating the measurements sent by the aircraft 2 during one or more missions, and to determine the oil consumption of the turbojet engine according to the measurements thus aggregated in order to detect in particular a consumption abnormal.
- Aggregating is understood here to bring together the measurements in such a way as to form a single set of points (eg a curve) that is consistent and representative of actual evolution of the oil level of the reservoir during the missions.
- points eg a curve
- the way in which the measurements obtained on separate missions of the aircraft are aggregated may differ according to the type of monitoring envisaged (for example averaged over several flights, or daily, weekly, monthly, etc.).
- the aggregation may consist in particular of averaging the measurements taken during a mission in order to obtain an average oil level on the mission, or to chronologically order the measurements obtained on different missions in order to evaluate the evolution oil level during several successive missions of the aircraft.
- step F10 For each mission of the aircraft, following receipt of the selected measurements for the taxi phase (step F10), it is first determined if some of these measures require a correction due to the existence of a difference between the oil temperatures associated with these measurements and the reference temperature (step F20). Indeed, as mentioned above, during the step E70 it was possible to tolerate more or less significant deviations from the reference temperature TRef. In particular, larger deviations (for example of the order of 30 ° C.) could be envisaged when none of the temperatures associated with the measurements recorded by the sensor 22 is equal to or almost equal to the reference temperature.
- the ground device 3 corrects the measurements concerned by adding them a QA deviation determined according to the model, as a function of the temperature difference ⁇ that they have with respect to the reference temperature.
- the ground device 3 classifies, for the mission in question, the measurements selected (and possibly corrected) for the taxi phase and the measurements selected for the cruise phase in chronological order (step F40). This gives the evolution of the oil level of the tank 21 for each mission of the aircraft.
- a linear regression is also applied to the measurements thus ordered in order to smooth the curve obtained.
- the measurements classified chronologically on each mission are then aggregated on several missions of the aircraft (step F40), that is to say here, classified in the order of the successive missions of the aircraft.
- the curve obtained may have "recesses", that is to say, sudden changes in the oil level between two successive missions of the aircraft. These recesses essentially correspond to fills of the tank 21 between two successive missions of the aircraft.
- the ground device 3 detects these fills of the tank 21 (step F50). For this, it compares the oil level variations appearing at the junction between two successive missions of the aircraft with a predetermined threshold to detect sudden changes.
- ground device 3 here compensates for these fillings in order to overcome their influence on the evolution of the oil level. This compensation is achieved by subtracting the amount of oil added when filling the tank. It allows to "align" the aggregated measurements on the various phases and on the different missions of the aircraft.
- a linear regression applied to the points of the set C makes it possible to obtain the average oil consumption of the turbojet engine on the missions considered.
- This average consumption is given by the directing coefficient of the line CRef obtained after linear regression (represented in FIG. 4).
- the residual of the regression and the number of points make it possible to determine the quality of the consumption thus estimated.
- This average consumption can then be compared with one or more reference thresholds, corresponding for example to the minimum oil consumption and the maximum oil consumption tolerated for the engine.
- thresholds are provided by the engine manufacturer.
- the set of points C is furthermore compared with the line CRef (step F60). In the course of this comparison, it is intended to detect a break in the alignment of the points of the set C with respect to the average consumption of the engine, a rupture that is often symptomatic of an anomaly in the oil consumption.
- the line CRef constitutes a reference curve in the sense of the invention representative of a normal evolution of the consumption of oil by the engine. In fact, in general, the oil consumption of an engine varies little. Also, a deviation from the right CRef makes it possible to diagnose an abnormal consumption of oil by the engine (step F70).
- the recess 5 shown in FIG. 4 is identified by the invention as representative of abnormal consumption. A more advanced investigation will determine whether it is a real anomaly in the engine oil consumption or a measurement fault if the deviation from the reference curve is not confirmed in the weather.
- other reference data can be compared to the aggregate measurement curve according to the type of anomalies that are to be detected. For example, we can compare the line Cref obtained by linear regression on the points of the set C with a line obtained by linear regression on aggregated measurements during past missions. A break in the directing coefficients of these lines is then symptomatic of an anomaly in oil consumption.
- the aggregation of the measurements on several missions of the aircraft consists in a chronological classification of the measures selected for the various missions.
- the monitoring may consist of evaluating the average oil level in the tank 21 (the average being performed on several missions of the aircraft).
- a linear regression can then be applied to aggregate measurements to estimate the engine's oil consumption on the mission. The residual of the regression and the number of points make it possible to determine the quality of the consumption thus estimated.
- the diagnosis can also be advantageously improved by comparing the monitoring of consumption on several engines of the same aircraft.
- a variation of the consumption of the same order of magnitude will be imputed on the different flight conditions, while a single-engine evolution is considered to be symptomatic of an anomaly in oil consumption.
- an abnormal consumption of oil is detected by comparing the evolution of the oil level on several successive missions of the aircraft with a reference curve.
- the oil consumption can be estimated by making a difference between two successive aggregated oil level measurements to directly compare the oil consumption with a reference oil consumption.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1052954A FR2958911B1 (fr) | 2010-04-19 | 2010-04-19 | Procede et systeme de surveillance du niveau d'huile contenue dans un reservoir d'un moteur d'aeronef |
PCT/FR2011/050854 WO2011131892A1 (fr) | 2010-04-19 | 2011-04-14 | Procede et systeme de surveillance du niveau d'huile contenue dans un reservoir d'un moteur d'aeronef |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2561193A1 true EP2561193A1 (fr) | 2013-02-27 |
EP2561193B1 EP2561193B1 (fr) | 2015-09-30 |
Family
ID=42262256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11730375.0A Active EP2561193B1 (fr) | 2010-04-19 | 2011-04-14 | Procede et systeme de surveillance du niveau d'huile contenue dans un reservoir d'un moteur d'aeronef |
Country Status (8)
Country | Link |
---|---|
US (1) | US9540974B2 (fr) |
EP (1) | EP2561193B1 (fr) |
CN (1) | CN102859133B (fr) |
BR (1) | BR112012026634B1 (fr) |
CA (1) | CA2796739C (fr) |
FR (1) | FR2958911B1 (fr) |
RU (1) | RU2557838C2 (fr) |
WO (1) | WO2011131892A1 (fr) |
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FR3030624A1 (fr) * | 2014-12-18 | 2016-06-24 | Snecma | Procede et dispositif d'obtention d'une pression differentielle de reference d'un fluide traversant un filtre d'un moteur d'aeronef |
CN109240327A (zh) * | 2018-09-11 | 2019-01-18 | 陕西千山航空电子有限责任公司 | 一种固定翼飞机飞行阶段识别方法 |
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US10260388B2 (en) | 2006-11-16 | 2019-04-16 | General Electric Company | Sensing system and method |
EP2573338B1 (fr) * | 2011-09-20 | 2017-07-19 | Safran Aero Boosters SA | Contrôle du sur-remplissage d'un système de lubrification d'un moteur d'aéronef |
US8850876B2 (en) * | 2012-07-19 | 2014-10-07 | Honeywell International Inc. | Methods and systems for monitoring engine oil temperature of an operating engine |
FR2993608B1 (fr) * | 2012-07-23 | 2018-07-06 | Safran Aircraft Engines | Methode de surveillance du colmatage d'un filtre sur turbomachine |
CN104343490B (zh) | 2013-07-24 | 2017-10-03 | 中国国际航空股份有限公司 | 一种发动机滑油监控系统及方法 |
CN104343491B (zh) * | 2013-07-24 | 2017-03-08 | 中国国际航空股份有限公司 | 一种发动机滑油添加探测系统及方法 |
CN104343492B (zh) * | 2013-08-02 | 2017-02-15 | 上海杰之能软件科技有限公司 | 飞机及其发动机滑油监控方法及系统 |
FR3029258B1 (fr) * | 2014-12-01 | 2017-01-13 | Snecma | Procede de surveillance d'une vanne de pressurisation de reservoir pour turbomachine |
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BE1023406B1 (fr) * | 2016-01-21 | 2017-03-09 | Safran Aero Boosters S.A. | Turbomachine d'aéronef |
US11192660B2 (en) | 2016-02-11 | 2021-12-07 | Honeywell International Inc. | Method and system for APU oil level indication |
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WO2017151847A1 (fr) * | 2016-03-03 | 2017-09-08 | General Electric Company | Système et procédé de détection |
WO2018102036A2 (fr) * | 2016-11-30 | 2018-06-07 | General Electric Company | Système et procédé de détection |
FR3074573B1 (fr) * | 2017-12-01 | 2021-01-22 | Safran Aircraft Engines | Procede de mesure par ultrasons |
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FR3093768B1 (fr) * | 2019-03-13 | 2021-07-02 | Safran Aircraft Engines | Procédé et système de surveillance d’un état d’un réducteur d’une turbine à gaz |
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US11193810B2 (en) | 2020-01-31 | 2021-12-07 | Pratt & Whitney Canada Corp. | Validation of fluid level sensors |
JP7298531B2 (ja) * | 2020-03-31 | 2023-06-27 | いすゞ自動車株式会社 | 異常原因特定装置及び異常原因特定方法 |
CN111964748B (zh) * | 2020-08-07 | 2023-05-09 | 四川泛华航空仪表电器有限公司 | 一种基于飞机油量传感器浸油高度的油量选择处理方法 |
EP3964703A1 (fr) | 2020-09-02 | 2022-03-09 | Caterpillar Energy Solutions GmbH | Surveillance d'état et de consommation d'huile de lubrification de moteur |
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-
2010
- 2010-04-19 FR FR1052954A patent/FR2958911B1/fr not_active Expired - Fee Related
-
2011
- 2011-04-14 CA CA2796739A patent/CA2796739C/fr active Active
- 2011-04-14 CN CN201180020135.9A patent/CN102859133B/zh active Active
- 2011-04-14 US US13/641,743 patent/US9540974B2/en active Active
- 2011-04-14 RU RU2012148901/06A patent/RU2557838C2/ru active
- 2011-04-14 BR BR112012026634-9A patent/BR112012026634B1/pt active IP Right Grant
- 2011-04-14 WO PCT/FR2011/050854 patent/WO2011131892A1/fr active Application Filing
- 2011-04-14 EP EP11730375.0A patent/EP2561193B1/fr active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3030624A1 (fr) * | 2014-12-18 | 2016-06-24 | Snecma | Procede et dispositif d'obtention d'une pression differentielle de reference d'un fluide traversant un filtre d'un moteur d'aeronef |
CN109240327A (zh) * | 2018-09-11 | 2019-01-18 | 陕西千山航空电子有限责任公司 | 一种固定翼飞机飞行阶段识别方法 |
CN109240327B (zh) * | 2018-09-11 | 2021-10-12 | 陕西千山航空电子有限责任公司 | 一种固定翼飞机飞行阶段识别方法 |
Also Published As
Publication number | Publication date |
---|---|
RU2557838C2 (ru) | 2015-07-27 |
RU2012148901A (ru) | 2014-05-27 |
CA2796739A1 (fr) | 2011-10-27 |
BR112012026634B1 (pt) | 2020-12-22 |
US9540974B2 (en) | 2017-01-10 |
US20130218399A1 (en) | 2013-08-22 |
FR2958911A1 (fr) | 2011-10-21 |
BR112012026634A2 (pt) | 2016-07-12 |
WO2011131892A1 (fr) | 2011-10-27 |
CA2796739C (fr) | 2017-10-17 |
CN102859133B (zh) | 2015-07-01 |
EP2561193B1 (fr) | 2015-09-30 |
FR2958911B1 (fr) | 2012-04-27 |
CN102859133A (zh) | 2013-01-02 |
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