Vehicle axle difference and wheel difference protection method and system

Abstract

The invention discloses a vehicle axle difference and wheel difference protection method and system, and belongs to the technical field of automobiles. The protection method comprises the steps that vehicle state information is collected in real time, and when a vehicle is in a non-slip state and an inter-axle differential lock is in a locked state, an inter-axle differential lock unlocking instruction and / or an inter-wheel differential lock unlocking instruction are / is executed, and the unlocking instruction comprises the steps that a driver is guided to conduct manual unlocking operation on the inter-axle differential lock / the inter-wheel differential lock; or the inter-axle differential lock / inter-wheel differential lock is controlled to perform automatic unlocking operation. According to the invention, the differential lock can be timely and safely closed, the safety risk of the vehicle is reduced, and the humanization of a driver is considered while the intelligent unlocking of the differential lock is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobiles, and particularly relates to a vehicle axle differential and wheel differential protection method and system. BACKGROUND

[0002] The differential lock, also known as the differential lock, is an important component of an automobile. The differential lock functions to lock the differential case and the axle shaft as a whole when the automobile is running on a low adhesion road (muddy, sandy, icy and snowy) and one driving wheel slips, so that the differential loses the differential function and the entire torque is transferred to the driving wheel on the other side. The differential lock well solves the problem of power transmission when one wheel slips, so that the differential no longer functions and the driving wheels on the left and right sides can obtain the same torque.

[0003] Using the differential lock on a road with good adhesion (especially when turning on a paved road) will seriously damage the transmission system and the tire, so the differential lock should be unlocked immediately after the vehicle resumes normal driving. The existing differential lock can only be manually closed by the driver according to the actual road conditions, and lacks prompt information. The driver often cannot close the differential lock in time, resulting in damage to the transmission system and the tire, and even causing safety accidents. SUMMARY

[0004] The technical problem to be solved by the application is how to realize timely and safe closing of the axle differential lock and the wheel differential lock, reduce the safety risk of the vehicle, and improve the intelligent automatic unlocking of the differential lock while taking into account the humanization of the driver.

[0005] To achieve the above purpose, the technical scheme of the application is as follows.

[0006] In a first aspect, the application provides a vehicle axle differential and wheel differential protection method, comprising:

[0007] Real-time collection of vehicle state information, determination of whether the vehicle is in a non-slip state and whether the axle differential lock and / or the wheel differential lock is in a locked state according to the vehicle state information, and execution of an axle differential lock unlocking instruction and / or a wheel differential lock unlocking instruction;

[0008] The axle differential lock unlocking instruction execution process comprises:

[0009] If the driver's instruction to reset the axle differential lock switch is collected, then the conditions for unlocking the axle differential lock are determined according to the vehicle state information, corresponding prompt information for display on the instrument is generated to guide the driver to perform manual unlocking operation of the axle differential lock;

[0010] If the instruction of manually resetting the inter-axle differential lock switch is not collected, automatic unlocking operation is performed according to the following two conditions: condition one, the vehicle speed is greater than the first safe unlocking threshold within the first preset time, and the inter-axle differential lock is controlled to perform automatic unlocking operation; condition two, condition one is not triggered, and the inter-axle differential lock is controlled to perform automatic unlocking operation after the first preset time.

[0011] The inter-axle differential lock unlocking instruction execution process includes:

[0012] If the instruction of resetting the inter-axle differential lock switch by the driver is collected, the current condition of unlocking the inter-axle differential lock is determined according to the vehicle state information, and corresponding prompt information for display on the instrument is generated to guide the driver to perform manual unlocking operation of the inter-axle differential lock.

[0013] If the instruction of manually resetting the inter-axle differential lock switch is not collected, automatic unlocking operation is performed according to the following two conditions: condition one, the vehicle speed is greater than the first safe unlocking threshold within the first preset time, and the inter-axle differential lock is controlled to perform automatic unlocking operation; condition two, condition one is not triggered, and the inter-axle differential lock is controlled to perform automatic unlocking operation after the first preset time.

[0014] The vehicle state information at least includes one or more of the following information: throttle information, brake information, wheel speed information, axle speed information, vehicle speed information, steering wheel angle information, inter-axle differential lock state information and inter-axle differential lock state information.

[0015] The condition of unlocking the inter-axle differential lock is that the throttle information remains in a zero state, the vehicle speed is less than the first safe unlocking threshold, and the inter-axle differential lock switch is reset.

[0016] The condition of unlocking the inter-axle differential lock is that the throttle information remains in a zero state, the vehicle speed is less than the first safe unlocking threshold, and the inter-axle differential lock switch is reset.

[0017] The manual unlocking operation process of the inter-axle differential lock includes: if the instruction of the driver pressing the inter-axle differential lock switch is collected, the throttle information is detected to be a non-zero state, and the first prompt information for display on the instrument is generated to remind the driver to release the throttle; it is judged whether the vehicle speed is greater than the first safe unlocking threshold, if the vehicle speed is not greater than the first safe unlocking threshold, the reminder of unlocking the inter-axle differential lock successfully is generated for display on the instrument, when the vehicle speed is greater than the first safe unlocking threshold, the second prompt information for display on the instrument is generated to remind the driver to slow down, and when the speed is lower than the first safe unlocking threshold, the inter-axle differential lock is controlled to be unlocked.

[0018] The automatic unlocking operation process of the inter-axle differential lock includes: if no instruction of resetting the inter-axle differential lock switch is collected, the vehicle speed is greater than a first early warning speed threshold within a first preset time, first warning information is generated for display on the instrument to remind that the inter-axle differential lock is not unlocked, when the vehicle speed reaches a first safe unlocking threshold, the inter-axle differential lock switch is controlled to be automatically reset, and the inter-axle differential lock is unlocked; if the inter-axle differential lock switch is not reset after the first preset time, the inter-axle differential lock switch is controlled to be automatically reset, and the inter-axle differential lock is unlocked.

[0019] The manual unlocking operation process of the inter-wheel differential lock includes: if the instruction of the driver pressing the inter-wheel differential lock switch is collected, the accelerator information is detected to be in a non-zero state, third prompt information is generated for display on the instrument to remind the driver to release the accelerator; it is judged whether the vehicle speed is greater than a second safe unlocking threshold, if the vehicle speed is not greater than the second safe unlocking threshold, a reminder of successful unlocking of the inter-wheel differential lock is generated for display on the instrument, when the vehicle speed is greater than the second safe unlocking threshold, fourth prompt information is generated for display on the instrument to remind the driver to slow down, when the speed is lower than the second safe unlocking threshold, the inter-wheel differential lock is controlled to be unlocked, or it is judged whether there is a steering wheel angle, the inter-wheel differential lock is controlled to be unlocked, and a reminder of successful unlocking of the inter-wheel differential lock is generated for display on the instrument.

[0020] The automatic unlocking operation process of the inter-wheel differential lock includes: if no instruction of resetting the inter-wheel differential lock switch is collected, the vehicle speed is greater than a second early warning speed threshold within a second preset time, second warning information is generated for display on the instrument to remind that the inter-wheel differential lock is not unlocked; when the vehicle speed reaches the second safe unlocking threshold, or if there is a steering wheel angle, the inter-wheel differential lock switch is controlled to be automatically reset, and the inter-wheel differential lock is unlocked; if the inter-wheel differential lock switch is not reset after the second preset time, the inter-wheel differential lock switch is controlled to be automatically reset, and the inter-wheel differential lock is unlocked.

[0021] The first early warning speed threshold is less than the first safe unlocking threshold.

[0022] The second early warning speed threshold is less than the second safe unlocking threshold.

[0023] The unlocking processes of the inter-axle differential lock and the inter-wheel differential lock can be simultaneously executed, or the inter-axle differential lock unlocking process is executed first and then the inter-wheel differential lock unlocking process is executed, or the inter-wheel differential lock unlocking process is executed first and then the inter-axle differential lock unlocking process is executed.

[0024] In a second aspect, the present application provides a vehicle axle differential wheel differential protection system based on the above-mentioned vehicle axle differential wheel differential protection method, and the system includes:

[0025] A sensor unit collects vehicle state information in real time and outputs to a controller;

[0026] a controller for determining whether the vehicle is in a slipping state, the inter-axle differential lock and the inter-wheel differential lock are in a locked state and meet the unlocking condition according to the vehicle state information, generating corresponding inter-axle differential lock unlocking instructions and inter-wheel differential lock unlocking instructions and controlling other units of the system to execute;

[0027] an instrument for displaying prompt information or early warning information in the execution process of the inter-axle differential lock unlocking instructions and the inter-wheel differential lock unlocking instructions;

[0028] an inter-axle differential lock switch for switching the locking function and the unlocking function of the inter-axle differential lock;

[0029] an inter-wheel differential lock switch for switching the locking function and the unlocking function of the inter-wheel differential lock.

[0030] The present application has the advantages that the present application can not only actively remind and assist the driver to safely unlock the differential lock, reduce the operation difficulty, and avoid the safety risks caused by the misoperation of the driver, but also automatically unlock the differential lock in the case that the driver does not timely respond to the system prompt, reduce the risk of vehicle damage, prolong the service life of the vehicle, protect the transmission system, reduce the occurrence of safety accidents, improve the intelligence of the differential lock while taking into account the humanization of the driver. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The flowchart of the vehicle axle differential wheel differential protection method of the present application. DETAILED DESCRIPTION

[0032] The present application will be further described below in conjunction with the drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0033] It should be noted that the differential lock described in the present application includes an inter-wheel differential lock and an inter-axle differential lock.

[0034] The inter-wheel differential lock is used to lock the differential between the two wheels on the same axle. This differential lock is usually used in the rear axle or the front axle to ensure that the two wheels on the same axle rotate at the same speed. When driving on off-road or low adhesion road surface, if one wheel loses traction and starts to slip, the inter-wheel differential lock can lock the two wheels, so that the power is evenly distributed to the two wheels, thereby improving the traction and passing capacity of the vehicle.

[0035] An inter-axle differential lock is used to lock the differential between different vehicle axles. It is usually used in the central differential of a four-wheel drive vehicle to ensure that the front and rear axles rotate at the same speed. The inter-axle differential lock distributes power between the front and rear axles of the vehicle. Under normal driving conditions, the central differential allows the front and rear axles to rotate at different speeds to adapt to situations such as turning. However, under low adhesion conditions, the inter-axle differential lock can lock the central differential to ensure that power is evenly distributed to the front and rear axles, improving the traction of the vehicle.

[0036] Embodiment 1

[0037] Reference Figure 1 As shown in the figure, a vehicle axle differential wheel differential protection method comprises:

[0038] Real-time acquisition of vehicle state information, including: throttle information, brake information, wheel speed information, axle speed information, vehicle speed information, steering wheel angle information, inter-axle differential lock state information and inter-wheel differential lock state information;

[0039] If the driver resets the inter-axle differential lock switch, and after the driver's reset inter-axle differential lock switch command is collected, the current conditions for unlocking the inter-axle differential lock are determined according to the vehicle state information, and corresponding prompt information for display on the instrument is generated to guide the driver to perform manual inter-axle differential lock unlocking operation;

[0040] If the inter-axle differential lock switch manual reset command is not collected, the automatic unlocking operation is performed according to the following two conditions: Condition 1, the vehicle speed is greater than the first safe unlocking threshold within the first preset time, then the inter-axle differential lock is controlled to perform automatic unlocking operation; Condition 2, Condition 1 is not triggered, then the inter-axle differential lock is controlled to perform automatic unlocking operation after the first preset time.

[0041] The judgment method of whether the vehicle is in a non-slip state includes automatic judgment by the vehicle controller according to the vehicle state information and judgment by the driver according to driving experience.

[0042] Inter-axle differential lock unlocking conditions: throttle information remains zero state, vehicle speed is less than the first safe unlocking threshold, inter-axle differential lock switch is reset, and the inter-axle differential lock is unlocked when all the conditions are met;

[0043] Manual unlocking operation of the inter-axle differential lock: when the driver presses the inter-axle differential lock switch, if the driver's instruction of pressing the inter-axle differential lock switch is collected, the oil information is detected as a non-zero state, first prompt information is generated for display on the instrument to remind the driver to release the accelerator; it is judged whether the vehicle speed is greater than the first safe unlocking threshold, if the vehicle speed is not greater than the first safe unlocking threshold, the unlocking success of the inter-axle differential lock is reminded for display on the instrument, when the speed is greater than the first safe unlocking threshold, the second prompt information is generated for display on the instrument to remind the driver to slow down, and when the speed is lower than the first safe unlocking threshold, the inter-axle differential lock is controlled to be unlocked;

[0044] Automatic unlocking operation of the inter-axle differential lock: if the instruction of resetting the inter-axle differential lock switch is not collected, within the first preset time, the vehicle speed is greater than the first warning speed threshold, the first alarm information is generated for display on the instrument to remind that the inter-axle differential lock is not unlocked, when the vehicle speed reaches the first safe unlocking threshold, the inter-axle differential lock switch is automatically reset, and the inter-axle differential lock is unlocked; if the inter-axle differential lock switch is not reset after the first preset time, the inter-axle differential lock switch is controlled to be automatically reset, the inter-axle differential lock is unlocked, and the vehicle returns to normal.

[0045] During the automatic unlocking process of the inter-axle differential lock, the driver can interrupt the automatic unlocking process according to the prompt information on the instrument, and manually unlock, and the automatic unlocking function will not be responded again after a certain time after interruption.

[0046] The driver resets the inter-axle differential lock switch, if the driver's instruction of resetting the inter-axle differential lock switch is collected, then the current conditions for unlocking the inter-axle differential lock are judged according to the vehicle state information, corresponding prompt information is generated for display on the instrument to guide the driver to perform manual unlocking operation of the inter-axle differential lock;

[0047] If the instruction of manually resetting the inter-axle differential lock switch is not collected, automatic unlocking operation is performed according to the following two conditions: condition one, the vehicle speed greater than the second safe unlocking threshold is detected within the second preset time, then the inter-axle differential lock is controlled to be automatically unlocked; condition two, condition one is not triggered, then the inter-axle differential lock is controlled to be automatically unlocked after the second preset time.

[0048] The conditions for unlocking the inter-axle differential lock are: the oil information remains in a zero state; the vehicle speed is less than the second safe unlocking threshold and / or the steering wheel has a turning angle; the inter-axle differential lock switch is reset;

[0049] Manual unlocking operation of the inter-wheel differential lock: when the driver presses the inter-wheel differential lock switch, if the driver's instruction of pressing the inter-wheel differential lock switch is collected, the oil information is detected as a non-zero state, the third prompt information for displaying on the instrument is generated to remind the driver to release the oil; it is judged whether the vehicle speed is greater than the second safe unlocking threshold, if the vehicle speed is not greater than the second safe unlocking threshold, the inter-wheel differential lock unlocking success reminder for displaying on the instrument is generated, when the speed is greater than the second safe unlocking threshold, the fourth prompt information for displaying on the instrument is generated to remind the driver to slow down, when the speed is lower than the second safe unlocking threshold, the inter-wheel differential lock is controlled to realize unlocking, or it is judged whether the steering wheel has a turning angle, the inter-wheel differential lock is controlled to realize unlocking, and the inter-wheel differential lock unlocking success reminder for displaying on the instrument is generated;

[0050] Automatic unlocking operation of the inter-wheel differential lock: if the instruction of resetting the inter-wheel differential lock switch is not collected, within the second preset time, the vehicle speed is greater than the second early warning speed threshold, the second alarm information for displaying on the instrument is generated to remind that the inter-wheel differential lock is not unlocked; when the vehicle speed reaches the second safe unlocking threshold, or if the steering wheel has a turning angle, the inter-wheel differential lock switch is automatically reset, and the inter-wheel differential lock is unlocked; if the second preset time is detected, the inter-wheel differential lock switch is not reset, the inter-wheel differential lock switch is controlled to be automatically reset, the inter-wheel differential lock is unlocked, and the vehicle returns to normal;

[0051] During the automatic unlocking process of the inter-wheel differential lock, the driver can interrupt the automatic unlocking process according to the prompt information on the instrument, and manually unlock, and the automatic unlocking function will not be responded again after a certain time after interruption.

[0052] The first early warning speed threshold is less than the first safe unlocking threshold; the second early warning speed threshold is less than the second safe unlocking threshold. The specific values of the first early warning speed threshold, the second early warning speed threshold, the first safe unlocking threshold and the second safe unlocking threshold are related to the model and state of the vehicle, which are not limited in the present application.

[0053] In the embodiment, the unlocking processes of the inter-axle differential lock and the inter-wheel differential lock can be executed simultaneously, or the inter-axle differential lock unlocking process is executed first and then the inter-wheel differential lock unlocking process is executed, or the inter-wheel differential lock unlocking process is executed first and then the inter-axle differential lock unlocking process is executed.

[0054] Embodiment 2

[0055] A vehicle axle differential wheel differential protection system based on the above vehicle axle differential wheel differential protection method, the system comprises:

[0056] A sensor unit that collects vehicle state information in real time and outputs to a controller;

[0057] A controller is configured to determine, according to the vehicle state information, whether the vehicle is in a slipping state, whether the inter-axle differential lock and the inter-wheel differential lock are in a locked state and meet an unlocking condition, generate corresponding inter-axle differential lock unlocking instructions and inter-wheel differential lock unlocking instructions, and control other units of the system to execute the instructions.

[0058] An instrument is configured to display prompt information or early warning information in the execution of the inter-axle differential lock unlocking instructions and the inter-wheel differential lock unlocking instructions.

[0059] An inter-axle differential lock switch is configured to switch between the locking function and the unlocking function of the inter-axle differential lock.

[0060] An inter-wheel differential lock switch is configured to switch between the locking function and the unlocking function of the inter-wheel differential lock.

[0061] In summary, the present application not only actively reminds and assists the driver to safely unlock the differential lock, reduces the operation difficulty, and avoids the safety risks caused by the driver's misoperation, but also automatically unlocks the differential lock in the case that the driver does not timely respond to the system prompt, reduces the risk of vehicle damage, prolongs the service life of the vehicle, protects the transmission system, reduces the occurrence of safety accidents, improves the intelligence of the differential lock, and takes into account the humanization of the driver.

[0062] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A method for protecting vehicle axle and wheel difference, characterized in that, include: Real-time vehicle status information is collected. Based on the vehicle status information, it is determined that when the vehicle is in a non-slipping state and the inter-axle differential lock and / or the inter-wheel differential lock are locked, the inter-axle differential lock unlocking command and / or the inter-wheel differential lock unlocking command are executed. The inter-axle differential lock unlocking command execution process includes: If the driver's command to reset the inter-axle differential lock switch is received, the conditions for unlocking the inter-axle differential lock are determined based on the vehicle status information, and corresponding prompt information is generated for display on the instrument panel to guide the driver to perform manual unlocking of the inter-axle differential lock. If no manual reset command for the inter-axle differential lock switch is received, the automatic unlocking operation will be performed according to the following two conditions: Condition 1: If the vehicle speed is detected to be greater than the first safe unlocking threshold within the first preset time, the inter-axle differential lock will be controlled to perform an automatic unlocking operation; Condition 2: If Condition 1 is not triggered, the inter-axle differential lock will be controlled to perform an automatic unlocking operation after the first preset time. The process of executing the inter-wheel differential lock unlocking command includes: If the driver's command to reset the inter-wheel differential lock switch is received, the condition for unlocking the inter-wheel differential lock is determined based on the vehicle status information, and corresponding prompt information is generated for display on the instrument panel to guide the driver to manually unlock the inter-wheel differential lock. If no manual reset command is received for the inter-wheel differential lock switch, the automatic unlocking operation will be performed according to the following two conditions: Condition 1: If the vehicle speed is detected to be greater than the second safety unlocking threshold within the second preset time, the inter-wheel differential lock will be controlled to perform an automatic unlocking operation; Condition 2: If Condition 1 is not triggered, the inter-wheel differential lock will be controlled to perform an automatic unlocking operation after the second preset time.

2. The vehicle axle difference and wheel difference protection method according to claim 1, characterized in that, The vehicle status information includes at least one or more of the following: throttle information, braking information, wheel speed information, axle speed information, vehicle speed information, steering wheel angle information, inter-axle differential lock status information, and inter-wheel differential lock status information.

3. The vehicle axle difference and wheel difference protection method according to claim 2, characterized in that, The conditions for unlocking the inter-axle differential lock are: the throttle information remains at zero; the vehicle speed is less than the first safety unlocking threshold; and the inter-axle differential lock switch is reset.

4. The vehicle axle difference and wheel difference protection method according to claim 2, characterized in that, The conditions for unlocking the inter-wheel differential lock are: the throttle information remains at zero; the vehicle speed is less than the second safety unlock threshold and / or there is a steering wheel angle; Reset the inter-wheel differential lock switch.

5. The vehicle axle difference and wheel difference protection method according to claim 2, characterized in that, The manual unlocking process of the inter-axle differential lock includes: if the driver presses the inter-axle differential lock switch, and the throttle information is detected to be non-zero, a first prompt message is generated for display on the instrument panel to remind the driver to release the throttle; if the vehicle speed is not greater than the first safety unlocking threshold, a prompt message indicating successful unlocking of the inter-axle differential lock is generated for display on the instrument panel; if the vehicle speed is greater than the first safety unlocking threshold, a second prompt message is generated for display on the instrument panel to remind the driver to slow down; and if the speed is lower than the first safety unlocking threshold, the inter-axle differential lock is unlocked. The automatic unlocking process of the inter-axle differential lock includes: if no reset command is received for the inter-axle differential lock switch, and the vehicle speed exceeds a first warning speed threshold within a first preset time, a first alarm message is generated for display on the instrument panel to remind the inter-axle differential lock that it is not unlocked. When the vehicle speed reaches the first safe unlocking threshold, the inter-axle differential lock switch is automatically reset, and the inter-axle differential lock is unlocked. If, after the first preset time, it is detected that the inter-axle differential lock switch has not been reset, the inter-axle differential lock switch is automatically reset, and the inter-axle differential lock is unlocked.

6. The vehicle axle difference and wheel difference protection method according to claim 2, characterized in that, The manual unlocking process of the inter-wheel differential lock includes: if the driver presses the inter-wheel differential lock switch, and the throttle information is detected to be non-zero, a third prompt message is generated for display on the instrument panel to remind the driver to release the throttle; if the vehicle speed is not greater than the second safety unlocking threshold, a reminder that the inter-wheel differential lock has been successfully unlocked is generated for display on the instrument panel; if the vehicle speed is greater than the second safety unlocking threshold, a fourth prompt message is generated for display on the instrument panel to remind the driver to slow down; if the speed is lower than the second safety unlocking threshold, the inter-wheel differential lock is controlled to unlock; or if the steering wheel is turned, the inter-wheel differential lock is controlled to unlock, and a reminder that the inter-wheel differential lock has been successfully unlocked is generated for display on the instrument panel. The automatic unlocking process of the inter-wheel differential lock includes: if no command to reset the inter-wheel differential lock switch is received, and the vehicle speed exceeds a second warning speed threshold within a second preset time, a second alarm message is generated for display on the instrument panel to remind that the inter-wheel differential lock is not unlocked; when the vehicle speed reaches the second safety unlocking threshold, or if there is a steering wheel angle, the inter-wheel differential lock switch is automatically reset, and the inter-wheel differential lock is unlocked; if the inter-wheel differential lock switch is not reset after the second preset time, the inter-wheel differential lock switch is automatically reset, and the inter-wheel differential lock is unlocked.

7. The vehicle axle difference and wheel difference protection method according to claim 5, characterized in that, The first warning speed threshold is less than the first security unlock threshold.

8. The vehicle axle difference and wheel difference protection method according to claim 6, characterized in that, The second warning speed threshold is less than the second security unlock threshold.

9. The vehicle axle difference and wheel difference protection method according to claim 1, characterized in that, The unlocking processes of the inter-axle differential lock and the inter-wheel differential lock can be executed simultaneously, or the inter-axle differential lock unlocking process can be executed first and then the inter-wheel differential lock unlocking process can be executed, or the inter-wheel differential lock unlocking process can be executed first and then the inter-axle differential lock unlocking process can be executed.

10. A vehicle axle difference and wheel difference protection system, characterized in that, Based on the vehicle axle difference and wheel difference protection method according to any one of claims 1 to 9, the system includes: The sensor unit collects vehicle status information in real time and outputs it to the controller; The controller is used to determine whether the vehicle is slipping, whether the inter-axle differential lock and the inter-wheel differential lock are locked and meet the unlocking conditions based on the vehicle status information, generate the corresponding inter-axle differential lock unlocking command and inter-wheel differential lock unlocking command and control other system units to execute them. The instrument is used to display prompts or alarms during the execution of inter-axle differential lock unlocking commands and inter-wheel differential lock unlocking commands; The inter-axle differential lock switch is used to switch between locking and unlocking functions of the inter-axle differential lock. The inter-wheel differential lock switch is used to switch between locking and unlocking functions of the inter-wheel differential lock.

Images