Vehicle engine low-temperature starting method and device, vehicle and medium

Abstract

The application provides a vehicle engine low-temperature starting method and device, a vehicle and a medium. The method is applied to the field of engine control and includes the following steps: determining the water temperature of an engine and a first magnetizing time after starting the vehicle; the first magnetizing time represents the magnetizing time required for starting the engine in a normal state; correcting the first magnetizing time to determine a second magnetizing time when the water temperature is determined to be less than or equal to a set temperature; the second magnetizing time is greater than the first magnetizing time; and igniting the engine based on the second magnetizing time to realize low-temperature starting of the engine. The method can increase the magnetizing time and thus increase the ignition capacity of a spark plug in a low-temperature environment, thereby ensuring successful starting of the engine in a low-temperature environment and reducing the risk of carbon deposition of the spark plug.

Description

Technical Field

[0001] This application relates to the field of engine control, and more specifically, to a method, apparatus, vehicle, and medium for low-temperature starting of a vehicle engine in the field of engine control. Background Technology

[0002] In related technologies, when starting a direct injection gasoline engine in a low-temperature environment, the atomization and evaporation of gasoline are not ideal, and a good air-fuel mixture cannot be formed, resulting in poor combustion in the engine cylinder. This leads to a large amount of carbon deposits adhering to the spark plug surface, which in turn causes the engine to fail to start or misfire after starting. Summary of the Invention

[0003] This application provides a method, apparatus, vehicle, and medium for starting a vehicle engine at low temperatures. The method can increase the ignition capability of spark plugs in low-temperature environments, reduce the risk of spark plug carbon buildup, and ensure successful engine starting in low-temperature environments.

[0004] In a first aspect, a method for low-temperature starting of a vehicle engine is provided. The method includes: after the vehicle is started, determining the engine coolant temperature and a first magnetization time; the first magnetization time characterizes the magnetization time required to start the engine under normal conditions; if it is determined that the coolant temperature is less than or equal to a set temperature, correcting the first magnetization time to determine a second magnetization time; the second magnetization time is greater than the first magnetization time; and igniting the engine based on the second magnetization time to achieve low-temperature starting of the engine.

[0005] The above technical solution can improve the ignition capability of spark plugs in low-temperature environments by adjusting the required magnetization time of the engine and increasing the magnetization time, thereby ensuring successful engine starting in low-temperature environments and reducing the risk of spark plug carbon buildup.

[0006] In conjunction with the first aspect, in some possible implementations, a correction coefficient is determined in a first setting table based on the engine's water temperature and the engine's charging voltage; the first setting table is used to record the correction coefficients corresponding to different water temperatures and charging voltages; and the second magnetization time is determined based on the first magnetization time and the correction coefficient.

[0007] Combining the first aspect and the above implementation methods, in some possible implementation methods, the product of the first magnetization time and the correction coefficient is determined as the second magnetization time.

[0008] Combining the first aspect and the above implementation methods, in some possible implementation methods, the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures is determined; based on the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures, the first setting table is formulated.

[0009] In combination with the first aspect and the above implementation, in some possible implementations, the charging voltage of the engine and the real-time speed of the engine are obtained; the first magnetization time is determined in a second setting table based on the charging voltage of the engine and the real-time speed of the engine; the second setting table is used to record the magnetization time corresponding to different charging voltages and real-time speeds.

[0010] In combination with the first aspect and the above implementation methods, in some possible implementation methods, when it is determined that the water temperature is greater than the set temperature, the engine is ignited based on the first magnetization time to start the engine.

[0011] The above technical solution enables the engine to be ignited at the first magnetization time when the vehicle is at normal temperature, thereby reducing the vehicle's battery usage and engine fuel consumption.

[0012] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the ignition coil of the engine is energized and magnetized based on the second magnetization time.

[0013] Secondly, a vehicle engine cold start device is provided, the device comprising:

[0014] The first determining module is used to determine the engine coolant temperature and the first magnetization time after the vehicle is started; the first magnetization time represents the magnetization time required to start the engine under normal conditions.

[0015] The second determining module is used to correct the first magnetization time and determine a second magnetization time when the water temperature is determined to be less than or equal to a set temperature; the second magnetization time is greater than the first magnetization time.

[0016] An ignition module is used to ignite the engine based on the second magnetization time to achieve low-temperature engine start-up.

[0017] Thirdly, a vehicle is provided, including a memory and a processor, the memory storing a computer program, characterized in that the processor executes the computer program to implement the method of the first aspect or any possible implementation thereof.

[0018] Fourthly, a computer program product is provided, comprising: computer program code, which, when run on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0019] Fifthly, a computer-readable storage medium is provided that stores computer program code, which, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof. Attached Figure Description

[0020] Figure 1 This is a schematic flowchart illustrating a method for starting a vehicle engine at low temperatures, provided in one embodiment of this application.

[0021] Figure 2 This is a schematic flowchart of a vehicle engine low-temperature starting method provided in another embodiment of this application;

[0022] Figure 3 This is a schematic flowchart of a vehicle engine low-temperature starting method provided in another embodiment of this application;

[0023] Figure 4 This is a schematic flowchart of a vehicle engine low-temperature starting method provided in another embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of a vehicle engine low-temperature starting device provided in one embodiment of this application. Detailed Implementation

[0025] The technical solutions in this application will be clearly and thoroughly described 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 merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0026] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] Traditional direct-injection gasoline engines, when starting in low-temperature environments (low water temperature and low intake air), suffer from poor gasoline atomization and evaporation, failing to form a proper air-fuel mixture. This leads to inefficient combustion within the engine cylinders, resulting in significant carbon buildup on the spark plug surface. As carbon deposits accumulate, the ignition coil's magnetization energy decreases, reducing the spark plug's ignition energy and preventing the air-fuel mixture from igniting. This can cause the engine to fail to start or misfire after starting. While some technologies increase the overall magnetization energy of the ignition coil to enable successful engine starting in low-temperature environments, this approach carries the risk of excessive coil magnetization energy leading to burnout. Furthermore, starting an alternator at normal temperatures does not require excessively high ignition coil magnetization energy, increasing the vehicle's energy and fuel consumption.

[0028] Based on this, the vehicle engine low-temperature starting method of this application embodiment can increase the ignition capability of the spark plug in a low-temperature environment by increasing the magnetization time in a low-temperature environment, thereby ensuring successful engine starting.

[0029] The implementation details of the technical solutions in the embodiments of this application are described in detail below.

[0030] Figure 1 This is a schematic flowchart of a vehicle engine low-temperature start-up method provided in an embodiment of this application.

[0031] For example, such as Figure 1 As shown, the methods for starting a vehicle engine in cold weather include:

[0032] Step S101: After the vehicle is started, determine the engine coolant temperature and the first magnetization time.

[0033] The vehicle is equipped with an Electronic Control Unit (ECU), also known as the vehicle's on-board computer. The ECU can control the vehicle's driving status and realize various functions of the vehicle. It mainly uses data acquisition and exchange from various sensors and buses to determine the vehicle's status and the user's intentions, thereby controlling the vehicle through actuators.

[0034] The ECU can obtain the engine coolant temperature, and the coolant temperature can be used to indirectly determine whether the vehicle is in a low-temperature environment.

[0035] The ECU can also determine the first magnetization time, which is the magnetization time required to start the engine under normal conditions. Here, normal conditions refer to starting the engine at room temperature. Generally, the magnetization time required to start the engine at room temperature is set and stored in the vehicle before leaving the factory.

[0036] Step S102: If the water temperature is determined to be less than or equal to the set temperature, the first magnetization time is corrected to determine the second magnetization time.

[0037] When the water temperature is less than or equal to the set temperature, it indicates that the engine is in a low-temperature environment. Starting the engine in a low-temperature environment requires more magnetization energy. Based on this, a second magnetization time is obtained by adjusting the first magnetization time. This second magnetization time is longer than the first magnetization time, thus ensuring the spark plug's ignition capability in low-temperature environments. In practical applications, the set temperature can be set to -4℃.

[0038] Step S103: Ignite the engine based on the second magnetization time to achieve low-temperature engine start.

[0039] Here, the engine is ignited in a low-temperature environment according to the second magnetization time, which can enhance the ignition capability of the spark plugs and ensure that the engine can start in a low-temperature environment.

[0040] Compared to igniting the engine based on the first magnetization time, igniting the engine based on the second magnetization time increases the energy of the ignition coil, allowing the spark plug to generate a sufficiently powerful spark to ignite the combustible mixture in the engine cylinder, thus meeting the energy requirements for starting the engine in low-temperature environments. In practical applications, because the spark coil can provide sufficient magnetization energy, the air-fuel mixture in the engine cylinder can burn completely, thereby preventing excessive carbon buildup on the spark plug surface.

[0041] After correcting the magnetization time, it is also necessary to monitor the engine's operating condition in real time. When the engine water temperature is detected to rise above -4°C, the correction of the magnetization time is ended, which can reduce power loss and generator fuel consumption.

[0042] In one embodiment of this application, the ignition coil of the engine is energized and magnetized based on a second magnetization time. That is, the magnetization time of the ignition coil is set as the second magnetization time. After the ignition coil is magnetized, the engine can be started in a low-temperature environment. Specifically, the ignition coil includes two sets of coils, namely a primary coil and a secondary coil. When the primary coil is powered on, a strong magnetic field is generated around the primary coil as the current increases. The energization time of the primary coil is controlled to be the second magnetization time. When the second magnetization time is reached, the primary coil circuit is disconnected. At this time, the magnetic field of the primary coil decays rapidly, and the secondary coil can generate a high induced voltage. The induced voltage can be converted into a high-voltage electric spark through the spark plug, thereby igniting the combustible mixture inside the engine and starting the engine in a low-temperature environment.

[0043] In summary, the vehicle engine low-temperature starting method of this application can increase the ignition capability of spark plugs in low-temperature environments by modifying the magnetization time, thereby enabling complete combustion of the air-fuel mixture in the engine cylinder, ensuring successful engine starting in low-temperature environments, and reducing the risk of spark plug carbon buildup.

[0044] Figure 2 This is a schematic flowchart of a vehicle engine low-temperature start-up method provided in an embodiment of this application.

[0045] Step S201: Obtain the engine's charging voltage and real-time engine speed.

[0046] Step S202: Determine the first magnetization time in the second setting table based on the engine's charging voltage and the engine's real-time speed.

[0047] The second setting table here is the MAP diagram pre-defined before the vehicle leaves the factory. The MAP diagram refers to the ignition control curve diagram required by the engine under different operating conditions. The second setting table records the ignition control curve diagram for starting under normal temperature conditions, as shown in Table 1. Table 1 shows the magnetization time under different operating conditions at normal temperature.

[0048] Table 1

[0049]

[0050] In practical applications, the magnetization time is related to the engine's real-time speed and the generator's charging voltage. The magnetization time will vary accordingly under different real-time speeds and charging voltages. In Table 1, the first row of data refers to the charging voltage, the first column refers to the generator's real-time speed, and the remaining data are the magnetization times corresponding to different charging voltages and real-time speeds. For example, with an engine speed of 1200 rpm and a charging voltage of 12V, the first magnetization time under normal temperature conditions can be determined from the second setting table to be 4.3 ms.

[0051] Figure 3 This is a schematic flowchart of a vehicle engine low-temperature start-up method provided in an embodiment of this application.

[0052] Step S301: Determine the correction coefficient in the first setting table based on the engine coolant temperature and the engine charging voltage.

[0053] Here, a first setting table is provided. This table records the correction coefficients corresponding to different coolant temperatures and charging voltages. It is understandable that the magnetizing energy required to start the engine varies at different coolant temperatures, thus affecting the magnetizing time of the ignition coil. Similarly, the charging voltage also affects the magnetizing time of the ignition coil. Therefore, the corresponding correction coefficients need to be determined based on the engine coolant temperature and charging voltage in the first setting table. See Table 2 below, which is the magnetizing time correction table.

[0054] Table 2

[0055]

[0056] In Table 1, the first row of data represents different charging voltages, the first column of data represents different water temperatures, and the remaining data are correction factors corresponding to different charging voltages and water temperatures. For example, when the charging voltage is 12V and the water temperature is -28℃, the corresponding correction factor is 1.15.

[0057] Step S302: Determine the second magnetization time based on the first magnetization time and the correction coefficient.

[0058] In one embodiment of this application, the second magnetization time = the first magnetization time * a correction coefficient. After determining the correction coefficient, the first magnetization time and the correction coefficient are multiplied together, and the result of the product is determined as the second magnetization time. For example, under the current operating conditions of engine speed 1200 rpm, charging voltage 12V, and water temperature -28℃, the corresponding first magnetization time can be determined to be 4.3 ms according to the second setting table, and the corresponding correction coefficient can be determined to be 1.15 according to the first setting table. Based on this, the second magnetization time = 4.3 ms * 1.15 = 4.945 ms.

[0059] Figure 4 This is a schematic flowchart of a vehicle engine low-temperature start-up method provided in an embodiment of this application.

[0060] Step S401: Determine the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures.

[0061] Step S402: Based on the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures, formulate a first setting table.

[0062] Steps S401 and S402 are used to formulate the first setting table. In practical applications, the lower the temperature, the lower the resistance of the ignition coil, and the greater the current flowing through the ignition coil under the same charging voltage. In this case, the maximum ignition energy that the ignition coil can achieve is mainly considered based on current limiting factors. After experimenting with the ignition coil, the improvement data shown in Table 3 can be obtained.

[0063] Table 3

[0064]

[0065] The ignition energy enhancement ratio in Table 3 above refers to the ratio that can be enhanced compared to the ignition energy at room temperature. After determining the ignition energy enhancement ratio in low temperature environment, the correction coefficient corresponding to different water temperatures is determined based on the maximum ignition energy that can be achieved at different water temperatures and charging voltages, so that the first setting table can be obtained based on Table 2.

[0066] In one embodiment of this application, when the water temperature is determined to be higher than a set temperature, the engine is ignited based on a first magnetization time, wherein the set temperature can be -4°C. Specifically, the ignition coil includes two sets of coils: a primary coil and a secondary coil. When the primary coil is powered on, a strong magnetic field is generated around it as the current increases. The energizing time of the primary coil is controlled as the first magnetization time. Upon reaching the first magnetization time, the primary coil circuit is disconnected, and the magnetic field of the primary coil rapidly decays. The secondary coil generates an induced voltage, which is converted into a high-voltage spark through the spark plug, thereby igniting the combustible mixture inside the engine and starting the engine at room temperature. The magnetization energy required to start the engine at room temperature is lower than that required to start it at low temperature. Therefore, maintaining engine starting based on the first magnetization time at room temperature can reduce the overall vehicle battery usage and prevent continuous battery depletion and increased fuel consumption.

[0067] Figure 5 This is a schematic diagram of the structure of a vehicle engine low-temperature starting device provided in an embodiment of this application.

[0068] For example, such as Figure 5 As shown, the vehicle engine cold start device 500 may include:

[0069] First determining module 501: used to determine the engine coolant temperature and first magnetization time after the vehicle is started; the first magnetization time represents the magnetization time required to start the engine under normal conditions;

[0070] The second determining module 502 is used to correct the first magnetization time and determine a second magnetization time when the water temperature is determined to be less than or equal to a set temperature; the second magnetization time is greater than the first magnetization time.

[0071] Ignition module 503: used to ignite the engine based on the second magnetization time to achieve low-temperature start-up of the engine.

[0072] In one embodiment of this application, the second determining module 502 is specifically used to determine a correction coefficient in a first setting table based on the engine's water temperature and the engine's charging voltage; the first setting table is used to record correction coefficients corresponding to different water temperatures and charging voltages; and to determine the second magnetization time based on the first magnetization time and the correction coefficient.

[0073] In one embodiment of this application, the second determining module 502 is specifically used to determine the product of the first magnetization time and the correction coefficient as the second magnetization time.

[0074] In one embodiment of this application, the second determining module 502 is further configured to determine the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures; and formulate the first setting table based on the maximum ignition energy that the ignition coil can achieve under different charging voltages and different water temperatures.

[0075] In one embodiment of this application, the first determining module 501 is specifically used to: acquire the charging voltage of the engine and the real-time speed of the engine; determine the first magnetization time in a second setting table based on the charging voltage of the engine and the real-time speed of the engine; the second setting table is used to record the magnetization time corresponding to different charging voltages and real-time speeds.

[0076] In one embodiment of this application, the ignition module 503 is further configured to ignite the engine based on the first magnetization time to start the engine when it is determined that the water temperature is greater than the set temperature.

[0077] In one embodiment of this application, the ignition module 503 is specifically used to control the ignition coil of the engine to be energized and magnetized based on the second magnetization time.

[0078] This application also provides a vehicle, and it should be understood that the vehicle engine low-temperature start method described above can be applied to vehicles.

[0079] Specifically, the aforementioned low-temperature engine starting methods can be implemented by the vehicle's ECU (Engine Control Unit). The ECU is the engine's integrated control device. Its function is to calculate, process, and judge various information input from the engine's sensors based on its stored program, and then output commands to control the actions of relevant actuators, achieving the goal of fast, accurate, and automatic engine control. The aforementioned low-temperature engine starting methods can be executed based on the vehicle's ECU.

[0080] Furthermore, this application also provides an apparatus that may include a memory and a processor, wherein the memory stores executable program code, and the processor is used to call and execute the executable program code to perform the vehicle engine low-temperature start method provided in this application.

[0081] This embodiment can divide the device into functional modules based on the above method example. For example, each module can correspond to a separate function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0082] When each functional module is divided according to its corresponding function, the device may further include a first determining module, a second determining module, and an ignition module, etc. It should be noted that all relevant content of each step involved in the above method embodiments can be referenced to the functional description of the corresponding functional module, and will not be repeated here.

[0083] It should be understood that the device provided in this embodiment is used to perform the above-described method for starting a vehicle engine at low temperatures, and therefore can achieve the same effect as the above-described implementation method.

[0084] When using an integrated unit, the device may include a processing module and a storage module. When the device is applied to a vehicle, the processing module can be used to control and manage the vehicle's movements. The storage module can be used to support the vehicle in executing program code, etc.

[0085] The processing module may be a processor or a controller, which can implement or execute various exemplary logic blocks, modules, and circuits as disclosed in this application. The processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and microprocessors, etc., and the storage module may be a memory.

[0086] In addition, the device provided in the embodiments of this application may specifically be a chip, component or module. The chip may include a connected processor and a memory. The memory is used to store instructions. When the processor calls and executes the instructions, the chip can execute the vehicle engine low-temperature start method provided in the above embodiments.

[0087] This embodiment also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement the vehicle engine low-temperature start method provided in the above embodiment.

[0088] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to implement the vehicle engine low-temperature start method provided in the above embodiment.

[0089] In this embodiment, the device, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0090] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0091] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0092] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of low temperature starting a vehicle engine, characterized by, The method comprises: After the vehicle starts, the water temperature of the engine and the first magnetizing time are determined; the first magnetizing time represents the magnetizing time required to start the engine under normal conditions; In the case where the water temperature is determined to be less than or equal to a set temperature, the first magnetizing time is corrected to determine a second magnetizing time, including: determining a correction coefficient in a first set table according to the water temperature of the engine and the charging voltage of the engine; the first set table is used to record the correction coefficients corresponding to different water temperatures and charging voltages; determining the second magnetizing time according to the first magnetizing time and the correction coefficient; the second magnetizing time is greater than the first magnetizing time; the set temperature represents the trigger temperature of the engine low-temperature start; wherein the first set table is formulated based on the increase ratio of the ignition energy when the water temperature is less than or equal to the set temperature compared with the ignition energy when the water temperature is greater than the set temperature, to determine the maximum ignition energy that the ignition coil can reach under different charging voltages and different water temperatures; the first set table is formulated according to the maximum ignition energy that the ignition coil can reach under different charging voltages and different water temperatures; Ignition is performed on the engine based on the second magnetizing time to realize the engine low-temperature start; wherein in the case where the water temperature rises above the set temperature, the correction of the first magnetizing time is ended.

2. The vehicle engine cold-start method of claim 1, wherein The second magnetizing time is determined according to the first magnetizing time and the correction coefficient, including: The product of the first magnetizing time and the correction coefficient is determined as the second magnetizing time.

3. The vehicle engine cold-start method of claim 1, wherein The first magnetizing time is determined after the vehicle starts, including: The charging voltage of the engine and the real-time speed of the engine are obtained; The first magnetizing time is determined in a second set table according to the charging voltage of the engine and the real-time speed of the engine; the second set table is used to record the magnetizing time corresponding to different charging voltages and real-time speeds.

4. The vehicle engine cold-start method of claim 1, wherein The method further comprises: In the case where the water temperature is determined to be greater than the set temperature, ignition is performed on the engine based on the first magnetizing time to realize the engine start.

5. The vehicle engine cold-start method of claim 1, wherein Ignition is performed on the engine based on the second magnetizing time to realize the engine low-temperature start, including: The energization magnetization of the ignition coil of the engine is controlled based on the second magnetizing time.

6. A low temperature starting device for a vehicle engine, characterized by The device comprises a first determination module for determining the water temperature of the engine and the first magnetizing time after the vehicle starts; the first magnetizing time represents the magnetizing time required to start the engine under normal conditions; The second determining module is configured to correct the first magnetizing time to determine a second magnetizing time when the water temperature is less than or equal to a set temperature, including: determining a correction coefficient in a first set table according to the water temperature of the engine and the charging voltage of the engine; the first set table is used to record correction coefficients corresponding to different water temperatures and charging voltages; determining the second magnetizing time according to the first magnetizing time and the correction coefficient; the second magnetizing time is greater than the first magnetizing time; the set temperature represents a trigger temperature of low-temperature starting of the engine; wherein, the first set table is formulated by: determining the maximum ignition energy that the ignition coil can reach under different charging voltages and different water temperatures based on the increase ratio of the ignition energy when the water temperature is less than or equal to the set temperature compared with the ignition energy when the water temperature is greater than the set temperature; formulating the first set table according to the maximum ignition energy that the ignition coil can reach under different charging voltages and different water temperatures; The ignition module is configured to ignite the engine based on the second magnetizing time to realize low-temperature starting of the engine; wherein, the correction of the first magnetizing time is ended when the water temperature rises above the set temperature.

7. A vehicle characterized by comprising: The vehicle includes a memory and a processor, and the memory stores a computer program, and the processor implements the steps of the method in any one of claims 1 to 5 when executing the computer program.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and when the computer program is executed, the method as claimed in any one of claims 1 to 5 is implemented.

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