Engineering vehicle dynamic regulation thermal management system and method

Abstract

The invention relates to an engineering vehicle dynamic regulation thermal management system and method, and the system comprises an engineering vehicle thermal management core parameter sensor, a sensor data receiving unit, a control unit, a water pump, an annular injection device and other core components. Judging by combining a preset threshold value, and dynamically adjusting the water pump output flow and the fan rotating speed. Flow distribution is optimized in real time according to the temperature drop rate, and water mist cooling and radiator self-cleaning are synchronously achieved; the pipeline state is monitored through the pressure sensor in the whole process, faults are accurately early warned, and key data are stored for traceability analysis. All-working-condition accurate adaptation is achieved, energy saving, water saving and heat dissipation efficiency are both considered, the operation and maintenance cost and the shutdown risk are reduced, and the method is suitable for various engineering vehicle complex operation scenes.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery technology, specifically relating to a dynamic adjustment thermal management system and method for engineering vehicles, which is applied to thermal management scenarios of engineering vehicles under conditions such as high-temperature outdoor construction, heavy-load continuous operation, dust and bumps. Background Technology

[0002] In existing technologies, thermal management of engineering vehicles typically involves collecting engine coolant or hydraulic oil temperatures and setting fixed thresholds to trigger the start and stop of the coolant pump and fan, thereby dissipating heat and meeting the basic requirement of stable temperature in the power system of engineering vehicles. However, existing thermal management methods have some significant shortcomings in terms of adaptability to complex operating conditions, dynamic control accuracy of cooling intensity, and system fault early warning capabilities.

[0003] In practical applications, engineering vehicles commonly face complex operating conditions such as high temperatures, continuous heavy-load operation, and dusty, bumpy conditions. Thermal management systems must handle the dynamic thermal loads on the engine and hydraulic systems caused by load fluctuations and environmental changes. Existing technologies often rely solely on setting fixed thresholds for temperature as a single parameter, neglecting key influencing factors such as vehicle load rate and ambient temperature. Furthermore, the cooling water pump always outputs a constant flow, achieving only coarse control through start-stop cycles. Simultaneously, existing systems lack feedback mechanisms to regulate the rate of temperature drop and do not include pipeline pressure monitoring. Due to these factors, practical applications are prone to problems such as a mismatch between cooling trigger timing and actual heat load requirements, and an inability to dynamically adjust cooling intensity according to operating conditions. This can lead to wasted cooling water and energy, or even insufficient or excessive cooling. In addition, there is a risk of failing to detect system malfunctions such as filter blockage, nozzle failure, and water pump abnormalities in a timely manner, thereby affecting the reliability of engineering vehicle operations and increasing maintenance costs and downtime risks.

[0004] It is evident that existing technologies often suffer from problems such as poor adaptability to thermal management conditions of engineering vehicles, lack of graded dynamic adjustment capabilities, lack of feedback optimization during the cooling process, and absence of fault monitoring capabilities. These are the shortcomings of existing technologies.

[0005] In view of this, it is very necessary for the present invention to provide a dynamic adjustment thermal management system and method for engineering vehicles to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the existing technology, such as poor adaptability to operating conditions, lack of graded dynamic adjustment capability, lack of feedback optimization during cooling process, and lack of fault monitoring capability, by providing a dynamic adjustment thermal management system and method for engineering vehicles to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a dynamic adjustment thermal management system for engineering vehicles, including a sensor data receiving unit, a core parameter sensor for thermal management of engineering vehicles, a control unit, a water tank, a switch, a filter pressure sensor, a water pump pressure sensor, a filter, a water pump, an annular injection device, a hydraulic oil tank, a radiator, and a fan. The core parameter sensor for thermal management of engineering vehicles is electrically connected to the sensor data receiving unit. The core parameter sensor for thermal management of engineering vehicles collects the core parameters for thermal management of engineering vehicles in real time and transmits them to the sensor data receiving unit. The sensor data receiving unit is electrically connected to the control unit, transmitting the core parameters of the engineering vehicle's thermal management to the control unit. The control unit is electrically connected to the water pump and fan. The control unit generates control commands based on the received core parameters of the thermal management of the engineering vehicle. When the core parameters of the thermal management of the engineering vehicle meet the preset threshold, the control unit controls the water pump and fan to start and dynamically adjusts the output flow of the water pump and the fan speed. The water pump inlet is connected to the filter outlet via a pipeline, the filter inlet is connected to the first terminal of the switch via a pipeline, and the second terminal of the switch is connected to the water tank outlet via a pipeline; a filter pressure sensor is installed on the pipeline between the filter and the switch to monitor the pressure status at the front end of the filter. The outlet of the water pump is connected to the inlet of the annular jet device via a pipeline; a water pump pressure sensor is installed on the pipeline between the water pump and the annular jet device to monitor the pressure status at the front end of the annular jet device. Both the filter pressure sensor and the water pump pressure sensor are electrically connected to the sensor data receiving unit; The annular spray device is located on the windward side of the radiator, and is surrounded by several fan-shaped atomizing nozzles facing the radiator core; a fan is installed between the annular spray device and the radiator, and the fan is coaxial with the annular spray device.

[0008] Furthermore, the core parameter sensors for thermal management of the engineering vehicle include an engine coolant temperature sensor, a hydraulic oil temperature sensor, an ambient temperature sensor, and an engine load rate sensor; used to collect the core parameters for thermal management of the engineering vehicle in real time; the core parameters for thermal management of the engineering vehicle include engine coolant temperature, hydraulic oil temperature, ambient temperature, and engine load rate; Among them, the engine coolant temperature sensor is used to collect the engine coolant temperature, the hydraulic oil temperature sensor is used to collect the hydraulic oil temperature, the ambient temperature sensor is used to collect the ambient temperature, and the engine load rate sensor is used to collect the engine load rate.

[0009] Furthermore, the sensor data receiving unit is used to receive the core parameters of thermal management of the engineering vehicle collected by the core parameter sensor of thermal management of the engineering vehicle, as well as the pressure signals of the filter pressure sensor and the water pump pressure sensor. Furthermore, the control unit receives the core parameters of the engineering vehicle's thermal management from the sensor data receiving unit and compares them with preset thresholds; it generates control commands based on the threshold judgment results to dynamically adjust the water pump's output flow rate and fan speed; it also receives pressure signals from the filter pressure sensor and water pump pressure sensor from the sensor data receiving unit, triggering a visual alarm on the overall machine control instrument to prompt maintenance personnel to troubleshoot the fault; it can dynamically adjust the cooling water flow rate in the water pump pipeline according to the rate of decrease of the engine coolant temperature or the rate of decrease of the hydraulic oil temperature; it also has data storage and export functions, which can record and store high-temperature temperatures and injection durations, and the stored information can be exported to assist in analyzing the radiator temperature change process, thereby analyzing the cause of high temperature.

[0010] The water tank is used to store water. It can be the vehicle's own water tank, such as that of a milling machine or road roller, or a dedicated water tank can be installed. The switch is used to control the flow of water in the pipeline, so that the water in the tank does not need to be released when cleaning or maintaining the pipeline. The switch is in the on state by default when the system is started, and can be manually turned off when cleaning or maintaining the pipeline.

[0011] The hydraulic oil tank serves as a storage container for hydraulic oil; a hydraulic oil temperature sensor is installed on the hydraulic oil tank to collect the hydraulic oil temperature.

[0012] The filter pressure sensor monitors the pipeline pressure between the switch and the filter. When the pressure is higher than the preset maximum pressure value, it indicates that the filter is blocked; when the pressure is lower than the preset minimum pressure value, it indicates that there is a fault in the pipeline between the filter and the water tank. The filter pressure sensor transmits the pressure signal to the sensor data receiving unit, which in turn transmits the pressure signal to the control unit. The control unit then displays the alarm signal on the instrument panel of the whole machine.

[0013] The water pump pressure sensor monitors the pipeline pressure between the water pump and the annular jet device. When the pressure is higher than the preset maximum pressure value, it indicates that the annular jet device is blocked. When the pressure is lower than the preset minimum pressure value, it indicates that the water pump is faulty. The water pump pressure sensor transmits the pressure signal to the sensor data receiving unit, which in turn transmits the pressure signal to the control unit. The control unit then displays the alarm signal on the control instrument panel of the whole machine.

[0014] The filter is used to filter impurities in the cooling water to prevent clogging of pipes and nozzles; The water pump provides power to the cooling water and responds to the commands of the control unit to achieve dynamic graded regulation of the flow rate and secondary regulation based on the rate of temperature drop. The annular spray device comprises two parts: a nozzle and an annular water channel. The annular water channel has a ring-shaped structure and is installed co-centered with the fan, with several fan-shaped atomizing nozzles arranged around it facing the radiator core. It atomizes the cooling water into fine water mist, increasing the contact area between the cooling water and the radiator core. The co-centered installation layout ensures that the water mist is evenly covered on the windward side of the radiator under the guidance of the fan airflow, avoiding uneven heat dissipation in certain areas. At the same time, when the high-pressure, high-speed airflow carries the water mist through the radiator core channel, it can clean the dust, catkins, and other debris accumulated in the channel, clearing the heat dissipation channel and ensuring the efficiency of airflow heat exchange.

[0015] The radiator is used to transfer heat from the engine coolant and hydraulic oil to the external environment; its core channel provides contact area for heat exchange between the engine coolant, hydraulic oil and the external environment; combined with the water mist cooling of the annular spray device, it can greatly improve the heat conduction efficiency and avoid performance degradation or failure of the engine and hydraulic system due to high temperature.

[0016] The fan is coaxially mounted with the annular spray device and positioned between the annular spray device and the radiator. During operation, it generates a directional airflow, which drives the water mist generated by the annular spray device to flow evenly through the radiator core channel, accelerating water mist evaporation and heat dissipation. The co-central layout with the annular spray device maximizes the synergistic effect of airflow and water mist, improving heat dissipation efficiency while preventing water mist from spreading to non-heat dissipation areas. Furthermore, the fan receives speed adjustment commands from the control unit and can dynamically adjust its speed according to operating conditions, reducing power consumption and operating noise.

[0017] The specific workflow of the system is as follows: The core parameter sensors for thermal management of engineering vehicles collect engine coolant temperature, hydraulic oil temperature, ambient temperature, and engine load rate in real time and transmit them to the sensor data receiving unit. The sensor data receiving unit transmits the core parameters of the thermal management of the engineering vehicle to the control unit; the control unit compares the received core parameters of the thermal management of the engineering vehicle with the built-in preset thresholds to determine whether the preset thresholds are met. If the preset threshold is met, the control unit generates a control command and sends it to the water pump. The water pump starts and outputs cooling water at the corresponding flow rate, and the fan adjusts to the appropriate speed. The cooling water passes through the switch, filter pressure sensor, filter, water pump, and water pump pressure sensor in sequence, and is delivered to the annular spray device. After being atomized by the fan-shaped atomizing nozzle, it covers and flows through the radiator core channel under the airflow of the fan. On the one hand, it cools down by absorbing heat through water mist evaporation, and on the other hand, it cleans the debris in the core channel. When water mist is sprayed onto the radiator core by the fan airflow, it can clean the dust, catkins and other debris accumulated in the core channels and unclog the heat dissipation channels. During the process, the control unit monitors the rate of decrease of engine coolant temperature or hydraulic oil temperature in real time and dynamically adjusts the water pump flow rate; at the same time, it records and stores the high temperature and injection duration; the filter pressure sensor and water pump pressure sensor monitor the pipeline pressure in real time, and if an abnormality occurs, an alarm is triggered to prompt maintenance personnel to troubleshoot the fault in time.

[0018] Furthermore, the preset threshold includes a preset coolant alarm temperature. Preset hydraulic oil alarm temperature First load rate threshold, second load rate threshold, first ambient temperature threshold, and second ambient temperature threshold; When the engine coolant temperature reaches At this time, the control unit controls the water pump to start, and the cooling water is sprayed through the annular spray device and the fan-shaped atomizing nozzle to cool the radiator until the engine coolant temperature drops to a certain level. The injection duration for this process is t1. When the hydraulic oil temperature reaches At this time, the control unit controls the water pump to start, and the cooling water is sprayed through the annular spray device and the fan-shaped atomizing nozzle to cool the radiator until the hydraulic oil temperature drops to a certain level. The injection duration of this process is t1.

[0019] When the engine load rate exceeds the first load rate threshold and the ambient temperature exceeds the first ambient temperature threshold, the control unit controls the water pump to output the first flow rate and adjusts the fan to a suitable low speed. When the engine load rate exceeds the second load rate threshold and the ambient temperature exceeds the second ambient temperature threshold, the control unit controls the water pump to output the second flow rate and adjusts the fan to a suitable high speed. The second load rate threshold is greater than the first load rate threshold, the second ambient temperature threshold is greater than the first ambient temperature threshold, and the second flow rate is greater than the first flow rate.

[0020] Secondly, this invention also provides a dynamic thermal management method for engineering vehicles, based on the aforementioned dynamic thermal management system for engineering vehicles. By collecting core thermal management parameters of the engineering vehicle and comparing them with preset thresholds, the method dynamically adjusts the water pump output flow rate and fan speed, simultaneously achieving water mist cooling and radiator self-cleaning. It optimizes flow distribution based on the temperature drop rate and provides fault warnings through pressure monitoring. Key data is also recorded for subsequent analysis. The specific steps are as follows: Step S1: Collect the core parameters of thermal management of the engineering vehicle in real time through the core parameter sensor of thermal management of the engineering vehicle, and transmit the collected parameter signals to the sensor data receiving unit; the sensor data receiving unit transmits the core parameters of thermal management of the engineering vehicle to the control unit. The core parameters for thermal management of engineering vehicles include engine coolant temperature. Hydraulic oil temperature Operating environment temperature Engine load rate ; The data acquisition frequency is dynamically adapted to the operating conditions of the engineering vehicles to ensure the real-time and accuracy of parameter transmission, providing data support for subsequent threshold determination.

[0021] Step S2: The control unit receives the core parameters of thermal management of the engineering vehicle collected in step S1, compares and analyzes them with the built-in preset thresholds, and determines whether the triggering conditions are met. The triggering conditions include emergency cooling triggering conditions, primary heat dissipation triggering conditions, and secondary heat dissipation triggering conditions; The comparison and analysis with the built-in preset thresholds includes high temperature alarm threshold judgment and operating condition classification threshold judgment. The specific judgment logic is as follows: The high temperature alarm threshold is determined by setting a preset coolant alarm temperature. Preset hydraulic oil alarm temperature ; like ≥ or ≥ The emergency cooling trigger condition is met. The operating condition classification threshold determination includes a preset first load rate threshold. Second load rate threshold First ambient temperature threshold Second ambient temperature threshold ,and > , > ; like > and > The first-level heat dissipation trigger condition is met. like > and > The conditions for triggering secondary heat dissipation are met. in, This refers to the engine coolant temperature. Hydraulic oil temperature The ambient temperature of the work environment. For engine load rate, For the first load rate threshold, For the second load rate threshold, The first ambient temperature threshold, This is the second ambient temperature threshold.

[0022] If none of the above triggering conditions are met, the control unit determines that active cooling does not need to be activated, and the core parameter sensors for thermal management of the engineering vehicle continue to collect parameters and monitor the status.

[0023] Step S3: Based on the judgment result of step S2, the control unit generates corresponding control commands to synchronously control the water pump and fan to perform linked actions. If the emergency cooling trigger condition is met, control the water pump to start and output a cooling flow rate adapted to the emergency cooling, while controlling the fan to adjust to a high speed to ensure water mist evaporation efficiency and heat dissipation effect. If the first-level heat dissipation trigger condition is met, control the water pump to start and output the first flow rate, while controlling the fan to adjust to an appropriate low speed to balance heat dissipation needs with energy saving and noise reduction. If the secondary heat dissipation trigger condition is met, the water pump is controlled to start and output a second flow rate, and the second flow rate is greater than the first flow rate. At the same time, the fan is controlled to adjust to a suitable high speed to match the strong heat dissipation requirements under high load and high temperature environment.

[0024] The water pump responds to the control command and outputs cooling water. The cooling water passes through the switch, filter pressure sensor, filter, water pump, and water pump pressure sensor in sequence, and is then delivered to the annular spray device. The fan-shaped atomizing nozzles of the annular spray device atomize the cooling water into a fine mist, which, driven by the fan airflow, evenly covers the windward side of the radiator and flows through the radiator core channels. Water mist evaporates and absorbs heat, quickly reducing the temperature of the radiator core, thereby dissipating the heat from the engine coolant and hydraulic oil. High-pressure, high-speed airflow carries water mist to flush the radiator core channels, cleaning away dust, catkins, and other debris accumulated in the channels, clearing the heat dissipation channels, ensuring airflow heat exchange efficiency, and completing self-cleaning.

[0025] During the cooling and self-cleaning process, the control unit monitors the rate of decrease in engine coolant temperature or hydraulic oil temperature in real time, and dynamically adjusts the water pump output flow rate according to the rate: If the rate of decrease of engine coolant temperature or hydraulic oil temperature is greater than the preset rate threshold, it indicates that the cooling efficiency is too high. The control unit controls the water pump to reduce the output flow to avoid wasting coolant. If the rate of decrease of engine coolant temperature or hydraulic oil temperature is less than the preset rate threshold, it indicates that the cooling efficiency is insufficient. The control unit controls the water pump to increase the output flow to ensure that the temperature drops quickly to a safe range. If the rate of decrease of coolant temperature or hydraulic oil temperature is greater than the preset rate threshold, the output flow rate is reduced; if the rate of decrease of coolant temperature or hydraulic oil temperature is less than the preset rate threshold, the output flow rate is increased. If the emergency cooling trigger condition is met, the flow rate will be continuously adjusted until the engine coolant temperature is less than the preset coolant alarm temperature and the hydraulic oil temperature is less than the preset hydraulic oil alarm temperature. The cumulative injection time of this process is the single injection time.

[0026] Furthermore, the control unit synchronously records and stores key data, including the threshold type for triggering cooling, high temperature peak (maximum engine coolant temperature / maximum hydraulic oil temperature), single injection duration, water pump flow rate adjustment curve, and temperature drop rate curve. The stored data can be exported by the control unit to assist in analyzing the radiator temperature change process, tracing the cause of high temperature, and providing a basis for subsequent operation and maintenance optimization.

[0027] Step S4: Throughout the cooling process, the filter pressure sensor and the water pump pressure sensor monitor the pressure status of the corresponding pipelines in real time and transmit the pressure signals to the control unit via the sensor data receiving unit. If the filter pressure sensor detects a pressure ≥ the preset maximum pressure value, the control unit determines that the filter is clogged and triggers a visual alarm on the whole machine control instrument; If the water pump pressure sensor detects that the pressure is greater than or equal to the preset maximum pressure value, the control unit determines that the fan-shaped atomizing nozzle is blocked and triggers a visual alarm on the whole machine control instrument. If the filter pressure sensor or water pump pressure sensor detects that the pressure is ≤ the preset minimum pressure value, the control unit determines that the water pump is malfunctioning or there is a pipeline leak, and triggers a visual alarm on the whole machine control instrument. The alarm signal simultaneously alerts maintenance personnel to promptly troubleshoot the fault and prevent engineering vehicle malfunctions caused by cooling system failure.

[0028] Step S5: When any of the following conditions are met, the control unit generates a stop command, controls the water pump to shut down, the fan to return to standby speed, and the system to reset to the parameter monitoring state: When the emergency cooling trigger condition is met, the engine coolant temperature is less than the preset coolant alarm temperature and the hydraulic oil temperature is less than the preset hydraulic oil alarm temperature, and the cumulative injection time reaches the single injection time. When the first-level or second-level heat dissipation trigger conditions are met, the engine load rate is ≤ the corresponding load rate threshold or the ambient temperature is ≤ the corresponding ambient temperature threshold, and the engine coolant temperature and hydraulic oil temperature are both stable within the safe operating range. After troubleshooting, the water pump pressure sensor and filter pressure sensor detected that the pipeline pressure had returned to the normal range, and the core parameters were normal.

[0029] The beneficial effects of this invention are as follows: By collecting engine coolant temperature, hydraulic oil temperature, ambient temperature, and engine load rate, and combining preset thresholds, the water pump flow rate and fan speed are dynamically matched to adapt to various operating conditions such as high load and high temperature, light load and low temperature, and sudden changes in scenarios, avoiding excessive cooling or insufficient heat dissipation and ensuring stable system operation; multi-level load rate and ambient temperature thresholds are designed to trigger different water pump flow rates and fan speeds accordingly, achieving a stepped adaptation of heat dissipation intensity, taking into account both the needs of strong heat dissipation under high load and low energy consumption under low load, and improving the flexibility of regulation; a temperature drop rate feedback mechanism is introduced to adjust the water pump flow rate in real time, reducing the flow rate to save water when the temperature drops too quickly, and increasing the flow rate to maintain efficiency when the temperature drops insufficiently, combined with dynamic fan speed adjustment, to achieve synergistic optimization of heat dissipation, energy saving, and water saving; through dual pressure sensors to monitor the pipeline status throughout the entire process, blockages, faults, and other problems are accurately located and alarms are triggered in real time, combined with key data storage and export functions, which helps in fault tracing and preventive maintenance, significantly reducing operation and maintenance costs and downtime risks.

[0030] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0031] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This embodiment provides a simplified schematic diagram illustrating the working principle of a dynamic adjustment thermal management system for engineering vehicles.

[0034] Among them, 1-water tank, 2-switch, 3-filter pressure sensor, 4-filter, 5-control unit, 6-water pump, 7-engine, 8-hydraulic oil tank, 9-annular injection device, 10-nozzle, 11-annular water circuit, 12-fan, 13-radiator, 14-sensor data receiving unit, 15-hydraulic oil temperature sensor, 16-engine coolant temperature sensor, 17-ambient temperature sensor, 18-engine load rate sensor, 19-water pump pressure sensor. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0036] Example 1: This embodiment provides a dynamic adjustment thermal management system for engineering vehicles, including a sensor data receiving unit 14, a control unit 5, a water tank 1, a switch 2, a filter pressure sensor 3, a water pump pressure sensor, a filter 4, a water pump 6, an annular injection device 9, a hydraulic oil tank 8, a radiator 13, and a fan 12. The core parameter sensor for thermal management of engineering vehicles is electrically connected to the sensor data receiving unit 14. The core parameter sensor for thermal management of engineering vehicles collects the core parameters for thermal management of engineering vehicles in real time and transmits them to the sensor data receiving unit 14. The sensor data receiving unit 14 is electrically connected to the control unit 5 and transmits the core parameters of the thermal management of the engineering vehicle to the control unit 5. The control unit 5 is electrically connected to the water pump 6 and the fan 12. Based on the received core parameters of the thermal management of the engineering vehicle, the control unit 5 generates control commands. When the core parameters of the thermal management of the engineering vehicle meet the preset threshold, the control unit 5 controls the water pump 6 and the fan 12 to start and dynamically adjusts the output flow of the water pump 6 and the speed of the fan 12. The inlet of the water pump 6 is connected to the outlet of the filter 4 through a pipeline. The inlet of the filter 4 is connected to the first end of the switch 2 through a pipeline. The second end of the switch 2 is connected to the outlet of the water tank 1 through a pipeline. A filter pressure sensor 3 is installed on the pipeline between the filter 4 and the switch 2 to monitor the pressure status at the front end of the filter 4. The outlet of the water pump 6 is connected to the inlet of the annular jet device 9 through a pipeline; a water pump pressure sensor is installed on the pipeline between the water pump 6 and the annular jet device 9 to monitor the pressure status at the front end of the nozzle 10. Both the filter pressure sensor 3 and the water pump pressure sensor are electrically connected to the sensor data receiving unit 14. The annular spray device 9 is located on the windward side of the radiator 13, and a number of fan-shaped atomizing nozzles 10 facing the radiator core are arranged around the annular spray device 9; a fan 12 is arranged between the annular spray device 9 and the radiator 13, and the fan 12 is coaxial with the annular spray device 9.

[0037] Furthermore, the core parameter sensors for thermal management of the engineering vehicle include an engine coolant temperature sensor 16, a hydraulic oil temperature sensor 15, an ambient temperature sensor 17, and an engine load rate sensor 18; used to collect the core parameters for thermal management of the engineering vehicle in real time; the core parameters for thermal management of the engineering vehicle include engine coolant temperature, hydraulic oil temperature, ambient temperature, and engine load rate. Among them, the engine coolant temperature sensor 16 is used to collect the engine coolant temperature, the hydraulic oil temperature sensor 15 is used to collect the hydraulic oil temperature in the hydraulic oil tank 8, the ambient temperature sensor 17 is used to collect the ambient temperature, and the engine load rate sensor 18 is used to collect the load rate of the engine 7.

[0038] Furthermore, the sensor data receiving unit 14 is used to receive the core parameters of thermal management of the engineering vehicle collected by the core parameter sensor of thermal management of the engineering vehicle, as well as the pressure signals of the filter pressure sensor 3 and the water pump pressure sensor 19. Furthermore, the control unit 5 receives the core parameters of the engineering vehicle thermal management from the sensor data receiving unit 14 and compares and analyzes them with preset thresholds; it generates control commands based on the threshold judgment results to dynamically adjust the output flow rate of the water pump 6 and the speed of the fan 12; it also receives pressure signals from the filter pressure sensor 3 and the water pump pressure sensor from the sensor data receiving unit, triggering a visual alarm on the whole machine control instrument to prompt maintenance personnel to troubleshoot the fault; it can dynamically adjust the cooling water flow rate in the water pump 6 pipeline according to the rate of decrease of engine coolant temperature or the rate of decrease of hydraulic oil temperature in hydraulic oil tank 8; it also has data storage and export functions, which can record and store high temperature and injection duration, and the stored information can be exported to assist in the analysis of the temperature change process of radiator 13, and then analyze the cause of high temperature.

[0039] Furthermore, the ability to dynamically adjust the cooling water flow rate in the water pump 6 pipeline based on the rate of decrease in engine coolant temperature or the rate of decrease in hydraulic oil temperature in the hydraulic oil tank 8 is as follows: when the rate of decrease in hydraulic oil temperature is greater than a preset rate threshold, the output flow rate of the water pump 6 is reduced; when the rate of decrease in hydraulic oil temperature is less than a preset rate threshold, the output flow rate of the water pump 6 is increased; when the rate of decrease in engine coolant temperature is greater than a preset rate threshold, the output flow rate of the water pump 6 is reduced; when the rate of decrease in engine coolant temperature is less than a preset rate threshold, the output flow rate of the water pump 6 is increased.

[0040] The water tank 1 is used to store water. It can use the water tank of the engineering vehicle itself, such as the milling machine or the road roller, or a dedicated water tank can be set up. The switch 2 is used to control the flow of water in the pipeline, so that the water in the water tank 1 does not need to be released when cleaning or maintaining the pipeline; the switch 2 is in the open state by default when the system is started, and can be manually turned off when cleaning or maintaining the pipeline. The hydraulic oil tank 8 is a storage carrier for hydraulic oil; the hydraulic oil tank is a component that comes with the existing engineering vehicle and is not a newly added necessary component. The engine coolant temperature sensor 16 is installed at the outlet of the cylinder coolant passage of the engine 7 or on the main water inlet pipe of the radiator 13, directly contacting the circulating engine coolant to ensure that the collected temperature is consistent with the actual coolant temperature.

[0041] The hydraulic oil temperature sensor 15 is fixed in the lower part of the inner wall of the hydraulic oil tank 8. The sensor probe is completely immersed in the hydraulic oil and is far away from the oil outlet, return port and other areas with strong oil flow, so as to avoid local oil temperature fluctuations affecting the measurement accuracy.

[0042] The ambient temperature sensor 17 is installed in an unobstructed area inside the front bumper of the engineering vehicle and in front of the radiator 13, away from heat sources such as the engine exhaust port and hydraulic oil pipes, to ensure that the actual ambient temperature is collected.

[0043] The engine load rate sensor 18 is installed on the flywheel housing of the engine 7, or near the speed signal gear ring connected to the engine crankshaft. It calculates the real-time engine load rate by monitoring crankshaft speed and torque-related signals, in conjunction with ECU data.

[0044] The filter pressure sensor 3 monitors the pipeline pressure between the switch 2 and the filter 4. When the pressure is higher than the preset maximum pressure value, it indicates that the filter 4 is blocked; when the pressure is lower than the preset minimum pressure value, it indicates that there is a fault in the pipeline between the filter and the water tank. The filter pressure sensor 3 transmits the pressure signal to the sensor data receiving unit 14, and the sensor data receiving unit 14 transmits the pressure signal to the control unit 5, which displays the alarm signal on the whole machine control instrument.

[0045] The water pump pressure sensor 19 monitors the pipeline pressure between the water pump 6 and the annular injection device 9. When the pressure is higher than the preset maximum pressure value, it indicates that the annular injection device 9 is blocked. When the pressure is lower than the preset minimum pressure value, it indicates that the water pump 6 is faulty. The water pump pressure sensor transmits the pressure signal to the sensor data receiving unit 14, and the sensor data receiving unit 14 transmits the pressure signal to the control unit 5, which displays the alarm signal on the whole machine control instrument.

[0046] The filter 4 is used to filter impurities in the cooling water to prevent clogging of pipes and nozzles 10. The water pump 6 provides power to the cooling water and responds to the commands of the control unit 5 to realize dynamic graded regulation of the flow rate and secondary regulation based on the temperature drop rate. The annular spray device 9 includes two parts: a nozzle 10 and an annular water channel 11. The annular water channel 11 has an annular structure and is installed at the same center as the fan 12. Several fan-shaped atomizing nozzles 10 facing the radiator core are arranged around it. The cooling water is atomized into fine water mist, increasing the contact area between the cooling water and the radiator core. The co-center installation layout ensures that the water mist is evenly covered on the windward side of the radiator 13 under the guidance of the airflow of the fan 12, avoiding uneven local heat dissipation. At the same time, when the high-pressure and high-speed airflow carries the water mist through the core channel of the radiator 13, it can clean the dust, catkins and other debris accumulated in the channel, clear the heat dissipation channel, and ensure the efficiency of airflow heat exchange.

[0047] The radiator 13 is used to transfer the heat of the engine coolant and the hydraulic oil in the hydraulic oil tank 8 to the external environment; its core channel provides a contact area for the heat exchange between the engine coolant, the hydraulic oil in the hydraulic oil tank 8 and the external environment; in conjunction with the water mist cooling of the annular spray device 9, the heat conduction efficiency can be greatly improved, and the performance of the engine 7 and the hydraulic system can be prevented from deteriorating or malfunctioning due to high temperature.

[0048] The fan 12 is coaxially arranged with the annular spray device 9 and positioned between the annular spray device and the radiator. When operating, it generates directional airflow, which drives the water mist generated by the annular spray device 9 to flow evenly through the core channel of the radiator 13, accelerating water mist evaporation and heat dissipation. The co-central arrangement with the annular spray device 9 maximizes the synergistic effect of airflow and water mist, improving heat dissipation efficiency while preventing water mist from spreading to non-heat dissipation areas. Furthermore, the fan 12 receives speed adjustment commands from the control unit 5 and can dynamically adjust its speed according to operating conditions, reducing power consumption and operating noise.

[0049] The specific workflow of the system is as follows: The core parameter sensor for thermal management of engineering vehicles collects the engine coolant temperature, hydraulic oil temperature in hydraulic tank 8, ambient temperature, and engine load rate in real time, and transmits them to the sensor data receiving unit. The sensor data receiving unit 14 transmits the core parameters of the thermal management of the engineering vehicle to the control unit 5; The control unit 5 compares the received core parameters of thermal management of the engineering vehicle with the built-in preset thresholds to determine whether the preset thresholds are met. If the preset threshold is met, the control unit 5 generates a control command and sends it to the water pump 6. The water pump 6 starts and outputs cooling water at the corresponding flow rate. The fan 12 is adjusted to the appropriate speed. The cooling water passes through the switch 2, the filter pressure sensor 3, the filter 4, the water pump 6, and the water pump pressure sensor in sequence, and is delivered to the annular spray device 9. After being atomized by the fan-shaped atomizing nozzle 10, it covers and flows through the core channel of the radiator 13 under the airflow of the fan 12. On the one hand, the water mist absorbs heat through evaporation to achieve cooling, and on the other hand, it cleans the debris in the core channel. When water mist is sprayed onto the core of the radiator 13 by the airflow of the fan 12, it can clean the dust, catkins and other debris accumulated in the core channel and clear the heat dissipation channel. During the process, the control unit 5 monitors the engine coolant temperature or the rate of temperature drop of the hydraulic oil in the hydraulic oil tank 8 in real time and dynamically adjusts the flow rate of the water pump 6; at the same time, it records and stores the high temperature and injection duration; the filter pressure sensor 3 and the water pump pressure sensor monitor the pipeline pressure in real time, and if an abnormality occurs, an alarm is triggered to prompt maintenance personnel to troubleshoot the fault in time.

[0050] Furthermore, the preset threshold includes a preset coolant alarm temperature. Preset hydraulic oil alarm temperature First load rate threshold, second load rate threshold, first ambient temperature threshold, and second ambient temperature threshold; When the engine coolant temperature reaches At this time, the control unit 5 controls the water pump 6 to start, and the cooling water is sprayed through the annular spray device 9 and the fan-shaped atomizing nozzle 10 to cool the radiator 13 until the engine coolant temperature drops to a certain level. The injection duration for this process is t1. When the temperature of the hydraulic oil in hydraulic oil tank 8 reaches At this time, the control unit 5 controls the water pump 6 to start, and the cooling water is sprayed through the annular spray device 9 and the fan-shaped atomizing nozzle 10 to cool the radiator 13 until the temperature of the hydraulic oil in the hydraulic oil tank 8 drops to a certain level. The injection duration for this process is t1. When the load rate of engine 7 exceeds the first load rate threshold and the ambient temperature exceeds the first ambient temperature threshold, control unit 5 controls water pump 6 to output the first flow rate and adjusts fan 12 to a suitable low speed. When the load rate of engine 7 exceeds the second load rate threshold and the ambient temperature exceeds the second ambient temperature threshold, control unit 5 controls water pump 6 to output the second flow rate and adjusts fan 12 to a suitable high speed (higher than the fan speed when outputting the first flow rate). The second load rate threshold is greater than the first load rate threshold, the second ambient temperature threshold is greater than the first ambient temperature threshold, and the second flow rate is greater than the first flow rate.

[0051] Example 2: This embodiment also provides a dynamic thermal management method for engineering vehicles, based on a dynamic thermal management system for engineering vehicles in Embodiment 1. By collecting core thermal management parameters of the engineering vehicle and comparing them with preset thresholds, the method dynamically adjusts the output flow rate of the water pump 6 and the speed of the fan 12, simultaneously achieving water mist cooling and radiator self-cleaning. It optimizes flow distribution based on the temperature drop rate and implements fault warning through pressure monitoring. Key data is also recorded for subsequent analysis. The specific steps are as follows: Step S1: Collect the core parameters of thermal management of the engineering vehicle in real time through the core parameter sensor of thermal management of the engineering vehicle, and transmit the collected parameter signals to the sensor data receiving unit 14; the sensor data receiving unit 14 transmits the core parameters of thermal management of the engineering vehicle to the control unit 5. The core parameters for thermal management of engineering vehicles include engine coolant temperature. Hydraulic oil temperature in hydraulic oil tank 8 Operating environment temperature Engine load rate ; The data acquisition frequency is dynamically adapted to the operating conditions of the engineering vehicles to ensure the real-time and accuracy of parameter transmission, providing data support for subsequent threshold determination.

[0052] In step S2, the control unit 5 receives the core parameters of the thermal management of the engineering vehicle collected in step S1, compares and analyzes them with the built-in preset thresholds, and determines whether the triggering conditions are met. The triggering conditions include emergency cooling triggering conditions, primary heat dissipation triggering conditions, and secondary heat dissipation triggering conditions; The comparison and analysis with the built-in preset thresholds includes high temperature alarm threshold judgment and operating condition classification threshold judgment. The specific judgment logic is as follows: The high temperature alarm threshold is determined by setting a preset coolant alarm temperature. Preset hydraulic oil alarm temperature ; like ≥ or ≥ The emergency cooling trigger condition is met. The operating condition classification threshold determination includes a preset first load rate threshold. Second load rate threshold First ambient temperature threshold Second ambient temperature threshold ,and > , > ; like > and > The first-level heat dissipation trigger condition is met. like > and > The conditions for triggering secondary heat dissipation are met. in, This refers to the engine coolant temperature. Hydraulic oil temperature The ambient temperature of the work environment. For engine load rate, For the first load rate threshold, For the second load rate threshold, The first ambient temperature threshold, This is the second ambient temperature threshold.

[0053] If none of the above triggering conditions are met, the control unit 5 determines that active cooling does not need to be started, and the core parameter sensors for thermal management of the engineering vehicle continue to collect parameters and monitor the status.

[0054] In step S3, based on the judgment result of step S2, control unit 5 generates corresponding control commands to synchronously control water pump 6 and fan 12 to perform linked actions: If the emergency cooling trigger condition is met, control the water pump 6 to start and output a cooling flow rate adapted to the emergency cooling, and at the same time control the fan 12 to adjust to a high speed to ensure water mist evaporation efficiency and heat dissipation effect. If the first-level heat dissipation trigger condition is met, control the water pump 6 to start and output the first flow rate, and at the same time control the fan 12 to adjust to a suitable low speed, taking into account both heat dissipation requirements and energy saving and noise reduction. If the secondary heat dissipation trigger condition is met, control the water pump 6 to start and output the second flow rate, and the second flow rate is greater than the first flow rate. At the same time, control the fan 12 to adjust to a suitable high speed (higher than the fan speed when outputting the first flow rate) to match the strong heat dissipation requirements under high load and high temperature environment.

[0055] Water pump 6 responds to control commands and outputs cooling water. The cooling water passes through switch 2, filter pressure sensor 3, filter 4, water pump 6, and water pump pressure sensor 19 in sequence, and is then delivered to the annular spray device 9. The fan-shaped atomizing nozzles 10 of the annular spray device 9 atomize the cooling water into fine water mist, which, driven by the airflow of the fan 12, evenly covers the windward side of the radiator 13 and flows through the radiator core channels. Water mist evaporates and absorbs heat, quickly reducing the temperature of the radiator core, thereby dissipating the heat from the engine coolant and the hydraulic oil in the hydraulic oil tank 8. High-pressure, high-speed airflow carries water mist to flush the radiator core channels, cleaning away dust, catkins, and other debris accumulated in the channels, clearing the heat dissipation channels, ensuring airflow heat exchange efficiency, and completing self-cleaning.

[0056] During the cooling and self-cleaning process, the control unit 5 monitors the rate of temperature drop of the engine coolant or the rate of temperature drop of the hydraulic oil in the hydraulic oil tank 8 in real time, and dynamically adjusts the output flow of the water pump 6 according to the rate: If the rate of decrease in engine coolant temperature or the rate of decrease in hydraulic oil temperature in hydraulic oil tank 8 is greater than the preset rate threshold, it indicates that the cooling efficiency is too high. Control unit 5 controls water pump 6 to reduce the output flow to avoid wasting coolant. If the rate of decrease in engine coolant temperature or hydraulic oil temperature in hydraulic oil tank 8 is less than the preset rate threshold, it indicates insufficient cooling efficiency. Control unit 5 controls water pump 6 to increase output flow to ensure that the temperature drops quickly to a safe range. (For example, if the rate of decrease in coolant temperature or hydraulic oil temperature is greater than the preset rate threshold, the output flow is reduced; if the rate of decrease in coolant temperature or hydraulic oil temperature is less than the preset rate threshold, the output flow is increased.) If the emergency cooling trigger condition is met, the flow rate will be continuously adjusted until the engine coolant temperature is less than the preset coolant alarm temperature and the hydraulic oil temperature in the hydraulic oil tank 8 is less than the preset hydraulic oil alarm temperature. The cumulative injection time of this process is the single injection time.

[0057] Furthermore, the control unit 5 synchronously records and stores key data, including the threshold type for triggering cooling, high temperature peak (maximum engine coolant temperature / maximum hydraulic oil temperature in hydraulic tank 8), single injection duration, water pump 6 flow rate adjustment curve, and temperature drop rate curve. The stored data can be exported by the control unit 5 to assist in analyzing the temperature change process of radiator 13, tracing the cause of high temperature, and providing a basis for subsequent operation and maintenance optimization.

[0058] Step S4: Throughout the cooling process, the filter pressure sensor 3 and the water pump pressure sensor 19 monitor the pressure status of the corresponding pipelines in real time and transmit the pressure signal to the control unit 5 via the sensor data receiving unit 14. If the filter pressure sensor 3 detects a pressure ≥ the preset maximum pressure value, the control unit 5 determines that the filter 4 is clogged and triggers a visual alarm on the whole machine control instrument; If the water pump pressure sensor 19 detects that the pressure is greater than or equal to the preset maximum pressure value, the control unit 5 determines that the fan-shaped atomizing nozzle 10 is blocked and triggers a visual alarm on the whole machine control instrument. If the filter pressure sensor 3 or the water pump pressure sensor 19 detects that the pressure is ≤ the preset minimum pressure value, the control unit 5 determines that the water pump 6 is malfunctioning or there is a pipeline leak, and triggers a visual alarm on the whole machine control instrument. The alarm signal simultaneously alerts maintenance personnel to promptly troubleshoot the fault and prevent engineering vehicle malfunctions caused by cooling system failure.

[0059] Step S5: When any of the following conditions are met, the control unit 5 generates a stop command, controls the water pump 6 to shut down, the fan 12 to return to standby speed, and the system to reset to the parameter monitoring state: When the emergency cooling trigger condition is met, the engine coolant temperature is less than the preset coolant alarm temperature and the hydraulic oil temperature in the hydraulic oil tank 8 is less than the preset hydraulic oil alarm temperature, and the cumulative injection time reaches the single injection time. When the first-level or second-level heat dissipation trigger conditions are met, the engine 7 load rate is ≤ the corresponding load rate threshold or the ambient temperature is ≤ the corresponding ambient temperature threshold, and the engine coolant temperature and the hydraulic oil temperature in the hydraulic oil tank 8 are both stable within the safe operating range. After troubleshooting, the water pump pressure sensor 19 and the filter pressure sensor 3 detected that the pipeline pressure had returned to the normal range, and the core parameters were normal.

[0060] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A dynamic thermal management system for engineering vehicles, characterized in that, Includes sensor data receiving unit, core parameter sensors for thermal management of engineering vehicles, control unit, water tank, switch, filter pressure sensor, water pump pressure sensor, filter, water pump, annular injection device, radiator and fan; The core parameter sensor for thermal management of engineering vehicles is electrically connected to the sensor data receiving unit. The core parameter sensor for thermal management of engineering vehicles collects the core parameters for thermal management of engineering vehicles in real time and transmits them to the sensor data receiving unit. The sensor data receiving unit is electrically connected to the control unit, transmitting the core parameters of the engineering vehicle's thermal management to the control unit. The control unit is electrically connected to the water pump and fan. The control unit generates control commands based on the received core parameters of the thermal management of the engineering vehicle. When the core parameters of the thermal management of the engineering vehicle meet the preset threshold, the control unit controls the water pump and fan to start and dynamically adjusts the output flow of the water pump and the fan speed. The water pump inlet is connected to the filter outlet via a pipeline, the filter inlet is connected to the first terminal of the switch via a pipeline, and the second terminal of the switch is connected to the water tank outlet via a pipeline; a filter pressure sensor is installed on the pipeline between the filter and the switch. The outlet of the water pump is connected to the inlet of the annular jet device via a pipeline; a water pump pressure sensor is installed on the pipeline between the water pump and the annular jet device. Both the filter pressure sensor and the water pump pressure sensor are electrically connected to the sensor data receiving unit, transmitting the pressure signal to the sensor data receiving unit. The annular spray device is located on the windward side of the radiator, and is surrounded by several fan-shaped atomizing nozzles facing the radiator core. A fan is installed between the annular spray device and the radiator, and the fan is coaxial with the annular spray device.

2. The system according to claim 1, characterized in that, The core parameter sensors for thermal management of the engineering vehicle include an engine coolant temperature sensor, a hydraulic oil temperature sensor, an ambient temperature sensor, and an engine load rate sensor. The core parameters for thermal management of the engineering vehicle include engine coolant temperature, hydraulic oil temperature, ambient temperature, and engine load rate. Among them, the engine coolant temperature sensor is used to collect the engine coolant temperature, the hydraulic oil temperature sensor is used to collect the hydraulic oil temperature, the ambient temperature sensor is used to collect the ambient temperature, and the engine load rate sensor is used to collect the engine load rate.

3. The system according to claim 2, characterized in that, The preset thresholds include a first load rate threshold, a second load rate threshold, a first ambient temperature threshold, and a second ambient temperature threshold. When the engine load rate exceeds the first load rate threshold and the ambient temperature exceeds the first ambient temperature threshold, the control unit controls the water pump to output the first flow rate and simultaneously adjusts the fan speed. When the engine load rate exceeds the second load rate threshold and the ambient temperature exceeds the second ambient temperature threshold, the control unit controls the water pump to output the second flow rate and adjusts the fan speed synchronously. Among them, the second load rate threshold is greater than the first load rate threshold, the second ambient temperature threshold is greater than the first ambient temperature threshold, and the second flow rate is greater than the first flow rate.

4. The system according to claim 1, characterized in that, The filter pressure sensor monitors the pipeline pressure between the switch and the filter. When the pressure is higher than the preset maximum pressure value, it determines that the filter is blocked; when the pressure is lower than the preset minimum pressure value, it determines that there is a fault in the pipeline between the filter and the water tank and generates a pressure signal. The filter pressure sensor transmits the pressure signal to the sensor data receiving unit, which in turn transmits the pressure signal to the control unit. The control unit then displays an alarm signal on the instrument panel of the whole machine.

5. The system according to claim 1, characterized in that, The water pump pressure sensor monitors the pipeline pressure between the water pump and the annular jet device. When the pressure is higher than the preset maximum pressure value, it is determined that the annular jet device is blocked. When the pressure is lower than the preset minimum pressure value, it is determined that the water pump is faulty and a pressure signal is generated. The water pump pressure sensor transmits the pressure signal to the sensor data receiving unit, which in turn transmits the pressure signal to the control unit. The control unit then displays the alarm signal on the instrument panel of the whole machine.

6. The system according to claim 2, characterized in that, The preset threshold also includes a preset coolant alarm temperature and a preset hydraulic oil alarm temperature; When the engine coolant temperature reaches the preset coolant alarm temperature, the control unit controls the water pump to start, and the coolant is sprayed through the annular spray device and the fan-shaped atomizing nozzle to cool the radiator until the engine coolant temperature drops below the preset coolant alarm temperature. When the hydraulic oil temperature reaches the preset hydraulic oil alarm temperature, the control unit controls the water pump to start and adjusts the fan to a suitable high speed. Cooling water is sprayed through the annular spray device and the water mist is sprayed from the fan-shaped atomizing nozzle to cool the radiator until the hydraulic oil temperature drops below the preset hydraulic oil alarm temperature.

7. The system according to claim 6, characterized in that, The control unit dynamically adjusts the flow rate of cooling water in the water pump pipeline according to the rate of decrease of the engine coolant temperature or the rate of decrease of the hydraulic oil temperature. When the rate of decrease in hydraulic oil temperature exceeds a preset threshold, reduce the water pump output flow. When the rate of decrease in hydraulic oil temperature is less than the preset rate threshold, increase the water pump output flow rate; When the rate of decrease of engine coolant temperature exceeds a preset threshold, the water pump output flow rate is reduced; when the rate of decrease of engine coolant temperature is less than the preset threshold, the water pump output flow rate is increased.

8. A dynamic thermal management method for engineering vehicles, characterized in that, Includes the following steps: Step S1: Collect the core thermal management parameters of the engineering vehicle in real time through the core thermal management parameter sensor, and transmit the collected parameter signals to the sensor data receiving unit. The sensor data receiving unit then transmits the core thermal management parameters of the engineering vehicle to the control unit. The core thermal management parameters of the engineering vehicle include engine coolant temperature, hydraulic oil temperature, ambient operating temperature, and engine load rate. Step S2: The control unit receives the core parameters of thermal management of the engineering vehicle collected in step S1, and compares and analyzes them with the built-in preset threshold to determine whether the triggering conditions are met. Step S3: Based on the judgment result of step S2, the control unit generates a corresponding control command and synchronously controls the water pump and fan to perform actions. If the triggering condition is met, the control unit generates a control command corresponding to the triggering condition and sends it to the water pump to control the water pump to start. The cooling water in the water tank is transported to the annular spray device, and water mist is formed by the fan-shaped atomizing nozzle of the annular spray device. The water mist covers and flows through the radiator core channel under the drive of the fan airflow. Step S4: The filter pressure sensor and the water pump pressure sensor monitor the pressure status of the corresponding pipeline in real time and transmit the pressure signal to the control unit through the sensor data receiving unit.

9. The method according to claim 8, characterized in that, In step S1, the core parameter sensors for thermal management of the engineering vehicle include an engine coolant temperature sensor, a hydraulic oil temperature sensor, an ambient temperature sensor, and an engine load rate sensor. Among them, the engine coolant temperature sensor is used to collect the engine coolant temperature, the hydraulic oil temperature sensor is used to collect the hydraulic oil temperature, the ambient temperature sensor is used to collect the ambient temperature, and the engine load rate sensor is used to collect the engine load rate.

10. The method according to claim 9, characterized in that, In step S2, the comparison and analysis with the built-in preset thresholds includes high temperature alarm threshold judgment and operating condition classification threshold judgment. The specific judgment logic is as follows: The high-temperature alarm threshold determination includes preset coolant alarm temperature and preset hydraulic oil alarm temperature; if... ≥ or ≥ The emergency cooling trigger condition is met. in, This refers to the engine coolant temperature. Hydraulic oil temperature This is the coolant alarm temperature. Hydraulic oil alarm temperature; The operating condition classification threshold determination includes a preset first load rate threshold. Second load rate threshold First ambient temperature threshold Second ambient temperature threshold ,and > , > ; like > and > The first-level heat dissipation trigger condition is met. like > and > The conditions for triggering secondary heat dissipation are met. in, The ambient temperature of the work environment. For engine load rate, For the first load rate threshold, For the second load rate threshold, The first ambient temperature threshold, This is the second ambient temperature threshold. If none of the above triggering conditions are met, the control unit determines that active cooling does not need to be activated, and the core parameter sensors for thermal management of the engineering vehicle continue to collect parameters and monitor the status.

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