CN116818055A - Method and device for detecting fuel metering unit and electronic equipment - Google Patents

Abstract

This application discloses a method, device and electronic equipment for detecting a fuel metering unit. The method includes: when the engine is stopped, the fuel metering units are turned on sequentially according to the first preset gradient, and the fuel metering unit is monitored at each first The first actual current value at the opening; for each first opening, determine whether it is stuck based on the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening. ; If the fuel metering unit is stuck, determine the stuck interval; within the stuck interval, turn on the fuel metering units sequentially according to the second preset gradient. For each second opening, after the preset time, the second opening is obtained. the second actual current value corresponding to each second opening degree; if the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree, the vehicle is started. This solves the problem that the fuel metering unit cannot be inspected when the vehicle is not started during the operation of the diesel engine.

Description

A method and device for detecting a fuel metering unit, and electronic equipment

Technical field

The invention relates to the technical field of engine electronic control, and in particular to a detection method and device for a fuel metering unit, and electronic equipment.

Background technique

Large-bore high-pressure common rail system diesel engines have high power, large fuel consumption, and many electronic control parts, making it difficult to troubleshoot and repair in time. At the same time, diesel engines are used in various environments. Salt spray, humidity and other environments will affect the reliability of electronic control components and reduce the service life of diesel engines. If the electronic control components of a spare unit that has not been used all year round are abnormal in a humid environment, it may not be able to start up or generate electricity, causing losses to customers.

The fuel metering unit is an electronically controlled component in the diesel engine. The vehicle controller controls the current flowing through the fuel metering unit to adapt to different working conditions. At present, electronically controlled diesel engines detect whether the power supply to the fuel metering unit is abnormal by detecting the voltage of the fuel metering unit. If the rail pressure is too high and the high-pressure safety valve is opened, it proves that the fuel metering unit is faulty. The diesel engine cannot measure the fuel when the vehicle is not started during operation. Measurement units are inspected.

Contents of the invention

The purpose of this application is to provide a detection method, device and electronic equipment for a fuel metering unit. It is used to solve the problem that the fuel metering unit cannot be inspected when the vehicle is not started during the operation of the existing diesel engine.

In a first aspect, embodiments of the present application provide a method for detecting a fuel metering unit. The method includes:

If a detection command is received when the engine is in a stopped state, the fuel metering unit is opened in sequence according to the first opening degree of the first preset gradient, and the first actual current of the fuel metering unit at each first opening degree is monitored. value;

For each first opening, determine whether the fuel metering unit is stuck based on the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening;

If the fuel metering unit is stuck, the first opening degree corresponding to when the fuel metering unit is stuck is used as the target opening degree to determine the stuck interval. The stuck interval is the opening degree sequentially from the first opening degree. The opening range from the initial opening to the target opening;

Within the stuck interval, the fuel metering unit is opened sequentially in the order of the second opening degree of the second preset gradient. For each second opening degree, after the preset time of opening the fuel metering unit, all the fuel metering units are obtained. The second actual current value corresponding to the second opening degree;

If the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree, the vehicle is started;

Wherein, the second preset gradient is smaller than the first preset gradient.

In some possible embodiments, it is determined whether the fuel metering unit is stuck based on the first actual current value corresponding to the first opening degree and the pre-stored first preset current value corresponding to the first opening degree, include:

Based on the preset corresponding relationship between the opening degree and the current, determine the first preset current value corresponding to the first opening degree;

If the difference between the first actual current value and the first preset current value is greater than the current threshold, it is determined that the fuel metering unit is stuck.

In some possible embodiments, the method further includes:

If the fuel metering unit is stuck, the cumulative number of jams of the fuel metering unit is increased by 1;

When the accumulated number of jamming is greater than the jamming threshold, it is prompted to replace the fuel metering unit.

In some possible embodiments, after obtaining the second actual current value corresponding to the second opening, the method further includes:

If there is a stuck opening in the second opening, it is prompted to replace the fuel metering unit; the third actual current value corresponding to the stuck opening is different from the third preset current value corresponding to the stuck opening. The difference is greater than the current threshold.

In some possible embodiments, the openings of the first preset gradient are ordered from small to large, and the difference between each two adjacent openings is 25%; the openings of the second preset gradient are ordered from small to large. , the difference between each two adjacent openings is 5%.

In some possible embodiments, the preset time is 5 minutes.

In some possible embodiments, after monitoring the first actual current value of the fuel metering unit at each first opening, for each first opening, based on the first opening corresponding Before determining whether the fuel metering unit is stuck, the method further includes:

Determine the correction coefficient of the ambient temperature to the first actual current value, and determine the first actual current correction value by multiplying the correction coefficient and the first actual current value;

Determining whether the fuel metering unit is stuck based on the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening includes:

Based on the first actual current correction value and the first preset current value, it is determined whether the fuel metering unit is stuck.

In a second aspect, embodiments of the present application provide a device for detecting a fuel metering unit. The device includes:

The first opening module is used to open the fuel metering unit in sequence according to the first opening degree of the first preset gradient if the detection command is received when the engine is in a stopped state, and monitor whether the fuel metering unit is in each first opening. The first actual current value at

Determining whether the stuck module is configured to, for each first opening, determine the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening. Check whether the fuel metering unit is stuck;

Determining the target opening module is used to, if the fuel metering unit is stuck, use the first opening corresponding to the jammed fuel metering unit as the target opening to determine the stuck interval, and the stuck interval is from The opening range from the initial opening of the first opening sequence to the target opening;

The second opening module is used to open the fuel metering unit sequentially in the order of the second opening degree of the second preset gradient within the stuck interval. For each second opening degree, open the fuel metering unit. After the preset time, obtain the second actual current value corresponding to the second opening;

Start a vehicle module, configured to start the vehicle if the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree;

Wherein, the second preset gradient is smaller than the first preset gradient.

In a third aspect, embodiments of the present application provide an electronic device, including at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores information that can be executed by the at least one processor. Instructions, which are executed by the at least one processor, so that the at least one processor can perform the detection method of the fuel metering unit provided in the first aspect.

In a fourth aspect, embodiments of the present application provide a computer storage medium, the computer storage medium stores a computer program, and the computer program is used to cause the computer to execute the detection method of the fuel metering unit provided in the first aspect.

In order to solve the problem that the fuel metering unit cannot be inspected when the vehicle is not started during the operation of the diesel engine, the embodiment of the present application is aimed at improving fuel metering when the large-bore high-pressure common rail system diesel engine is used in areas with high humidity. The reliability of the unit ensures engine performance. Regularly detect the fuel metering unit when the engine is stopped, and judge whether the fuel metering unit is stuck through different openings and currents. If stuck, the coil moisture can be removed by forcing power on for a preset time to return to normal, thus increasing the service life of the entire machine. Reduce component failures.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings introduced below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic flow chart of a method for detecting a fuel metering unit according to an embodiment of the present application;

Figure 2 is a detailed flow chart of detecting a fuel metering unit according to an embodiment of the present application;

Figure 3 is a schematic structural diagram of a detection device for a fuel metering unit according to an embodiment of the present application;

Figure 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and in detail below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, "/" means or, for example, A/B can mean A or B; "and/or" in the text is just a way to describe the association of associated objects. Relationship means that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiment of this application, " "Plural" means two or more than two.

In the description of the embodiments of this application, unless otherwise stated, the term "plurality" refers to two or more than two, and other quantifiers are similar to it. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention. The application is not intended to limit the application, and the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In order to further explain the technical solutions provided by the embodiments of the present application, this will be described in detail below with reference to the accompanying drawings and specific implementation modes. Although the embodiments of the present application provide method operation steps as shown in the following embodiments or drawings, more or fewer operation steps may be included in the method based on routine or without creative effort. In steps where there is no necessary causal relationship logically, the execution order of these steps is not limited to the execution order provided by the embodiments of the present application. During the actual processing process or when the control device executes, the method may be executed sequentially or in parallel according to the methods shown in the embodiments or drawings.

In view of the problem in the related art that the fuel metering unit cannot be inspected when the vehicle is not started during the operation of the diesel engine. This application proposes a detection method, device, and electronic equipment for a fuel metering unit to increase the service life of the entire machine and reduce component failures.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The detection method of the fuel metering unit in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Referring to Figure 1, a schematic flow chart of a method for detecting a fuel metering unit provided by an embodiment of the present application is shown, including:

Step 101: If the detection command is received when the engine is in a stopped state, the fuel metering unit is opened in sequence according to the first opening degree of the first preset gradient, and the first actual value of the fuel metering unit at each first opening degree is monitored. current value.

Specifically, the fuel metering unit is used by the vehicle controller to control the current passing through the fuel metering unit and then control the suction force of the coil to the iron core to control the flow of fuel to adapt to different working conditions. This application provides a method for detecting a fuel metering unit when the engine is stopped. Among them, the first preset gradient refers to the preset opening gradient. As an optional implementation manner, the openings of the first preset gradient are ordered from small to large, and the difference between each two adjacent openings is 25 %, for example, the opening order of the first preset gradient is 25%, 50%, 75%, that is, the fuel metering unit is first controlled to be 25% open, then the fuel metering unit is controlled to be 50% open, and then the fuel is controlled. The metering unit is 75% open. Monitor the first actual current value corresponding to each opening of the fuel metering unit in sequence.

Step 102: For each first opening, determine whether the fuel metering unit is stuck based on the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening.

As an optional implementation, based on the preset corresponding relationship between the opening degree and the current, the first preset current value corresponding to the first opening degree is determined; if the difference between the first actual current value and the first preset current value If the value is greater than the current threshold, it is determined that the fuel metering unit is stuck.

Specifically, the corresponding relationship between the opening and the current is preset. For example, 25% opening corresponds to 2A current, that is, the first preset current value at 25% opening is 2A. First determine the difference between the first actual current value at the actual 25% opening and the first preset current value, and then determine whether the difference is within the preset current threshold. If the difference is greater than the current threshold, it proves that the fuel The metering unit is stuck. The current threshold is the fluctuation value of the current value that differs between the preset actual current and the preset current.

As an optional implementation, if the fuel metering unit is stuck, the cumulative number of jams of the fuel metering unit is increased by 1; when the accumulated number of jams is greater than the jamming threshold, it is prompted to replace the fuel metering unit.

When the fuel metering unit gets stuck during the detection process, the accumulated number of jams will be added to 1. That is, when the accumulated number of jams reaches the preset jamming threshold, it will directly prompt you to replace the fuel metering unit.

If it is judged that the fuel metering unit is not stuck, it will prompt that the vehicle can be turned on normally and the vehicle can be started. If after starting up, the oil temperature in the high-pressure oil return line of the oil pump is still high, the rail pressure rises abnormally, and the valve flushes during operation, it will be judged that the mechanical part of the fuel metering unit is stuck, and the user will be prompted to directly replace the fuel metering unit.

Step 103: If the fuel metering unit is stuck, use the corresponding first opening degree when the fuel metering unit is stuck as the target opening degree, and determine the stuck interval. The stuck interval is from the initial opening sequence of the first opening degree to the target opening degree. The opening range of the opening.

Specifically, in the above step 102, when the fuel metering unit is stuck, the corresponding first opening is 50%, then the target opening is 50%, and it is known that the initial opening is 25%, that is, the stuck interval is 25 %-50%.

Step 104: Within the stuck interval, open the fuel metering unit in sequence according to the second opening degree of the second preset gradient. For each second opening degree, obtain the second opening degree after opening the fuel metering unit for a preset time. The corresponding second actual current value.

Specifically, the second preset gradient refers to the preset opening gradient. As an optional implementation, the openings of the second preset gradient are ordered from small to large, and every two adjacent openings are With a difference of 5%, the second preset gradient is smaller than the first preset gradient. In the above step 103, for example, the stuck interval is 25%-50%, then the opening sequence of the second preset gradient is 25%, 30%, 35%, 40%, 45%, 50%. The fuel metering unit is opened sequentially according to the opening sequence of the second preset gradient to solve the jamming operation. The purpose of opening the fuel metering unit for the preset time is to force the fuel metering unit to power on for the preset time and determine whether it can be powered on after the forced power on. To solve the stuck problem, it should be noted that when setting the second preset gradient, the purpose of making the second preset gradient smaller than the first preset gradient is to more accurately solve the stuck problem. For example, if stuck is detected in step 102 The sluggish opening means that the target opening is 50%, which proves that stagnation occurs in the stagnation interval of 25%-50%. It is possible that stagnation occurs when the opening is 50%, and it is also possible that stagnation occurs when the opening is 30%. stagnation, that is, stagnation may occur at any opening in the stagnation interval, so when setting the second preset gradient, make the second preset gradient smaller than the first preset gradient, so that it can be detected more accurately At which opening degree in the stuck range does stuck occur? As an optional implementation, the preset time is 5 minutes. If the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree, the vehicle is started.

Specifically, when power is applied for five minutes, the second actual current value corresponding to the second opening degree is equal to the second preset current value, which proves that the jamming is resolved and the vehicle can be started.

As an optional implementation manner, after obtaining the second actual current value corresponding to the second opening, the method further includes: if there is a stuck opening in the second opening, prompting to replace the Fuel metering unit; the difference between the third actual current value corresponding to the stuck opening and the third preset current value corresponding to the stuck opening is greater than the current threshold.

Specifically, if the difference between the third actual current value and the third preset current value corresponding to the stuck opening is greater than the current threshold, it proves that the stuck problem has not been solved after the forced power-on for the preset time, and it is necessary to prompt for replacement. Fuel metering unit.

As an optional implementation, after monitoring the first actual current value of the fuel metering unit at each first opening degree, for each first opening degree, based on the first actual current value corresponding to the first opening degree The first preset current value corresponding to the prestored first opening degree, before determining whether the fuel metering unit is stuck, the method further includes: determining the correction coefficient of the ambient temperature to the first actual current value, through the The product of the correction coefficient and the first actual current value determines the first actual current correction value; the first actual current value corresponding to the first opening degree and the prestored first preset value corresponding to the first opening degree are Assuming a current value, determining whether the fuel metering unit is stuck includes: determining whether the fuel metering unit is stuck based on the first actual current correction value and the first preset current value.

Specifically, since the ambient temperature affects the resistance of the fuel metering unit, there will be certain differences in the current of the fuel metering unit at the same opening, which needs to be corrected. The product of the preset correction coefficient and the first actual current value is the corrected first actual current correction value. The first actual current correction value obtained after the correction is more accurate, and the judgment of whether the subsequent fuel metering unit is stuck is more accurate.

Step 105: If the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree, start the vehicle.

Specifically, when the second actual current value corresponding to each second opening degree in the stuck interval is equal to the second preset current value corresponding to the prestored second opening degree, it is proved that after forced energization for a preset time, The jamming problem of the fuel metering unit was solved, and the vehicle started to start.

This application is aimed at improving the reliability of the fuel metering unit and ensuring engine performance when the large-bore high-pressure common rail system diesel engine is used in areas with high humidity. Regularly detect the fuel metering unit when the engine is stopped, and judge whether the fuel metering unit is stuck through different openings and currents. If stuck, the coil moisture can be removed by forcing power on for a preset time to return to normal, thus increasing the service life of the entire machine. Reduce component failures.

Refer to Figure 2, which is a detailed flow chart of the detection of the fuel metering unit in this application.

Step 201: If the detection command is received when the engine is in a stopped state, the fuel metering unit is opened in sequence according to the first opening degree of the first preset gradient, and the first actual value of the fuel metering unit at each first opening degree is monitored. current value.

Step 202: Determine the correction coefficient of the ambient temperature to the first actual current value, and determine the first actual current correction value by multiplying the correction coefficient and the first actual current value.

Step 203: Based on the preset corresponding relationship between the opening degree and the current, determine the first preset current value corresponding to the first opening degree.

Step 204: Determine whether the difference between the first actual current correction value and the first preset current value is greater than the current threshold. If yes, execute step 205. If not, execute step 209.

Step 205: If the fuel metering unit is stuck, use the first opening corresponding to when the fuel metering unit is stuck as the target opening, determine the stuck interval, and add 1 to the cumulative number of jams of the fuel metering unit.

Step 206: Determine whether the accumulated number of stuck times is greater than the stuck threshold. If so, execute step 210. If not, execute step 207.

Step 207: Within the stuck interval, open the fuel metering unit in sequence according to the second opening degree of the second preset gradient. For each second opening degree, obtain the second opening degree after opening the fuel metering unit for a preset time. The corresponding second actual current value.

Step 208: Determine whether there is a stuck opening in the second opening. If yes, execute step 210. If not, execute step 209.

Step 209: Start the vehicle.

Step 210: Prompt to replace the fuel metering unit.

Example 2

Based on the same inventive concept, this application also provides a detection device for a fuel metering unit, as shown in Figure 3. The device includes:

The first opening module 301 is used to open the fuel metering unit in sequence according to the first opening degree of the first preset gradient if the detection command is received when the engine is in a shutdown state, and monitor the fuel metering unit at each first opening. The first actual current value at opening;

The determining module 302 is configured to determine, for each first opening degree, based on the first actual current value corresponding to the first opening degree and the pre-stored first preset current value corresponding to the first opening degree. Whether the fuel metering unit is stuck;

The target opening degree determining module 303 is used to, if the fuel metering unit is stuck, use the first opening degree corresponding to when the fuel metering unit is stuck as the target opening degree, and determine the stuck interval, where the stuck interval is The opening range from the initial opening of the first opening sequence to the target opening;

The second opening module 304 is configured to sequentially open the fuel metering unit in the order of the second opening degree of the second preset gradient within the stuck interval. For each second opening degree, the fuel metering unit is opened after turning on the fuel metering unit. After the unit presets the time, the second actual current value corresponding to the second opening is obtained;

Start the vehicle module 305, configured to start the vehicle if the second actual current value corresponding to each second opening degree is equal to the prestored second preset current value corresponding to the second opening degree;

Wherein, the second preset gradient is smaller than the first preset gradient.

Optionally, the determining module 302 is specifically configured to determine the first preset current value corresponding to the first opening based on the preset correspondence between the opening and the current; if the first actual current value If the difference from the first preset current value is greater than the current threshold, it is determined that the fuel metering unit is stuck.

Optionally, the module 302 for determining whether the fuel metering unit is stuck is also configured to, if the fuel metering unit is stuck, add 1 to the cumulative number of jams of the fuel metering unit; when the cumulative number of jams is greater than the jamming threshold, prompt Replace the fuel metering unit.

Optionally, the second opening module 304 is also configured to prompt the replacement of the fuel metering unit if there is a stuck opening in the second opening; the third actual current value corresponding to the stuck opening is the same as the stuck opening. The difference between the third preset current values corresponding to the hysteresis degree is greater than the current threshold.

Optionally, the openings of the first preset gradient are sorted from small to large, and every two adjacent openings differ by 25%; the openings of the second preset gradient are sorted from small to large, and every two adjacent openings are The difference in opening is 5%.

Optionally, the preset time is 5 minutes.

Optionally, the determining module 302 is also used to determine the correction coefficient of the ambient temperature to the first actual current value, and determine the first actual current correction value by multiplying the correction coefficient and the first actual current value. , based on the first actual current correction value and the first preset current value, determine whether the fuel metering unit is stuck.

After introducing the detection method and device for the fuel metering unit according to the exemplary embodiment of the present application, next, an electronic device according to another exemplary embodiment of the present application is introduced.

Those skilled in the art can understand that various aspects of the present application can be implemented as systems, methods or program products. Therefore, various aspects of the present application can be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, which may be collectively referred to herein as "Circuits", "modules" or "systems".

In some possible implementations, the electronic device according to the present application may include at least one processor and at least one memory. The memory stores program code. When the program code is executed by the processor, it causes the processor to perform the above-described steps in the detection method of the fuel metering unit according to various exemplary embodiments of the present application.

The electronic device 130 according to this embodiment of the present application, that is, the above-mentioned detection device for the fuel metering unit, is described below with reference to FIG. 4 . The electronic device 130 shown in FIG. 4 is only an example and should not bring any limitations to the functions and scope of use of the embodiments of the present application.

As shown in FIG. 4 , the electronic device 130 is in the form of a general electronic device. The components of the electronic device 130 may include, but are not limited to: the above-mentioned at least one processor 131, the above-mentioned at least one memory 132, and a bus 133 connecting different system components (including the memory 132 and the processor 131).

Bus 133 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus structures.

Memory 132 may include readable media in the form of volatile memory, such as random access memory (RAM) 1321 and/or cache memory 1322 , and may further include read only memory (ROM) 1323 .

Memory 132 may also include a program/utility 1325 having a set of (at least one) program modules 1324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, which Each of the examples, or some combination thereof, may include the implementation of a network environment.

Electronic device 130 may also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), may also communicate with one or more devices that enable a user to interact with electronic device 130, and/or with one or more devices that enable the electronic device 130 to 130 Any device (eg, router, modem, etc.) capable of communicating with one or more other electronic devices. This communication may occur through input/output (I/O) interface 135. Furthermore, the electronic device 130 may also communicate with one or more networks (eg, a local area network (LAN), a wide area network (WAN), and/or a public network, such as the Internet) through the network adapter 136 . As shown, network adapter 136 communicates with other modules for electronic device 130 via bus 133 . It should be understood that, although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives And data backup storage system, etc.

In some possible implementations, various aspects of the detection method for a fuel metering unit provided by this application can also be implemented in the form of a program product, which includes program code. When the program product is run on a computer device, The program code is used to cause the computer device to execute the above-described steps of a method for detecting a fuel metering unit according to various exemplary embodiments of the present application.

The Program Product may take the form of one or more readable media in any combination. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: electrical connection with one or more conductors, portable disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above.

The program product for monitoring according to the embodiment of the present application may adopt a portable compact disk read-only memory (CD-ROM) and include the program code, and may be run on an electronic device. However, the program product of the present application is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus or device.

The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying readable program code therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium may also be any readable medium other than a readable storage medium that can send, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical cable, RF, etc., or any suitable combination of the foregoing.

The program code for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., as well as conventional procedural programming. Language—such as "C" or a similar programming language. The program code may execute entirely on the user's electronic device, partly on the user's electronic device, as a stand-alone software package, partly on the user's electronic device and partly on a remote electronic device, or entirely on the remote electronic device or service Executed on the terminal. In situations involving remote electronic devices, the remote electronic devices may be connected to the user electronic device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external electronic device (e.g., using an Internet service). provider to connect via the Internet).

It should be noted that although several units or sub-units of the device are mentioned in the above detailed description, this division is only exemplary and not mandatory. In fact, according to embodiments of the present application, the features and functions of two or more units described above may be embodied in one unit. Conversely, the features and functions of a unit described above may be further divided into embodiments of a plurality of units.

Furthermore, although the operations of the methods of the present application are depicted in a particular order in the drawings, this does not require or imply that the operations must be performed in that particular order, or that all of the illustrated operations must be performed to achieve desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step for execution, and/or one step may be broken down into multiple steps for execution.

Those skilled in the art will understand that embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application 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, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each process and/or block in the flowchart illustrations and block diagrams, and combinations of processes and blocks in the flowchart illustrations and 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 data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce a use A device for realizing the functions specified in a process or processes in a flowchart and a block or blocks in a block diagram.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions The device implements the functions specified in a process or processes in the flowchart and in a block or blocks in the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart and a block or blocks of a block diagram.

Although the preferred embodiments of the present application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once the basic inventive concepts are understood. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this application.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (10)

1. A method of detecting a fuel metering unit, the method comprising:

if a detection instruction is received when the engine is in a stop state, sequentially starting the fuel metering units according to a first opening sequence of a first preset gradient, and monitoring a first actual current value when the fuel metering units are in each first opening;

for each first opening, determining whether the fuel metering unit is stuck or not based on a first actual current value corresponding to the first opening and a pre-stored first preset current value corresponding to the first opening;

if the fuel metering unit is stuck, taking a first opening corresponding to the stuck state of the fuel metering unit as a target opening, and determining a stuck section, wherein the stuck section is an opening section from an initial opening to the target opening in sequence of the first opening;

sequentially starting the fuel metering units according to a second opening sequence of a second preset gradient in the clamping stagnation section, and acquiring a second actual current value corresponding to each second opening after starting the fuel metering units for preset time aiming at each second opening;

if the second actual current value corresponding to each second opening is equal to a second preset current value corresponding to the pre-stored second opening, starting the vehicle;

wherein the second preset gradient is smaller than the first preset gradient.

2. The method of claim 1, wherein the determining whether the fuel metering unit is stuck based on a first actual current value corresponding to the first opening and a pre-stored first preset current value corresponding to the first opening comprises:

determining a first preset current value corresponding to the first opening based on a corresponding relation between the preset opening and the current;

and if the difference value between the first actual current value and the first preset current value is larger than a current threshold value, determining that the fuel metering unit is stuck.

3. The method according to claim 1, wherein the method further comprises:

if the fuel metering unit is stuck, adding 1 to the number of times of stuck fuel metering units;

and when the accumulated clamping times are greater than a clamping threshold value, prompting to replace the fuel metering unit.

4. The method according to claim 1, wherein after the obtaining the second actual current value corresponding to the second opening degree, the method further includes:

if the second opening has a clamping stagnation opening, prompting to replace the fuel metering unit; and the difference value between the third actual current value corresponding to the clamping stagnation opening and the third preset current value corresponding to the clamping stagnation opening is larger than the current threshold.

5. The method of claim 1, wherein the first preset gradient has openings ordered from small to large, each two adjacent openings differing by 25%; the opening degrees of the second preset gradient are ordered from small to large, and every two adjacent opening degrees are different by 5%.

6. The method of claim 1, wherein the predetermined time is 5 minutes.

7. The method of claim 1, wherein after the monitoring the first actual current value of the fuel metering unit at each first opening, the determining, for each first opening, whether the fuel metering unit is stuck before the first actual current value corresponding to the first opening is based on a first preset current value corresponding to the first opening that is pre-stored, the method further comprising:

determining a correction coefficient of the ambient temperature to the first actual current value, and determining a first actual current correction value through the product of the correction coefficient and the first actual current value;

the determining whether the fuel metering unit is stuck based on the first actual current value corresponding to the first opening and the pre-stored first preset current value corresponding to the first opening comprises:

and determining whether the fuel metering unit is stuck or not based on the first actual current correction value and the first preset current value.

8. A device for detecting a fuel metering unit, the device comprising:

a first opening module: the method comprises the steps that if a detection instruction is received when an engine is in a stop state, a fuel metering unit is sequentially started according to a first opening sequence of a first preset gradient, and a first actual current value of the fuel metering unit when the fuel metering unit is in each first opening is monitored;

the clamping stagnation determining module is used for determining whether the fuel metering unit is clamped or not according to each first opening degree and based on a first actual current value corresponding to the first opening degree and a pre-stored first preset current value corresponding to the first opening degree;

a target opening determining module, configured to determine a stuck section by using a first opening corresponding to the stuck fuel metering unit as a target opening if the fuel metering unit is stuck, where the stuck section is an opening section from an initial opening to the target opening in the order of the first opening;

and a second opening module: the fuel metering unit is used for sequentially starting the fuel metering units in the clamping stagnation section according to a second opening sequence of a second preset gradient, and acquiring a second actual current value corresponding to each second opening after starting the fuel metering unit for preset time for each second opening;

the vehicle starting module is used for starting the vehicle if the second actual current value corresponding to each second opening is equal to a pre-stored second preset current value corresponding to the second opening;

wherein the second preset gradient is smaller than the first preset gradient.

9. An electronic device comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.

10. A computer storage medium, characterized in that the computer storage medium stores a computer program for causing a computer to perform the method according to any one of claims 1-7.