CN113175382B - Air leakage diagnosis method, device and equipment for engine air inlet pipeline - Google Patents
Air leakage diagnosis method, device and equipment for engine air inlet pipeline Download PDFInfo
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- CN113175382B CN113175382B CN202110627035.8A CN202110627035A CN113175382B CN 113175382 B CN113175382 B CN 113175382B CN 202110627035 A CN202110627035 A CN 202110627035A CN 113175382 B CN113175382 B CN 113175382B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
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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
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
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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
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
Abstract
The application discloses a gas leakage diagnosis method, a gas leakage diagnosis device and gas leakage diagnosis equipment for an engine gas inlet pipeline, wherein parameter items collected by a sensor preset in the gas inlet pipeline are obtained, the gas inlet pipeline comprises a high-pressure pipeline and a low-pressure pipeline, the sensor is arranged at the gas outlet end of an air filter, and the parameter items indicate the gas inlet flow of air flowing through the air filter. When the engine is detected to be in an idling state and the value of the air inflow is larger than a first preset threshold value, the air leakage of the high-pressure pipeline of a user is prompted. When the engine is detected to be in an idling state and the value of the intake air flow is smaller than a second preset threshold value, the air leakage of the low-pressure pipeline is prompted to a user, and the second preset threshold value is smaller than the first preset threshold value. By means of the scheme, the air leakage diagnosis accuracy of the air inlet pipeline of the engine can be effectively improved, the air leakage diagnosis method can be suitable for engines of different types produced by different manufacturers, and the air leakage diagnosis method has strong applicability.
Description
Technical Field
The application relates to the field of engine detection, in particular to a method, a device and equipment for diagnosing air leakage of an air inlet pipeline of an engine.
Background
The air leakage of the air inlet pipeline of the diesel engine is one of common faults of the engine, the performance of the engine is greatly influenced by the air leakage of the engine, and the engine after air leakage has poor dynamic performance, deteriorated oil consumption and increased smoke intensity, so that great influence is caused to users and the environment. In addition, the Diesel oil emission standard in China has entered the six-emission stage, which puts higher demands on the engine, for example, the six-emission standard requires a new Diesel Particulate Filter (DPF) after-treatment device, and if the DPF cannot be accurately diagnosed in the case of air leakage, the DPF can be quickly deposited and even blocked and burned.
Therefore, how to improve the accuracy of the air leakage diagnosis of the engine air inlet pipeline becomes a problem to be solved urgently in the field.
Disclosure of Invention
The application provides a method, a device and equipment for diagnosing air leakage of an engine air inlet pipeline, and aims to improve the accuracy of air leakage diagnosis of the engine air inlet pipeline.
In order to achieve the above object, the present application provides the following technical solutions:
a method for diagnosing air leakage of an engine air inlet pipeline comprises the following steps:
acquiring parameter items collected by a sensor preset in an air inlet pipeline; wherein the air inlet line comprises a high pressure line and a low pressure line, the sensor is disposed at an air outlet end of an air filter, and the parameter item indicates an inlet air flow rate of air flowing through the air filter;
when the engine is detected to be in an idling state and the value of the intake air flow is larger than a first preset threshold value, prompting a user that the high-pressure pipeline leaks air;
when the engine is detected to be in an idling state and the value of the intake air flow is smaller than a second preset threshold value, prompting the user that the low-pressure pipeline leaks air; the second preset threshold is smaller than the first preset threshold.
Optionally, the prompting the user that the high-pressure pipeline leaks air comprises:
and controlling the warning lamp to light up, wherein the warning lamp is used for prompting a user of air leakage of the high-pressure pipeline.
Optionally, the prompting the user that the high-pressure pipeline leaks air comprises:
and controlling a buzzer to light, wherein the buzzer is used for prompting a user that the high-pressure pipeline leaks air.
Optionally, detecting that the engine is in an idle state, and under the condition that the value of the intake air flow is greater than a first preset threshold, prompting the user that the high-pressure pipeline leaks air, include:
prompting a user that the high-pressure pipeline is slightly leaked under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a first value range;
prompting the user of moderate air leakage of the high-pressure pipeline under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a second value range;
prompting the user that the high-pressure pipeline is severely leaked under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a third value range;
the lower value limit of the first value range is larger than a first preset threshold, the upper value limit of the first value range is smaller than the lower value limit of the second value range, and the upper value limit of the second value range is smaller than the lower value limit of the third value range.
Optionally, the prompting the user that the high-pressure pipeline is slightly air-leaked includes:
and controlling a preset warning lamp to light a green lamp, wherein the green lamp is used for prompting a user that the high-pressure pipeline slightly leaks air.
Optionally, the prompting the user of the moderate leakage of the high-pressure pipeline includes:
and controlling a preset warning lamp to light a yellow lamp, wherein the yellow lamp is used for prompting a user about moderate air leakage of the high-pressure pipeline.
Optionally, the prompting the user of the severe air leakage of the high-pressure pipeline includes:
and controlling a preset warning lamp to light a red lamp, wherein the red lamp is used for prompting a user that the high-pressure pipeline is seriously leaked.
A gas leakage diagnosis device for an engine intake line, comprising:
the acquisition unit is used for acquiring parameter items acquired by a sensor preset in the air inlet pipeline; wherein the air inlet line comprises a high pressure line and a low pressure line, the sensor is disposed at an air outlet end of an air filter, and the parameter item indicates an inlet air flow rate of air flowing through the air filter;
the first prompting unit is used for prompting a user that the high-pressure pipeline leaks air when the engine is detected to be in an idle state and the value of the air inflow is larger than a first preset threshold value;
the second prompting unit is used for prompting the user that the low-pressure pipeline leaks air when the engine is detected to be in an idle state and the value of the intake air flow is smaller than a second preset threshold value; the second preset threshold is smaller than the first preset threshold.
A computer-readable storage medium comprising a stored program, wherein the program executes the method for diagnosing gas leakage in an engine intake conduit.
A gas leakage diagnosis device of an engine intake line, comprising: a processor, a memory, and a bus; the processor and the memory are connected through the bus;
the memory is used for storing a program and the processor is used for running the program, wherein the program is run for executing the air leakage diagnosis method of the engine air inlet pipeline.
The technical scheme that this application provided acquires the parameter item that the sensor that presets in the air inlet pipeline gathered, and wherein, the air inlet pipeline includes high-pressure line and low-pressure line, and the sensor is settled at the end of giving vent to anger of empty filter, and parameter item indicates the air intake flow of the air of flowing through empty filter. When the engine is detected to be in an idling state and the value of the intake air flow is larger than a first preset threshold value, a user is prompted to leak air from the high-pressure pipeline. When the engine is detected to be in an idling state and the value of the air inflow is smaller than a second preset threshold value, the air leakage of the low-pressure pipeline of the user is prompted, and the second preset threshold value is smaller than the first preset threshold value. By the aid of the scheme, the air leakage diagnosis accuracy of the air inlet pipeline of the engine can be effectively improved, the air leakage diagnosis method and the air leakage diagnosis system can be suitable for engines of different types produced by different manufacturers, and have high applicability.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1a is a schematic diagram of a method for diagnosing a gas leakage of an intake pipe of an engine according to an embodiment of the present disclosure;
FIG. 1b is a schematic block diagram of an engine exhaust treatment configuration according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for diagnosing air leakage in an intake pipe of an engine according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a gas leakage diagnosis device for an engine intake pipe according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1a, a schematic diagram of a method for diagnosing a gas leakage of an intake pipe of an engine according to an embodiment of the present application includes the following steps:
s101: and acquiring parameter items collected by a sensor preset in the air inlet pipeline.
The air inlet pipeline comprises a high-pressure pipeline and a low-pressure pipeline, the sensor is arranged at the air outlet end of the air filter, and the parameter item indicates the air inlet flow of air flowing through the air filter.
It should be noted that, in order to ensure the accuracy of the intake air flow measurement, i.e., the acquisition precision of the sensor, the sensor should be close to the air filter, so as to ensure that the pipeline distance between the sensor and the air filter is less than the preset length.
Specifically, the exhaust gas treatment configuration of the engine is shown in fig. 1 b. In FIG. 1b, the intake air flow meter is a concrete expression of the sensor of the present embodiment. So-called SCR, Selective Catalytic Reduction (SCR), is an aftertreatment device used to reduce exhaust emissions. A so-called DOC, i.e. a Diesel Oxidation Catalyst (DOC), is a type of Diesel exhaust aftertreatment device.
In practical applications, the blow-by gas in the intake line of the engine mainly includes: the air leakage of the low-pressure pipeline is positioned behind the air filter and in front of the air compressor, and the air leakage of the high-pressure pipeline is positioned behind the air compressor. If the low-pressure pipeline leaks air, the air entering the engine is not filtered by the air filter, a large amount of dust and particulate matters can enter the engine to influence the work of the engine, the impeller of the air compressor can be damaged when the particulate matters flow into the air compressor, and the carbon deposition of the DPF can be accelerated due to the accumulation of a large amount of dust. If the high-pressure pipeline leaks air, the air inlet flow of air entering the engine is reduced, so that the torque of the engine is reduced, the oil consumption is increased, and the carbon deposit blockage of the DPF is rapidly aggravated.
S102: and under the condition that the engine is detected to be in an idling state, judging whether the value of the air intake flow is larger than a first preset threshold value.
And if the value of the intake air flow is larger than the first preset threshold value, executing S103, otherwise executing S104.
S103: and prompting the user of air leakage of the high-pressure pipeline of the engine.
The specific implementation manner of prompting the air leakage of the high-pressure pipeline of the engine of the user includes but is not limited to the following: controlling the warning light to light up and controlling the buzzer to sound.
It should be noted that, the intake air pipes of different types of engines of different manufacturers are relatively stable in intake air flow rate when the engines are in idle state, regardless of aging or the pipes are the same. That is, changes in the engine boundary conditions (i.e., aging of the intake pipe, different arrangement of the intake pipe, etc.) have less influence on the intake air flow rate in the idle state. The inventor finds out through research that: when the engine is in an idling state and the high-pressure pipeline leaks air, the intake air flow measured by the intake air flow meter shown in fig. 1b will become obviously large due to no intake resistance after supercharging. Therefore, when the value of the intake air flow is greater than the first preset threshold, the high-pressure pipeline air leakage of the engine can be determined.
Optionally, if the value of the air inflow belongs to the first value range, the user is prompted that the high-pressure pipeline leaks air slightly. And if the value of the air inflow belongs to the second value range, prompting a user of moderate air leakage of the high-pressure pipeline. And if the value of the intake air flow belongs to the third value range, prompting the user that the high-pressure pipeline is severely air-leaked.
In this embodiment, a lower value limit of the first value range is greater than a first preset threshold, an upper value limit of the first value range is smaller than a lower value limit of the second value range, and an upper value limit of the second value range is smaller than a lower value limit of the third value range.
Specifically, if the high-pressure pipeline of the engine leaks air slightly, the warning lamp is controlled to be turned on. If the high-pressure pipeline of the engine leaks air moderately, the warning lamp is controlled to light the yellow lamp. And if the high-pressure pipeline of the engine leaks air seriously, the warning lamp is controlled to light the red light.
It should be noted that the above specific implementation process is only for illustration.
S104: and determining that the high-pressure pipeline of the engine is not leaked.
S105: and under the condition that the engine is detected to be in an idling state, judging whether the value of the intake air flow is smaller than a second preset threshold value.
And if the value of the intake air flow is smaller than a second preset threshold value, executing S106, otherwise executing S107.
And the second preset threshold is smaller than the first preset threshold. In the embodiment of the present application, S105 may be executed concurrently with S102.
S106: and prompting the user of air leakage of the low-pressure pipeline of the engine.
Among them, the inventor found through research: when the engine is idling and the low-pressure line is leaking air, the intake air flow measured by the intake air flow meter shown in fig. 1b will be significantly smaller. Therefore, when the value of the intake air flow is smaller than the second preset threshold, it can be determined that the low-pressure pipe of the engine leaks air.
It should be noted that the first preset threshold and the second preset threshold are obviously different from the normal value of the intake air flow, and the value of the intake air flow can be compared with the first preset threshold and the second preset threshold respectively, so that the air leakage diagnosis of the intake pipeline is realized, and the diagnosis result is high in accuracy and has timeliness. In addition, when the engine is in an idling state, the acquisition precision of the sensor preset in the air inlet pipeline is higher than that under a normal working condition, so that the measurement deviation problem of the sensor under a large flow rate is effectively avoided.
S107: and determining that the low-pressure pipeline of the engine is not leaked.
In conclusion, by using the scheme of the embodiment, the air leakage diagnosis accuracy of the air inlet pipeline of the engine can be effectively improved, and the air leakage diagnosis method and the air leakage diagnosis device can be suitable for different types of engines produced by different manufacturers and have strong applicability.
It should be noted that, in the above embodiments, reference is made to S104, which is an alternative implementation manner of the air leakage diagnosis method for the intake pipe of the engine described in the present application. In addition, S106 mentioned in the above embodiments is also an optional implementation of the air leakage diagnosis method for the intake pipe of the engine described in the present application. For this reason, the flow mentioned in the above embodiment can be summarized as the method shown in fig. 2.
As shown in fig. 2, a schematic diagram of another air leakage diagnosis method for an intake pipe of an engine according to an embodiment of the present application includes the following steps:
s201: and acquiring parameter items collected by a sensor preset in the air inlet pipeline.
The air inlet pipeline comprises a high-pressure pipeline and a low-pressure pipeline, the sensor is arranged at the air outlet end of the air filter, and the parameter item indicates the air inlet flow of air flowing through the air filter.
S202: when the engine is detected to be in an idling state and the value of the intake air flow is larger than a first preset threshold value, a user is prompted to leak air from the high-pressure pipeline.
S203: when the engine is detected to be in the idling state and the value of the air inflow is smaller than a second preset threshold value, the air leakage of the low-pressure pipeline is prompted to a user.
And the second preset threshold value is smaller than the first preset threshold value.
In conclusion, the scheme of the embodiment can effectively improve the accuracy of air leakage diagnosis of the air inlet pipeline of the engine, is suitable for different types of engines produced by different manufacturers, and has strong applicability.
Corresponding to the air leakage diagnosis method of the engine air inlet pipeline provided by the embodiment of the application, the embodiment of the application also provides an air leakage diagnosis device of the engine air inlet pipeline.
As shown in fig. 3, a schematic architecture diagram of a gas leakage diagnosis device for an engine intake line provided in an embodiment of the present application includes:
the acquiring unit 100 is used for acquiring parameter items acquired by a sensor preset in an air inlet pipeline; the air inlet pipeline comprises a high-pressure pipeline and a low-pressure pipeline, the sensor is arranged at the air outlet end of the air filter, and the parameter item indicates the air inlet flow of air flowing through the air filter.
The first prompting unit 200 is configured to prompt a user that the high-pressure pipeline leaks air when the engine is detected to be in an idle state and the value of the intake air flow is greater than a first preset threshold value.
The specific process of the first prompting unit 200 for prompting the leakage of the high-pressure pipeline of the user includes: and controlling a warning lamp to light up, wherein the warning lamp is used for prompting the user of air leakage of the high-pressure pipeline.
The specific process of the first prompting unit 200 for prompting the leakage of the high-pressure pipeline of the user includes: and controlling the buzzer to light, wherein the buzzer is used for prompting a user that the high-pressure pipeline leaks air.
The first prompting unit 200 is specifically configured to: prompting a user that the high-pressure pipeline is slightly air leaked under the condition that the engine is detected to be in an idling state and the value of the air inflow belongs to a first value range; prompting a user of moderate air leakage in the high-pressure pipeline under the condition that the engine is detected to be in an idling state and the value of the air inflow belongs to a second value range; prompting a user that the high-pressure pipeline is severely air leaked under the condition that the engine is detected to be in an idling state and the value of the air inflow belongs to a third value range; the lower value limit of the first value range is larger than a first preset threshold, the upper value limit of the first value range is smaller than the lower value limit of the second value range, and the upper value limit of the second value range is smaller than the lower value limit of the third value range.
The specific process of the first prompting unit 200 for prompting the user that the high-pressure pipeline is slightly air-leaked includes: and controlling a preset warning lamp to light a green lamp, wherein the green lamp is used for prompting a user that the high-pressure pipeline slightly leaks air.
The specific process of the first prompting unit 200 for prompting the user of the moderate air leakage in the high-pressure pipeline includes: and controlling a preset warning lamp to light a yellow lamp, wherein the yellow lamp is used for prompting a user of moderate air leakage of the high-pressure pipeline.
The specific process of the first prompting unit 200 for prompting the user of the severe air leakage of the high-pressure pipeline comprises the following steps: and controlling a preset warning lamp to light a red lamp, wherein the red lamp is used for prompting a user that the high-pressure pipeline is severely air leaked.
The second prompting unit 300 is configured to prompt a user that the low-pressure pipeline leaks air when the engine is detected to be in an idle state and the value of the intake air flow is smaller than a second preset threshold; the second preset threshold is smaller than the first preset threshold.
In conclusion, by using the scheme of the embodiment, the air leakage diagnosis accuracy of the air inlet pipeline of the engine can be effectively improved, and the air leakage diagnosis method and the air leakage diagnosis device can be suitable for different types of engines produced by different manufacturers and have strong applicability.
The present application also provides a computer-readable storage medium including a stored program, wherein the program executes the method for diagnosing a leak in an intake pipe of an engine provided by the present application.
The present application further provides a gas leakage diagnosis device for an engine intake line, comprising: a processor, memory, and a bus. The processor is connected with the memory through a bus, the memory is used for storing programs, and the processor is used for running the programs, wherein when the programs are run, the air leakage diagnosis method of the engine air inlet pipeline, provided by the application, comprises the following steps:
a method for diagnosing air leakage of an engine intake line includes:
acquiring parameter items collected by a sensor preset in an air inlet pipeline; wherein the air inlet line comprises a high pressure line and a low pressure line, the sensor is disposed at an air outlet end of an air filter, and the parameter item indicates an inlet air flow rate of air flowing through the air filter;
when the engine is detected to be in an idling state and the value of the air inflow is larger than a first preset threshold value, prompting a user that the high-pressure pipeline leaks air;
when the engine is detected to be in an idling state and the value of the intake air flow is smaller than a second preset threshold value, prompting the user that the low-pressure pipeline leaks air; the second preset threshold is smaller than the first preset threshold.
Optionally, the prompting the user that the high-pressure pipeline leaks air comprises:
and controlling the warning lamp to light up, wherein the warning lamp is used for prompting a user of air leakage of the high-pressure pipeline.
Optionally, the prompting the user of the leakage of the high-pressure pipeline includes:
and controlling a buzzer to light up, wherein the buzzer is used for prompting a user that the high-pressure pipeline leaks air.
Optionally, the detecting that the engine is in an idle state and the value of the intake air flow is greater than a first preset threshold value, prompting a user that the high-pressure pipeline leaks air includes:
when the engine is detected to be in an idling state and the value of the intake air flow belongs to a first value range, prompting a user that the high-pressure pipeline slightly leaks air;
when the engine is detected to be in an idling state and the value of the intake air flow belongs to a second value range, prompting the user of moderate air leakage of the high-pressure pipeline;
prompting the user that the high-pressure pipeline is severely leaked under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a third value range;
the lower value limit of the first value range is greater than a first preset threshold, the upper value limit of the first value range is less than the lower value limit of the second value range, and the upper value limit of the second value range is less than the lower value limit of the third value range.
Optionally, the prompting a user that the high-pressure pipeline is slightly air-leaked includes:
and controlling a preset warning lamp to light a green lamp, wherein the green lamp is used for prompting a user that the high-pressure pipeline leaks air slightly.
Optionally, the prompting the user of the moderate leakage of the high-pressure pipeline includes:
and controlling a preset warning lamp to light a yellow lamp, wherein the yellow lamp is used for prompting a user about moderate air leakage of the high-pressure pipeline.
Optionally, the prompting the user of the severe air leakage of the high-pressure pipeline includes:
and controlling a preset warning lamp to light a red lamp, wherein the red lamp is used for prompting a user that the high-pressure pipeline is severely air leaked.
The functions described in the method of the embodiment of the present application, if implemented in the form of software functional units and sold or used as independent products, may be stored in a storage medium readable by a computing device. Based on such understanding, part of the contribution to the prior art of the embodiments of the present application or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including several instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for diagnosing a gas leak in an intake pipe of an engine, comprising:
acquiring parameter items collected by a sensor preset in an air inlet pipeline; wherein the air inlet line comprises a high pressure line and a low pressure line, the sensor is disposed at an air outlet end of an air filter, and the parameter item indicates an inlet air flow rate of air flowing through the air filter; the high-pressure pipeline is positioned behind the air compressor, and the low-pressure pipeline is positioned behind the air filter and in front of the air compressor;
when the engine is detected to be in an idling state and the value of the intake air flow is larger than a first preset threshold value, prompting a user that the high-pressure pipeline leaks air;
when the engine is detected to be in an idling state and the value of the intake air flow is smaller than a second preset threshold value, prompting the user that the low-pressure pipeline leaks air; the second preset threshold is smaller than the first preset threshold.
2. The method of claim 1, wherein said prompting a user for said high-pressure line leak comprises:
and controlling the warning lamp to light up, wherein the warning lamp is used for prompting a user of air leakage of the high-pressure pipeline.
3. The method of claim 1, wherein said prompting a user for said high-pressure line leak comprises:
and controlling a buzzer to light up, wherein the buzzer is used for prompting a user that the high-pressure pipeline leaks air.
4. The method according to claim 1, wherein the prompting a user of the high-pressure pipeline gas leakage in the case that the engine is detected to be in an idle state and the value of the intake air flow is greater than a first preset threshold value comprises:
when the engine is detected to be in an idling state and the value of the intake air flow belongs to a first value range, prompting a user that the high-pressure pipeline slightly leaks air;
prompting the user of moderate air leakage of the high-pressure pipeline under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a second value range;
prompting the user that the high-pressure pipeline is severely leaked under the condition that the engine is detected to be in an idling state and the value of the intake air flow belongs to a third value range;
the lower value limit of the first value range is greater than a first preset threshold, the upper value limit of the first value range is less than the lower value limit of the second value range, and the upper value limit of the second value range is less than the lower value limit of the third value range.
5. The method of claim 4, wherein said prompting a user for a slight leak in the high-pressure line comprises:
and controlling a preset warning lamp to light a green lamp, wherein the green lamp is used for prompting a user that the high-pressure pipeline slightly leaks air.
6. The method of claim 4, wherein said prompting a user for a moderate leak in the high-pressure line comprises:
and controlling a preset warning lamp to light a yellow lamp, wherein the yellow lamp is used for prompting a user about moderate air leakage of the high-pressure pipeline.
7. The method of claim 4, wherein said prompting a user that the high-pressure line is heavily deflated comprises:
and controlling a preset warning lamp to light a red lamp, wherein the red lamp is used for prompting a user that the high-pressure pipeline is severely air leaked.
8. A gas leak diagnosis device for an engine intake line, characterized by comprising:
the acquisition unit is used for acquiring parameter items acquired by a sensor preset in the air inlet pipeline; wherein the air intake conduit comprises a high pressure conduit and a low pressure conduit, the sensor is disposed at an air outlet end of an air filter, and the parameter term is indicative of an intake air flow rate of air flowing through the air filter; the high-pressure pipeline is positioned behind the air compressor, and the low-pressure pipeline is positioned behind the air filter and in front of the air compressor;
the first prompting unit is used for prompting a user that the high-pressure pipeline leaks air when the engine is detected to be in an idle state and the value of the air inflow is larger than a first preset threshold value;
the second prompting unit is used for prompting the user of air leakage of the low-pressure pipeline under the condition that the engine is detected to be in an idling state and the value of the air inflow is smaller than a second preset threshold value; the second preset threshold is smaller than the first preset threshold.
9. A computer-readable storage medium characterized by comprising a stored program, wherein the program executes the method for diagnosing a leak in an intake pipe of an engine according to any one of claims 1 to 7.
10. A gas leakage diagnosis apparatus of an engine intake pipe, characterized by comprising: a processor, memory, and a bus; the processor and the memory are connected through the bus;
the memory is used for storing a program and the processor is used for running the program, wherein the program is run to execute the air leakage diagnosis method of the engine air inlet pipeline according to any one of claims 1-7.
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| CN202110627035.8A CN113175382B (en) | 2021-06-04 | 2021-06-04 | Air leakage diagnosis method, device and equipment for engine air inlet pipeline |
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| CN202110627035.8A CN113175382B (en) | 2021-06-04 | 2021-06-04 | Air leakage diagnosis method, device and equipment for engine air inlet pipeline |
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| CN113702056B (en) * | 2021-08-20 | 2024-03-19 | 上海新动力汽车科技股份有限公司 | Real-time early warning method for air leakage of engine air inlet pipe |
| CN114542284B (en) * | 2022-03-15 | 2023-04-18 | 潍柴动力股份有限公司 | Air leakage diagnosis method and device for engine air inlet system and electronic equipment |
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