CN114673614A - 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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- CN114673614A CN114673614A CN202210283471.2A CN202210283471A CN114673614A CN 114673614 A CN114673614 A CN 114673614A CN 202210283471 A CN202210283471 A CN 202210283471A CN 114673614 A CN114673614 A CN 114673614A
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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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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Filtering Of Dispersed Particles In Gases (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 filter inlet pressures of a plurality of time nodes to obtain a plurality of target inlet pressures; calculating an average value of target intake pressures meeting a first preset condition to obtain a first average intake pressure, wherein the first preset condition is that 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; calculating the average value of the target intake pressure meeting a second preset condition to obtain a second average intake 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 or not according to the first average intake pressure and the second average intake pressure. The method solves the problem that the abnormity of the working state of the air filter cannot be automatically judged in the prior art.
Description
Technical Field
The application relates to the technical field of engines, in particular to a method and a device for determining the working state of an air filter, a computer-readable storage medium, a processor and a vehicle.
Background
The engine needs clean air during operation, the air filter is an important part for ensuring the air cleanliness, particularly, the importance of the air filter is improved again in six stages of China, and if the air filter cannot be maintained or replaced in time, the air filter can block the post-treatment to a certain extent besides abnormal mechanical abrasion of the engine, and the engine is abnormally shut down and the post-treatment is burnt down in serious cases.
At present, the air filter maintenance is performed on a part of middle and high-end vehicle types, and an alarm indicator is mainly arranged on the air filter to inform a user when the air filter is maintained. More generally, a user performs a certain degree of judgment through experience, which is likely to cause untimely maintenance, wear of the engine and post-treatment blockage.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The main objective of the present application is to provide a method and a device for determining an operating state of an air filter, a computer-readable storage medium, a processor, and a vehicle, so as to solve the problem that an abnormality of the operating state of the air filter cannot be automatically determined in the prior art.
According to an aspect of the embodiment of the invention, a method for determining the working state of an air filter is provided, an engine comprises the air filter, and the method comprises the following steps: acquiring the air filter 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; calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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; calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is that the time node corresponding to the target intake pressure is located, 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 determining whether the working state of the air filter is abnormal or not 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 intake pressure and the second average intake pressure includes: determining that the working state of the air filter is abnormal and sending a prompt message for maintenance under the condition that a third preset condition and/or a fourth preset condition are/is 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 pressures satisfying a first preset condition to obtain a first average intake pressure, includes: acquiring the target intake pressure meeting the first preset condition to obtain a plurality of first target intake 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 the plurality of first preparation air inlet pressures to obtain the first average air inlet pressure.
Optionally, obtaining the target intake pressure meeting the first preset condition to obtain a plurality of first target intake pressures includes: a first judgment 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 a case where the target intake air pressure satisfies the first preset condition; a second judgment step of judging whether the first number is greater than or equal to a first predetermined number; a first repeating step of repeating the first determining step, the counting step, and the second determining step until the first number is greater than or equal to the first predetermined number, resulting in at least the first predetermined number of the first target intake pressure.
Optionally, calculating an average value of the target intake pressures satisfying a second preset condition to obtain a second average intake 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 intake pressures to obtain second prepared intake pressures; and calculating an average value of a plurality of second preparation air inlet pressures to obtain the second average air inlet pressure.
Optionally, obtaining the target intake pressure that meets the second preset condition to obtain a plurality of second target intake pressures includes: a third judgment 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 judgment step of judging whether the second number is greater than or equal to a second predetermined number; a second repeating step of repeating the third determination step, the second counting step, and the fourth determination step until the second number is greater than or equal to the second predetermined number, resulting in at least the second predetermined number of the second target intake pressure.
Optionally, the standard operating condition is an operating condition that the engine simultaneously satisfies a first operating condition, a second operating condition and a third operating condition, the first operating condition is that the rotating speed of the engine is greater than a preset rotating speed, the second operating condition is that the difference between the torque at the current time point and the torque at the historical time point is within a first preset range, the third operating condition is that the difference between the intake air flow at the current time point and the intake air flow at the historical time point is within 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 embodiments of the present invention, there is also provided an apparatus for determining an operating state of an air filter, where an engine includes the air filter, the apparatus including: the acquiring unit is used for acquiring the air filter air inlet pressure of a plurality of time nodes under the standard condition of the engine to obtain a plurality of target air inlet pressures; the first calculation unit is used for calculating the average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, and when the first preset condition is a time node corresponding to the target intake 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; the second calculation unit is used for calculating the average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, and when the second preset condition is a time node corresponding to the target intake 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 the determining unit is used for determining whether the working state of the air filter is abnormal or not 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 executes any one of the methods.
According to still another aspect of the embodiments of the present invention, there is further provided a processor, configured to execute a program, where the program executes any one of the methods.
There is also provided, in accordance with an aspect of an embodiment of the present invention, a vehicle including an engine including an air filter, one or more processors, memory, 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 embodiment of the present invention, in the method for determining the working state of the air filter, first, when the engine is in a standard working condition, the intake pressure of the air filter at a plurality of time nodes is obtained to obtain a plurality of target intake pressures; then, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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; then, calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is a time node corresponding to the target intake 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 finally, determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure. According to the method, the air inlet pressure of the air filter in a new use period and the air inlet pressure of the air filter in a long use time are collected, and the air inlet pressure is lower when the air filter needs maintenance, and the average value of the air inlet pressure and the air inlet pressure is compared, so that whether the working state of the air filter is abnormal or not can be determined, whether the air filter needs maintenance or not is determined, and the problem that the abnormal working state of the air filter cannot be automatically judged in the prior art is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments and illustrations of the application are intended to explain the application and are not intended to limit the application. In the drawings:
fig. 1 shows a flow chart of a method of determining an operational status of an air filter according to an embodiment of the application;
FIG. 2 illustrates a flow chart of a method of determining an operational status of an air filter according to another particular embodiment of the present application;
fig. 3 shows a schematic diagram of an apparatus for determining an 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 exemplary and is intended to provide further explanation of the disclosure. 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 according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
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. Also, in the specification and 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, some terms or expressions referred to in the embodiments of the present application are explained below:
air filtering: an air cleaner has a replaceable filter element therein. If the filter element is accumulated with dust to a certain degree, the ash removal operation is needed, and the filter element needs to be replaced after a plurality of times.
Air filtration differential pressure sensor: the air filter is separately 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 rotating speed, torque, fuel injection quantity, emission and the like.
As mentioned in the background art, the prior art cannot automatically determine the abnormality of the operating state of the air filter, and in order to solve the above problems, in an exemplary embodiment of the present application, a method for determining the operating state of the air filter, a determining device, a computer-readable storage medium, a processor, and a vehicle are provided.
According to an embodiment of the application, a method for determining the working state of the air filter is provided.
Fig. 1 is a flowchart of a method for determining an operating state of an air filter according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, acquiring air inlet pressures of the air filter at a plurality of time nodes under a standard working condition of the engine to obtain a plurality of target air inlet pressures;
step S102, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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;
step S103, calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is a time node corresponding to the target intake 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 step S104, determining whether the working state of the air filter is abnormal or not 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, the air filter inlet pressure of a plurality of time nodes is obtained when the engine is in a standard working condition, and a plurality of target inlet pressures are obtained; then, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is that the time node corresponding to the target intake pressure is located, 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; then, calculating an average value of the target intake pressures meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is that the time node corresponding to the target intake pressure is located, 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 finally, determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure. According to the method, the air inlet pressure of the air filter in a new using period and the air inlet pressure of the air filter in a long time are collected, and the air inlet pressure is lower when the air filter needs to be maintained, so that whether the working state of the air filter is abnormal or not can be determined by comparing the average values of the air inlet pressure and the air inlet pressure, whether the air filter needs to be maintained or not is determined, and the problem that the abnormal working state of the air filter cannot be automatically judged in the prior art is solved.
It should be noted that the 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 different than here.
In an embodiment of the present application, determining whether the working state of the air filter is abnormal according to the first average intake air pressure and the second average intake air pressure includes: determining that the working state of the air filter is abnormal and sending a prompt message for maintenance under the condition that a third preset condition and/or a fourth preset condition are/is 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 a prompt message without maintenance. In this embodiment, as shown in fig. 2, when a third preset condition and/or a fourth preset condition is satisfied, that is, when a difference between an average value of the intake pressures in the N air filters in the new use period and an average value of the intake pressures in the M air filters in the long use period reaches a preset difference value at which the operating state of the air filters is determined to be abnormal and/or when an average value of the intake pressures in the M air filters in the long use period reaches a preset intake pressure value at which the operating state of the air filters is determined to be abnormal, the operating state of the air filters is determined to be abnormal and a maintenance prompt message is sent, when neither the third preset condition nor the fourth preset condition is satisfied, that is, when a difference between an average value of the intake pressures in the N air filters in the new use period and an average value of the intake pressures in the M air filters in the long use period reaches a preset difference value at which the operating state of the air filters is determined to be abnormal and an average value of the intake pressures in the M air filters in the long use period does not reach a preset difference value at which the operating state of the long use period is determined to be abnormal And under the condition that the preset pressure value of the abnormal working state of the air filter is determined, determining that the working state of the air filter is normal and sending prompt information without maintenance.
It should be noted that, in the present application, the prompt information of the maintenance and the prompt information of the maintenance which does not need to be performed are displayed through the meter, so as to avoid delay, and the maintenance of the air filter may be excessive but not delayed.
In an embodiment of the application, calculating an average value of the target intake pressures satisfying a first preset condition to obtain a first average intake pressure includes: acquiring the target intake pressure meeting the first preset condition to obtain a plurality of first target intake pressures; deleting the maximum value and the minimum value of the first target intake pressures to obtain a plurality of first preparatory intake pressures; and calculating an average value of a plurality of first preparatory intake pressures to obtain the first average intake pressure. In this embodiment, the plurality of first target intake pressures obtained are intake pressures during the new use period of the air filter, and since the first average intake pressure is obtained by calculating an average value of the plurality of first preliminary intake pressures, the first average intake pressure can objectively and accurately represent the intake pressure during the new use period of the air filter.
In an embodiment of the application, acquiring the target intake pressure that satisfies the first preset condition to obtain a plurality of first target intake pressures includes: a first judgment step of sequentially judging whether all the target intake pressures satisfy the first preset condition; a first counting step of adding one to a first number in a case where the target intake air pressure satisfies the first preset condition; a second judgment step of judging whether the first number is greater than or equal to a first predetermined number; a first repeating step of repeating the first determining step, the counting step, and the second determining step at least once in this order 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 pressure. In this embodiment, the obtained first target intake pressures are all target intake pressures that satisfy a first preset condition, that is, the obtained first target intake pressures are all intake pressures during the new use period of the air filter, and the acquired intake pressures during the new use period of the air filter are guaranteed to reach a preset number by acquiring the first target intake pressures of a first preset number, so as to avoid contingency and improve the accuracy of the judgment of the working state of the air filter.
In an embodiment of the application, calculating an average value of the target intake pressures satisfying a second preset condition to obtain a second average intake pressure includes: acquiring the target intake pressure meeting the second preset condition to obtain a plurality of second target intake pressures; deleting the maximum value and the minimum value in the second target intake pressures to obtain second preparatory intake pressures; and calculating an average value of a plurality of second preliminary intake pressures to obtain the second average intake pressure. In this embodiment, the obtained second target intake pressures are all intake pressures for a long time of the air filter, and since the second average intake pressure is obtained by calculating an average value of the second preliminary intake pressures, the second average intake pressure can objectively and accurately represent the intake pressure for the long time of the air filter.
In an embodiment of the application, obtaining the target intake pressure that satisfies the second preset condition to obtain a plurality of second target intake pressures includes: a third judgment step of sequentially judging whether all the target intake pressures satisfy the second preset condition; a second counting step of adding one to a second number in a case where the target intake air 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; a second repeating step of repeating the third determining step, the second counting step, and the fourth determining step at least once in this order until the second number is greater than or equal to the second predetermined number, to obtain at least the second predetermined number of the second target intake pressure. In this embodiment, the obtained second target intake pressures are the target intake pressures that satisfy the second preset condition, that is, the obtained second target intake pressures are the intake pressures for the air filter that is used for a long time, and the number of the intake pressures for the air filter that are used for a long time, which are collected by obtaining the second target intake pressures of the second preset number, is ensured to reach the preset number, so as to avoid the contingency and improve the accuracy of the working state judgment of the air filter.
In an embodiment of the application, the standard operating condition is an operating condition where the engine simultaneously satisfies a first operating condition, a second operating condition, and a third operating condition, the first operating condition is that a rotation speed of the engine is greater than a predetermined rotation speed, the second operating 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 operating 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 simultaneously meets the working conditions of the first working condition, the second working condition and the third working condition, and the engine and the air filter are both in a normal and stable running state, so that the accuracy of measuring the intake pressure of each target is ensured, and the accuracy of judging the working state of the air filter is improved.
The rotation speed of the engine, the difference between the torque at the current time point and the torque at the historical time point, and the difference between the intake air flow rate at the current time point and the intake air flow rate at the historical time point are measured by the gantry.
The embodiment of the present application further provides a device for determining an operating state of an air filter, and it should be noted that the device for determining an operating state of an air filter according to the embodiment of the present application may be used to execute the method for determining an operating state of an air filter according to the embodiment of the present application. The following describes an apparatus for determining an operating state of an air filter according to an embodiment of the present application.
Fig. 3 is a schematic diagram of an apparatus for determining an operating state of an air filter according to an embodiment of the present application. As shown in fig. 3, the apparatus includes:
an acquisition unit 10 that acquires intake pressures of the air filter at a plurality of time nodes under a standard condition of the engine to obtain a plurality of target intake pressures;
a first calculating unit 20, configured to calculate an average value of the target intake pressures meeting a first preset condition to obtain a first average intake pressure, where when the first preset condition is a time node corresponding to the target intake pressure, an operation time of the engine is less than or equal to a preset time, and an operation mileage of the engine is less than or equal to a preset mileage;
a second calculating unit 30, configured to calculate an average value of the target intake pressures meeting a second preset condition, so as to obtain a second average intake pressure, where when the second preset condition is a time node corresponding to the target intake pressure, the operation time of the engine is greater than a preset time, and the operation mileage of the engine is greater than a preset mileage;
And a determining unit 40 for determining whether the working state of the air filter is abnormal according to 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 the air inlet pressure of the air filter at a plurality of time nodes when the engine is in a standard working condition to obtain a plurality of target air inlet pressures; the first calculation unit is used for calculating the average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, and when the first preset condition is a time node corresponding to the target intake 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; the second calculation unit is used for calculating the average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, and when the second preset condition is a time node corresponding to the target intake 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 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. The device is through gathering the pressure of admitting air of empty new service life of straining and using the pressure of admitting air of long time, because the pressure of admitting air is lower when empty needs the maintenance, compares average value between them, can confirm whether empty operating condition who strains is unusual to confirm empty the maintenance that strains and whether need, solved among the prior art unable automatic judgement empty abnormal problem of operating condition who strains.
It should be noted that the intake pressure of the air filter is measured by the air filter pressure difference sensor.
In an embodiment of the 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 message for maintenance when a third preset condition and/or a fourth preset condition is met, where the third preset condition is that a difference between the first average intake air pressure and the second average intake air pressure is greater than a first predetermined value, and the fourth preset condition is that the second average intake air pressure is smaller 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 a prompt message that maintenance is not required when the third preset condition and the fourth preset condition are not satisfied. In this embodiment, as shown in fig. 2, when a third preset condition and/or a fourth preset condition is satisfied, that is, when a difference between an average value of the intake pressures in the N air filters in the new use period and an average value of the intake pressures in the M air filters in the long use period reaches a preset difference value at which the operating state of the air filters is determined to be abnormal and/or when an average value of the intake pressures in the M air filters in the long use period reaches a preset intake pressure value at which the operating state of the air filters is determined to be abnormal, the operating state of the air filters is determined to be abnormal and a maintenance prompt message is sent, when neither the third preset condition nor the fourth preset condition is satisfied, that is, when a difference between an average value of the intake pressures in the N air filters in the new use period and an average value of the intake pressures in the M air filters in the long use period reaches a preset difference value at which the operating state of the air filters is determined to be abnormal and an average value of the intake pressures in the M air filters in the long use period does not reach a preset difference value at which the operating state of the long use period is determined to be abnormal And under the condition that the preset pressure value of the abnormal working state of the air filter is determined, determining that the working state of the air filter is normal and sending prompt information without maintenance.
It should be noted that, in the present application, the prompt information of the maintenance and the prompt information of the maintenance which does not need to be performed are displayed through the meter, so as to avoid delay, and the maintenance of the air filter may be excessive but not delayed.
In an embodiment of the 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 pressures that satisfy the first preset condition, and obtain a plurality of first target intake pressures; the first deleting module is used for deleting the maximum value and the minimum value of the first target air inlet pressures to obtain a plurality of first prepared air inlet pressures; the first calculating module is configured to calculate an average value of a 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 during the new use period of the air filter, and the first average intake pressure is obtained by calculating an average value of the plurality of first preliminary intake pressures, so that the first average intake pressure can objectively and accurately represent the intake pressure during the new use period of the air filter.
In an embodiment of the application, the first obtaining module includes a first determining submodule, a first counting submodule, a second determining submodule and a first iteration submodule, and the first determining submodule is configured to sequentially determine whether all the target intake pressures meet the first preset condition; the first counting submodule is used for adding one to a first number under the condition that the target intake pressure meets the first preset condition; the second judging submodule is used for judging whether the first quantity is greater than or equal to a first preset quantity or not; the first iteration sub-module is configured to repeat the first determining step, the counting step, and the second determining step at least once in sequence until the first number is greater than or equal to the first predetermined number, so as to obtain at least the first target intake pressure of the first predetermined number. In this embodiment, the obtained first target intake pressures are all target intake pressures that satisfy a first preset condition, that is, the obtained first target intake pressures are all intake pressures during the new use period of the air filter, and the acquired intake pressures during the new use period of the air filter are guaranteed to reach a preset number by acquiring the first target intake pressures of a first preset number, so as to avoid contingency and improve the accuracy of the judgment of the working state of the air filter.
In an embodiment of the application, the second calculating unit includes a second obtaining module, a second deleting module and a second calculating module, and the second obtaining module is configured to obtain the target intake pressures that satisfy the second preset condition, so as to obtain a plurality of second target intake 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 obtained second target intake pressures are all intake pressures for a long time of the air filter, and since the second average intake pressure is obtained by calculating an average value of the second preliminary intake pressures, the second average intake pressure can objectively and accurately represent the intake pressure for the long time of the air filter.
In an embodiment of the application, the second obtaining module includes a third determining submodule, a second counting submodule, a fourth determining submodule, and a second iterating submodule, and the third determining submodule is configured to sequentially determine whether all the target intake pressures satisfy the second preset condition; the second counting submodule is used for adding one to a second number under the condition that the target intake pressure meets the second preset condition; the fourth judging submodule is used for judging whether the second quantity is greater than or equal to a second preset quantity; the second iteration submodule is configured to repeat the third determining step, the second counting step, and the fourth determining step at least once in sequence until the second number is greater than or equal to the second predetermined number, so as to obtain at least the second predetermined number of the second target intake pressures. In this embodiment, the obtained second target intake pressures are the target intake pressures that satisfy the second preset condition, that is, the obtained second target intake pressures are the intake pressures for the air filter that is used for a long time, and the number of the intake pressures for the air filter that are used for a long time, which are collected by obtaining the second target intake pressures of the second preset number, is ensured to reach the preset number, so as to avoid the contingency and improve the accuracy of the working state judgment of the air filter.
In an embodiment of the application, the standard operating condition is an operating condition that the engine simultaneously satisfies a first operating condition, a second operating condition and a third operating condition, the first operating condition is that a rotation speed of the engine is greater than a predetermined rotation speed, the second operating 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 operating 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 simultaneously meets the working conditions of the first working condition, the second working condition and the third working condition, and the engine and the air filter are ensured to be in normal and stable running states, so that the accuracy of measuring the intake pressure of each target is ensured, and the accuracy of judging the working state of the air filter is improved.
The rotation speed of the engine, the difference between the torque at the current time point and the torque at the historical time point, and the difference between the intake air flow rate at the current time point and the intake air flow rate at the historical time point are measured by the gantry.
The determination device for 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 stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that the abnormal working state of the air filter cannot be automatically judged in the prior art is solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium, on which a program is stored, where the program, when executed by a processor, implements the method for determining the working state of the air filter.
The embodiment of the invention provides a processor, which is used for running a program, wherein the method for determining the working state of the air filter is executed when the program runs.
Embodiments of the present invention provide a vehicle, including an engine, one or more processors, and a memory, where the engine includes an air filter, where the one or more programs are stored in the memory and configured to be executed by the one or more processors, where the one or more programs include instructions for performing any one of the above methods, and the processors implement at least the following steps when executing the programs:
step S101, acquiring air filter inlet pressures of a plurality of time nodes under the standard working condition of the engine to obtain a plurality of target inlet pressures;
step S102, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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;
step S103, calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is a time node corresponding to the target intake 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 step S104, determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, acquiring air filter inlet pressures of a plurality of time nodes under the standard working condition of the engine to obtain a plurality of target inlet pressures;
step S102, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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;
step S103, calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is a time node corresponding to the target intake 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 step S104, determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned computer-readable storage media comprise: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) according to the method for determining the working state of the air filter, firstly, under the standard working condition of the engine, the air inlet pressure of the air filter at a plurality of time nodes is obtained, and a plurality of target air inlet pressures are obtained; then, calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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; then, calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is a time node corresponding to the target intake 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 finally, determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure. According to the method, the air inlet pressure of the air filter in a new use period and the air inlet pressure of the air filter in a long use time are collected, and the air inlet pressure is lower when the air filter needs maintenance, and the average value of the air inlet pressure and the air inlet pressure is compared, so that whether the working state of the air filter is abnormal or not can be determined, whether the air filter needs maintenance or not is determined, and the problem that the abnormal working state of the air filter cannot be automatically judged in the prior art is solved.
2) The device for determining the working state of the air filter comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the air inlet pressure of the air filter at 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 the average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, and when the first preset condition is a time node corresponding to the target intake 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; the second calculation unit is used for calculating the average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, and when the second preset condition is a time node corresponding to the target intake 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 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. The device is through gathering the pressure of admitting air of empty new service life of straining and using the pressure of admitting air of long time, because the pressure of admitting air is lower when empty needs the maintenance, compares average value between them, can confirm whether empty operating condition who strains is unusual to confirm empty the maintenance that strains and whether need, solved among the prior art unable automatic judgement empty abnormal problem of operating condition who strains.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A method of determining an operating condition of an air filter, wherein an engine includes the air filter, the method comprising:
acquiring the air filter 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;
calculating an average value of the target intake pressure meeting a first preset condition to obtain a first average intake pressure, wherein when the first preset condition is a time node corresponding to the target intake 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;
calculating an average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, wherein when the second preset condition is that the time node corresponding to the target intake pressure is located, 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 determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure.
2. The method of claim 1, wherein determining whether the operating condition of the air filter is abnormal based on the first average intake pressure and the second average intake pressure comprises:
determining that the working state of the air filter is abnormal and sending a prompt message for maintenance under the condition that a third preset condition and/or a fourth preset condition are/is 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.
3. The method of claim 1, wherein calculating an average of the target intake air pressures satisfying a first preset condition, resulting in a first average intake air pressure, comprises:
acquiring the target intake pressure meeting the first preset condition to obtain a plurality of first target intake pressures;
Deleting the maximum value and the minimum value of the first target intake pressures to obtain a plurality of first preparation intake pressures; and calculating an average value of a plurality of first preparation air inlet pressures to obtain the first average air inlet pressure.
4. The method of claim 3, wherein obtaining the target intake pressure that satisfies the first preset condition, resulting in a plurality of first target intake pressures, comprises:
a first judgment 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 a case where the target intake air pressure satisfies the first preset condition;
a second judgment step of judging whether the first number is greater than or equal to a first predetermined number;
a first repeating step of repeating the first determining step, the counting step, and the second determining step at least once in this order until the first number is greater than or equal to the first predetermined number, resulting in at least the first predetermined number of the first target intake pressure.
5. The method of claim 1, wherein calculating an average of the target intake air pressures that satisfy a second preset condition, resulting in a second average intake air pressure, comprises:
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 intake pressures to obtain second prepared intake pressures; and calculating an average value of a plurality of second preparation air inlet pressures to obtain the second average air inlet pressure.
6. The method according to claim 5, wherein the obtaining of the target intake air pressure satisfying the second preset condition, obtaining a plurality of second target intake air pressures, comprises:
a third judgment 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 judgment 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 determining step, the second counting step, and the fourth determining step at least once in sequence until the second number is greater than or equal to the second predetermined number, so as to obtain at least the second target intake pressure of the second predetermined number.
7. The method of claim 1, wherein the standard operating condition is an operating condition in which the engine simultaneously satisfies a first operating condition, a second operating condition, and a third operating condition, the first operating condition being that a rotational speed of the engine is greater than a predetermined rotational speed, the second operating condition being 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 operating condition being 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, the historical time point being separated from the current time point by a predetermined time.
8. An apparatus for determining the operating condition of an air filter, wherein an engine includes the air filter, the apparatus comprising:
the acquiring unit is used for acquiring the air filter air inlet pressure of a plurality of time nodes under the standard 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 intake pressure meeting a first preset condition to obtain a first average intake pressure, and when the first preset condition is that the time node corresponding to the target intake pressure is located, 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;
The second calculation unit is used for calculating the average value of the target intake pressure meeting a second preset condition to obtain a second average intake pressure, and when the second preset condition is that the time node corresponding to the target intake pressure is located, 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 the determining unit is used for determining whether the working state of the air filter is abnormal or not according to the first average air inlet pressure and the second average air inlet pressure.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 7.
11. A vehicle comprising an engine, one or more processors, a memory, the engine comprising 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 comprising instructions for performing the method of any of claims 1-7.
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