Intelligent four-wheel drive clutch overheating early warning protection system and method

Abstract

The invention discloses an intelligent four-wheel-drive clutch overheating early warning protection system and method.The system comprises a temperature collection module, a four-wheel-drive controller and a man-machine interaction module, the temperature collection module is used for collecting actual temperature data of a clutch in real time, and the output end of the temperature collection module is connected to the four-wheel-drive controller; the four-wheel-drive controller is connected with the man-machine interaction module and used for displaying the collected temperature data to a user through the man-machine interaction module and obtaining a feedback control instruction of the user. And the four-wheel-drive controller drives and controls the working state of the four-wheel-drive clutch based on a feedback control instruction of a user input by the man-machine interaction module. The system has the advantages that the clutch is protected in a man-machine interaction mode, the selection right and the right to know of a user are met, and the user experience of the four-wheel drive function is improved.

Description

Technical Field

[0001] The present invention relates to the field of automobile four-wheel drive system control, and in particular to an intelligent four-wheel drive clutch overheating early warning protection system and method. Background Art

[0002] Mechanical timely four-wheel drive needs to switch between two-wheel drive and four-wheel drive mode by controlling the separation or combination of the clutch in the torque manager. However, in extreme working conditions, the clutch will overheat due to the large speed difference between the front and rear axles. For the temperature monitoring of the clutch, such as the patent application number 202011158897.2, a clutch steel plate temperature dynamic test device, a wet clutch and a drive transfer case, a temperature measurement component, including a temperature sensor, a transmitter module and a power supply and transmission module, the temperature sensor is fixed on the clutch steel plate, the transmitter module is fixed on the rotating tooling, and the power supply and transmission module is installed on the four-wheel drive transfer case; the temperature sensor and the transmitter module are electrically connected by wires, and the power supply and transmission module is electrically connected to the transmitter module wirelessly. The clutch temperature data can be collected through the temperature component, and the temperature control can be achieved after the temperature data is collected.

[0003] The conventional operation mode of the prior art is that when it is detected that the temperature of the four-wheel drive clutch reaches the maximum temperature, the four-wheel drive controller directly controls the clutch to disengage automatically and exit the four-wheel drive mode, thereby playing a protective role and avoiding damage to the clutch components caused by overheating, which affects the use of the vehicle.

[0004] However, the existing technology directly disconnects the clutch after overheating, so that the clutch separation solution only considers whether the vehicle is damaged or not, but does not consider the actual situation and needs of the user, which will seriously affect the user's experience and even affect driving safety. If the clutch overheats when climbing a high slope or passing through muddy roads, the four-wheel drive suddenly disconnects, which greatly affects the customer's driving experience and may even pose a safety risk, violating the requirements of user experience and safety first, and seriously affecting the functional experience. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an intelligent four-wheel drive clutch overheating warning protection system and method, which realizes clutch protection and satisfies the user's choice and right to know through human-computer interaction, thereby improving the user experience of the four-wheel drive function.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an intelligent four-wheel drive clutch overheating warning protection system, including a temperature acquisition module, a four-wheel drive controller, and a human-computer interaction module. The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output end is connected to the four-wheel drive controller; the four-wheel drive controller is connected to the human-computer interaction module, and is used to display the collected temperature data to the user through the human-computer interaction module and obtain the user's feedback control instructions; the four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control instructions entered by the human-computer 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 a torque control instruction to the engine management system EMS. The engine management system EMS executes the torque control instruction to achieve control of the engine output torque.

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

[0009] The four-wheel drive controller is connected to the voice module and is used to issue a corresponding overheating warning reminder through voice.

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

[0011] The clutch temperature data is collected and compared with the preset temperature threshold to determine whether to control the clutch to disengage or to determine whether to control the clutch to disengage based on the user's feedback instructions; if it is determined that the clutch needs to be disengaged, the clutch disengagement warning information is broadcast through the IHU voice and the clutch is controlled to disengage to achieve the switch from four-wheel drive to dual-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 and less than the second temperature threshold, an overheating warning alarm signal is issued through the IHU system and a user's feedback control instruction is obtained. The clutch separation is determined based on the feedback information entered by the user through human-computer interaction. When the clutch temperature is greater than or equal to the second temperature threshold, it is determined that the clutch separation is required at this time.

[0013] When it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected, and based on the vehicle's driving status, it is determined whether the clutch disengagement action should be performed immediately. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played through voice; if not, the clutch disengagement action is performed with a delay.

[0014] When the clutch disengagement action is executed with a delay, the four-wheel drive is switched to the two-wheel drive through clutch disengagement, and the driving state of the vehicle after switching to the two-wheel drive is monitored at the same time, and the clutch is controlled based on the driving state of the vehicle in the two-wheel drive mode.

[0015] When the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, the IHU system driving the human-computer interaction displays a pop-up window with a reminder message and provides the user with a selection button to enter the user's intention: maintain four-wheel drive or switch to two-wheel drive; determine whether the clutch needs to be disengaged based on the intention entered by the user.

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

[0017] The advantages of the present invention are: the protection of the clutch is realized by human-computer interaction, the user's right to choose and be informed is satisfied, and the user experience of the four-wheel drive function is improved. When the clutch is disconnected and the four-wheel drive is switched to the two-wheel drive, the driving state of the vehicle is monitored in real time to avoid the safety hazards caused by abnormal driving of the vehicle when the four-wheel drive is switched to the two-wheel drive, thereby improving the adaptability of the four-wheel drive and the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0019] Figure 1 The system architecture composition principle diagram of the protection system of the present invention;

[0020] Figure 2 This is a flow chart of the control method of the protection system of the present invention. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0022] The present invention utilizes the interaction between the four-wheel drive controller, the engine, the large screen and the driver, which can not only realize clutch protection, but also allow the driver to choose whether to extend the use time of the four-wheel drive according to actual conditions. Even in the case of abnormal temperature, the clutch connection is disconnected to switch from four-wheel drive to two-wheel drive. The vehicle status is also detected before and after the switch, and the delay or control strategy is used to reduce the impact of the switch from four-wheel drive to two-wheel drive on the vehicle's driving safety, thereby improving the reliability of the switch, the safety of vehicle use and the user's selectivity, thereby improving the user experience.

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

[0024] The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output end is connected to the four-wheel drive controller; the four-wheel drive controller is connected to the human-computer interaction module to display the collected temperature data to the user through the human-computer interaction module and obtain the user's feedback control instructions; the four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control instructions entered into the human-computer interaction module.

[0025] The temperature acquisition module is implemented using a temperature sensor to collect temperature data at the clutch, and the temperature data is sent to the four-wheel drive controller AWD; the four-wheel drive controller is connected to the human-computer interaction module to achieve the purpose of human-computer interactive control. The human-computer interaction module is implemented using the IHU system. The on-board IHU system includes an IHU host and a touch screen connected to the host, and the purpose of interactive control is achieved through the touch screen.

[0026] The four-wheel drive controller is connected to the engine management system EMS. The four-wheel drive controller is used to send torque control instructions to the engine management system EMS, and the engine management system EMS executes the torque control instructions to control the engine output torque. The four-wheel drive controller AWD is connected to the engine control system EMS, mainly to control the engine torque. It can be directly connected to the CAN network or indirectly connected to the EMS through the IHU system, that is, the data is forwarded to the EMS through the IHU.

[0027] The four-wheel drive controller is connected to the voice module to issue corresponding overheating warning reminders through voice, so as to remind the user. The car-mounted voice module reuses the voice module integrated in the IHU system to issue corresponding reminder signals through the IHU system voice.

[0028] The four-wheel drive controller is connected to the vehicle slope sensor, which is used to collect the real-time slope data of the vehicle. The four-wheel drive controller controls the clutch based on the real-time slope and temperature data of the vehicle. In order to avoid the four-wheel drive suddenly switching to two-wheel drive when the vehicle is in the climbing stage, the slope of the vehicle is detected, and the four-wheel drive is switched to two-wheel drive based on the slope to reduce the safety hazards caused by the four-wheel drive switching to two-wheel drive. Similarly, the four-wheel drive controller is connected to the vehicle driving status sensor to collect the real-time driving status of the vehicle to avoid vehicle safety accidents caused by switching between four-wheel drive and two-wheel drive modes.

[0029] The control method of the overheating warning protection system based on the above embodiment includes collecting temperature data of the clutch, and the temperature data is transmitted to the four-wheel drive controller. A temperature threshold is pre-set in the four-wheel drive controller, and the collected real-time clutch temperature data is compared with the preset temperature threshold to determine whether to control the clutch to separate or to determine whether to control the clutch to separate based on user feedback instructions; if it is determined that the clutch needs to be controlled to separate, the clutch separation warning information is broadcasted by the IHU voice and the clutch separation is controlled to achieve the switching of the four-wheel drive to the dual-wheel drive mode.

[0030] A first temperature threshold and a second temperature threshold are preset, and the value of the second temperature threshold is greater than the value of the first temperature threshold. The specific value can be adjusted and set according to the temperature resistance data of the clutch. When the real-time temperature of the clutch is lower than the first temperature threshold, it is judged that the clutch temperature can meet the use scenario of the four-wheel drive. At this time, the four-wheel drive mode is maintained without any adjustment control.

[0031] When the temperature is greater than the first temperature threshold and less than the second temperature threshold, the temperature is already in the high temperature stage. Although it has not reached the temperature that damages the equipment, it is very likely to cause the system to heat up further in this temperature range. Therefore, in this state, the user needs to be reminded of the overtemperature warning, and the user confirms whether to turn off the four-wheel drive and switch to two-wheel drive. At this time, the four-wheel drive controller displays the early warning alarm information of the clutch temperature overheating through the touch screen pop-up window of the IHU system to remind the user, and obtains the user's feedback control instruction through the touch screen. The feedback control instruction refers to the instruction signal of the user inputting the four-wheel drive or switching to two-wheel drive through the touch screen; then judge whether the clutch needs to be separated according to the feedback information entered by the user through human-computer interaction. When the feedback information instruction entered by the user is to disconnect the four-wheel drive, it is judged that the clutch needs to be separated at this time, otherwise it is judged that the clutch does not need to be separated at this time. When the clutch temperature is greater than or equal to the second temperature threshold, it is judged that the clutch needs to be separated at this time.

[0032] When the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, the IHU system driving the human-computer interaction displays a pop-up window with a reminder message and provides a user selection button to enter the user's intention, which includes: maintaining four-wheel drive or switching to two-wheel drive; providing a switch button through a touch screen pop-up window, and then collecting the touch status of the switch button in real time. If the switch button is triggered, it is determined whether to maintain four-wheel drive or switch to two-wheel drive based on the trigger status of the switch button. If the switch button is not triggered within the set time, it means that the user has no choice. At this time, the clutch does not need to be disengaged by default, and the vehicle remains in four-wheel drive mode.

[0033] The clutch needs to be disengaged based on the intention entered by the user. When the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, if the user chooses to continue to maintain the four-wheel drive mode, a request for torque reduction instruction is sent to the engine management system EMS. After receiving the request for torque reduction instruction, the engine management system EMS executes it and reduces the torque value of the engine.

[0034] The user is given an overheating reminder through a pop-up window and a corresponding selection button is provided. The user can choose whether to maintain four-wheel drive or switch to two-wheel drive, thereby ensuring the user's right to choose and improving the user experience. When the user chooses to maintain four-wheel drive, that is, does not choose to disconnect the four-wheel drive, at this time, although the temperature has been warned, it has not reached the alarm threshold for damaging the equipment. Therefore, although the four-wheel drive can be maintained at this time, the vehicle in the four-wheel drive state needs to be limited to avoid further temperature increases and avoid safety risks under high temperature conditions. Therefore, in this case, a request instruction to reduce the torque is sent to the engine EMS, and the engine management system EMS drives and controls the engine's torque to be reduced to a set threshold or a reasonable value, thereby ensuring safe and reliable four-wheel drive operation of the vehicle within the temperature warning range.

[0035] When the temperature is greater than the first temperature threshold and it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected, and based on the vehicle's driving status, it is determined whether the clutch disengagement action should be performed immediately. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played through voice; if not, the clutch disengagement action is performed with a delay. The vehicle state includes the slope on which the vehicle is traveling, that is, the inclination angle between the vehicle and the ground is collected to determine whether the vehicle is in a climbing or descending state. If the four-wheel drive is suddenly switched to two-wheel drive in the climbing state, the climbing torque suddenly disappears and decreases, which is easy to cause safety accidents or even rollover accidents, affecting the driving experience. Therefore, in this case, the slope of the vehicle is collected, and based on the comparison between the slope and the slope threshold, it is determined whether it is safe for the vehicle to switch from four-wheel drive to two-wheel drive at this time. When the slope is less than the set slope threshold, it means that there is no safety risk in directly switching the four-wheel drive to two-wheel drive at this time. At this time, the four-wheel drive controller directly executes the clutch separation execution, and the control is switched from the four-wheel drive mode to the two-wheel drive mode; otherwise, it means that the slope is large at this time, which affects safety. At this time, the clutch action is delayed, and a pop-up reminder is issued through the IHU system to remind the driver that the clutch height will be switched to the two-wheel drive mode after the delay. Please pay attention to the driver, so as to remind the driver to prepare for switching to two-wheel drive in time to avoid safety hazards caused by sudden switching to two-wheel drive.

[0036] When the clutch release command is executed with delay, the four-wheel drive is switched to the two-wheel drive through clutch release after the delay time is reached. After switching to the two-wheel drive, the driving state of the vehicle after switching to the two-wheel drive is monitored at the same time, and the clutch is controlled based on the driving state of the vehicle in the two-wheel drive mode. After switching to the two-wheel drive mode, the driving state of the vehicle is monitored in real time to determine whether there is an abnormal driving state when the four-wheel drive is switched to the two-wheel drive mode. The abnormal driving state includes: the vehicle slips backward, the gear position of the vehicle is inconsistent with the direction of movement of the vehicle. When the vehicle is inspected to be in an abnormal driving state, in order to improve safety, the four-wheel drive controller intermittently switches between the two-wheel drive and four-wheel drive modes to avoid the hidden dangers of vehicle safety driving caused by the four-wheel drive switching to the two-wheel drive. Intermittent switching means that when the vehicle is detected to be in an abnormal driving state, the two-wheel drive mode is switched to the four-wheel drive mode for a set time and then switched to the two-wheel drive mode, and then the abnormal state of the vehicle is continued to be monitored in the two-wheel drive mode until the temperature returns to normal. This approach can protect the clutch from the influence of temperature as much as possible while avoiding the safety hazards caused by the four-wheel drive switching to the two-wheel drive.

[0037] The present invention utilizes the interaction among the four-wheel drive controller, the engine EMS, the IHU large screen and the driver to realize the rear main reduction clutch protection and prolong the use time of the four-wheel drive. Figure 2 As shown, the specific steps are as follows:

[0038] 1. Temperature signal acquisition: The temperature sensor collects the actual temperature of the clutch in real time. It uses a patch temperature sensor or an infrared temperature sensor. The sensor type is selected according to the installation requirements of the clutch.

[0039] 2. Signal transmission and processing: The first and second temperature thresholds in this solution are 200° and 250° respectively. The specific temperature values ​​can be adjusted according to the clutch temperature resistance parameters; the temperature threshold is pre-set in the four-wheel drive controller, and the four-wheel drive controller performs logical operations internally. If the actual temperature collected is greater than 200°, the "imminent overheating signal" is transmitted to the IHU main screen through the CAN bus. If the actual temperature collected is greater than 250°, the "overheating signal" is transmitted to the main screen through the CAN bus and the four-wheel drive controller automatically controls the clutch to disconnect, which can be controlled to disconnect immediately or delayed. When it is determined that the clutch needs to be disengaged, the driving state of the vehicle is collected, and it is determined whether to immediately perform the clutch disengagement action based on the driving state of the vehicle. If so, the clutch disengagement action is immediately performed and the clutch disengagement reminder is played through voice; if not, the clutch disengagement action is delayed. The vehicle state includes the slope on which the vehicle is driving, that is, the inclination angle between the vehicle and the ground is collected. The slope of the vehicle is collected, and based on the comparison between the slope and the slope threshold, it is judged whether it is safe for the vehicle to switch from four-wheel drive to two-wheel drive at this time. When the slope is less than the set slope threshold, it means that directly switching from four-wheel drive to two-wheel drive at this time will not cause safety risks. At this time, the four-wheel drive controller directly executes clutch disengagement and controls the switch from four-wheel drive mode to two-wheel drive mode; otherwise, it means that the slope is large at this time, which 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 soon switch to two-wheel drive mode after the delay. Please pay attention, so as to remind the driver to prepare for switching to two-wheel drive in time to avoid safety hazards caused by sudden switching to two-wheel drive.

[0040] 3. Human-computer interaction and main screen feedback: After the IHU host receives the "overheating signal", the voice module of the IHU system will broadcast "the clutch is about to overheat, please choose whether to exit the four-wheel drive mode", and the "temperature is too high, exit the four-wheel drive mode" button will pop up on the large screen; when the main screen receives the "overheating signal", the voice broadcast will say "the clutch is overheated, the four-wheel drive has been disconnected, and it will return to normal after the temperature drops" or "the clutch is overheated, the four-wheel drive will be disconnected after a delay, and it will return to normal after the temperature drops."

[0041] 4. Human-computer interaction: After the "Temperature is too high, exit four-wheel drive mode" button pops up on the large screen, if you select yes, the four-wheel drive mode will be exited. If you select no, the four-wheel drive mode will continue to be maintained, and the main screen will send a "request to reduce torque signal" to the engine.

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

[0043] like Figure 1 The figure is a schematic diagram of the system composition and signal transmission between systems of the present application, and the signal transmission relationship is 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 hard wire.

[0046] B. The four-wheel drive controller sends the overheating signal AWD_bCluWilloverheat and the overheating signal AWD_bCluHasoverheat to the large screen through the CAN line.

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

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

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

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

[0051] B. If AWD_tClutemp>250, it is judged as overheating, the enable signal AWD_bCluHasoverheat is set to 1, the clutch release signal is set to 1, and the AWD_bClu_disconnect signal is set to 1, the clutch is controlled to release, 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 broadcast "The clutch is about to overheat, please choose whether to exit the four-wheel drive mode", and the screen pops up the "Temperature is 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 disappears until the clutch temperature drops, and the button pop-up function is restored 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 disappears until the four-wheel drive is disconnected after the clutch overheats, and the button pop-up function is restored with the four-wheel drive.

[0054] 4. Human-computer interaction results:

[0055] A. The large screen selects to disconnect the four-wheel drive: IHU_bRerAWDdisconnect is set to 1, then the clutch disconnect signal AWD_bClu_disconnect is set to 1, and the four-wheel drive controller controls the clutch to disconnect; after the temperature drops to 150°, the clutch disconnect signal AWD_bClu_disconnect is set to 0, and the four-wheel drive automatically recovers.

[0056] B. The large screen selects to keep four-wheel drive on: The engine receives the IHU_bReqengredtq signal, reduces the output torque, and reduces the speed difference between the front and rear axles of the vehicle, which slows down the heating of the clutch, prolongs the duration of four-wheel drive, and improves the user's driving experience.

[0057] C. The screen selects not to disconnect the four-wheel drive, and the four-wheel drive system works normally until the clutch overheats. The IHU receives the overheat signal AWD_bCluHasoverheat and broadcasts the voice message "The clutch is overheated, the four-wheel drive has been disconnected, and it will return to normal after the temperature drops."

[0058] The present invention utilizes the interaction between the four-wheel drive controller, the engine, the large screen and the driver, which can not only realize clutch protection, but also allow the driver to choose whether to extend the four-wheel drive use time according to actual conditions. The temperature monitoring and early warning are used to realize clutch protection, improve the safety and reliability of the four-wheel drive system, and avoid the safety impact caused by excessive temperature.

[0059] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. An intelligent four-wheel drive clutch overheating early warning protection system, characterized in that: It includes a temperature acquisition module, a four-wheel drive controller, and a human-computer interaction module. The temperature acquisition module is used to collect the actual temperature data of the clutch in real time, and its output end is connected to the four-wheel drive controller; the four-wheel drive controller is connected to the human-computer interaction module, and is used to display the collected temperature data to the user through the human-computer interaction module and obtain the user's feedback control instructions; the four-wheel drive controller drives and controls the working state of the four-wheel drive clutch based on the user's feedback control instructions entered by the human-computer interaction module.

2. The intelligent four-wheel drive clutch overheating early warning protection system according to 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 a torque control instruction to the engine management system EMS. The engine management system EMS executes the torque control instruction to achieve control of the engine output torque.

3. An intelligent four-wheel drive clutch overheating early warning protection system as claimed in claim 1 or 2, characterized in that: The four-wheel drive controller is connected to a vehicle slope sensor, which is used to collect real-time slope data of the vehicle. The four-wheel drive controller controls the clutch based on the real-time slope and temperature data of the vehicle.

4. An intelligent four-wheel drive clutch overheating early warning protection system as claimed in claim 1 or 2, characterized in that: The four-wheel drive controller is connected to the voice module and is used to issue a corresponding overheating warning reminder through voice.

5. A control method for the intelligent four-wheel drive clutch overheating early warning protection system according to any one of claims 1 to 4, characterized in that: include: Collect clutch temperature data and compare it with a preset temperature threshold to determine whether to control the clutch to disengage or determine whether to control the clutch to disengage based on user feedback instructions; If it is determined that the clutch needs to be disengaged, the clutch disengagement warning information will be broadcasted through the IHU voice and the clutch disengagement will be controlled to switch the four-wheel drive to the two-wheel drive mode.

6. The control method of the intelligent four-wheel drive clutch overheat warning protection system according to claim 5, characterized in that: A first temperature threshold and a second temperature threshold are preset. When the temperature is greater than the first temperature threshold and less than the second temperature threshold, an overheating warning alarm signal is issued through the IHU system and a user's feedback control instruction is obtained, and whether the clutch needs to be disengaged is determined based on the feedback information entered by the user through human-computer interaction; when the clutch temperature is greater than or equal to the second temperature threshold, it is determined that the clutch needs to be disengaged at this time.

7. The control method of the intelligent four-wheel drive clutch overheat warning protection system according to claim 6, characterized in that: When it is determined that the clutch needs to be disengaged, the vehicle's driving status is collected, and based on the vehicle's driving status, it is determined whether the clutch disengagement action should be performed immediately. If so, the clutch disengagement action is performed immediately and a clutch disengagement reminder is played through voice; if not, the clutch disengagement action is performed with a delay.

8. The control method of the intelligent four-wheel drive clutch overheat warning protection system according to claim 7, characterized in that: When the clutch disengagement action is executed with a delay, the four-wheel drive is switched to the two-wheel drive through clutch disengagement, and the driving state of the vehicle after switching to the two-wheel drive is monitored at the same time, and the clutch is controlled based on the driving state of the vehicle in the two-wheel drive mode.

9. The control method of the intelligent four-wheel drive clutch overheat warning protection system according to claim 6, characterized in that: When the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, the IHU system driving the human-computer interaction displays a pop-up window with a reminder message and provides the user with a selection button to enter the user's intention: maintain four-wheel drive or switch to two-wheel drive; determine whether the clutch needs to be disengaged based on the intention entered by the user.

10. A control method for an intelligent four-wheel drive clutch overheat warning protection system according to claim 6 or 9, characterized in that: When the collected clutch temperature is greater than the first temperature threshold and less than the second temperature threshold, if the user chooses to continue to maintain the four-wheel drive mode, a torque reduction request instruction is sent to the engine management system EMS. After receiving the torque reduction request instruction, the engine management system EMS executes it and reduces the torque value of the engine.

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