CN115199429B - Fuel injection closed-loop monitoring method of fuel injector and related equipment - Google Patents
Fuel injection closed-loop monitoring method of fuel injector and related equipment Download PDFInfo
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- CN115199429B CN115199429B CN202210640577.3A CN202210640577A CN115199429B CN 115199429 B CN115199429 B CN 115199429B CN 202210640577 A CN202210640577 A CN 202210640577A CN 115199429 B CN115199429 B CN 115199429B
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- 239000000446 fuel Substances 0.000 title claims abstract description 102
- 238000002347 injection Methods 0.000 title claims abstract description 75
- 239000007924 injection Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 12
- 238000012806 monitoring device Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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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
- F02D41/30—Controlling fuel injection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The embodiment of the application discloses a fuel injection closed-loop monitoring method of a fuel injector and related equipment, which can effectively monitor the actual execution state of the fuel injector. The method comprises the following steps: acquiring oil injection quantity information of an oil injector; determining expected power-on time according to the oil injection quantity information; controlling the oil injector to spray oil according to the expected power-on time, and determining target power-on time; judging whether the power-on time difference value of the expected power-on time and the target power-on time is within a power-on time constraint range or not; if not, controlling the fuel injector to stop the fuel injection operation.
Description
Technical Field
The embodiment of the application relates to the technical field of data monitoring, in particular to a fuel injection closed-loop monitoring method of a fuel injector and related equipment.
Background
The fuel injector can precisely control the fuel injection quantity according to the fuel injection pulse signal, and the fuel injector is widely applied to gasoline engines and diesel engines, and most of the existing diesel engine controllers determine whether the fuel injector is normally executed by comparing with ET (energy Time) transmitted by an application layer. However, in practical application, the application layer ET may have a deviation between execution and demand in the process of transmitting and checking to the execution driving layer, so that it is difficult to determine the actual execution condition of the fuel injector, and therefore, the actual execution state of the fuel injector cannot be effectively monitored.
Disclosure of Invention
The embodiment of the application provides a fuel injection closed-loop monitoring method of a fuel injector and related equipment, which can effectively monitor the actual execution state of the fuel injector.
The first aspect of the application provides a method for monitoring a fuel injection closed loop of a fuel injector, comprising the following steps:
acquiring oil injection quantity information of an oil injector;
determining expected power-on time according to the oil injection quantity information;
controlling the oil injector to spray oil according to the expected power-on time, and determining target power-on time;
judging whether the power-on time difference value of the expected power-on time and the target power-on time is within a power-on time constraint range or not;
if not, controlling the fuel injector to stop the fuel injection operation.
Optionally, the determining the expected energizing time according to the fuel injection quantity information includes:
determining a first power-on time and a second power-on time according to the oil injection quantity information;
determining a preset range of the power-on time;
acquiring a target time difference value through the first power-on time and the second power-on time;
judging whether the target time difference value is within the preset range or not;
if yes, acquiring the expected power-on time.
Optionally, the determining whether the current time difference between the expected current time and the target current time is within a current time constraint range includes:
determining the power-on constraint range;
acquiring an energization time difference value according to the expected energization time and the target energization time;
and judging whether the power-on time difference value is contained in the power-on constraint range.
Optionally, after the determining whether the time difference is within the preset range, the method further includes:
and if not, executing the step of acquiring the oil injection quantity information of the oil injector.
Optionally, the obtaining the power-on time difference according to the expected power-on time and the target power-on time includes:
comparing the expected power-on time with the target power-on time;
and if the expected power-on time is determined to be greater than the target power-on time, subtracting the expected power-on time from the target power-on time, and acquiring the power-on time difference.
And if the target power-on time is determined to be greater than the expected power-on time, subtracting the target power-on time from the expected power-on time, and acquiring the power-on time difference.
A second aspect of the present application provides a closed-loop monitoring system for fuel injection by a fuel injector, comprising:
the acquisition unit is used for acquiring oil injection quantity information of the oil injector;
a determining unit for determining an expected energization time based on the injection amount information;
the first control unit is used for controlling the oil injector to spray oil according to the expected power-on time and determining target power-on time;
a judging unit configured to judge whether an energization time difference value between the desired energization time and the target energization time is within an energization time constraint range;
and the second control unit is used for controlling the fuel injector to perform the stop operation when the judging unit determines that the current time difference value of the expected current time and the target current time is not in the current time constraint range.
Optionally, the determining unit includes:
the first determining module is used for determining a first energizing time and a second energizing time according to the oil injection quantity information;
the second determining module is used for determining a preset range of the power-on time;
the first acquisition module is used for acquiring a target time difference value through the first power-on time and the second power-on time;
the first judging module is used for judging whether the target time difference value is within the preset range;
and the second acquisition module is used for acquiring the expected power-on time when the judgment module determines that the target time difference value is within the preset range.
Optionally, the judging unit includes:
a third determining module, configured to determine the power-on constraint range;
a third obtaining module, configured to obtain an energization time difference value according to the expected energization time and the target energization time;
and the second judging module is used for judging whether the power-on time difference value is included in the power-on constraint range.
A third aspect of the present application provides a fuel injector fuel injection closed loop monitoring device, comprising: a processor, a memory, an input-output unit, and a bus;
the processor is connected with the memory, the input/output unit and the bus;
the memory holds a program that the processor invokes to perform the method of any one of the first aspect and the first aspect.
A fourth aspect of the present application provides a computer readable storage medium having a program stored thereon, which when executed on a computer performs the method according to any of the first and second aspects.
From the above technical solutions, the embodiments of the present application have the following advantages:
according to the method for monitoring the closed-loop injection of the fuel injector, firstly, the fuel injection quantity information of the fuel injector is obtained, then the expected power-on time is determined according to the fuel injection quantity information, the fuel injector is controlled to inject fuel according to the expected power-on time, the target power-on time is determined, and then whether the power-on time difference value between the expected power-on time and the target power-on time is within the power-on time constraint range is further judged; if the actual power-on time is not within the deviation range, the fuel injector is controlled to stop the fuel injection operation, and further, the actual execution state of the fuel injector can be effectively monitored by comparing the expected power-on time with the target power-on time and judging whether the actual power-on time is within the deviation range or not, and further, the working state of the fuel injector is determined.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a fuel injector fuel injection closed-loop monitoring method of the present application;
FIG. 2 is a schematic diagram of another embodiment of a fuel injector fuel injection closed-loop monitoring method of the present application;
FIG. 3 is a schematic diagram of one embodiment of a fuel injector closed loop monitoring system of the present application;
FIG. 4 is a schematic diagram of one embodiment of a fuel injector fuel injection closed loop monitoring apparatus of the present application.
Detailed Description
In practical application, the application layer ET may have a situation that the execution deviates from the requirement, so that it is difficult to determine the actual execution situation of the fuel injector, and effective monitoring of the actual execution state of the fuel injector cannot be performed.
Based on the above, the application provides a method and related equipment for monitoring the fuel injection closed loop of a fuel injector, which can effectively monitor the actual execution state of the fuel injector.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The method of the present application may be applied to a server terminal or other devices with logic processing capability, and the present application is not limited thereto. For convenience of description, the following description will take an execution body as an example of a system.
Referring to fig. 1, an embodiment of a method for monitoring a closed loop fuel injection of a fuel injector according to a first aspect of the present application includes:
101. the system acquires the oil injection quantity information of the oil injector;
in this embodiment of the present application, before the system drives the injector to inject fuel according to the injector driving chip, first, the fuel injection amount information of the injector needs to be acquired first, where it needs to be described that the fuel injection amount of the injector is affected by the engine or other factors, and the fuel injection amount information of the injector is not specifically limited in this application. The oil sprayer driving chip is connected with the oil sprayer, and when the oil sprayer driving chip sends an oil spraying signal to the oil sprayer, the oil sprayer can perform oil spraying treatment. More specifically, the injector driving chip is controlled by the power-on time, that is, when an external electric signal acts on the injector driving chip, the injector driving chip continuously sends an injection signal to the injector, so that the injector continuously performs injection treatment.
102. The system determines expected power-on time according to the oil injection quantity information;
in the embodiment of the application, after the system acquires the fuel injection quantity information of the fuel injector, the corresponding power-on refueling time is further calculated and determined according to the fuel injection quantity information, wherein it is required to be noted that the expected power-on time acquired through the fuel injection quantity calculation is the power-on time in the ideal state. The desired energization time is obtained under the condition that the preset condition is satisfied, and description of the preset condition will be expanded in the subsequent embodiments, which will not be specifically described herein. The system supplies power to the injector driver chip through the desired power-on time. After the system determines the desired power-on time, step 103 is performed.
103. The system controls the oil injector to spray oil according to the expected power-on time, and determines target power-on time;
in the embodiment of the application, after the system obtains the expected power-on time, the power is supplied to the oil sprayer driving chip according to the expected power-on time, so that the oil sprayer driving chip sends an oil spraying signal to the oil sprayer, and the oil sprayer performs oil spraying treatment according to the oil spraying signal. When the system supplies power to the injector driving chip through the expected power-on time, the time of the power transmission of the injector driving chip may be different from the expected power-on time, so that the time of the actual power-on fuel injection is inconsistent with the time of the expected power-on fuel injection, and the quantity of the fuel injected by the injector is insufficient. Therefore, when the system controls the injector to inject fuel according to the expected energization time, the system further obtains the time when the injector driving chip actually supplies power to the injector, that is, obtains and determines the target energization time, and after obtaining the target energization time, step 104 is executed.
104. The system judges whether the power-on time difference value of the expected power-on time and the target power-on time is within a power-on time constraint range;
in the embodiment of the application, after the target power-on time is acquired, the system compares the target power-on time with the expected power-on time and acquires the power-on time difference through subtraction, wherein the acquired power-on time difference is a positive value when the target power-on time and the expected power-on time are compared and subtracted. The constraint range of the current injector is set by a worker according to the actual mechanical energy and is recorded into the system, so that the system compares the current injector with the current injector according to the constraint range, when the system determines that the current injector is in the constraint range of the current injector, the current injector can be determined to work in the normal range, and when the system determines that the current injector is not in the constraint range of the current injector, the step 105 is executed.
105. The system controls the fuel injector to stop the fuel injection operation.
In the embodiment of the application, when the system determines that the power-on time difference value is not in the power-on time constraint range, the system determines that the oil injection state of the current oil injector is abnormal, and then triggers the stop of the injection, so that the oil injector stops working.
Wherein, the spray stopping adopts a mode that the bottom layer turns off the spray driving pin; if the follow-up monitoring is carried out for three times, the fuel injector is recovered to be normal, and the circulation is recovered to be normal; if the monitoring is not carried out for three times continuously, the limit value fuel injector works, and the vehicle enters into a stop state. And after the next cycle is started, re-executing monitoring, judging whether the fuel injector is normal, if so, recovering from faults, and if so, stopping the fuel injector again to enter a checking state.
Furthermore, the oil injection closed-loop monitoring method of the oil injector firstly obtains oil injection quantity information of the oil injector, then determines expected power-on time according to the oil injection quantity information, controls the oil injector to perform oil injection according to the expected power-on time, determines target power-on time, and then further judges whether the power-on time difference value between the expected power-on time and the target power-on time is within a power-on time constraint range; if the actual power-on time is not within the deviation range, the fuel injector is controlled to stop the fuel injection operation, and further, the actual execution state of the fuel injector can be effectively monitored by comparing the expected power-on time with the target power-on time and judging whether the actual power-on time is within the deviation range or not, and further, the working state of the fuel injector is determined.
Referring to fig. 2, another embodiment of a method for monitoring a closed loop fuel injection of a fuel injector according to a first aspect of the present application includes:
201. the system acquires oil injection quantity information of the oil injector;
in the embodiment of the present application, step 201 is similar to step 101 described above, and will not be described herein.
202. The system determines a first energizing time and a second energizing time according to the oil injection quantity information;
in the embodiment of the application, after the system obtains the oil injection quantity information of the oil injector, the system determines a first power-on time and a second power-on time according to the oil injection quantity information, wherein the first power-on time is calculated by an application layer, and the second power-on time is calculated by a monitoring layer. The power-on time of the application layer and the monitoring layer needs to be determined according to the actual fuel injector, and is not specifically limited in this application.
203. The system determines a preset range of the power-on time;
204. the system obtains a target time difference value through the first power-on time and the second power-on time;
in this embodiment of the present application, the system obtains the target holding value according to the first power-on time and the second power-on time, and more specifically, the system first determines the time values of the first power-on time and the second power-on time, and after determining, subtracts the smaller power-on time value from the larger power-on time value, so as to obtain the target time difference. It should be noted that, for the first power-on time and the second power-on time, for example, the first power-on time is 1:20, and the second power-on time is 1:22, the target time difference obtained by subtracting the first power-on time from the second power-on time is 0: the preset range of the energization time 12 is set according to the situation, that is, 12 seconds, and is not particularly limited in the present application.
205. The system judges whether the target time difference value is within the preset range;
in this embodiment of the present application, after the system obtains the target time difference, the system compares the target time difference with a preset range of the power-on time, further determines whether the target time difference is within the preset range, if yes, executes step 206, if not, the system executes the step of obtaining the fuel injection amount information of the fuel injector again, and recalculates the first power-on time and the second power-on time according to the fuel injection amount information.
206. The system obtains the expected power-on time;
in this embodiment, when the system determines that the target time difference is within the preset range, the system automatically calculates the expected power-on time, wherein step 206 is similar to step 102 described above, and will not be described again.
207. The system controls the oil injector to spray oil according to the expected power-on time, and determines target power-on time;
in the embodiment of the present application, step 207 is similar to step 103 described above, and will not be described again here.
208. The system determines the power-on constraint range;
209. the system compares the desired power-on time with the target power-on time;
in this embodiment of the present application, after obtaining the target energization time, the system further determines an energization constraint range, where it needs to be described that the determination of the energization constraint range is set according to an actual situation, and in this application, the energization constraint range is not specifically limited, the system compares the expected energization time with the target energization time, determines whether the expected energization time is greater than the target energization time, if so, the system subtracts the expected energization time from the target energization time, and obtains an energization time difference value. If not, it is indicated that the target power-on time is greater than the expected power-on time, the system subtracts the target power-on time from the expected power-on time, and obtains a power-on time difference, and when the system obtains the power-on time difference, step 210 is executed.
210. The system judges whether the power-on time difference value is contained in the power-on constraint range;
211. the system controls the fuel injector to stop the fuel injection operation.
In this application, steps 210 to 211 are similar to steps 104 to 105 described above, and are not repeated here.
Referring to fig. 3, a second aspect of the present application provides a fuel injector fuel injection closed-loop monitoring system, including:
an acquiring unit 301, configured to acquire fuel injection amount information of a fuel injector;
a determining unit 302 for determining a desired energization time based on the fuel injection amount information;
a first control unit 303, configured to control the injector to perform fuel injection according to the expected power-on time, and determine a target power-on time;
a judging unit 304, configured to judge whether an energization time difference value between the desired energization time and the target energization time is within an energization time constraint range;
and a second control unit 305 for controlling the fuel injector to perform a stop operation when the determination unit determines that the current time difference between the desired current time and the target current time is not within the current time constraint range.
Optionally, the determining unit 302 includes:
a first determining module 3021, configured to determine a first energizing time and a second energizing time according to the fuel injection amount information;
a second determining module 3022, configured to determine a preset range of power-on time;
a first obtaining module 3023, configured to obtain a target time difference value through the first power-on time and the second power-on time;
a first determining module 3024, configured to determine whether the target time difference value is within the preset range;
a second obtaining module 3025, configured to obtain the expected power-on time when the determining module determines that the target time difference is within the preset range.
Optionally, the judging unit 304 includes:
a third determining module 3041 configured to determine the power-on constraint range;
a third obtaining module 3042, configured to obtain an energization time difference according to the desired energization time and the target energization time;
a second determining module 3043, configured to determine whether the power-on time difference is included in the power-on constraint range.
Referring to fig. 4, a third aspect of the present application provides a fuel injector fuel injection closed-loop monitoring device, including: a processor 401, a memory 402, an input/output unit 403, and a bus 404;
the processor 401 is connected to the memory 402, the input/output unit 403, and the bus 404;
the memory 402 holds a program which the processor 401 invokes to perform the method according to any one of the first aspect and the first aspect.
A fourth aspect of the present application provides a computer readable storage medium having a program stored thereon, which when executed on a computer performs the method according to any of the first and second aspects.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods 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, random access memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Claims (7)
1. The method for monitoring the fuel injection closed loop of the fuel injector is characterized by comprising the following steps of:
acquiring oil injection quantity information of an oil injector;
determining a first power-on time and a second power-on time according to the oil injection quantity information;
determining a preset range of the power-on time;
acquiring a target time difference value through the first power-on time and the second power-on time;
judging whether the target time difference value is within the preset range or not;
if yes, acquiring expected power-on time, and if not, acquiring oil injection quantity information of an oil injector;
controlling the oil injector to spray oil according to the expected power-on time, and determining target power-on time;
judging whether the power-on time difference value of the expected power-on time and the target power-on time is within a power-on time constraint range or not;
if not, controlling the fuel injector to stop the fuel injection operation.
2. The injector spray closed loop monitoring method according to claim 1, wherein said determining whether the difference in the energization time between the desired energization time and the target energization time is within an energization time constraint range comprises:
determining the power-on time constraint range;
acquiring an energization time difference value according to the expected energization time and the target energization time;
and judging whether the power-on time difference value is contained in the power-on time constraint range.
3. The injector spray closed loop monitoring method of claim 2, wherein obtaining a power-on time difference based on the desired power-on time and the target power-on time comprises:
comparing the expected power-on time with the target power-on time;
if the expected power-on time is determined to be greater than the target power-on time, subtracting the expected power-on time from the target power-on time, and acquiring the power-on time difference;
and if the target power-on time is determined to be greater than the expected power-on time, subtracting the target power-on time from the expected power-on time, and acquiring the power-on time difference.
4. A closed loop fuel injection monitoring system for a fuel injector, comprising:
the first acquisition unit is used for acquiring oil injection quantity information of the oil injector;
the first determining unit is used for determining a first energizing time and a second energizing time according to the oil injection quantity information;
a second determining unit for determining a preset range of the power-on time;
a second acquisition unit configured to acquire a target time difference value by the first energization time and the second energization time;
a first judging unit, configured to judge whether the target time difference value is within the preset range;
a third obtaining unit, configured to obtain an expected power-on time when the first judging unit determines that the target time difference is within the preset range;
a fourth obtaining unit, configured to obtain oil injection quantity information of an oil injector when the first judging unit determines that the target time difference value is not within the preset range;
the first control unit is used for controlling the oil injector to spray oil according to the expected power-on time and determining target power-on time;
a second judging unit configured to judge whether an energization time difference value between the desired energization time and the target energization time is within an energization time constraint range;
and the second control unit is used for controlling the fuel injector to perform the stop operation when the second judging unit determines that the current time difference value between the expected current time and the target current time is not in the current time constraint range.
5. The injector spray closed loop monitoring system of claim 4, wherein the determination unit comprises:
a third determining module, configured to determine the power-on time constraint range;
a third obtaining module, configured to obtain an energization time difference value according to the expected energization time and the target energization time;
and the second judging module is used for judging whether the power-on time difference value is included in the power-on time constraint range.
6. An injector injection closed loop monitoring device, comprising: a processor, a memory, an input-output unit, and a bus;
the processor is connected with the memory, the input/output unit and the bus;
the memory holds a program which the processor invokes to perform the method of any one of claims 1 to 3.
7. A computer readable storage medium having a program stored thereon, which when executed on a computer performs the method of any of claims 1 to 3.
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| CN202210640577.3A CN115199429B (en) | 2022-06-08 | 2022-06-08 | Fuel injection closed-loop monitoring method of fuel injector and related equipment |
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| CN202210640577.3A CN115199429B (en) | 2022-06-08 | 2022-06-08 | Fuel injection closed-loop monitoring method of fuel injector and related equipment |
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| CN115199429B true CN115199429B (en) | 2024-01-09 |
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| CN106065823A (en) * | 2015-04-23 | 2016-11-02 | 丰田自动车株式会社 | Fuel injection control system and fuel injection control device for internal combustion engine |
| CN110159444A (en) * | 2019-06-03 | 2019-08-23 | 广西玉柴机器股份有限公司 | Fuel injector distributive value closed loop control method |
| EP3783219A1 (en) * | 2019-08-22 | 2021-02-24 | Suzuki Motor Corporation | Abnormality diagnostic device for oil jet control valve of internal combustion engine |
| CN112855375A (en) * | 2021-02-18 | 2021-05-28 | 中国第一汽车股份有限公司 | Control method and device of oil injector, electronic equipment and storage medium |
| CN113482824A (en) * | 2021-07-28 | 2021-10-08 | 潍柴动力股份有限公司 | Detection method and device of oil injector |
| CN114151257A (en) * | 2021-11-30 | 2022-03-08 | 东风商用车有限公司 | Method, device and equipment for diagnosing fuel injection quantity of fuel injector and readable storage medium |
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