Maintenance method, system and equipment for aviation lubricating oil cooler and medium

Abstract

The invention discloses a maintenance method, system and equipment for an aviation lubricating oil cooler and a medium, and relates to the technical field of aviation maintenance, and the method comprises the steps: obtaining the lubricating oil temperature of a fleet through collecting QAR data of a fleet aircraft after a ground engine is started and before an APU is turned off; generating an alarm threshold according to the fleet lubricating oil temperature, and obtaining a plurality of alarm temperature intervals; each alarm temperature interval corresponds to the number of normal continuous days and the pollution degree of the lubricating oil cooler; qAR data of a to-be-monitored aircraft are obtained, and multi-day lubricating oil temperature is obtained; and generating maintenance measures of the to-be-monitored aircraft according to the multi-day lubricating oil temperature, the alarm temperature interval and the fault code. By adopting the embodiment of the invention, APU shutdown events caused by smudginess of the lubricating oil cooler can be reduced, the original'cleaning after shutdown 'is converted into'cleaning before shutdown', a large amount of labor hours are saved, and the riding experience of customers is improved.

Description

Technical Field

[0001] The present invention relates to the field of aviation maintenance technology, and in particular to a maintenance method, system, equipment and medium for an aviation lubricating oil cooler. Background Art

[0002] Not all aircraft configurations are capable of monitoring the oil temperature of the auxiliary power unit oil cooler. To clean the oil cooler, the MRS (Maintenance Requirement System) inherent interval cleaning is generally used.

[0003] However, the inherent MRS interval cannot effectively control the cleaning of the APU (Auxiliary Power Unit) oil cooler. Every spring and summer, as the temperature rises and the dust season arrives, the fleet will experience high oil temperatures due to blockage of the APU oil cooler, causing many APU protective shutdowns, seriously affecting the customer's flight experience. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to improve the APU monitoring system and provide a maintenance method, system, equipment and medium for an aviation lubricating oil cooler, which can reduce the APU shutdown events caused by the contamination of the lubricating oil cooler, and transform the original "cleaning after shutdown" into "cleaning before shutdown", saving a lot of man-hours and improving the customer's flight experience.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a maintenance method for an aviation lubricating oil cooler, comprising:

[0006] Collect QAR data of fleet aircraft after starting engines on the ground and before shutting down APU to obtain fleet oil temperature;

[0007] Generate an alarm threshold value according to the fleet lubricating oil temperature, and obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to a normal duration number of days and a contamination degree of the lubricating oil cooler;

[0008] Obtain the QAR data of the aircraft to be monitored and obtain the lubricating oil temperature for multiple days;

[0009] Maintenance measures for the aircraft to be monitored are generated according to the lubricating oil temperatures over multiple days, the alarm temperature range and the fault code.

[0010] As an improvement of the above solution, the alarm threshold is generated according to the lubricating oil temperature of the fleet to obtain several alarm temperature ranges, including:

[0011] Setting a contamination level threshold value for the contamination level of the lubricating oil cooler;

[0012] Selecting a lubricating oil temperature corresponding to the contamination degree threshold from the lubricating oil temperatures of the fleet as an alarm threshold;

[0013] According to the alarm threshold, a plurality of alarm temperature intervals and the normal duration days corresponding to each alarm temperature interval are obtained.

[0014] As an improvement of the above solution, the method of acquiring the QAR data of the aircraft to be monitored and obtaining the lubricating oil temperature for multiple days includes:

[0015] Obtain the QAR data of the aircraft to be monitored after the engine is started on the ground and before the APU is shut down, and obtain the real-time lubricating oil temperature at several times over multiple days;

[0016] The mode of the real-time lubricating oil temperature is calculated, and the maximum value of the mode for each day is taken as the lubricating oil temperature for that day, thereby obtaining the lubricating oil temperature for multiple days.

[0017] As an improvement of the above solution, the generating of maintenance measures for the aircraft to be monitored according to the lubricating oil temperature for multiple days, the temperature range and the fault code includes:

[0018] Obtaining the duration and temperature change trend in each temperature range according to the lubricating oil temperature for multiple days;

[0019] If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained to determine whether the lubricating oil cooler is faulty;

[0020] If the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code;

[0021] If the lubricating oil cooler fails, a second maintenance measure for the aircraft to be monitored is generated according to the temperature range.

[0022] As an improvement of the above solution, if the duration is less than the normal duration interval corresponding to the temperature interval and the temperature change trend is increasing, obtaining a fault code and determining whether the lubricating oil cooler is faulty include:

[0023] If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained;

[0024] When the fault code is an equipment fault code or an oil quantity fault code, it is considered that it is not an oil cooler fault; otherwise, it is considered that it is an oil cooler fault; wherein the equipment fault code includes a clogged starter generator oil filter; and the oil quantity fault code includes a low oil quantity.

[0025] As an improvement of the above solution, if the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code includes:

[0026] When the fault code is an equipment fault code, generating an equipment maintenance strategy as a first maintenance measure for the aircraft to be monitored;

[0027] When the fault code is an oil quantity fault code, an oil quantity control strategy is generated as a first maintenance measure for the aircraft to be monitored.

[0028] As an improvement of the above solution, if the lubricating oil cooler fails, a second maintenance measure for the aircraft to be monitored is generated according to the alarm temperature range, including:

[0029] If the lubricating oil cooler fails, the alarm temperature interval in which the lubricating oil temperature for the multiple days is located and the number of days in the alarm temperature interval are obtained;

[0030] According to the alarm temperature range, the contamination degree of the lubricating oil cooler is obtained;

[0031] A second maintenance measure for the aircraft to be monitored is generated based on the degree of contamination and the duration.

[0032] The embodiment of the present invention further provides a maintenance system for an aviation lubricating oil cooler, comprising:

[0033] The fleet lubricating oil temperature collection module is used to collect the QAR data of the fleet aircraft after the engine is started on the ground and before the APU is turned off to obtain the fleet lubricating oil temperature;

[0034] An alarm temperature interval division module is used to generate an alarm threshold according to the lubricating oil temperature of the fleet to obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to the alarm duration days and the contamination degree of the lubricating oil cooler;

[0035] Aircraft data monitoring module, used to obtain QAR data of the aircraft to be monitored and obtain lubricating oil temperature for multiple days;

[0036] The maintenance measure generating module is used to generate the maintenance measures of the aircraft to be monitored according to the lubricating oil temperature for multiple days, the alarm temperature range and the fault code.

[0037] An embodiment of the present invention also provides a maintenance device for an aviation lubricating oil cooler, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the maintenance method for the aviation lubricating oil cooler as described in any one of the above items is implemented.

[0038] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the above methods for maintaining an aviation lubricating oil cooler.

[0039] Compared with the prior art, the present invention discloses a maintenance method, system, equipment and medium for aviation lubricating oil coolers, which obtains the fleet lubricating oil temperature by collecting QAR data of fleet aircraft after the engine is started on the ground and before the APU is shut down; generates an alarm threshold according to the fleet lubricating oil temperature, and obtains several alarm temperature intervals; each alarm temperature interval corresponds to the normal duration and the degree of contamination of the lubricating oil cooler; obtains the QAR data of the aircraft to be monitored, and obtains the lubricating oil temperature for multiple days; generates maintenance measures for the aircraft to be monitored according to the multiple-day lubricating oil temperature, the alarm temperature interval and the fault code. The use of the embodiments of the present invention can reduce the APU shutdown events caused by the contamination of the lubricating oil cooler, and transform the original "cleaning after shutdown" into "cleaning before shutdown", saving a lot of man-hours and improving the customer's flight experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic flow chart of steps of a maintenance method of an aviation lubricating oil cooler provided by an embodiment of the present invention;

[0041] Figure 2 The present invention is a schematic diagram of the structure of a maintenance system for an aviation lubricating oil cooler provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the specification and claims, it is to be understood that the terms first, second, etc. in the specification and claims are only used for the purpose of describing the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor necessarily describing the order or time sequence. The terms are interchangeable where appropriate. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0044] At present, Boeing series 916 configuration aircraft can use the ACMS real-time message system to monitor the oil temperature of the oil cooler, but Boeing series 816 configuration aircraft have no monitoring. In order to achieve the cleaning of the oil coolers of aircraft of various configurations, the inherent MRS interval is generally adopted. For example, the APU oil cooler is cleaned every 2400FH, and every 7500FH, the APU oil cooler is removed and the cooler is soaked and cleaned with a full concentration of cleaning agent TC-100. However, the inherent MRS interval cannot control the cleaning of the APU oil cooler well, and the control measures are not detailed enough, and effective measures cannot be taken in advance. Other faults caused by the accelerated wear of parts and accessories due to the long-term high APU oil temperature seriously affect the on-wing life of the APU. In addition, the ACMS monitoring method is single-point data monitoring, which cannot reflect the trend of data changes.

[0045] Based on the above considerations, an embodiment of the present invention provides a maintenance method for an aviation lubricating oil cooler. Figure 1 In this embodiment, the maintenance method of the aviation lubricating oil cooler is specifically performed through steps S1 to S4:

[0046] S1. Collect QAR data of fleet aircraft after starting engines on the ground and before shutting down APU to obtain fleet lubricating oil temperature.

[0047] It should be noted that the APU oil temperature QAR data transmission is mainly divided into two stages. The first stage is after the engine is started on the ground and before the aircraft starts to taxi and shut down the APU; the second stage is after the aircraft lands and the crew starts the APU until the engine is shut down. In the embodiment of the present invention, the data of the first stage is used for analysis, which can well monitor the oil temperature changes during the APU operation process.

[0048] S2. Generate an alarm threshold value according to the fleet lubricating oil temperature to obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to a normal duration number of days and a contamination degree of the lubricating oil cooler.

[0049] It should be noted that in the early stage of adopting this method, the existing ACMS monitoring method can be used at the same time, which can not only verify the results of the embodiment of this method, but also gradually connect with the existing method to ensure the accuracy of monitoring. When a certain amount of fleet lubricating oil temperature data is accumulated, it is possible to apply to cancel the inherent cleaning interval of MRS, and change "cleaning after shutdown" to "cleaning before shutdown", saving a lot of man-hours.

[0050] S3. Acquire the QAR data of the aircraft to be monitored and obtain the lubricating oil temperature for multiple days.

[0051] It should be noted that ACMS is a single-point data monitoring method, which is difficult to reflect the changing trend of data. In the embodiment of the present invention, through QAR data, continuous data monitoring can be carried out to effectively improve the APU comprehensive monitoring system.

[0052] S4. Generate maintenance measures for the aircraft to be monitored based on the lubricating oil temperature for multiple days, the alarm temperature range and the fault code.

[0053] In the embodiment of the present invention, the variation pattern of the data can be obtained through the lubricating oil temperature for multiple days, and further combined with the fault code, it can be clearly identified whether the lubricating oil temperature increase is caused by a fault, and the APU lubricating oil high temperature shutdown fault can be accurately judged, thereby avoiding the APU from running at a high lubricating oil temperature for a long time and extending the on-wing service life of the APU.

[0054] Due to the frequent occurrence of faults in multiple locations, the spare parts of the lubricating oil cooler are in short supply, and the APU is frequently waiting for parts. The embodiment of the invention can clean the lubricating oil cooler in time by monitoring the lubricating oil temperature, effectively avoiding the operation incidents caused by the sudden dirt and blockage of the lubricating oil cooler caused by the external environment, and effectively alleviating the difficulties in the turnover of aviation materials and the emergency adjustment of parts.

[0055] In the prior art, there is only one technical solution to monitor the oil temperature of the oil cooler through the ACMS real-time message system, and not all aircraft configurations can be monitored using ACCMS, and the monitoring data for the oil temperature is seriously missing. The present invention proposes for the first time to use QAR data to accurately monitor the aircraft oil temperature, and to generate accurate maintenance measures in combination with fault codes. In the application, the oil cooler cleaning and replacement nodes can be accurately controlled, avoiding more than 90% of APU shutdown events.

[0056] As a preferred implementation, step S2, generating an alarm threshold according to the fleet lubricating oil temperature to obtain a plurality of alarm temperature intervals, includes:

[0057] Setting a contamination level threshold value for the contamination level of the lubricating oil cooler;

[0058] Selecting a lubricating oil temperature corresponding to the contamination degree threshold from the lubricating oil temperatures of the fleet as an alarm threshold;

[0059] According to the alarm threshold, a plurality of alarm temperature intervals and the normal duration days corresponding to each alarm temperature interval are obtained.

[0060] For example, please refer to Table 1. First, the contamination thresholds of the lubricating oil cooler are set to 60%, 80% and 90%. When the contamination level is not greater than 60%, it is considered that the lubricating oil cooler does not need to be cleaned, and its contamination level is not taken into account in the embodiment of the present invention. The contamination level is based on the dirty area of ​​the lubricating oil cooler as the standard. Then, the alarm thresholds of 110°C, 120°C, 130°C and 149°C are generated based on the contamination level threshold. Without any cleaning operation and without other faults, the normal duration of the lubricating oil cooler at a temperature between 110°C and 120°C is 10-15 days, at which time the contamination level of the lubricating oil cooler is more than 60%; the normal duration of the lubricating oil cooler at a temperature between 120°C and 130°C is 6-10 days, at which time the contamination level of the lubricating oil cooler is more than 80%; the normal duration of the lubricating oil cooler at a temperature between 130°C and 149°C is 3-7 days, at which time the contamination level of the lubricating oil cooler is more than 90%. Therefore, in this embodiment, the alarm temperature intervals are 110°C to 120°C, 120°C to 130°C and 130°C to 149°C, and the normal duration days corresponding to each alarm temperature interval are 10-15 days, 6-10 days and 3-7 days respectively.

[0061] It is understandable that if the lubricating oil temperature of the lubricating oil cooler shows a sudden increase trend without any operation, it means that the lubricating oil cooler may have a fault and needs to be dealt with in time, and the higher the pollution reading, the higher the level of cleaning requirements.

[0062] Table 1

[0063] Temperature range 90-110(℃) 110-120(℃) 120-130(℃) 130-149(℃) Duration 40-50 10-15 6-10 3-7 Pollution level \ More than 60% More than 80% More than 90%

[0064] As a preferred implementation, step S3, obtaining the QAR data of the aircraft to be monitored and obtaining the lubricating oil temperature for multiple days, includes:

[0065] Obtain the QAR data of the aircraft to be monitored after the engine is started on the ground and before the APU is shut down, and obtain the real-time lubricating oil temperature at several times over multiple days;

[0066] The mode of the real-time lubricating oil temperature is calculated, and the maximum value of the mode for each day is taken as the lubricating oil temperature for that day, thereby obtaining the lubricating oil temperature for multiple days.

[0067] It should be noted that QAR data can be approximately regarded as continuous data, and the data is huge. If all the data are to be analyzed one by one, a lot of resources are needed. In the embodiment of the present invention, the mode of all real-time lubricating oil temperature data in a day is taken as the lubricating oil temperature of the day, and the aircraft lubricating oil temperature is monitored on a daily basis. In other preferred embodiments, the lubricating oil temperature can also be monitored on a single flight basis.

[0068] In some preferred embodiments, step S4, generating maintenance measures for the aircraft to be monitored according to the lubricating oil temperature for multiple days, the temperature range and the fault code, comprises:

[0069] Obtaining the duration and temperature change trend in each temperature range according to the lubricating oil temperature for multiple days;

[0070] If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained to determine whether the lubricating oil cooler is faulty;

[0071] If the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code;

[0072] If the lubricating oil cooler fails, a second maintenance measure for the aircraft to be monitored is generated according to the temperature range.

[0073] It should be noted that the abnormal rise in lubricating oil temperature may be due to the lubricating oil cooler needing cleaning and maintenance, or it may be due to other fault reasons, such as clogged starter generator oil filter, low lubricating oil level or temperature sensor failure, or it may be due to abnormalities in nearby pipelines.

[0074] In the embodiment of the present invention, the change pattern of data combined with the APU fault code can be used to clearly identify whether the oil temperature rise is caused by a fault, accurately determine the APU oil high temperature shutdown fault, avoid the APU from running at a high oil temperature for a long time, and extend the on-wing service life of the APU.

[0075] Further, preferably, if the duration is less than the normal duration interval corresponding to the temperature interval and the temperature change trend is increasing, obtaining a fault code and determining whether the lubricating oil cooler is faulty include:

[0076] If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained;

[0077] When the fault code is an equipment fault code or an oil quantity fault code, it is considered that it is not an oil cooler fault; otherwise, it is considered that it is an oil cooler fault; wherein the equipment fault code includes a clogged starter generator oil filter; and the oil quantity fault code includes a low oil quantity.

[0078] As a preferred implementation, if the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code includes:

[0079] When the fault code is an equipment fault code, generating an equipment maintenance strategy as a first maintenance measure for the aircraft to be monitored;

[0080] When the fault code is an oil quantity fault code, an oil quantity control strategy is generated as a first maintenance measure for the aircraft to be monitored.

[0081] For example, when the fault code is 49-94299, the oil temperature may rise due to the oil filter clogging fault of the starter generator, and the first maintenance measure generated is to perform oil filter disassembly and inspection, and there is no need to clean or replace the oil cooler; when the fault code is 49-91227, the oil temperature may rise due to too low oil volume, and the first maintenance measure generated is to add oil, and there is no need to clean or replace the oil cooler. However, when the fault code is 49-91005, that is, a high oil temperature shutdown fault occurs, the oil temperature may rise suddenly due to other reasons. In addition to cleaning or replacing the oil cooler, further inspection and confirmation are required, such as checking the temperature sensor and nearby pipelines.

[0082] As a preferred implementation, if the lubricating oil cooler fails, generating a second maintenance measure for the aircraft to be monitored according to the alarm temperature range includes:

[0083] If the lubricating oil cooler fails, the alarm temperature interval in which the lubricating oil temperature for the multiple days is located and the number of days in the alarm temperature interval are obtained;

[0084] According to the alarm temperature range, the contamination degree of the lubricating oil cooler is obtained;

[0085] A second maintenance measure for the aircraft to be monitored is generated based on the degree of contamination and the duration.

[0086] It can be understood that the alarm temperature interval can reflect the contamination degree of the lubricating oil cooler, based on which a strategy can be obtained as to whether the lubricating oil cooler needs to be cleaned or replaced; and the duration in the alarm temperature interval can reflect the urgency of maintenance.

[0087] Exemplarily, when the lubricating oil temperature is in the first alarm temperature interval, low-level maintenance measures are used, and if the lubricating oil temperature stays in the first alarm temperature interval for less than 10 days and the lubricating oil temperature rises to the second alarm interval, the low-level maintenance measures are upgraded and intermediate-level maintenance measures are adopted.

[0088] In some preferred embodiments, the second maintenance measure may also be generated in combination with the external temperature.

[0089] Exemplarily, as shown in Table 2, when the lubricating oil temperature is between 90-100°C, the lubricating oil temperature is continuously monitored; when the lubricating oil temperature is between 100-120°C, if the outside temperature is greater than 30°C, the second maintenance measure includes cleaning the lubricating oil cooler within 7 days, and if the outside temperature is less than 30°C, the second maintenance measure includes cleaning the lubricating oil cooler in combination with the scheduled inspection; when the lubricating oil temperature is between 120-130°C, if the outside temperature is greater than 30°C, the second maintenance measure includes cleaning the lubricating oil / replacing the cooler within 3 days, and if the outside temperature is less than 30°C, the second maintenance measure includes cleaning the lubricating oil cooler within 7 days; when the lubricating oil temperature is between 130-148°C, if the outside temperature is greater than 30°C, the second maintenance measure includes cleaning / replacing the lubricating oil cooler after the flight on the same day, and if the outside temperature is less than 30°C, the second maintenance measure includes cleaning the lubricating oil / replacing the cooler within 3 days.

[0090] Table 2

[0091]

[0092] By adopting a maintenance method for an aviation lubricating oil cooler provided by an embodiment of the present invention, QAR data is used to accurately monitor the aircraft lubricating oil temperature, and accurate maintenance measures are generated in combination with fault codes, which can reduce APU shutdown events caused by dirty lubricating oil coolers, and transform the original "cleaning after shutdown" into "cleaning before shutdown", saving a lot of man-hours and improving customers' flight experience.

[0093] The embodiment of the present invention provides a maintenance system for an aviation lubricating oil cooler. Figure 2 The aviation lubricating oil cooler maintenance system includes a fleet lubricating oil temperature collection module 11, an alarm temperature interval division module 12, an aircraft data monitoring module 13 and a maintenance measure generation module 14, wherein:

[0094] The fleet lubricating oil temperature collection module 11 is used to collect QAR data of the fleet aircraft after the engine is started on the ground and before the APU is turned off to obtain the fleet lubricating oil temperature;

[0095] The alarm temperature interval division module 12 is used to generate an alarm threshold according to the lubricating oil temperature of the fleet to obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to the alarm duration days and the contamination degree of the lubricating oil cooler;

[0096] The aircraft data monitoring module 13 is used to obtain the QAR data of the aircraft to be monitored and obtain the lubricating oil temperature for multiple days;

[0097] The maintenance measure generating module 14 is used to generate maintenance measures for the aircraft to be monitored according to the lubricating oil temperature for multiple days, the alarm temperature range and the fault code.

[0098] As a preferred implementation, the alarm temperature interval division module 12 includes:

[0099] A pollution degree threshold value setting unit, used for setting a pollution degree threshold value of the pollution degree of the lubricating oil cooler;

[0100] an alarm threshold generating unit, configured to select a lubricating oil temperature corresponding to the contamination degree threshold from the lubricating oil temperatures of the fleet as an alarm threshold;

[0101] The interval division unit is used to obtain a number of alarm temperature intervals and the normal duration days corresponding to each alarm temperature interval according to the alarm threshold.

[0102] As a preferred implementation, the aircraft data monitoring module 13 includes:

[0103] The real-time lubricating oil temperature acquisition unit is used to acquire the QAR data of the aircraft to be monitored after the engine is started on the ground and before the APU is shut down, and obtain the real-time lubricating oil temperature at several times over multiple days;

[0104] The multi-day lubricating oil temperature calculation unit is used to calculate the mode of the real-time lubricating oil temperature, and take the maximum value of the mode of each day as the lubricating oil temperature of the day to obtain the multi-day lubricating oil temperature.

[0105] As a preferred implementation, the maintenance measure generating module 14 includes:

[0106] A temperature trend analysis unit, used for obtaining the duration and temperature change trend in each temperature interval according to the lubricating oil temperature for multiple days;

[0107] a fault judgment unit, configured to obtain a fault code and judge whether the lubricating oil cooler is faulty if the duration is less than a normal duration corresponding to the temperature interval and the temperature change trend is increasing;

[0108] A first maintenance measure generating unit, configured to generate a first maintenance measure for the aircraft to be monitored according to the fault code if the lubricating oil cooler is not faulty;

[0109] The second maintenance measure generating unit is used for generating a second maintenance measure for the aircraft to be monitored according to the temperature range if the lubricating oil cooler fails.

[0110] Further, preferably, the fault judgment unit is specifically used to:

[0111] If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained;

[0112] When the fault code is an equipment fault code or an oil quantity fault code, it is considered that it is not an oil cooler fault; otherwise, it is considered that it is an oil cooler fault; wherein the equipment fault code includes a clogged starter generator oil filter; and the oil quantity fault code includes a low oil quantity.

[0113] Preferably, the first maintenance measure generating unit is specifically used for:

[0114] When the fault code is an equipment fault code, generating an equipment maintenance strategy as a first maintenance measure for the aircraft to be monitored;

[0115] When the fault code is an oil quantity fault code, an oil quantity control strategy is generated as a first maintenance measure for the aircraft to be monitored.

[0116] As a preferred implementation manner, the second maintenance measure generating unit is specifically used to:

[0117] If the lubricating oil cooler fails, the alarm temperature interval in which the lubricating oil temperature for the multiple days is located and the number of days in the alarm temperature interval are obtained;

[0118] According to the alarm temperature range, the contamination degree of the lubricating oil cooler is obtained;

[0119] A second maintenance measure for the aircraft to be monitored is generated based on the degree of contamination and the duration.

[0120] An aviation lubricating oil cooler maintenance system provided by an embodiment of the present invention uses QAR data to accurately monitor the aircraft lubricating oil temperature, and generates accurate maintenance measures in combination with fault codes, which can reduce APU shutdown events caused by dirty lubricating oil coolers, and transform the original "cleaning after shutdown" into "cleaning before shutdown", saving a lot of man-hours and improving customers' flight experience.

[0121] An embodiment of the present invention also provides a maintenance device for an aviation lubricating oil cooler, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, a maintenance method for an aviation lubricating oil cooler as described above is implemented. The working principles and beneficial effects of the two correspond one to one, and thus are not described in detail.

[0122] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0123] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A maintenance method for an aviation lubricating oil cooler, characterized in that: include: Collect QAR data of fleet aircraft after starting engines on the ground and before shutting down APU to obtain fleet oil temperature; Generate an alarm threshold value according to the fleet lubricating oil temperature, and obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to a normal duration number of days and a contamination degree of the lubricating oil cooler; Obtain the QAR data of the aircraft to be monitored and obtain the lubricating oil temperature for multiple days; Maintenance measures for the aircraft to be monitored are generated according to the lubricating oil temperatures over multiple days, the alarm temperature range and the fault code.

2. The maintenance method of an aviation lubricating oil cooler according to claim 1, characterized in that: The generating of the alarm threshold according to the fleet lubricating oil temperature to obtain a plurality of alarm temperature ranges includes: Setting a contamination level threshold value for the contamination level of the lubricating oil cooler; Selecting a lubricating oil temperature corresponding to the contamination degree threshold from the lubricating oil temperatures of the fleet as an alarm threshold; According to the alarm threshold, a plurality of alarm temperature intervals and the normal duration days corresponding to each alarm temperature interval are obtained.

3. The maintenance method of an aviation lubricating oil cooler according to claim 1, characterized in that: The step of obtaining the QAR data of the aircraft to be monitored and obtaining the lubricating oil temperature for multiple days includes: Obtain the QAR data of the aircraft to be monitored after the engine is started on the ground and before the APU is shut down, and obtain the real-time lubricating oil temperature at several times over multiple days; The mode of the real-time lubricating oil temperature is calculated, and the maximum value of the mode for each day is taken as the lubricating oil temperature for that day, thereby obtaining the lubricating oil temperature for multiple days.

4. The maintenance method of an aviation lubricating oil cooler according to claim 1, characterized in that: Generating maintenance measures for the aircraft to be monitored according to the lubricating oil temperature for multiple days, the temperature range and the fault code includes: Obtaining the duration and temperature change trend in each temperature range according to the lubricating oil temperature for multiple days; If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained to determine whether the lubricating oil cooler is faulty; If the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code; If the lubricating oil cooler fails, a second maintenance measure for the aircraft to be monitored is generated according to the temperature range.

5. The maintenance method of an aviation lubricating oil cooler according to claim 4, characterized in that: If the duration is less than the normal duration interval corresponding to the temperature interval and the temperature change trend is increasing, obtaining a fault code and determining whether the lubricating oil cooler is faulty include: If the duration is less than the normal duration corresponding to the temperature interval and the temperature change trend is increasing, a fault code is obtained; When the fault code is an equipment fault code or an oil quantity fault code, it is considered that it is not an oil cooler fault; otherwise, it is considered that it is an oil cooler fault; wherein the equipment fault code includes a clogged starter generator oil filter; and the oil quantity fault code includes a low oil quantity.

6. The maintenance method of an aviation lubricating oil cooler according to claim 4, characterized in that: If the lubricating oil cooler is not faulty, generating a first maintenance measure for the aircraft to be monitored according to the fault code includes: When the fault code is an equipment fault code, generating an equipment maintenance strategy as a first maintenance measure for the aircraft to be monitored; When the fault code is an oil quantity fault code, an oil quantity control strategy is generated as a first maintenance measure for the aircraft to be monitored.

7. The maintenance method of an aviation lubricating oil cooler according to claim 4, characterized in that: If the lubricating oil cooler fails, generating a second maintenance measure for the aircraft to be monitored according to the alarm temperature range includes: If the lubricating oil cooler fails, the alarm temperature interval in which the lubricating oil temperature for the multiple days is located and the number of days in the alarm temperature interval are obtained; According to the alarm temperature range, the contamination degree of the lubricating oil cooler is obtained; A second maintenance measure for the aircraft to be monitored is generated based on the degree of contamination and the duration.

8. A maintenance system for an aviation lubricating oil cooler, characterized in that: include: The fleet lubricating oil temperature collection module is used to collect the QAR data of the fleet aircraft after the engine is started on the ground and before the APU is turned off to obtain the fleet lubricating oil temperature; An alarm temperature interval division module is used to generate an alarm threshold according to the lubricating oil temperature of the fleet to obtain a plurality of alarm temperature intervals; each alarm temperature interval corresponds to the alarm duration days and the contamination degree of the lubricating oil cooler; Aircraft data monitoring module, used to obtain QAR data of the aircraft to be monitored and obtain lubricating oil temperature for multiple days; The maintenance measure generating module is used to generate the maintenance measures of the aircraft to be monitored according to the lubricating oil temperature for multiple days, the alarm temperature range and the fault code.

9. A maintenance device for an aviation lubricating oil cooler, characterized in that: The invention comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the maintenance method of the aviation lubricating oil cooler according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the aviation oil cooler maintenance method according to any one of claims 1 to 7.

Images