A dynamic control system and method for thermal management of a construction machine

Abstract

The application discloses an engineering machinery thermal management dynamic regulation system and method, gaps between the outside of a radiator and the inside of a cabin cover are distributed with first, second, third and fourth hot air back-suction channels, and cold air channels are arranged between adjacent cores in the radiator; the first, second, third and fourth hot air back-suction channels and the cold air channels are respectively provided with first, second, third, fourth and fifth electric control valves for controlling the flow area of the corresponding channels; a controller comprehensively judges according to the water radiator inlet temperature, the water radiator outlet temperature, the cabin temperature and the current ambient temperature, controls the opening degrees of the first, second, third, fourth and fifth electric control valves, and makes the engine coolant working temperature be located in the optimal working temperature interval.

Description

Technical Field

[0001] This application belongs to the field of thermal management technology for construction machinery, and relates to a dynamic control system and method for thermal management of construction machinery, specifically a dynamic control system and method for thermal management of construction machinery for cold working conditions. Background Technology

[0002] When construction machinery is first started up, the engine coolant is at a low temperature. In extremely cold environments, the cold air temperature is very low, and the heat dissipation efficiency is too high, making it difficult for the engine coolant temperature to rise to the optimal operating temperature range (usually 85-95 ℃). This means that the engine is operating at a low temperature for a long time, resulting in poor diesel atomization, low combustion efficiency, and high fuel consumption.

[0003] In related technologies, construction machinery uses a suction-type cooling system. Cold air first passes through the radiator core, and after being heated, it is exhausted outside the engine compartment. To prevent hot air backflow, the outer frame of the radiator is usually tightly sealed, as are the gaps between the cores inside the radiator. In extremely cold conditions, the conventional approach is to install insulation devices, such as adding a shield on the cold air intake side of the radiator to reduce the amount of cold air entering and prevent excessive heat dissipation. However, this method increases airflow resistance in the engine compartment, changes the fan's operating point, and causes the fan to operate in an inefficient range, increasing fuel consumption. Furthermore, the mechanical shielding area cannot be automatically adjusted in real time according to the coolant temperature. Another method involves adding a fan with an electromagnetic silicone oil clutch. This reduces the fan speed when the coolant temperature is low. The engagement and disengagement of the clutch rely on the energization of the electromagnetic coil to attract the valve plate, changing the silicone oil return channel. This cannot achieve instantaneous response, and most electromagnetic silicone oil fans operate in stages (e.g., high speed, low speed, disconnected), making stepless adjustment impossible. Summary of the Invention

[0004] Objective: In view of at least one of the above-mentioned technical problems, this application provides a dynamic control system and method for thermal management of engineering machinery. The system utilizes a flow guide device to draw hot air from the engine compartment back to the radiator intake side, thereby increasing the intake air temperature and reducing heat dissipation efficiency. Simultaneously, an electrically controlled valve is added to the flow guide device. By comprehensively collecting data on the ambient temperature, coolant temperature, and radiator intake air temperature, the flow area of ​​the electrically controlled valve is determined, thereby controlling the amount of hot air drawn back from the engine compartment to the radiator intake side, thus maintaining the engine coolant temperature within the optimal operating temperature range.

[0005] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows:

[0006] In one aspect, a dynamic control system for thermal management of engineering machinery is provided, including a controller and a first electrically controlled valve, a second electrically controlled valve, a third electrically controlled valve, a fourth electrically controlled valve, and a fifth electrically controlled valve;

[0007] The gaps between the exterior of the radiator and the interior of the engine compartment cover on the top, bottom, left, and right sides are respectively provided by the first hot air return channel, the second hot air return channel, the third hot air return channel, and the fourth hot air return channel. A cold air channel is provided between adjacent cores inside the radiator. The first hot air return channel, the second hot air return channel, the third hot air return channel, the fourth hot air return channel, and the cold air channel are respectively provided with a first electrically controlled valve, a second electrically controlled valve, a third electrically controlled valve, a fourth electrically controlled valve, and a fifth electrically controlled valve for controlling the flow area of ​​the corresponding channel. The controller is connected to the first electrically controlled valve, the second electrically controlled valve, the third electrically controlled valve, the fourth electrically controlled valve, and the fifth electrically controlled valve for signal connection.

[0008] In some embodiments, the system further includes:

[0009] An ambient temperature sensor is used to detect the ambient temperature and upload the data to the controller.

[0010] Cabin temperature sensor, used to detect cabin temperature and upload it to the controller;

[0011] The water radiator inlet temperature sensor is used to detect the water radiator inlet temperature and upload it to the controller.

[0012] The water radiator outlet temperature sensor is used to detect the water radiator outlet temperature and upload it to the controller.

[0013] Secondly, a dynamic control method for thermal management of construction machinery is provided, based on the aforementioned dynamic control system for thermal management of construction machinery, the method comprising:

[0014] Get the current ambient temperature;

[0015] In response to the current ambient temperature, acquire the water radiator inlet temperature, water radiator outlet temperature, and engine compartment temperature;

[0016] If the radiator outlet temperature exceeds the engine thermostat's minimum opening temperature, a command is issued to fully open the fifth electronically controlled valve, allowing cold air to be directly diverted from the cold air duct to the outside of the engine compartment; and based on the radiator inlet temperature... Water radiator outlet temperature Calculate the temperature difference between the inlet and outlet of the water radiator According to cabin temperature and current ambient temperature Temperature difference between computer cabin and environment ;

[0017] If within the set period duration, and And the temperature difference between the inlet and outlet of the water radiator The change amplitude is within the first amplitude threshold range, and the temperature difference between the cabin and the environment... If the change amplitude is within the second amplitude threshold range, it indicates that the engine coolant temperature is in equilibrium, and the water radiator outlet temperature is determined. Is it within the optimal operating temperature range? , [Inside; among them,] Indicates the first temperature difference threshold; This indicates the second temperature difference threshold; , These are the lower and upper limits of the optimal operating temperature range, respectively.

[0018] like < The command is issued to gradually increase the opening degree of the first and second electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves; if both the first and second electrically controlled valves are already at their maximum opening degree, and < The command is issued to gradually increase the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves.

[0019] In some embodiments, after determining whether the outlet temperature of the water radiator is within the optimal operating temperature range, the method further includes:

[0020] like > The command is issued to gradually reduce the opening of the fifth electrically controlled valve until... ≤ ≤ Maintain the current opening of the fifth electrically controlled valve; if the fifth electrically controlled valve is fully closed and > The command is issued to gradually reduce the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves; if the fifth, third, and fourth electrically controlled valves are all fully closed and > The command is issued to gradually reduce the opening degree of the first and second electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves.

[0021] Furthermore, if the fifth, third, fourth, first, and second electrically controlled valves are all completely closed and > This indicates a malfunction in the cooling system, prompting a shutdown for inspection and repair.

[0022] In some embodiments, the cycle duration is set to 10-30 minutes.

[0023] In some embodiments, the first temperature difference threshold The second temperature difference threshold is 7~10℃. The temperature range is 20~50℃; the first amplitude threshold range is [-2℃, 2℃].

[0024] In some embodiments, the lower limit and upper limit of the optimal operating temperature range are 85°C and 95°C, respectively.

[0025] Thirdly, a dynamic control system for thermal management of engineering machinery is provided, wherein the controller includes a processor and a storage medium;

[0026] The storage medium is used to store instructions;

[0027] The processor is configured to operate according to the instructions to execute the method.

[0028] Fourthly, an engineering machinery is provided, which is equipped with the aforementioned engineering machinery thermal management dynamic control system.

[0029] Compared with the prior art, the beneficial effects achieved by this application are as follows: This application provides a dynamic control system and method for thermal management of engineering machinery. It utilizes a flow guide device to draw hot air from the engine compartment back to the radiator's intake side, thereby increasing the intake air temperature and reducing heat dissipation efficiency. Simultaneously, electrically controlled valves are added to the flow guide device (first hot air intake channel, second hot air intake channel, third hot air intake channel, fourth hot air intake channel, and cold air channel). The controller comprehensively judges the water radiator inlet temperature, water radiator outlet temperature, engine compartment temperature, and current ambient temperature, and controls the opening degree of the first, second, third, fourth, and fifth electrically controlled valves, thereby controlling the amount of hot air drawn back from the engine compartment to the radiator's intake side, thus maintaining the engine coolant temperature within the optimal operating temperature range. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram showing the closure of the first hot air return channel and the second hot air return channel in the dynamic control system for thermal management of engineering machinery according to an embodiment of this application.

[0032] Figure 2 This is a schematic diagram showing the opening of the first hot air return suction channel and the second hot air return suction channel in the dynamic control system for thermal management of engineering machinery according to an embodiment of this application.

[0033] Figure 3 This is a schematic diagram of the gap channel between the outside of the radiator and the inside of the engine compartment cover, and the gap channel between the inner core of the radiator in the dynamic control system for thermal management of engineering machinery according to an embodiment of this application.

[0034] Figure 4 This is a schematic diagram of the dynamic control method for thermal management of engineering machinery according to an embodiment of this application;

[0035] The reference numerals in the attached drawings are explained as follows: First hot air return channel 1, Second hot air return channel 2, Third hot air return channel 3, Fourth hot air return channel 4, First electrically controlled valve S1, Second electrically controlled valve S2, Third electrically controlled valve S3, Fourth electrically controlled valve S4, Fifth electrically controlled valve S5; Radiator 6, Core 61, Engine compartment 7, Engine compartment cover 71, Fan 8, Engine 9. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0037] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The relevant technical terms are explained below:

[0041] Coolant: The engine generates heat during operation. Antifreeze carries away the heat by flowing through the engine's water jacket.

[0042] Thermostat: The thermostat is installed in the cooling water circulation path (usually at the outlet of the cylinder head). It automatically changes the water circulation path (switching between small and large circulation) according to the temperature of the engine antifreeze, so as to regulate the cooling intensity of the cooling system.

[0043] Radiator coolant: An important component of the radiator, it cools the engine coolant through the engine's main circulation loop.

[0044] Small circulation: The coolant in the engine water jacket flows back to the cylinder block water jacket through the water pump, forming a small circulation, which is the cooling circulation that takes place inside the engine.

[0045] Large circulation: When the thermostat opens, the engine coolant flows through the thermostat to the radiator, and then returns from the radiator to the engine water jacket for large circulation.

[0046] Vehicle controller: It has a preset control strategy and controls the electronically controlled valves (actuators) according to the input parameters of each sensor; at the same time, it collects the coolant temperature change and continuously corrects the opening degree of the electronically controlled valves (corresponding channel flow area) to achieve closed-loop control.

[0047] This application provides a dynamic control system and method for thermal management of engineering machinery. It utilizes a flow guide device to draw hot air from the engine compartment back to the radiator's intake side, thereby increasing the intake air temperature and reducing heat dissipation efficiency. Simultaneously, an electrically controlled valve is added to the flow guide device. By comprehensively collecting data on the ambient temperature, coolant temperature, and radiator intake air temperature, the flow area of ​​the electrically controlled valve is determined, thereby controlling the amount of hot air drawn back from the engine compartment to the radiator's intake side, thus maintaining the engine coolant temperature within the optimal operating temperature range.

[0048] Example 1: This application provides a dynamic control system for thermal management of construction machinery, including a controller. The controller includes a processor and a storage medium. The storage medium is used to store instructions. The processor is used to perform operations according to the instructions to execute the following dynamic control method for thermal management of construction machinery.

[0049] like Figure 1 , Figure 2 , Figure 3 As shown, the dynamic control system for thermal management of engineering machinery also includes a first electrically controlled valve S1, a second electrically controlled valve S2, a third electrically controlled valve S3, a fourth electrically controlled valve S4, and a fifth electrically controlled valve S5.

[0050] The gaps between the exterior of the radiator 6 and the interior of the hood 71 are respectively distributed by the first hot air return channel 1, the second hot air return channel 2, the third hot air return channel 3, and the fourth hot air return channel 4. A cold air channel 5 is provided between adjacent cores 61 inside the radiator 6. The first hot air return channel 1, the second hot air return channel 2, the third hot air return channel 3, the fourth hot air return channel 4, and the cold air channel 5 are respectively provided with a first electrically controlled valve S1, a second electrically controlled valve S2, a third electrically controlled valve S3, a fourth electrically controlled valve S4, and a fifth electrically controlled valve S5 for controlling the flow area of ​​the corresponding channel. The controller (not shown in the figure) is connected to the first electrically controlled valve, the second electrically controlled valve, the third electrically controlled valve, the fourth electrically controlled valve, and the fifth electrically controlled valve.

[0051] In some embodiments, the system further includes:

[0052] An ambient temperature sensor is used to detect the ambient temperature and upload the data to the controller.

[0053] The cabin temperature sensor is used to detect the cabin temperature and upload the data to the controller.

[0054] The water radiator inlet temperature sensor is used to detect the water radiator inlet temperature and upload it to the controller.

[0055] The water radiator outlet temperature sensor is used to detect the water radiator outlet temperature and upload it to the controller.

[0056] It should be noted that the first, second, third, fourth, and fifth electrically controlled valves are normally closed by default.

[0057] Example 2: Figure 4 As shown, this application also provides a dynamic control method for thermal management of construction machinery, based on the dynamic control system for thermal management of construction machinery described in Embodiment 1, the method comprising:

[0058] S1. Obtain the current ambient temperature ;

[0059] S2, responding to the current ambient temperature <Cold operating temperature threshold> This indicates that the entire machine is in a cold operating condition; obtain the inlet temperature of the water radiator. Water radiator outlet temperature cabin temperature ;

[0060] S3, outlet temperature of the water radiator >Minimum opening temperature of engine thermostat (This indicates that the engine cooling system has entered the large circulation phase), and a command is issued to fully open the fifth electronically controlled valve, allowing cold air to flow directly from the cold air duct 5 to the outside of the engine compartment; and based on the water radiator inlet temperature... Water radiator outlet temperature Calculate the temperature difference between the inlet and outlet of the water radiator According to cabin temperature and current ambient temperature Temperature difference between computer cabin and environment ; , ;

[0061] S4. If within the set period duration (e.g., 8 minutes), and And the temperature difference between the inlet and outlet of the water radiator The change amplitude is within the first amplitude threshold range and the temperature difference between the cabin and the environment If the change amplitude is within the second amplitude threshold range, it indicates that the engine coolant temperature is in equilibrium (due to continuous operation of the entire machine), and the water radiator outlet temperature is determined. Is it within the optimal operating temperature range? , [Inside; among them,] Indicates the first temperature difference threshold; This indicates the second temperature difference threshold; , These are the lower and upper limits of the optimal operating temperature range, respectively.

[0062] like < (This indicates that the current heat dissipation efficiency is too high, and the engine coolant operating temperature needs to be increased.) A command is issued to gradually increase the opening of the first and second electronically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves; if both the first and second electrically controlled valves are already at their maximum opening degree, and < (e.g., 85℃), a command is issued to gradually increase the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves;

[0063] like > (This indicates that the current heat dissipation efficiency is low, and the engine coolant operating temperature needs to be reduced.) A command is issued to gradually decrease the opening of the fifth electronically controlled valve until... ≤ ≤ Maintain the current opening of the fifth electrically controlled valve; if the fifth electrically controlled valve is fully closed and > (e.g., 95℃), a command is issued to gradually reduce the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves; if the fifth, third, and fourth electrically controlled valves are all fully closed and > The command is issued to gradually reduce the opening degree of the first and second electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves;

[0064] If the fifth, third, fourth, first, and second electrically controlled valves are all fully closed and > This indicates a malfunction in the cooling system, prompting a shutdown for inspection and repair.

[0065] In some embodiments, the set cycle duration can be any value between 10 and 30 minutes, such as 10, 11, 12, 15, 20, 25, or 30 minutes.

[0066] In some embodiments, the first temperature difference threshold It can be any value between 7 and 10℃, such as 7, 8, 9, or 10℃; the second temperature difference threshold. It can be any value between 20 and 50℃, such as 20, 30, 40, and 50℃; the first amplitude threshold range can be ±2℃.

[0067] In some embodiments, within the optimal operating temperature range , The temperatures are 85℃ and 95℃, respectively.

[0068] Example 3: Based on Examples 1 and 2, this application provides a dynamic control system for thermal management of engineering machinery, wherein the controller includes a processor and a storage medium;

[0069] The storage medium is used to store instructions;

[0070] The processor is configured to operate according to the instructions to execute the method.

[0071] Example 4: This application provides an engineering machinery equipped with the aforementioned engineering machinery thermal management dynamic control system.

[0072] In some embodiments, the construction machinery may be an excavator.

[0073] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0074] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0075] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0076] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0077] The above description is only a preferred embodiment of this application. It should be noted that those skilled in the art should understand that various changes and improvements may be made to this application without departing from the principles and spirit. These improvements should also be considered within the scope of protection of this application and are not limited to the above embodiments.

Claims

1. A dynamic control method for thermal management of engineering machinery, characterized in that, Based on the dynamic control system for thermal management of engineering machinery, the system includes a controller and a first electrically controlled valve, a second electrically controlled valve, a third electrically controlled valve, a fourth electrically controlled valve, and a fifth electrically controlled valve. The gaps between the exterior of the radiator and the interior of the engine compartment are respectively distributed with a first hot air return channel, a second hot air return channel, a third hot air return channel, and a fourth hot air return channel. A cold air channel is provided between adjacent cores inside the radiator. The first hot air return channel, the second hot air return channel, the third hot air return channel, the fourth hot air return channel, and the cold air channel are each equipped with a first electrically controlled valve, a second electrically controlled valve, a third electrically controlled valve, a fourth electrically controlled valve, and a fifth electrically controlled valve, respectively, for controlling the flow area of ​​the corresponding channel. The controller is signal-connected to the first electrically controlled valve, the second electrically controlled valve, the third electrically controlled valve, the fourth electrically controlled valve, and the fifth electrically controlled valve, respectively. The method includes: Get the current ambient temperature; In response to the current ambient temperature being less than the cold operating temperature threshold, the water radiator inlet temperature, water radiator outlet temperature, and engine compartment temperature are obtained. If the radiator outlet temperature exceeds the engine thermostat's minimum opening temperature, a command is issued to fully open the fifth electronically controlled valve, allowing cold air to be directly diverted from the cold air duct to the outside of the engine compartment; and based on the radiator inlet temperature... Water radiator outlet temperature Calculate the temperature difference between the inlet and outlet of the water radiator According to cabin temperature and current ambient temperature Temperature difference between computer cabin and environment ; If within the set period duration, and And the temperature difference between the inlet and outlet of the water radiator The change amplitude is within the first amplitude threshold range, and the temperature difference between the cabin and the environment... If the change amplitude is within the second amplitude threshold range, it indicates that the engine coolant temperature is in equilibrium, and the water radiator outlet temperature is determined. Is it within the optimal operating temperature range? , [Inside; among them,] Indicates the first temperature difference threshold; This indicates the second temperature difference threshold; , These are the lower and upper limits of the optimal operating temperature range, respectively. like < The command is issued to gradually increase the opening degree of the first and second electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves; if both the first and second electrically controlled valves are already at their maximum opening degree, and < The command is issued to gradually increase the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves.

2. The dynamic control method for thermal management of engineering machinery according to claim 1, characterized in that, After determining whether the outlet temperature of the water radiator is within the optimal operating temperature range, the following steps are also included: like > The command is issued to gradually reduce the opening of the fifth electrically controlled valve until... ≤ ≤ Maintain the current opening of the fifth electrically controlled valve; if the fifth electrically controlled valve is fully closed and > The command is issued to gradually reduce the opening degree of the third and fourth electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the third and fourth electrically controlled valves; if the fifth, third, and fourth electrically controlled valves are all fully closed and > The command is issued to gradually reduce the opening degree of the first and second electrically controlled valves until... ≤ ≤ And maintain the current opening degree of the first and second electrically controlled valves.

3. The dynamic control method for thermal management of engineering machinery according to claim 2, characterized in that, Also includes: If the fifth, third, fourth, first, and second electrically controlled valves are all fully closed and > This indicates a malfunction in the cooling system, prompting a shutdown for inspection and repair.

4. The dynamic control method for thermal management of engineering machinery according to claim 1, characterized in that, Set the cycle duration to 10~30 minutes.

5. The dynamic control method for thermal management of engineering machinery according to claim 1, characterized in that, First temperature difference threshold The second temperature difference threshold is 7~10℃. The temperature range is 20~50℃; the first amplitude threshold range is [-2℃, 2℃].

6. The dynamic control method for thermal management of engineering machinery according to claim 1, characterized in that, The lower and upper limits of the optimal operating temperature range are 85℃ and 95℃, respectively.

7. A dynamic control system for thermal management of engineering machinery, characterized in that, Includes a controller, which includes a processor and a storage medium; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the method according to any one of claims 1-6.

8. The dynamic control system for thermal management of engineering machinery according to claim 7, characterized in that, Also includes: An ambient temperature sensor is used to detect the ambient temperature and upload the data to the controller. Cabin temperature sensor, used to detect cabin temperature and upload it to the controller; The water radiator inlet temperature sensor is used to detect the water radiator inlet temperature and upload it to the controller. The water radiator outlet temperature sensor is used to detect the water radiator outlet temperature and upload it to the controller.

9. An engineering machinery, characterized in that, The equipment is equipped with the dynamic control system for thermal management of engineering machinery as described in any one of claims 7 to 8.

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