CN114673614B - Method and device for determining working state of air filter and vehicle - Google Patents
Method and device for determining working state of air filter and vehicle Download PDFInfo
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- CN114673614B CN114673614B CN202210283471.2A CN202210283471A CN114673614B CN 114673614 B CN114673614 B CN 114673614B CN 202210283471 A CN202210283471 A CN 202210283471A CN 114673614 B CN114673614 B CN 114673614B
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- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
- F02M35/09—Clogging indicators ; Diagnosis or testing of air cleaners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a method and a device for determining the working state of an air filter and a vehicle, wherein an engine comprises the air filter, and the method comprises the following steps: acquiring air filtered air inlet pressure of a plurality of time nodes to obtain a plurality of target air inlet pressures; calculating an average value of target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein the first preset condition is that the running time of the engine is less than or equal to preset time and the running mileage of the engine is less than or equal to preset mileage; calculating an average value of target air inlet pressure meeting a second preset condition to obtain second average air inlet pressure, wherein the second preset condition is that the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure. The method solves the problem that the working state of the air filter cannot be judged automatically in the prior art.
Description
Technical Field
The present application relates to the field of engine technologies, and in particular, to a method and apparatus for determining an operating state of an air filter, a computer readable storage medium, a processor, and a vehicle.
Background
The engine needs clean air, the air filter is an important part for ensuring the air cleanliness, especially in the six stages of China, the importance of the air filter is improved again, if the air filter cannot be maintained or replaced timely, the engine is blocked to a certain extent except for abnormal mechanical abrasion, and abnormal flameout and post-treatment burning of the engine are caused in serious cases.
At present, the air filter is used for maintenance, and part of middle-high-end vehicle models mainly depend on the air filter and are provided with an alarm indicator for informing a user when to carry out maintenance. More commonly, users make a certain degree of judgment through experience, which easily causes untimely maintenance and abrasion and aftertreatment blockage of the engine.
The above information disclosed in the background section is only for enhancement of understanding of the background art from the technology described herein and, therefore, may contain some information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
The main object of the present application is to provide a method and apparatus for determining an operating state of air filtration, a computer readable storage medium, a processor and a vehicle, so as to solve the problem that the operating state of air filtration cannot be automatically determined to be abnormal in the prior art.
According to an aspect of the embodiment of the present invention, there is provided a method for determining an operating state of an air filter, an engine including the air filter, the method including: acquiring air filtered air inlet pressure of a plurality of time nodes when the engine is in a standard working condition, and obtaining a plurality of target air inlet pressures; calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is less than or equal to preset time, and the running mileage of the engine is less than or equal to preset mileage; calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is that the second average air inlet pressure is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than preset time, and the running mileage of the engine is longer than preset mileage; and determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure.
Optionally, determining whether the working state of the air filter is abnormal according to the first average air intake pressure and the second average air intake pressure includes: determining that the working state of the air filter is abnormal and sending prompt information of maintenance under the condition that a third preset condition and/or a fourth preset condition are met, wherein the third preset condition is that the difference value between the first average air inlet pressure and the second average air inlet pressure is larger than a first preset value, and the fourth preset condition is that the second average air inlet pressure is smaller than a second preset value; and under the condition that the third preset condition and the fourth preset condition are not met, determining that the working state of the air filter is normal and sending prompt information without maintenance.
Optionally, calculating an average value of the target intake air pressure that meets a first preset condition, to obtain a first average intake air pressure, including: acquiring the target air inlet pressure meeting the first preset condition to obtain a plurality of first target air inlet pressures; deleting the maximum value and the minimum value of the first target air inlet pressure to obtain a plurality of first preparation air inlet pressures; and calculating the average value of a plurality of first preparation air inlet pressures to obtain the first average air inlet pressure.
Optionally, obtaining the target intake air pressure that meets the first preset condition, to obtain a plurality of first target intake air pressures includes: a first judging step of sequentially judging whether all the target intake pressures meet the first preset condition; a first counting step of adding one to a first number in the case where the target intake air pressure satisfies the first preset condition; a second judging step of judging whether the first number is greater than or equal to a first predetermined number; and a first repeating step of repeating the first judging step, the counting step, and the second judging step until the first number is greater than or equal to the first predetermined number, to obtain at least the first predetermined number of the first target intake pressures.
Optionally, calculating an average value of the target intake air pressure that meets a second preset condition, to obtain a second average intake air pressure, including: acquiring the target air inlet pressure meeting the second preset condition to obtain a plurality of second target air inlet pressures; deleting the maximum value and the minimum value in the second target air inlet pressures to obtain a plurality of second preparation air inlet pressures; and calculating the average value of a plurality of second preparation air inlet pressures to obtain the second average air inlet pressure.
Optionally, obtaining the target intake air pressure that meets the second preset condition, to obtain a plurality of second target intake air pressures includes: a third judging step of sequentially judging whether all the target intake pressures meet the second preset condition; a second counting step of adding one to a second number in the case where the target intake air pressure satisfies the second preset condition; a fourth judging step of judging whether the second number is greater than or equal to a second predetermined number; and a second repeating step of repeating the third judging step, the second counting step, and the fourth judging step until the second number is greater than or equal to the second predetermined number, to obtain at least the second target intake air pressure of the second predetermined number.
Optionally, the standard working condition is a working condition that the engine simultaneously meets a first working condition, a second working condition and a third working condition, the first working condition is that the rotating speed of the engine is larger than a preset rotating speed, the second working condition is that a difference value between the torque at the current time point and the torque at the historical time point is in a first preset range, the third working condition is that a difference value between the air inlet flow at the current time point and the air inlet flow at the historical time point is in a second preset range, and the historical time point and the current time point are separated by a preset time.
According to another aspect of the embodiment of the present invention, there is also provided a device for determining an operating state of an air filter, an engine including the air filter, the device including: the acquisition unit is used for acquiring air-filtered air inlet pressure of a plurality of time nodes under the condition that the engine is in a standard condition to obtain a plurality of target air inlet pressures; the first calculation unit is used for calculating the average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to preset time, and the running mileage of the engine is smaller than or equal to preset mileage; the second calculation unit is used for calculating the average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is that the second average air inlet pressure is positioned at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time, and the running mileage of the engine is longer than the preset mileage; and the determining unit is used for determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure.
According to still another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program performs any one of the methods.
According to still another aspect of the embodiment of the present invention, there is further provided a processor, where the processor is configured to execute a program, where the program executes any one of the methods.
According to an aspect of an embodiment of the present invention, there is also provided a vehicle including an engine, one or more processors, a memory, the engine including an air filter, 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 instructions for performing any of the methods.
In the method for determining the working state of the air filter, firstly, under the condition that the engine is in a standard working condition, air inlet pressures of the air filter of a plurality of time nodes are obtained, and a plurality of target air inlet pressures are obtained; then, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first average air inlet pressure is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage; then, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein the second preset condition is that when the second preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and finally, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure. According to the method, by collecting the air inlet pressure of the air filter in a new use period and the air inlet pressure of the air filter in a longer time, as the air inlet pressure is lower when the air filter needs maintenance, whether the working state of the air filter is abnormal can be determined by comparing the air inlet pressure with the air inlet pressure of the air filter in the new use period and the air inlet pressure of the air filter in the longer time, so that whether the air filter needs maintenance or not is determined, and the problem that the working state of the air filter cannot be automatically judged in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 illustrates a flow chart of a method of determining an operational state of air filtration according to one embodiment of the present application;
FIG. 2 illustrates a flow chart of a method of determining an operational state of air filtration in accordance with another specific embodiment of the present application;
fig. 3 shows a schematic diagram of a device for determining the operating state of an air filter according to an embodiment of the present application.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
For convenience of description, the following will describe some terms or terms related to the embodiments of the present application:
air filtering: an air cleaner has a replaceable filter element therein. If the filter element is accumulated with ash to a certain extent, ash removal operation is needed, and the filter element needs to be replaced after a plurality of times.
Air filtration pressure difference sensor: and the device is independently arranged on the air filter, and the air inlet pressure of the air filter is measured.
A rack: the test equipment for calibrating the engine is used for calibrating various performance parameters of the engine, including rotation speed, torque, oil injection quantity, emission and the like.
As described in the background art, in order to solve the foregoing problem, in an exemplary embodiment of the present application, a method for determining an operating state of an air filter, a determining device, a computer readable storage medium, a processor, and a vehicle are provided.
According to the embodiment of the application, a method for determining the working state of air filtering is provided.
Fig. 1 is a flowchart of a method for determining an operating state of air filtering according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, under the condition that the engine is in a standard working condition, acquiring air-filtered air inlet pressures of a plurality of time nodes to obtain a plurality of target air inlet pressures;
step S102, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage;
step S103, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time, and the running mileage of the engine is longer than the preset mileage;
step S104, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure.
In the method for determining the working state of the air filter, firstly, under the condition that the engine is in a standard working condition, acquiring the air inlet pressure of the air filter of a plurality of time nodes to obtain a plurality of target air inlet pressures; then, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first average air inlet pressure is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage; then, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein the second preset condition is that when the second preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and finally, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure. According to the method, by collecting the air inlet pressure of the air filter in a new use period and the air inlet pressure of the air filter in a longer time, as the air inlet pressure is lower when the air filter needs maintenance, whether the working state of the air filter is abnormal can be determined by comparing the air inlet pressure with the air inlet pressure of the air filter in the new use period and the air inlet pressure of the air filter in the longer time, so that whether the air filter needs maintenance or not is determined, and the problem that the working state of the air filter cannot be automatically judged in the prior art is solved.
The air intake pressure of the air filter is measured by the air filter pressure difference sensor.
It should also be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
In an embodiment of the present application, determining whether the working state of the air filter is abnormal according to the first average intake pressure and the second average intake pressure includes: determining that the working state of the air filter is abnormal and sending prompt information of maintenance under the condition that a third preset condition and/or a fourth preset condition are met, wherein the third preset condition is that the difference value between the first average air inlet pressure and the second average air inlet pressure is larger than a first preset value, and the fourth preset condition is that the second average air inlet pressure is smaller than a second preset value; and under the condition that the third preset condition and the fourth preset condition are not met, determining that the working state of the air filter is normal and sending prompt information without maintenance. In this embodiment, as shown in fig. 2, in the case where the third preset condition and/or the fourth preset condition are satisfied, that is, in the case where the difference between the average value of the intake pressures in the new use period of the N air filters and the average value of the intake pressures in the longer use period of the M air filters reaches the preset difference value capable of determining the abnormality of the operation state of the air filters and/or the average value of the intake pressures in the longer use period of the M air filters reaches the preset intake pressure value capable of determining the abnormality of the operation state of the air filters, the operation state abnormality of the air filters is determined and the maintenance prompt information is transmitted, and in the case where neither the third preset condition nor the fourth preset condition is satisfied, that is, in the case where the difference between the average value of the intake pressures in the new use period of the N air filters and the average value of the intake pressures in the longer use period of the M air filters does not reach the preset difference value capable of determining the abnormality of the operation state of the air filters and the average value of the intake pressures in the longer use period of the M air filters does not reach the preset pressure value capable of determining the abnormality of the operation state of the air filters, the maintenance prompt information is determined and the maintenance prompt information is not required.
The maintenance prompt information and the maintenance prompt information without maintenance are presented through the instrument, delay is avoided, and meanwhile, maintenance of the air filter can be excessive but cannot be delayed.
In one embodiment of the present application, calculating an average value of the target intake air pressure that satisfies a first preset condition, to obtain a first average intake air pressure includes: acquiring the target air inlet pressure meeting the first preset condition to obtain a plurality of first target air inlet pressures; deleting the maximum value and the minimum value of the first target air intake pressure to obtain a plurality of first preparation air intake pressures; and calculating an average value of the plurality of first preliminary intake pressures to obtain the first average intake pressure. In this embodiment, the obtained plurality of first target intake pressures are all intake pressures in the new use period of air filtration, and since the first average intake pressure is obtained by calculating the average value of the plurality of first preliminary intake pressures, the first average intake pressure can objectively and accurately represent the intake pressure in the new use period of air filtration.
In an embodiment of the present application, obtaining the target intake air pressure that satisfies the first preset condition to obtain a plurality of first target intake air pressures includes: a first judging step of sequentially judging whether all the target intake pressures meet the first preset condition; a first counting step of adding one to the first number if the target intake pressure satisfies the first preset condition; a second judging step of judging whether the first number is greater than or equal to a first predetermined number; and a first repeating step of sequentially repeating the first determining step, the counting step, and the second determining step at least once until the first number is greater than or equal to the first predetermined number, thereby obtaining at least the first target intake pressure of the first predetermined number. In this embodiment, the obtained plurality of first target intake pressures are all target intake pressures satisfying a first preset condition, that is, the obtained plurality of first target intake pressures are all intake pressures in a new use period of air filtration, and the number of collected intake pressures in the new use period of air filtration is ensured to reach the preset number by obtaining the first preset number of first target intake pressures, so that accidental occurrence is avoided, and accuracy of judging the working state of the air filtration is improved.
In one embodiment of the present application, calculating an average value of the target intake air pressures that satisfies a second preset condition to obtain a second average intake air pressure includes: acquiring the target air inlet pressure meeting the second preset condition to obtain a plurality of second target air inlet pressures; deleting the maximum value and the minimum value in the second target air intake pressures to obtain a plurality of second preparation air intake pressures; and calculating an average value of the plurality of second preliminary intake pressures to obtain the second average intake pressure. In this embodiment, the plurality of second target intake pressures obtained are all intake pressures for which air filtration is used for a long time, and since the second average intake pressure is obtained by calculating the average value of the plurality of second preliminary intake pressures, the second average intake pressure can objectively and accurately represent the intake pressure for which air filtration is used for a long time.
In an embodiment of the present application, obtaining the target intake air pressure that satisfies the second preset condition to obtain a plurality of second target intake air pressures includes: a third judging step of sequentially judging whether all the target intake pressures meet the second preset condition; a second counting step of adding one to the second number if the target intake pressure satisfies the second preset condition; a fourth judgment step of judging whether the second number is greater than or equal to a second predetermined number; and a second repeating step of sequentially repeating the third determining step, the second counting step, and the fourth determining step at least once until the second number is greater than or equal to the second predetermined number, thereby obtaining at least the second target intake pressure of the second predetermined number. In this embodiment, the obtained plurality of second target intake pressures are all target intake pressures that meet the second preset condition, that is, the obtained plurality of second target intake pressures are all intake pressures for a longer time for air filtration, and the acquired number of intake pressures for a longer time for air filtration is guaranteed to reach the preset number by acquiring the second target intake pressures for a second preset number, so that accidents are avoided, and accuracy of judging the working state of the air filtration is improved.
In an embodiment of the present application, the standard working condition is a working condition that the engine simultaneously satisfies a first working condition, a second working condition and a third working condition, the first working condition is that a rotational speed of the engine is greater than a predetermined rotational speed, the second working condition is that a difference between a torque at a current time point and a torque at a historical time point is within a first predetermined range, the third working condition is that a difference between an intake air flow at the current time point and an intake air flow at the historical time point is within a second predetermined range, and the historical time point and the current time point are separated by a predetermined time. In the embodiment, the engine meets the working conditions of the first working condition, the second working condition and the third working condition simultaneously, the engine and the air filter are guaranteed to be in normal and stable running states, the accuracy of measuring the air inlet pressure of each target is further guaranteed, and the accuracy of judging the working state of the air filter is further improved.
The rotational speed of the engine, the difference between the torque at the current time point and the torque at the history time point, and the difference between the intake air flow rate at the current time point and the intake air flow rate at the history time point are all measured by the bench.
The embodiment of the application also provides a device for determining the working state of the air filter, and the device for determining the working state of the air filter can be used for executing the method for determining the working state of the air filter. The following describes a device for determining the working state of the air filter provided in the embodiment of the present application.
Fig. 3 is a schematic diagram of a determining device for an operating state of air filtering according to an embodiment of the present application. As shown in fig. 3, the apparatus includes:
an acquisition unit 10 that acquires air-filtered intake pressures at a plurality of time nodes under a standard condition of the engine, and obtains a plurality of target intake pressures;
a first calculation unit 20 that calculates an average value of the target intake air pressure that satisfies a first preset condition, where when the first preset condition is a time node corresponding to the target intake air pressure, the running time of the engine is less than or equal to a preset time and the running mileage of the engine is less than or equal to a preset mileage;
a second calculating unit 30 for calculating an average value of the target intake air pressure satisfying a second preset condition, to obtain a second average intake air pressure, where the second preset condition is that when the second preset condition is at a time node corresponding to the target intake air pressure, the running time of the engine is longer than a preset time and the running mileage of the engine is longer than a preset mileage;
And a determining unit 40 configured to determine whether or not the operation state of the air filter is abnormal based on the first average intake pressure and the second average intake pressure.
In the device for determining the working state of the air filter, an acquisition unit acquires air inlet pressures of the air filter of a plurality of time nodes under the standard working condition of the engine to obtain a plurality of target air inlet pressures; the first calculation unit is used for calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to preset time, and the running mileage of the engine is smaller than or equal to preset mileage; the second calculation unit calculates an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein the second preset condition is that when the second preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and a determining unit configured to determine whether or not an operation state of the air filter is abnormal based on the first average intake pressure and the second average intake pressure. The device is through gathering the air inlet pressure that the new use period of air filter and use the air inlet pressure of longer time, because air filter the air inlet pressure when needing maintenance is lower, compares the average between them, can confirm whether the operating condition of air filter is unusual to confirm whether air filter needs maintenance, solved the unusual problem of the operating condition of unable automatic judgement air filter among the prior art.
The air intake pressure of the air filter is measured by the air filter pressure difference sensor.
In one embodiment of the present application, the determining unit includes a first determining module and a second determining module, where the first determining module is configured to determine that the working state of the air filter is abnormal and send a prompt for maintenance when a third preset condition and/or a fourth preset condition are met, where the third preset condition is that a difference between the first average intake pressure and the second average intake pressure is greater than a first predetermined value, and the fourth preset condition is that the second average intake pressure is less than a second predetermined value; the second determining module is configured to determine that the working state of the air filter is normal and send prompt information that no maintenance is required when the third preset condition and the fourth preset condition are both not satisfied. In this embodiment, as shown in fig. 2, in the case where the third preset condition and/or the fourth preset condition are satisfied, that is, in the case where the difference between the average value of the intake pressures in the new use period of the N air filters and the average value of the intake pressures in the longer use period of the M air filters reaches the preset difference value capable of determining the abnormality of the operation state of the air filters and/or the average value of the intake pressures in the longer use period of the M air filters reaches the preset intake pressure value capable of determining the abnormality of the operation state of the air filters, the operation state abnormality of the air filters is determined and the maintenance prompt information is transmitted, and in the case where neither the third preset condition nor the fourth preset condition is satisfied, that is, in the case where the difference between the average value of the intake pressures in the new use period of the N air filters and the average value of the intake pressures in the longer use period of the M air filters does not reach the preset difference value capable of determining the abnormality of the operation state of the air filters and the average value of the intake pressures in the longer use period of the M air filters does not reach the preset pressure value capable of determining the abnormality of the operation state of the air filters, the maintenance prompt information is determined and the maintenance prompt information is not required.
The maintenance prompt information and the maintenance prompt information without maintenance are presented through the instrument, delay is avoided, and meanwhile, maintenance of the air filter can be excessive but cannot be delayed.
In an embodiment of the present application, the first calculating unit includes a first obtaining module, a first deleting module, and a first calculating module, where the first obtaining module is configured to obtain the target intake air pressure that meets the first preset condition, so as to obtain a plurality of first target intake air pressures; the first deleting module is configured to delete a plurality of maximum values and minimum values of the first target intake pressures to obtain a plurality of first preliminary intake pressures; the first calculation module is configured to calculate an average value of the plurality of first preliminary intake pressures to obtain the first average intake pressure. In this embodiment, the obtained plurality of first target intake pressures are all intake pressures in the new use period of air filtration, and since the first average intake pressure is obtained by calculating the average value of the plurality of first preliminary intake pressures, the first average intake pressure can objectively and accurately represent the intake pressure in the new use period of air filtration.
In an embodiment of the present application, the first obtaining module includes a first judging sub-module, a first counting sub-module, a second judging sub-module, and a first iteration sub-module, where the first judging sub-module is configured to sequentially judge whether all the target intake pressures meet the first preset condition; the first counting sub-module is configured to increment a first number by one if the target intake pressure satisfies the first preset condition; the second judging submodule is used for judging whether the first number is larger than or equal to a first preset number or not; the first iteration sub-module is configured to sequentially repeat the first determining step, the counting step, and the second determining step at least once until the first number is greater than or equal to the first predetermined number, thereby obtaining at least the first target intake pressure of the first predetermined number. In this embodiment, the obtained plurality of first target intake pressures are all target intake pressures satisfying a first preset condition, that is, the obtained plurality of first target intake pressures are all intake pressures in a new use period of air filtration, and the number of collected intake pressures in the new use period of air filtration is ensured to reach the preset number by obtaining the first preset number of first target intake pressures, so that accidental occurrence is avoided, and accuracy of judging the working state of the air filtration is improved.
In an embodiment of the present application, the second calculating unit includes a second obtaining module, a second deleting module, and a second calculating module, where the second obtaining module is configured to obtain the target intake air pressure that meets the second preset condition, so as to obtain a plurality of second target intake air pressures; the second deleting module is configured to delete a maximum value and a minimum value of the plurality of second target intake pressures to obtain a plurality of second preliminary intake pressures; the second calculation module is configured to calculate an average value of a plurality of second preliminary intake pressures to obtain the second average intake pressure. In this embodiment, the plurality of second target intake pressures obtained are all intake pressures for which air filtration is used for a long time, and since the second average intake pressure is obtained by calculating the average value of the plurality of second preliminary intake pressures, the second average intake pressure can objectively and accurately represent the intake pressure for which air filtration is used for a long time.
In an embodiment of the present application, the second obtaining module includes a third judging sub-module, a second counting sub-module, a fourth judging sub-module, and a second iteration sub-module, where the third judging sub-module is configured to sequentially judge whether all the target intake air pressures meet the second preset condition; the second counting sub-module is configured to increment a second number by one when the target intake pressure meets the second preset condition; the fourth judging submodule is used for judging whether the second number is larger than or equal to a second preset number or not; the second iteration sub-module is configured to sequentially repeat the third determining step, the second counting step, and the fourth determining step at least once until the second number is greater than or equal to the second predetermined number, thereby obtaining at least the second target intake pressure of the second predetermined number. In this embodiment, the obtained plurality of second target intake pressures are all target intake pressures that meet the second preset condition, that is, the obtained plurality of second target intake pressures are all intake pressures for a longer time for air filtration, and the acquired number of intake pressures for a longer time for air filtration is guaranteed to reach the preset number by acquiring the second target intake pressures for a second preset number, so that accidents are avoided, and accuracy of judging the working state of the air filtration is improved.
In an embodiment of the present application, the standard working condition is a working condition that the engine simultaneously satisfies a first working condition, a second working condition and a third working condition, the first working condition is that a rotational speed of the engine is greater than a predetermined rotational speed, the second working condition is that a difference between a torque at a current time point and a torque at a historical time point is within a first predetermined range, the third working condition is that a difference between an intake air flow at the current time point and an intake air flow at the historical time point is within a second predetermined range, and the historical time point and the current time point are separated by a predetermined time. In the embodiment, the engine meets the working conditions of the first working condition, the second working condition and the third working condition simultaneously, the engine and the air filter are guaranteed to be in normal and stable running states, the accuracy of measuring the air inlet pressure of each target is further guaranteed, and the accuracy of judging the working state of the air filter is further improved.
The rotational speed of the engine, the difference between the torque at the current time point and the torque at the history time point, and the difference between the intake air flow rate at the current time point and the intake air flow rate at the history time point are all measured by the bench.
The device for determining the working state of the air filter comprises a processor and a memory, wherein the acquisition unit, the first calculation unit, the second calculation unit, the determination unit and the like are all stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one kernel, and the problem that the working state of the air filter cannot be judged automatically in the prior art is solved by adjusting the kernel parameters.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the invention provides a computer readable storage medium, on which a program is stored, which when executed by a processor, implements the method for determining the working state of air filtering.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program runs to execute the method for determining the working state of the air filter.
An embodiment of the present invention provides a vehicle including an engine, one or more processors, and a memory, the engine including an air filter, 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 executing any one of the above, the processor implementing at least the following steps when executing the programs:
step S101, under the condition that the engine is in a standard working condition, acquiring air-filtered air inlet pressures of a plurality of time nodes to obtain a plurality of target air inlet pressures;
step S102, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage;
step S103, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time, and the running mileage of the engine is longer than the preset mileage;
Step S104, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure.
The device herein may be a server, PC, PAD, cell phone, etc.
The present application also provides a computer program product adapted to perform a program initialized with at least the following method steps when executed on a data processing device:
step S101, under the condition that the engine is in a standard working condition, acquiring air-filtered air inlet pressures of a plurality of time nodes to obtain a plurality of target air inlet pressures;
step S102, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage;
step S103, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time, and the running mileage of the engine is longer than the preset mileage;
Step S104, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a computer readable storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned methods of the various embodiments of the present invention. And the aforementioned computer-readable storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) In the method for determining the working state of the air filter, firstly, under the condition that the engine is in a standard working condition, air inlet pressures of the air filter of a plurality of time nodes are obtained, and a plurality of target air inlet pressures are obtained; then, calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first average air inlet pressure is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to a preset time, and the running mileage of the engine is smaller than or equal to a preset mileage; then, calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein the second preset condition is that when the second preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and finally, determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure. According to the method, by collecting the air inlet pressure of the air filter in a new use period and the air inlet pressure of the air filter in a longer time, as the air inlet pressure is lower when the air filter needs maintenance, whether the working state of the air filter is abnormal can be determined by comparing the air inlet pressure with the air inlet pressure of the air filter in the new use period and the air inlet pressure of the air filter in the longer time, so that whether the air filter needs maintenance or not is determined, and the problem that the working state of the air filter cannot be automatically judged in the prior art is solved.
2) In the determining device of the working state of the air filter, an obtaining unit obtains air inlet pressures of the air filter of a plurality of time nodes under the standard working condition of the engine to obtain a plurality of target air inlet pressures; the first calculation unit is used for calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to preset time, and the running mileage of the engine is smaller than or equal to preset mileage; the second calculation unit calculates an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein the second preset condition is that when the second preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time and the running mileage of the engine is longer than the preset mileage; and a determining unit configured to determine whether or not an operation state of the air filter is abnormal based on the first average intake pressure and the second average intake pressure. The device is through gathering the air inlet pressure that the new use period of air filter and use the air inlet pressure of longer time, because air filter the air inlet pressure when needing maintenance is lower, compares the average between them, can confirm whether the operating condition of air filter is unusual to confirm whether air filter needs maintenance, solved the unusual problem of the operating condition of unable automatic judgement air filter among the prior art.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (9)
1. A method of determining an operating condition of an air filter, wherein an engine includes the air filter, the method comprising:
acquiring air filtered air inlet pressure of a plurality of time nodes when the engine is in a standard working condition, and obtaining a plurality of target air inlet pressures; the standard working condition is a working condition that the engine simultaneously meets a first working condition, a second working condition and a third working condition, the first working condition is that the rotating speed of the engine is larger than a preset rotating speed, the second working condition is that the difference value between the torque at the current time point and the torque at the historical time point is in a first preset range, the third working condition is that the difference value between the air inlet flow at the current time point and the air inlet flow at the historical time point is in a second preset range, and the historical time point and the current time point are separated by preset time;
Calculating an average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is less than or equal to preset time, and the running mileage of the engine is less than or equal to preset mileage;
calculating an average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is that the second average air inlet pressure is at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than preset time, and the running mileage of the engine is longer than preset mileage;
determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure;
determining whether the working state of the air filter is abnormal according to the first average air inlet pressure and the second average air inlet pressure comprises the following steps: determining that the working state of the air filter is abnormal and sending prompt information of maintenance under the condition that a third preset condition and/or a fourth preset condition are met, wherein the third preset condition is that the difference value between the first average air inlet pressure and the second average air inlet pressure is larger than a first preset value, and the fourth preset condition is that the second average air inlet pressure is smaller than a second preset value; and under the condition that the third preset condition and the fourth preset condition are not met, determining that the working state of the air filter is normal and sending prompt information without maintenance.
2. The method of claim 1, wherein calculating an average of the target intake pressures that meet a first preset condition to obtain a first average intake pressure comprises:
acquiring the target air inlet pressure meeting the first preset condition to obtain a plurality of first target air inlet pressures;
deleting the maximum value and the minimum value of the first target air inlet pressure to obtain a plurality of first preparation air inlet pressures;
and calculating the average value of a plurality of first preparation air inlet pressures to obtain the first average air inlet pressure.
3. The method according to claim 2, wherein obtaining the target intake air pressure that satisfies the first preset condition, to obtain a plurality of first target intake air pressures, includes:
a first judging step of sequentially judging whether all the target intake pressures meet the first preset condition;
a first counting step of adding one to a first number in the case where the target intake air pressure satisfies the first preset condition;
a second judging step of judging whether the first number is greater than or equal to a first predetermined number;
and a first repeating step of sequentially repeating the first judging step, the first counting step and the second judging step at least once until the first number is greater than or equal to the first predetermined number, thereby obtaining at least the first target intake pressure of the first predetermined number.
4. The method according to claim 1, wherein calculating an average value of the target intake air pressure satisfying a second preset condition to obtain a second average intake air pressure includes:
acquiring the target air inlet pressure meeting the second preset condition to obtain a plurality of second target air inlet pressures;
deleting the maximum value and the minimum value in the second target air inlet pressures to obtain a plurality of second preparation air inlet pressures;
and calculating the average value of a plurality of second preparation air inlet pressures to obtain the second average air inlet pressure.
5. The method of claim 4, wherein obtaining the target intake air pressure that satisfies the second preset condition results in a plurality of second target intake air pressures, comprising:
a third judging step of sequentially judging whether all the target intake pressures meet the second preset condition;
a second counting step of adding one to a second number in the case where the target intake air pressure satisfies the second preset condition;
a fourth judging step of judging whether the second number is greater than or equal to a second predetermined number;
and a second repeating step of sequentially repeating the third judging step, the second counting step, and the fourth judging step at least once until the second number is greater than or equal to the second predetermined number, to obtain at least the second target intake pressure of the second predetermined number.
6. A device for determining an operating condition of an air filter, wherein an engine includes the air filter, the device comprising:
the acquisition unit is used for acquiring air-filtered air inlet pressure of a plurality of time nodes when the engine is in a standard working condition to obtain a plurality of target air inlet pressures; the standard working condition is a working condition that the engine simultaneously meets a first working condition, a second working condition and a third working condition, the first working condition is that the rotating speed of the engine is larger than a preset rotating speed, the second working condition is that the difference value between the torque at the current time point and the torque at the historical time point is in a first preset range, the third working condition is that the difference value between the air inlet flow at the current time point and the air inlet flow at the historical time point is in a second preset range, and the historical time point and the current time point are separated by preset time;
the first calculation unit is used for calculating the average value of the target air inlet pressure meeting a first preset condition to obtain a first average air inlet pressure, wherein when the first preset condition is that the first preset condition is at a time node corresponding to the target air inlet pressure, the running time of the engine is smaller than or equal to preset time, and the running mileage of the engine is smaller than or equal to preset mileage;
The second calculation unit is used for calculating the average value of the target air inlet pressure meeting a second preset condition to obtain a second average air inlet pressure, wherein when the second preset condition is that the second average air inlet pressure is positioned at a time node corresponding to the target air inlet pressure, the running time of the engine is longer than the preset time, and the running mileage of the engine is longer than the preset mileage;
a determining unit configured to determine whether an operation state of the air filter is abnormal according to the first average intake pressure and the second average intake pressure;
the determining unit comprises a first determining module and a second determining module, wherein the first determining module is used for determining that the working state of the air filter is abnormal and sending prompt information of maintenance under the condition that a third preset condition and/or a fourth preset condition are met, the third preset condition is that the difference value between the first average air inlet pressure and the second average air inlet pressure is larger than a first preset value, and the fourth preset condition is that the second average air inlet pressure is smaller than a second preset value; the second determining module is configured to determine that the working state of the air filter is normal and send prompt information that no maintenance is required, where the third preset condition and the fourth preset condition are not satisfied.
7. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the stored program performs the method of any one of claims 1 to 5.
8. A processor for running a program, wherein the program when run performs the method of any one of claims 1 to 5.
9. A vehicle comprising an engine, one or more processors, a memory, the engine comprising an air filter, wherein 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 instructions for performing the method of any of claims 1-5.
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| US10288019B2 (en) * | 2016-07-21 | 2019-05-14 | Ford Global Technologies, Llc | Secondary system and method for controlling an engine |
| US10487767B2 (en) * | 2017-03-17 | 2019-11-26 | Ford Global Technologies, Llc | Method and system for monitoring air filter condition |
| CN108506125A (en) * | 2018-03-22 | 2018-09-07 | 潍柴动力股份有限公司 | A kind of monitoring method of air filter state, apparatus and system |
| CN112065617B (en) * | 2020-09-08 | 2021-04-09 | 上海星融汽车科技有限公司 | Air filter state detection method and system and vehicle |
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| CN109083756A (en) * | 2018-09-28 | 2018-12-25 | 潍柴动力股份有限公司 | A kind of engine charge fault detection method and device |
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