Method, device, vehicle, medium and product for adjusting the ignition position of a spark plug

Abstract

The application relates to the technical field of vehicles, in particular to a method and device for adjusting the ignition position of a spark plug, a vehicle, a medium and a product, wherein the method comprises the following steps: acquiring the actual pressure in an engine and the knock amplitude; if it is determined according to the actual pressure in the engine and the knock amplitude that the engine meets abnormal conditions, then determining the target current of the spark plug according to the fuel pressure and the air-fuel ratio; and adjusting the ignition position of the spark plug according to the target current. Therefore, the method can solve the problem that the related art cannot realize dynamic adjustment of the ignition position by changing the ignition position through disassembly and replacement of the spark plug.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, device, vehicle, medium, and product for adjusting the ignition position of a spark plug. Background Technology

[0002] Hydrogen internal combustion engines, as an important development direction in the field of clean energy, are characterized by zero carbon emissions, high efficiency, and low cost. Especially with the application of direct injection technology, hydrogen internal combustion engines can not only effectively suppress backfire but also significantly improve power density. However, the low ignition energy requirement and rapid combustion speed of hydrogen make hydrogen engines prone to pre-ignition and knocking problems. Therefore, the engine cylinder has more stringent requirements for ignition timing, ignition energy, and ignition position to ensure a stable and efficient combustion process.

[0003] In related technologies, the spark plug design fixes the ignition position after installation, limiting the engine's ability to adjust the ignition position under different operating conditions. This makes it difficult to effectively address pre-ignition and knocking issues in hydrogen engines. Changing the ignition position typically involves removing and replacing the spark plug, which is inconvenient and does not allow for real-time optimization. Summary of the Invention

[0004] This application provides a method, device, vehicle, medium, and product for adjusting the ignition position of a spark plug, in order to solve the problem that related technologies cannot achieve dynamic adjustment of the ignition position by changing the ignition position through disassembly and replacement of spark plugs.

[0005] The first aspect of this application provides a method for adjusting the ignition position of a spark plug, comprising the following steps: obtaining the actual pressure and knock amplitude inside the engine; if the engine is determined to meet abnormal conditions based on the actual pressure and knock amplitude inside the engine, determining the target current of the spark plug based on the fuel pressure and air-fuel ratio; and adjusting the ignition position of the spark plug based on the target current.

[0006] Optionally, the target current of the spark plug is determined based on the fuel pressure and air-fuel ratio, including: obtaining the mapping relationship between the air-fuel ratio, fuel pressure and target current; and determining the target current through the spark plug based on the mapping relationship, air-fuel ratio and fuel pressure.

[0007] Optionally, adjusting the ignition position of the spark plug according to the target current includes: determining the target position of the spark plug electrode according to the target current; identifying the target distance and target direction between the current position of the spark plug electrode and the target position; and controlling the spark plug electrode to move to the target position according to the target distance and target direction.

[0008] Optionally, the abnormal condition is that the actual pressure is greater than the preset pressure threshold and / or the number of times the knock amplitude is greater than the preset amplitude is greater than the preset number of times.

[0009] Optionally, before determining the target current of the spark plug based on the fuel pressure and air-fuel ratio, the method further includes: obtaining the fuel injection quantity and oxygen content of the engine; and calculating the air-fuel ratio based on the fuel injection quantity and oxygen content.

[0010] A second aspect of this application provides a spark plug ignition position adjustment device, comprising: an acquisition module for acquiring the actual pressure and knock amplitude inside the engine; a determination module for determining a target current for the spark plug based on fuel pressure and air-fuel ratio if the engine is determined to meet abnormal conditions based on the actual pressure and knock amplitude inside the engine; and an adjustment module for adjusting the ignition position of the spark plug based on the target current.

[0011] Optionally, the determining module is further used to obtain the mapping relationship between the air-fuel ratio, fuel pressure, and target current; and to determine the target current through the spark plug based on the mapping relationship, air-fuel ratio, and fuel pressure.

[0012] Optionally, the adjustment module is further configured to determine the target position of the spark plug electrode based on the target current; identify the target distance and target direction between the current position of the spark plug electrode and the target position; and control the spark plug electrode to move to the target position based on the target distance and target direction.

[0013] Optionally, the abnormal condition is that the actual pressure is greater than the preset pressure threshold and / or the number of times the knock amplitude is greater than the preset amplitude is greater than the preset number of times.

[0014] Optionally, the spark plug ignition position adjustment device further includes: a calculation module for acquiring the engine's fuel injection quantity and oxygen content before determining the target current of the spark plug based on fuel pressure and air-fuel ratio; and calculating the air-fuel ratio based on the fuel injection quantity and oxygen content.

[0015] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the program to implement the spark plug ignition position adjustment method as described in the above embodiments.

[0016] A fourth aspect of this application provides a computer-readable storage medium having a computer program or instructions stored thereon, which, when executed, are used to implement the spark plug ignition position adjustment method as described in the above embodiments.

[0017] A fifth aspect of this application provides a computer program product, including: a computer program or instructions, which, when executed, implement the spark plug ignition position adjustment method as described in the above embodiments.

[0018] Therefore, this application has at least the following beneficial effects:

[0019] This application's embodiments can dynamically change the spark plug ignition position by controlling the current inside the spark plug based on fuel pressure and air-fuel ratio when the engine meets abnormal conditions according to the actual internal pressure and knock amplitude. This ensures that the engine maintains a high-efficiency, stable, and safe operating state under various operating conditions. Therefore, it solves the problem in related technologies where changing the ignition position by removing and replacing spark plugs cannot achieve dynamic adjustment of the ignition position.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 This is a flowchart of a spark plug ignition position adjustment method according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the spark plug ignition position adjustment principle according to an embodiment of this application;

[0024] Figure 3 This is a block diagram of a spark plug ignition position adjustment device provided according to an embodiment of this application;

[0025] Figure 4 This is a structural schematic diagram of a vehicle according to an embodiment of this application. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0027] The following description, with reference to the accompanying drawings, outlines a method, apparatus, vehicle, medium, and product for adjusting the spark plug ignition position according to embodiments of this application. Addressing the problems mentioned in the background section, this application provides a method for adjusting the spark plug ignition position. In this method, when the engine meets abnormal conditions based on the actual internal pressure and knock amplitude, the current inside the spark plug is controlled according to the fuel pressure and air-fuel ratio to achieve dynamic changes in the spark plug ignition position. This ensures that the engine maintains efficient, stable, and safe operation under various operating conditions. Therefore, this solves the problem in related technologies where changing the ignition position by removing and replacing spark plugs fails to achieve dynamic adjustment of the ignition position.

[0028] Specifically, Figure 1 This is a schematic flowchart illustrating a method for adjusting the ignition position of a spark plug, as provided in an embodiment of this application.

[0029] like Figure 1 As shown, the method for adjusting the spark plug ignition position includes the following steps:

[0030] In step S101, the actual pressure and knock amplitude inside the engine are obtained.

[0031] It is understood that the embodiments of this application can detect the actual pressure and knock amplitude inside the engine through sensors on the engine. For example, the cylinder pressure sensor is used to monitor the actual pressure inside the engine cylinder, and is usually installed on the cylinder head to directly measure the pressure of the gas in the combustion chamber. The cylinder pressure sensor converts the detected pressure changes into electrical signals and sends them to the ECU (Engine Control Unit), which serves as an important basis for the ECU to adjust the ignition position to prevent further knocking. The knock sensor is used to monitor whether the engine is knocking, and is usually installed on the engine block or cylinder head. It can sense the vibration caused by knocking. The knock sensor will detect abnormal vibration amplitude or knocking sound, convert it into electrical signals and send them to the ECU. The ECU determines the knock amplitude based on the signal strength and frequency. Therefore, the combined use of the knock sensor and the cylinder pressure sensor in the embodiments of this application allows the ECU to more comprehensively monitor the engine's operating status and adjust the ignition timing and other parameters in a timely manner.

[0032] In step S102, if the engine meets the abnormal conditions based on the actual pressure inside the engine and the knock amplitude, the target current of the spark plug is determined based on the fuel pressure and air-fuel ratio.

[0033] Among them, abnormal conditions are when the actual pressure is greater than the preset pressure threshold and / or the number of times the knock amplitude is greater than the preset amplitude is greater than the preset number of times.

[0034] Specifically, this embodiment of the application can continuously monitor the actual pressure and knock amplitude inside the engine. If the pressure exceeds a preset pressure threshold, it may indicate an abnormal pressure in the combustion chamber. If the knock amplitude exceeds a preset amplitude threshold, it can be determined that an abnormality has occurred. When the cumulative number of abnormalities exceeds a preset number, this embodiment of the application determines that the engine is operating in an abnormal state, and the ignition position needs to be adjusted. The preset pressure threshold, preset amplitude, and preset number of times can be set according to the actual situation and are not specifically limited.

[0035] Furthermore, embodiments of this application can acquire the engine's fuel injection quantity and oxygen content; the air-fuel ratio is calculated based on the fuel injection quantity and oxygen content, wherein the oxygen content can be detected by an oxygen sensor installed on the engine exhaust pipe, the oxygen content is converted into an electrical signal and sent to the ECU, and the ECU adjusts the injection quantity of the injectors based on these signals. Hydrogen pressure can also be detected by a rail pressure sensor installed on the hydrogen rail, as pressure is a key factor affecting the hydrogen gas stream shape, and different gas stream shapes require different ignition positions.

[0036] In one embodiment of this application, determining the target current of the spark plug based on fuel pressure and air-fuel ratio includes: obtaining a mapping relationship between air-fuel ratio, fuel pressure, and target current; and determining the target current through the spark plug based on the mapping relationship, air-fuel ratio, and fuel pressure.

[0037] This application embodiment can adjust the ignition position by controlling the current of the spark plug ignition position. By detecting pre-ignition and knocking in the cylinder using a knock sensor and a cylinder pressure sensor, the optimal air-fuel ratio, hydrogen pressure, and target current for optimal pre-ignition and knocking are obtained, thus pre-calibrating the mapping relationship of ignition positions under different operating conditions. During actual engine operation, this application embodiment can determine the corresponding target current under a given operating condition based on the mapping relationship of ignition positions under different operating conditions, as well as the obtained air-fuel ratio and hydrogen pressure.

[0038] In step S103, the ignition position of the spark plug is adjusted according to the target current.

[0039] In one embodiment of this application, adjusting the ignition position of the spark plug according to the target current includes: determining the target position of the spark plug electrode according to the target current; identifying the target distance and target direction between the current position of the spark plug electrode and the target position; and controlling the spark plug electrode to move to the target position according to the target distance and target direction.

[0040] In this embodiment, the spark plug integrates a coil, a spring, and an iron core. The coil is typically a conductive coil wound around the iron core, which generates a magnetic field when current flows through it. The spring provides a counterforce, returning the electrodes to their initial position when the electromagnetic force disappears. The iron core, located inside the coil, enhances the magnetic field strength and improves the electromagnetic effect.

[0041] Specifically, such as Figure 2 As shown, this embodiment detects pre-ignition and knocking in the cylinder using a knock sensor and a cylinder pressure sensor. When the abnormal conditions described in the above embodiment are met, the fuel pressure and air-fuel ratio are determined based on the oxygen sensor and rail pressure sensor, thereby obtaining the target current for the spark plug. This embodiment can control the current passing through the coil to the target current, thereby generating a corresponding electromagnetic force. This electromagnetic force overcomes the spring force, pushing the electrode connected to the iron core upwards by a certain distance, thus controlling the position of the spark plug electrode and achieving precise control of the ignition position.

[0042] The spark plug ignition position adjustment method proposed in this application, when determining that the engine meets abnormal conditions based on the actual internal pressure and knock amplitude, controls the current inside the spark plug according to the fuel pressure and air-fuel ratio to achieve dynamic changes in the spark plug ignition position. This ensures that the engine maintains a high-efficiency, stable, and safe operating state under various operating conditions. Therefore, it solves the problem in related technologies where changing the ignition position by removing and replacing spark plugs cannot achieve dynamic adjustment of the ignition position.

[0043] Next, referring to the accompanying drawings, an adjustment device for the spark plug ignition position according to an embodiment of this application is described.

[0044] Figure 3 This is a block diagram of a spark plug ignition position adjustment device according to an embodiment of this application.

[0045] like Figure 3 As shown, the spark plug ignition position adjustment device 10 includes: an acquisition module 100, a determination module 200, and an adjustment module 300.

[0046] The acquisition module 100 is used to acquire the actual pressure and knock amplitude inside the engine; the determination module 200 is used to determine the target current of the spark plug based on the fuel pressure and air-fuel ratio if the engine meets the abnormal conditions based on the actual pressure and knock amplitude inside the engine; and the adjustment module 300 is used to adjust the ignition position of the spark plug based on the target current.

[0047] In one embodiment of this application, the determining module 200 is further configured to obtain the mapping relationship between air-fuel ratio, fuel pressure and target current; and determine the target current through the spark plug based on the mapping relationship, air-fuel ratio and fuel pressure.

[0048] In one embodiment of this application, the adjustment module 300 is further configured to determine the target position of the spark plug electrode based on the target current; identify the target distance and target direction between the current position of the spark plug electrode and the target position; and control the spark plug electrode to move to the target position based on the target distance and target direction.

[0049] In one embodiment of this application, the abnormal condition is that the actual pressure is greater than a preset pressure threshold and / or the number of times the knock amplitude is greater than a preset amplitude is greater than a preset number.

[0050] In one embodiment of this application, the spark plug ignition position adjustment device 10 further includes: a calculation module, used to obtain the fuel injection quantity and oxygen content of the engine before determining the target current of the spark plug based on the fuel pressure and air-fuel ratio; and to calculate the air-fuel ratio based on the fuel injection quantity and oxygen content.

[0051] It should be noted that the explanation of the above-described method for adjusting the spark plug ignition position also applies to the spark plug ignition position adjustment device of this embodiment, and will not be repeated here.

[0052] The spark plug ignition position adjustment device proposed in this application, when determining that the engine meets abnormal conditions based on the actual internal pressure and knock amplitude, controls the current inside the spark plug according to the fuel pressure and air-fuel ratio to achieve dynamic changes in the spark plug ignition position. This ensures that the engine maintains a high-efficiency, stable, and safe operating state under various operating conditions. Therefore, it solves the problem in related technologies where changing the ignition position by removing and replacing spark plugs fails to achieve dynamic adjustment of the ignition position.

[0053] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include:

[0054] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0055] When the processor 402 executes the program, it implements the spark plug ignition position adjustment method provided in the above embodiments.

[0056] Furthermore, the vehicle also includes:

[0057] Communication interface 403 is used for communication between memory 401 and processor 402.

[0058] The memory 401 is used to store computer programs that can run on the processor 402.

[0059] The memory 401 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0060] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0061] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0062] Processor 402 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of this application.

[0063] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method for adjusting the spark plug ignition position.

[0064] This application also provides a computer program product, including: a computer program or instructions, which, when executed, implement the above-described method for adjusting the spark plug ignition position.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0068] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0069] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0070] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for adjusting the ignition position of a spark plug, characterized in that, Includes the following steps: To obtain the actual internal pressure and knock amplitude of the engine; If the engine is determined to meet abnormal conditions based on the actual internal pressure and the knock amplitude, then the target current of the spark plug is determined based on the fuel pressure and air-fuel ratio, wherein the abnormal conditions are that the actual pressure is greater than a preset pressure threshold and / or the number of times the knock amplitude is greater than a preset amplitude is greater than a preset number; the step of determining the target current of the spark plug based on the fuel pressure and air-fuel ratio includes obtaining the mapping relationship between the air-fuel ratio, fuel pressure and target current, and determining the target current through the spark plug based on the mapping relationship, the air-fuel ratio and the fuel pressure; Adjust the ignition position of the spark plug according to the target current.

2. The method for adjusting the spark plug ignition position according to claim 1, characterized in that, The step of adjusting the ignition position of the spark plug according to the target current includes: Determine the target position of the spark plug electrode based on the target current; Identify the target distance and target direction between the current position of the spark plug electrode and the target position; The spark plug electrode is controlled to move to the target position based on the target distance and target direction.

3. The method for adjusting the spark plug ignition position according to claim 1, characterized in that, Before determining the target current of the spark plug based on fuel pressure and air-fuel ratio, the process also includes: Obtain the fuel injection quantity and oxygen content of the engine; The air-fuel ratio is calculated based on the fuel injection quantity and the oxygen content.

4. A spark plug ignition position adjustment device, characterized in that, include: The acquisition module is used to acquire the actual pressure and knock amplitude inside the engine; A determination module is configured to, if the engine is determined to meet abnormal conditions based on the actual internal pressure and the knock amplitude, determine the target current of the spark plug based on the fuel pressure and air-fuel ratio, wherein the abnormal conditions are that the actual pressure is greater than a preset pressure threshold and / or the number of times the knock amplitude is greater than a preset amplitude is greater than a preset number; the determination of the target current of the spark plug based on the fuel pressure and air-fuel ratio includes obtaining a mapping relationship between the air-fuel ratio, fuel pressure, and target current, and determining the target current through the spark plug based on the mapping relationship, the air-fuel ratio, and the fuel pressure; An adjustment module is used to adjust the ignition position of the spark plug according to the target current.

5. The spark plug ignition position adjustment device according to claim 4, characterized in that, The adjustment module is further used for: Get the current position of the spark plug electrode; Adjust the current position of the spark plug electrode upward by a preset distance according to the target current until the actual pressure is within the preset range.

6. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the spark plug ignition position adjustment method as described in any one of claims 1-3.

7. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, they implement the spark plug ignition position adjustment method according to any one of claims 1-3.

8. A computer program product comprising: A computer program or instruction, characterized in that, when executed, the computer program or instruction implements the spark plug ignition position adjustment method according to any one of claims 1-3.

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