Engine cooling system, vehicle, control method and storage medium

Abstract

The present invention belongs to the technical field of engine heat dissipation, and specifically relates to an engine heat dissipation system, a vehicle, a control method and a storage medium. The engine heat dissipation system in the present invention includes an engine assembly, a hydraulic retarder radiator and a whole vehicle radiator. The engine assembly includes an engine and a thermostat. The liquid outlet of the engine is provided with a control valve. The liquid inlet of the hydraulic retarder radiator is connected to the first liquid outlet of the control valve. The liquid inlet of the thermostat is connected to the second liquid outlet of the control valve. The first liquid outlet of the thermostat is connected to the engine. The liquid inlet of the whole vehicle radiator is respectively connected to the liquid outlet of the hydraulic retarder radiator and the second liquid outlet of the thermostat. The liquid outlet of the whole vehicle radiator is connected to the engine. By using the engine heat dissipation system in the present technical solution, the coolant of the engine can be directly passed through the first liquid outlet of the control valve to the hydraulic retarder radiator and the whole vehicle radiator, and the coolant can be quickly cooled down.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine heat dissipation, and in particular relates to an engine heat dissipation system, a vehicle, a control method and a storage medium. Background Art

[0002] In the existing vehicle with hydraulic retarder structure, the engine has a reserved hydraulic retarder water inlet, and the coolant flows directly from the engine into the radiator of the hydraulic retarder, and then returns to the pipeline in front of the engine thermostat, and participates in the large or small circulation of the coolant according to the initial opening and full opening temperature settings of the thermostat. Because wax thermostats are currently used, the responsiveness is poor. When the hydraulic retarder is turned on or when the hydraulic retarder reaches instantaneous high temperature during operation, the thermostat has poor responsiveness and cannot be opened in time, the coolant cannot dissipate heat in time, and the water channel temperature is prone to peak, resulting in poor heat dissipation of the hydraulic retarder and greatly reduced braking power. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problem of poor heat dissipation of the existing hydraulic retarder. This purpose is achieved through the following technical solutions:

[0004] A first aspect of the present invention provides an engine cooling system, comprising:

[0005] Hydraulic retarder radiator;

[0006] An engine assembly, the engine assembly comprising an engine and a thermostat, a control valve being provided at a liquid outlet of the engine, a liquid inlet of the hydraulic retarder radiator being connected to a first liquid outlet of the control valve, a liquid inlet of the thermostat being connected to a second liquid outlet of the control valve, and a first liquid outlet of the thermostat being connected to the engine;

[0007] A whole vehicle radiator, wherein the liquid inlet end of the whole vehicle radiator is respectively connected with the liquid outlet end of the hydraulic retarder radiator and the second liquid outlet end of the thermostat, and the liquid outlet end of the whole vehicle radiator is connected with the engine.

[0008] By using the engine cooling system in the technical solution, a combined structure of an engine assembly, a hydraulic retarder radiator and a whole vehicle radiator is adopted, and a control valve is arranged at the liquid outlet end of the engine, a first liquid outlet end of the control valve is connected to a thermostat, and a second liquid outlet end of the control valve is sequentially connected to the hydraulic retarder radiator, and two flow directions of the engine coolant can be realized by adjusting the first liquid outlet end and the second liquid outlet end of the control valve. The first flow direction is directly connected to the hydraulic retarder radiator and the whole vehicle radiator through the first liquid outlet end of the control valve, so as to realize a large circulation operation of the coolant, and the coolant can be quickly cooled, so as to ensure good heat dissipation of the hydraulic retarder and improve the braking effect and reliability. The second flow direction is realized by a small circulation operation of the coolant through a thermostat, which is suitable for the situation where the coolant temperature is not high. The engine cooling system of the present invention can better perform heat dissipation operation on the hydraulic retarder according to different situations, so as to improve the heat dissipation capacity and reliability.

[0009] In addition, the engine cooling system according to the present invention may also have the following additional technical features:

[0010] In some embodiments of the present invention, the engine cooling system includes an electronic control unit, which is electrically connected to the control valve and can control the on / off state of the first liquid outlet and / or the second liquid outlet of the control valve.

[0011] In some embodiments of the present invention, the engine cooling system includes a driving pump, and the driving pump is used to connect the engine and the vehicle radiator.

[0012] In some embodiments of the present invention, the control valve is a three-way solenoid valve.

[0013] A second aspect of the present invention provides a vehicle having the above-mentioned engine cooling system.

[0014] A third aspect of the present invention provides a control method for an engine cooling system, which is implemented according to the above engine cooling system and includes:

[0015] The water temperature of the engine is obtained based on the hydraulic retarder radiator being in an idle state;

[0016] When the water temperature of the engine is greater than or equal to the first water temperature preset value, the first liquid outlet end of the control valve is opened and the second liquid outlet end of the control valve is closed, so that the coolant flows to the hydraulic retarder radiator and the vehicle radiator in sequence.

[0017] In some embodiments of the present invention, the step of obtaining the water temperature of the engine according to the hydraulic retarder radiator being in an idle state further includes:

[0018] According to the water temperature of the engine being lower than the second water temperature preset value, the second liquid outlet end of the control valve is opened, and the first liquid outlet end of the control valve is closed, so that the coolant flows to the thermostat.

[0019] In some embodiments of the present invention, the method further comprises: opening the first liquid outlet of the control valve and closing the second liquid outlet of the control valve according to the water temperature of the engine being greater than or equal to the first water temperature preset value;

[0020] According to the hydraulic retarder radiator being in an operating state, obtaining an opening signal of the hydraulic retarder radiator;

[0021] According to the opening signal of the hydraulic retarder radiator, the first liquid outlet end of the control valve is opened, and the second liquid outlet end of the control valve is closed, so that the coolant flows to the hydraulic retarder radiator and the vehicle radiator in sequence.

[0022] In some embodiments of the present invention, the method further comprises: opening the first liquid outlet of the control valve and closing the second liquid outlet of the control valve according to the water temperature of the engine being greater than or equal to the first water temperature preset value;

[0023] According to the hydraulic retarder radiator being in an operating state, a closing signal of the hydraulic retarder radiator is obtained;

[0024] According to the closing signal of the hydraulic retarder radiator, the first liquid outlet end of the control valve is closed after a preset time delay, and the second liquid outlet end of the control valve is opened after a preset time delay, so that the coolant flows to the thermostat.

[0025] A fourth aspect of the present invention provides a storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the above-mentioned control method for the engine cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 The structure diagram of the engine cooling system according to the embodiment of the present invention is schematically shown;

[0028] Figure 2 A control flow chart showing a hydraulic retarder in an idle state in a control method for an engine cooling system according to an embodiment of the present invention is schematically shown;

[0029] Figure 3A control flow chart of a hydraulic retarder in an operating state in a control method of an engine cooling system according to an embodiment of the present invention is schematically shown;

[0030] Figure 4 A control flow chart schematically shows another situation in which the hydraulic retarder is in an operating state in the control method of the engine cooling system according to an embodiment of the present invention.

[0031] The reference numerals in the accompanying drawings represent the following:

[0032] 10. Hydraulic retarder radiator;

[0033] 21. Engine; 211. Control valve; 22. Thermostat;

[0034] 30. Vehicle radiator;

[0035] 40. Driving pump;

[0036] 50. Electronic control unit. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0038] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0040] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0041] Figure 1 The schematic diagram of the structure of the engine cooling system according to the embodiment of the present invention is shown schematically. Figure 1 As shown, the present invention proposes an engine cooling system, a vehicle, a control method and a storage medium. The engine cooling system in the present invention includes an engine assembly, a hydraulic retarder radiator 10 and a whole vehicle radiator 30. The engine assembly includes an engine 21 and a thermostat 22. A control valve 211 is provided at the liquid outlet of the engine 21. The liquid inlet of the hydraulic retarder radiator 10 is connected to the first liquid outlet of the control valve 211. The liquid inlet of the thermostat 22 is connected to the second liquid outlet of the control valve 211. The first liquid outlet of the thermostat 22 is connected to the engine 21. The liquid inlet of the whole vehicle radiator 30 is respectively connected to the liquid outlet of the hydraulic retarder radiator 10 and the second liquid outlet of the thermostat 22. The liquid outlet of the whole vehicle radiator 30 is connected to the engine 21.

[0042] By using the engine cooling system in the technical solution, a combination structure of an engine assembly, a hydraulic retarder radiator 10 and a vehicle radiator 30 is adopted, and a control valve 211 is provided at the liquid outlet of the engine 21, a first liquid outlet of the control valve 211 is connected to the thermostat 22, and a second liquid outlet of the control valve 211 is sequentially connected to the hydraulic retarder radiator 10, and by adjusting the first liquid outlet and the second liquid outlet of the control valve 211, two flow directions of the engine coolant can be achieved. The first one is directly connected to the hydraulic retarder radiator 10 and the vehicle radiator 30 through the first liquid outlet of the control valve 211, so as to achieve a large circulation operation of the coolant, and the coolant can be quickly cooled, so as to ensure good heat dissipation of the hydraulic retarder, and improve the braking effect and reliability. The second one is to achieve a small circulation operation of the coolant through the thermostat 22, which is suitable for the case where the coolant temperature is not high. The engine cooling system of the present invention can better perform heat dissipation operation on the hydraulic retarder according to different situations, and improve the heat dissipation capacity and reliability.

[0043] In some embodiments of the present invention, Figure 1 As shown, the engine cooling system includes an electronic control unit 50, which is electrically connected to the control valve 211 and can control the on / off state of the first liquid outlet and / or the second liquid outlet of the control valve 211. In this embodiment, the electronic control unit 50 can control the switching between the first liquid outlet and the second liquid outlet of the control valve 211 in real time, that is, the second liquid outlet of the control valve 211 can be closed while the first liquid outlet of the control valve 211 is opened, and the first liquid outlet of the control valve 211 can be closed while the second liquid outlet of the control valve 211 is opened, so as to ensure the correct flow of the coolant of the engine cooling system.

[0044] In some embodiments of the present invention, Figure 1 As shown, the engine cooling system includes a driving pump 40, which is used to connect the engine 21 and the vehicle radiator 30. In this embodiment, the driving pump 40 can drive the coolant to flow, promote the circulation of the coolant of the entire engine cooling system, and improve reliability.

[0045] In some embodiments of the present invention, the control valve 211 is a three-way solenoid valve. In this embodiment, the three-way solenoid valve can switch the coolant between the first liquid outlet and the second liquid outlet of the control valve 211, thereby controlling the flow direction of the coolant to ensure that the coolant can dissipate heat better. At the same time, since the control valve 211 is a solenoid valve, it can perform delayed action according to the control of the electronic control unit 50, which facilitates the implementation of delayed operation of the subsequent control method.

[0046] A second aspect of the present invention provides a vehicle having the above-mentioned engine cooling system.

[0047] By using the vehicle in the technical solution, a combination structure of an engine assembly, a hydraulic retarder radiator 10 and a whole vehicle radiator 30 is adopted, and a control valve 211 is provided at the liquid outlet end of the engine 21, a first liquid outlet end of the control valve 211 is connected to the thermostat 22, and a second liquid outlet end of the control valve 211 is sequentially connected to the hydraulic retarder radiator 10, and by adjusting the first liquid outlet end and the second liquid outlet end of the control valve 211, two flow directions of the engine coolant can be realized. The first one is directly connected to the hydraulic retarder radiator 10 and the whole vehicle radiator 30 through the first liquid outlet end of the control valve 211, so as to realize a large circulation operation of the coolant, and the coolant can be quickly cooled down to ensure good heat dissipation of the hydraulic retarder, thereby improving the braking effect and reliability. The second one is to realize a small circulation operation of the coolant through the thermostat 22, which is suitable for the situation where the coolant temperature is not high. The engine cooling system of the present invention can better perform heat dissipation operation on the hydraulic retarder according to different situations, thereby improving the heat dissipation capacity and reliability.

[0048] The present invention also proposes a control method for an engine cooling system, which is implemented according to the above engine cooling system and includes:

[0049] According to the hydraulic retarder radiator 10 being in an idle state (in this embodiment, the hydraulic retarder radiator 10 is in an idle state, which means that the hydraulic retarder is in an idle state), the water temperature of the engine 21 is obtained;

[0050] When the water temperature of the engine 21 is greater than or equal to the first water temperature preset value, the first liquid outlet end of the control valve 211 is opened and the second liquid outlet end of the control valve 211 is closed, so that the coolant flows to the hydraulic retarder radiator 10 and the vehicle radiator 30 in sequence.

[0051] In this embodiment, when the water temperature of the engine 21 exceeds the first water temperature preset value (which can be set to 95°C in this embodiment, and other embodiments require specific calculations based on specific circumstances), the control valve 211 will connect the first liquid outlet and the hydraulic retarder radiator 10, while blocking the connection between the second liquid outlet and the thermostat 22, so that the coolant flows through the hydraulic retarder radiator 10 (the hydraulic retarder radiator 10 has no heat at this time, and the coolant only flows through the hydraulic retarder radiator 10) and then directly enters the vehicle radiator 30 under the large circulation for cooling, which can reduce the high-speed operation time of the electronically controlled silicone oil fan, reduce the power consumption of accessories, and can also quickly cool the coolant, thereby improving the heat dissipation efficiency.

[0052] In some embodiments of the present invention, according to the hydraulic retarder radiator 10 being in an idle state, obtaining the water temperature of the engine 21 further includes:

[0053] When the water temperature of the engine 21 is lower than the second water temperature preset value, the second liquid outlet of the control valve 211 is opened, and the first liquid outlet of the control valve 211 is closed, so that the coolant flows to the thermostat 22 .

[0054] In this embodiment, when the water temperature of the engine 21 is lower than the second water temperature preset value (which can be set to 90°C in this embodiment, and other embodiments require specific calculations based on specific circumstances), the control valve 211 will connect its own second liquid outlet and the thermostat 22, and at the same time block the connection between its own first liquid outlet and the hydraulic retarder radiator 10. Since the water temperature of the engine 21 is not high, there is no need to perform a specific rapid cooling operation through a large circulation, so that the coolant flows to the thermostat 22, and then the thermostat 22 determines whether to perform a small circulation (i.e., not flowing through the vehicle radiator 30) and a large circulation (i.e., flowing through the vehicle radiator 30) operation.

[0055] In some embodiments of the present invention, according to the water temperature of the engine 21 being greater than or equal to the first water temperature preset value, after opening the first liquid outlet of the control valve 211 and closing the second liquid outlet of the control valve 211, the method further includes:

[0056] According to the hydraulic retarder radiator 10 being in an operating state (in this embodiment, the hydraulic retarder radiator 10 is in an operating state, which means that the hydraulic retarder is in an operating state), an opening signal of the hydraulic retarder radiator 10 is obtained;

[0057] According to the opening signal of the hydraulic retarder radiator 10, the first liquid outlet end of the control valve 211 is opened, and the second liquid outlet end of the control valve 211 is closed, so that the coolant flows to the hydraulic retarder radiator 10 and the vehicle radiator 30 in sequence.

[0058] In the present embodiment, when the engine cooling system detects the opening signal of the hydraulic retarder radiator 10 (this also indicates that the hydraulic retarder is turned on), it means that braking operation is required and the hydraulic retarder needs to generate a large amount of heat. At this time, the first liquid outlet end of the control valve 211 needs to be connected to the hydraulic retarder radiator 10, and at the same time, the liquid path between the second liquid outlet end and the thermostat 22 is blocked. In this way, when the hydraulic retarder is working, the coolant can take away the heat of the hydraulic retarder radiator 10 of the hydraulic retarder in time, and flow directly to the vehicle radiator 30 through a large circulation operation, so as to achieve rapid cooling, reduce the problem of water path temperature peak when the hydraulic retarder is working, and improve the braking power of the hydraulic retarder.

[0059] In some embodiments of the present invention, according to the water temperature of the engine 21 being greater than or equal to the first water temperature preset value, after opening the first liquid outlet of the control valve 211 and closing the second liquid outlet of the control valve 211, the method further includes:

[0060] According to the hydraulic retarder radiator 10 being in an operating state, obtaining a closing signal of the hydraulic retarder radiator 10;

[0061] According to the closing signal of the hydraulic retarder radiator 10 , the first liquid outlet of the control valve 211 is closed after a preset time delay, and the second liquid outlet of the control valve 211 is opened after a preset time delay, so that the coolant flows to the thermostat 22 .

[0062] In this embodiment, when the engine cooling system detects the closing signal of the hydraulic retarder radiator 10 (this also means that the closing signal of the hydraulic retarder is detected), it means that the braking operation is no longer needed. However, since the hydraulic retarder has just completed the operation and still has a certain amount of heat, the first liquid outlet of the control valve 211 is closed after a delay of a preset time, and the second liquid outlet of the control valve 211 is opened after a delay of the same preset time. This can prevent the problem of local overheating of the hydraulic retarder and cause failure. At the same time, it can also avoid the engine coolant temperature from being too low, thereby improving reliability. The preset time in this embodiment can be set to 30s, and other embodiments need to be specifically calculated according to specific circumstances.

[0063] A fourth aspect of the present invention provides a storage medium having computer program instructions stored thereon. When the computer instructions are executed by a processor, the control method of the engine cooling system as described above is implemented.

[0064] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The technician may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0065] The various illustrative logic modules and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration.

[0066] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented as a computer program product in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. Storage media may be any available medium that can be accessed by a computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk often reproduces data magnetically, while disc reproduces data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A control method for an engine cooling system, characterized in that: The implementation is based on an engine cooling system, wherein the engine cooling system comprises: Hydraulic retarder radiator; An engine assembly, the engine assembly comprising an engine and a thermostat, a control valve being provided at a liquid outlet of the engine, a liquid inlet of the hydraulic retarder radiator being connected to a first liquid outlet of the control valve, a liquid inlet of the thermostat being connected to a second liquid outlet of the control valve, and a first liquid outlet of the thermostat being connected to the engine; A vehicle radiator, wherein a liquid inlet end of the vehicle radiator is respectively connected to a liquid outlet end of the hydraulic retarder radiator and a second liquid outlet end of the thermostat, and a liquid outlet end of the vehicle radiator is connected to the engine; The control method of the engine cooling system comprises: The water temperature of the engine is obtained based on the hydraulic retarder radiator being in an idle state; When the water temperature of the engine is greater than or equal to the first water temperature preset value, the first liquid outlet end of the control valve is opened and the second liquid outlet end of the control valve is closed, so that the coolant flows to the hydraulic retarder radiator and the vehicle radiator in sequence.

2. The control method of the engine cooling system according to claim 1, characterized in that: After obtaining the water temperature of the engine according to the hydraulic retarder radiator being in an idle state, the method further includes: According to the water temperature of the engine being lower than the second water temperature preset value, the second liquid outlet end of the control valve is opened, and the first liquid outlet end of the control valve is closed, so that the coolant flows to the thermostat.

3. The control method of the engine cooling system according to claim 1, characterized in that: After the first liquid outlet of the control valve is opened and the second liquid outlet of the control valve is closed according to the water temperature of the engine being greater than or equal to the first water temperature preset value, the method further includes: According to the hydraulic retarder radiator being in an operating state, obtaining an opening signal of the hydraulic retarder radiator; According to the opening signal of the hydraulic retarder radiator, the first liquid outlet end of the control valve is opened, and the second liquid outlet end of the control valve is closed, so that the coolant flows to the hydraulic retarder radiator and the vehicle radiator in sequence.

4. The control method of the engine cooling system according to claim 1, characterized in that: After the first liquid outlet of the control valve is opened and the second liquid outlet of the control valve is closed according to the water temperature of the engine being greater than or equal to the first water temperature preset value, the method further includes: According to the hydraulic retarder radiator being in an operating state, a closing signal of the hydraulic retarder radiator is obtained; According to the closing signal of the hydraulic retarder radiator, the first liquid outlet end of the control valve is closed after a preset time delay, and the second liquid outlet end of the control valve is opened after a preset time delay, so that the coolant flows to the thermostat.

5. A storage medium, characterized in that: The storage medium stores computer program instructions, which, when executed by a processor, implement the control method for the engine cooling system according to any one of claims 1 to 4.

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