Vehicle tire burning method and device, electronic equipment and vehicle

Abstract

The invention discloses a vehicle tire burning method and device, electronic equipment and a vehicle, and belongs to the technical field of vehicles. The method comprises the steps of controlling a left rear wheel and a right rear wheel of the vehicle to steer in different directions and applying braking torque to front wheels of the vehicle when it is detected that a tire burning function is started; and distributing driving torque to the left rear wheel and the right rear wheel according to the treading depth of a power pedal of the vehicle so as to burn the tire of the vehicle. The rear wheel independent steering function is added, after the tire burning function is started, the left rear wheel and the right rear wheel of the vehicle can be automatically controlled to steer in different directions, the resistance of the whole vehicle can be obviously increased, part of rear wheel driving force in the driving process is also distributed to the transverse direction of the vehicle due to the steering angle, and the driving efficiency is improved. The driving torque of the whole vehicle is reduced, the driving force of the whole vehicle is smaller than the resistance of the whole vehicle by combining the braking torque of the front wheel, so that the tire burning action is realized, a driver does not need to perform complicated operation in the tire burning process, and the tire burning efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and in particular relates to a vehicle tire burning method, device, electronic equipment and vehicle. Background Art

[0002] Burnout is a special driving technique that allows the tires to spin at high speed in place, producing a lot of smoke and harsh noise. At the same time, the temperature of the tire surface rises rapidly, causing the rubber to soften or even slightly melt, thereby improving the tire's grip.

[0003] Existing burnout methods usually require the driver to perform a series of complex operations. Taking a manual rear-wheel drive car as an example, the driver needs to first turn off the body stability system, choose an open area with low friction, then step on the clutch with his left foot, shift into first gear, step on the brake with the toe of his right foot, and use the heel of his right foot to step on the accelerator to a high speed, and finally quickly release the clutch, maintain a high speed and continue to step on the half brake to achieve the burnout. The operation of an automatic transmission vehicle also requires certain skills, such as shifting the gear to the lowest gear, stepping on the brake and accelerator at the same time, and releasing the brake after the speed reaches a certain height. However, the above-mentioned burnout method requires the driver to perform complex operations, and requires the driver to have high driving skills and rich experience, and the burnout efficiency is low. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a vehicle tire burning method, device, electronic equipment and vehicle to improve the tire burning efficiency.

[0005] In a first aspect, the present application provides a vehicle tire burnout method, comprising:

[0006] When the burnout function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle;

[0007] A driving torque is distributed to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle to perform tire burnout on the vehicle.

[0008] According to the vehicle burning tire method of the present application, when the burning tire function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; the driving torque is allocated to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle to burn the tires of the vehicle. The embodiment of the present application adds an independent rear wheel steering function. After the burning tire function is turned on, the left rear wheel and the right rear wheel of the vehicle can be automatically controlled to steer in different directions, which can significantly increase the resistance of the whole vehicle. In addition, part of the rear wheel driving force is also distributed to the lateral direction of the vehicle due to the steering angle during the driving process, which reduces the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, thereby achieving the burning tire action. The driver does not need to perform complicated operations during the burning tire process, which improves the burning tire efficiency.

[0009] According to one embodiment of the present application, the vehicle includes a burnout function button; the method further includes:

[0010] Whether the burnout function is turned on is detected according to the triggering condition of the burnout function button.

[0011] In this embodiment, by providing a burnout function button, the driver can conveniently turn on the burnout function without complicated operations, which reduces the requirements for driving skills and further improves the efficiency of the burnout.

[0012] According to one embodiment of the present application, controlling the left rear wheel and the right rear wheel of the vehicle to turn in different directions respectively includes:

[0013] The left rear wheel is controlled to rotate in a first direction at a first steering angle, and the right rear wheel is controlled to rotate in a second direction at a second steering angle.

[0014] In this embodiment, by controlling the left rear wheel and the right rear wheel to rotate in different directions at specific angles respectively, part of the rear wheel driving force during the driving process is also distributed to the lateral direction of the vehicle due to the steering angle, thereby reducing the driving torque of the entire vehicle. By controlling the steering angle, the stability and controllability of the tire burning process can be improved.

[0015] According to one embodiment of the present application, when the first direction is the outer side of the vehicle, the second direction is the inner side of the vehicle; when the second direction is the outer side of the vehicle, the first direction is the inner side of the vehicle.

[0016] In this embodiment, the left rear wheel and the right rear wheel are respectively controlled to rotate in different directions at specific angles so that the rear wheel driving force is distributed to different lateral directions of the vehicle, thereby improving the stability of the tire burning process.

[0017] According to one embodiment of the present application, the first steering angle and the second steering angle are the same.

[0018] In this embodiment, by setting the steering angles of the left rear wheel and the right rear wheel to be the same, the force on the left and right sides of the vehicle is more evenly applied, thereby improving the balance and stability of the vehicle during the tire burnout process.

[0019] According to one embodiment of the present application, before distributing the driving torque to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle, the method includes:

[0020] Prompt the driver that the steering of the left rear wheel and the right rear wheel is completed;

[0021] And / or, prompting the driver to complete applying braking torque to the front wheels.

[0022] In this embodiment, before distributing the driving torque according to the power pedal depression depth, the driver is prompted to complete the steering of the left and right rear wheels and the application of braking torque to the front wheels, thereby enhancing the driver's control over the vehicle status and further improving the safety of the burnout operation.

[0023] According to one embodiment of the present application, before distributing the driving torque to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle, the method includes:

[0024] Increasing the suspension stiffness of the vehicle.

[0025] In this embodiment, before distributing the driving torque according to the power pedal depression depth, by increasing the suspension stiffness of the vehicle, the influence of the driving wheel slip on the vehicle body posture can be reduced, so that the vehicle maintains a more stable posture, thereby improving the safety and stability of tire burnout.

[0026] According to an embodiment of the present application, the allocating driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle includes:

[0027] detecting a rotation angle of the front wheel;

[0028] When the turning angle of the front wheel is within a preset range, the driving torque is distributed to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle.

[0029] In this embodiment, by detecting the turning angle of the front wheels, the vehicle can maintain good directional stability during the burnout process, reduce vehicle loss of control due to excessive turning angle of the front wheels, and improve the safety of the burnout process.

[0030] According to one embodiment of the present application, the maximum driving torque of the left rear wheel and the right rear wheel is determined according to the whole vehicle resistance of the vehicle.

[0031] In this embodiment, by matching the maximum driving torque of the left rear wheel and the right rear wheel with the resistance of the entire vehicle, the vehicle can obtain sufficient power during the tire burning process, and the problem of vehicle loss of control due to excessive power is reduced, thereby improving the efficiency and safety of the tire burning process.

[0032] According to one embodiment of the present application, the method further includes:

[0033] Obtaining the tread temperature of the vehicle tire;

[0034] When the tread temperature is greater than a preset temperature, the tire burning function is stopped.

[0035] In this embodiment, the tread temperature of the vehicle tire is obtained, and the burnout function is stopped when the tread temperature exceeds a preset temperature, thereby reducing the risk of rubber aging, deformation, and even tire blowout due to excessive tire temperature, thereby not only protecting the tire but also improving the safety of the burnout.

[0036] According to one embodiment of the present application, obtaining the tread temperature of the vehicle tire includes:

[0037] collecting the torque of the vehicle driving device, the wheel speed and the ambient temperature;

[0038] The torque of the vehicle driving device, the wheel speed and the ambient temperature are substituted into a preset tread temperature model to obtain the tread temperature of the vehicle tire.

[0039] In this embodiment, the torque of the vehicle drive device, the wheel speed and the ambient temperature are collected and substituted into a preset tread temperature model, and the influence of various factors on the tire temperature is comprehensively considered to more accurately calculate the tread temperature.

[0040] According to one embodiment of the present application, the expression of the tread temperature model includes:

[0041]

[0042] Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, M i Indicates the mass of gas in the tire, C t Indicates the heat capacity of the tread, C c Represents the heat capacity of the carcass, C i represents the heat capacity of the gas in the tire, T t Indicates the tread temperature, T c Indicates the carcass temperature, Ti represents the temperature of the gas inside the tire, t represents the time, Q s Indicates the heat generated by tire sliding friction, R t The distribution coefficient of the hysteresis energy loss generated by the periodic deformation inside the tire dissipated on the tread, Q c Indicates the hysteresis energy loss caused by the periodic deformation inside the tire, Q tr represents the heat exchange between the tread and the road surface, Q ta represents the heat exchange between the tread and the atmosphere, Q tc Indicates the heat exchange between the tread and the carcass, Q ca represents the heat exchange between the carcass and the surrounding environment, Q cg Indicates the heat conduction between the gas inside the tire and the tire body.

[0043] According to one embodiment of the present application, the expression of the tread temperature model includes:

[0044]

[0045] Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, C t Indicates the heat capacity of the tread, C c represents the heat capacity of the carcass, T t Indicates the tread temperature, T c represents the carcass temperature, t represents the time, Q s represents the heat generated by tire sliding friction, Q tc Indicates the heat exchange between the tread and the carcass, T i It represents the gas temperature inside the tire, and h4 represents the heat exchange coefficient between the tire body and the atmosphere.

[0046] In a second aspect, the present application provides a vehicle tire burning device, comprising:

[0047] A control module, configured to control the left rear wheel and the right rear wheel of the vehicle to steer in different directions respectively, and to apply a braking torque to the front wheels of the vehicle when detecting that the burnout function is turned on;

[0048] The tire burning module is used to distribute driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle, so as to burn the tires of the vehicle.

[0049] According to the vehicle burning tire device of the present application, when the burning tire function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; the driving torque is allocated to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle to burn the tires of the vehicle. The embodiment of the present application adds a rear wheel independent steering function. After the burning tire function is turned on, the left rear wheel and the right rear wheel of the vehicle can be automatically controlled to steer in different directions, which can significantly increase the resistance of the whole vehicle. In addition, part of the rear wheel driving force during the driving process is also distributed to the lateral direction of the vehicle due to the steering angle, reducing the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, thereby achieving the burning tire action. The driver does not need to perform complicated operations during the burning tire process, which improves the burning tire efficiency.

[0050] In a third aspect, the present application provides an electronic device, including a processor, wherein the processor is connected to a memory, the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the vehicle burnout method described in the first aspect above is implemented.

[0051] In a fourth aspect, the present application provides a vehicle, comprising the vehicle tire burning device as described in the second aspect or the electronic device as described in the third aspect.

[0052] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the vehicle burnout method as described in the first aspect above is implemented.

[0053] In a sixth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the vehicle burnout method as described in the first aspect above.

[0054] In a seventh aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the vehicle burnout method as described in the first aspect above.

[0055] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0056] According to the vehicle burning tire method of the present application, when the burning tire function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; the driving torque is allocated to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle to burn the tires of the vehicle. The embodiment of the present application adds an independent rear wheel steering function. After the burning tire function is turned on, the left rear wheel and the right rear wheel of the vehicle can be automatically controlled to steer in different directions, which can significantly increase the resistance of the whole vehicle. In addition, part of the rear wheel driving force is also distributed to the lateral direction of the vehicle due to the steering angle during the driving process, which reduces the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, thereby achieving the burning tire action. The driver does not need to perform complicated operations during the burning tire process, which improves the burning tire efficiency.

[0057] Furthermore, in some embodiments, by providing a burnout function button, the driver can conveniently turn on the burnout function without having to perform complicated operations, thereby reducing the requirements for driving skills and further improving the efficiency of the burnout.

[0058] Furthermore, in some embodiments, by respectively controlling the left rear wheel and the right rear wheel to rotate in different directions at specific angles, part of the rear wheel driving force during the driving process is also distributed to the lateral direction of the vehicle due to the steering angle, thereby reducing the driving torque of the entire vehicle. By controlling the steering angle, the stability and controllability of the tire burning process can be improved.

[0059] Furthermore, in some embodiments, by respectively controlling the left rear wheel and the right rear wheel to rotate in different directions at specific angles, the rear wheel driving force is distributed to different lateral directions of the vehicle, thereby improving the stability of the tire burning process.

[0060] Furthermore, in some embodiments, by setting the steering angles of the left rear wheel and the right rear wheel to be the same, the force on the left and right sides of the vehicle is more evenly applied, thereby improving the balance and stability of the vehicle during the burnout process.

[0061] Furthermore, in some embodiments, before distributing the driving torque according to the power pedal depression depth, the driver's control over the vehicle status is enhanced by prompting the driver to complete the steering of the left and right rear wheels and to complete the application of braking torque to the front wheels, thereby further improving the safety of the burnout operation.

[0062] Furthermore, in some embodiments, before distributing the driving torque according to the power pedal depression depth, by increasing the suspension stiffness of the vehicle, the effect of the drive wheel slip on the vehicle body posture can be reduced, so that the vehicle maintains a more stable posture, thereby improving the safety and stability of tire burnout.

[0063] Furthermore, in some embodiments, by detecting the turning angle of the front wheels, the vehicle can maintain good directional stability during the burnout process, reduce vehicle loss of control due to excessive turning angle of the front wheels, and improve the safety of the burnout process.

[0064] Furthermore, in some embodiments, by matching the maximum driving torque of the left rear wheel and the right rear wheel with the resistance of the entire vehicle, the vehicle can obtain sufficient power during the tire burning process and reduce the problem of vehicle loss of control due to excessive power, thereby improving the efficiency and safety of the tire burning process.

[0065] Furthermore, in some embodiments, by obtaining the tread temperature of the vehicle tire and stopping the tire burning function when the tread temperature exceeds a preset temperature, the risks of rubber aging, deformation, and even tire blowout caused by excessive tire temperature are reduced, which not only protects the tire but also improves the safety of the tire burning.

[0066] Furthermore, in some embodiments, by collecting the torque of the vehicle drive device, the wheel speed and the ambient temperature and substituting them into a preset tread temperature model, the influence of various factors on the tire temperature is comprehensively considered to more accurately calculate the tread temperature.

[0067] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0069] Figure 1 It is a topological diagram of the vehicle burnout function provided in an embodiment of the present application;

[0070] Figure 2 It is one of the rear wheel actions of the vehicle provided in the embodiment of the present application;

[0071] Figure 3 This is the second vehicle rear wheel action provided in the embodiment of the present application;

[0072] Figure 4 is a schematic flow chart of a vehicle tire burning method provided in an embodiment of the present application;

[0073] Figure 5 is a schematic diagram of tire force analysis during tire burning provided by an embodiment of the present application;

[0074] Figure 6 is a schematic structural diagram of a vehicle tire burning device provided in an embodiment of the present application;

[0075] Figure 7 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0077] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0078] The vehicle's burnout function has important applications in the field of racing and high-performance sports cars. For example, in a straight-line acceleration race, burnout is an essential preparation. Through burnout, the tires can quickly reach the optimal friction temperature, thereby providing stronger grip at the start of the race and helping the vehicle to achieve faster acceleration. In high-performance sports cars, the burnout function can not only improve the vehicle's starting performance, but also bring a strong visual and auditory impact to the driver, enhancing the driving experience.

[0079] The existing burnout method requires the driver to perform complex operations and requires the driver to have high driving skills and rich experience. For example, the burnout operation requires the driver to have a deep understanding of the vehicle's performance and be able to accurately control the accelerator and brake force. The complex operation process makes the burnout process time-consuming, especially in racing competitions where frequent burnout operations are required, and the burnout efficiency is low.

[0080] In the following, in conjunction with the accompanying drawings, the vehicle tire burning method, device, electronic device and vehicle provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0081] First, a scenario example is used to introduce the vehicle tire burning method, device, electronic device and vehicle provided in the embodiment of the present application. Figure 1As shown, in this scenario example, the vehicle may include a burnout function control module and an actuator module.

[0082] The burnout function control module includes a driving force control and distribution module, a braking force setting and distribution module, an intelligent rear-wheel steering control module, and an intelligent suspension control module. The actuator may include a driving system, a braking system, a rear-wheel independent steering system, and a suspension system.

[0083] When the driver activates the burnout function, he needs to step on the accelerator pedal to issue a driving force request. If the vehicle is a four-wheel drive vehicle, the driving force control and distribution module needs to distribute the driving force to ensure that the front wheels do not distribute driving force and only the rear wheels apply driving force. If the vehicle is a rear-wheel drive vehicle, the driving force control and distribution module needs to send the required driving torque signal to the corresponding drive system actuator.

[0084] The braking force control system is responsible for distributing the braking torque to the four wheels of the vehicle. When the rear wheels burn out, the braking force setting and distribution module must ensure that no braking torque is distributed to the rear wheels, and only the front wheels apply braking force, and send the corresponding braking torque signal and specific value to the corresponding brake system actuator.

[0085] When the intelligent rear steering control module receives a rear wheel burnout function request, it sends the rear wheel steering signal and the specific steering angle value requirement to the corresponding rear wheel independent steering system actuator. When the intelligent suspension control module receives a rear wheel burnout function request, it sends the suspension stiffness adjustment signal and the adjustment requirement to the corresponding suspension system actuator.

[0086] Next, the function implementation process shown in this scenario example is explained in detail in combination with the actuator execution action. When the driver chooses to turn on the one-button burnout function, the intelligent rear turn control module and the intelligent suspension control module send the control request and the corresponding rear turn angle and suspension stiffness adjustment request to the rear wheel independent steering system and the suspension system. At this time, the rear wheels first adjust the corresponding angle value so that the two rear wheels are in an "inward eight" or "outward eight" action, such as Figure 2 and Figure 3 As shown, the suspension stiffness increases. The adjusted rear wheel independent steering system and suspension system feed back their own status signals to the driver, informing the driver that the independent rear steering system and suspension system have been implemented in place.

[0087] The brake control module sends the braking torque signal and demand to the brake system, and the front wheel brake system responds to the braking request and applies the corresponding braking torque. The rear wheel brake system does not respond to the braking request and does not perform the braking operation. The adjusted brake system feeds back its own status signal to the driver to inform the driver that the braking system has been implemented. When the driver confirms that the braking system, rear wheel independent steering system, and suspension system are ready to execute, he steps on the accelerator pedal, and the driving force control and distribution module sends the driving torque signal and demand to the drive system, which responds to the driving request and executes the corresponding driving torque. At this time, because the resistance in the longitudinal direction of the vehicle is greater than the driving force in the longitudinal direction, the vehicle realizes the semi-automatic tire burnout function based on rear wheel independent steering.

[0088] The following describes a vehicle tire burning method provided in an embodiment of the present application, wherein the vehicle tire burning method can be applied to a terminal, and can be specifically executed by hardware or software in the terminal.

[0089] Optionally, the terminal includes, but is not limited to, a portable communication device such as a mobile phone or tablet computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad). It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but a desktop computer having a touch-sensitive surface (e.g., a touch screen display and / or a touch pad). In some embodiments, the terminal may also be an optical receiver, an optical fiber switch, etc. having a processor.

[0090] However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse and joystick.

[0091] The vehicle tire burning method provided in the embodiment of the present application may be executed by an electronic device or a functional module or functional entity in the electronic device that can implement the vehicle tire burning method. The electronic device mentioned in the embodiment of the present application may include but is not limited to a server, an ECU (Electronic Control Unit), an MCU (Microcontroller Unit) or other controllers, etc. The vehicle tire burning method provided in the embodiment of the present application is described below by taking the electronic device as an example of the execution subject.

[0092] like Figure 4 As shown, the vehicle tire burning method includes: step 410 and step 420.

[0093] Step 410: When it is detected that the burnout function is turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle.

[0094] In the embodiment of the present application, the activation condition of the burnout function can be pre-set, and whether the burnout function is activated is detected based on whether the activation condition is met. For example, when the vehicle is stopped, if the driver presses the accelerator and the brake pedal at the same time, the activation condition of the burnout function is satisfied, and the burnout function is determined to be activated.

[0095] In some embodiments, the vehicle may include a burnout function button, and whether the burnout function is turned on may be detected based on a triggering condition of the burnout function button.

[0096] Specifically, the burnout function button can be a physical button or a virtual button. If the burnout function button is a virtual button, the burnout function button can be set on the screen of the vehicle. When the driver presses the burnout function button, a trigger signal is generated, and it is determined according to the trigger signal whether the burnout function button is pressed correctly. If the burnout function button is triggered normally, the burnout function will be turned on and the subsequent burnout operation will be prepared.

[0097] In this embodiment, by providing a burnout function button, the driver can conveniently turn on the burnout function without complicated operations, which reduces the requirements for driving skills and further improves the efficiency of the burnout.

[0098] In an embodiment of the present application, the vehicle may include a rear-wheel independent steering system, through which the steering of the rear wheels of the vehicle can be controlled. In one example, the rear-wheel independent steering system may include components such as a screw, a drive assembly, and a control device. The two ends of the screw are respectively connected to the yoke, and the rear wheel steering is achieved by pulling the yoke; the drive assembly includes a rotor member and a stator member, and when the rotor member rotates, the screw is driven to move along its length direction; the control device can control the rotor member to rotate to a specific angle according to the position sensor information, so that the screw is in the target position to control the steering of the rear wheels of the vehicle. Of course, the rear-wheel independent steering system can also be other structures, which are not limited in the embodiment of the present application.

[0099] In the embodiment of the present application, the structure of the vehicle may include front wheels and rear wheels. The vehicle is described based on the direction from the rear end to the front end, the direction close to the front end is the front end of the vehicle, the direction close to the rear end is the rear end of the vehicle, the wheel at the front end of the vehicle is the front wheel, the wheel at the rear end of the vehicle is the rear wheel, the rear wheel at the left side of the vehicle is the left rear wheel, and the wheel at the right side of the vehicle is the right rear wheel.

[0100] In the embodiment of the present application, when the burnout function is detected to be turned on, the left rear wheel and the right rear wheel can be steered in different directions respectively through the rear wheel independent steering system. For example, the left rear wheel can be controlled to turn left, while the right rear wheel can be controlled to turn right. Figure 2 As shown, the rear wheels of the vehicle are turned "outward", or the left rear wheel is controlled to turn right and the right rear wheel is controlled to turn left. Figure 3As shown, the rear wheels of the vehicle are made to move inward-facing.

[0101] In the embodiment of the present application, in order to make the burnout proceed smoothly, it is also necessary to apply a braking torque to the front wheels. Specifically, the braking torque of the front wheels can be adjusted through the vehicle's braking system so that the front wheels of the vehicle can remain relatively still during the burnout process, while the rear wheels can freely perform the burnout operation.

[0102] Step 420: Distribute driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle to burn out the tires of the vehicle.

[0103] In the embodiment of the present application, the burnout process is partially completed accurately through step 410. If the burnout is to be performed, a driving force needs to be applied. Specifically, the driver can step on the power pedal of the vehicle to provide driving force for the rear wheels of the vehicle. Since the left rear wheel and the right rear wheel of the vehicle turn in different directions, the resistance of the whole vehicle can be increased significantly. In addition, part of the rear wheel driving force during the driving process is also divided into the lateral direction of the vehicle due to the steering angle, which reduces the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, and the rear wheels are more likely to idle, thereby achieving the effect of burning the tires.

[0104] It should be noted that the vehicle in the embodiment of the present application can be a vehicle of any energy form, for example, it can be a fuel vehicle, an electric vehicle, a solar vehicle, a methanol vehicle, or a vehicle of hybrid energy, etc. The embodiment of the present application is not limited to this.

[0105] According to the energy form of the vehicle, the power pedal can be the accelerator of the vehicle, or the ignition switch of the vehicle.

[0106] When the driver steps on the power pedal, the position sensor of the power pedal will convert the pedal's stepping depth into an electrical signal. Based on the electrical signal, the driver's demand for driving torque can be determined, and the corresponding driving torque can be allocated to the left and right rear wheels of the vehicle. For example, when the driver steps on the power pedal deeply, the driver needs a greater power output. The driver can control the intensity and duration of the burnout by adjusting the stepping depth of the power pedal. For example, lightly stepping on the power pedal can cause the tire to spin slightly and produce a small amount of smoke; while stepping on the power pedal deeply will cause the tire to spin at high speed, producing a lot of smoke and harsh noise.

[0107] The following describes the principle of achieving the tire burning function through the vehicle tire burning method of the embodiment of the present application. Figure 5 As shown, Figure 5 This is a tire force analysis diagram when burning tires in the vehicle tire burning method according to an embodiment of the present application.

[0108] Take the "outward-toe" action of the left and right rear wheels as an example for explanation, where the front wheels of the vehicle are clamped by the braking system and have no driving torque, f is the static friction generated by the front wheel tire surface and the ground when the vehicle is stationary, T is the driving torque applied to the rear wheels, δ is the steering angle of the rear wheels, ′ and ″ are the components of the driving torque of the rear wheels in the longitudinal and lateral directions of the vehicle when the steering angle δ is reached.

[0109] In the burnout condition, the front wheel brakes are clamped, applying driving torque to the rear wheels. Ignoring rolling resistance, when the rear wheels have no steering angle and the steering angle is 0°, the vehicle resistance F 阻 for:

[0110] F 阻 =f = μM 前

[0111] Vehicle driving force F 驱 for:

[0112] F 驱 =T≥μM 后

[0113] Where μ is the ground adhesion coefficient, M 前 is the vehicle front axle load, M 后 is the rear axle load of the vehicle.

[0114] In a vehicle, the center of mass approaches the center of the vehicle. At this time, the front and rear axle loads of the vehicle are relatively close. From the above formula, it can be seen that the driving force of the vehicle is likely to be greater than the vehicle resistance, that is, F 驱 >F 阻 , so that the vehicle moves forward under the push of the rear wheels, and it is impossible to achieve the effect of burning the tires in place.

[0115] When the steering angle of the rear wheel is δ, where δ is not 0°, the vehicle resistance F 阻 for:

[0116] F 阻 =f+Fsinδ=μM 前 +Fsinδ

[0117] Vehicle driving force F 驱 for:

[0118] F 驱 =Tcosδ≥μM 后 cosδ

[0119] Among them, F is the cornering force caused by the tire cornering stiffness. From the above formula, it can be seen that in the case of a rear wheel

[0120] In the case of independent steering, the vehicle resistance F 阻 By μM 前 Increase to μM 前+Fsinδ, vehicle driving force F 驱 By μM 后 Reduced to μM 后 cosδ. Therefore, when the left and right rear wheels of the vehicle are controlled to turn in different directions, the vehicle resistance can be significantly increased, and part of the rear wheel driving force is also distributed to the lateral direction of the vehicle due to the steering angle, and no driving torque is provided, which reduces the vehicle driving torque. As a result, the vehicle driving force will not be greater than the vehicle resistance, thus achieving the rear wheel burning action.

[0121] In some embodiments, the maximum driving torque of the left rear wheel and the right rear wheel is determined according to the vehicle resistance.

[0122] Specifically, according to the above formula, the vehicle resistance F 阻 After determination, if you want to achieve tire burnout, you need to make the vehicle driving force F 驱 Less than the vehicle resistance F 阻 , and the vehicle driving force F 驱 It can be adjusted by the driving torque T applied to the rear wheel, so according to the vehicle resistance F 阻 , the maximum driving torque applied to the rear wheels can be determined.

[0123] In this embodiment, by matching the maximum driving torque of the left rear wheel and the right rear wheel with the resistance of the entire vehicle, the vehicle can obtain sufficient power during the tire burning process, and the problem of vehicle loss of control due to excessive power is reduced, thereby improving the efficiency and safety of the tire burning process.

[0124] According to the vehicle burning tire method of the present application, when the burning tire function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; the driving torque is allocated to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle to burn the tires of the vehicle. By adding the rear wheel independent steering function, the embodiment of the present application can automatically control the left rear wheel and the right rear wheel of the vehicle to steer in different directions after the burning tire function is turned on, which can significantly increase the resistance of the whole vehicle, and part of the rear wheel driving force during the driving process is also divided into the lateral direction of the vehicle due to the steering angle, reducing the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, thereby realizing the burning tire action. The driver does not need to perform complicated operations during the burning tire process, which improves the burning tire efficiency.

[0125] In some embodiments, controlling the left rear wheel and the right rear wheel of the vehicle to steer in different directions respectively includes:

[0126] The left rear wheel is controlled to rotate in a first direction at a first steering angle, and the right rear wheel is controlled to rotate in a second direction at a second steering angle.

[0127] In this embodiment, the first direction and the second direction may be pre-set directions. When the first direction is the outside of the vehicle, the second direction is the inside of the vehicle; when the second direction is the outside of the vehicle, the first direction is the inside of the vehicle.

[0128] In this embodiment, the left rear wheel and the right rear wheel are respectively controlled to rotate in different directions at specific angles so that the rear wheel driving force is distributed to different lateral directions of the vehicle, thereby improving the stability of the tire burning process.

[0129] In this embodiment, the first steering angle and the second steering angle may also be preset angles. For example, different steering angles may be tested to determine the burnout effects corresponding to different steering angles during the test, and the appropriate first steering angle and second steering angle may be determined based on the burnout effects. The first steering angle and the second steering angle may be the same or different. By setting the steering angles of the left rear wheel and the right rear wheel to be the same, the force on the left and right sides of the vehicle may be more evenly applied, thereby improving the balance and stability of the vehicle during the burnout process.

[0130] In this embodiment, by controlling the left rear wheel and the right rear wheel to rotate in different directions at specific angles respectively, part of the rear wheel driving force during the driving process is also distributed to the lateral direction of the vehicle due to the steering angle, thereby reducing the driving torque of the entire vehicle. By controlling the steering angle, the stability and controllability of the tire burning process can be improved.

[0131] In some embodiments, before distributing the driving torque to the left rear wheel and the right rear wheel according to the depression depth of the power pedal of the vehicle, the method includes:

[0132] Prompt the driver that the left and right rear wheels have been turned;

[0133] And / or, prompting the driver to apply braking torque to the front wheels to complete.

[0134] In this embodiment, during the process of controlling the left rear wheel and the right rear wheel to steer in different directions, the steering angles of the two rear wheels can be monitored in real time. If the steering angles of the two rear wheels have reached the preset steering angles, it can be confirmed that the steering operation of the left rear wheel and the right rear wheel has been completed, and a prompt signal is generated to notify the driver that the steering operation has been successfully completed and the vehicle is ready to enter the next operation. The prompt signal can be transmitted to the driver in a variety of ways, such as through the flashing of an indicator light on the instrument panel, a sound prompt, or a text message displayed on the display screen of the driving assistance system.

[0135] In this embodiment, after the front wheel braking torque application operation is completed, a prompt signal may also be generated to notify the driver that the front wheel braking torque application has been successfully completed. The prompt signal may be transmitted to the driver in a variety of ways, such as by flashing an indicator light on the instrument panel, sound prompts, or text information displayed on the display screen of the driving assistance system.

[0136] In this embodiment, before distributing the driving torque according to the power pedal depression depth, the driver is prompted to complete the steering of the left and right rear wheels and the application of braking torque to the front wheels, thereby enhancing the driver's control over the vehicle status and further improving the safety of the burnout operation.

[0137] In some embodiments, before distributing the driving torque to the left rear wheel and the right rear wheel according to the depression depth of the power pedal of the vehicle, the method includes:

[0138] Increase the vehicle's suspension stiffness.

[0139] In this embodiment, the suspension system is an important part of the vehicle, which not only affects the comfort of the vehicle, but also plays a key role in the handling and stability of the vehicle. During the burnout process, the vehicle needs a higher suspension stiffness to cope with the additional torque and vibration generated when the tires spin.

[0140] In this embodiment, the vehicle is equipped with an adjustable suspension system, and the stiffness of the suspension can be increased by the suspension control module. For example, the vehicle is equipped with air suspension or electronically adjustable shock absorbers. In the burnout mode, a command can be sent to the suspension adjustment module to adjust the suspension stiffness to a higher level. For example, the air suspension system can increase the air pressure, and the electronically adjustable shock absorber can adjust the damping coefficient to increase the suspension stiffness of the vehicle.

[0141] In this embodiment, before distributing the driving torque according to the power pedal depression depth, by increasing the suspension stiffness of the vehicle, the influence of the driving wheel slip on the vehicle body posture can be reduced, so that the vehicle maintains a more stable posture, thereby improving the safety and stability of tire burnout.

[0142] In some embodiments, distributing driving torque to the left rear wheel and the right rear wheel according to the depression depth of the power pedal of the vehicle includes:

[0143] Detect the rotation angle of the front wheel;

[0144] When the turning angle of the front wheel is within a preset range, the driving torque is distributed to the left rear wheel and the right rear wheel according to the pedaling depth of the vehicle's power pedal.

[0145] In this embodiment, a sensor for monitoring the steering angle of the front wheels can be provided in the vehicle, and the rotation angle of the front wheels can be detected by the sensor. Alternatively, a steering wheel angle sensor can be provided in the vehicle, and the steering wheel angle sensor can be used to detect the rotation angle of the steering wheel to estimate the actual rotation angle of the front wheels. Of course, the rotation angle of the front wheels can also be detected by other methods, which are not limited in the embodiments of the present application.

[0146] After obtaining the turning angle of the front wheel, the turning angle of the front wheel can be compared with a preset range. The preset range is set according to the design and safety standards of the vehicle, and the purpose is to keep the vehicle in a relatively stable state during the burnout process. The preset range can be a range close to 0°, such as [-5°, 5°], [-10°, 10°], etc. If the turning angle of the front wheel is within the preset range, it means that the front wheel of the vehicle is in a relatively stable position and the next operation can be performed safely. If the turning angle of the front wheel exceeds the preset range, a warning signal can be issued to remind the driver to adjust the angle of the front wheel, or the steering wheel can be automatically adjusted to adjust the turning angle of the front wheel to within the preset range. After confirming that the turning angle of the front wheel is within the preset range, the driving torque can be allocated to the left rear wheel and the right rear wheel according to the pedaling depth of the vehicle's power pedal.

[0147] In this embodiment, by detecting the turning angle of the front wheels, the vehicle can maintain good directional stability during the burnout process, reduce vehicle loss of control due to excessive turning angle of the front wheels, and improve the safety of the burnout process.

[0148] In some embodiments, the method further comprises:

[0149] Obtaining the tread temperature of vehicle tires;

[0150] When the tread temperature is higher than the preset temperature, the burnout function stops.

[0151] In this embodiment, a temperature sensor can be installed inside the vehicle tire, and the sensor can be contact or non-contact, and can measure the temperature of the tire tread. For example, a small wireless temperature sensor can be installed inside the tire, and these sensors transmit temperature data via Bluetooth or other wireless technologies. Of course, the tread temperature of the vehicle tire can also be obtained by other means, and the embodiment of the present application is not limited to this.

[0152] In this embodiment, a tread temperature threshold, i.e., the above-mentioned preset temperature, can be preset. The preset temperature can be determined according to the material and design characteristics of the tire and can be a safe temperature upper limit. For example, the preset temperature can be set to 110°C, 120°C, etc. When the tread temperature of the tire exceeds the preset temperature, it may have an adverse effect on the performance and safety of the tire. Therefore, when the tread temperature is greater than the preset temperature, the safety mechanism can be triggered to stop the burnout function.

[0153] In some embodiments, when the tread temperature approaches a preset temperature, for example, when the tread temperature differs from the preset temperature by 5°C, a warning may be issued to the driver through the vehicle's driving assistance system. For example, an indicator light on the dashboard may flash, or the display screen of the driving assistance system may display a prompt message stating "The tread temperature is too high, please stop the burnout operation."

[0154] In some embodiments, when the burnout function is stopped, a warning may be issued to the driver through the vehicle's driving assistance system. For example, an indicator light on the dashboard may flash, or the display screen of the driving assistance system may display a prompt message stating that "tread temperature is too high, burnout operation has been stopped."

[0155] In this embodiment, the tread temperature of the vehicle tire is obtained, and the burnout function is stopped when the tread temperature exceeds a preset temperature, thereby reducing the risk of rubber aging, deformation, and even tire blowout due to excessive tire temperature, thereby not only protecting the tire but also improving the safety of the burnout.

[0156] In some embodiments, obtaining the tread temperature of a vehicle tire includes:

[0157] Collect the torque of the vehicle drive device, the wheel speed and the ambient temperature;

[0158] The torque, wheel speed and ambient temperature of the vehicle driving device are substituted into a preset tread temperature model to obtain the tread temperature of the vehicle tire.

[0159] In this embodiment, the driving device of the vehicle can be an engine or a motor, depending on the energy form used by the vehicle. When the vehicle performs a tire burnout operation, the torque output by the driving device will affect the friction between the tire and the ground, and thus affect the temperature of the tire. Therefore, the torque data of the driving device can be collected by the sensor of the vehicle power system to calculate the tread temperature of the vehicle tire.

[0160] The wheel speed is also a key factor affecting tire temperature. The faster the wheel speed, the more heat is generated by the friction between the tire and the ground. The wheel speed sensor of the vehicle can monitor the wheel speed in real time.

[0161] The ambient temperature also has a significant impact on the temperature of the tire. In a high temperature environment, the tire is more likely to heat up, while in a low temperature environment, the temperature of the tire will rise relatively slowly. Therefore, the current ambient temperature data can be collected through the vehicle's ambient temperature sensor.

[0162] In this embodiment, the tread temperature model may be a mathematical model established based on physical principles and experimental data, and can calculate the tread temperature of the tire according to parameters such as the torque of the vehicle drive device, the wheel speed and the ambient temperature. By substituting the collected torque, wheel speed and ambient temperature data into the tread temperature model, the tread temperature model will output the tread temperature of the current tire.

[0163] In this embodiment, the torque of the vehicle drive device, the wheel speed and the ambient temperature are collected and substituted into a preset tread temperature model, and the influence of various factors on the tire temperature is comprehensively considered to more accurately calculate the tread temperature.

[0164] The following describes the construction process of the tire tread temperature model through some embodiments. In the physical model of tire tread temperature, the tire tread temperature T t It is mainly affected by the following three factors:

[0165] Frictional heat: When the tread contacts the ground, the heat Q generated by the sliding friction between the tread and the ground s ;

[0166] Deformation heat generation: When the tire contacts the ground, the hysteresis energy loss Q generated by the internal periodic deformation caused by contact c ;

[0167] Heat conduction: Heat conduction between the tread and the road surface Q tr , heat conduction between the tire and the carcass, heat conduction between the tire and the atmosphere Q tc .

[0168] The heat generated by tire sliding friction in frictional heat generation Q s It is mainly determined by the slip force and slip speed between the tire and the road surface, and its expression is:

[0169] Q s =F sx V sx +F sy V sy

[0170] Among them, F sx Indicates the longitudinal slip force of the tire, F sy Indicates the lateral slip force of the tire, V sx Indicates the tire's longitudinal slip velocity, V sy Indicates the lateral slip speed of the tire.

[0171] Hysteresis energy loss Q generated by periodic deformation inside the tire during deformation heat generation c The longitudinal velocity V of the tire x and tire longitudinal force F x and the lateral force F y The influence is expressed as:

[0172] Q c =(p Fx V x F x +p Fy V x F y +p Fz V x F y )

[0173] Among them, F z is the vertical force of the tire, p Fx Indicates the longitudinal force efficiency factor of the tire, p Fy represents the lateral force efficiency factor of the tire, p Fz Represents the vertical force efficiency factor of the tire.

[0174] Heat exchange between tread and road surface during heat conduction Q tr , heat exchange between tread and atmosphere Q ta , and heat exchange Q between tread and carcass ca The expression is:

[0175] Q tr =h1(T t -T r )

[0176] Q ta =h2(T t -T a )

[0177] Q tc =h3(T t -T c )

[0178] Among them, T r represents the road surface temperature, T a represents the atmospheric temperature, T c represents the carcass temperature, h1 represents the heat exchange coefficient between the tread and the road, h2 represents the heat exchange coefficient between the tread and the atmosphere, and h3 represents the heat exchange coefficient between the tread and the carcass.

[0179] Combined with Fourier's law, the thermodynamic equilibrium equation of the tire, that is, the expression of the tread temperature model is:

[0180]

[0181] Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, M i Indicates the mass of gas in the tire, C t Indicates the heat capacity of the tread, C c represents the heat capacity of the carcass, c i represents the heat capacity of the gas in the tire, T t Indicates the tread temperature, T c Indicates the carcass temperature, T i represents the temperature of the gas inside the tire, t represents the time, Q s Indicates the heat generated by tire sliding friction, R t The distribution coefficient of the hysteresis energy loss generated by the periodic deformation inside the tire dissipated on the tread, Q c Indicates the hysteresis energy loss caused by the periodic deformation inside the tire, Q tr represents the heat exchange between the tread and the road surface, Q ta represents the heat exchange between the tread and the atmosphere, Q tc Indicates the heat exchange between the tread and the carcass, Q ca represents the heat exchange between the carcass and the surrounding environment, Q cg Indicates the heat conduction between the gas inside the tire and the tire body.

[0182] in:

[0183] Q ca =h4(T c -T a )

[0184] Q cg =h5(T c -T i )

[0185] h4 represents the heat exchange coefficient between the tire body and the atmosphere, h5 represents the heat exchange coefficient between the tire body and the gas inside the tire, T i Indicates the temperature of the gas inside the tire.

[0186] Many parameters involved in the above tread temperature model need to be confirmed by experiments. Since there are many parameters and the corresponding parameters are different under different working conditions, it is difficult to calibrate them one by one. Considering that the working conditions of the tire burning process are relatively special, the following assumptions can be made based on such working conditions to simplify the tread temperature model and reduce the parameters that need to be calibrated.

[0187] Since the vehicle body is stationary during the tire burning process, the longitudinal sliding speed V of the tire relative to the ground sx It can be obtained from the wheel rotation speed ω and the wheel radius R:

[0188] V sx=ω×R

[0189] Tire lateral sliding speed V sy is 0, that is:

[0190] V sy =0

[0191] Compared with the heat generated by friction, the heat converted into heat due to deformation can be ignored, that is:

[0192] Q c =0

[0193] Since the burning process lasts for a short time and air is a good thermal insulation material, the heat conduction between the tread and air and between the tire body and air is ignored during the burning process:

[0194] Q ta =0

[0195] Q ca =0

[0196] Due to the intense friction between the tire tread and the road surface during the burnout process, the road surface in contact with the tire heats up rapidly, which rapidly reduces the temperature difference between the tread and the road surface. Therefore, the heat conduction between the tread and the road surface can be ignored, that is:

[0197] Q tr =0

[0198] Based on the above assumptions, the tread temperature model can be simplified as follows:

[0199]

[0200] Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, C t Indicates the heat capacity of the tread, C c represents the heat capacity of the carcass, T t Indicates the tread temperature, T c represents the carcass temperature, t represents the time, Q s represents the heat generated by tire sliding friction, Q tc Indicates the heat exchange between the tread and the carcass, T i It represents the gas temperature inside the tire, and h4 represents the heat exchange coefficient between the tire body and the atmosphere.

[0201] Taking the vehicle's driving device as an electric motor as an example, the torque M applied by the motor to the wheel is d , wheel speed ω, vertical force F of the tire z The relationship between it and the road friction coefficient μ is:

[0202]

[0203] Among them, I y is the rolling inertia of the tire, represents the derivative of wheel speed ω with respect to time t, and R represents the wheel radius.

[0204] Combined with M d The tread temperature model can be further rewritten as follows:

[0205]

[0206] in, Indicates the tread temperature T t The derivative with respect to time t, Indicates the carcass temperature T c The derivative with respect to time t.

[0207] Tread temperature T t It can be expressed as:

[0208]

[0209] Among them, T t0 Indicates the initial tread temperature. When performing the first tire burnout operation, it can be assumed that T t0 =T a , M t , C t 、M c , C c , h3, h4 and other parameters can be determined according to the material properties or calibrated according to experimental data.

[0210] The vehicle tire burning method provided in the embodiment of the present application can be performed by a vehicle tire burning device. In the embodiment of the present application, the vehicle tire burning method is performed by a vehicle tire burning device as an example to illustrate the vehicle tire burning device provided in the embodiment of the present application.

[0211] The embodiment of the present application also provides a vehicle tire burning device.

[0212] like Figure 6 As shown, the vehicle tire burning device comprises:

[0213] The control module 610 is used to control the left rear wheel and the right rear wheel of the vehicle to steer in different directions respectively, and apply a braking torque to the front wheels of the vehicle when it is detected that the burnout function is turned on;

[0214] The tire burning module 620 is used to distribute driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle to burn the tires of the vehicle.

[0215] According to the vehicle burning tire device of the present application, when the burning tire function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; the driving torque is distributed to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle to burn the tires of the vehicle. By adding the rear wheel independent steering function, the embodiment of the present application can automatically control the left rear wheel and the right rear wheel of the vehicle to steer in different directions after the burning tire function is turned on, which can significantly increase the resistance of the whole vehicle, and part of the rear wheel driving force during the driving process is also distributed to the lateral direction of the vehicle due to the steering angle, reducing the driving torque of the whole vehicle. Combined with the braking torque of the front wheels, the driving force of the whole vehicle is less than the resistance of the whole vehicle, thereby realizing the burning tire action. The driver does not need to perform complicated operations during the burning tire process, which improves the burning tire efficiency.

[0216] The vehicle tire burning device in the embodiment of the present application can be an electronic device, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices other than a terminal. Exemplarily, the electronic device can be an on-board electronic device, a mobile Internet device (Mobile Internet Device, MID), a robot, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), an ECU (Electronic Control Unit, electronic control unit), an MCU (Microcontroller Unit, microcontroller unit) or other controllers, etc., and can also be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiment of the present application.

[0217] The vehicle tire burning device in the embodiment of the present application may be a device having an operating system. The operating system may be a Microsoft (Windows) operating system, an Android (Android) operating system, an IOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0218] In some embodiments, Figure 7 As shown, an embodiment of the present application further provides an electronic device 700, including a processor 701, the processor 701 being connected to a memory 702, the memory 702 storing a computer program that can be run on the processor 701, and the program, when executed by the processor 701, implements each process of the above-mentioned vehicle tire burning method embodiment, and can achieve the same technical effect, to avoid repetition, it will not be repeated here.

[0219] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0220] An embodiment of the present application further provides a vehicle, which includes the above-mentioned vehicle tire burning device or the above-mentioned electronic device.

[0221] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, each process of the above-mentioned vehicle tire burning method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0222] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0223] An embodiment of the present application also provides a computer program product, including a computer program, which implements the above-mentioned vehicle tire burning method when executed by a processor.

[0224] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

[0225] The embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned vehicle tire burning method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0226] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0227] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0228] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0229] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0230] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0231] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle tire burning method, characterized in that: include: When the burnout function is detected to be turned on, the left rear wheel and the right rear wheel of the vehicle are controlled to steer in different directions respectively, and a braking torque is applied to the front wheels of the vehicle; A driving torque is distributed to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle to perform tire burnout on the vehicle.

2. The method according to claim 1, characterized in that The vehicle includes a burnout function button; the method further includes: Whether the burnout function is turned on is detected according to the triggering condition of the burnout function button.

3. The method according to claim 1 or 2, characterized in that: The method of controlling the left rear wheel and the right rear wheel of the vehicle to steer in different directions respectively comprises: The left rear wheel is controlled to rotate in a first direction at a first steering angle, and the right rear wheel is controlled to rotate in a second direction at a second steering angle.

4. The method according to claim 3, characterized in that: When the first direction is the outer side of the vehicle, the second direction is the inner side of the vehicle; when the second direction is the outer side of the vehicle, the first direction is the inner side of the vehicle.

5. The method according to claim 3 or 4, characterized in that: The first steering angle and the second steering angle are the same.

6. The method according to any one of claims 1 to 5, characterized in that: Before distributing the driving torque to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle, the method includes: Prompt the driver that the steering of the left rear wheel and the right rear wheel is completed; And / or, prompting the driver to complete applying braking torque to the front wheels.

7. The method according to any one of claims 1 to 6, characterized in that: Before distributing the driving torque to the left rear wheel and the right rear wheel according to the stepping depth of the power pedal of the vehicle, the method includes: Increasing the suspension stiffness of the vehicle.

8. The method according to any one of claims 1 to 7, characterized in that: The method of allocating driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle includes: detecting a rotation angle of the front wheel; When the turning angle of the front wheel is within a preset range, the driving torque is distributed to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle.

9. The method according to any one of claims 1 to 8, characterized in that: The maximum driving torque of the left rear wheel and the right rear wheel is determined according to the whole vehicle resistance of the vehicle.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: Obtaining the tread temperature of the vehicle tire; When the tread temperature is greater than a preset temperature, the tire burning function is stopped.

11. The method according to claim 10, characterized in that The obtaining of the tread temperature of the vehicle tire comprises: collecting the torque of the vehicle driving device, the wheel speed and the ambient temperature; The torque of the vehicle driving device, the wheel speed and the ambient temperature are substituted into a preset tread temperature model to obtain the tread temperature of the vehicle tire.

12. The method according to claim 11, characterized in that The expression of the tread temperature model includes: Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, M i Indicates the mass of gas in the tire, C t Indicates the heat capacity of the tread, C c Represents the heat capacity of the carcass, C i represents the heat capacity of the gas in the tire, T t Indicates the tread temperature, T c Indicates the carcass temperature, T i represents the temperature of the gas inside the tire, t represents the time, Q s Indicates the heat generated by tire sliding friction, R t The distribution coefficient of the hysteresis energy loss generated by the periodic deformation inside the tire dissipated on the tread, Q c Indicates the hysteresis energy loss caused by the periodic deformation inside the tire, Q tr represents the heat exchange between the tread and the road surface, Q ta represents the heat exchange between the tread and the atmosphere, Q tc Indicates the heat exchange between the tread and the carcass, Q ca represents the heat exchange between the carcass and the surrounding environment, Q cg Indicates the heat conduction between the gas inside the tire and the tire body.

13. The method according to claim 11, characterized in that The expression of the tread temperature model includes: Among them, M t Indicates the tire tread quality, M c Indicates the carcass mass, C t Indicates the heat capacity of the tread, C c represents the heat capacity of the carcass, T t Indicates the tread temperature, T c represents the carcass temperature, t represents the time, Q s represents the heat generated by tire sliding friction, Q tc Indicates the heat exchange between the tread and the carcass, T i It represents the gas temperature inside the tire, and h4 represents the heat exchange coefficient between the tire body and the atmosphere.

14. A vehicle tire burning device, characterized in that: include: A control module, configured to control the left rear wheel and the right rear wheel of the vehicle to steer in different directions respectively, and to apply a braking torque to the front wheels of the vehicle when detecting that the burnout function is turned on; The tire burning module is used to distribute driving torque to the left rear wheel and the right rear wheel according to the pedaling depth of the power pedal of the vehicle, so as to burn the tires of the vehicle.

15. An electronic device comprising a processor, wherein the processor is connected to a memory, wherein the memory stores a computer program that can be run on the processor, wherein: When the processor executes the program, the method according to any one of claims 1 to 13 is implemented.

16. A vehicle, characterized in that: It includes the vehicle tire burning device as claimed in claim 14 or the electronic device as claimed in claim 15.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 13 is implemented.

18. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 13 is implemented.

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