A vehicle thermal management control method, system, device, and medium

Abstract

The application discloses a vehicle thermal management control method, system, device and medium, which obtains vehicle catalyst inlet temperature information, throttle opening degree information and vehicle speed information, obtains the adjustment amount of the corresponding active air intake grille opening degree according to the size of the vehicle catalyst inlet temperature information, the throttle opening degree information and the vehicle speed information, and converts the adjustment amount of the active air intake grille opening degree into a control signal to control the rotation of the motor, so that the control of the active air intake grille opening degree is realized. Through the method, the active air intake grille can be controlled to participate in the whole vehicle emission thermal management, the automobile heat dissipation efficiency can be improved, the participation of the engine emission thermal management can be reduced, the heat preservation package of the engine exhaust pipe can be reduced, and the fuel consumption can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and in particular to a vehicle thermal management control method, system, equipment and medium. Background Art

[0002] To achieve ultra-low engine emissions, manufacturers are implementing more sophisticated control over catalysts, with thermal management being a key element, as emissions react most efficiently on the catalyst above a specific temperature. When a vehicle is operating at low speed and low load, the exhaust temperature is low. The fresh air introduced for heat dissipation cools the engine's exhaust pipe and post-processing. Excessively low temperatures reduce catalytic efficiency, negatively impacting emissions. Therefore, existing technologies typically use a thermodynamic device and air cooler on the exhaust pipe to control the catalyst temperature, or install thermal insulation in the exhaust line. However, these heat dissipation methods are complex to install, have low heat dissipation efficiency, and increase fuel consumption by increasing diesel post-injection. Summary of the Invention

[0003] The present invention provides a vehicle thermal management control method, system, device and medium, which improves the vehicle's heat dissipation efficiency and reduces the involvement of engine exhaust thermal management by adjusting the opening of the active air intake grille using vehicle condition information.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a vehicle thermal management control method, comprising:

[0005] Obtain vehicle status information, including catalyst inlet temperature information, throttle opening information, and vehicle speed information;

[0006] The vehicle condition information is judged according to the preset judgment conditions to obtain the adjustment amount of the active air intake grille opening;

[0007] The adjustment amount of the active air intake grille opening is converted into a control signal, and the air intake grille opening is controlled according to the control signal.

[0008] By obtaining the vehicle's catalyst inlet temperature information, throttle opening information, and vehicle speed information, the corresponding active air intake grille opening adjustment amount is obtained according to the size of the vehicle's catalyst inlet temperature information, throttle opening information, and vehicle speed information, and then the active air intake grille opening adjustment amount is converted into a control signal to control the rotation of the motor to achieve control of the active air intake grille opening. This method can intervene in the vehicle's exhaust thermal management by controlling the active air intake grille, thereby improving the vehicle's heat dissipation efficiency, reducing the participation of engine exhaust thermal management, reducing the insulation wrapping of the engine exhaust pipe, and reducing fuel consumption.

[0009] As a preferred solution, the vehicle status information is obtained as follows:

[0010] Acquiring catalyst inlet temperature information according to a preset temperature sensor unit;

[0011] Acquiring throttle opening information according to a preset throttle opening sensor unit;

[0012] Obtain vehicle speed information based on the preset vehicle speed sensor.

[0013] As a preferred solution, the vehicle status information is judged according to the preset judgment conditions to obtain the adjustment amount of the active air intake grille opening, specifically:

[0014] Determining whether the throttle opening information is higher than a preset opening threshold, determining whether the catalyst inlet temperature information is higher than a preset temperature threshold, and whether the vehicle speed information is lower than a preset vehicle speed threshold, and obtaining a determination result;

[0015] The corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result.

[0016] As a preferred solution, the corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result, specifically:

[0017] When the throttle opening information is lower than a preset opening threshold, and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a first adjustment value;

[0018] When the throttle opening information is higher than a preset opening threshold and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a second adjustment value;

[0019] When the throttle opening information is higher than a preset opening threshold, and the catalyst inlet temperature information is higher than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a third adjustment value;

[0020] When the throttle opening information is higher than a preset opening threshold, the catalyst inlet temperature information is higher than a preset temperature threshold, and the vehicle speed information is lower than the preset vehicle speed information, the adjustment amount of the active air intake grille opening is set to a fourth adjustment value.

[0021] As a preferred solution, the first adjustment value is smaller than the second adjustment value;

[0022] The second adjustment value is less than the third adjustment value;

[0023] The third adjustment value is smaller than the fourth adjustment value.

[0024] As a preferred solution, the opening of the air intake grille is controlled according to the control signal, specifically:

[0025] According to the control signal, the PWM signal is controlled to control the rotation speed of the motor to control the opening of the active air intake grille.

[0026] As a preferred solution, in order to solve the same technical problem, an embodiment of the present invention further provides a vehicle thermal management control system, comprising:

[0027] An information acquisition module is used to acquire vehicle status information, including catalyst inlet temperature information, throttle opening information, and vehicle speed information;

[0028] An electronic control module, configured to calculate the opening of the active air intake grille according to vehicle status information using a preset strategy calculation method;

[0029] The vehicle control module is used to convert the size of the active air intake grille opening into a control signal and control the air intake grille opening according to the control signal.

[0030] As a preferred solution, the information acquisition module includes: a temperature sensor unit, a throttle opening sensor, and a vehicle speed sensor;

[0031] Wherein, the temperature sensor unit is used to obtain catalyst inlet temperature information;

[0032] The throttle opening sensor unit is used to obtain throttle opening information;

[0033] The vehicle speed sensor is used to obtain vehicle speed information.

[0034] As a preferred solution, in order to solve the same technical problem, an embodiment of the present invention further provides a terminal device, comprising: a processor and a memory,

[0035] A computer program is stored in the memory, and the computer program is configured to be executed by the processor. When the processor executes the computer program, the vehicle thermal management control method as described in the embodiment of the present invention is implemented.

[0036] As a preferred solution, in order to solve the same technical problem, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. The computer program is executed by a processor to implement the vehicle thermal management control method as described in the embodiment of the present invention.

[0037] By obtaining the vehicle's catalyst inlet temperature information, throttle opening information, and vehicle speed information, the corresponding active air intake grille opening adjustment amount is obtained according to the size of the vehicle's catalyst inlet temperature information, throttle opening information, and vehicle speed information, and then the active air intake grille opening adjustment amount is converted into a control signal to control the rotation of the motor to achieve control of the active air intake grille opening. This method can intervene in the vehicle's exhaust thermal management by controlling the active air intake grille, thereby improving the vehicle's heat dissipation efficiency, reducing the participation of engine exhaust thermal management, reducing the insulation wrapping of the engine exhaust pipe, and reducing fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Fig. 1 is a flowchart of an embodiment of a vehicle thermal management control method provided by the present application;

[0039] Figure 2 Fig. 2 is a structural diagram of an embodiment of a vehicle thermal management control method provided by the present application.

[0040] Figure 3 Fig. 3 is a system structural diagram of another embodiment of a vehicle thermal management control method provided by the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0042] Embodiment one

[0043] Please refer to Figure 1 A vehicle thermal management control method provided by the embodiment of the present application includes steps 101 to 103, and each step is specifically as follows:

[0044] Step 101: obtaining vehicle condition information, the vehicle condition information including catalyst inlet temperature information, throttle opening degree information, and vehicle speed information;

[0045] In this embodiment, the catalyst inlet temperature information is obtained by a temperature sensor, the throttle opening degree information is obtained by a throttle opening degree sensor unit, and the vehicle speed information is obtained by a vehicle speed sensor.

[0046] Step 102: judging the vehicle condition information according to a preset judgment condition to obtain an adjustment amount of the active air intake grille opening degree;

[0047] In this embodiment, as shown in Figure 2 , the inlet temperature of the catalyst, the throttle opening degree, and the vehicle speed information are sent to the vehicle controller using an electronic controller, and the vehicle controller controls the opening degree of the active air intake grille to control the heat dissipation amount of the aftertreatment to maintain the aftertreatment temperature.

[0048] As an example of this embodiment, when the throttle opening degree is lower than 20% and the catalyst inlet temperature is lower than 420℃, the air intake grille is closed to reduce the heat dissipation of the engine exhaust pipe and the aftertreatment;

[0049] When the throttle opening is greater than 20% and the catalyst inlet temperature is lower than 420°C, the air intake grille opening is 10% to reduce heat dissipation in the engine exhaust pipe and aftertreatment;

[0050] When the throttle opening is greater than 20% and the catalyst inlet temperature is higher than 420°C, the air intake grille opens to 50% to increase heat dissipation in the engine compartment.

[0051] When the throttle opening is greater than 20%, the catalyst inlet temperature is higher than 420°C, and the vehicle speed is less than 40km / h, the air intake grille opening is controlled to 100% to fully dissipate heat for the engine.

[0052] Optionally, the vehicle status information is judged according to a preset judgment condition to obtain the adjustment amount of the active air intake grille opening, specifically:

[0053] Determining whether the throttle opening information is higher than a preset opening threshold, determining whether the catalyst inlet temperature information is higher than a preset temperature threshold, and whether the vehicle speed information is lower than a preset vehicle speed threshold, and obtaining a determination result;

[0054] The corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result.

[0055] Optionally, the corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result, specifically:

[0056] When the throttle opening information is lower than a preset opening threshold, and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a first adjustment value;

[0057] When the throttle opening information is higher than a preset opening threshold and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a second adjustment value;

[0058] When the throttle opening information is higher than a preset opening threshold, and the catalyst inlet temperature information is higher than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a third adjustment value;

[0059] When the throttle opening information is higher than a preset opening threshold, the catalyst inlet temperature information is higher than a preset temperature threshold, and the vehicle speed information is lower than the preset vehicle speed information, the adjustment amount of the active air intake grille opening is set to a fourth adjustment value.

[0060] Optionally, the opening of the air intake grille is controlled according to the control signal, specifically:

[0061] According to the control signal, the PWM signal is controlled to control the rotation speed of the motor to control the opening of the active air intake grille.

[0062] In this embodiment, the electronic control unit and the vehicle controller communicate through the CAN network, and the VCU controls the rotation of the motor by sending PWM signals to achieve active control of the air intake grille opening.

[0063] In this embodiment, the catalyst inlet temperature information is obtained by the temperature sensor, the throttle opening sensor unit obtains the throttle opening information, and the vehicle speed sensor obtains the vehicle speed information. Then, the electronic controller is used to send the catalyst inlet temperature, throttle opening, and vehicle speed information to the vehicle controller. The vehicle controller uses strategy calculation to determine whether the throttle opening information is higher than a preset opening threshold, whether the catalyst inlet temperature information is higher than a preset temperature threshold, and whether the vehicle speed information is less than the preset speed threshold, to obtain a judgment result. Then, based on the judgment result, the corresponding adjustment amount of the active air intake grille opening is obtained. By controlling the opening of the active air intake grille, the heat dissipation of the post-processing is controlled to maintain the post-processing temperature.

[0064] Example 2

[0065] Accordingly, see Figure 3 , Figure 3 This is a schematic diagram of the vehicle thermal management control system provided by the present invention. As shown in the figure, the vehicle thermal management control system includes: an information acquisition module 301, an electronic control module 302 and a vehicle control module 303, wherein the specific units of each module are as follows:

[0066] The information acquisition module 301 is used to acquire vehicle status information, including catalyst inlet temperature information, throttle opening information, and vehicle speed information;

[0067] The electronic control module 302 is used to calculate the size of the active air intake grille opening according to the vehicle status information using a preset strategy calculation method;

[0068] The vehicle control module 303 is used to convert the size of the active air intake grille opening into a control signal and control the air intake grille opening according to the control signal.

[0069] In this embodiment, the information acquisition module 301 includes a temperature sensor unit 3011, a throttle opening sensor 3012 and a vehicle speed sensor 3013;

[0070] The temperature sensor unit 3011 is used to obtain catalyst inlet temperature information;

[0071] The throttle opening sensor unit 3012 is used to obtain throttle opening information;

[0072] The vehicle speed sensor 3013 is used to obtain vehicle speed information.

[0073] For more detailed working principles and processes of this embodiment, please refer to, but not limited to, the relevant description of Embodiment 1.

[0074] The vehicle thermal management control system is used to perform a vehicle thermal management control method, which obtains the vehicle catalyst inlet temperature information, throttle opening information, and vehicle speed information, and obtains the corresponding active air intake grille opening adjustment amount according to the size of the vehicle catalyst inlet temperature information, throttle opening information, and vehicle speed information. The adjustment amount of the active air intake grille opening is then converted into a control signal to control the rotation of the motor to achieve control of the active air intake grille opening. This method can intervene in the vehicle exhaust thermal management by controlling the active air intake grille, thereby improving the vehicle's heat dissipation efficiency, reducing the participation of engine exhaust thermal management, reducing the insulation wrapping of the engine exhaust pipe, and reducing fuel consumption.

[0075] Example 3

[0076] Accordingly, the vehicle thermal management control terminal device provided by the present invention, the target detection terminal device, includes: a processor and a memory,

[0077] A computer program is stored in the memory, and the computer program is configured to be executed by a processor, and the processor performs operations corresponding to the vehicle thermal management control method shown in the first embodiment of the present application.

[0078] Example 4

[0079] Accordingly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the vehicle thermal management control method shown in the first embodiment of the present application.

[0080] In this embodiment, the present application provides a computer-readable storage medium, which stores a computer program. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding content of the aforementioned method embodiment.

[0081] Compared with the existing technology, the vehicle thermal management control method provided by the present invention obtains the vehicle catalyst inlet temperature information, throttle opening information, and vehicle speed information, and obtains the corresponding active air intake grille opening adjustment amount according to the size of the vehicle catalyst inlet temperature information, throttle opening information, and vehicle speed information. The adjustment amount of the active air intake grille opening is then converted into a control signal to control the rotation of the motor to achieve the control of the active air intake grille opening. Through this method, the active air intake grille can be controlled to intervene in the vehicle exhaust thermal management, which can improve the vehicle's heat dissipation efficiency, reduce the participation of engine exhaust thermal management, reduce the insulation wrapping of the engine exhaust pipe, and reduce fuel consumption.

[0082] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle thermal management control method, characterized in that: include: Acquiring vehicle status information, wherein the vehicle status information includes catalyst inlet temperature information, throttle opening information, and vehicle speed information; The vehicle condition information is judged according to a preset judgment condition to obtain an adjustment amount of the active air intake grille opening; converting the adjustment amount of the active air intake grille opening into a control signal, and controlling the active air intake grille opening according to the control signal; The vehicle condition information is judged according to a preset judgment condition to obtain the adjustment amount of the active air intake grille opening, specifically: Determining whether the throttle opening information is higher than a preset opening threshold, determining whether the catalyst inlet temperature information is higher than a preset temperature threshold, and whether the vehicle speed information is lower than a preset vehicle speed threshold, and obtaining a determination result; Obtaining a corresponding adjustment amount of the active air intake grille opening according to the judgment result; The corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result, specifically: When the throttle opening information is lower than a preset opening threshold, and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a first adjustment value; When the throttle opening information is higher than a preset opening threshold and the catalyst inlet temperature information is lower than a preset temperature threshold, setting the adjustment amount of the active air intake grille opening to a second adjustment value; When the throttle opening information is higher than a preset opening threshold, and the catalyst inlet temperature information is higher than a preset temperature threshold, setting the adjustment amount of the active air intake grille opening to a third adjustment value; When the throttle opening information is higher than a preset opening threshold, the catalyst inlet temperature information is higher than a preset temperature threshold, and the vehicle speed information is lower than the preset vehicle speed information, the adjustment amount of the active air intake grille opening is set to a fourth adjustment value, wherein the first adjustment value is lower than the second adjustment value, the second adjustment value is lower than the third adjustment value, and the third adjustment value is lower than the fourth adjustment value.

2. The vehicle thermal management control method according to claim 1, characterized in that: The obtaining of vehicle status information is specifically as follows: Acquiring catalyst inlet temperature information according to a preset temperature sensor unit; Acquiring throttle opening information according to a preset throttle opening sensor unit; Obtain vehicle speed information based on the preset vehicle speed sensor.

3. The vehicle thermal management control method according to claim 1, wherein: The controlling of the opening of the active air intake grille according to the control signal is specifically as follows: According to the control signal, the PWM signal is controlled to control the rotation speed of the motor to control the opening of the active air intake grille.

4. A vehicle thermal management control system, characterized in that: include: An information acquisition module is used to acquire vehicle status information, wherein the vehicle status information includes catalyst inlet temperature information, throttle opening information, and vehicle speed information; An electronic control module, configured to calculate the opening of the active air intake grille according to the vehicle status information using a preset strategy calculation method; A vehicle control module, configured to convert the size of the opening of the active air intake grille into a control signal, and control the opening of the active air intake grille according to the control signal; The vehicle condition information is judged according to a preset judgment condition to obtain the adjustment amount of the active air intake grille opening, specifically: Determining whether the throttle opening information is higher than a preset opening threshold, determining whether the catalyst inlet temperature information is higher than a preset temperature threshold, and whether the vehicle speed information is lower than a preset vehicle speed threshold, and obtaining a determination result; Obtaining a corresponding adjustment amount of the active air intake grille opening according to the judgment result; The corresponding adjustment amount of the active air intake grille opening is obtained according to the judgment result, specifically: When the throttle opening information is lower than a preset opening threshold, and the catalyst inlet temperature information is lower than a preset temperature threshold, the adjustment amount of the active air intake grille opening is set to a first adjustment value; When the throttle opening information is higher than a preset opening threshold and the catalyst inlet temperature information is lower than a preset temperature threshold, setting the adjustment amount of the active air intake grille opening to a second adjustment value; When the throttle opening information is higher than a preset opening threshold, and the catalyst inlet temperature information is higher than a preset temperature threshold, setting the adjustment amount of the active air intake grille opening to a third adjustment value; When the throttle opening information is higher than a preset opening threshold, the catalyst inlet temperature information is higher than a preset temperature threshold, and the vehicle speed information is lower than the preset vehicle speed information, the adjustment amount of the active air intake grille opening is set to a fourth adjustment value, wherein the first adjustment value is lower than the second adjustment value, the second adjustment value is lower than the third adjustment value, and the third adjustment value is lower than the fourth adjustment value.

5. The vehicle thermal management control system according to claim 4, characterized in that: The information acquisition module includes: a temperature sensor unit, a throttle opening sensor and a vehicle speed sensor; Wherein, the temperature sensor unit is used to obtain catalyst inlet temperature information; The throttle opening sensor unit is used to obtain throttle opening information; The vehicle speed sensor is used to obtain vehicle speed information.

6. A terminal device, characterized in that: include: processor and memory, A computer program is stored in the memory, and the computer program is configured to be executed by the processor. When the processor executes the computer program, the vehicle thermal management control method according to any one of claims 1 to 3 is implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the vehicle thermal management control method according to any one of claims 1 to 3.

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