Vehicle control method and vehicle

Abstract

The invention provides a vehicle control method and a vehicle. The method is applied to the field of vehicles. The method comprises the steps that under the condition that a vehicle is in an ejection mode, the vehicle type of the vehicle is obtained; under the condition that the vehicle type is a four-wheel-drive vehicle, based on the type of a driving system of the vehicle, a driving control strategy of the vehicle is determined, and the driving control strategy comprises switching of a driving mode or limiting of driving torque; and controlling the vehicle based on the driving control strategy. The method can reduce the impact on the transmission system in the vehicle so as to reduce the loss of the vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and more particularly, to a vehicle control method and a vehicle. Background Art

[0002] As cars become more common, users are increasingly demanding a higher level of driving experience. For example, when the vehicle is in ejection mode, users can experience a new type of driving experience.

[0003] In related technologies, when a vehicle is in launch mode, it will directly launch in response to the driver's driving instructions. This may damage the vehicle's transmission system and cause vehicle wear and tear. Therefore, how to reduce the impact on the vehicle's transmission system in launch mode and thus minimize vehicle wear and tear has become an urgent problem to be solved. Summary of the Invention

[0004] The present application provides a vehicle control method and a vehicle, wherein the method can reduce the impact on the transmission system in the vehicle to reduce the loss of the vehicle.

[0005] In a first aspect, a vehicle control method is provided, the method comprising:

[0006] When the vehicle is in the ejection mode, obtaining the vehicle type of the vehicle;

[0007] In a case where the vehicle type is a four-wheel drive vehicle, determining a driving control strategy for the vehicle based on a driving system type of the vehicle, the driving control strategy including switching a driving mode or limiting a driving torque;

[0008] The vehicle is controlled based on the driving control strategy.

[0009] The above technical solution, when the vehicle type is a four-wheel drive vehicle, determines the vehicle's drive control strategy and controls the vehicle based on the vehicle's drive system type; since switching drive modes or limiting drive torque can reduce vehicle slippage, the present application can improve the matching of drive control strategies with vehicles of different drive system types, thereby reducing the impact on the transmission system of the vehicle for vehicles of different drive system types. At the same time, when the vehicle is not slipping, the vehicle exerts the maximum driving capability of the entire vehicle, ensuring the driver's driving pleasure, thereby reducing the loss to the vehicle while ensuring the driver's driving experience.

[0010] In conjunction with the first aspect, in some possible implementations, determining the drive control strategy of the vehicle based on the drive system type of the vehicle includes:

[0011] In a case where the drive system type is intelligent four-wheel drive, determining the drive control strategy based on a locking type of a transfer case in the vehicle;

[0012] In a case where the driving system type is a part-time four-wheel drive, the driving control strategy is determined based on the driving mode of the vehicle.

[0013] The above technical solution, when the drive system type is intelligent four-wheel drive, determines the drive control strategy based on the locking type of the vehicle's transfer case. The locking type of the vehicle's transfer case can be used to determine whether the vehicle can achieve equal torque distribution. Furthermore, by matching the drive control strategy to different drive modes, the vehicle's slippage phenomenon is reduced, thereby minimizing the impact on the vehicle's transmission system. When the drive system type is part-time four-wheel drive, the drive control strategy is determined based on the vehicle's drive mode. Since part-time four-wheel drive vehicles have mechanical four-wheel drive capabilities, switching the vehicle's drive mode to four-wheel drive mode can ensure an even distribution of torque between the front and rear axles of the vehicle, avoiding vehicle slippage and thus reducing the impact on the vehicle's transmission system.

[0014] In combination with the first aspect and the above implementations, in some possible implementations, determining the drive control strategy based on the locking type of the transfer case in the vehicle includes:

[0015] When the locking type of the transfer case is a rigid type, determining the driving control strategy based on the driving mode of the vehicle;

[0016] When the lock type of the transfer case is a flexible type, the drive control strategy is determined based on a first torque and a second torque, wherein the first torque is obtained based on the engine torque and the second torque is obtained based on the rear wheel load.

[0017] In the above technical solution, when the lock type of the transfer case is rigid, the drive control strategy is determined based on the vehicle's drive mode. Since the vehicle has mechanical four-wheel drive capability, that is, the torque between the front and rear axles of the vehicle can be evenly distributed through mechanical hardware connection, the drive control strategy is determined based on the vehicle's drive mode, and the vehicle is controlled in a drive mode that can achieve mechanical four-wheel drive capability to avoid tire slip. When the lock type of the transfer case is flexible, the drive control strategy is determined based on the first torque and the second torque. The first torque is obtained based on the engine torque, and the second torque is obtained based on the rear wheel load. Since the friction plate group inside the vehicle's transfer case is connected by a flexible connection, the torque between the front and rear axles of the vehicle cannot be evenly distributed. The drive control strategy is determined based on the first torque and the second torque of the vehicle, that is, whether the vehicle needs to be torque-limited, while reducing the impact on the vehicle's transmission system and ensuring the driving experience of the user in the vehicle.

[0018] In combination with the first aspect and the above implementations, in some possible implementations, determining the drive control strategy based on the drive mode of the vehicle includes:

[0019] When the drive system type is the part-time four-wheel drive and the drive mode is the two-wheel drive mode, determining the switching drive mode as the drive control strategy, the switching drive mode is used to indicate switching from the two-wheel drive mode to the four-wheel drive mode;

[0020] When the drive system type is the intelligent four-wheel drive and the drive mode is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode, the switching drive mode is determined as the drive control strategy, wherein the switching drive mode is used to indicate switching from the drive mode to the target mode, and the target mode is the four-wheel drive high-speed mode or the four-wheel drive low-speed mode.

[0021] The above technical solution, when the drive system type is the part-time four-wheel drive and the drive mode is the two-wheel drive mode, determines the switching drive mode as the drive control strategy to control the vehicle to switch from the two-wheel drive mode to the four-wheel drive mode, which can equally divide the torque of the front and rear axles of the vehicle, reduce the vehicle slippage, and thus reduce the impact on the transmission system in the vehicle.

[0022] When the driving mode is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode, switching the driving mode is determined as the driving control strategy; since the four-wheel drive high-speed mode or the four-wheel drive low-speed mode in the intelligent four-wheel drive can achieve equal distribution of the torque between the front and rear axles of the vehicle, when the driving mode of the vehicle is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode, switching the driving mode is determined as the driving control strategy, and the switching driving mode indicates switching from the intelligent four-wheel drive mode or the two-wheel drive high-speed mode to the target mode, and the target mode is the four-wheel drive high-speed mode or the four-wheel drive low-speed mode, which can reduce the vehicle slipping phenomenon, while improving the vehicle safety and ensuring the driver's driving pleasure.

[0023] In combination with the first aspect and the above implementation manner, in some possible implementation manners, when the driving mode is the intelligent four-wheel drive mode, the method further includes:

[0024] Obtaining a first cumulative number of launch starts completed by the vehicle in the intelligent four-wheel drive mode;

[0025] The controlling of the vehicle based on the driving control strategy includes:

[0026] When the first accumulated number of times is less than or equal to a first preset number of times, outputting a prompt message, wherein the prompt message is used to prompt a user to manually switch from the intelligent four-wheel drive mode to the target mode;

[0027] When the first accumulated number of times is greater than a first preset number of times, the vehicle is controlled to switch from the intelligent four-wheel drive mode to the target mode.

[0028] The above technical solution outputs a prompt message when the first cumulative number is less than or equal to the first preset number, and controls the vehicle to switch from 4A to the target mode when the first cumulative number is greater than the first preset number; when the vehicle is in the intelligent four-wheel drive mode, the mode is switched only after the wheel speed sensor detects slippage, and the key to the launch start is the relatively short power burst period. When the mode switching condition is triggered, the tires may have idling and lost kinetic energy. By intervening in the drive mode before the launch start, switching from the intelligent four-wheel drive mode to the four-wheel drive high-speed mode or the four-wheel drive low-speed mode, the front and rear axle torque of the vehicle can be evenly distributed, reducing the slippage of the vehicle, and thereby reducing the impact on the transmission system in the vehicle.

[0029] In combination with the first aspect and the above implementations, in some possible implementations, determining the drive control strategy based on the first torque and the second torque includes:

[0030] obtaining a reference torque based on the second torque, wherein the reference torque is smaller than the second torque;

[0031] In a case where the first torque is greater than or equal to the reference torque, the limited driving torque is determined as the driving control strategy.

[0032] The above technical solution obtains a reference torque based on the second torque, and determines the limited driving torque as the drive control strategy when the first torque is greater than or equal to the reference torque; by comparing the first torque with the reference torque, when the first torque is greater than or equal to the reference torque, it indicates that there is a hidden danger of damaging the transmission system in the vehicle by launching the vehicle through the first torque. In this case, the engine torque is reduced to reduce the probability of vehicle slippage during launch, thereby reducing the impact on the transmission system in the vehicle.

[0033] In combination with the first aspect and the above implementation manner, in some possible implementation manners, when the first torque is greater than or equal to the reference torque, the method further includes:

[0034] Obtaining a second cumulative number of times the vehicle completes a launch control;

[0035] Based on the second accumulated number and the second torque, a limit torque of the engine is determined.

[0036] The above technical solution determines the engine's limiting torque through the second cumulative number of times the vehicle completes a launch and the second torque. Since the second torque is the torque threshold that the vehicle can safely withstand, the second torque is reduced by the cumulative number of times to obtain the limiting torque, thereby ensuring the safety of the vehicle.

[0037] In combination with the first aspect and the above implementations, in some possible implementations, determining the engine torque limit based on the second accumulated number and the second torque includes:

[0038] When the second accumulated number is less than a second preset number, the second torque is adjusted based on an adjustment coefficient of the second accumulated number to obtain the limiting torque, where the limiting torque is negatively correlated with the second accumulated number;

[0039] When the second accumulated number is greater than or equal to a second preset number, the second torque is adjusted based on a preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient.

[0040] In the above technical solution, when the second cumulative number is less than the second preset number, the second torque is adjusted according to the adjustment coefficient of the second cumulative number to obtain the limiting torque; when the second cumulative number is greater than or equal to the second preset number, the second torque is adjusted based on the preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient; the second torque is adjusted according to the second cumulative number to obtain the limiting torque, while ensuring that the vehicle can complete the launch start after the limiting torque is applied, and avoiding the vehicle from slipping, so as to reduce the impact on the transmission system in the vehicle, thereby reducing the loss of the vehicle.

[0041] In combination with the first aspect and the above implementation, in some possible implementations, obtaining a second cumulative number of times the vehicle completes a launch start includes:

[0042] Obtaining the number of ejection attempts and the ejection interval duration of the vehicle completing a launch start, where the ejection interval duration indicates the interval between the historical moment of the last launch start and the current moment;

[0043] When the ejection interval is shorter than a preset time, the ejection count is determined as the second cumulative count;

[0044] When the ejection interval duration is greater than or equal to a preset duration, an ejection number adjustment amount is determined based on the ejection interval duration, and the second cumulative number is determined based on the ejection number adjustment amount and the ejection number, and the second cumulative number is less than the ejection number.

[0045] The above technical solution determines the ejection frequency adjustment amount according to the ejection interval duration, and determines the second cumulative number based on the ejection frequency adjustment amount and the ejection frequency, where the second cumulative number is less than the ejection frequency. The above technical solution determines whether the vehicle's components have been restored by completing the ejection start interval duration, and thus determines the cumulative number of ejection starts according to the recovery status of the vehicle's components. This can increase the number of ejection starts performed by the driver while reducing vehicle wear and tear, thereby ensuring the driver's driving pleasure.

[0046] In a second aspect, a vehicle control device is provided, the vehicle control device comprising:

[0047] a communication module, configured to obtain a vehicle type of the vehicle when the vehicle is in a launch mode;

[0048] a processing module, configured to determine, when the vehicle is a four-wheel drive vehicle, a drive control strategy for the vehicle based on a drive system type of the vehicle, the drive control strategy including switching a drive mode or limiting a drive torque;

[0049] A processing module is used to control the vehicle based on the driving control strategy.

[0050] In conjunction with the second aspect, in some possible implementations, the processing module is specifically configured to:

[0051] In a case where the drive system type is intelligent four-wheel drive, determining the drive control strategy based on a locking type of a transfer case in the vehicle;

[0052] In a case where the driving system type is a part-time four-wheel drive, the driving control strategy is determined based on the driving mode of the vehicle.

[0053] In combination with the second aspect and the above implementation, in some possible implementations, the processing module is specifically configured to:

[0054] When the locking type of the transfer case is a rigid type, determining the driving control strategy based on the driving mode of the vehicle;

[0055] When the lock type of the transfer case is a flexible type, the drive control strategy is determined based on a first torque and a second torque, wherein the first torque is obtained based on the engine torque and the second torque is obtained based on the rear wheel load.

[0056] In combination with the second aspect and the above implementation, in some possible implementations, the processing module is specifically configured to:

[0057] When the driving mode is an intelligent four-wheel drive mode or a two-wheel drive high-speed mode, determining the switching driving mode as the driving control strategy;

[0058] The switching driving mode is used to indicate switching from the driving mode to a target mode, and the target mode is a four-wheel drive high-speed mode or a four-wheel drive low-speed mode.

[0059] In combination with the second aspect and the above implementation, in some possible implementations, when the driving mode is the intelligent four-wheel drive mode, the processing module is specifically configured to:

[0060] Obtaining a first cumulative number of launch starts completed by the vehicle in the intelligent four-wheel drive mode;

[0061] When the first accumulated number of times is less than or equal to a first preset number of times, outputting a prompt message, wherein the prompt message is used to prompt a user to manually switch from the intelligent four-wheel drive mode to the target mode;

[0062] When the first accumulated number of times is greater than a first preset number of times, the vehicle is controlled to switch from the intelligent four-wheel drive mode to the target mode.

[0063] In combination with the second aspect and the above implementation, in some possible implementations, the processing module is specifically configured to:

[0064] obtaining a reference torque based on the second torque, wherein the reference torque is smaller than the second torque;

[0065] In a case where the first torque is greater than or equal to the reference torque, the limited driving torque is determined as the driving control strategy.

[0066] In combination with the second aspect and the foregoing implementations, in some possible implementations, when the first torque is greater than or equal to the reference torque, the processing module is specifically configured to:

[0067] Obtaining a second cumulative number of times the vehicle completes a launch control;

[0068] Based on the second accumulated number and the second torque, a limit torque of the engine is determined.

[0069] In combination with the second aspect and the above implementation, in some possible implementations, the processing module is specifically configured to:

[0070] When the second accumulated number is less than a second preset number, the second torque is adjusted based on an adjustment coefficient of the second accumulated number to obtain the limiting torque, where the limiting torque is negatively correlated with the second accumulated number;

[0071] When the second accumulated number is greater than or equal to a second preset number, the second torque is adjusted based on a preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient.

[0072] In combination with the second aspect and the above implementation, in some possible implementations, the processing module is specifically configured to:

[0073] Obtaining the number of ejection attempts and the ejection interval duration of the vehicle completing a launch start, where the ejection interval duration indicates the interval between the historical moment of the last launch start and the current moment;

[0074] When the ejection interval is shorter than a preset time, the ejection count is determined as the second cumulative count;

[0075] When the ejection interval duration is greater than or equal to a preset duration, an ejection number adjustment amount is determined based on the ejection interval duration, and the second cumulative number is determined based on the ejection number adjustment amount and the ejection number, and the second cumulative number is less than the ejection number.

[0076] In a third aspect, a vehicle is provided, comprising a memory and a processor, wherein the memory is used to store executable program code; the processor is used to call and run the executable program code from the memory, so that the vehicle executes the vehicle control method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0077] In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the vehicle control method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0078] In a fifth aspect, a computer program product is provided, which includes: computer program code, which, when running on a computer, enables the computer to execute the vehicle control method in the above-mentioned first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Figure 1 This is a schematic diagram of a scenario of a vehicle control method provided by an embodiment of the present application;

[0080] Figure 2 is a schematic flow chart of a vehicle control method provided in an embodiment of the present application;

[0081] Figure 3 is a schematic flow chart of another vehicle control method provided in an embodiment of the present application;

[0082] Figure 4 is a schematic flow chart of another vehicle control method provided in an embodiment of the present application;

[0083] Figure 5 is a structural schematic diagram of a vehicle control device provided in an embodiment of the present application;

[0084] Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0085] The following will clearly and thoroughly describe the technical solutions in this application in conjunction with the accompanying drawings. In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more than two.

[0086] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0087] Figure 1 This is a scenario diagram of a vehicle control method provided in an embodiment of the present application.

[0088] For example, Figure 1 As shown, when vehicle 100 is in launch mode, the driver can fully accelerate while simultaneously pressing the brake pedal. During launch mode, the driver holds the accelerator pedal steady and releases the brake pedal, causing the vehicle to suddenly launch, achieving launch mode. Launch mode in vehicle 100 provides a powerful push-back feeling for the driver and passengers, creating a novel and exciting driving experience favored by young users or those seeking a thrilling driving experience.

[0089] Although launch mode provides a great driving experience, it places strict demands on the vehicle as a whole. In launch mode, the vehicle's drive wheels slip, and tire adhesion decreases after slipping. Specifically, during launch mode, as the vehicle moves rapidly, the vehicle's center of gravity shifts, and the adhesion of the vehicle's tires constantly changes. The slipping wheels may suddenly stop slipping and then continue to slip, resulting in a cycle of slip-stop-slip. This can have a significant impact on the vehicle's transmission system and cause significant damage to the vehicle. When the vehicle slips, the anti-friction force decreases, and the vehicle-road driving force decreases accordingly. A portion of the driving force is converted into heat energy and wasted, which also results in a loss of fuel for the vehicle as a whole.

[0090] In view of this, the present application provides a vehicle control method and a vehicle. In the present application, switching the driving mode or limiting the driving torque can reduce the slippage of the vehicle. By matching the driving control strategy with vehicles of different drive system types, the matching of the driving control strategy with the vehicle can be improved, thereby reducing the impact on the transmission system of the vehicle for vehicles of different drive system types. At the same time, when the vehicle is not slipping, the vehicle exerts the maximum driving capacity of the entire vehicle, ensuring the driver's driving pleasure, thereby reducing the loss to the vehicle while ensuring the driver's driving experience.

[0091] Figure 2 It is a schematic flow chart of a vehicle control method provided in an embodiment of the present application.

[0092] For example, Figure 2 The method shown can be executed by a vehicle controller or chip of the vehicle.

[0093] For example, Figure 2 As shown, the vehicle control method 200 includes steps S210 - S230 .

[0094] S210: When the vehicle is in the ejection mode, obtain the vehicle type of the vehicle.

[0095] For example, launch mode in a vehicle is a special launching technology that provides greater torque and speed, allowing the vehicle to quickly reach high-speed driving. For example, before the vehicle starts, the accelerator pedal is fully opened while the brake pedal is pressed. When the vehicle starts, the accelerator pedal is held down and the brake pedal is released, and the vehicle suddenly launches. In this mode, the driver feels a powerful push back, which has been widely sought after and loved by users.

[0096] Optionally, the vehicle type of the vehicle can be a two-wheel drive vehicle or a four-wheel drive vehicle. The vehicle type of the vehicle can be determined according to actual conditions and is not specifically limited here.

[0097] For example, a two-wheel drive vehicle's engine power is only transmitted to two wheels (front or rear); the other two wheels are driven wheels and have no driving force. A four-wheel drive vehicle's engine power is transmitted to all four wheels simultaneously, achieving front and rear axle power distribution through a split-drive state.

[0098] For example, drive configuration information is obtained from the vehicle, the drive configuration information being used to store the vehicle's drive type, and the vehicle type is determined based on the drive configuration information. Alternatively, a drive type code is obtained from the vehicle, and the vehicle type is determined based on the drive type code. For example, if the drive type code obtained for the vehicle is 0x00, the vehicle type is determined to be a two-wheel drive vehicle.

[0099] Exemplarily, in the case where the vehicle type is a two-wheel drive vehicle, the number of launch starts of the vehicle is obtained. When the number of launch starts is less than or equal to the preset number of starts for the two-wheel drive vehicle, a prompt message is output, and the prompt message is used to prompt and recommend stopping the launch start; when the number of launch starts is greater than the preset number of starts, a prompt message is output along with an alarm, and the prompt message is used to prompt and recommend immediately stopping the launch start.

[0100] Optionally, the preset number of starts may be 1, 2, etc., which is not specifically limited here.

[0101] For example, when the vehicle type is a two-wheel drive vehicle, the number of launch starts of the vehicle is obtained. When the number of launch starts is less than or equal to 2, the output prompt message is "Hello, to ensure the safety of the vehicle, it is recommended that you stop the launch start"; when the number of launch starts is greater than 2, the output prompt message is "Hello, to ensure the safety of the vehicle, please stop the launch start immediately", and an alarm is accompanied during the output of the prompt message.

[0102] S220 : When the vehicle type is a four-wheel drive vehicle, determine a driving control strategy for the vehicle based on the driving system type of the vehicle.

[0103] Exemplary drive control strategies include switching drive modes or limiting drive torque. Drive control strategies are used to reduce vehicle slip during launch, thereby reducing the impact of launch on the drivetrain and ultimately reducing vehicle losses. The drive switching mode indicates switching from the current drive mode to a drive mode that reduces vehicle slip. Limiting drive torque indicates limiting the vehicle's engine torque, proactively intervening in torque distribution and reducing vehicle slip after launch.

[0104] Optionally, the drive system type in the vehicle can be at least one of part-time four-wheel drive, full-time four-wheel drive and intelligent four-wheel drive.

[0105] For example, when the vehicle's drive system type is any one of part-time four-wheel drive, full-time four-wheel drive, and intelligent four-wheel drive, the drive system type is the vehicle's drive system type. When the vehicle's drive system type includes at least two of part-time four-wheel drive, full-time four-wheel drive, and intelligent four-wheel drive, the currently operating drive system type is the vehicle's drive system type. The vehicle's drive system type can be determined based on actual circumstances and is not specifically limited here.

[0106] For example, part-time four-wheel drive can be manually switched between two-wheel drive and four-wheel drive modes; full-time four-wheel drive always maintains power output to the wheels; and intelligent four-wheel drive automatically adjusts between two-wheel drive and four-wheel drive mode based on the vehicle's road conditions. When the vehicle's drive system type is full-time four-wheel drive, the control maintains the current operating mode.

[0107] For example, when the drive system type is intelligent four-wheel drive, the drive control strategy is determined based on the locking type of the transfer case in the vehicle; when the drive system type is part-time four-wheel drive, the drive control strategy is determined based on the vehicle's drive mode.

[0108] Optionally, the driving modes of the part-time four-wheel drive vehicle include a two-wheel drive mode and a four-wheel drive mode.

[0109] For example, the transfer case in an intelligent four-wheel drive vehicle is a mechanical device responsible for distributing the engine power to the front and rear axles of the vehicle. The transfer case can automatically adjust the power distribution ratio according to the road conditions of the vehicle through an electronic control unit, allowing the vehicle to dynamically switch between two-wheel drive mode and four-wheel drive mode, thereby realizing real-time intelligent distribution of torque.

[0110] Optionally, the locking types of the transfer case include rigid type and flexible type. The rigid type refers to the mechanical engagement of the mechanical lock replacing the friction transmission of the multi-plate clutch, which realizes the rigid distribution of power between the front and rear axles when needed. It is a key structure that takes into account both intelligent dynamic adjustment and reliability under extreme working conditions. The flexible type refers to the four-wheel drive intervention through the friction plate inside the transfer case. The friction plate group is a flexible connection, and it is impossible to achieve rigid locking of the front and rear axles through hardware. Moreover, its special structure means that it cannot achieve equal torque distribution between the front and rear axles under the launch start condition, and additional problems such as friction plate burning will also occur. The locking type of the transfer case directly affects the vehicle's ability to escape in extreme environments.

[0111] Specifically, if the vehicle type is a four-wheel drive vehicle, the vehicle's drive system type is obtained. If the vehicle's drive system type is intelligent four-wheel drive, based on the locking type of the transfer case in the vehicle, it is determined whether the vehicle can achieve equal torque distribution, and then the vehicle's drive control strategy is determined. If the vehicle's drive system type is part-time four-wheel drive, based on the vehicle's drive mode, it is determined whether the vehicle's drive mode is a four-wheel drive mode, and then the vehicle's drive control strategy is determined.

[0112] The above technical solution, when the drive system type is intelligent four-wheel drive, determines the drive control strategy based on the locking type of the vehicle's transfer case. The locking type of the vehicle's transfer case can be used to determine whether the vehicle can achieve equal torque distribution. Furthermore, by matching the drive control strategy to different drive modes, the vehicle's slippage phenomenon is reduced, thereby minimizing the impact on the vehicle's transmission system. When the drive system type is part-time four-wheel drive, the drive control strategy is determined based on the vehicle's drive mode. Since part-time four-wheel drive vehicles have mechanical four-wheel drive capabilities, switching the vehicle's drive mode to four-wheel drive mode can ensure an even distribution of torque between the front and rear axles of the vehicle, avoiding vehicle slippage and thus reducing the impact on the vehicle's transmission system.

[0113] For example, when the vehicle's drive system type is part-time four-wheel drive, the vehicle's drive mode is obtained; when the vehicle's drive mode is four-wheel drive mode, since the lock type of the transfer case in the part-time four-wheel drive vehicle is a rigid type, the part-time four-wheel drive vehicle has mechanical four-wheel drive capability, that is, when the part-time four-wheel drive vehicle is in four-wheel drive mode, the front and rear axle torque of the vehicle can be evenly distributed through mechanical hardware connection, and tire slippage almost does not occur. Therefore, when the part-time four-wheel drive vehicle is in four-wheel drive mode, it is sufficient to maintain the current mode for launch start. When the vehicle's drive mode is two-wheel drive mode, switching the drive mode is determined as the drive control strategy, that is, switching from two-wheel drive mode to four-wheel drive mode.

[0114] Exemplarily, when the vehicle's drive system type is intelligent four-wheel drive, the locking type of the transfer case in the vehicle is determined. When the locking type of the transfer case is a rigid type, the drive control strategy is determined based on the vehicle's drive mode. When the locking type of the transfer case is a flexible type, the drive control strategy is determined based on the first torque and the second torque. The first torque is obtained based on the engine torque, and the second torque is obtained based on the rear wheel load.

[0115] If the transfer case is locked in a rigid mode, the vehicle has mechanical four-wheel drive capability, meaning that the mechanical hardware connection ensures even torque distribution between the front and rear axles. By controlling the vehicle's drive mode to a four-wheel drive mode, tire slippage can be avoided.

[0116] Optionally, if the transfer case is locked in a rigid manner, i.e., the intelligent four-wheel drive transfer case has a mechanical lock, the vehicle's drive modes include 2-High (2H), intelligent four-wheel drive (4AUTO, 4A), four-wheel drive high (4H), and four-wheel drive low (4L). It is understood that when the vehicle is in 4H or 4L, torque can be evenly distributed between the front and rear axles.

[0117] When the vehicle is in 4A mode, the mode switch is performed only after the wheel speed sensor detects slippage. The key to launch control is the relatively short power burst period (e.g., 0-0.5 seconds). When the mode switch condition is triggered, the tires may have already lost kinetic energy by idling. Therefore, the mode switch in 4A mode has a hysteresis. By intervening before the launch control and switching the vehicle mode to 4H or 4L, the probability of slippage during launch control can be reduced.

[0118] When the transfer case's locking type is flexible, the vehicle's four-wheel drive system achieves torque distribution through the transfer case's internal friction plate group. The friction plate group is a flexible connection, and it is impossible to achieve rigid locking of the front and rear axles through hardware. Under the vehicle's launch control condition, torque distribution between the front and rear axles cannot be achieved, and additional problems such as friction plate ablation may occur. To ensure vehicle safety, the vehicle's torque is calculated to determine the maximum driving capacity of the vehicle without slipping, and then the vehicle's drive control strategy is determined, thus ensuring both the safety of the transmission system and the user's driving experience.

[0119] Specifically, if the transfer case is locked in a flexible manner, the vehicle's first torque is obtained. This first torque indicates the torque that the vehicle can transmit to the drive wheels without considering rolling friction, i.e., the theoretically transferable torque. The second torque indicates the actual driving torque of the vehicle's rear axle after accounting for hybrid friction, i.e., the vehicle's safe torque threshold. The vehicle's drive control strategy is then determined based on the first and second torques.

[0120] For example, the first torque may be the product of the maximum torque of the engine, the transmission speed ratio, and the transfer case speed ratio. The first torque may be expressed as follows:

[0121] K1=T×I 变 ×I 分

[0122] Wherein, K1 represents the first torque, T represents the engine torque (or the maximum engine torque), I 变 Indicates the transmission speed ratio, I 分 Indicates the transfer case speed ratio.

[0123] For example, the second torque may be the ratio of the product of the vehicle's rear wheel load, the acceleration of gravity, and the tire rolling radius to the final reduction ratio. The expression for the second torque may be as follows:

[0124] K2=(G×g×R) / I 主

[0125] Where K2 represents the second torque, G represents the rear wheel load of the vehicle, g represents the acceleration of gravity, R represents the tire rolling radius, and I 主 Indicates the rear final drive ratio.

[0126] It is understandable that by comparing the first torque with the second torque, it can be determined whether directly outputting the torque will damage the friction plate in the transfer case, and then whether the vehicle needs to be torqued to reduce the impact of the launch on the transmission system in the vehicle.

[0127] In the above technical solution, when the lock type of the transfer case is rigid, the drive control strategy is determined based on the vehicle's drive mode. Since the vehicle has mechanical four-wheel drive capability, that is, the torque between the front and rear axles of the vehicle can be evenly distributed through mechanical hardware connection, the drive control strategy is determined based on the vehicle's drive mode, and the vehicle is controlled in a drive mode that can achieve mechanical four-wheel drive capability to avoid tire slip. When the lock type of the transfer case is flexible, the drive control strategy is determined based on the first torque and the second torque. The first torque is obtained based on the engine torque, and the second torque is obtained based on the rear wheel load. Since the friction plate group inside the vehicle's transfer case is connected by a flexible connection, the torque between the front and rear axles of the vehicle cannot be evenly distributed. The drive control strategy is determined based on the first torque and the second torque of the vehicle, that is, whether the vehicle needs to be torque-limited, while reducing the impact on the vehicle's transmission system and ensuring the driving experience of the user in the vehicle.

[0128] In one example, when the locking type of the transfer case is a rigid type, the driving mode of the vehicle is obtained; when the driving mode is an intelligent four-wheel drive mode or a two-wheel drive high-speed mode, switching the driving mode is determined as a driving control strategy.

[0129] It should be noted that the "drive mode switch" indicates a switch from the drive mode to the target mode, which is either the 4WD high-speed mode or the 4WD low-speed mode. It is understood that since the 4H and 4L transfer cases with mechanical locks in the intelligent 4WD can evenly distribute torque between the front and rear axles, switching the vehicle from 2H or 4A to 4H or 4L when the vehicle is in 2H or 4A can reduce the probability of the vehicle slipping.

[0130] Optionally, when the vehicle's driving mode is 4A or 2H, switching to 4H is determined as the driving control strategy; or, when the vehicle's driving mode is 4A or 2H, switching to 4L is determined as the driving control strategy. Preferably, the dynamic distribution of torque in 4H can quickly suppress slippage, allowing power to be more efficiently transmitted to the ground, avoiding idling and wasting power, that is, avoiding slippage.

[0131] When the vehicle is in 4A mode, the mode switch is initiated only after the wheel speed sensors detect slip. Launch control relies on a short burst of power, and by the time the mode switch condition is triggered, the tires may have already spun and lost kinetic energy. Therefore, mode switching in 4A mode has a lag, requiring intervention to switch the vehicle mode to 4H or 4L before launch control is initiated.

[0132] The above technical solution determines switching the driving mode as the driving control strategy when the driving mode is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode; since 4H or 4L in the intelligent four-wheel drive can achieve equal distribution of the torque between the front and rear axles of the vehicle, when the driving mode of the vehicle is 4A or 2H, switching the driving mode is determined as the driving control strategy, and the switching driving mode indication is switched from 4A or 2H to the target mode, and the target mode is 4H or 4L, which can reduce the phenomenon of vehicle slipping, and ensure the driving pleasure of the driver while improving the safety of the vehicle.

[0133] In another example, when the transfer case is locked in a flexible manner, a first torque and a second torque are obtained, and a reference torque is obtained based on the second torque, where the reference torque is less than the second torque. When the first torque is greater than or equal to the reference torque, limiting the driving torque is determined as the driving control strategy.

[0134] Exemplarily, the second torque indicates a torque threshold that the vehicle can safely withstand. By adjusting the second torque to obtain a reference torque, making the reference torque smaller than the second torque, and then comparing the reference torque with the first torque, the safety of the vehicle can be ensured.

[0135] For example, the product of the second torque and the adjustment coefficient is determined as the reference torque, so that the reference torque is less than the second torque. Optionally, the adjustment coefficient can be 90%, 92%, etc. The adjustment coefficient can be determined according to actual conditions and is not specifically limited here.

[0136] Specifically, when determining the first torque and the second torque, the product of the second torque and the adjustment coefficient is determined as the reference torque. A determination is then made as to whether the first torque is less than the reference torque. If the first torque is less than the reference torque, and if the first torque output is determined to be within the vehicle's safety torque threshold and will not cause impact or damage to the vehicle, the first torque is determined as the engine's limiting torque. If the first torque is greater than or equal to the reference torque, the limited driving torque is determined as the drive control strategy to limit the engine's torque by limiting the driving torque to ensure vehicle safety. Furthermore, when the vehicle's drive control strategy is to limit the driving torque, the engine's limiting torque can be determined based on the second torque. For example, 80% of the second torque can be determined as the engine's limiting torque.

[0137] The above technical solution obtains a reference torque based on the second torque, and determines the limited driving torque as the drive control strategy when the first torque is greater than or equal to the reference torque; by comparing the first torque with the reference torque, when the first torque is greater than or equal to the reference torque, it indicates that there is a hidden danger of damaging the transmission system in the vehicle by launching the vehicle through the first torque. In this case, the engine torque is reduced to reduce the probability of vehicle slippage during launch, thereby reducing the impact on the transmission system in the vehicle.

[0138] Furthermore, when the driving control strategy of the vehicle is to limit the driving torque, it is also necessary to determine the limit torque of the engine.

[0139] In one example, when the driving control strategy of the vehicle is to limit the driving torque, the reference torque is determined as the limited torque of the engine, thereby controlling the vehicle to perform a launch start.

[0140] In another example, when the driving control strategy of the vehicle is to limit the driving torque, a second cumulative number of times the vehicle completes a launch operation is obtained, and the limited torque of the engine is determined based on the second cumulative number and the second torque.

[0141] Exemplarily, the second accumulated number may be the number of times the vehicle is launched, or the number of times the number of launches is counted. The second accumulated number may be determined based on actual conditions and is not specifically limited herein.

[0142] When the interval between launch attempts is long, some vehicle components can recover, for example, by reducing component temperatures. This recovery can reduce vehicle damage. If the number of launch attempts is limited, the number of launch attempts can be accumulated based on the interval between launch attempts, minimizing vehicle damage while ensuring driving pleasure.

[0143] Exemplarily, the number of ejection times and the ejection interval duration of the vehicle completing the ejection start are obtained, and the ejection interval duration indicates the interval duration between the historical moment of the last ejection start and the current moment; when the ejection interval duration is less than the preset duration, the number of ejections is determined as the second cumulative number; when the ejection interval duration is greater than or equal to the preset duration, the ejection number adjustment amount is determined based on the ejection interval duration, and the second cumulative number is determined based on the ejection number adjustment amount and the number of ejections, and the second cumulative number is less than the ejection number.

[0144] Optionally, the preset duration may be 10 minutes, 15 minutes, 20 minutes, etc. The preset duration may be determined based on actual conditions and is not specifically limited here.

[0145] Exemplarily, the ejection count is used to indicate the second cumulative count of the last ejection start of the vehicle plus one.

[0146] Exemplarily, if the ejection number adjustment amount is a negative value, the ejection number is adjusted by the ejection number adjustment amount, and the obtained second cumulative number is less than the ejection number.

[0147] Exemplarily, the preset duration is 10 minutes. The number of ejection attempts and the ejection interval duration for the vehicle to complete ejection start are obtained. When the ejection interval duration is less than 10 minutes, the number of ejection attempts is determined as the second cumulative number. When the ejection interval duration is greater than or equal to 10 minutes, the ratio of the ejection interval duration to 10 is determined, and the inverse of the ratio rounded down is used as the ejection number adjustment amount. Based on the ejection number adjustment amount and the ejection number, the second cumulative number is obtained. When the sum of the ejection number adjustment amount and the ejection number is greater than 0, the sum of the ejection number adjustment amount and the ejection number is determined as the second cumulative number; when the sum of the ejection number adjustment amount and the ejection number is less than or equal to 0, 0 is used as the second cumulative number.

[0148] For example, if the ejection number is 1 and the interval time is 22 minutes, the second cumulative number is determined to be 0. Alternatively, if the ejection number is 3 and the interval time is 12 minutes, the second cumulative number is determined to be 2.

[0149] The above technical solution determines the ejection frequency adjustment amount according to the ejection interval duration, and determines the second cumulative number based on the ejection frequency adjustment amount and the ejection frequency, where the second cumulative number is less than the ejection frequency. The above technical solution determines whether the vehicle's components have been restored by completing the ejection start interval duration, and thus determines the cumulative number of ejection starts according to the recovery status of the vehicle's components. This can increase the number of ejection starts performed by the driver while reducing vehicle wear and tear, thereby ensuring the driver's driving pleasure.

[0150] For example, the engine's torque limit is used to indicate an upper limit of the engine's output torque. When the engine's output torque is less than or equal to the engine's torque limit, the vehicle's safety can be ensured.

[0151] It is understandable that the more times the launch is performed in a short period of time, the greater the damage to the vehicle. In order to ensure the safety of the vehicle, the greater the torque limit on the engine is, the second accumulated number and the second torque can be used to determine the vehicle's torque limit within the safety range.

[0152] For example, the second cumulative number is negatively correlated with the limit torque. The greater the second cumulative number, the smaller the limit torque. For example, if the first cumulative number is 1, the limit torque is 85% of the second torque; if the second cumulative number is 2, the limit torque is 80% of the second torque, and so on, until the limit torque no longer enables the vehicle to launch.

[0153] The above technical solution determines the engine's limiting torque through the second cumulative number of times the vehicle completes a launch and the second torque. Since the second torque is the torque threshold that the vehicle can safely withstand, the second torque is reduced by the cumulative number of times to obtain the limiting torque, thereby ensuring the safety of the vehicle.

[0154] In order to ensure that the impact on the vehicle's transmission system is reduced while the vehicle completes the launch, the vehicle engine can be torque-limited to prevent the vehicle from slipping while ensuring that the limited torque can enable the vehicle to complete the launch.

[0155] Exemplarily, the vehicle's driving control strategy is to limit the driving torque. When the second cumulative number is less than the second preset number, the second torque is adjusted according to the adjustment coefficient of the second cumulative number to obtain the limiting torque, and the limiting torque is negatively correlated with the second cumulative number; when the second cumulative number is greater than or equal to the second preset number, the second torque is adjusted based on the preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient.

[0156] Optionally, the second preset number may be 4, 5, etc. The second preset number may be determined according to actual conditions and is not specifically limited here.

[0157] For example, if the second cumulative number is less than the second preset number, the limit torque is negatively correlated with the second cumulative number, and the adjustment coefficient is negatively correlated with the second cumulative number. For example, if the second cumulative number is 1, the adjustment coefficient is 0.9; if the second cumulative number is 2, the adjustment coefficient is 0.8, and so on. Furthermore, the preset coefficient is less than or equal to the adjustment coefficient.

[0158] For example, if the transfer case is locked in a flexible manner, the first and second torques are obtained, and the product of the second torque and 0.9 is determined as the reference torque. If the first torque is less than the reference torque, the engine limit torque is determined as the first torque.

[0159] When the first torque is greater than or equal to the reference torque, a second cumulative number of times the vehicle completes a launch control is obtained, assuming the second preset number is 5. When the second cumulative number is 1, the adjustment coefficient is 0.9, and the product of the second torque and 0.9 is determined as the engine's limit torque; when the second cumulative number is 2, the adjustment coefficient is 0.8, and the product of the second torque and 0.8 is determined as the engine's limit torque; when the second cumulative number is 3, the adjustment coefficient is 0.65, and the product of the second torque and 0.65 is determined as the engine's limit torque; when the second cumulative number is 4, the adjustment coefficient is 0.5, and the product of the second torque and 0.5 is determined as the engine's limit torque.

[0160] When the second cumulative number is greater than 4, the preset coefficient is 0.5, and the product of the second torque and 0.5 is determined as the engine's limit torque. It will be understood that because the preset coefficient is less than or equal to the adjustment coefficient, the engine's limit torque when the second cumulative number is less than 5 (the second preset number) is necessarily greater than or equal to the engine's limit torque when the second cumulative number is greater than or equal to 5.

[0161] For example, in order to ensure that the vehicle can complete the launch after limiting the torque of the engine, the product of the preset coefficient and the second torque is a limiting torque that can definitely complete the launch.

[0162] In the above technical solution, when the second cumulative number is less than the second preset number, the second torque is adjusted according to the adjustment coefficient of the second cumulative number to obtain the limiting torque; when the second cumulative number is greater than or equal to the second preset number, the second torque is adjusted based on the preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient; the second torque is adjusted according to the second cumulative number to obtain the limiting torque, while ensuring that the vehicle can complete the launch start after the limiting torque is applied, and avoiding the vehicle from slipping, so as to reduce the impact on the transmission system in the vehicle, thereby reducing the loss of the vehicle.

[0163] S230: Control the vehicle based on the driving control strategy.

[0164] For example, in the case where the vehicle type is a four-wheel drive vehicle, the vehicle's drive control strategy is determined according to the vehicle's drive system type, and the vehicle is controlled according to the drive control strategy to avoid slipping during launch, reduce the impact on the vehicle's transmission system, and thereby reduce vehicle losses.

[0165] For example, if the vehicle's drive system type is part-time four-wheel drive, the vehicle's drive mode is obtained; when the vehicle's drive mode is four-wheel drive, the mechanical hardware connection can achieve even torque distribution between the front and rear axles of the vehicle, almost eliminating tire slip, and the current mode can be maintained for launch control. When the vehicle's drive mode is two-wheel drive, switching the drive mode is determined as the drive control strategy, and the vehicle is controlled to switch from two-wheel drive mode to four-wheel drive mode.

[0166] Specifically, the system obtains the cumulative number of times the vehicle has completed a launch start. If the cumulative number is less than or equal to a preset number, a prompt message is output to prompt the user to manually switch from two-wheel drive mode to four-wheel drive mode. If the cumulative number is greater than the preset number, the vehicle is automatically controlled to switch from two-wheel drive mode to four-wheel drive mode.

[0167] Optionally, the cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be repeated here.

[0168] Optionally, the preset number of times may be 2, 3, etc. The preset number of times may be determined according to actual conditions and is not specifically limited here.

[0169] Assume the preset count is 2. When the cumulative count reaches 1, the prompt message "Hello, please switch to four-wheel drive mode immediately" is output. This prompt message lasts for 1 minute and is accompanied by three alarm sounds. When the cumulative count reaches 2, the prompt message "Hello, please switch to four-wheel drive mode immediately" is output. This prompt message lasts for 3 minutes and is accompanied by a continuous alarm sound. When the cumulative count reaches 3, the part-time four-wheel drive system automatically requests a mode change, controlling the vehicle to automatically switch from two-wheel drive mode to four-wheel drive mode.

[0170] For example, if the vehicle's drive system type is intelligent four-wheel drive and the transfer case's locking type is rigid, a drive control strategy is determined based on the vehicle's drive mode and the vehicle is controlled. If the transfer case's locking type is flexible, a drive control strategy is determined based on the first torque and the second torque. If the drive control strategy is limited drive torque, the vehicle is controlled based on the engine's limited torque.

[0171] When the driving system type of the vehicle is intelligent four-wheel drive and the locking type of the transfer case of the intelligent four-wheel drive is a rigid type, the driving mode of the vehicle is determined.

[0172] When the vehicle's drive mode is in 2H, the core of launch control is to efficiently convert engine power into driving force by maximizing tire grip. However, 2H's two-wheel drive cannot effectively handle the traction requirements of high torque output, which will increase power loss caused by vehicle slippage and impact on the vehicle's drive system. Therefore, to ensure vehicle safety and reduce impact on the vehicle's drive system, switching drive modes is established as the vehicle's drive control strategy.

[0173] The vehicle control strategy based on the vehicle's drive control strategy is specifically as follows: the cumulative number of times the vehicle has completed a launch control is obtained. If the cumulative number is less than or equal to a preset number, a prompt message is output to prompt the user to manually switch the vehicle from 2H to 4H. If the cumulative number is greater than the preset number, the vehicle is automatically controlled to switch from 2H to 4H.

[0174] Optionally, the cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be repeated here.

[0175] For example, the preset number of times is 2. When the cumulative number reaches 1, the output message is "Hello, please switch to 4H immediately". The prompt message lasts for 1 minute and is accompanied by three alarm sounds. When the cumulative number reaches 2, the output message is "Hello, please switch to 4H immediately". The prompt message lasts for 3 minutes and is accompanied by a continuous alarm sound. When the cumulative number reaches 3, the vehicle is controlled to switch from 2H to 4H.

[0176] When the vehicle's driving mode is 4A, the first cumulative number of times the vehicle completes launch control in the intelligent four-wheel drive mode is obtained; when the first cumulative number is less than or equal to the first preset number, a prompt message is output, and the prompt message is used to prompt the user to manually switch from the intelligent four-wheel drive mode to the target mode; when the first cumulative number is greater than the first preset number, the vehicle is controlled to switch from the intelligent four-wheel drive mode to the target mode.

[0177] Optionally, the first cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be described in detail here.

[0178] Optionally, the first preset number of times may be 1, 2, etc. The first preset number of times may be determined according to actual conditions and is not specifically limited here.

[0179] Optionally, the target mode may be 4H or 4L. Preferably, the target mode is 4H.

[0180] Taking the target mode 4H as an example, the vehicle control based on the vehicle driving control strategy is explained.

[0181] When the vehicle is in launch mode, the transfer case friction plates are rapidly compressed to maximize the transfer case's flexibility. Furthermore, when the first cumulative count reaches 1 (the first preset count), a prompt message is output: "Hello, please switch to 4H immediately." This prompt message lasts for 3 minutes and is accompanied by a continuous alarm. When the cumulative count reaches 2, the vehicle is controlled to switch from 4A to 4H.

[0182] The above technical solution outputs a prompt message when the first cumulative number is less than or equal to the first preset number, and controls the vehicle to switch from 4A to the target mode when the first cumulative number is greater than the first preset number; when the vehicle is in 4A mode, the mode is switched only after the wheel speed sensor detects slippage, and the key to launch start is the relatively short power burst period. When the mode switching condition is triggered, the tires may have lost kinetic energy by idling. By intervening in the drive mode before launch start, the vehicle switches from 4A to 4H or 4L, which can evenly distribute the torque of the front and rear axles of the vehicle, reduce the slippage of the vehicle, and thereby reduce the impact on the transmission system in the vehicle.

[0183] When the vehicle's driving mode is 4H or 4L, since the transfer case's locking type is rigid, the mechanical hardware connection of the mechanical lock can achieve even distribution of torque between the front and rear axles of the vehicle, and tire slippage is almost non-existent. Maintaining the current mode for launch start can reduce the probability of vehicle slippage, thereby reducing the impact on the vehicle's transmission system.

[0184] The above technical solution, when the vehicle type is a four-wheel drive vehicle, determines the vehicle's drive control strategy and controls the vehicle based on the vehicle's drive system type; since switching drive modes or limiting drive torque can reduce vehicle slippage, the present application can improve the matching of drive control strategies with vehicles of different drive system types, thereby reducing the impact on the transmission system of the vehicle for vehicles of different drive system types. At the same time, when the vehicle is not slipping, the vehicle exerts the maximum driving capability of the entire vehicle, ensuring the driver's driving pleasure, thereby reducing the loss to the vehicle while ensuring the driver's driving experience.

[0185] Figure 3 It is a schematic flowchart of another vehicle control method provided in an embodiment of the present application.

[0186] For example, Figure 3 The method shown can be executed by a vehicle controller or chip in the vehicle.

[0187] For example, Figure 3 As shown, the vehicle control method 300 includes steps S310 to S370.

[0188] S310: When the vehicle is in a part-time four-wheel drive mode and in a launch mode, determine the driving mode of the vehicle.

[0189] Exemplarily, when the vehicle is a part-time four-wheel drive and is in a launch mode, the driving mode of the vehicle is determined.

[0190] Optionally, the vehicle's driving modes include a two-wheel drive mode and a four-wheel drive mode.

[0191] S320: When the vehicle is in four-wheel drive mode, maintain the four-wheel drive mode.

[0192] For example, when the vehicle's drive system type is part-time four-wheel drive, the vehicle's drive mode is obtained; when the vehicle's drive mode is four-wheel drive mode, the torque of the vehicle's front and rear axles can be evenly distributed through mechanical hardware connection, and tire slippage almost does not occur, so the current mode can be maintained for launch start.

[0193] S330: When the vehicle is in the two-wheel drive mode, determine the cumulative number of launch starts.

[0194] Exemplarily, when the driving mode of the vehicle is the two-wheel drive mode, switching the driving mode is determined as the driving control strategy to switch the vehicle from the two-wheel drive mode to the four-wheel drive mode.

[0195] Optionally, there are two ways to control the vehicle to switch from two-wheel drive mode to four-wheel drive mode based on switching the driving mode. The first way is to output a prompt message to prompt the driver to manually switch the two-wheel drive mode to the four-wheel drive mode. The second way is to control the vehicle to automatically switch from two-wheel drive mode to four-wheel drive mode.

[0196] Optionally, the cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be repeated here.

[0197] It can be understood that the control method for switching the driving mode is determined by the cumulative number of times the vehicle is launched. On the one hand, the driver can be enabled to switch manually by increasing the prompt intensity. On the other hand, the mode is switched by automatically controlling the vehicle without the driver's intervention, thereby reducing the impact on the vehicle's transmission system.

[0198] S340, when the cumulative number is 0, the output ejection status is ready, and it is recommended to switch to four-wheel drive mode.

[0199] For example, when the vehicle is in launch mode and has a part-time four-wheel drive system, when the vehicle's driving mode is two-wheel drive mode and the cumulative number of times the vehicle has completed launch start is 0, it indicates that the driver has just started to perform launch start, and a prompt message "Ejection status is ready, it is recommended to switch to four-wheel drive mode" is output. Upon receiving the prompt message, the driver may manually switch from two-wheel drive mode to four-wheel drive mode.

[0200] When the vehicle switches from two-wheel drive mode to four-wheel drive mode, the driver can perform launch control while maintaining the four-wheel drive mode. If the driver continues to perform launch control while the vehicle is in two-wheel drive mode, the cumulative number of launch control attempts will be continuously monitored.

[0201] S350, when the cumulative number is 1, the output ejection status is ready, please switch to four-wheel drive mode immediately, the prompt message lasts for 1 minute, and is accompanied by three alarm sounds.

[0202] For example, when the vehicle is in launch mode and has a part-time four-wheel drive system, if the vehicle's drive mode is two-wheel drive and the cumulative number of launch attempts is one, the driver has been prompted to manually switch. However, if the driver still attempts launch in two-wheel drive mode, the prompt should be strengthened.

[0203] For example, when the cumulative number of launch attempts reaches one, the system will output a prompt message: "Ejection ready, please switch to four-wheel drive mode immediately." This prompt message will be displayed for one minute, accompanied by three alarm sounds. Upon receiving this prompt message, the driver may manually switch from two-wheel drive to four-wheel drive mode.

[0204] When the vehicle switches from two-wheel drive mode to four-wheel drive mode, the driver can perform launch control while maintaining the four-wheel drive mode. If the driver continues to perform launch control while the vehicle is in two-wheel drive mode, the cumulative number of launch control attempts will be continuously monitored.

[0205] S360, when the cumulative number of times is 2, the output ejection status is ready, please switch to four-wheel drive mode immediately, the prompt message will last for 3 minutes, accompanied by a continuous alarm sound.

[0206] For example, when the vehicle is in launch mode and has a part-time four-wheel drive system, and the vehicle's drive mode is two-wheel drive and the cumulative number of launch attempts is two, it indicates that the driver has been prompted multiple times to manually switch. However, if the driver still attempts launch attempts in two-wheel drive mode, the prompting intensity needs to be increased.

[0207] For example, when the cumulative number of launch attempts reaches two, the system will output a prompt message: "Ejection ready, please switch to four-wheel drive mode immediately." This prompt message will be displayed for three minutes, accompanied by a continuous alarm sound. Upon receiving this prompt message, the driver may manually switch from two-wheel drive to four-wheel drive mode.

[0208] Optionally, the prompt information may be outputted in the form of a display on the vehicle screen or a voice broadcast. The prompt information output method may be determined according to actual conditions and is not specifically limited here.

[0209] When the vehicle switches from 2WD mode to 4WD mode, the driver can simply perform launch control while maintaining 4WD mode. If the driver continues to perform launch control while the vehicle is in 2WD mode, the vehicle will continue to be monitored.

[0210] S370: When the cumulative number of times is 3, the vehicle is controlled to automatically switch from the two-wheel drive mode to the four-wheel drive mode.

[0211] For example, when a vehicle is in launch mode and has a part-time four-wheel drive system, and the vehicle's drive mode is two-wheel drive and the cumulative number of launch attempts is three, the driver has been prompted multiple times to manually switch. However, if the driver continues to launch in two-wheel drive mode, a forced switch is required. For example, when the cumulative number of launch attempts is three, the vehicle is controlled to automatically switch from two-wheel drive mode to four-wheel drive mode.

[0212] In the above technical solution, since part-time four-wheel drive vehicles have mechanical four-wheel drive capabilities, when the vehicle is in four-wheel drive mode, the torque between the front and rear axles of the vehicle can be evenly distributed, so the four-wheel drive mode can be maintained. When the vehicle is in two-wheel drive mode, the control method for switching the drive mode is determined by the cumulative number of vehicle launch attempts. This can be done by increasing the prompt intensity to enable the driver to manually switch, or by automatically controlling the vehicle to switch the mode without driver intervention, so that the vehicle switches to four-wheel drive mode, avoiding vehicle slippage and reducing the impact on the vehicle's drivetrain.

[0213] Figure 4 This is a schematic flowchart of another vehicle control method provided in an embodiment of the present application.

[0214] For example, Figure 4 The method shown can be executed by a vehicle controller or chip in the vehicle.

[0215] For example, Figure 4 As shown, the vehicle control method 400 includes steps S401 to S413.

[0216] S401: When the vehicle is an intelligent four-wheel drive vehicle and is in a launch mode, determine whether the transfer case has a mechanical lock.

[0217] Exemplarily, when the vehicle is an intelligent four-wheel drive and is in a launch mode, it is determined whether the transfer case in the intelligent four-wheel drive has a mechanical lock.

[0218] It should be noted that when the transfer case has a mechanical lock, the lock type of the transfer case is rigid. When the transfer case does not have a mechanical lock, the lock type of the transfer case is flexible.

[0219] S402: When the transfer case has no mechanical lock, determine K1 and K2.

[0220] For example, when the intelligent four-wheel drive transfer case lacks a mechanical lock, the vehicle achieves torque distribution through the transfer case's internal friction plate pack. However, the friction plate pack is a flexible connection, and it is impossible to achieve rigid locking of the front and rear axles through hardware. Therefore, during launch, torque distribution between the front and rear axles cannot be achieved, and additional problems such as friction plate ablation may occur. Therefore, torque control is required to ensure the safety of the launch and reduce damage to the vehicle.

[0221] For example, K1 indicates the torque that can be transmitted to the drive wheels without considering rolling friction, i.e., the theoretically transmittable torque. K2 indicates the actual drive torque at the vehicle's rear axle after accounting for hybrid friction, i.e., the vehicle's safe torque threshold. The vehicle's engine torque limit is determined based on K1 and K2.

[0222] S403, K1<90%*K2; if so, execute S404; if not, execute S405.

[0223] For example, the safety of the vehicle is ensured by comparing K1 with 90%*K2.

[0224] S404: The vehicle engine's limited torque is K1.

[0225] For example, when K1<90%*K2, it indicates that when the engine output torque is K1, the vehicle can exert its maximum driving capability and the vehicle will not slip, ensuring the safety of the vehicle. In this case, the engine's limit torque is determined to be K1 for launch start.

[0226] Optionally, when the limited torque of the engine is K1, the output torque of the engine is not greater than K1. Preferably, the output torque of the engine is K1.

[0227] S405: Determine a second accumulated number of vehicle launch starts.

[0228] Optionally, the method for determining the second cumulative number of times may refer to the method in the aforementioned disclosed embodiment, which will not be described in detail here.

[0229] S406 , when the second cumulative number is 1, the engine's limited torque is 90%*K2.

[0230] For example, when the second cumulative number is 1, the impact on the transmission system in the vehicle may be small, and the engine's limited torque is 90%*K2, which can ensure the safety of the vehicle, and the engine's limited torque is determined to be 90%*K2 for launch start.

[0231] S407: When the second cumulative number is 2, the engine's limited torque is 80%*K2.

[0232] For example, when the second cumulative number is 2, the impact on the transmission system in the vehicle increases, and the engine's limit torque is 80%*K2. To ensure the safety of the vehicle, the engine's limit torque is determined to be 80%*K2 for launch start.

[0233] S408: When the second cumulative number is 3, the engine's limited torque is 65%*K2.

[0234] For example, when the second cumulative number is 3, the impact on the transmission system in the vehicle is relatively large, and the engine's limited torque is 65%*K2. To ensure the safety of the vehicle, the engine's limited torque is determined to be 65%*K2 for launch start.

[0235] S409: When the second accumulated number is greater than or equal to 4, the engine's limited torque is 50%*K2.

[0236] For example, when the second cumulative number of times is greater than or equal to 4, the impact on the transmission system in the vehicle is extremely great, and the engine's limited torque is 50%*K2, which can enable the vehicle to complete a launch start and limit the vehicle's engine torque to avoid vehicle slipping, thereby ensuring the safety of the vehicle.

[0237] S410: When the transfer case has a mechanical lock, determine the driving mode of the vehicle.

[0238] For example, when the transfer case has a mechanical lock, the locking type of the intelligent four-wheel drive transfer case is rigid. With a mechanical lock, the mechanical engagement of the mechanical lock replaces the friction transmission of the multi-plate clutch, achieving a rigid power distribution between the front and rear axles when needed. This is a key structure that balances intelligent dynamic adjustment with reliability under extreme conditions. Simply adjusting the vehicle's drive mode to achieve a rigid power distribution between the front and rear axles can reduce vehicle slippage and minimize impact on the vehicle's driveline.

[0239] S411: When the driving mode is 4H / 4L, maintain 4H / 4L.

[0240] For example, when the vehicle's driving mode is 4H or 4L, since the transfer case has a mechanical lock, the mechanical hardware connection of the mechanical lock can achieve an even distribution of torque between the front and rear axles of the vehicle, and tire slippage will hardly occur. Maintaining the current mode for launch start can reduce the probability of vehicle slippage, thereby reducing the impact on the vehicle's transmission system.

[0241] S412: When the driving mode is 2H, control the vehicle to switch from 2H to 4H.

[0242] For example, when the vehicle's drive mode is 2H, the core of launch control is to efficiently convert engine power into driving force by maximizing tire grip. However, 2H's two-wheel drive cannot effectively handle the traction requirements of high torque output, which will increase power loss caused by vehicle slip and impact on the vehicle's drive system. Therefore, to ensure vehicle safety and reduce impact on the vehicle's drive system, switching drive modes is determined as the vehicle's drive control strategy.

[0243] For example, the cumulative number of times the vehicle has completed a launch control is determined, and if the cumulative number is less than or equal to a preset number, a prompt message is output to prompt the user to manually switch the vehicle from 2H to 4H. If the cumulative number is greater than the preset number, the vehicle is automatically controlled to switch from 2H to 4H.

[0244] Optionally, the cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be repeated here.

[0245] For example, the preset number of times is 2. When the cumulative number reaches 1, the output message is "Hello, please switch to 4H immediately". The prompt message lasts for 1 minute and is accompanied by three alarm sounds. When the cumulative number reaches 2, the output message is "Hello, please switch to 4H immediately". The prompt message lasts for 3 minutes and is accompanied by a continuous alarm sound. When the cumulative number reaches 3, the vehicle is automatically controlled to switch from 2H to 4H.

[0246] S413: When the driving mode is 4A, the vehicle is controlled to switch from 4A to 4H.

[0247] Exemplarily, when the vehicle's driving mode is 4A, the first cumulative number of times the vehicle completes a launch control in 4A is determined; when the first cumulative number is less than or equal to a first preset number, a prompt message is output, and the prompt message is used to prompt the user to manually switch from 4A to 4H; when the first cumulative number is greater than the first preset number, the vehicle is controlled to automatically switch from 4A to 4H.

[0248] Optionally, the first cumulative number of times can be determined according to the method in the aforementioned disclosed embodiment, which will not be described in detail here.

[0249] Optionally, the first preset number of times may be 1, 2, etc. The first preset number of times may be determined according to actual conditions and is not specifically limited here.

[0250] For example, when the vehicle is in ejection mode, the transfer case friction plates are rapidly compressed to maximize the transfer case's flexibility. Furthermore, when the first cumulative count reaches 1, a prompt message is output: "Hello, please switch to 4H immediately." This prompt message lasts for 3 minutes, accompanied by a continuous alarm sound. When the cumulative count reaches 2, the vehicle automatically switches from 4A to 4H.

[0251] In the above technical solution, when the transfer case has a mechanical lock, since the vehicle has mechanical four-wheel drive capability, that is, the mechanical hardware connection can achieve an even distribution of torque between the front and rear axles of the vehicle, the drive control strategy is determined based on the vehicle's drive mode, and the vehicle is then controlled in a drive mode that can achieve mechanical four-wheel drive capability to prevent tire slip. In the case of a transfer case without a mechanical lock, the drive control strategy is determined based on the first torque and the second torque. Since the friction plate group inside the vehicle transfer case is connected by a flexible connection, the even distribution of torque between the front and rear axles of the vehicle cannot be achieved. The first torque and the second torque of the vehicle are used to determine whether the vehicle needs to be torque-limited, thereby reducing the impact on the vehicle's transmission system while ensuring the driving experience of the user inside the vehicle.

[0252] It should be understood that the above examples are intended to help those skilled in the art understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific numerical values or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or variations based on the above examples, and such modifications or variations also fall within the scope of the embodiments of the present application.

[0253] Combined with the above Figures 1 to 4 The vehicle control method provided by the embodiment of the present application is described in detail; Figure 5 and Figure 6 The device embodiments of the present application are described in detail. It should be understood that the devices in the embodiments of the present application can execute the various methods of the aforementioned embodiments of the present application, that is, the specific working processes of the following various products can refer to the corresponding processes in the aforementioned method embodiments.

[0254] Figure 5 It is a structural schematic diagram of a vehicle control device provided in an embodiment of the present application.

[0255] For example, Figure 5 As shown, the vehicle control device 500 includes:

[0256] Communication module 510: used to obtain the vehicle type of the vehicle when the vehicle is in the ejection mode;

[0257] Processing module 520: for determining a driving control strategy for the vehicle based on the type of the vehicle's drive system when the vehicle type is a four-wheel drive vehicle, the driving control strategy including switching a driving mode or limiting a driving torque;

[0258] Processing module 520: used to control the vehicle based on the driving control strategy.

[0259] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0260] In the case where the drive system type is intelligent four-wheel drive, a drive control strategy is determined based on the locking type of the transfer case in the vehicle;

[0261] When the drive system type is part-time four-wheel drive, the drive control strategy is determined based on the vehicle's drive mode.

[0262] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0263] When the lock type of the transfer case is a rigid type, determining a drive control strategy based on a drive mode of the vehicle;

[0264] When the lock type of the transfer case is the flexible type, a driving control strategy is determined based on a first torque and a second torque, where the first torque is obtained based on the engine torque and the second torque is obtained based on the rear wheel load.

[0265] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0266] When the driving mode is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode, switching the driving mode is determined as the driving control strategy;

[0267] The switching driving mode is used to indicate switching from the driving mode to the target mode, and the target mode is the four-wheel drive high-speed mode or the four-wheel drive low-speed mode.

[0268] Optionally, as an embodiment, when the driving mode is the intelligent four-wheel drive mode, the processing module 520 is specifically configured to:

[0269] Obtain the first cumulative number of times the vehicle completes launch control in intelligent four-wheel drive mode;

[0270] When the first accumulated number of times is less than or equal to the first preset number of times, outputting a prompt message, the prompt message being used to prompt the user to manually switch from the intelligent four-wheel drive mode to the target mode;

[0271] When the first accumulated number of times is greater than the first preset number of times, the vehicle is controlled to switch from the intelligent four-wheel drive mode to the target mode.

[0272] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0273] Based on the second torque, a reference torque is obtained, wherein the reference torque is less than the second torque;

[0274] In a case where the first torque is greater than or equal to the reference torque, limiting the driving torque is determined as the driving control strategy.

[0275] Optionally, as an embodiment, when the first torque is greater than or equal to the reference torque, the processing module 520 is specifically configured to:

[0276] Obtain the second cumulative number of times the vehicle completes a launch start;

[0277] Based on the second accumulated number and the second torque, a limit torque of the engine is determined.

[0278] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0279] When the second accumulated number is less than the second preset number, the second torque is adjusted based on the adjustment coefficient of the second accumulated number to obtain a limiting torque, where the limiting torque is negatively correlated with the second accumulated number;

[0280] When the second accumulated number is greater than or equal to the second preset number, the second torque is adjusted based on a preset coefficient to obtain a limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient.

[0281] Optionally, as an embodiment, the processing module 520 is specifically configured to:

[0282] Get the number of ejection attempts and the ejection interval duration for the vehicle. The ejection interval duration indicates the interval between the last ejection attempt and the current moment.

[0283] When the ejection interval is shorter than the preset time, the number of ejections is determined as the second cumulative number;

[0284] When the ejection interval duration is greater than or equal to the preset duration, the ejection number adjustment amount is determined based on the ejection interval duration, and the second cumulative number is determined based on the ejection number adjustment amount and the ejection number, and the second cumulative number is less than the ejection number.

[0285] It should be noted that the vehicle control device 500 is implemented in the form of a functional unit. The term "module" herein can be implemented in the form of software and / or hardware, and is not specifically limited to this.

[0286] For example, a "module" may be a software program, a hardware circuit, or a combination of the two that implements the aforementioned functionality. The hardware circuit may include an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor) and memory for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functionality.

[0287] Therefore, the units of each example described in the embodiments of this application can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0288] Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0289] For example, the vehicle 600 and Figure 1 The vehicle 100 in FIG. 1 represents the same vehicle.

[0290] For example, Figure 6 As shown, the vehicle 600 includes: a memory 610 and a processor 620, wherein the memory 610 stores an executable program code 630, and the processor 620 is used to call and execute the executable program code 630 to perform a vehicle control method.

[0291] Exemplarily, the memory 610 can be used to store relevant programs of the vehicle control method provided in the embodiments of the present application; the processor 620 can call the relevant programs of the vehicle control method stored in the memory 610 to execute the vehicle control method of the embodiments of the present application; for example, when the vehicle is in ejection mode, the vehicle type of the vehicle is obtained; when the vehicle type is a four-wheel drive vehicle, the vehicle drive control strategy is determined based on the vehicle drive system type, and the drive control strategy includes switching the drive mode or limiting the drive torque; based on the drive control strategy, the vehicle is controlled.

[0292] In this embodiment, the device can be divided into functional modules based on the above-described method examples. For example, each functional module can be mapped to a specific functional module, or two or more functions can be integrated into a single processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used.

[0293] In the case of dividing each functional module into corresponding functional modules, the device may further include a communication module and a processing module, etc. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0294] It should be understood that the device provided in this embodiment is used to execute the above-mentioned vehicle control method, and thus can achieve the same effect as the above-mentioned implementation method.

[0295] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is used in a vehicle, the processing module may be used to control and manage the vehicle's movements, while the storage module may be used to support the vehicle's execution of relevant program codes.

[0296] The processing module may be a processor or controller that implements or executes the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing system (DSP) and a microprocessor, and the storage module may be a memory.

[0297] In addition, the device provided in the embodiments of the present application can specifically be a chip, component or module, and the chip may include a connected processor and memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a vehicle control method provided in the above embodiment.

[0298] The present application also provides a computer-readable storage medium, which stores computer program code. When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement a vehicle control method provided by the above-mentioned embodiment. Among them, computer-readable storage media may include, but are not limited to, any type of disk, including floppy disks, optical disks, Digital Video Discs (DVDs), Compact Disc Read-Only Memory (CD-ROMs), microdrives and magneto-optical disks, Read-Only Memory (ROMs), Random Access Memory (RAMs), Erasable Programmable Read-Only Memory (EPROMs), Electrically Erasable Programmable Read-Only Memory (EEPROMs), Dynamic Random Access Memory (DRAMs), Video Random Access Memory (VRAMs), flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of medium or device suitable for storing instructions and / or data.

[0299] The present application also provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the above-mentioned related steps to implement a vehicle control method provided by the above embodiment.

[0300] Among them, the vehicle, computer-readable storage medium, computer program product or chip provided in this application are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0301] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0302] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0303] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A vehicle control method, characterized in that: The method comprises: When the vehicle is in the ejection mode, obtaining the vehicle type of the vehicle; In a case where the vehicle type is a four-wheel drive vehicle, determining a driving control strategy for the vehicle based on a driving system type of the vehicle, the driving control strategy including switching a driving mode or limiting a driving torque; The vehicle is controlled based on the driving control strategy.

2. The method according to claim 1, characterized in that The determining of the driving control strategy of the vehicle based on the driving system type of the vehicle includes: In a case where the drive system type is intelligent four-wheel drive, determining the drive control strategy based on a locking type of a transfer case in the vehicle; In a case where the driving system type is a part-time four-wheel drive, the driving control strategy is determined based on the driving mode of the vehicle.

3. The method according to claim 2, characterized in that The determining of the driving control strategy based on the locking type of the transfer case in the vehicle includes: When the locking type of the transfer case is a rigid type, determining the driving control strategy based on the driving mode of the vehicle; When the lock type of the transfer case is a flexible type, the drive control strategy is determined based on a first torque and a second torque, wherein the first torque is obtained based on the engine torque and the second torque is obtained based on the rear wheel load.

4. The method according to claim 2 or 3, characterized in that The determining of the driving control strategy based on the driving mode of the vehicle includes: When the drive system type is the part-time four-wheel drive and the drive mode is the two-wheel drive mode, determining the switching drive mode as the drive control strategy, the switching drive mode is used to indicate switching from the two-wheel drive mode to the four-wheel drive mode; When the drive system type is the intelligent four-wheel drive and the drive mode is the intelligent four-wheel drive mode or the two-wheel drive high-speed mode, the switching drive mode is determined as the drive control strategy, wherein the switching drive mode is used to indicate switching from the drive mode to the target mode, and the target mode is the four-wheel drive high-speed mode or the four-wheel drive low-speed mode.

5. The method according to claim 4, characterized in that When the driving mode is the intelligent four-wheel drive mode, the method further includes: Obtaining a first cumulative number of launch starts completed by the vehicle in the intelligent four-wheel drive mode; The controlling of the vehicle based on the driving control strategy includes: When the first accumulated number of times is less than or equal to a first preset number of times, outputting a prompt message, wherein the prompt message is used to prompt a user to manually switch from the intelligent four-wheel drive mode to the target mode; When the first accumulated number of times is greater than a first preset number of times, the vehicle is controlled to switch from the intelligent four-wheel drive mode to the target mode.

6. The method according to claim 3, characterized in that The determining of the driving control strategy based on the first torque and the second torque includes: obtaining a reference torque based on the second torque, wherein the reference torque is smaller than the second torque; In a case where the first torque is greater than or equal to the reference torque, the limited driving torque is determined as the driving control strategy.

7. The method according to claim 6, characterized in that When the first torque is greater than or equal to the reference torque, the method further includes: Obtaining a second cumulative number of times the vehicle completes a launch control; Based on the second accumulated number and the second torque, a limit torque of the engine is determined.

8. The method according to claim 7, characterized in that The determining of the engine's limit torque based on the second accumulated number and the second torque includes: When the second accumulated number is less than a second preset number, the second torque is adjusted based on an adjustment coefficient of the second accumulated number to obtain the limiting torque, where the limiting torque is negatively correlated with the second accumulated number; When the second accumulated number is greater than or equal to a second preset number, the second torque is adjusted based on a preset coefficient to obtain the limiting torque, and the preset coefficient is less than or equal to the adjustment coefficient.

9. The method according to claim 7, characterized in that The obtaining of a second cumulative number of times the vehicle completes a launch start includes: Obtaining the number of ejection attempts and the ejection interval duration of the vehicle completing a launch start, where the ejection interval duration indicates the interval between the historical moment of the last launch start and the current moment; When the ejection interval is shorter than a preset time, the ejection count is determined as the second cumulative count; When the ejection interval duration is greater than or equal to a preset duration, an ejection number adjustment amount is determined based on the ejection interval duration, and the second cumulative number is determined based on the ejection number adjustment amount and the ejection number, and the second cumulative number is less than the ejection number.

10. A vehicle, characterized in that: The vehicle comprises: a memory for storing executable program code; A processor is used to call and run the executable program code from the memory, so that the vehicle executes the vehicle control method according to any one of claims 1 to 9.

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