Commercial vehicle cooling system and method

Abstract

The invention provides a commercial vehicle cooling system and method, and belongs to the technical field of commercial vehicle heat management, the system comprises a fan, a radiator, an airflow guide mechanism, an air multiplier and a controller; an outlet of the air multiplier sleeves the front end or the rear end of the radiator, and an inlet of the air multiplier is communicated with the fan; the airflow guide mechanism is connected with an outlet of the air multiplier and is used for adjusting the angle of the outlet of the air multiplier; and the controller is in communication connection with the fan and the airflow guiding mechanism and used for determining the target air speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information in the vehicle driving process and adjusting the air speed of the fan based on the target air speed. And controlling the airflow guide mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle. According to the cooling fan, the technical problem that aerodynamic noise and mechanical noise generated in the working process of the cooling fan are effectively reduced while the heat dissipation requirement of the commercial vehicle is met can be solved.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology for commercial vehicles, and specifically to a cooling system and method for commercial vehicles. Background Technology

[0002] The demand for engine horsepower in the current commercial vehicle market continues to rise, and the increase in engine power inevitably leads to a significant increase in heat dissipation. This places higher demands on the performance of the core component of the cooling system—the fan—specifically requiring a further increase in fan diameter to enhance heat dissipation. However, in the overall vehicle design, to ensure that the original size of the airflow channel remains unchanged, the space available for arranging cooling modules at the front of the chassis is already saturated, making it difficult to accommodate radiators and cooling fans that are increasing in size accordingly. The space constraint problem is becoming increasingly prominent.

[0003] Meanwhile, regulations on noise control for commercial vehicles are becoming increasingly stringent. Both national standards (GB) and European standards (EU) have imposed stricter limits on the operating noise of the entire vehicle. Against this backdrop, effectively reducing the aerodynamic and mechanical noise generated by the cooling fan while meeting heat dissipation requirements has become a key challenge that needs to be addressed in the design and optimization of commercial vehicle cooling systems. Summary of the Invention

[0004] In view of this, it is necessary to provide a commercial vehicle cooling system and method to solve the technical problem of effectively reducing the aerodynamic and mechanical noise generated during the operation of the cooling fan while meeting the heat dissipation requirements of commercial vehicles.

[0005] To address the aforementioned problems, in a first aspect, the present invention provides a commercial vehicle cooling system, comprising: a fan, a radiator, an airflow guiding mechanism, an air multiplier, and a controller; The outlet of the air multiplier is fitted to the front or rear end of the radiator, and the inlet of the air multiplier is aligned with the fan. The airflow guiding mechanism is connected to the outlet of the air multiplier and is used to adjust the outlet angle of the air multiplier. The controller is communicatively connected to the fan and the airflow guiding mechanism, and is used to determine the target wind speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information during vehicle travel, and to adjust the wind speed of the fan based on the target wind speed, and to control the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle.

[0006] In one possible implementation, the commercial vehicle cooling system also includes: The T-BOX is communicatively connected to the controller and is used to acquire road spectrum information during vehicle operation and send the road spectrum information to the controller.

[0007] In one possible implementation, a rubber cushion assembly and a support beam are used. The support beam is fixed to the vehicle frame, the rubber pad assembly is fixed to the support beam, and the air multiplier is fixed to the rubber pad assembly.

[0008] In one possible implementation, the air multiplier is a ring channel structure.

[0009] In one possible implementation, the target wind speed of the fan and the target outlet angle of the air multiplier are determined based on road spectrum information during vehicle travel, including: The road spectrum information during vehicle travel and the vehicle speed are input into the trained predictive cooling model to obtain the target wind speed of the fan and the target outlet angle of the air multiplier. The predictive cooling model is obtained by training a neural network model based on preset road spectrum information samples and vehicle speed samples, using the required wind speed of the fan and the required outlet angle of the air multiplier as sample labels; the neural network model is a convolutional neural network, a fully connected neural network, or a generative adversarial network.

[0010] In one possible implementation, adjusting the wind speed of the fan based on the target wind speed includes: The wind speed of the fan is adjusted based on the target wind speed, and the wind speed difference between the target wind speed and the actual wind speed of the fan is determined. Based on the wind speed difference, the wind speed of the fan is adjusted using a PID algorithm.

[0011] In one possible implementation, adjusting the wind speed of the fan based on the target wind speed further includes: The system acquires the vehicle's ambient temperature, coolant temperature, and load signal, corrects the target wind speed based on the ambient temperature, coolant temperature, and load signal, and adjusts the fan speed based on the corrected target wind speed.

[0012] In one possible implementation, controlling the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle includes: Based on the target outlet angle, the airflow guiding mechanism is controlled to adjust the outlet angle of the air multiplier, and the angle difference between the target outlet angle and the actual outlet angle of the air multiplier is determined. Based on the angle difference, the outlet angle of the air multiplier is adjusted using a PID control algorithm.

[0013] In one possible implementation, the controller is further configured to adjust the outlet angle of the air multiplier based on the angle difference and in conjunction with a PID control algorithm, and if it is determined that there are still some hot spots in the radiator, readjust the outlet angle of the air multiplier so that the outlet of the air multiplier is aligned with the hot spots.

[0014] Secondly, the present invention also provides a commercial vehicle cooling method, the method being applied to the commercial vehicle cooling system described in any of the above claims, the method comprising: The controller determines the target wind speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information during the vehicle's journey. The controller adjusts the wind speed of the fan based on the target wind speed, and controls the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle.

[0015] The beneficial effects of adopting the above implementation method are: the commercial vehicle cooling system and method provided by the present invention, This system combines an air multiplier and a fan to replace the traditional bladed fan. The fan draws in air, which is then amplified by the air multiplier using Bernoulli's principle, creating a "main airflow + induced airflow" multiplication effect. This typically increases airflow by 10-15 times. The airflow is then output axially along a ring-shaped channel. The air multiplication technology improves the uniformity of airflow on the heat dissipation surface. The controller, combined with road spectrum information, calculates the target wind speed and target outlet angle, allowing for flexible adaptation to the cooling needs of commercial vehicles under various operating conditions, such as high temperature, low temperature, and high altitude, significantly improving heat dissipation efficiency. Simultaneously, the smooth airflow exiting through the air multiplier nozzles effectively reduces operating noise and mitigates vibration issues caused by the connection between the traditional fan and engine drive system, significantly improving the overall NVH performance of the vehicle. This solves the technical problem of effectively reducing aerodynamic and mechanical noise generated during the operation of the cooling fan while meeting the heat dissipation requirements of commercial vehicles. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the layout of an embodiment of the commercial vehicle cooling system provided by the present invention; Figure 2 A schematic diagram of a control system for an embodiment of the commercial vehicle cooling system provided by the present invention; Figure 3 A schematic diagram of the control strategy for an embodiment of the commercial vehicle cooling system provided by the present invention; Figure 4 This is a flowchart of one embodiment of the commercial vehicle cooling method provided by the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0021] The naming or numbering of steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This invention aims to solve the problems of large space occupation, low reliability and durability, high noise, high maintenance cost and insufficient heat dissipation efficiency of traditional bladed fans in existing commercial vehicle cooling systems. It provides a commercial vehicle cooling system based on air multiplication technology, which is suitable for the limited space and complex operating conditions of commercial vehicles, reduces noise and improves heat dissipation performance and reliability.

[0024] This invention provides a commercial vehicle cooling system and method, which will be described below.

[0025] like Figure 1 As shown, the present invention provides a commercial vehicle cooling system, including: a fan (not shown in the figure), a radiator 101, an airflow guiding mechanism 102, an air multiplier 103, and a controller (not shown in the figure). The outlet of the air multiplier 103 is fitted onto the front or rear end of the radiator 101, the inlet of the air multiplier 103 is aligned with the fan, and the inlet of the air multiplier 103 can be connected to the fan. The airflow guiding mechanism 102 is connected to the outlet of the air multiplier 103 and is used to adjust the outlet angle of the air multiplier 103. The controller is communicatively connected to the fan and the airflow guiding mechanism 102. It is used to determine the target wind speed of the fan and the target outlet angle of the air multiplier 103 based on the road spectrum information during vehicle travel, and to adjust the wind speed of the fan based on the target wind speed. It also controls the airflow guiding mechanism 102 to adjust the outlet angle of the air multiplier 103 based on the target outlet angle. Since the outlet angle of the air multiplier 103 corresponds to the guiding direction, the outlet angle of the air multiplier 103 is also called the guiding angle.

[0026] Understandably, traditional bladed fan cooling systems, which rely on "fan blade rotation to drive airflow" as their core operating mode, suffer from technical drawbacks such as large space occupation, insufficient reliability, severe noise pollution, high maintenance costs, and limited cooling efficiency. This invention, employing air multiplication technology, offers significant advantages over traditional bladed fans. Its high space utilization and compact structure allow for precise adaptation to the confined layout of commercial vehicle engine compartments. Furthermore, this invention enhances airflow uniformity on the heat dissipation surface through air multiplication technology, and, combined with intelligent control strategies to adjust airflow, flexibly adapts to the cooling needs of commercial vehicles under various operating conditions, including high temperatures, extreme cold, and high altitudes, resulting in a significant improvement in heat dissipation efficiency. Simultaneously, the smooth ejection of airflow through the annular nozzle of the air multiplier 103 effectively reduces operating noise and mitigates vibration issues arising from the connection between the traditional fan and engine drive system, significantly improving the overall vehicle NVH (noise, vibration, and acoustic harshness) performance. Moreover, the bladeless design not only avoids the risk of failure due to foreign object impacts during vehicle operation, improving reliability, but also completely solves the problem of fan blade wear, reducing maintenance costs.

[0027] Structural layout: It consists of a high-pressure centrifugal fan (built into the side of the frame or cooling module), an air multiplier 103 (without external fan blades), and an airflow guiding mechanism 102, forming an overall "ring-shaped frame" with no exposed rotating parts. The air multiplier 103 can be directly fitted onto the front or rear of the radiator 101, and is integrated with the cooling module, resulting in low airflow leakage and more stable heat dissipation efficiency.

[0028] Intelligent control strategy: Fully electronically controlled logic, the ECU (controller) collects signals such as coolant temperature, transmission oil temperature, air conditioning load, and fan pressure in real time, and calculates the "optimal fan speed + guide angle" through algorithms to achieve "stepless adjustment" and more precise airflow control; Supports "zoned heat dissipation": Some models can adjust the guide angle to concentrate the airflow to the hot spot area of ​​radiator 101 (such as the high temperature area in the middle of the core), improving local heat dissipation efficiency.

[0029] In some embodiments, the commercial vehicle cooling system further includes: The T-BOX (Telematics Processor) is communicatively connected to the controller and is used to acquire road spectrum information during vehicle operation and send the road spectrum information to the controller.

[0030] Understandably, this invention integrates the road spectrum data interaction function of T-BOX. By collecting advance data such as altitude, slope, and ambient temperature of the vehicle's driving route through T-BOX, i.e., road spectrum data, and combining it with real-time parameters such as engine load and coolant temperature, a predictive cooling model is constructed. This model predicts the fan speed and the outlet angle of the air multiplier, and adjusts the fan operation status 5-10 minutes in advance (such as increasing the air volume before climbing a hill). This improves the linearity of the heat dissipation output curve, avoids the problem of excessive temperature fluctuations in the traditional passive cooling mode, and reduces the energy loss of the entire vehicle. The energy-saving effect is particularly significant in scenarios such as long-distance freight and mountain driving. In some embodiments, continue to refer to Figure 1 The commercial vehicle cooling system also includes: rubber pad assembly 104 and support beam 105; The support beam 105 is fixed to the frame 106, the rubber pad assembly 104 is fixed to the support beam 105, and the air multiplier 103 is fixed to the rubber pad assembly 104.

[0031] Understandably, the rubber pad assembly 104 can serve to dampen shocks, provide anti-slip protection, and seal and insulate against sound.

[0032] In some embodiments, the air multiplier has an annular channel structure.

[0033] As can be understood, the working principle of an air multiplier is as follows: air is accelerated by a high-speed rotating annular air generator or airflow guide and discharged through a designed air duct, forming a stable airflow. This method avoids the mechanical complexity and noise problems of traditional fan blades, while achieving higher airflow and lower energy consumption. Depending on the chassis and engine compartment space requirements, the air multiplier and airflow guide mechanism are matched in an elliptical shape, and the guide angle can be adjusted according to heat dissipation needs.

[0034] In some embodiments, determining the target wind speed of the fan and the target outlet angle of the air multiplier based on road spectrum information during vehicle travel includes: The road spectrum information during vehicle travel and the vehicle speed are input into the trained predictive cooling model to obtain the target wind speed of the fan and the target outlet angle of the air multiplier. The predictive cooling model is obtained by training a neural network model based on preset road spectrum information samples and vehicle speed samples, using the required wind speed of the fan and the required outlet angle of the air multiplier as sample labels; the neural network model is a convolutional neural network, a fully connected neural network, or a generative adversarial network.

[0035] Understandably, when the destination is input, TBOX outputs road spectrum information to ECU based on the origin and destination. ECU combines the road spectrum information with the common vehicle speeds on the road segment during that time period to calculate and predict the cooling model, thereby obtaining the predicted heat dissipation demand. This results in the target wind speed of the fan and the target outlet angle (i.e., the airflow guide angle) of the air multiplier, which are then input to the high-pressure centrifugal fan and the airflow guide mechanism to achieve the predictive cooling function.

[0036] In some embodiments, adjusting the wind speed of the fan based on the target wind speed includes: The wind speed of the fan is adjusted based on the target wind speed, and the wind speed difference between the target wind speed and the actual wind speed of the fan is determined. Based on the wind speed difference, and combined with a PID (proportional, integral, and derivative) algorithm, the wind speed of the fan is adjusted.

[0037] It is understood that in this embodiment, the fully electric fan drive technology is applied in the commercial vehicle cooling system. Through independent motor drive and electronic control unit (ECU) collaboration, the air volume can be precisely adjusted from 0 to 100%, with an adjustment accuracy of ±5%, which is better than the currently widely used electric controlled silicone oil fan. It can output an adaptive air volume according to real-time cooling needs.

[0038] In some embodiments, adjusting the wind speed of the fan based on the target wind speed further includes: The system acquires the vehicle's ambient temperature, coolant temperature, and load signal, corrects the target wind speed based on the ambient temperature, coolant temperature, and load signal, and adjusts the fan speed based on the corrected target wind speed.

[0039] Understandably, by establishing a collaborative control mechanism of "bladeless fan + fully electronic drive", the ECU collects real-time data on coolant temperature, intercooler temperature, ambient temperature, load signal and T-BOX road spectrum, and dynamically matches the airflow output through a PID algorithm to ensure that the engine operating temperature remains stable within the optimal range.

[0040] Specifically, the target wind speed is first calculated using road spectrum data and vehicle speed. Under the current operating conditions, the heat dissipation effect corresponding to the target wind speed may not be ideal. Then, the target wind speed is corrected by combining ambient temperature, coolant temperature and load signal. Based on the wind speed difference between the corrected target wind speed and the actual wind speed, and combined with the PID algorithm, the wind speed of the fan is adjusted so that the adjusted target wind speed has a better cooling effect.

[0041] In addition, fault self-diagnosis and redundancy control functions can be designed. When the bladeless fan (i.e. the blower) has problems such as abnormal airflow or motor failure, the system can switch to the backup air volume adjustment mode within 0.5 seconds. At the same time, fault warning information is pushed through the instrument panel and the background management platform to ensure that the cooling system does not run uninterrupted and improve the driving safety of commercial vehicles.

[0042] In some embodiments, controlling the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle includes: Based on the target outlet angle, the airflow guiding mechanism is controlled to adjust the outlet angle of the air multiplier, and the angle difference between the target outlet angle and the actual outlet angle of the air multiplier is determined. Based on the angle difference, the outlet angle of the air multiplier is adjusted using a PID control algorithm.

[0043] It is understood that, based on the angle difference and combined with the PID control algorithm to adjust the outlet angle of the air multiplier, the ECU controls the airflow guiding mechanism to rotate the outlet angle of the air multiplier according to the control command obtained by the PID algorithm, thereby reducing the angle difference and making the outlet angle of the air multiplier conform to the target outlet angle.

[0044] In some embodiments, the controller is further configured to, after adjusting the outlet angle of the air multiplier based on the angle difference and in conjunction with a PID control algorithm, and after determining that there are still some hot spots in the radiator, readjust the outlet angle of the air multiplier so that the outlet of the air multiplier is aligned with the partial hot spots.

[0045] It is understood that this embodiment is equipped with hotspot detection and zoned heat dissipation functions, intelligently identifying areas with concentrated heat dissipation needs to achieve precise cooling and improve efficiency. Specifically, after adjusting the outlet angle of the air multiplier based on the angle difference and in conjunction with a PID control algorithm, the controller determines, based on the sensor detection results, whether there are still some areas where the heat dissipation effect is not as expected. If such areas exist, the outlet of the air multiplier is directed towards these hotspot areas for heat dissipation, rather than dissipating heat from the entire area, thereby improving heat dissipation efficiency.

[0046] In some embodiments, the schematic structure of the commercial vehicle cooling system provided by the present invention is as follows: Figure 1 As shown, it consists of six parts: radiator 101, airflow guiding mechanism 102, air multiplier 103, rubber pad assembly 104, support beam 105, and frame. The control system is as follows... Figure 2 As shown, it consists of components such as a sensor group, T-BOX, controller (ECU), and high-pressure centrifugal fan.

[0047] The control strategy is as follows: Sensors monitor ambient temperature, coolant temperature, load, and other signals in real time and input them to the controller, providing accurate operating data for the system. The T-BOX acquires road spectrum information in advance to help predict heat dissipation needs, enabling the system to anticipate operating conditions and plan heat dissipation strategies accordingly. The controller, as the core of the system, accurately calculates fan speed and guide angle based on sensor data and a predictive model to ensure cooling effectiveness. The combination of predicted heat dissipation needs and real-time adjustment—the predictive model estimating heat dissipation needs based on road spectrum information, and real-time adjustment dynamically optimizing fan speed and guide angle based on current sensor feedback—works together to ensure the cooling system is both forward-looking and flexible. Simultaneously, the system is equipped with hotspot detection and zoned heat dissipation functions, intelligently identifying areas with concentrated heat dissipation needs for precise cooling and improved efficiency. A cooling effect feedback mechanism ensures closed-loop system optimization, adjusting the control strategy based on actual cooling performance to maintain stable cooling performance. Overall, this electronic control system integrates the advantages of prediction and real-time adjustment, combining accurate calculation and intelligent feedback to provide an efficient and stable cooling solution for the equipment. The specific control logic is as follows: Figure 3 As shown.

[0048] Step 1: System initialization. With the vehicle ignition switch closed and the ECU powered on, a sensor communication link self-test is first performed. If the self-test passes, the ECU enters "signal acquisition standby mode" and the instrument panel displays "cooling system normal". If the self-test fails, the ECU illuminates the "cooling system fault" yellow light on the instrument panel and switches to "standby mode", using the radiator 101 inlet temperature to replace the engine coolant temperature to ensure basic functions. Step 2: Heat dissipation demand model prediction. Input the destination, and TBOX outputs road spectrum information to ECU based on the origin and destination. ECU combines the road spectrum information and the common vehicle speed of the road segment during the time period to calculate and predict the cooling model, thereby obtaining the predicted heat dissipation demand, that is, the target wind speed of the fan and the target outlet angle (i.e., the guide angle) of the air multiplier 103. The results are input to the high-pressure centrifugal fan and the airflow guide mechanism 102 to realize the predictive cooling function.

[0049] Step 3: Real-time adjustment. The sensor group monitors ambient temperature, coolant temperature, load, hot spot area and other signals in real time and inputs them to the ECU. The ECU corrects the predicted fan speed and guide angle and whether to perform centralized cooling of hot spots in real time based on the signals.

[0050] Step 4: Feedback adjustment. The sensor group monitors the heat dissipation effect in real time, including signals such as ambient temperature, coolant temperature, load, and hot spots. These signals are then input to the ECU. Step 3 is repeated to achieve closed-loop control of the system.

[0051] The present invention differs from existing technical solutions in the following ways: 1. Different working principles The core difference between the air multiplication technology used in this invention and traditional bladed fans lies in how cooling airflow is generated; its power transmission and airflow generation logic are completely different.

[0052] The principle of traditional bladed fans is "blade cutting + airflow repulsion". When the fan blades rotate, they cut the air and use the blade angle to "push" the air axially toward the heat sink. The airflow is directly generated by the movement of the fan blades and the airflow direction is perpendicular to the plane of fan blade rotation.

[0053] Air speed boosting technology principle: After the high-pressure blower draws in air, it sprays it out at high speed through the narrow slit of the annular air outlet. Using Bernoulli's principle, it drives the still air around the air outlet, forming a multiplication effect of "main airflow + induced airflow" (which can usually amplify the airflow by 10-15 times). The airflow is output axially along the annular channel.

[0054] 2. Different structural layouts Due to their working principles, the two types of fans have significant differences in structural form, installation requirements, and space compatibility, which directly affect the utilization rate of the front space of the chassis (especially to meet the cooling needs of high-horsepower engines).

[0055] Traditional bladed fan structure: It consists of a motor, fan blades, and a fan guard. The whole is disc-shaped and requires a safety space for the fan blades to rotate (to prevent interference with surrounding components). It is rigidly connected to the engine wheel system.

[0056] Air multiplier technology structure: It consists of a high-pressure centrifugal fan, an air multiplier, and an airflow guiding mechanism. It does not require a reserved safety space, is not rigidly connected to the engine, and is powered by electricity.

[0057] 3. Different control strategies Both types of fans aim for "on-demand cooling" in their control logic, but due to differences in airflow generation mechanisms, their control parameters, adjustment precision, and noise control effects vary significantly. Traditional bladed fan control strategies: The core control variable is the fan blade speed. The ECU (or mechanical transmission mechanism) directly changes the airflow by adjusting the fan speed to adapt to different cooling requirements. Mechanical bladed fan control strategies: The speed is tied to the engine speed, passively following it (e.g., a fixed belt drive ratio), and cannot adjust autonomously. Electronically controlled bladed fans: Based on signals such as coolant temperature and intake air temperature, they use a "stepped adjustment" method, resulting in lower adjustment precision.

[0058] Air speed boosting technology control strategy: The centrifugal fan speed and the annular channel guide angle are the two control variables: the fan speed adjusts the amount of compressed air, and the guide angle (which can be dynamically adjusted in some models) optimizes the airflow direction. The dual parameters work together to control the airflow output.

[0059] In summary, the present invention has the following technical effects: 1. This invention replaces the traditional rotating fan blades with an annular nozzle structure of an air multiplier, thereby improving space utilization. The structure is more compact than that of traditional fans, making it suitable for the small and complex space layout of commercial vehicle engine compartments and solving the installation and compatibility problems caused by the excessive size of traditional fans.

[0060] 2. Relying on air multiplier technology, the airflow is accelerated through the annular nozzle to form a uniform airflow field, which improves the uniformity of airflow on the heat dissipation surface and avoids the local overheating problem caused by concentrated airflow in traditional fans, thereby improving heat dissipation efficiency. At the same time, combined with the characteristics of commercial vehicles in high temperature, high cold and high altitude conditions, the air volume is dynamically adjusted through intelligent control strategy to meet the cooling efficiency requirements under different operating conditions.

[0061] 3. The fan provided by this invention is a bladeless fan. Through the smooth air jet design of the annular nozzle, the operating noise is significantly reduced compared with traditional fans. At the same time, it eliminates the vibration transmission problem caused by the rigid connection between the traditional fan and the engine wheel system, improves the NVH (noise, vibration and harshness) performance of the whole vehicle, and reduces the fatigue damage of vibration to the engine and surrounding components.

[0062] 4. With the help of air multiplication technology, the risk of cooling system failure caused by foreign objects (such as stones and branches) hitting the fan blades during vehicle operation is completely avoided. At the same time, there are no issues with easily damaged parts such as fan blade wear and bearing aging, thereby improving reliability and reducing maintenance costs.

[0063] The present invention also provides a commercial vehicle cooling method, wherein the method is applied to the commercial vehicle cooling system described in any of the preceding claims, such as... Figure 4 As shown, the method includes: S401, The controller determines the target wind speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information during the vehicle's driving process; S402, The controller adjusts the wind speed of the fan based on the target wind speed, and controls the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle.

[0064] The commercial vehicle cooling system and method provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A commercial vehicle cooling system, characterized in that, include: Fans, radiators, airflow guiding mechanisms, air multipliers, and controllers; The outlet of the air multiplier is fitted to the front or rear end of the radiator, and the inlet of the air multiplier is aligned with the fan. The airflow guiding mechanism is connected to the outlet of the air multiplier and is used to adjust the outlet angle of the air multiplier. The controller is communicatively connected to the fan and the airflow guiding mechanism, and is used to determine the target wind speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information during vehicle travel, and to adjust the wind speed of the fan based on the target wind speed, and to control the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle.

2. The commercial vehicle cooling system according to claim 1, characterized in that, Also includes: The T-BOX is communicatively connected to the controller and is used to acquire road spectrum information during vehicle operation and send the road spectrum information to the controller.

3. The commercial vehicle cooling system according to claim 1, characterized in that, Rubber cushion assembly and saddle beam; The support beam is fixed to the vehicle frame, the rubber pad assembly is fixed to the support beam, and the air multiplier is fixed to the rubber pad assembly.

4. The commercial vehicle cooling system according to claim 1, characterized in that, The air multiplier has a ring channel structure.

5. The commercial vehicle cooling system according to claim 1, characterized in that, Based on road spectrum information during vehicle travel, the target wind speed of the fan and the target outlet angle of the air multiplier are determined, including: The road spectrum information during vehicle travel and the vehicle speed are input into the trained predictive cooling model to obtain the target wind speed of the fan and the target outlet angle of the air multiplier. The predictive cooling model is obtained by training a neural network model based on preset road spectrum information samples and vehicle speed samples, using the required wind speed of the fan and the required outlet angle of the air multiplier as sample labels; the neural network model is a convolutional neural network, a fully connected neural network, or a generative adversarial network.

6. The commercial vehicle cooling system according to claim 1, characterized in that, Adjusting the wind speed of the fan based on the target wind speed includes: The wind speed of the fan is adjusted based on the target wind speed, and the wind speed difference between the target wind speed and the actual wind speed of the fan is determined. Based on the wind speed difference, the wind speed of the fan is adjusted using a PID algorithm.

7. The commercial vehicle cooling system according to claim 6, characterized in that, Adjusting the wind speed of the fan based on the target wind speed further includes: The system acquires the vehicle's ambient temperature, coolant temperature, and load signal, corrects the target wind speed based on the ambient temperature, coolant temperature, and load signal, and adjusts the fan speed based on the corrected target wind speed.

8. The commercial vehicle cooling system according to any one of claims 1-7, characterized in that, Based on the target outlet angle, the airflow guiding mechanism is controlled to adjust the outlet angle of the air multiplier, including: Based on the target outlet angle, the airflow guiding mechanism is controlled to adjust the outlet angle of the air multiplier, and the angle difference between the target outlet angle and the actual outlet angle of the air multiplier is determined. Based on the angle difference, the outlet angle of the air multiplier is adjusted using a PID control algorithm.

9. The commercial vehicle cooling system according to claim 8, characterized in that, The controller is further configured to adjust the outlet angle of the air multiplier based on the angle difference and in conjunction with a PID control algorithm, and if it is determined that there are still some hot spots in the radiator, readjust the outlet angle of the air multiplier so that the outlet of the air multiplier is aligned with the hot spots.

10. A method for cooling a commercial vehicle, characterized in that, The method is applied to the commercial vehicle cooling system according to any one of claims 1-9, and the method includes: The controller determines the target wind speed of the fan and the target outlet angle of the air multiplier based on the road spectrum information during the vehicle's journey. The controller adjusts the wind speed of the fan based on the target wind speed, and controls the airflow guiding mechanism to adjust the outlet angle of the air multiplier based on the target outlet angle.

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