A flow control method, system, readable storage medium and vehicle for a water pump

By adjusting the speed and transmission ratio of the water pump and adjusting the flow rate in real time according to the speed and load value of the engine, the problem of overcooling the engine water pump at low load is solved, energy consumption is reduced, and the engine fuel utilization is improved.

CN114837963BActive Publication Date: 2024-12-10JIANGLING MOTORS
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Patent Information

Application Number
CN202210332745.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-03-31
Publication Date
2024-12-10
Estimated Expiration
2042-03-31

AI Technical Summary

Technical Problem

Existing engine water pumps are overcooled at low loads, resulting in large engine energy loss, high fuel consumption, and excessive power consumption of water pumps, affecting the engine output power.

Method used

By obtaining the flow control instructions corresponding to the engine's speed and load value, adjusting the speed and transmission ratio of the water pump, adjusting the flow rate in real time to match the engine's cooling needs, ensuring the appropriate cooling water flow and reducing the pump's energy consumption.

Benefits of technology

It effectively reduces the energy consumption of the water pump and engine, avoids over-cooling, improves the energy utilization rate of the engine, and reduces fuel consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a flow control method, system, readable storage medium and vehicle for a water pump, the method comprising: obtaining a certain flow control instruction of the water pump; adjusting the rotation speed of the water pump based on the certain flow control instruction, and obtaining the first actual flow value of the water pump measured in real time; judging whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold value; if it is not greater than the preset threshold value, adjusting the transmission ratio of the water pump to the engine based on the current rotation speed of the water pump, so that the flow of the water pump reaches the second actual flow value. Under different engine speeds and different loads, by changing the transmission ratio between the engine and the water pump, the flow of the water pump is adjusted to adapt to the cooling capacity required under different engine loads, reducing the energy waste of the water pump, and avoiding excessive cooling of the engine by cooling water, reducing the energy loss of the engine, so as to reduce the energy consumption of the water pump and the engine.
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Description

Technical Field

[0001] The present invention belongs to the technical field of engines, and in particular relates to a flow control method and system of a water pump, a readable storage medium and a vehicle. Background Art

[0002] The engine water pump is designed to meet the cooling water flow required at the maximum power or maximum torque point. At the same speed, the water pump's pumping capacity is the same, which can meet the cooling flow required for high loads, but at low loads, the engine will be overcooled, and the cooling water will absorb a large amount of heat (work), causing a large loss of engine energy, and the actual effective work generated will be less than when the cooling is appropriate. At the same time, the water pump itself pumps too much water, and the water pump consumes too much work, which also causes the actual effective work generated by the engine to be too small, resulting in a high engine fuel consumption rate. Summary of the invention

[0003] The present invention provides a flow control method, system, readable storage medium and vehicle for a water pump, which are used to solve the technical problem that the actual effective power output by the engine is too small due to excessive water pumping and excessive power consumption of the water pump, resulting in high fuel consumption rate of the engine.

[0004] A flow control method for a water pump according to an embodiment of the present invention includes: obtaining a flow control instruction of the water pump, wherein the flow control instruction is a control instruction corresponding to a speed value and a load value of the engine, and the control instruction contains an expected flow value; adjusting the speed of the water pump based on the flow control instruction, and obtaining a first actual flow value of the water pump measured in real time; judging whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold; if the absolute value of the difference between the first actual flow value and the expected flow value is not greater than the preset threshold, adjusting the transmission ratio of the water pump to the engine based on the current speed of the water pump so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than the preset threshold.

[0005] In addition, the flow control method of a water pump according to the above embodiment of the present invention may also have the following additional technical features:

[0006] Further, the expected flow value is a minimum flow value required for cooling the engine.

[0007] Furthermore, the adjusting the rotational speed of the water pump based on the certain flow control instruction and obtaining the first actual flow value of the water pump measured in real time includes: adjusting the rotational speed of the engine based on the certain flow control instruction, and adjusting the rotational speed of the water pump according to the transmission ratio of the engine and the water pump; and obtaining the first actual flow value of the water pump in real time according to a flow meter arranged on the inner wall of the water pump.

[0008] Furthermore, after determining whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold, the method also includes: if the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold, adjusting the transmission ratio of the water pump and the engine based on the current speed of the water pump so that the flow of the water pump reaches a third actual flow value; determining whether the absolute value of the difference between the third actual flow value and the expected flow value is less than a preset threshold; if the absolute value of the difference between the third actual flow value and the expected flow value is less than the preset threshold, correcting the current transmission ratio based on the thermal cooling parameter so that the absolute value of the difference between the actual flow of the water pump and the expected flow value is less than the preset threshold.

[0009] Furthermore, the transmission ratio i between the water pump and the engine is expressed as: i=n 主动 / n 从动 =r 从动 / r 主动 =d 从动 / d 主动 , where n 主动 is the driving pulley speed, n 从动 is the driven pulley speed, r 从动 is the radius of the driven pulley, r 主动 is the radius of the driving pulley, d 主动 is the meshing diameter of the driving pulley and the belt, d 从动 is the meshing diameter of the driven pulley and belt.

[0010] The present invention provides a flow control system for a water pump, comprising: an acquisition module, configured to acquire a certain flow control instruction of the water pump, wherein the certain flow control instruction is a certain control instruction corresponding to a certain speed value and a certain load value of the engine, and the certain control instruction contains an expected flow value; a first adjustment module, configured to adjust the speed of the water pump based on the certain flow control instruction, and acquire a first actual flow value of the water pump measured in real time; a judgment module, configured to judge whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold; a second adjustment module, configured to adjust the transmission ratio of the water pump and the engine if the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold, so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than the preset threshold.

[0011] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the steps of the flow control method for a water pump of any embodiment of the present invention.

[0012] The present invention also provides a vehicle, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the steps of the flow control method of a water pump of any embodiment of the present invention.

[0013] The water pump flow control method, system, readable storage medium and vehicle of the present application, at different engine speeds and different loads, change the transmission ratio between the engine and the water pump, thereby adjusting the water pump flow to adapt to the cooling capacity required under different engine loads, reducing energy waste of the water pump, and avoiding excessive cooling of the engine by cooling water, reducing engine energy loss, thereby reducing energy consumption of the water pump and the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A flow chart of a method for controlling flow of a water pump provided by one embodiment of the present invention;

[0016] Figure 2 A graph showing the relationship between the water pump speed and flow rate in a specific implementation manner provided by an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of a water pump speed change according to a specific implementation method provided by an embodiment of the present invention;

[0018] Figure 4 A schematic diagram of a continuously variable transmission according to a specific implementation method provided by an embodiment of the present invention;

[0019] Figure 5 A schematic diagram of a continuously variable transmission according to another specific implementation method provided by an embodiment of the present invention;

[0020] Figure 6 A structural block diagram of a flow control system of a water pump provided by an embodiment of the present invention;

[0021] Figure 7 It is a schematic structural diagram of a vehicle provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1 , which shows a flow chart of a flow control method of a water pump of the present application.

[0024] like Figure 1 As shown, the flow control method of the water pump specifically includes the following steps:

[0025] Step S101, obtaining a certain flow control instruction of the water pump, wherein the certain flow control instruction is a certain control instruction corresponding to a certain speed value and a certain load value of the engine, and the certain control instruction includes an expected flow value.

[0026] In this embodiment, obtaining a flow control instruction of a water pump includes: receiving a terminal control instruction sent by a terminal device, and generating a flow control instruction based on the terminal control instruction, wherein the terminal device is communicatively connected to the engine control terminal, and the terminal control instruction is generated based on the user's input on the terminal device.

[0027] It should be noted that a certain flow control instruction corresponds to a certain speed value and a certain load value of the engine, and specifically, different speed values ​​and different load values ​​of the engine correspond to different flow control instructions. For example, when the engine speed value is 2500 rpm and the load value is 40%, it corresponds to a flow control instruction, wherein the expected flow value contained in the flow control instruction is 225, and when the engine speed value is 2500 rpm and the load value is 30%, it corresponds to another flow control instruction, wherein the expected flow value contained in the other flow control instruction is 175.

[0028] Specifically, the desired flow value is a minimum flow value required to cool the engine.

[0029] Step S102: adjusting the rotation speed of the water pump based on the certain flow control instruction, and obtaining in real time a first actual flow value of the water pump measured.

[0030] In this embodiment, the engine speed is adjusted based on a certain flow control instruction, and the speed of the water pump is adjusted according to the transmission ratio of the engine and the water pump. The first actual flow value of the water pump is obtained in real time according to the flow meter set on the inner wall of the water pump. The relationship between the water pump speed and the flow rate is as follows: Figure 2 shown.

[0031] Step S103, determining whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold.

[0032] In this embodiment, by judging whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold, it is possible to judge whether the actual flow at the current water pump speed meets the requirement for cooling the engine.

[0033] It should be noted that when the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold, the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump so that the flow of the water pump reaches the third actual flow value, and it is determined whether the absolute value of the difference between the third actual flow value and the expected flow value is less than the preset threshold. If the absolute value of the difference between the third actual flow value and the expected flow value is less than the preset threshold, the current transmission ratio is corrected based on the thermal cooling parameter so that the absolute value of the difference between the actual flow of the water pump and the expected flow value is less than the preset threshold.

[0034] Step S104, if the absolute value of the difference between the first actual flow value and the expected flow value is not greater than a preset threshold, the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than a preset threshold.

[0035] In this embodiment, when the absolute value of the difference between the first actual flow value and the expected flow value is not greater than the preset threshold, it means that the actual flow at the current water pump speed can meet the requirements of cooling the engine. At this time, it is only necessary to adjust the transmission ratio of the water pump to the engine according to the current water pump speed (such as Figure 3 As shown in FIG. 1 ), the absolute value of the difference between the flow rate of the water pump and the expected flow rate is less than the preset threshold value.

[0036] In summary, the method of the present application changes the transmission ratio between the engine and the water pump under different engine speeds and different loads, thereby adjusting the flow rate of the water pump to adapt to the cooling capacity required under different engine loads, reducing energy waste of the water pump, and avoiding excessive cooling of the engine by cooling water, reducing engine energy loss, and achieving the goal of reducing energy consumption of the water pump and engine.

[0037] In a specific embodiment, when the engine is running at a certain speed (n), the speed of the water pump is 2500 rpm, and the flow point of the water pump is A (2500, 225). When the engine is operating at the speed (n) with external characteristics or under heavy load, the flow rate of the water pump can meet the heat dissipation requirement of the engine. When the engine is operating at a small load at the speed (n), the heat generated by the engine is small, and the required cooling capacity is small, so there is no need for such a large flow rate of the water pump. A large flow rate brings about a large power consumption of the water pump. At the same time, due to the large cooling capacity of the cooling system, the engine is overcooled, the engine output power becomes smaller, resulting in excessive fuel consumption and a decrease in power and torque.

[0038] It should be noted that when the engine is running at a certain speed with external characteristics or heavy load, the running state of the driven wheel (water pump wheel) is as shown in the stepless speed change diagram. Figure 4 The water pump pulley groove width is large, and the meshing diameter of the water pump pulley and the belt is small, which ensures that the speed of the driven pulley (water pump wheel) is higher to ensure the water supply of the water pump.

[0039] When the engine is under low load at this speed, a large flow rate of the water pump is not required and the flow rate needs to be reduced. According to the transmission ratio i=n 主动 / n 从动 =r 从动 / r 主动 =d 从动 / d 主动 , where n 主动 is the driving pulley speed, n 从动 is the driven pulley speed, r 从动 is the radius of the driven pulley, r 主动 is the radius of the driving pulley, d 主动 is the meshing diameter of the driving pulley and the belt, d 从动To increase the meshing diameter between the driven pulley and the belt, it is necessary to reduce the speed of the driven wheel (water pump wheel) and increase the meshing diameter of the driven wheel (water pump wheel). By reducing the width of the pulley groove (the distance between the two end surfaces can be adjusted), the purpose of increasing the meshing diameter between the belt and the pulley can be achieved (from the stepless speed diagram Figure 4 to Figure 5 ), thereby reducing the speed of the water pump and achieving the goal of reducing energy consumption.

[0040] See also Figure 6 , which shows a structural block diagram of a flow control system of a water pump of the present application.

[0041] like Figure 6 As shown, the flow control system 200 includes an acquisition module 210 , a first adjustment module 220 , a determination module 230 and a second adjustment module 240 .

[0042] Among them, the acquisition module 210 is configured to obtain a certain flow control instruction of the water pump, wherein the certain flow control instruction is a control instruction corresponding to a certain speed value and a certain load value of the engine, and the certain control instruction contains an expected flow value; the first adjustment module 220 is configured to adjust the speed of the water pump based on the certain flow control instruction, and obtain the measured first actual flow value of the water pump in real time; the judgment module 230 is configured to judge whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold; the second adjustment module 240 is configured to adjust the transmission ratio of the water pump and the engine if the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold, so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than the preset threshold.

[0043] It should be understood that Figure 6 Modules and references documented in Figure 1 Therefore, the operations and features described above for the method and the corresponding technical effects are also applicable to Figure 6 The modules in it will not be described in detail here.

[0044] In other embodiments, the present invention also provides a non-volatile computer storage medium, the computer storage medium stores computer executable instructions, and the computer executable instructions can execute the flow control method of the water pump in any of the above method embodiments;

[0045] As an implementation mode, the non-volatile computer storage medium of the present invention stores computer executable instructions, and the computer executable instructions are configured as follows:

[0046] Obtaining a flow control instruction of the water pump, wherein the flow control instruction is a control instruction corresponding to a certain speed value and a certain load value of the engine, and the control instruction includes an expected flow value;

[0047] adjusting the rotation speed of the water pump based on the certain flow control instruction, and acquiring in real time a first actual flow value of the water pump measured;

[0048] Determine whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold;

[0049] If the absolute value of the difference between the first actual flow value and the expected flow value is not greater than a preset threshold, the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than a preset threshold.

[0050] The non-volatile computer-readable storage medium may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the flow control system of the water pump, etc. In addition, the non-volatile computer-readable storage medium may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the non-volatile computer-readable storage medium may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the flow control system of the water pump via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0051] An embodiment of the present invention further provides a computer program product, which includes a computer program stored on a non-volatile computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes any of the above-mentioned flow control methods for a water pump.

[0052] Figure 7 is a schematic diagram of the structure of a vehicle provided by an embodiment of the present invention, such as Figure 7 As shown, the vehicle includes: one or more processors 310 and a memory 320, Figure 7 A processor 310 is taken as an example. The vehicle of the water pump flow control method may also include: an input device 330 and an output device 330. The processor 310, the memory 320, the input device 330 and the output device 330 may be connected via a bus or other means. Figure 7In the example, the bus connection is used. The memory 320 is the above-mentioned non-volatile computer-readable storage medium. The processor 310 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 320, that is, the flow control method of the water pump in the above-mentioned embodiment is realized. The input device 330 can receive input digital or character information, and generate key signal input related to user settings and function control of the flow control system of the water pump. The output device 330 may include a display device such as a display screen.

[0053] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0054] As an embodiment, a vehicle includes: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0055] Obtaining a flow control instruction of the water pump, wherein the flow control instruction is a control instruction corresponding to a certain speed value and a certain load value of the engine, and the control instruction includes an expected flow value;

[0056] adjusting the rotation speed of the water pump based on the certain flow control instruction, and acquiring in real time a first actual flow value of the water pump measured;

[0057] Determine whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold;

[0058] If the absolute value of the difference between the first actual flow value and the expected flow value is not greater than a preset threshold, the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump so that the flow of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than a preset threshold.

[0059] Those skilled in the art will appreciate that the logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For purposes of this specification, "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0060] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0061] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or a combination thereof: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A flow control method for a water pump, characterized in that: include: Obtaining a flow control instruction of the water pump, wherein the flow control instruction is a control instruction corresponding to a certain speed value and a certain load value of the engine, and the control instruction includes an expected flow value, and the expected flow value is a minimum flow value required to cool the engine; adjusting the rotation speed of the water pump based on the certain flow control instruction, and acquiring in real time a first actual flow value of the water pump measured; Determine whether the absolute value of the difference between the first actual flow value and the expected flow value is greater than a preset threshold; If the absolute value of the difference between the first actual flow value and the expected flow value is not greater than a preset threshold, the transmission ratio of the water pump to the engine is adjusted based on the current speed of the water pump. The expression of the transmission ratio i is i=n 主动 / n 从动 =r 从动 / r 主动 =d 从动 / d 主动 , where n 主动 is the driving pulley speed, n 从动 is the driven pulley speed, r 从动 is the radius of the driven pulley, r 主动 is the radius of the driving pulley, d 主动 is the meshing diameter of the driving pulley and the belt, d 从动 is the meshing diameter of the driven pulley and the belt, so that the flow rate of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than a preset threshold value; if the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold value, then the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump, so that the flow rate of the water pump reaches a third actual flow value.

2. A flow control method for a water pump according to claim 1, characterized in that: The step of adjusting the rotation speed of the water pump based on the certain flow control instruction and obtaining the measured first actual flow value of the water pump in real time includes: adjusting the speed of the engine based on the certain flow control instruction, and adjusting the speed of the water pump according to the transmission ratio between the engine and the water pump; A first actual flow value of the water pump is acquired in real time according to a flow meter arranged on the inner wall of the water pump.

3. A flow control system for a water pump, characterized in that: include: an acquisition module, configured to acquire a certain flow control instruction of the water pump, wherein the certain flow control instruction is a certain control instruction corresponding to a certain speed value and a certain load value of the engine, and the certain control instruction includes an expected flow value; a first regulating module, configured to regulate the rotation speed of the water pump based on the certain flow control instruction, and obtain a measured first actual flow value of the water pump in real time; A judgment module, configured to judge whether an absolute value of a difference between the first actual flow value and the expected flow value is greater than a preset threshold; The second regulating module is configured to adjust the transmission ratio of the water pump to the engine based on the current speed of the water pump if the absolute value of the difference between the first actual flow value and the expected flow value is not greater than a preset threshold value, and the expression of the transmission ratio i is i=n 主动 / n 从动 =r 从动 / r 主动 =d 从动 / d 主动 , where n 主动 is the driving pulley speed, n 从动 is the driven pulley speed, r 从动 is the radius of the driven pulley, r 主动 is the radius of the driving pulley, d 主动 is the meshing diameter of the driving pulley and the belt, d 从动 is the meshing diameter of the driven pulley and the belt, so that the flow rate of the water pump reaches a second actual flow value, wherein the absolute value of the difference between the second actual flow value and the expected flow value is less than a preset threshold value; if the absolute value of the difference between the first actual flow value and the expected flow value is greater than the preset threshold value, then the transmission ratio of the water pump and the engine is adjusted based on the current speed of the water pump, so that the flow rate of the water pump reaches a third actual flow value.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 2 is implemented.

5. A vehicle, characterized in that: include: At least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in any one of claims 1 to 2.