Method, device, storage medium and electronic device for maintaining an air filter

Abstract

The application provides a method, device, storage medium and electronic equipment for maintaining an air filter. The method comprises: obtaining an air intake pressure of the air filter, wherein the air intake pressure is obtained by a pressure sensor installed at an air intake port of the air filter; determining an oil consumption degradation coefficient corresponding to the air filter according to the air intake pressure, wherein the oil consumption degradation coefficient reflects a difference between an actual oil consumption and a theoretical oil consumption; determining an oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determining an oil consumption degradation cost according to the oil consumption degradation amount; and generating a prompt information in a case where the oil consumption degradation cost is higher than a maintenance cost of the air filter, wherein the prompt information is used to prompt a user to maintain the air filter in time. The present scheme realizes timely maintenance of the air filter.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air filters, in particular, to a method and device for maintaining an air filter, a storage medium and an electronic device. BACKGROUND

[0002] When the user takes the air filter to a service station for maintenance, the air filter element is replaced. The user's environment varies greatly, and some users do not maintain the diesel engine in time, so that the air filter of some vehicles cannot be maintained in time, the intake resistance is too large, and there are problems such as increased oil consumption, oil leakage of the supercharger, and dust entering the engine causing abnormal wear. SUMMARY

[0003] The main purpose of the present application is to provide a method and device for maintaining an air filter, a storage medium, a processor and an electronic device to at least solve the problem of not timely maintenance of the existing air filter maintenance scheme.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a method for maintaining an air filter is provided, comprising: obtaining an intake pressure of an air filter, wherein the intake pressure is obtained by a pressure sensor installed at an air inlet of the air filter; determining an oil consumption degradation coefficient corresponding to the air filter according to the intake pressure, wherein the oil consumption degradation coefficient reflects the difference between the actual oil consumption and the theoretical oil consumption; determining an oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determining an oil consumption degradation cost according to the oil consumption degradation amount, and generating a prompt information under the condition that the oil consumption degradation cost is higher than the maintenance cost of the air filter, the prompt information is used to prompt the user to maintain the air filter in time.

[0005] Optionally, the method further comprises: determining the oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure, including: determining the oil consumption deterioration coefficient corresponding to the air filter as a preset coefficient when the intake pressure is less than a first pressure lower limit value, the preset coefficient indicating that the oil consumption deterioration amount has no impact on maintenance of the air filter; performing interpolation processing between the preset coefficient and a first deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter when the intake pressure is greater than or equal to the first pressure lower limit value and less than a second pressure lower limit value; performing interpolation processing between the first deterioration coefficient and a second deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter when the intake pressure is greater than or equal to the second pressure lower limit value and less than a pressure upper limit value, the first deterioration coefficient and the second deterioration coefficient being determined according to a rotating speed of a diesel engine and a circulating oil supply amount, the air filter being installed on the diesel engine; determining the oil consumption deterioration coefficient corresponding to the air filter as an alarm deterioration coefficient when the intake pressure is greater than the pressure upper limit value, the alarm deterioration coefficient being used to indicate that the oil consumption deterioration amount is higher than an oil consumption deterioration amount threshold value.

[0006] Optionally, the method further comprises: performing interpolation processing between the preset coefficient and a first deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter when the intake pressure is greater than or equal to the first pressure lower limit value and less than a second pressure lower limit value, including: determining the oil consumption deterioration coefficient according to a first relationship: (pressure Hi1-pressure Act1) / (pressure Act1-pressure Lo1)=(coefficient Hi1-L1) / (L1-coefficient Lo1), wherein L1 represents the oil consumption deterioration coefficient, pressure Hi1 represents the second pressure lower limit value, pressure Lo1 represents the first pressure lower limit value, pressure Act1 represents the intake pressure acquired in real time, coefficient Hi1 represents the first deterioration coefficient, and coefficient Lo1 represents the preset coefficient; and / or performing interpolation processing between the first deterioration coefficient and a second deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter when the intake pressure is greater than or equal to the second pressure lower limit value and less than a pressure upper limit value, including: determining the oil consumption deterioration coefficient according to a second relationship: (pressure Hi2-pressure Act2) / (pressure Act2-pressure Lo2)=(coefficient Hi2-L2) / (L2-coefficient Lo2), wherein L2 represents the oil consumption deterioration coefficient, pressure Hi2 represents the pressure upper limit value, pressure Lo2 represents the second pressure lower limit value, pressure Act2 represents the intake pressure acquired in real time, coefficient Hi2 represents the second deterioration coefficient, and coefficient Lo2 represents the first deterioration coefficient.

[0007] Optionally, the method further comprises: constructing a corresponding relationship between the intake flow of the air filter and the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value; and determining the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value corresponding to the real-time intake flow of the air filter according to the corresponding relationship and the real-time intake flow of the air filter.

[0008] Optionally, the method further comprises: constructing a first mapping relationship between the rotation speed and the cycle oil supply amount and a first deterioration coefficient, and constructing a second mapping relationship between the rotation speed and the cycle oil supply amount and a second deterioration coefficient; determining the first deterioration coefficient corresponding to the real-time rotation speed and the real-time cycle oil supply amount of the diesel engine according to the first mapping relationship and the real-time rotation speed and the real-time cycle oil supply amount of the diesel engine; and determining the second deterioration coefficient corresponding to the real-time rotation speed and the real-time cycle oil supply amount of the diesel engine according to the second mapping relationship and the real-time rotation speed and the real-time cycle oil supply amount of the diesel engine.

[0009] Optionally, the method further comprises: obtaining the intake flow of the air filter after the diesel engine is powered on; and determining the oil consumption deterioration coefficient as a deterioration coefficient initial value in a case where the intake flow is less than or equal to an intake flow lower limit value.

[0010] Optionally, determining the oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure comprises: determining the oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure in a case where the intake flow is greater than an intake flow lower limit value.

[0011] According to another aspect of the present application, there is provided a device for maintaining an air filter, comprising: a first obtaining unit configured to obtain an intake pressure of the air filter, wherein the intake pressure is obtained by a pressure sensor installed at an air inlet of the air filter; a first determining unit configured to determine an oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure, wherein the oil consumption deterioration coefficient reflects a difference between an actual oil consumption amount and a theoretical oil consumption amount; a second determining unit configured to determine an oil consumption deterioration amount according to the oil consumption deterioration coefficient and the actual oil consumption amount, and determine an oil consumption deterioration cost according to the oil consumption deterioration amount, and generate a prompt information in a case where the oil consumption deterioration cost is higher than a maintenance cost of the air filter, the prompt information being used to prompt a user to maintain the air filter in time.

[0012] According to another aspect of the present application, there is provided a computer readable storage medium comprising a stored program, wherein the program controls a device where the computer readable storage medium is located to execute the method for maintaining an air filter when the program is running.

[0013] According to yet another aspect of the present application, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising a method for maintaining an air filter.

[0014] By applying the technical solution of the present application, the intake pressure of the air filter is obtained, the oil consumption deterioration coefficient corresponding to the air filter is determined according to the intake pressure, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption amount, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount. In the case where the oil consumption deterioration cost is higher than the maintenance cost of the air filter, a prompt information is generated, which is used to prompt the user to maintain the air filter in time. The present application considers the intake pressure of the air filter in the application of maintaining the air filter. Since the intake pressure of the air filter is a parameter that directly and quickly reacts to the performance of the air filter, the oil consumption deterioration coefficient corresponding to the air filter is determined according to the intake pressure, and then the accurate oil consumption deterioration amount is obtained. Under the premise of accurate oil consumption deterioration amount, the accurate determination of the oil consumption deterioration cost is realized, and then whether to maintain the air filter is determined by comparing the oil consumption deterioration cost with the maintenance cost of the air filter. The timely maintenance of the air filter is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The accompanying drawings should not be construed as an inappropriate limitation on the present application. In the drawings:

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for executing a method for maintaining an air filter is shown according to an embodiment of the present application;

[0017] Figure 2 A flowchart of a method for maintaining an air filter is shown according to an embodiment of the present application;

[0018] Figure 3 A schematic diagram of a maintenance principle of an air filter is shown according to an embodiment of the present application;

[0019] Figure 4 A first principle diagram for determining a deterioration coefficient is shown according to an embodiment of the present application;

[0020] Figure 5 A second principle diagram for determining a deterioration coefficient is shown according to an embodiment of the present application;

[0021] Figure 6 A third principle diagram for determining a deterioration coefficient is shown according to an embodiment of the present application;

[0022] Figure 7 A fourth principle diagram for determining a deterioration coefficient is shown according to an embodiment of the present application;

[0023] Figure 8 A fifth principle diagram for determining a deterioration coefficient is shown according to an embodiment of the present application;

[0024] Figure 9 A structure block diagram of a device for maintaining an air cleaner is shown according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] For the convenience of description, some nouns or terms related to the embodiments of the present application are described below:

[0029] Air cleaner: a filter before the intake of a diesel engine, used to filter dust in the air, generally installed before the supercharger.

[0030] As described in the background section, existing air filter maintenance methods suffer from untimely maintenance. To address this issue, embodiments of this application provide a method, apparatus, storage medium, and electronic device for maintaining air filters.

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a method of maintaining an air filter according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0033] The memory 104 can be used to store computer programs, such as software programs of application software and modules, such as a computer program corresponding to the method for maintaining the air filter according to the embodiments of the present application. The processor 102 can execute various functional applications and data processing, i.e., implement the method described above, by running the computer program stored in the memory 104. The memory 104 can include a high-speed random access memory, and can further include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 104 can further include memories disposed remotely with respect to the processor 102, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. The transmission device 106 is used to receive or send data via a network. The specific examples of the network can include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet in a wireless manner.

[0034] In the present embodiment, a method running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0035] Figure 2 is a flowchart of the method for maintaining the air filter according to the embodiments of the present application. As shown in Figure 2 , the method includes the following steps:

[0036] In step S201, an intake pressure of the air filter is acquired, wherein the intake pressure is acquired by a pressure sensor installed at an air inlet of the air filter;

[0037] Specifically, the pressure sensor can be a piezoresistive pressure sensor, a capacitive pressure sensor, a thin-film pressure sensor, etc.

[0038] In step S202, an oil consumption deterioration coefficient corresponding to the air filter is determined according to the intake pressure, wherein the oil consumption deterioration coefficient reflects a difference between an actual oil consumption and a theoretical oil consumption;

[0039] The air filter corresponding oil consumption deterioration coefficient is determined according to the intake air pressure, and the method comprises the following implementation manners:

[0040] A corresponding relationship between the intake air pressure and the oil consumption deterioration coefficient is constructed, and the oil consumption deterioration coefficient corresponding to the real-time intake air pressure is determined according to the corresponding relationship and the real-time intake air pressure;

[0041] The corresponding relationship can be a curve model in which the oil consumption deterioration coefficient changes with the intake air pressure.

[0042] The oil consumption deterioration coefficient reflects the difference between the actual oil consumption and the theoretical oil consumption, and the difference between the actual oil consumption and the theoretical oil consumption corresponds to the oil consumption deterioration coefficient. For example, the greater the oil consumption deterioration coefficient, the greater the difference between the actual oil consumption and the theoretical oil consumption, and the smaller the oil consumption deterioration coefficient, the smaller the difference between the actual oil consumption and the theoretical oil consumption. Of course, the specific corresponding relationship can be adjusted according to the actual situation.

[0043] In step S203, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount. When the oil consumption deterioration cost is higher than the maintenance cost of the air filter, a prompt information is generated, and the prompt information is used to prompt the user to maintain the air filter in time.

[0044] The prompt information can be voice prompt information, light prompt information, text prompt information, etc.

[0045] The oil consumption deterioration cost is determined according to the oil consumption deterioration amount, and the specific implementation is that the oil consumption deterioration total amount is obtained by integrating the oil consumption deterioration amount in the time domain, and then multiplied by the fuel unit price to obtain the oil consumption deterioration cost.

[0046] Specifically, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption, and the specific implementation is as follows: for example, the actual oil consumption is 200, and the oil consumption deterioration coefficient is 1.2. Then the oil consumption deterioration amount is equal to: 200*1.2-200. That is, the oil consumption deterioration coefficient is a positive number greater than 1 under this algorithm.

[0047] The method for maintaining the air filter of the application obtains the intake pressure of the air filter, determines the oil consumption degradation coefficient corresponding to the air filter according to the intake pressure, determines the oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption amount, and determines the oil consumption degradation cost according to the oil consumption degradation amount. In the case where the oil consumption degradation cost is higher than the maintenance cost of the air filter, a prompt information is generated to prompt the user to maintain the air filter in time. The scheme of the application considers the intake pressure in the application of maintaining the air filter. Since the intake pressure of the air filter is a parameter that directly and quickly reacts to the performance of the air filter, the oil consumption degradation coefficient corresponding to the air filter is determined according to the intake pressure, and then the accurate oil consumption degradation amount is obtained. Under the premise of accurate oil consumption degradation amount, the accurate determination of the oil consumption degradation cost is realized, and then whether to maintain the air filter is determined by comparing the oil consumption degradation cost with the maintenance cost of the air filter. The timely maintenance of the air filter is realized. Since the user is more sensitive to the cost in the use process, the user can maintain the air filter in time after the user is well informed.

[0048] In the method embodiment of the application, step S202, the oil consumption degradation coefficient corresponding to the air filter is determined according to the intake pressure, specifically comprising:

[0049] Step S2021, in the case where the intake pressure is less than the first lower limit value of the pressure, the oil consumption degradation coefficient corresponding to the air filter is determined as a preset coefficient, and the preset coefficient indicates that the oil consumption degradation amount has no influence on the maintenance of the air filter.

[0050] That is, in the case where the intake pressure is relatively small, it is confirmed that the intake resistance change is small, the optimization influence on the diesel engine is very small, that is, the oil consumption is not deteriorated, and at this time, the deterioration coefficient can be set as the preset coefficient. If the implementation mode of 200x1.2-200 is adopted, the deterioration coefficient is set to 1.

[0051] Step S2022, in the case where the intake pressure is greater than or equal to the first lower limit value of the pressure and less than the second lower limit value of the pressure, interpolation processing is performed between the preset coefficient and the first deterioration coefficient to obtain the oil consumption degradation coefficient corresponding to the air filter.

[0052] The step S2022 specifically comprises: determining the oil consumption deterioration coefficient according to a first relationship: (pressure Hi1-pressure Act1) / (pressure Act1-pressure Lo1)=(coefficient Hi1-L1) / (L1-coefficient Lo1), wherein L1 represents the oil consumption deterioration coefficient, pressure Hi1 represents the second pressure lower limit value, pressure Lo1 represents the first pressure lower limit value, pressure Act1 represents the real-time acquired intake pressure, coefficient Hi1 represents the first deterioration coefficient, and coefficient Lo1 represents the preset coefficient.

[0053] That is, in the case that the intake pressure is greater than or equal to the first pressure lower limit value and less than the second pressure lower limit value, an interpolation processing between the preset coefficient and the first deterioration coefficient is adopted, so that the oil consumption deterioration coefficient can be accurately determined by using the advantage of the interpolation processing.

[0054] The step S2023 comprises: in the case that the intake pressure is greater than or equal to the second pressure lower limit value and less than the pressure upper limit value, performing interpolation processing between the first deterioration coefficient and the second deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter, wherein the first deterioration coefficient and the second deterioration coefficient are determined according to the rotating speed and the circulating fuel supply amount of the diesel engine, and the air filter is installed on the diesel engine.

[0055] The step S2023 specifically comprises: in the case that the intake pressure is greater than or equal to the second pressure lower limit value and less than the pressure upper limit value, performing interpolation processing between the first deterioration coefficient and the second deterioration coefficient to obtain the oil consumption deterioration coefficient corresponding to the air filter, comprising: determining the oil consumption deterioration coefficient according to a second relationship: (pressure Hi2-pressure Act2) / (pressure Act2-pressure Lo2)=(coefficient Hi2-L2) / (L2-coefficient Lo2), wherein L2 represents the oil consumption deterioration coefficient, pressure Hi2 represents the pressure upper limit value, pressure Lo2 represents the second pressure lower limit value, pressure Act2 represents the real-time acquired intake pressure, coefficient Hi2 represents the second deterioration coefficient, and coefficient Lo2 represents the first deterioration coefficient.

[0056] That is, in the case that the intake pressure is greater than or equal to the second pressure lower limit value and less than the pressure upper limit value, an interpolation processing between the preset coefficient and the first deterioration coefficient is adopted, so that the oil consumption deterioration coefficient can be accurately determined by using the advantage of the interpolation processing.

[0057] Step S2024, in the case that the intake air pressure is greater than the pressure upper limit value, determining that the oil consumption deterioration coefficient corresponding to the air filter is an alarm deterioration coefficient, the alarm deterioration coefficient being used to indicate that the oil consumption deterioration amount is higher than an oil consumption deterioration amount threshold.

[0058] That is, in the case that the intake air pressure is higher than the pressure upper limit value, the air filter in this state will cause very severe damage to the diesel engine, so the alarm deterioration coefficient is set to quickly reach the alarm condition and remind the user to maintain the air filter in time. Specifically, the alarm deterioration coefficient can be set to 10000, 20000, etc.

[0059] Currently, the maintenance of the air filter is based on mileage or time, and is extremely dependent on the user's self-consciousness. When the diesel engine operates at a medium or low load, the air filter resistance has a small degree of differentiation, and the state of the air filter cannot be correctly determined according to the air filter resistance. When the air filter resistance increases, the combustion of the diesel engine deteriorates, and the specific fuel consumption increases. When the resistance is too large, the oil seal of the pressure end of the supercharger will leak oil, causing the engine oil to be consumed too quickly, thereby accelerating the wear of the engine and the rapid accumulation of dust in the aftertreatment. In view of the problem that the air filter resistance has a small degree of differentiation at a medium or low load, the patent latches the state of the air filter at a high load, continuously calculates the oil consumption deterioration caused by the air filter blockage, and timely reminds the user to maintain, thereby improving the user's attention, ensuring that the air filter is maintained in time, and avoiding adverse effects on the engine system.

[0060] In the method embodiment of the present application, the method further comprises:

[0061] corresponding relationship between the intake air flow of the air filter and the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value is constructed;

[0062] Specifically, the above corresponding relationship can be in the form of a MAP table, a curve, etc.

[0063] According to the corresponding relationship and the real-time intake air flow of the air filter, the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value corresponding to the real-time intake air flow are determined.

[0064] That is, the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value are not a fixed value, but vary with the change of the intake air flow of the air filter. The first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value thus set can meet the real-time and individualized needs, and are helpful for subsequent accurate determination of the oil consumption deterioration coefficient.

[0065] In the method embodiment of the present application, the method further comprises:

[0066] constructing a first mapping relationship between the rotation speed and the cycle fuel supply amount and a first deterioration coefficient, and constructing a second mapping relationship between the rotation speed and the cycle fuel supply amount and a second deterioration coefficient;

[0067] Specifically, the first mapping relationship and the second mapping relationship can be in the form of a MAP table, a curve, etc.

[0068] determining the first deterioration coefficient corresponding to the real-time rotation speed and the real-time cycle fuel supply amount according to the first mapping relationship and the real-time rotation speed and the real-time cycle fuel supply amount of the diesel engine;

[0069] determining the second deterioration coefficient corresponding to the real-time rotation speed and the real-time cycle fuel supply amount according to the second mapping relationship and the real-time rotation speed and the real-time cycle fuel supply amount of the diesel engine.

[0070] That is, the first deterioration coefficient and the second deterioration coefficient are not a fixed value, but vary with the rotation speed and the cycle fuel supply amount. The first deterioration coefficient and the second deterioration coefficient thus set can meet the real-time and individualized requirements and help to accurately determine the fuel consumption deterioration coefficient.

[0071] In the method embodiment of the application, the method further comprises:

[0072] after the diesel engine is powered on, obtaining the intake flow of the air filter;

[0073] in a case where the intake flow is less than or equal to a lower limit value of the intake flow, determining the fuel consumption deterioration coefficient as a deterioration coefficient initial value.

[0074] That is, the fuel consumption deterioration coefficient can also be determined according to the intake flow. Specifically, in a case where the intake flow is relatively small, the deterioration coefficient initial value stored in the ECU is determined as the fuel consumption deterioration coefficient. Because in a case where the intake flow is relatively small, the resistance of the air filter is relatively small and the measurement error is relatively large, directly using the deterioration coefficient initial value can avoid misjudgment.

[0075] In the method embodiment of the application, determining the fuel consumption deterioration coefficient corresponding to the air filter according to the intake pressure comprises:

[0076] in a case where the intake flow is greater than the lower limit value of the intake flow, determining the fuel consumption deterioration coefficient corresponding to the air filter according to the intake pressure.

[0077] That is, in a case where the intake flow is relatively large, the above-mentioned manner of determining the fuel consumption deterioration coefficient corresponding to the air filter according to the intake pressure is used to accurately determine the fuel consumption deterioration coefficient.

[0078] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the method for maintaining an air filter of this application will be described in detail below with reference to specific embodiments.

[0079] This embodiment relates to a specific method for maintaining an air filter, such as... Figures 3 to 8 As shown, it includes:

[0080] Figure 3 The intake air flow, speed, and intake pressure are measured by sensors, while the circulating fuel supply and real-time fuel consumption are calculated by the diesel engine electronic control unit. All of these signals can be obtained in the ECU.

[0081] The air filter resistance is divided into three levels, corresponding to the first lower pressure limit, the second lower pressure limit, and the upper pressure limit, respectively, representing different states of the air filter. The first deterioration coefficient and the second deterioration coefficient correspond to different degrees of fuel consumption deterioration when the air filter resistance increases.

[0082] After obtaining the engine speed and the circulating fuel supply, the ECU obtains the first degradation coefficient and the second degradation coefficient by looking up a table. After obtaining the intake air flow, the ECU obtains the first lower pressure limit, the second lower pressure limit, and the upper pressure limit by looking up a table.

[0083] The air filter pressure sensor obtains the filtered pressure, which is compared with the pressure limit to calculate the degradation coefficient. Real-time fuel consumption degradation is calculated using real-time fuel consumption and the degradation coefficient. This value is then integrated and multiplied by the fuel price to obtain the fuel consumption degradation cost. When the fuel consumption degradation cost exceeds the air filter maintenance cost, the user is reminded to perform timely maintenance. Because fuel consumption calculations for diesel engines are inaccurate under low load, a lower limit for the cyclic fuel supply is set to control integral activation. When the engine is stopped, the total fuel consumption degradation is stored in the ECU memory and retrieved from memory upon the next power-on.

[0084] Among them, such as Figure 3 As shown, the integral process is initiated when the circulating fuel supply is greater than the lower limit of the circulating fuel supply; that is, this condition is an enabling condition for integral.

[0085] There are four ways to calculate the fuel consumption degradation coefficient:

[0086] 1) such as Figure 4 As shown, when the filtered pressure is less than the first lower pressure limit, it is confirmed that the change in intake resistance is small and has very little impact on the optimization of the diesel engine. The degradation coefficient is set to 1, that is, the fuel consumption does not deteriorate.

[0087] 2) such as Figure 5 As shown, when the filtered pressure is between the first lower pressure limit and the second lower pressure limit, interpolation is performed between 1 and the first degradation coefficient to calculate the degradation coefficient.

[0088] 3) as shown in Figure 6 When the filtered pressure is between the second pressure lower limit value and the pressure upper limit, interpolation processing is performed between the first deterioration coefficient and the second deterioration coefficient to calculate the deterioration coefficient.

[0089] 4) as shown in Figure 7 When the filtered pressure is higher than the pressure upper limit, that is, the air filter in this state will cause very severe damage to the diesel engine, the deterioration coefficient is assigned a value of 10000 so as to quickly reach the alarm condition and remind the user to maintain in time.

[0090] The interpolation calculation formula (pressure Hi-pressure Act) / (pressure Act-pressure Lo)=(coefficient Hi-deterioration coefficient) / (deterioration coefficient-coefficient Lo), wherein pressure Hi, pressure Act, pressure Lo, coefficient Hi, and coefficient Lo are known (see the schematic diagram of different cases in Figure 5 、 Figure 6 ), and the final deterioration coefficient is calculated, and the calculation process is as shown in Figure 8 .

[0091] The present application proposes an air filter maintenance strategy based on oil consumption deterioration cost. By installing an intake pressure sensor before the air filter, the intake pressure is used to feedback the air filter state, the ECU measures the intake resistance in real time and calculates the oil consumption deterioration coefficient, and the total oil consumption deterioration cost after replacing the new air filter is obtained by integration. When the oil consumption deterioration cost is higher than the air filter maintenance cost, the user is reminded to maintain in time. For the problem that the air filter resistance has insufficient distinction under medium and low load, the patent latches the air filter state under heavy load and continuously calculates the oil consumption deterioration caused by air filter blockage.

[0092] The embodiments of the present application are applicable to diesel engines and can reflect the air filter state in real time, can ensure that the engine is in a safe operating state, and can prolong the service life of the engine. It is applied to all Beijing V, China VI, Europe VI and 4F products of related manufacturers.

[0093] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0094] The embodiment of the present application further provides a device for maintaining an air filter. It should be noted that the device for maintaining an air filter can be used to execute the method for maintaining an air filter provided by the embodiment of the present application. The device is used to realize the above-mentioned embodiment and preferred embodiment, and the description is not repeated. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiment is preferably realized in software, the realization of hardware or a combination of software and hardware is also possible and is conceived.

[0095] The device for maintaining an air filter provided by the embodiment of the present application is introduced below.

[0096] Figure 9 is a schematic diagram of the device for maintaining an air filter according to the embodiment of the present application. As shown in Figure 9 , the device comprises:

[0097] A first acquisition unit 91 is configured to acquire an intake pressure of an air filter, wherein the intake pressure is acquired by a pressure sensor installed at an air inlet of the air filter.

[0098] A first determination unit 92 is configured to determine an oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure, wherein the oil consumption deterioration coefficient reflects a difference between an actual oil consumption and a theoretical oil consumption.

[0099] A second determination unit 93 is configured to determine an oil consumption deterioration amount according to the oil consumption deterioration coefficient and the actual oil consumption, and determine an oil consumption deterioration cost according to the oil consumption deterioration amount. If the oil consumption deterioration cost is higher than a maintenance cost of the air filter, a prompt information is generated, wherein the prompt information is used to prompt a user to maintain the air filter in time.

[0100] The maintenance air filter of the application, the first acquisition unit acquires the air filter intake pressure, the first determination unit determines the oil consumption degradation coefficient corresponding to the air filter according to the intake pressure, the second determination unit determines the oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determines the oil consumption degradation cost according to the oil consumption degradation amount, in the case that the oil consumption degradation cost is higher than the maintenance cost of the air filter, the prompt information is generated, which is used to prompt the user to maintain the air filter in time. The scheme of the application considers the intake pressure in the application of maintaining the air filter. Since the intake pressure of the air filter is a parameter that directly and quickly reacts to the performance of the air filter, the oil consumption degradation coefficient corresponding to the air filter is determined according to the intake pressure, and then the accurate oil consumption degradation amount is obtained. Under the premise of accurate oil consumption degradation amount, the accurate determination of the oil consumption degradation cost is realized, and then whether to maintain the air filter is determined by comparing the oil consumption degradation cost higher than the maintenance cost of the air filter. The timely maintenance of the air filter is realized.

[0101] In the device embodiment of the application, the first determination unit includes a first determination module, a second determination module, a third determination module and a fourth determination module. The first determination module is used to determine that the oil consumption degradation coefficient corresponding to the air filter is a preset coefficient in the case that the intake pressure is less than the first pressure lower limit value, and the preset coefficient indicates that the oil consumption degradation amount has no influence on the maintenance of the air filter. The second determination module is used to interpolate between the preset coefficient and the first degradation coefficient to obtain the oil consumption degradation coefficient corresponding to the air filter in the case that the intake pressure is greater than or equal to the first pressure lower limit value and less than the second pressure lower limit value. The third determination module is used to interpolate between the first degradation coefficient and the second degradation coefficient to obtain the oil consumption degradation coefficient corresponding to the air filter in the case that the intake pressure is greater than or equal to the second pressure lower limit value and less than the pressure upper limit value, wherein the first degradation coefficient and the second degradation coefficient are determined according to the rotating speed and the circulating oil supply amount of the diesel engine, and the air filter is installed on the diesel engine. The fourth determination module is used to determine that the oil consumption degradation coefficient corresponding to the air filter is an alarm degradation coefficient in the case that the intake pressure is greater than the pressure upper limit value, and the alarm degradation coefficient is used to indicate that the oil consumption degradation amount is higher than the oil consumption degradation amount threshold.

[0102] Further, the second determining module is configured to determine the oil consumption deterioration coefficient according to a first relationship: (pressure Hi1-pressure Act1) / (pressure Act1-pressure Lo1)=(coefficient Hi1-L1) / (L1-coefficient Lo1), where L1 represents the oil consumption deterioration coefficient, pressure Hi1 represents the second pressure lower limit value, pressure Lo1 represents the first pressure lower limit value, pressure Act1 represents the real-time acquired intake pressure, coefficient Hi1 represents the first deterioration coefficient, and coefficient Lo1 represents the preset coefficient.

[0103] Further, the third determining module is configured to determine the oil consumption deterioration coefficient according to a second relationship: (pressure Hi2-pressure Act2) / (pressure Act2-pressure Lo2)=(coefficient Hi2-L2) / (L2-coefficient Lo2), where L2 represents the oil consumption deterioration coefficient, pressure Hi2 represents the pressure upper limit value, pressure Lo2 represents the second pressure lower limit value, pressure Act2 represents the real-time acquired intake pressure, coefficient Hi2 represents the second deterioration coefficient, and coefficient Lo2 represents the first deterioration coefficient.

[0104] In the device embodiment of the present application, the device further comprises a first constructing unit and a third determining unit, the first constructing unit is configured to construct a corresponding relationship between the intake flow of the air filter and the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value, and the third determining unit is configured to determine the first pressure lower limit value, the second pressure lower limit value and the pressure upper limit value corresponding to the real-time intake flow of the air filter according to the corresponding relationship and the real-time intake flow of the air filter.

[0105] In the device embodiment of the present application, the device further comprises a second constructing unit, a fourth determining unit and a fifth determining unit, the second constructing unit is configured to construct a first mapping relationship between the rotation speed and the circulating oil supply amount and a first deterioration coefficient, and construct a second mapping relationship between the rotation speed and the circulating oil supply amount and a second deterioration coefficient, the fourth determining unit is configured to determine the first deterioration coefficient corresponding to the real-time rotation speed and real-time circulating oil supply amount of the diesel engine according to the first mapping relationship and the real-time rotation speed and real-time circulating oil supply amount of the diesel engine, and the fifth determining unit is configured to determine the second deterioration coefficient corresponding to the real-time rotation speed and real-time circulating oil supply amount of the diesel engine according to the second mapping relationship and the real-time rotation speed and real-time circulating oil supply amount of the diesel engine.

[0106] In the device embodiment of the present application, the device further comprises a second acquisition unit and a sixth determination unit, the second acquisition unit is configured to acquire the intake flow of the air filter after the diesel engine is powered on, and the sixth determination unit is configured to determine the oil consumption deterioration coefficient as the deterioration coefficient initial value in the case that the intake flow is less than or equal to the lower limit value of the intake flow.

[0107] In the device embodiment of the present application, the first determination unit further comprises a fifth determination module, the fifth determination module is configured to determine the oil consumption deterioration coefficient corresponding to the air filter according to the intake pressure in the case that the intake flow is greater than the lower limit value of the intake flow.

[0108] The device for maintaining the air filter comprises a processor and a memory, and the first acquisition unit, the first determination unit and the second determination unit are stored in the memory as program units, and the corresponding functions are realized by the processor executing the program units stored in the memory. The modules are located in the same processor, or the modules are located in different processors in any combination.

[0109] The processor comprises a core, and the core retrieves the corresponding program unit from the memory. The core can be one or more, and the existing maintenance scheme for the air filter can be solved by adjusting the core parameters.

[0110] The memory can include a non-permanent memory in a computer readable medium, a random access memory (RAM) and / or a non-volatile memory such as a read-only memory (ROM) or a flash memory (flash RAM), and the memory comprises at least one memory chip.

[0111] The embodiment of the present application provides a computer readable storage medium, the computer readable storage medium comprises a stored program, wherein when the program runs, the device where the computer readable storage medium is located executes the method for maintaining the air filter.

[0112] Specifically, the method for maintaining the air filter comprises:

[0113] In step S201, the intake pressure of the air filter is acquired, wherein the intake pressure is acquired by a pressure sensor installed at an air inlet of the air filter;

[0114] In step S202, the oil consumption deterioration coefficient corresponding to the air filter is determined according to the intake pressure, wherein the oil consumption deterioration coefficient reflects the difference between the actual oil consumption and the theoretical oil consumption;

[0115] In step S203, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption amount, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount, and a prompt information is generated to prompt the user to maintain the air filter in time in the case that the oil consumption deterioration cost is higher than the maintenance cost of the air filter.

[0116] The embodiment of the present application provides a processor used for running a program, wherein the program performs the method for maintaining the air filter when running.

[0117] Specifically, the method for maintaining the air filter comprises the following steps.

[0118] In step S201, the intake pressure of the air filter is acquired, wherein the intake pressure is acquired by a pressure sensor installed at the air inlet of the air filter.

[0119] In step S202, the oil consumption deterioration coefficient corresponding to the air filter is determined according to the intake pressure, wherein the oil consumption deterioration coefficient reflects the difference between the actual oil consumption amount and the theoretical oil consumption amount.

[0120] In step S203, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption amount, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount, and a prompt information is generated to prompt the user to maintain the air filter in time in the case that the oil consumption deterioration cost is higher than the maintenance cost of the air filter.

[0121] The embodiment of the present application provides an electronic device, comprising one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs comprise a method for maintaining the air filter.

[0122] The embodiment of the present application provides a device, comprising a processor, a memory, and a program stored in the memory and executable on the processor, and the processor executes the steps of the method for maintaining the air filter. The device herein can be a server, a PC, a PAD, a mobile phone, etc.

[0123] Specifically, the method for maintaining the air filter comprises the following steps.

[0124] In step S201, the intake pressure of the air filter is acquired, wherein the intake pressure is acquired by a pressure sensor installed at the air inlet of the air filter.

[0125] In step S202, the oil consumption deterioration coefficient corresponding to the air cleaner is determined according to the intake air pressure, wherein the oil consumption deterioration coefficient reflects the difference between the actual oil consumption and the theoretical oil consumption.

[0126] In step S203, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount, and the prompt information is generated to prompt the user to maintain the air cleaner in time when the oil consumption deterioration cost is higher than the maintenance cost of the air cleaner.

[0127] The application also provides a computer program product, which is adapted to execute the program of the following method steps when executed on a data processing device:

[0128] In step S201, the intake air pressure of the air cleaner is acquired, wherein the intake air pressure is acquired by a pressure sensor installed at the air inlet of the air cleaner.

[0129] In step S202, the oil consumption deterioration coefficient corresponding to the air cleaner is determined according to the intake air pressure, wherein the oil consumption deterioration coefficient reflects the difference between the actual oil consumption and the theoretical oil consumption.

[0130] In step S203, the oil consumption deterioration amount is determined according to the oil consumption deterioration coefficient and the actual oil consumption, and the oil consumption deterioration cost is determined according to the oil consumption deterioration amount, and the prompt information is generated to prompt the user to maintain the air cleaner in time when the oil consumption deterioration cost is higher than the maintenance cost of the air cleaner.

[0131] Obviously, those skilled in the art should understand that the modules or steps of the application described above can be realized by general computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and they can be realized by program codes executable by the computing devices, so that they can be stored in storage devices and executed by the computing devices, and in some cases, the steps shown or described can be executed in different order, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps can be manufactured into a single integrated circuit module. Thus, the application is not limited to any specific combination of hardware and software.

[0132] Those skilled in the art will appreciate that embodiments of the application can be readily used as software, hardware, or a combination of software and hardware. In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0133] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0134] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0135] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0136] In one typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0137] The memory can include non-persistent memory and / or persistent memory, such as flash memory, read-only memory (ROM), and / or volatile or non-volatile random access memory (RAM), among others. The memory is an example of computer readable media.

[0138] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0139] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0140] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0141] 1) The method for maintaining the air filter according to the present application, by obtaining the intake pressure of the air filter, determining the oil consumption degradation coefficient corresponding to the air filter according to the intake pressure, determining the oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determining the oil consumption degradation cost according to the oil consumption degradation amount, generating prompt information in the case that the oil consumption degradation cost is higher than the maintenance cost of the air filter, the prompt information is used to prompt the user to maintain the air filter in time. The scheme of the present application considers the intake pressure in the application of maintaining the air filter. Since the intake pressure of the air filter is a parameter that directly and quickly reacts the performance of the air filter, the oil consumption degradation coefficient corresponding to the air filter is determined according to the intake pressure, and then the accurate oil consumption degradation amount is obtained. Under the premise of accurate oil consumption degradation amount, the accurate determination of the oil consumption degradation cost is realized, and then whether to maintain the air filter is determined by comparing the oil consumption degradation cost with the maintenance cost of the air filter. The timely maintenance of the air filter is realized.

[0142] 2) The device for maintaining the air filter according to the present application, the first obtaining unit obtains the intake pressure of the air filter, the first determining unit determines the oil consumption degradation coefficient corresponding to the air filter according to the intake pressure, the second determining unit determines the oil consumption degradation amount according to the oil consumption degradation coefficient and the actual oil consumption, and determines the oil consumption degradation cost according to the oil consumption degradation amount, and generates prompt information in the case that the oil consumption degradation cost is higher than the maintenance cost of the air filter, the prompt information is used to prompt the user to maintain the air filter in time. The scheme of the present application considers the intake pressure in the application of maintaining the air filter. Since the intake pressure of the air filter is a parameter that directly and quickly reacts the performance of the air filter, the oil consumption degradation coefficient corresponding to the air filter is determined according to the intake pressure, and then the accurate oil consumption degradation amount is obtained. Under the premise of accurate oil consumption degradation amount, the accurate determination of the oil consumption degradation cost is realized, and then whether to maintain the air filter is determined by comparing the oil consumption degradation cost with the maintenance cost of the air filter. The timely maintenance of the air filter is realized.

[0143] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for maintaining an air filter, characterized in that, include: The intake pressure of the air filter is obtained, wherein the intake pressure is obtained by a pressure sensor installed at the air inlet of the air filter; The fuel consumption degradation coefficient corresponding to the air filter is determined based on the intake pressure, wherein the fuel consumption degradation coefficient reflects the difference between the actual fuel consumption and the theoretical fuel consumption. The amount of fuel consumption degradation is determined based on the fuel consumption degradation coefficient and the actual fuel consumption, and the cost of fuel consumption degradation is determined based on the amount of fuel consumption degradation. If the cost of fuel consumption degradation is higher than the maintenance cost of the air filter, a prompt message is generated to remind the user to maintain the air filter in a timely manner.

2. The method according to claim 1, characterized in that, Determining the fuel consumption degradation coefficient corresponding to the air filter based on the intake pressure includes: When the intake pressure is less than the first lower pressure limit, the fuel consumption degradation coefficient corresponding to the air filter is determined to be a preset coefficient, and the preset coefficient indicates that the fuel consumption degradation does not affect the maintenance of the air filter. When the intake pressure is greater than or equal to the first lower pressure limit and less than the second lower pressure limit, interpolation is performed between the preset coefficient and the first deterioration coefficient to obtain the fuel consumption deterioration coefficient corresponding to the air filter. When the intake pressure is greater than or equal to the second lower pressure limit and less than the upper pressure limit, interpolation is performed between the first deterioration coefficient and the second deterioration coefficient to obtain the fuel consumption deterioration coefficient corresponding to the air filter. The first deterioration coefficient and the second deterioration coefficient are both determined based on the diesel engine speed and the circulating fuel supply. The air filter is installed on the diesel engine. When the intake pressure is greater than the upper pressure limit, the fuel consumption degradation coefficient corresponding to the air filter is determined as the alarm degradation coefficient, which is used to indicate that the fuel consumption degradation is higher than the fuel consumption degradation threshold.

3. The method according to claim 2, characterized in that, When the intake pressure is greater than or equal to the first lower pressure limit and less than the second lower pressure limit, interpolation is performed between the preset coefficient and the first deterioration coefficient to obtain the fuel consumption deterioration coefficient corresponding to the air filter. This includes determining the fuel consumption deterioration coefficient according to the first relationship: (pressure Hi1-pressure Act1) / (pressure Act1-pressure Lo1)=(coefficient Hi1-L1) / (L1-coefficient Lo1), where L1 represents the fuel consumption deterioration coefficient, pressure Hi1 represents the second lower pressure limit, pressure Lo1 represents the first lower pressure limit, pressure Act1 represents the real-time intake pressure, coefficient Hi1 represents the first deterioration coefficient, and coefficient Lo1 represents the preset coefficient. And / or, When the intake pressure is greater than or equal to the second lower pressure limit and less than the upper pressure limit, interpolation is performed between the first degradation coefficient and the second degradation coefficient to obtain the fuel consumption degradation coefficient corresponding to the air filter. This includes determining the fuel consumption degradation coefficient according to the second relationship: (pressure Hi2 - pressure Act2) / (pressure Act2 - pressure Lo2) = (coefficient Hi2 - L2) / (L2 - coefficient Lo2), where L2 represents the fuel consumption degradation coefficient, pressure Hi2 represents the upper pressure limit, pressure Lo2 represents the second lower pressure limit, pressure Act2 represents the real-time intake pressure, coefficient Hi2 represents the second degradation coefficient, and coefficient Lo2 represents the first degradation coefficient.

4. The method according to claim 2, characterized in that, The method further includes: Establish the correspondence between the air intake flow rate of the air filter and the first lower pressure limit, the second lower pressure limit, and the upper pressure limit, respectively; Based on the correspondence and the real-time airflow of the air filter, the first lower pressure limit, the second lower pressure limit, and the upper pressure limit corresponding to the real-time airflow are determined.

5. The method according to claim 2, characterized in that, The method further includes: A first mapping relationship is established between the rotational speed and the circulating oil supply quantity and a first degradation coefficient; and a second mapping relationship is established between the rotational speed and the circulating oil supply quantity and a second degradation coefficient. Based on the first mapping relationship and the real-time speed and real-time circulating fuel supply of the diesel engine, the first degradation coefficient corresponding to the real-time speed and real-time circulating fuel supply is determined; Based on the second mapping relationship and the real-time speed and real-time circulating fuel supply of the diesel engine, the second degradation coefficient corresponding to the real-time speed and real-time circulating fuel supply is determined.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: After the diesel engine is powered on, the intake air flow rate of the air filter is obtained; When the intake air flow rate is less than or equal to the lower limit of the intake air flow rate, the fuel consumption degradation coefficient is determined as the initial value of the degradation coefficient.

7. The method according to claim 6, characterized in that, Determining the fuel consumption degradation coefficient corresponding to the air filter based on the intake pressure includes: When the intake air flow rate is greater than the lower limit of the intake air flow rate, the fuel consumption degradation coefficient corresponding to the air filter is determined based on the intake air pressure.

8. A device for maintaining an air filter, characterized in that, include: The first acquisition unit is used to acquire the intake pressure of the air filter, wherein the intake pressure is acquired by a pressure sensor installed at the air inlet of the air filter; The first determining unit is used to determine the fuel consumption degradation coefficient corresponding to the air filter based on the intake pressure, wherein the fuel consumption degradation coefficient reflects the difference between the actual fuel consumption and the theoretical fuel consumption. The second determining unit is used to determine the amount of fuel consumption degradation based on the fuel consumption degradation coefficient and the actual fuel consumption, and to determine the fuel consumption degradation cost based on the amount of fuel consumption degradation. If the fuel consumption degradation cost is higher than the maintenance cost of the air filter, a prompt message is generated to remind the user to maintain the air filter in a timely manner.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method for maintaining an air filter as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for performing maintenance of an air filter as described in any one of claims 1 to 7.

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