Urea nozzle cooling control method, device, vehicle and storage medium

Abstract

The present invention discloses a control method, device, vehicle and storage medium for cooling a urea nozzle. The method comprises: obtaining a current ambient temperature, a current exhaust temperature of an engine, a current temperature of a coolant and a current capacity of a battery; determining a first operating time of an electronic water pump according to the current exhaust temperature of the engine and the current temperature of the coolant; correcting the first operating time according to the current ambient temperature and the current capacity of the battery; and controlling the operating time of the electronic water pump according to the corrected first operating time to control the cooling of the urea nozzle. The cooling time of the urea nozzle can be reasonably optimized, and the operating time of the electronic water pump can be shortened as much as possible while ensuring that the urea nozzle does not overheat, thereby reducing battery power consumption and avoiding the vehicle from being unable to start normally due to battery power loss.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for controlling urea nozzle cooling, a vehicle, and a storage medium. Background Art

[0002] Pickup trucks, as family-use light trucks, primarily use diesel as a power source. The urea nozzles in their diesel exhaust systems are directly exposed to high-temperature gases. After the vehicle is turned off, the nozzles are cooled primarily by the operation of an electronic water pump to dissipate heat and prevent overheating. However, if the electronic water pump runs for too long, it can easily drain the vehicle's battery, preventing it from starting properly the next time. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention aims to provide a control method, device, vehicle and storage medium for cooling a urea nozzle.

[0004] A method for controlling urea nozzle cooling proposed by the present invention includes: obtaining a current ambient temperature, a current engine exhaust temperature, a current coolant temperature, and a current battery capacity; determining a first operating time of an electronic water pump based on the current engine exhaust temperature and the current coolant temperature; correcting the first operating time based on the current ambient temperature and the current battery capacity; and controlling the operating time of the electronic water pump based on the corrected first operating time to control cooling of the urea nozzle.

[0005] In addition, the control method for cooling the urea nozzle according to the embodiment of the present invention may also have the following additional technical features:

[0006] Further, determining the first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant includes: determining the first operating time based on a first mapping relationship table, wherein the first mapping relationship table includes first operating times corresponding to different exhaust temperature and coolant temperature combinations.

[0007] Furthermore, the first operating time is corrected according to the current ambient temperature and the current capacity of the battery, including: determining a correction coefficient corresponding to the first operating time according to the current ambient temperature and the current capacity of the battery; and correcting the first operating time according to the correction coefficient.

[0008] Furthermore, a correction coefficient corresponding to the first operating time is determined based on the current ambient temperature and the current capacity of the battery, including: determining a first correction coefficient corresponding to the ambient temperature based on the current ambient temperature; determining a second correction coefficient corresponding to the battery capacity based on the current capacity of the battery; and using the product of the first correction coefficient and the second correction coefficient as the correction coefficient corresponding to the first operating time.

[0009] Further, determining a first correction coefficient corresponding to the ambient temperature according to the current ambient temperature includes: determining the first correction coefficient according to a second mapping relationship table, wherein the second mapping relationship table includes first correction coefficients corresponding to different ambient temperatures.

[0010] Further, determining a second correction coefficient corresponding to the battery capacity according to the current capacity of the battery includes: determining the second correction coefficient according to a third mapping relationship table, wherein the third mapping relationship table includes second correction coefficients corresponding to different battery capacities.

[0011] Furthermore, controlling the operating time of the electronic water pump according to the corrected first operating time includes: controlling the operating time of the electronic water pump to reach the corrected first operating time to cool the urea nozzle, wherein the product of the first operating time and the correction coefficient is used as the corrected first operating time.

[0012] Furthermore, the electronic water pump is connected to an independent radiator.

[0013] According to the control method for cooling the urea nozzle according to an embodiment of the present invention, a current ambient temperature, a current exhaust temperature of the engine, a current temperature of the coolant, and a current capacity of the battery are obtained, a first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, the first operating time is corrected according to the current ambient temperature and the current capacity of the battery, and the operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle. This method can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0014] In response to the above-mentioned problems, the present invention further proposes a control device for cooling a urea nozzle, comprising: an acquisition module, configured to acquire a current ambient temperature, a current exhaust temperature of an engine, a current temperature of a coolant, and a current capacity of a battery; a first determination module, configured to determine a first operating time of an electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant; a correction module, configured to correct the first operating time based on the current ambient temperature and the current capacity of the battery; and a control module, configured to control the operating time of the electronic water pump based on the corrected first operating time, so as to control the cooling of the urea nozzle.

[0015] According to an embodiment of the present invention, a control device for cooling a urea nozzle obtains a current ambient temperature, a current exhaust temperature of an engine, a current temperature of a coolant, and a current capacity of a battery, determines a first operating time of an electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant, corrects the first operating time based on the current ambient temperature and the current capacity of the battery, and controls the operating time of the electronic water pump based on the corrected first operating time to control the cooling of the urea nozzle. This device can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0016] In response to the above-mentioned problems, the present invention further proposes a vehicle, comprising a processor and a memory; wherein the memory is used to store a computer program; and the processor is used to execute the urea nozzle cooling control method as described in any of the above-mentioned embodiments according to the computer program.

[0017] According to the vehicle of the embodiment of the present invention, by obtaining the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery, a first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, and the first operating time is corrected according to the current ambient temperature and the current capacity of the battery. The operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle. This can reasonably optimize the cooling time of the urea nozzle, shorten the operating time of the electronic water pump as much as possible while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0018] In response to the above-mentioned problems, the present invention further proposes a computer-readable storage medium, on which a control program for cooling a urea nozzle is stored. When the control program for cooling a urea nozzle is executed by a processor, the control method for cooling a urea nozzle as described in any of the above-mentioned embodiments is implemented.

[0019] According to an embodiment of the present invention, when a urea nozzle cooling control program stored on a computer-readable storage medium is executed by a processor, the computer-readable storage medium obtains a current ambient temperature, a current exhaust temperature of the engine, a current coolant temperature, and a current capacity of the battery, determines a first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant, corrects the first operating time based on the current ambient temperature and the current capacity of the battery, and controls the operating time of the electronic water pump based on the corrected first operating time to control the cooling of the urea nozzle. This can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0022] Figure 1 is a flow chart of a method for controlling urea nozzle cooling according to one embodiment of the present invention;

[0023] Figure 2 1 is a schematic structural diagram of a urea nozzle cooling control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0025] Reference below Figure 1-Figure 2 A method, device, vehicle, and storage medium for controlling urea nozzle cooling according to embodiments of the present invention are described.

[0026] Figure 1 FIG. 1 is a flow chart of a method for controlling urea nozzle cooling according to an embodiment of the present invention. Figure 1 As shown, a method for controlling urea nozzle cooling includes the following steps:

[0027] Step S1: Obtain the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery.

[0028] In a specific embodiment, the current ambient temperature, the current engine exhaust temperature, and the current coolant temperature can be acquired via temperature sensors. The temperature sensor for acquiring the current ambient temperature can be located on the exterior of the vehicle, the temperature sensor for acquiring the current engine exhaust temperature can be located in the vehicle's exhaust pipe, and the temperature sensor for acquiring the current coolant temperature can be located in the nozzle coolant. The current battery capacity can be read directly from the vehicle's display screen or from an external mobile device connected via a communication network.

[0029] It should be noted that, in order to reduce the cooling time of the urea nozzle, an independent radiator and an electronic water pump are newly added in the embodiment of the present invention. The electronic water pump is connected to the independent radiator, and the urea nozzle is connected to the independent radiator and the electronic water pump respectively, forming an independent cooling circuit, so that the nozzle coolant circulating therein is independent of the cooling system of the engine and the whole vehicle, so as to avoid the high temperature of the nozzle coolant causing the electronic water pump to run for too long, thereby reducing the power consumption of the electronic water pump and avoiding the risk of battery depletion due to long operation of the water pump.

[0030] Step S2: Determine a first operating time of the electronic water pump according to the current exhaust temperature of the engine and the current temperature of the coolant.

[0031] Specifically, when cooling the urea nozzle, if the speed of the electronic water pump is constant, the higher the current exhaust temperature of the engine and the current temperature of the coolant are, the longer the first operating time of the electronic water pump is. Therefore, in an embodiment of the present invention, the first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, so as to control the cooling of the urea nozzle by the operating time of the electronic water pump.

[0032] Step S3: Correct the first operating time according to the current ambient temperature and the current capacity of the battery.

[0033] Specifically, the urea nozzle is in direct contact with urea molecules and high-temperature exhaust gas. To prevent the urea nozzle from overheating, cooling measures are required. During urea nozzle cooling, both the current ambient temperature and the battery's current capacity affect the electronic water pump's operating time. The higher the current ambient temperature, the longer the electronic water pump operates. This longer operating time consumes more battery power, increasing the risk of battery exhaustion. When the battery's current capacity is low, continuing to supply power to the electronic water pump will affect the vehicle's normal start. Therefore, when cooling the urea nozzle, the current ambient temperature and battery capacity must be considered to ensure that after the urea nozzle has cooled, the battery's capacity does not affect the vehicle's next normal start. Therefore, embodiments of the present invention modify the first operating time based on the current ambient temperature and battery's current capacity to optimize the urea nozzle's cooling time. This minimizes the electronic water pump's operating time while ensuring the urea nozzle does not overheat, reducing battery consumption and preventing the vehicle from failing to start normally due to battery exhaustion.

[0034] Step S4: Controlling the operating time of the electronic water pump according to the corrected first operating time to control the cooling of the urea nozzle.

[0035] Specifically, after correcting the first operating time, the embodiment of the present invention controls the operating time of the electronic water pump through the corrected first operating time to reduce the risk of battery depletion and avoid the vehicle being unable to start normally next time due to battery depletion.

[0036] In one embodiment of the present invention, determining the first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant includes: determining the first operating time based on a first mapping relationship table, wherein the first mapping relationship table includes the first operating times corresponding to different exhaust temperature and coolant temperature combinations.

[0037] Specifically, the first operating time corresponding to different exhaust temperature and coolant temperature combinations in the first mapping relationship table can be obtained through actual vehicle test calibration and pre-stored in the controller. After obtaining the current exhaust temperature of the engine and the current temperature of the coolant, the first operating time can be determined by searching the first mapping relationship table. Exemplarily, the first mapping relationship table is shown in Table 1. In other embodiments, the first operating time data corresponding to the exhaust temperature and coolant temperature combinations in the first mapping relationship table can be curve-fitted to obtain a first function of the first operating time with respect to the two parameters of exhaust temperature and coolant temperature. Therefore, after obtaining the current exhaust temperature of the engine and the current temperature of the coolant, the current exhaust temperature and the current temperature of the coolant are used as input parameters of the first function, and the first operating time is calculated by the first function.

[0038]

[0039] Table 1

[0040] In one embodiment of the present invention, the first operating time is corrected according to the current ambient temperature and the current capacity of the battery, including: determining a correction coefficient corresponding to the first operating time according to the current ambient temperature and the current capacity of the battery; and correcting the first operating time according to the correction coefficient.

[0041] Specifically, within a preset ambient temperature range, such as -40°C to 50°C, when the battery capacity is constant, the higher the current ambient temperature, the less conducive it is to cooling the urea nozzle. Within a preset battery capacity range, such as 50% to 100%, when the ambient temperature is constant, the smaller the current battery capacity, the less power available for cooling the urea nozzle. Therefore, after determining the first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant, the first operating time needs to be corrected based on the current ambient temperature and the current capacity of the battery.

[0042] In a specific embodiment, when determining the correction coefficient corresponding to the first operating time based on the current ambient temperature and the current capacity of the battery, the correction coefficient corresponding to the current ambient temperature and the current capacity of the battery can be obtained by querying a mapping table of ambient temperature-battery capacity-correction coefficient correspondences, wherein the mapping table of ambient temperature-battery capacity-correction coefficient correspondences contains at least one set of ambient temperature-battery capacity-correction coefficient correspondences, and the at least one set of ambient temperature-battery capacity-correction coefficient correspondences includes at least a correspondence between ambient temperature, battery capacity, and correction coefficient. In other embodiments, the correction coefficient data corresponding to the ambient temperature and battery capacity combination in the ambient temperature-battery capacity-correction coefficient correspondence mapping table can be curve-fitted to obtain a function of the correction coefficient with respect to the two parameters of ambient temperature and battery capacity. Thus, when determining the correction coefficient corresponding to the first operating time based on the current ambient temperature and the current capacity of the battery, the current ambient temperature and the current capacity of the battery are used as input parameters, and the correction coefficient corresponding to the first operating time is obtained through function calculation. In one embodiment of the present invention, a correction coefficient corresponding to the first operating time is determined based on the current ambient temperature and the current capacity of the battery, including: determining a first correction coefficient corresponding to the ambient temperature based on the current ambient temperature; determining a second correction coefficient corresponding to the battery capacity based on the current capacity of the battery; and using the product of the first correction coefficient and the second correction coefficient as the correction coefficient corresponding to the first operating time.

[0043] Specifically, when the battery capacity is large, for example, the battery capacity is 100%, even if the current ambient temperature is high, the risk of battery depletion is low. At this time, there is no need to consider the impact of the battery capacity on the cooling time of the urea nozzle, that is, it is only necessary to correct the first operating time according to the current ambient temperature; and when the battery capacity is small, for example, the battery capacity is 50%, even if the current ambient temperature is low, the risk of battery depletion is high. At this time, regardless of the current ambient temperature, it is necessary to stop the operation of the electronic water pump to stop cooling the urea nozzle, that is, it is only necessary to correct the first operating time according to the current capacity of the battery. Therefore, the current ambient temperature and the current capacity of the battery have independent effects on the first operating time. In an embodiment of the present invention, a first correction coefficient corresponding to the ambient temperature is determined according to the current ambient temperature, and a second correction coefficient corresponding to the battery capacity is determined according to the current capacity of the battery. The product of the first correction coefficient and the second correction coefficient is used as the correction coefficient corresponding to the first operating time.

[0044] In one embodiment of the present invention, determining the first correction coefficient corresponding to the ambient temperature according to the current ambient temperature includes: determining the first correction coefficient according to a second mapping relationship table, wherein the second mapping relationship table includes first correction coefficients corresponding to different ambient temperatures.

[0045] Specifically, the first correction coefficient corresponding to different ambient temperatures in the second mapping relationship table can be obtained through actual vehicle test calibration and pre-stored in the controller. After obtaining the current ambient temperature, the first correction coefficient can be determined by searching the second mapping relationship table. Exemplarily, the second mapping relationship table is shown in Table 2. In other embodiments, the first correction coefficient data corresponding to different ambient temperatures in the second mapping relationship table can be curve fitted to obtain a second function of the first correction coefficient with respect to different ambient temperatures. After obtaining the current ambient temperature, the current ambient temperature is used as the input parameter of the second function, and the first correction coefficient is calculated by the second function.

[0046]

[0047] Table 2

[0048] In one embodiment of the present invention, determining a second correction coefficient corresponding to the battery capacity according to the current capacity of the battery includes: determining the second correction coefficient according to a third mapping relationship table, wherein the third mapping relationship table includes second correction coefficients corresponding to different battery capacities.

[0049] Specifically, the second correction coefficients corresponding to different battery capacities in the third mapping table can be obtained through actual vehicle test calibration and pre-stored in the controller. After obtaining the current capacity of the battery, the second correction coefficient can be determined by searching the third mapping table. Exemplarily, the third mapping table is shown in Table 3. In other embodiments, the second correction coefficient data corresponding to the battery capacity in the third mapping table can be curve fitted to obtain a third function of the second correction coefficient with respect to the battery capacity, so that after obtaining the current capacity of the battery, the current capacity of the battery is used as the input parameter of the third function, and the second correction coefficient is calculated by the third function.

[0050]

[0051] Table 3

[0052] In one embodiment of the present invention, controlling the operating time of the electronic water pump according to the corrected first operating time includes: controlling the operating time of the electronic water pump to reach the corrected first operating time to cool the urea nozzle, wherein the product of the first operating time and the correction coefficient is used as the corrected first operating time.

[0053] Specifically, after determining the first operating time of the electronic water pump based on the current engine exhaust temperature and the current coolant temperature, the first operating time is corrected using a correction coefficient to obtain a corrected first operating time. This allows the electronic water pump's operating time to be controlled to achieve the corrected first operating time. This can optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring the urea nozzle does not overheat, reduce battery power consumption, and prevent the vehicle from starting normally due to battery depletion. Specifically, the product of the first operating time and the correction coefficient is used as the corrected first operating time. According to the control method for cooling the urea nozzle according to an embodiment of the present invention, a current ambient temperature, a current exhaust temperature of the engine, a current temperature of the coolant, and a current capacity of the battery are obtained, a first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, the first operating time is corrected according to the current ambient temperature and the current capacity of the battery, and the operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle. This method can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0054] A further embodiment of the present invention also discloses a control device for cooling a urea nozzle. Figure 2 FIG. 1 is a schematic diagram of a control device for cooling a urea nozzle according to an embodiment of the present invention. Figure 2As shown, the device 10 includes: an acquisition module 11, a first determination module 12, a correction module 13, and a control module 14. The acquisition module 11 is used to acquire the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery; the first determination module 12 is used to determine a first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant; the correction module 13 is used to correct the first operating time based on the current ambient temperature and the current capacity of the battery; and the control module 14 is used to control the operating time of the electronic water pump based on the corrected first operating time to control the cooling of the urea nozzle.

[0055] In one embodiment of the present invention, the first determination module 12 determines the first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant, including: determining the first operating time according to a first mapping relationship table, wherein the first mapping relationship table includes the first operating times corresponding to different exhaust temperature and coolant temperature combinations.

[0056] In one embodiment of the present invention, the correction module 13 corrects the first operating time according to the current ambient temperature and the current capacity of the battery, including: determining a correction coefficient corresponding to the first operating time according to the current ambient temperature and the current capacity of the battery; and correcting the first operating time according to the correction coefficient.

[0057] In one embodiment of the present invention, the correction module 13 determines a correction coefficient corresponding to the first operating time based on the current ambient temperature and the current capacity of the battery, including: determining a first correction coefficient corresponding to the ambient temperature based on the current ambient temperature; determining a second correction coefficient corresponding to the battery capacity based on the current capacity of the battery; and taking the product of the first correction coefficient and the second correction coefficient as the correction coefficient corresponding to the first operating time.

[0058] In one embodiment of the present invention, the correction module 13 determines the first correction coefficient corresponding to the ambient temperature according to the current ambient temperature, including: determining the first correction coefficient according to a second mapping relationship table, wherein the second mapping relationship table includes first correction coefficients corresponding to different ambient temperatures.

[0059] In one embodiment of the present invention, the correction module 13 determines the second correction coefficient corresponding to the battery capacity according to the current capacity of the battery, including: determining the second correction coefficient according to a third mapping relationship table, wherein the third mapping relationship table includes second correction coefficients corresponding to different battery capacities.

[0060] In one embodiment of the present invention, the control module 14 controls the operating time of the electronic water pump according to the corrected first operating time, including: controlling the operating time of the electronic water pump to reach the corrected first operating time to cool the urea nozzle, wherein the product of the first operating time and the correction coefficient is used as the corrected first operating time.

[0061] In one embodiment of the present invention, the electronic water pump is connected to an independent radiator.

[0062] It should be noted that, when the control device 10 for urea nozzle cooling in an embodiment of the present invention controls urea nozzle cooling, its specific implementation method is similar to the specific implementation method of the control method for urea nozzle cooling in an embodiment of the present invention. For details, please refer to the description of the method part. In order to reduce redundancy, it will not be repeated here.

[0063] According to the control device 10 for urea nozzle cooling according to the embodiment of the present invention, by obtaining the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery, a first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, and the first operating time is corrected according to the current ambient temperature and the current capacity of the battery. The operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle. This can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0064] A further embodiment of the present invention also discloses a vehicle, comprising a processor and a memory; wherein the memory is used to store a computer program; and the processor is used to execute the urea nozzle cooling control method as described in any of the above embodiments according to the computer program.

[0065] It should be noted that, when the vehicle in the embodiment of the present invention controls the cooling of the urea nozzle, its specific implementation is similar to the specific implementation of the control method for cooling the urea nozzle in the embodiment of the present invention. For details, please refer to the description of the method part. In order to reduce redundancy, it will not be repeated here.

[0066] According to the vehicle of the embodiment of the present invention, by obtaining the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery, a first operating time of the electronic water pump is determined according to the current exhaust temperature of the engine and the current temperature of the coolant, and the first operating time is corrected according to the current ambient temperature and the current capacity of the battery. The operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle. This can reasonably optimize the cooling time of the urea nozzle, shorten the operating time of the electronic water pump as much as possible while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0067] A further embodiment of the present invention further discloses a computer-readable storage medium, on which a control program for cooling a urea nozzle is stored. When the control program for cooling a urea nozzle is executed by a processor, the control method for cooling a urea nozzle as described in any of the above embodiments is implemented.

[0068] According to an embodiment of the present invention, when a urea nozzle cooling control program stored on a computer-readable storage medium is executed by a processor, the computer-readable storage medium obtains a current ambient temperature, a current exhaust temperature of the engine, a current coolant temperature, and a current capacity of the battery, determines a first operating time of the electronic water pump based on the current exhaust temperature of the engine and the current temperature of the coolant, corrects the first operating time based on the current ambient temperature and the current capacity of the battery, and controls the operating time of the electronic water pump based on the corrected first operating time to control the cooling of the urea nozzle. This can reasonably optimize the cooling time of the urea nozzle, minimize the operating time of the electronic water pump while ensuring that the urea nozzle does not overheat, reduce battery power consumption, and avoid the vehicle from being unable to start normally due to battery depletion.

[0069] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for controlling cooling of a urea nozzle, characterized in that: include: Get the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery; determining a first operating time of the electronic water pump according to a current exhaust temperature of the engine and a current temperature of the coolant; Correcting the first operating time according to the current ambient temperature and the current capacity of the battery; The operating time of the electronic water pump is controlled according to the corrected first operating time to control the cooling of the urea nozzle.

2. The urea nozzle cooling control method according to claim 1, characterized in that: Determining a first operating time of the electronic water pump according to a current exhaust temperature of the engine and a current temperature of the coolant includes: The first operating time is determined according to a first mapping relationship table, wherein the first mapping relationship table includes first operating times corresponding to different combinations of exhaust temperature and coolant temperature.

3. The urea nozzle cooling control method according to claim 1, characterized in that: Correcting the first operating time according to the current ambient temperature and the current capacity of the battery includes: determining a correction coefficient corresponding to the first operating time according to the current ambient temperature and the current capacity of the battery; The first operating time is corrected according to the correction coefficient.

4. The method for controlling urea nozzle cooling according to claim 3, characterized in that: Determining a correction coefficient corresponding to the first operating time according to the current ambient temperature and the current capacity of the battery includes: determining a first correction coefficient corresponding to the ambient temperature according to the current ambient temperature; determining a second correction coefficient corresponding to the battery capacity according to the current capacity of the battery; The product of the first correction coefficient and the second correction coefficient is used as the correction coefficient corresponding to the first operating time.

5. The urea nozzle cooling control method according to claim 4, characterized in that: Determining a first correction coefficient corresponding to the ambient temperature according to the current ambient temperature includes: The first correction coefficient is determined according to a second mapping relationship table, wherein the second mapping relationship table includes first correction coefficients corresponding to different ambient temperatures.

6. The method for controlling urea nozzle cooling according to claim 4, characterized in that: Determining a second correction coefficient corresponding to the battery capacity according to the current capacity of the battery includes: The second correction coefficient is determined according to a third mapping relationship table, wherein the third mapping relationship table includes second correction coefficients corresponding to different battery capacities.

7. The method for controlling urea nozzle cooling according to claim 3, characterized in that: Controlling the operating time of the electronic water pump according to the corrected first operating time includes: The operating time of the electronic water pump is controlled to reach the corrected first operating time to cool the urea nozzle, wherein the product of the first operating time and the correction coefficient is used as the corrected first operating time.

8. The method for controlling urea nozzle cooling according to claim 1, characterized in that: The electronic water pump is connected to an independent radiator.

9. A control device for cooling a urea nozzle, characterized in that: include: An acquisition module is used to obtain the current ambient temperature, the current exhaust temperature of the engine, the current temperature of the coolant, and the current capacity of the battery; a first determining module, configured to determine a first operating time of the electronic water pump according to a current exhaust temperature of the engine and a current temperature of the coolant; a correction module, configured to correct the first operating time according to the current ambient temperature and the current capacity of the battery; The control module is configured to control the operating time of the electronic water pump according to the corrected first operating time, so as to control the cooling of the urea nozzle.

10. A vehicle, characterized in that: The vehicle includes a processor and a memory; wherein the memory is used to store a computer program; and the processor is used to execute the urea nozzle cooling control method according to any one of claims 1 to 8 according to the computer program.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a control program for cooling a urea nozzle. When the control program for cooling a urea nozzle is executed by a processor, the control method for cooling a urea nozzle according to any one of claims 1 to 8 is implemented.

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