Automobile radiator performance test system and method

Abstract

The invention provides an automobile radiator performance test system and method, and the method comprises the steps: fixing a to-be-tested radiator in a radiator clamp before testing; the first, second, third and fourth electric control water valve switches are sequentially connected, so that the cooling liquid circulates; when testing starts, the rotating speed of a water pump and the opening degree of a second electric control water valve switch are adjusted, and the resistance of a circulating waterway is adjusted to simulate different testing working conditions; a water inlet temperature value, a water outlet temperature value and a digital display flowmeter flow value are collected; inputting the temperature value of the water outlet and the flow value of the digital display flowmeter into a trained flow data correction model to obtain a corrected flow value; and based on the water inlet temperature value, the water outlet temperature value and the corrected flow value, calculating the heat dissipating capacity of the radiator under different test conditions. According to the invention, by introducing the rotating speed opening combination-waterway resistance relation model and the flow data correction model, the diversity and accuracy of the performance test of the radiator are improved on the basis of ensuring the universality of the test system.

Description

Technical Field

[0001] The present invention relates to the technical field of performance testing, and in particular to a system and method for testing the performance of an automobile radiator. Background Art

[0002] With the continuous development of the automobile industry, the safety, reliability and comfort of automobiles have received more and more attention. As a key part of ensuring a comfortable environment in the car, the performance of the heating radiator, its core component, plays a vital role. In particular, comprehensive and accurate performance testing of the heating radiator before installation is of great significance in reducing the subsequent maintenance costs of the vehicle, ensuring the normal operation of the vehicle and improving the user experience.

[0003] In the traditional automobile production process, the degree of attention paid to the pre-installation testing of automobile parts varies, and there are many deficiencies in the testing of radiators:

[0004] (1) Lack of effective working condition simulation means that the heating radiator can only be tested under a single working condition. It is impossible to simulate the different working conditions corresponding to the various complex road conditions that the car faces in actual driving, such as low-speed conditions when frequently starting and stopping in congested urban roads, and high-speed cruising conditions on highways. This makes the test results unable to accurately reflect the performance of the heating radiator in actual use.

[0005] (2) Due to the limitations of the test system architecture design, the flow meter was placed externally for the convenience of radiator replacement, but the problem of flow measurement accuracy caused by this was ignored. The temperature loss of the coolant flowing through the pipeline caused a deviation in the flow value, which affected the heat dissipation calculation result. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a car radiator performance testing system and method, which improves the diversity of radiator performance testing and the accuracy of heat dissipation calculation by introducing a speed opening combination-water channel resistance relationship model and a flow data correction model into the performance testing system while ensuring the versatility of the testing system.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention provides a vehicle radiator performance testing system, comprising:

[0009] The test circuit includes a thermostatic water tank, a first electrically controlled water valve switch, a water pump, a second electrically controlled water valve switch, a water inlet temperature sensor, a radiator fixture, a water outlet temperature sensor, a third electrically controlled water valve switch, a digital flow meter, and a fourth electrically controlled water valve switch, which are connected in sequence; and is used to provide circulating coolant for the radiator to be tested, and collect the water inlet temperature value, water outlet temperature value, and flow value of the digital flow meter of the radiator to be tested;

[0010] The working condition simulation module includes a water pump and a second electronically controlled water valve switch, and adjusts the circulation water circuit resistance by adjusting the water pump speed and the opening of the second electronically controlled water valve switch to simulate different test working conditions;

[0011] A flow correction module is used to input the water outlet temperature value and the flow value of the digital flow meter into the trained flow data correction model to obtain a corrected flow value;

[0012] The heat dissipation efficiency calculation module is used to calculate the heat dissipation of the radiator under different test conditions based on the water inlet temperature value, the water outlet temperature value and the corrected flow value.

[0013] Preferably, the radiator clamp comprises a pair of adjustable clamps, which are composed of an upper clamp and a lower clamp in an upper and lower direction. The pair of clamps are movably arranged in a fixed frame, and the positions of the clamps along the vertical direction of the fixed frame are adjusted to adapt to radiators of different models and sizes to be tested.

[0014] Preferably, the circulating water circuit resistance is adjusted by adjusting the water pump speed and the opening of the second electronically controlled water valve switch to simulate different test conditions; specifically including:

[0015] According to different test conditions, obtain the water channel resistance value that needs to be simulated;

[0016] The water pump adjustment speed and the second electronically controlled water valve switch adjustment opening are obtained based on the pre-trained speed opening combination-water channel resistance relationship model; the test conditions include low-speed driving conditions and high-speed driving conditions;

[0017] Adjust the water pump speed and the second electric-controlled water valve switch opening, and record the water inlet temperature, water outlet temperature and digital flow meter flow value under the test condition;

[0018] The speed opening combination-water channel resistance relationship model is obtained by training a linear regression model based on historical data.

[0019] Preferably, the training process of the flow data correction model is:

[0020] During non-testing time, disconnect the water inlet or outlet of the radiator from the coolant channel, and insert a water flow sensor at the disconnection point, wherein the two straight ports of the water flow sensor are respectively connected to the radiator and the coolant channel, and the vertical port of the water flow sensor is connected to the flow data acquisition device to directly measure the radiator outlet flow;

[0021] Obtain multiple sets of historical data, each set of data includes the flow value of the digital flow meter, the flow value of the radiator outlet and the temperature at the outlet;

[0022] The flow value of the digital flow meter and the outlet temperature are used as input data, and the radiator outlet flow value is used as output data. A linear regression model is constructed for training until the model loss function is minimized, and a trained flow data correction model is obtained.

[0023] In a second aspect, the present invention provides a method for testing the performance of an automobile radiator, comprising:

[0024] Before the test begins, fix the radiator to be tested in the radiator fixture; turn on the first electric-controlled water valve switch, the second electric-controlled water valve switch, the third electric-controlled water valve switch and the fourth electric-controlled water valve switch in sequence to allow the coolant to circulate in the test system;

[0025] At the beginning of the test, adjust the water pump speed and the opening of the second electronically controlled water valve switch, and adjust the circulating water circuit resistance to simulate different test conditions;

[0026] Collect the water inlet temperature value, the water outlet temperature value and the flow value of the digital flow meter; input the water outlet temperature value and the flow value of the digital flow meter into the trained flow data correction model to obtain the corrected flow value;

[0027] Based on the water inlet temperature value, water outlet temperature value and corrected flow value, calculate the heat dissipation of the radiator under different test conditions.

[0028] Preferably, it also includes, after the test is completed, closing the first, second and third electrically controlled water valve switches, and closing the fourth electrically controlled water valve switch after the coolant is recovered to the constant temperature water tank; when the second and third electrically controlled water valve switches are closed, replacing a different radiator to be tested.

[0029] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method for testing the performance of an automobile radiator described in the second aspect.

[0030] In a fourth aspect, the present invention provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps in the automobile radiator performance testing method described in the second aspect are implemented.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] (1) The present invention aims at the problem of lack of effective working condition simulation at present. By designing a working condition simulation module, the water pump and the second electronically controlled water valve switch are adjusted based on the required simulated water resistance according to the pre-trained model, the working conditions of low-speed and high-speed cruising in urban congestion are restored, and the diversity of radiator performance testing is enhanced. In view of the problem of inaccurate flow measurement of the external flow meter, a flow correction module is set to train the linear regression model based on the historical data obtained during the non-test period, and obtain the corrected flow close to the flow value at the radiator outlet to ensure the accuracy of the heat dissipation calculation.

[0033] (2) The present invention integrates the water pump and the second electronically controlled water valve switch by designing an operating condition simulation module, and with the help of a pre-trained speed opening combination-water resistance relationship model, can accurately simulate various operating conditions according to actual needs. Whether it is a low-speed driving condition in urban congestion or a high-speed cruising condition on a highway, it only needs to obtain the water resistance value required to represent the operating condition, and then the water pump speed and the electronically controlled water valve opening can be quickly adjusted to restore the vehicle operation scene, so that the radiator test is no longer limited to a single condition, and the test range is broadened, providing multi-dimensional data support for comprehensive evaluation of radiator performance.

[0034] (3) The present invention takes into account the impact of coolant temperature loss on flow measurement and sets a flow correction module. During the non-test period, the historical digital flow meter values, outlet temperature and outlet flow are combined to build a linear regression model for training, so that the outlet temperature value and the digital flow meter flow value are input into the trained model to obtain the corrected flow value, effectively compensating for the traditional measurement error, making the heat dissipation calculation based on flow more accurate, and ensuring that the test results truly reflect the actual performance of the radiator.

[0035] (4) The radiator fixture of the present invention is composed of a pair of adjustable clamps, the upper clamp and the lower clamp are opposite to each other and are movably arranged in a fixed frame, and can be flexibly adjusted in the vertical direction. When facing radiators of different models and sizes to be tested, there is no need for a complicated clamp replacement process. The radiator can be stably fixed by simply adjusting the distance between the clamps. This design simplifies test preparation and is suitable for a variety of products, whether compact or large radiators. It can reduce test costs, improve test efficiency, and enhance the compatibility of the entire test system with different radiators.

[0036] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their description are used to explain the present invention but do not constitute a limitation of the present invention.

[0038] Figure 1 A schematic diagram of a vehicle radiator performance testing system provided by an embodiment of the present invention;

[0039] Figure 2 A main flow chart of a method for testing the performance of an automobile radiator provided by an embodiment of the present invention;

[0040] Among them, 1-constant temperature water tank; 2-first electronically controlled water valve switch; 3-water pump; 4-second electronically controlled water valve switch; 5-water inlet temperature sensor; 6-radiator clamp; 7-water outlet temperature sensor; 8-third electronically controlled water valve switch; 9-digital flow meter; 10-fourth electronically controlled water valve switch. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] Embodiment 1

[0043] like Figure 1 As shown, this embodiment discloses a vehicle radiator performance testing system, comprising:

[0044] The test circuit includes a constant temperature water tank 1, a first electrically controlled water valve switch 2, a water pump 3, a second electrically controlled water valve switch 4, a water inlet temperature sensor 5, a radiator fixture 6, a water outlet temperature sensor 7, a third electrically controlled water valve switch 8, a digital flow meter 9, and a fourth electrically controlled water valve switch 10, which are connected in sequence. The test circuit provides circulating coolant for the performance test of the radiator to be tested.

[0045] Among them, the radiator clamp 6 includes a pair of adjustable clamps, which are composed of an upper clamp and a lower clamp in an upper and lower direction. The pair of clamps are movably arranged in a fixed frame, and the position of the clamps along the vertical direction of the fixed frame is adjusted to adapt to radiators of different models and sizes to be tested.

[0046] As an embodiment, the radiator fixture 6 further includes a standardized interface for connecting radiators of different models to the coolant pipeline of the test circuit.

[0047] The water inlet temperature sensor 5 in the test loop is used to collect the inlet temperature of the radiator to be tested, the water outlet temperature sensor 7 is used to collect the outlet temperature of the radiator to be tested, and the digital flow meter 9 is used to measure the water flow through the radiator.

[0048] Before the test begins, fix the radiator to be tested in the radiator fixture; turn on the first electric water valve switch, the second electric water valve switch, the third electric water valve switch and the fourth electric water valve switch in sequence to allow the coolant to circulate in the test system, and check whether the circuit has any leakage or improper connection.

[0049] The system also includes a working condition simulation module, including a water pump and a second electrically controlled water valve switch, which is used to simulate different test working conditions by adjusting the water pump speed and the opening of the second electrically controlled water valve switch to adjust the circulation water circuit resistance.

[0050] In the actual operation of the car, the working conditions are complex and changeable. For example, in daily driving, traffic jams are often encountered, and the vehicle is in a low-speed operation period. Under this condition, the engine runs relatively slowly, the flow rate of the coolant is also low, and the water resistance of the radiator will present a specific state. On the contrary, when the vehicle is driving on the highway, it enters the high-speed driving period, the engine runs at high speed, and the coolant needs to circulate quickly to maintain the normal temperature of the engine. At this time, the water resistance of the radiator is completely different from that when running at low speed.

[0051] In addition, in different seasons or special weather conditions, vehicles will experience high or low temperature periods. In high temperature environments, the engine is more likely to generate heat, and the coolant needs to circulate more efficiently to dissipate heat, which causes the radiator's water resistance to change; in low temperature environments, although the engine generates relatively less heat, the coolant characteristics may change, which also causes differences in the radiator's water resistance.

[0052] In view of this, in order to simulate different working conditions and expand the diversity of radiator performance testing, this embodiment characterizes different working conditions by adjusting the water channel resistance in the test loop.

[0053] Specifically, in order to simulate different water channel resistances, a speed opening combination-water channel resistance relationship model is constructed to establish a corresponding relationship between the combination of the water pump speed and the second electronically controlled water valve switch opening and the water channel resistance.

[0054] Based on historical data, a linear regression model is used to build a speed opening combination-water channel resistance relationship model. According to historical data, the corresponding relationship between different test conditions and water channel resistance is obtained, and the water channel resistance values ​​corresponding to different test conditions are obtained; according to the speed opening combination-water channel resistance relationship model, the water pump adjustment speed and the second electric control water valve switch adjustment opening are obtained, and the open test circuit is adjusted to simulate the corresponding test condition, and the water inlet temperature value, water outlet temperature value and digital flow meter flow value under the test condition are recorded.

[0055] Among them, the corresponding relationship between different test conditions and water channel resistance is obtained based on historical data. Specifically, first, data of various test conditions are collected from historical data. These test conditions include different water pump operating conditions, electric control water valve opening conditions and other related parameters. At the same time, the corresponding water channel resistance measurement values ​​under these test conditions are collected. For example, the water channel resistance data actually measured under different combinations of water pump speeds and second electric control water valve switch openings are recorded.

[0056] The collected test conditions are classified. The classification can be based on factors such as different ranges of water pump speeds and different degrees of electronically controlled water valve openings. As an implementation method, the water pump speed can be divided into several intervals such as low speed, medium speed, and high speed, and the electronically controlled water valve opening can be divided into categories such as small opening, medium opening, and large opening. Then, the corresponding water channel resistance values ​​under each category are sorted out.

[0057] By analyzing the classified data, a corresponding relationship between different test conditions and water channel resistance is established. As an implementation method, it is found that when the water pump is running at medium speed and the electric control water valve is at a medium opening, the corresponding water channel resistance value is within a specific range. This corresponding relationship can be represented by a table, function or other data structure.

[0058] For the linear regression model training process, specifically: the speed opening combination is used as the independent variable (feature), and the water channel resistance is used as the dependent variable (target). The speed opening combination data and the corresponding water channel resistance data obtained from the historical data are sorted into a format suitable for linear regression model training. Assuming that the water pump speed has n different values ​​and the electric control water valve opening has m different values, the water channel resistance values ​​corresponding to these combinations are sorted into a data set {(x 1 ,y 1 ),(x 2 ,y 2 ),…,(x N ,y N )}, where x i is the speed opening combination, y i is the corresponding water channel resistance value.

[0059] Select the linear regression model:

[0060] y=β 0 +β 1 x 1 +β 2 x 2 +…β k x k +ε

[0061] Among them, y is the corresponding predicted value of waterway resistance, x iare the characteristics of the speed opening combination (water pump speed and electronically controlled water valve opening), β i are the coefficients of the model and ε is the error term.

[0062] Initialize model coefficients β i , which can usually be initialized randomly or to 0.

[0063] Choose a suitable loss function to measure the difference between the model's predicted value and the true value. For linear regression, the commonly used loss function is the mean square error (MSE), which is:

[0064]

[0065] Among them, y i is the actual water resistance value. is the waterway resistance value predicted by the model.

[0066] Use an optimization algorithm (such as gradient descent) to minimize the loss function and update the model coefficients β i .

[0067] In each iteration, the predicted value is calculated based on the current model coefficients Then calculate the loss function for each coefficient β i The gradient of , updates the coefficient according to the rule of gradient descent:

[0068]

[0069] Among them, α is the learning rate, which determines the step size of the coefficient update at each iteration.

[0070] This process is repeated until the loss function converges or the preset number of iterations is reached to obtain a trained linear regression model.

[0071] In this embodiment, by constructing a speed opening combination-water resistance relationship model to simulate different working conditions, it is possible to accurately simulate the complex working conditions in the actual operation of the car, such as low-speed traffic jams, high-speed driving, and working conditions under different temperature environments, so that the radiator performance test is more in line with actual use. Secondly, based on historical data and linear regression models, the water pump speed and the opening of the electronically controlled water valve can be scientifically determined, which improves the accuracy of the simulation. Data such as temperature values ​​and flow values ​​under different working conditions are recorded for subsequent calculation of heat dissipation under different working conditions.

[0072] The system also includes a flow correction module, which is used to input the water outlet temperature value and the flow value of the digital flow meter into the trained flow data correction model to obtain a corrected flow value.

[0073] The calculation of heat dissipation is the core of the radiator performance test, which can be calculated using the formula Q = mcΔT, where m is mass, c is specific heat capacity, ΔT is temperature change, and m can be characterized by water flow, coolant density, and test time. Therefore, obtaining an accurate flow value is the key to the heat dissipation performance test.

[0074] In the traditional radiator performance test system architecture design, system versatility is an important consideration. In order to easily replace radiators of different types and specifications, the flow meter is usually placed outside the radiator.

[0075] However, due to the certain physical distance between the radiator and the flow meter, when the coolant flows out of the radiator and is transported to the flow meter through the connecting pipeline, it will inevitably exchange heat with the surrounding environment, resulting in temperature loss.

[0076] This temperature change will directly affect the physical properties of the coolant, such as viscosity, which will in turn cause the flow state of the coolant in the pipeline to change, so that the data finally measured by the flow meter cannot accurately reflect the actual water flow situation inside the radiator, resulting in obvious deviations in the flow value, thereby reducing the effectiveness of the entire test system in evaluating radiator performance to a certain extent.

[0077] In order to overcome this problem, the present embodiment provides a flow data correction module, which is used to obtain the flow value representing the radiator outlet according to the flow meter flow and the radiator outlet temperature. Specifically, the training process of the flow data correction module is as follows:

[0078] During non-testing time, disconnect the water inlet or outlet of the radiator from the coolant channel, and insert a water flow sensor at the disconnection point, wherein the two straight ports of the water flow sensor are respectively connected to the radiator and the coolant channel, and the vertical port of the water flow sensor is connected to the flow data acquisition device to directly measure the radiator outlet flow;

[0079] Obtain multiple sets of historical data, each set of data includes the flow value of the digital flow meter, the flow value of the radiator outlet and the temperature at the outlet;

[0080] The flow value of the digital flow meter and the outlet temperature are used as input data, and the radiator outlet flow value is used as output data. A linear regression model is constructed for training until the model loss function is minimized, and a trained flow data correction model is obtained.

[0081] It should be understood that the training process of the linear regression model is achievable by those skilled in the art.

[0082] In actual tests, by inputting the real-time collected water outlet temperature value and the digital flow meter flow value into the trained flow data correction model, the water flow value representing the water flow through the radiator, that is, the corrected flow value, can be obtained.

[0083] The flow data correction model set in this embodiment, on the one hand, continues the traditional practice of placing the flow meter externally, which facilitates the replacement of radiators of different types and specifications, fully meets the diverse testing needs, ensures the versatility of the system, and provides a basis for efficiently conducting multi-model radiator tests. On the other hand, historical data is used to accurately collect the radiator outlet flow as standard data, and a linear regression model training is constructed by combining the digital flow meter value and the outlet temperature. In this way, in actual tests, after real-time data is input into the correction model, the corrected flow value can be accurately output, effectively compensating for the flow deviation caused by temperature loss, effectively improving the accuracy of flow measurement, and providing support for the accurate evaluation of radiator performance.

[0084] After obtaining the accurate flow value under different working conditions, the system also includes a heat dissipation efficiency calculation module, which is used to calculate the heat dissipation of the radiator under different test conditions based on the water inlet temperature value, the water outlet temperature value and the corrected flow value. That is, the coolant mass is obtained based on the corrected flow value, the coolant density and the test time, and is substituted into Q=mcΔT to solve the heat dissipation.

[0085] As an implementation method, it also includes closing the first, second and third electrically controlled water valve switches after the test is completed, and closing the fourth electrically controlled water valve switch after the coolant is recovered to the constant temperature water tank; when the second and third electrically controlled water valve switches are closed, replacing a different radiator to be tested and re-testing the radiator performance.

[0086] This specific embodiment improves the diversity and accuracy of radiator performance testing by introducing a speed opening combination-water channel resistance relationship model and a flow data correction model while ensuring the versatility of the test system. It can help automobile manufacturers to more accurately grasp the radiator performance before installation, thereby making optimizations in the design and production links, allowing the radiator to better adapt to different working conditions, and to produce more reliable quality vehicles to meet market demand.

[0087] Embodiment 2

[0088] like Figure 2 As shown, this embodiment provides a method for testing the performance of an automobile radiator, comprising the following steps:

[0089] S1: Before the test begins, fix the radiator to be tested in the radiator fixture; turn on the first electric control water valve switch, the second electric control water valve switch, the third electric control water valve switch and the fourth electric control water valve switch in sequence to circulate the coolant in the test system;

[0090] S2: At the beginning of the test, adjust the water pump speed and the opening of the second electronically controlled water valve switch, and adjust the circulating water circuit resistance to simulate different test conditions;

[0091] S3: Collect the water inlet temperature value, the water outlet temperature value and the flow value of the digital flow meter; input the water outlet temperature value and the flow value of the digital flow meter into the trained flow data correction model to obtain the corrected flow value;

[0092] S4: Based on the water inlet temperature value, the water outlet temperature value and the corrected flow value, calculate the heat dissipation of the radiator under different test conditions.

[0093] By using the radiator fixture and connecting a series of electronically controlled water valve switches, various radiators can be easily installed to ensure the versatility of the test system and lay the foundation for subsequent test processes. Secondly, by cleverly adjusting the water pump speed and the opening of the electronically controlled water valve, various complex working conditions such as low-speed and high-speed cruising in urban congestion are simulated, breaking the constraints of traditional single-condition testing, so that the test results can accurately reflect the actual performance of the radiator. In addition, relevant data is collected and input into the flow data correction model to effectively correct the flow deviation caused by the coolant temperature loss, and then the heat dissipation is calculated based on accurate data, which effectively solves the problem of traditional testing affecting the heat dissipation calculation due to inaccurate flow, and improves the accuracy of the test.

[0094] Embodiment 3

[0095] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the method for testing the performance of an automobile radiator as described in the above-mentioned embodiment 2 are implemented.

[0096] Embodiment 4

[0097] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the automobile radiator performance testing method described in the above-mentioned embodiment 2 are implemented.

[0098] The steps or modules involved in the above embodiments 2 to 4 correspond to those in embodiment 1. For the specific implementation, please refer to the relevant description of embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood to include any medium that can store, encode or carry an instruction set for execution by a processor and enable the processor to execute any method in the present invention.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A car radiator performance test system, characterized in that: include: The test circuit includes a thermostatic water tank, a first electrically controlled water valve switch, a water pump, a second electrically controlled water valve switch, a water inlet temperature sensor, a radiator fixture, a water outlet temperature sensor, a third electrically controlled water valve switch, a digital flow meter, and a fourth electrically controlled water valve switch, which are connected in sequence; and is used to provide circulating coolant for the radiator to be tested, and collect the water inlet temperature value, water outlet temperature value, and flow value of the digital flow meter of the radiator to be tested; The working condition simulation module includes a water pump and a second electronically controlled water valve switch, and adjusts the circulation water circuit resistance by adjusting the water pump speed and the opening of the second electronically controlled water valve switch to simulate different test working conditions; A flow correction module is used to input the outlet temperature value and the flow value of the digital flow meter into the trained flow data correction model to obtain a corrected flow value; The heat dissipation efficiency calculation module is used to calculate the heat dissipation of the radiator under different test conditions based on the water inlet temperature value, the water outlet temperature value and the corrected flow value.

2. The automobile radiator performance testing system according to claim 1, characterized in that: The radiator fixture comprises a pair of adjustable clamping plates, which are composed of an upper clamping plate and a lower clamping plate arranged in an upper and lower direction. The pair of clamping plates are movably arranged in a fixed frame, and the positions of the clamping plates along the vertical direction of the fixed frame are adjusted to adapt to radiators to be tested of different models and sizes.

3. The automobile radiator performance testing system according to claim 1, characterized in that: The method adjusts the water pump speed and the opening of the second electronically controlled water valve switch to adjust the circulating water circuit resistance to simulate different test conditions; specifically includes: According to different test conditions, obtain the water channel resistance value that needs to be simulated; The water pump adjustment speed and the second electronically controlled water valve switch adjustment opening are obtained based on the pre-trained speed opening combination-water channel resistance relationship model; the test conditions include low-speed driving conditions and high-speed driving conditions; Adjust the water pump speed and the second electric-controlled water valve switch opening, and record the water inlet temperature, water outlet temperature and digital flow meter flow value under the test condition; The speed opening combination-water channel resistance relationship model is obtained by training a linear regression model based on historical data.

4. The automobile radiator performance testing system according to claim 1, characterized in that: The training process of the flow data correction model is as follows: During non-testing time, disconnect the water inlet or outlet of the radiator from the coolant channel, and insert a water flow sensor at the disconnection point, wherein the two straight ports of the water flow sensor are respectively connected to the radiator and the coolant channel, and the vertical port of the water flow sensor is connected to the flow data acquisition device to directly measure the radiator outlet flow; Obtain multiple sets of historical data, each set of data includes the flow value of the digital flow meter, the flow value of the radiator outlet and the temperature at the outlet; The flow value of the digital flow meter and the outlet temperature are used as input data, and the radiator outlet flow value is used as output data. A linear regression model is constructed for training until the model loss function is minimized, and a trained flow data correction model is obtained.

5. A method for testing the performance of an automobile radiator, based on the automobile radiator performance testing system according to claim 1, characterized in that: include: Before the test begins, fix the radiator to be tested in the radiator fixture; Turning on the first electrically controlled water valve switch, the second electrically controlled water valve switch, the third electrically controlled water valve switch and the fourth electrically controlled water valve switch in sequence to allow the coolant to circulate in the test system; At the beginning of the test, adjust the water pump speed and the opening of the second electronically controlled water valve switch, and adjust the circulating water circuit resistance to simulate different test conditions; Collect water inlet temperature value, water outlet temperature value and digital flow meter flow value; The outlet temperature value and the flow value of the digital flow meter are input into the trained flow data correction model to obtain the corrected flow value; Based on the water inlet temperature value, water outlet temperature value and corrected flow value, calculate the heat dissipation of the radiator under different test conditions.

6. A method for testing the performance of an automobile radiator as claimed in claim 1, characterized in that: Adjust the water pump speed and the opening of the second electronically controlled water valve switch, and adjust the circulating water resistance to simulate different test conditions; Specifically include: According to different test conditions, obtain the water channel resistance value that needs to be simulated; The water pump adjustment speed and the second electronically controlled water valve switch adjustment opening are obtained based on the pre-trained speed opening combination-water channel resistance relationship model; the test conditions include low-speed driving conditions and high-speed driving conditions; Adjust the water pump speed and the second electric-controlled water valve switch opening, and record the water inlet temperature, water outlet temperature and digital flow meter flow value under the test condition; The speed opening combination-water channel resistance relationship model is obtained by training a linear regression model based on historical data.

7. A method for testing the performance of an automobile radiator as claimed in claim 1, characterized in that: The training process of the flow data correction model is as follows: During non-testing time, disconnect the water inlet or outlet of the radiator from the coolant channel, and insert a water flow sensor at the disconnection point, wherein the two straight ports of the water flow sensor are respectively connected to the radiator and the coolant channel, and the vertical port of the water flow sensor is connected to the flow data acquisition device to directly measure the radiator outlet flow; Obtain multiple sets of historical data, each set of data includes the flow value of the digital flow meter, the flow value of the radiator outlet and the temperature at the outlet; The flow value of the digital flow meter and the outlet temperature are used as input data, and the radiator outlet flow value is used as output data. A linear regression model is constructed for training until the model loss function is minimized, and a trained flow data correction model is obtained.

8. A method for testing the performance of an automobile radiator as claimed in claim 1, characterized in that: It also includes, after the test is completed, closing the first, second and third electrically controlled water valve switches, and closing the fourth electrically controlled water valve switch after the coolant is recovered to the constant temperature water tank; while the second and third electrically controlled water valve switches are closed, replacing a different radiator to be tested.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in a method for testing performance of an automobile radiator as described in any one of claims 5-8 are implemented.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps in the automobile radiator performance testing method as described in any one of claims 5-8 are implemented.

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