CN114233501A - Gas injection valve monitoring method and related equipment - Google Patents
Gas injection valve monitoring method and related equipment Download PDFInfo
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- CN114233501A CN114233501A CN202111339391.6A CN202111339391A CN114233501A CN 114233501 A CN114233501 A CN 114233501A CN 202111339391 A CN202111339391 A CN 202111339391A CN 114233501 A CN114233501 A CN 114233501A
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- 238000002347 injection Methods 0.000 title claims abstract description 200
- 239000007924 injection Substances 0.000 title claims abstract description 200
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000012544 monitoring process Methods 0.000 title claims abstract description 36
- 230000008859 change Effects 0.000 claims abstract description 50
- 239000007789 gas Substances 0.000 claims description 246
- 230000002159 abnormal effect Effects 0.000 claims description 26
- 239000002737 fuel gas Substances 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 8
- 230000005856 abnormality Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 abstract description 9
- 238000005507 spraying Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 238000004590 computer program Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
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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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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
According to the gas injection valve monitoring method and the related equipment provided by the disclosure, under the steady-state working condition of an engine, a first gas pressure of a gas injection valve of the engine before opening for injection and a second gas pressure of the gas injection valve after opening for injection can be obtained; obtaining the gas pressure difference of the gas injection valve according to the first gas pressure and the second gas pressure; and determining whether the gas injection valve has a fault or not by using the gas pressure difference. This is disclosed judges the gas injection valve whether break down through monitoring the transient state change of gas pressure before opening the gas injection valve and after spraying, can realize carrying out real-time effective monitoring to the drive condition of gas injection valve to correctly judge whether the gas injection valve breaks down.
Description
Technical Field
The disclosure relates to the technical field of engines, in particular to a gas injection valve monitoring method and related equipment.
Background
The gas injection valve is one of the core parts of the gas engine. The working performance of the gas injection valve directly influences the performance of the engine. At present, the working state of the gas injection valve is mainly judged by monitoring the open circuit and short circuit faults of the gas injection valve, but the actual driving condition of the gas injection valve cannot be effectively monitored. For example: when the gas injection valve is blocked and stuck, whether the gas injection valve is in fault or not can not be correctly judged currently.
Therefore, how to effectively monitor the gas injection valve becomes a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above problems, the present disclosure provides a gas injection valve monitoring method and related apparatus that overcome or at least partially solve the above problems, and the technical solutions are as follows:
a gas injection valve monitoring method comprising:
under the steady-state working condition of an engine, obtaining a first gas pressure of a gas injection valve of the engine before opening and injecting and a second gas pressure of the gas injection valve after opening and injecting;
obtaining the gas pressure difference of the gas injection valve according to the first gas pressure and the second gas pressure;
and determining whether the gas injection valve has a fault or not by using the gas pressure difference.
Optionally, the determining whether the gas injection valve has a fault by using the gas pressure difference includes:
determining that the gas injection valve is abnormal in injection and counting abnormal injection when the gas pressure difference is larger than a preset pressure difference threshold value;
and determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
Optionally, after the determining that the gas injection valve is out of order, the method further comprises:
and outputting the fault information of the gas injection valve.
Optionally, the method further includes:
obtaining a rotating speed change value and a load change value of the engine within a preset time range;
and under the condition that the rotating speed change value is smaller than a preset rotating speed change threshold value and the load change value is smaller than a preset load change threshold value, determining that the engine is in the steady-state working condition.
Optionally, the engine is a premixed gas engine.
Optionally, the gas injection valve includes 6 nozzles, and each of the nozzles corresponds to injection of one cylinder in the engine.
A gas injection valve monitoring device comprising: a gas pressure obtaining unit, a gas pressure difference obtaining unit, and a failure determining unit,
the gas pressure obtaining unit is used for obtaining a first gas pressure of a gas injection valve of the engine before opening and injecting and a second gas pressure of the gas injection valve after opening and injecting when the engine is in a steady-state working condition;
the fuel gas pressure difference obtaining unit is used for obtaining the fuel gas pressure difference of the fuel gas injection valve according to the first fuel gas pressure and the second fuel gas pressure;
and the fault determining unit is used for determining whether the gas injection valve has a fault or not by using the gas pressure difference.
Optionally, the fault determining unit includes: an abnormality determination subunit and a failure determination subunit,
the abnormality determining subunit is configured to determine that the gas injection valve is abnormal in injection and perform abnormal injection counting when the gas pressure difference is greater than a preset pressure difference threshold;
and the fault determining subunit is used for determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
A computer-readable storage medium, having a program stored thereon, which when executed by a processor, implements a gas injection valve monitoring method as in any one of the above.
An electronic device comprising at least one processor, and at least one memory connected to the processor, a bus; the processor and the memory complete mutual communication through the bus; the processor is configured to invoke program instructions in the memory to perform a gas injection valve monitoring method as described in any one of the above.
By means of the technical scheme, the gas injection valve monitoring method and the related equipment provided by the disclosure can obtain the first gas pressure of the gas injection valve of the engine before opening and injecting and the second gas pressure of the gas injection valve after opening and injecting under the condition that the engine is in a steady state working condition; obtaining the gas pressure difference of the gas injection valve according to the first gas pressure and the second gas pressure; and determining whether the gas injection valve has a fault or not by using the gas pressure difference. This is disclosed judges the gas injection valve whether break down through monitoring the transient state change of gas pressure before opening the gas injection valve and after spraying, can realize carrying out real-time effective monitoring to the drive condition of gas injection valve to correctly judge whether the gas injection valve breaks down.
The foregoing description is only an overview of the technical solutions of the present disclosure, and the embodiments of the present disclosure are described below in order to make the technical means of the present disclosure more clearly understood and to make the above and other objects, features, and advantages of the present disclosure more clearly understandable.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the disclosure. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 illustrates a schematic flow chart diagram of one implementation of a gas injection valve monitoring method provided by an embodiment of the present disclosure;
FIG. 2 illustrates a schematic flow chart diagram of another implementation of a gas injection valve monitoring method provided by an embodiment of the present disclosure;
FIG. 3 illustrates a schematic flow chart diagram of another implementation of a gas injection valve monitoring method provided by an embodiment of the present disclosure;
FIG. 4 illustrates a schematic flow chart diagram of another implementation of a gas injection valve monitoring method provided by an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a gas injection valve monitoring device provided by the embodiment of the disclosure;
fig. 6 shows a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, a schematic flow chart of an implementation manner of a gas injection valve monitoring method provided in an embodiment of the present disclosure may include:
s100, under the condition that the engine is in a steady state working condition, first gas pressure of a gas injection valve of the engine before opening and injecting and second gas pressure of the gas injection valve after opening and injecting are obtained.
Alternatively, the engine provided by the embodiment of the disclosure may be a premixed gas engine. In particular, the engine may be a premixed gas engine with single injection. The single-point injection means that all cylinders in the engine share one fuel gas injection valve for injection.
Optionally, the gas injection valve provided by the embodiment of the present disclosure may include 6 nozzles, and each nozzle corresponds to injection of one cylinder in the engine.
The steady-state operating condition may be an operating condition of the engine at a constant speed, a constant load, a stable temperature, and a stable pressure. Because the gas pressure can be maintained in a steady state pressure range when the gas engine is in a steady state working condition, when the gas injection valve is opened once, the gas pressure can be increased transiently, then the gas pressure can be reduced after the consumption of the gas engine, and the gas pressure can be repeated until the next time the gas injection valve is opened. It can be seen from this that, if the gas injection valve fails, the transient change in gas pressure, which is described above, does not occur. Based on this characteristic, this disclosed embodiment can monitor the gas injection valve when the engine is in steady state operating mode.
It can be understood that the opening and closing of the gas injection valve is controllable, so that the gas pressure of the gas injection valve before and after opening can be monitored by the disclosed embodiment.
It is understood that in actual operation of a gas engine, it is difficult to maintain the engine speed and load absolutely constant. Under normal conditions, the engine speed and the engine load float within a certain error range can be regarded as a steady-state working condition. Therefore, the disclosed embodiment can monitor the rotation speed change and the load change of the engine and determine whether the engine is in the steady-state working condition.
Optionally, based on the method shown in fig. 1, as shown in fig. 2, a schematic flow chart of another implementation of the gas injection valve monitoring method provided in the embodiment of the present disclosure may further include:
and S01, obtaining the rotating speed change value and the load change value of the engine in the preset time range.
And S02, determining that the engine is in a steady-state working condition under the condition that the rotating speed change value is smaller than the preset rotating speed change threshold value and the load change value is smaller than the preset load change threshold value.
The preset rotation speed change threshold and the preset load change threshold may be determined according to engine performance of an engine bench test, and the embodiment of the present disclosure is not further limited herein. It is understood that in the case where the rotation speed variation value is not less than the preset rotation speed variation threshold value or the load variation value is not less than the preset load variation threshold value, it is determined that the engine is not in the steady-state operating condition.
According to the embodiment of the disclosure, whether the engine is in the steady-state working condition or not can be accurately determined by whether the rotating speed change value and the load change value of the engine are in the reasonable change range, so that the transient change characteristic of the gas pressure, which can truly reflect the actual driving condition of the gas injection valve, can be obtained.
And S200, obtaining the gas pressure difference of the gas injection valve according to the first gas pressure and the second gas pressure.
Specifically, the disclosed embodiments may directly determine the difference between the first gas pressure and the second gas pressure as the gas pressure difference of the gas injection valve.
S300, determining whether the gas injection valve has a fault or not by using the gas pressure difference.
Optionally, the embodiment of the present disclosure may determine that the gas injection valve fails when the gas pressure difference is greater than a preset injection valve failure threshold. The preset injection valve failure threshold may be determined according to engine performance of an engine bench test, and the embodiments of the present disclosure are not further limited herein.
Alternatively, based on the method shown in fig. 1, as shown in fig. 3, a schematic flow chart of another implementation of the gas injection valve monitoring method provided in the embodiment of the present disclosure, step S300 may include:
and S310, determining that the gas injection valve is abnormal in injection and counting the abnormal injection when the gas pressure difference is larger than a preset pressure difference threshold value.
The preset differential pressure threshold may be determined according to the engine performance of the engine bench test, and the embodiment of the disclosure is not further limited herein. The embodiment of the disclosure can judge whether the gas pressure difference is greater than a preset pressure difference threshold value, if so, the gas injection valve is determined to be abnormal in injection and abnormal in injection counting is carried out, and if not, the next judgment result is returned to wait.
Optionally, in the embodiment of the present disclosure, when it is determined that the primary gas pressure difference is greater than the preset pressure difference threshold, 1 may be added on the basis of the original injection abnormal count value.
And S320, determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
The preset alarm threshold value may be set according to a requirement, and the embodiment of the present disclosure is not further limited herein.
For ease of understanding, the description is made herein by way of example: assuming that the preset alarm threshold value is 3, adding 1 to the original abnormal counting value every time the gas pressure difference is determined to be greater than the preset pressure difference threshold value for 1 time, and determining that the gas injection valve is in fault when the abnormal counting value is 4 after the gas pressure difference is determined to be greater than the preset pressure difference threshold value for 4 times.
According to the gas injection valve monitoring method provided by the disclosure, under the steady-state working condition of an engine, a first gas pressure of a gas injection valve of the engine before opening for injection and a second gas pressure of the gas injection valve after opening for injection can be obtained; acquiring a gas pressure difference of a gas injection valve according to the first gas pressure and the second gas pressure; and determining whether the gas injection valve is in failure or not by using the gas pressure difference. This is disclosed judges the gas injection valve whether break down through monitoring the transient state change of gas pressure before opening the gas injection valve and after spraying, can realize carrying out real-time effective monitoring to the drive condition of gas injection valve to correctly judge whether the gas injection valve breaks down.
Optionally, based on the method shown in fig. 3, as shown in fig. 4, a schematic flow chart of another implementation manner of the gas injection valve monitoring method provided in the embodiment of the present disclosure, after step S320, the method further includes:
and S330, outputting fault information of the gas injection valve.
Wherein, the gas injection valve fault information can be that gas injection valve fault signal lamp lights to remind the driver in time to change the gas injection valve, thereby guarantee the engine performance.
Although the operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order, and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.
Corresponding to the above method embodiment, an embodiment of the present disclosure further provides a gas injection valve monitoring device, which has a structure as shown in fig. 5, and may include: a gas pressure obtaining unit 100, a gas pressure difference obtaining unit 200, and a failure determining unit 300.
The fuel gas pressure obtaining unit 100 is used for obtaining a first fuel gas pressure of a fuel gas injection valve of the engine before opening injection and a second fuel gas pressure of the fuel gas injection valve after opening injection when the engine is in a steady-state working condition.
Alternatively, the engine provided by the embodiment of the disclosure may be a premixed gas engine. In particular, the engine may be a premixed gas engine with single injection. The single-point injection means that all cylinders in the engine share one fuel gas injection valve for injection.
Optionally, the gas injection valve provided by the embodiment of the present disclosure may include 6 nozzles, and each nozzle corresponds to injection of one cylinder in the engine.
The steady-state operating condition may be an operating condition of the engine at a constant speed, a constant load, a stable temperature, and a stable pressure. Because the gas pressure can be maintained in a steady state pressure range when the gas engine is in a steady state working condition, when the gas injection valve is opened once, the gas pressure can be increased transiently, then the gas pressure can be reduced after the consumption of the gas engine, and the gas pressure can be repeated until the next time the gas injection valve is opened. It can be seen from this that, if the gas injection valve fails, the transient change in gas pressure, which is described above, does not occur. Based on this characteristic, this disclosed embodiment can monitor the gas injection valve when the engine is in steady state operating mode.
It can be understood that the opening and closing of the gas injection valve is controllable, so that the gas pressure of the gas injection valve before and after opening can be monitored by the disclosed embodiment.
It is understood that in actual operation of a gas engine, it is difficult to maintain the engine speed and load absolutely constant. Under normal conditions, the engine speed and the engine load float within a certain error range can be regarded as a steady-state working condition. Therefore, the disclosed embodiment can monitor the rotation speed change and the load change of the engine and determine whether the engine is in the steady-state working condition.
Optionally, the gas injection valve monitoring device may further include: the device comprises a rotating speed and load obtaining unit and a stable working condition determining unit.
And the rotating speed and load obtaining unit is used for obtaining a rotating speed change value and a load change value of the engine within a preset time range.
And the stable working condition determining unit is used for determining that the engine is in a stable working condition under the condition that the rotating speed change value is smaller than the preset rotating speed change threshold value and the load change value is smaller than the preset load change threshold value.
The preset rotation speed change threshold and the preset load change threshold may be determined according to engine performance of an engine bench test, and the embodiment of the present disclosure is not further limited herein. It is understood that in the case where the rotation speed variation value is not less than the preset rotation speed variation threshold value or the load variation value is not less than the preset load variation threshold value, it is determined that the engine is not in the steady-state operating condition.
According to the embodiment of the disclosure, whether the engine is in the steady-state working condition or not can be accurately determined by whether the rotating speed change value and the load change value of the engine are in the reasonable change range, so that the transient change characteristic of the gas pressure, which can truly reflect the actual driving condition of the gas injection valve, can be obtained.
A fuel gas pressure difference obtaining unit 200 for obtaining a fuel gas pressure difference of the fuel gas injection valve according to the first fuel gas pressure and the second fuel gas pressure.
Specifically, the disclosed embodiments may directly determine the difference between the first gas pressure and the second gas pressure as the gas pressure difference of the gas injection valve.
And a malfunction determining unit 300 for determining whether the gas injection valve malfunctions using the gas pressure difference.
Optionally, the embodiment of the present disclosure may determine that the gas injection valve fails when the gas pressure difference is greater than a preset injection valve failure threshold. The preset injection valve failure threshold may be determined according to engine performance of an engine bench test, and the embodiments of the present disclosure are not further limited herein.
Optionally, the fault determining unit 300 includes: an abnormality determination subunit and a failure determination subunit.
And the abnormality determining subunit is used for determining that the gas injection valve is abnormal in injection and counting the abnormal injection when the gas pressure difference is larger than a preset pressure difference threshold value.
The preset differential pressure threshold may be determined according to the engine performance of the engine bench test, and the embodiment of the disclosure is not further limited herein.
Optionally, in the embodiment of the present disclosure, when it is determined that the primary gas pressure difference is greater than the preset pressure difference threshold, 1 may be added on the basis of the original injection abnormal count value.
And the fault determining subunit is used for determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
The preset alarm threshold value may be set according to a requirement, and the embodiment of the present disclosure is not further limited herein.
For ease of understanding, the description is made herein by way of example: assuming that the preset alarm threshold value is 3, adding 1 to the original abnormal counting value every time the gas pressure difference is determined to be greater than the preset pressure difference threshold value for 1 time, and determining that the gas injection valve is in fault when the abnormal counting value is 4 after the gas pressure difference is determined to be greater than the preset pressure difference threshold value for 4 times.
The gas injection valve monitoring device provided by the disclosure can obtain a first gas pressure of a gas injection valve of an engine before opening for injection and a second gas pressure of the gas injection valve after opening for injection under the steady-state working condition of the engine; acquiring a gas pressure difference of a gas injection valve according to the first gas pressure and the second gas pressure; and determining whether the gas injection valve is in failure or not by using the gas pressure difference. This is disclosed judges the gas injection valve whether break down through monitoring the transient state change of gas pressure before opening the gas injection valve and after spraying, can realize carrying out real-time effective monitoring to the drive condition of gas injection valve to correctly judge whether the gas injection valve breaks down.
Optionally, the gas injection valve monitoring device may further include: and a fault information output unit.
And the fault information output unit is used for outputting the fault information of the gas injection valve after the fault determining subunit determines that the gas injection valve has the fault.
Wherein, the gas injection valve fault information can be that gas injection valve fault signal lamp lights to remind the driver in time to change the gas injection valve, thereby guarantee the engine performance.
The gas injection valve monitoring device includes a processor and a memory, the gas pressure obtaining unit 100, the gas pressure difference obtaining unit 200, the failure determining unit 300, 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 set one or more than one, whether the gas injection valve breaks down or not is judged by monitoring transient change of gas pressure of the gas injection valve before and after the gas injection valve is opened through adjusting kernel parameters, and real-time effective monitoring on the driving condition of the gas injection valve can be realized, so that whether the gas injection valve breaks down or not is judged correctly.
An embodiment of the present disclosure provides a computer-readable storage medium having a program stored thereon, the program implementing the gas injection valve monitoring method when executed by a processor.
The disclosed embodiment provides a processor for running a program, wherein the program runs to execute the gas injection valve monitoring method.
As shown in fig. 6, an embodiment of the present disclosure provides an electronic device 1000, where the electronic device 1000 includes at least one processor 1001, and at least one memory 1002 and a bus 1003 connected to the processor 1001; the processor 1001 and the memory 1002 complete communication with each other through the bus 1003; processor 1001 is configured to call program instructions in memory 1002 to perform the gas injection valve monitoring method described above. The electronic device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present disclosure also provides a computer program product adapted to perform a program of initializing a gas injection valve monitoring method step when executed on an electronic device.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, electronic devices (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, an electronic device includes one or more processors (CPUs), memory, and a bus. The electronic device may also include input/output interfaces, network interfaces, and the like.
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. The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
In the description of the present disclosure, it is to be understood that the directions or positional relationships indicated as referring to the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the positions or elements referred to must have specific directions, be constituted and operated in specific directions, and thus, are not to be construed as limitations of the present disclosure.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The above are merely examples of the present disclosure, and are not intended to limit the present disclosure. Various modifications and variations of this disclosure will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the scope of the claims of the present disclosure.
Claims (10)
1. A gas injection valve monitoring method, comprising:
under the steady-state working condition of an engine, obtaining a first gas pressure of a gas injection valve of the engine before opening and injecting and a second gas pressure of the gas injection valve after opening and injecting;
obtaining the gas pressure difference of the gas injection valve according to the first gas pressure and the second gas pressure;
and determining whether the gas injection valve has a fault or not by using the gas pressure difference.
2. The method of claim 1, wherein said determining whether said gas injection valve is malfunctioning using said gas pressure differential comprises:
determining that the gas injection valve is abnormal in injection and counting abnormal injection when the gas pressure difference is larger than a preset pressure difference threshold value;
and determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
3. The method of claim 2, wherein after said determining that said gas injection valve is malfunctioning, said method further comprises:
and outputting the fault information of the gas injection valve.
4. The method of claim 1, further comprising:
obtaining a rotating speed change value and a load change value of the engine within a preset time range;
and under the condition that the rotating speed change value is smaller than a preset rotating speed change threshold value and the load change value is smaller than a preset load change threshold value, determining that the engine is in the steady-state working condition.
5. The method of claim 1, wherein the engine is a premixed gas engine.
6. The method of claim 1, wherein said gas injection valve comprises 6 injectors, each corresponding to injection from one cylinder of said engine.
7. A gas injection valve monitoring device, comprising: a gas pressure obtaining unit, a gas pressure difference obtaining unit, and a failure determining unit,
the gas pressure obtaining unit is used for obtaining a first gas pressure of a gas injection valve of the engine before opening and injecting and a second gas pressure of the gas injection valve after opening and injecting when the engine is in a steady-state working condition;
the fuel gas pressure difference obtaining unit is used for obtaining the fuel gas pressure difference of the fuel gas injection valve according to the first fuel gas pressure and the second fuel gas pressure;
and the fault determining unit is used for determining whether the gas injection valve has a fault or not by using the gas pressure difference.
8. The apparatus according to claim 7, wherein the failure determination unit comprises: an abnormality determination subunit and a failure determination subunit,
the abnormality determining subunit is configured to determine that the gas injection valve is abnormal in injection and perform abnormal injection counting when the gas pressure difference is greater than a preset pressure difference threshold;
and the fault determining subunit is used for determining that the gas injection valve has a fault under the condition that the numerical value of the abnormal injection count is greater than a preset alarm threshold value.
9. A computer-readable storage medium, on which a program is stored, which program, when being executed by a processor, is characterized by carrying out a gas injection valve monitoring method according to any one of claims 1 to 6.
10. An electronic device comprising at least one processor, and at least one memory connected to the processor, a bus; the processor and the memory complete mutual communication through the bus; the processor is configured to invoke program instructions in the memory to perform the gas injection valve monitoring method of any of claims 1 to 6.
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