A smart four-wheel drive clutch overheat warning and protection system and method

Abstract

This invention discloses an intelligent four-wheel drive clutch overheat warning and protection system and method, including a temperature acquisition module, a four-wheel drive controller, and a human-machine interface module. The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output terminal is connected to the four-wheel drive controller. The four-wheel drive controller is connected to the human-machine interface module and is used to display the collected temperature data to the user through the human-machine interface module and obtain the user's feedback control commands. The four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control commands entered into the human-machine interface module. The advantages of this invention are: it achieves clutch protection through human-machine interaction and satisfies the user's right to choose and be informed, thus improving the user experience of the four-wheel drive function.

Description

Technical Field

[0001] This invention relates to the field of automotive four-wheel drive system control, and in particular to an intelligent four-wheel drive clutch overheat warning and protection system and method. Background Technology

[0002] Mechanical on-demand four-wheel drive systems require controlling the engagement or disengagement of the clutch within the torque manager to switch between two-wheel drive and four-wheel drive modes. However, under extreme conditions, the clutch can overheat due to excessive speed differences between the front and rear axles. For clutch temperature monitoring, a device for dynamic testing of clutch steel plate temperature, a wet clutch, and a drive transfer case (patent application number 202011158897.2) is described. The temperature measurement component includes a temperature sensor, a transmitter module, and a power supply and transmission module. The temperature sensor is fixed to the clutch steel plate, the transmitter module is fixed to a rotating fixture, and the power supply and transmission module is mounted on the four-wheel drive transfer case. The temperature sensor and the transmitter module are electrically connected via wires, and the power supply and transmission module is wirelessly connected to the transmitter module. The temperature component can collect clutch temperature data, enabling temperature control.

[0003] The conventional operating method of existing technology is to automatically control the clutch to disengage and exit the four-wheel drive mode when the temperature of the four-wheel drive clutch is detected to reach the maximum temperature, thereby playing a protective role and avoiding damage to the clutch components caused by overheating, which would affect the use of the vehicle.

[0004] However, the current technology that directly disengages the clutch upon overheating only considers vehicle damage and neglects the user's actual situation and needs, severely impacting the user experience and even driving safety. For example, on extreme road surfaces such as steep inclines or muddy terrain, the sudden disengagement of the four-wheel drive when the clutch overheats significantly affects the customer's driving experience and may even pose safety risks, violating the principles of prioritizing user experience and safety, and seriously impacting the functional experience. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intelligent four-wheel drive clutch overheat warning protection system and method. It realizes clutch protection and satisfies the user's right to choose and be informed through human-computer interaction, thereby improving the user experience of four-wheel drive function.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an intelligent four-wheel drive clutch overheat warning and protection system, comprising a temperature acquisition module, a four-wheel drive controller, and a human-machine interaction module. The temperature acquisition module is used to acquire the actual temperature data of the clutch in real time, and its output terminal is connected to the four-wheel drive controller. The four-wheel drive controller is connected to the human-machine interaction module and is used to display the acquired temperature data to the user through the human-machine interaction module and obtain the user's feedback control commands. The four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control commands entered by the human-machine interaction module.

[0007] The four-wheel drive controller is connected to the engine management system (EMS). The four-wheel drive controller is used to send torque control commands to the engine management system (EMS). The engine management system (EMS) executes the torque control commands to control the engine output torque.

[0008] The four-wheel drive controller is connected to a vehicle slope sensor, which is used to collect real-time vehicle slope data. The four-wheel drive controller controls the clutch based on the real-time vehicle slope and temperature data.

[0009] The four-wheel drive controller is connected to the voice module and is used to issue corresponding overheat warning reminders via voice.

[0010] A control method for an intelligent four-wheel drive clutch overheat warning and protection system includes:

[0011] Collect clutch temperature data and compare it with a preset temperature threshold to determine whether to control clutch disengagement or to determine whether to control clutch disengagement based on user feedback commands; if it is determined that clutch disengagement needs to be controlled, the clutch disengagement warning information is broadcast via IHU voice and the clutch disengagement is controlled to switch from four-wheel drive to two-wheel drive mode.

[0012] A first temperature threshold and a second temperature threshold are preset. When the temperature is greater than the first temperature threshold but less than the second temperature threshold, the IHU system issues an overheat warning alarm signal and obtains the user's feedback control command. Based on the feedback information entered by the user through human-machine interaction, it is determined whether the clutch needs to be disengaged. When the clutch temperature is greater than or equal to the second temperature threshold, it is determined that the clutch needs to be disengaged.

[0013] When it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected. Based on the vehicle's driving status, it is determined whether to immediately perform the clutch disengagement action. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played via voice. If not, the clutch disengagement action is performed after a delay.

[0014] When the clutch disengagement action is delayed, the four-wheel drive is switched to two-wheel drive by disengaging the clutch. At the same time, the vehicle's driving status after switching to two-wheel drive is monitored, and the clutch is controlled based on the vehicle's driving status in two-wheel drive mode.

[0015] When the collected clutch temperature is greater than the first temperature threshold but less than the second temperature threshold, the IHU system for human-machine interaction displays a pop-up reminder and provides a user selection button to input the user's intention: maintain four-wheel drive or switch to two-wheel drive; the system then determines whether the clutch needs to disengage based on the user's input intention.

[0016] When the collected clutch temperature is greater than the first temperature threshold but less than the second temperature threshold, if the user chooses to continue in four-wheel drive mode, a torque reduction request command is sent to the engine management system (EMS). Upon receiving the torque reduction request command, the EMS executes it and reduces the engine torque value.

[0017] The advantages of this invention are: it protects the clutch and satisfies the user's right to choose and be informed through human-computer interaction, thus improving the user experience of the four-wheel drive function. When disengaging the clutch to switch from four-wheel drive to two-wheel drive, the vehicle's driving status is monitored in real time to avoid safety hazards caused by abnormal driving during the switch, thereby improving the adaptability of four-wheel drive and vehicle safety. Attached Figure Description

[0018] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0019] Figure 1 This is a schematic diagram of the system architecture of the protection system of this invention;

[0020] Figure 2 This is a flowchart of the control method for the protection system of the present invention. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0022] This invention utilizes the interaction between the four-wheel drive controller, engine, large screen, and driver to not only achieve clutch protection but also allow the driver to choose whether to extend the four-wheel drive usage time based on actual conditions. Even in abnormal temperature conditions, the clutch connection is disengaged, allowing a switch from four-wheel drive to two-wheel drive. Before and after the switch, the vehicle status is detected, and delays or control strategies are used to reduce the impact of switching from four-wheel drive to two-wheel drive on vehicle driving safety, improving the reliability of the switch, the safety of vehicle use, and the user's choice, thus enhancing the user experience.

[0023] like Figure 1As shown, an intelligent four-wheel drive clutch overheat warning and protection system includes a temperature acquisition module, a four-wheel drive controller, and a human-machine interaction module.

[0024] The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output is connected to the four-wheel drive controller. The four-wheel drive controller is connected to the human-machine interface module, which is used to display the collected temperature data to the user and obtain the user's feedback control commands. The four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control commands entered by the human-machine interface module.

[0025] The temperature acquisition module uses a temperature sensor to collect temperature data at the clutch, which is then sent to the four-wheel drive controller (AWD). The four-wheel drive controller is connected to the human-machine interface module (HMI) to achieve HMI control. The HMI module uses an IHU system, which includes an IHU host and a touchscreen connected to the host. The touchscreen enables interactive control.

[0026] The four-wheel drive controller (AWD) is connected to the engine management system (EMS). The AWD controller sends torque control commands to the EMS, which then executes these commands to control the engine's output torque. The AWD controller primarily controls engine torque. It can be directly connected to the EMS via a CAN network or indirectly via the engine control unit (IHU), meaning data is forwarded to the EMS through the IHU.

[0027] The four-wheel drive controller is connected to the voice module to issue corresponding overheat warnings via voice, making it easy to remind users. The vehicle's in-vehicle voice module reuses the voice module integrated in the IHU system, and issues corresponding reminder signals via the IHU system's voice.

[0028] The four-wheel drive controller connects to the vehicle's slope sensor, which collects real-time slope data. The controller then uses this data, along with the vehicle's temperature, to control the clutch. To prevent sudden switching from four-wheel drive to two-wheel drive while the vehicle is climbing an incline, the controller detects the vehicle's slope and controls the switch accordingly, minimizing safety hazards associated with this transition. Similarly, the four-wheel drive controller connects to a vehicle driving status sensor to collect real-time driving data and prevent accidents caused by switching between four-wheel and two-wheel drive modes.

[0029] The control method of the overheat warning protection system in the above embodiments includes collecting clutch temperature data, transmitting the temperature data to the four-wheel drive controller, setting a temperature threshold in the four-wheel drive controller, comparing the collected real-time clutch temperature data with the preset temperature threshold, and determining whether to control clutch disengagement or based on user feedback commands; if it is determined that clutch disengagement needs to be controlled, the clutch disengagement warning information is broadcast via IHU voice and the clutch disengagement is controlled to switch the four-wheel drive to two-wheel drive mode.

[0030] A first temperature threshold and a second temperature threshold are preset, with the second temperature threshold being greater than the first temperature threshold. The specific values ​​can be adjusted based on the clutch's temperature resistance data. When the real-time temperature of the clutch is lower than the first temperature threshold, it is determined that the clutch temperature meets the requirements for four-wheel drive operation, and the four-wheel drive mode is maintained without any adjustment or control.

[0031] When the temperature exceeds the first temperature threshold but falls below the second temperature threshold, it is already in a high-temperature phase. Although it hasn't reached the point of damaging the equipment, this temperature range could potentially cause further system overheating. Therefore, in this state, an overheat warning needs to be issued to the user, who should then confirm whether to disable four-wheel drive and switch to two-wheel drive. At this time, the four-wheel drive controller displays an overheat warning alarm for the clutch via a pop-up window on the IHU system's touchscreen to alert the user. Simultaneously, it receives user feedback control commands via the touchscreen, which are the user's input signals to maintain four-wheel drive or switch to two-wheel drive. Based on the user's feedback input through the human-machine interface, it determines whether clutch disengagement is necessary. If the user's feedback command is to disengage four-wheel drive, clutch disengagement is deemed necessary; otherwise, it is deemed unnecessary. When the clutch temperature is greater than or equal to the second temperature threshold, clutch disengagement is deemed necessary.

[0032] When the collected clutch temperature is greater than the first temperature threshold but less than the second temperature threshold, the IHU system driving the human-machine interface displays a pop-up reminder and provides a user selection button to input the user's intent. The user's intent includes: maintaining four-wheel drive or switching to two-wheel drive. A switching button is provided through a pop-up window on the touch screen, and the touch state of the switching button is collected in real time. If the switching button is triggered, the system determines whether to maintain four-wheel drive or switch to two-wheel drive based on the trigger state of the switching button. If the switching button is not triggered within a set time, it means that the user has not made a selection. In this case, the clutch does not need to be disengaged by default, and the system operates in four-wheel drive mode.

[0033] Based on the user's input, it is determined whether the clutch needs to be disengaged. If the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, and the user chooses to continue in four-wheel drive mode, a request to reduce torque is sent to the engine management system (EMS). After receiving the request to reduce torque, the EMS executes the command and reduces the engine torque value.

[0034] A pop-up window provides users with an overheat warning and a corresponding selection button, allowing them to choose whether to maintain four-wheel drive or switch to two-wheel drive, ensuring user choice and improving user experience. When the user chooses to maintain four-wheel drive (i.e., not to disengage it), although the temperature warning has been issued, it has not yet reached the alarm threshold that could damage the equipment. Therefore, while four-wheel drive can be maintained, the vehicle's four-wheel drive status needs to be limited to prevent further temperature increases and avoid safety risks associated with high temperatures. In this situation, a torque reduction request is sent to the engine management system (EMS), which then controls the engine torque to reduce it to a set threshold or reasonable value, thereby ensuring safe and reliable four-wheel drive operation within the temperature warning range.

[0035] When the temperature exceeds the first temperature threshold and it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected. Based on the vehicle's driving status, it is determined whether to immediately perform the clutch disengagement action. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played via voice. If not, the clutch disengagement action is performed after a delay. Vehicle status includes the slope the vehicle is on, which is the angle between the vehicle and the ground to determine whether the vehicle is climbing or descending. If the vehicle is climbing and suddenly switches from four-wheel drive to two-wheel drive, the climbing torque will suddenly disappear and decrease, which can easily cause safety accidents, or even rollover accidents, affecting the driving experience. Therefore, in this case, the slope of the vehicle is collected, and the safety of switching from four-wheel drive to two-wheel drive is judged based on the comparison between the slope and the slope threshold. When the slope is less than the set slope threshold, it means that there is no safety risk in switching directly from four-wheel drive to two-wheel drive. At this time, the four-wheel drive controller directly executes the clutch disengagement and controls the switch from four-wheel drive mode to two-wheel drive mode. Otherwise, it means that the slope is too large and affects safety. At this time, the clutch action is delayed, and a pop-up reminder is issued through the IHU system, reminding the driver that the clutch height will switch to two-wheel drive mode after the delay. This reminds the driver to prepare for switching to two-wheel drive in time and avoid the safety hazards caused by sudden switching to two-wheel drive.

[0036] When executing the clutch disengagement command with a delay, the four-wheel drive is switched to two-wheel drive after the delay time is reached. After switching to two-wheel drive, the vehicle's driving status is monitored, and the clutch is controlled based on the vehicle's driving status in two-wheel drive mode. After switching to two-wheel drive mode, the vehicle's driving status is monitored in real time to determine if there are any abnormal driving conditions during the switch from four-wheel drive to two-wheel drive mode. Abnormal driving conditions include: vehicle rolling backward, and the vehicle's gear position not matching its direction of movement. When an abnormal driving condition is detected, to improve safety, the four-wheel drive controller intermittently switches between two-wheel drive and four-wheel drive modes to avoid potential safety hazards caused by switching from four-wheel drive to two-wheel drive. Intermittent switching means that when an abnormal driving condition is detected, the two-wheel drive mode is switched to four-wheel drive mode, held for a set time, and then switched back to two-wheel drive mode. The abnormal condition is then monitored again in two-wheel drive mode until the temperature returns to normal. This approach protects the clutch from temperature fluctuations as much as possible while avoiding safety hazards caused by switching from four-wheel drive to two-wheel drive.

[0037] This invention utilizes the interaction between the four-wheel drive controller, engine EMS, IHU large screen, and driver to achieve rear main reduction clutch protection and extend four-wheel drive service life. Figure 2 As shown, the specific steps are as follows:

[0038] 1. Temperature signal acquisition: Temperature sensor to collect the actual temperature of the clutch in real time. A surface-mount temperature sensor or an infrared temperature sensor is used. The sensor type is selected according to the installation requirements at the clutch.

[0039] 2. Signal Transmission and Processing: The first and second temperature thresholds in this solution are 200°C and 250°C, respectively. The specific temperature values ​​can be adjusted based on the clutch's temperature resistance parameters. These temperature thresholds are preset in the four-wheel drive controller. The controller performs internal logic calculations. If the actual temperature exceeds 200°C, a "soon to overheat signal" is transmitted to the IHU main screen via the CAN bus. If the actual temperature exceeds 250°C, a "overheated signal" is transmitted to the main screen via the CAN bus, and the four-wheel drive controller automatically controls the clutch to disengage. This disengagement can be immediate or delayed. When clutch disengagement is required, the vehicle's driving status is collected. Based on this status, it is determined whether to immediately execute the clutch disengagement action. If so, the clutch disengagement action is executed immediately, and a clutch disengagement reminder is played via voice. If not, the clutch disengagement action is delayed. The vehicle status includes the vehicle's slope, i.e., the angle between the vehicle and the ground. The system collects the slope of the vehicle and compares it with a slope threshold to determine whether it is safe to switch from four-wheel drive to two-wheel drive. If the slope is less than the set slope threshold, it means that switching directly from four-wheel drive to two-wheel drive will not pose a safety risk. In this case, the four-wheel drive controller directly executes clutch disengagement to switch from four-wheel drive mode to two-wheel drive mode. Otherwise, it means that the slope is too steep and affects safety. In this case, the clutch action is delayed, and a pop-up reminder is issued through the IHU system, reminding the driver that the clutch height will switch to two-wheel drive mode after the delay. This reminds the driver to prepare for switching to two-wheel drive in time and avoid the safety hazards caused by sudden switching to two-wheel drive.

[0040] 3. Human-Machine Interaction and Main Screen Feedback: After receiving an "overheating signal," the IHU main unit will announce "The clutch is about to overheat. Please select whether to exit four-wheel drive mode" via the IHU system's voice module. The large screen will display a "Temperature too high, exit four-wheel drive mode" button. When the main screen receives an "overheating signal," it will announce "The clutch is overheating, four-wheel drive has been disengaged, and it will return to normal after the temperature drops" or "The clutch is overheating, four-wheel drive will disengage after a delay, and it will return to normal after the temperature drops."

[0041] 4. Human-machine interaction: After the large screen displays the button "Temperature too high, exit four-wheel drive mode", if you select "Yes", the four-wheel drive mode will be exited. If you select "No", the four-wheel drive mode will be maintained. The main screen sends a "request to reduce torque" signal to the engine.

[0042] 5. Engine torque reduction: After receiving the "request to reduce torque signal", the EMS reduces the output torque, thereby reducing the speed difference between the front and rear axles, thus extending the clutch overheating time and improving the driver's driving experience.

[0043] like Figure 1 The diagram shown illustrates the system composition and signal transmission between systems in this application. The signal transmission relationships are as follows:

[0044] 1. Signal transmission:

[0045] A. The temperature sensor collects the clutch temperature and transmits it to the four-wheel drive controller via a hard wire.

[0046] B. The four-wheel drive controller sends an impending overheat signal (AWD_bCluWilloverheat) and an already overheated signal (AWD_bCluHasoverheat) to the large screen via the CAN bus.

[0047] C. The large screen sends a request for torque reduction signal IHU_bReqengredtq to the engine via the CAN bus;

[0048] D. The large screen sends a request for four-wheel drive disconnection signal IHU_bRerAWDdisconnect to the four-wheel drive controller via the CAN line;

[0049] 2. Four-wheel drive controller calculation:

[0050] A. The four-wheel drive controller performs logical operations on the temperature signal AWD_tClutemp. If AWD_tClutemp > 200, it is determined that the clutch temperature is too high, and then the enable signal AWD_bCluWilloverheat is set to 1.

[0051] B. If AWD_tClutemp>250, it is determined that it is overheated. The enable signal AWD_bCluHasoverheat is set to 1, the clutch disengagement signal is set to 1, and the AWD_bClu_disconnect signal is set to 1 to control the clutch disengagement and the four-wheel drive is disconnected.

[0052] 3. Human-computer interaction:

[0053] The large-screen IHU performs logical judgment: If AWD_bCluWilloverheat is 1, the voice will announce "The clutch is about to overheat, please select whether to exit four-wheel drive mode", and the screen will pop up a "Temperature too high, exit four-wheel drive mode" button. If the driver selects yes, the four-wheel drive disconnect signal IHU_bRerAWDdisconnect is requested to be set to 1, and the button pop-up function will disappear until the clutch temperature drops, at which point the button pop-up function will be restored along with the four-wheel drive. If no is selected, the engine torque reduction signal IHU_bReqengredtq is requested to be set to 1, and the button pop-up function will disappear until the four-wheel drive is disconnected after this clutch overheating, at which point the button pop-up function will be restored along with the four-wheel drive.

[0054] 4. Human-computer interaction results:

[0055] A. Selecting to disconnect four-wheel drive on the large screen: When IHU_bRerAWDdisconnect is set to 1, the clutch disengagement signal AWD_bClu_disconnect is set to 1, and the four-wheel drive controller controls the clutch disengagement; after the temperature drops to 150°, the clutch disengagement signal AWD_bClu_disconnect is set to 0, and the four-wheel drive automatically resumes.

[0056] B. Large screen selection to keep four-wheel drive off: The engine receives the IHU_bReqengredtq signal, reduces the output torque, reduces the speed difference between the front and rear axles of the vehicle, slows down the temperature rise of the clutch, extends the duration of four-wheel drive, and improves the user's driving experience.

[0057] C. If the large screen selection does not disengage the four-wheel drive, the four-wheel drive system will operate normally until the clutch overheats. Upon receiving the overheat signal AWD_bCluHasoverheat, the IHU will announce via voice, "Clutch overheated, four-wheel drive disengaged. Normal operation will resume after temperature decreases."

[0058] This invention utilizes the interaction between the four-wheel drive controller, engine, large screen, and driver to not only protect the clutch but also allow the driver to choose whether to extend the four-wheel drive usage time based on actual conditions. Temperature monitoring and early warning are used to protect the clutch, improving the safety and reliability of the four-wheel drive system and avoiding safety issues caused by excessive temperature.

[0059] Obviously, the specific implementation of this invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. An intelligent four-wheel drive clutch overheat warning and protection system, characterized in that: The system includes a temperature acquisition module, a four-wheel drive controller, and a human-machine interface module. The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output is connected to the four-wheel drive controller. The four-wheel drive controller is connected to the human-machine interface module and is used to display the collected temperature data to the user and obtain the user's feedback control commands. The four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control commands entered by the human-machine interface module. The system presets a first temperature threshold and a second temperature threshold. When the temperature is greater than the first temperature threshold but less than the second temperature threshold, the IHU system issues an overheat warning alarm signal and obtains the user's feedback control command. Based on the feedback information entered by the user through human-machine interaction, it determines whether the clutch needs to be disengaged. When the clutch temperature is greater than or equal to the second temperature threshold, it determines that the clutch needs to be disengaged. The four-wheel drive controller is connected to the vehicle slope sensor, which is used to collect real-time vehicle slope data. The four-wheel drive controller controls the clutch based on the real-time vehicle slope and temperature data. When the temperature exceeds the first temperature threshold and it is determined that the clutch needs to disengage, the slope of the vehicle is collected. When the slope is less than the set slope threshold, the four-wheel drive controller directly executes the clutch disengagement action and controls the switch from four-wheel drive mode to two-wheel drive mode. Otherwise, the clutch action is executed after a delay, and a pop-up reminder is issued through the IHU system, reminding that the clutch height will switch to two-wheel drive mode after the delay.

2. The intelligent four-wheel drive clutch overheat warning and protection system as described in claim 1, characterized in that: The four-wheel drive controller is connected to the engine management system (EMS). The four-wheel drive controller is used to send torque control commands to the engine management system (EMS). The engine management system (EMS) executes the torque control commands to control the engine output torque.

3. The intelligent four-wheel drive clutch overheat warning and protection system as described in claim 1 or 2, characterized in that: The four-wheel drive controller is connected to the voice module and is used to issue corresponding overheat warning reminders via voice.

4. A control method for an intelligent four-wheel drive clutch overheat warning and protection system as described in any one of claims 1-3, characterized in that: include: Collect clutch temperature data and compare it with a preset temperature threshold to determine whether to control clutch disengagement or to determine whether to control clutch disengagement based on user feedback commands. If it is determined that clutch disengagement needs to be controlled, the clutch disengagement warning message will be broadcast via IHU voice and the clutch disengagement will be controlled to switch the four-wheel drive to two-wheel drive mode.

5. The control method of the intelligent four-wheel drive clutch overheat warning protection system as described in claim 4, characterized in that: When it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected. Based on the vehicle's driving status, it is determined whether to immediately perform the clutch disengagement action. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played via voice. If not, the clutch disengagement action is performed after a delay.

6. The control method of the intelligent four-wheel drive clutch overheat warning protection system as described in claim 5, characterized in that: When the clutch disengagement action is delayed, the four-wheel drive is switched to two-wheel drive by disengaging the clutch. At the same time, the vehicle's driving status after switching to two-wheel drive is monitored, and the clutch is controlled based on the vehicle's driving status in two-wheel drive mode.

7. The control method of the intelligent four-wheel drive clutch overheat warning protection system as described in claim 4, characterized in that: When the collected clutch temperature is greater than the first temperature threshold but less than the second temperature threshold, the IHU system for human-machine interaction displays a pop-up reminder and provides a user selection button to input the user's intention: maintain four-wheel drive or switch to two-wheel drive; the system then determines whether the clutch needs to disengage based on the user's input intention.

8. The control method of the intelligent four-wheel drive clutch overheat warning protection system as described in claim 7, characterized in that: When the collected clutch temperature is greater than the first temperature threshold but less than the second temperature threshold, if the user chooses to continue in four-wheel drive mode, a torque reduction request command is sent to the engine management system (EMS). Upon receiving the torque reduction request command, the EMS executes it and reduces the engine torque value.

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