Exhaust control method and device, vehicle and storage medium

Abstract

The invention provides an exhaust control method and device, a vehicle and a storage medium, the method is applied to the field of computers, and the method comprises the steps that the first oil pumping capacity of a torque manager in the vehicle is determined, and when the difference value between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold value, the first oil pumping capacity is determined to be lower than the standard oil pumping capacity of the torque manager; and determining a first exhaust strategy of the torque manager based on the model of the torque manager, and controlling the torque manager to execute the first exhaust strategy. By adopting the mode, the condition that air is mixed into the torque manager is accurately determined by detecting the oil pumping capacity, and the exhaust strategy is accurately determined according to the model of the torque manager, so that the air mixed into the torque manager is exhausted, and the normal use of the four-wheel drive function of the vehicle is ensured.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to an exhaust control method, device, vehicle and storage medium. Background Art

[0002] The intelligent torque manager is a component in the four-wheel drive system that can realize the switch between two-wheel drive and four-wheel drive. It is used in vehicles with a transverse engine layout, usually located in front of the rear main reducer, and distributes the torque input from the rear axle drive shaft to the rear axle according to a certain strategy, while also playing the role of inter-axle differential.

[0003] Vehicles equipped with an intelligent torque manager are vehicles with intelligent four-wheel drive systems. The vehicle can engage and disengage the four-wheel drive function and the degree of engagement, etc., without requiring special operation by the driver. During the design and development phase of the vehicle, the four-wheel drive system will be calibrated based on the specific parameters and actual vehicle status, in order to allow the four-wheel drive system to better play its own advantages.

[0004] However, in some cases, the degree of intervention of the four-wheel drive system cannot reach the required level, and the torque of the four-wheel drive system is significantly lower than the torque required by the vehicle. The reason is that air is mixed in the oil channel of the torque manager. Summary of the invention

[0005] This application provides an exhaust control method, device, vehicle and storage medium, aiming to solve the problem of air mixing in the oil passage of the torque manager causing the four-wheel drive function to be reduced. The technical solution is as follows:

[0006] In a first aspect, an exhaust control method is provided, the method comprising:

[0007] determining a first pumping capacity of a torque manager in a vehicle;

[0008] When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on the model of the torque manager; the standard oil pumping capacity is a calibrated value when no air is mixed in the torque manager;

[0009] The torque manager is controlled to execute the first exhaust strategy.

[0010] In the above technical solution, a method for exhaust control is proposed, which determines whether to execute an exhaust strategy for the torque manager by detecting whether the first oil pumping capacity of the torque manager is lower than the calibrated standard oil pumping capacity, wherein the first oil pumping capacity is the oil pumping capacity of the current torque manager. And the exhaust strategy is specifically confirmed for different types of torque managers to improve the accuracy of determining the exhaust strategy, so as to fully exhaust the air mixed in the torque manager and ensure the normal use of the vehicle's four-wheel drive function.

[0011] In combination with the first aspect, in certain possible implementations, determining the first pumping capacity of the torque manager in the vehicle includes: determining the theoretical pumping capacity of the torque manager in the vehicle; obtaining the model of the torque manager; determining the pumping loss rate of the torque manager based on the model of the torque manager; and determining the first pumping capacity of the torque manager based on the pumping loss rate and the theoretical pumping capacity.

[0012] In the above technical solution, a specific implementation method for determining the oil pumping capacity of the torque manager is proposed. In actual operation, the torque manager will cause oil pumping work loss due to factors such as oil pumping friction, liquid flow resistance, and heat loss. Therefore, when determining the first oil pumping capacity of the torque manager, it is necessary to determine the oil pumping work loss rate of the torque manager under normal working conditions according to the model of the torque manager, and calculate the first oil pumping capacity of the current torque manager together with the theoretical oil pumping capacity of the torque manager. In this way, taking into account the normal working loss of the torque manager, a more accurate first oil pumping capacity can be calculated.

[0013] In combination with the first aspect, in some possible implementations, determining the theoretical oil pumping capacity of the torque manager includes: determining the oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager based on the model of the torque manager; obtaining the rotation speed of the motor in the torque manager and the working time of the motor; determining the theoretical oil pumping capacity of the torque manager based on the oil channel parameters, the friction plate group parameters, the plunger pump parameters, the rotation speed of the motor and the working time of the motor.

[0014] In the above technical solution, a method for determining the theoretical oil pumping capacity of the torque manager is specifically proposed. Since the torque managers installed in different vehicles have different models, the oil pumping capacity of different torque managers is also different. Therefore, the oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager can be determined based on the model of the torque manager. Then, based on the rotation speed of the torque manager motor, the working time of the motor, the oil channel parameters, the friction plate group parameters and the plunger pump parameters, the theoretical oil pumping capacity of the torque manager can be accurately determined.

[0015] In combination with the first aspect, in certain possible implementations, when the difference between the first pumping capacity and the standard pumping capacity of the torque manager exceeds a preset threshold, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, including: when the difference between the first pumping capacity and the standard pumping capacity of the torque manager exceeds a preset threshold, continuously detecting the second pumping capacity of the torque manager within a preset detection time; if within the preset detection time, the difference between the second pumping capacity and the standard pumping capacity continues to exceed a preset threshold, determining the first exhaust strategy of the torque manager based on the model of the torque manager.

[0016] In the above technical solution, a specific implementation method of the self-check strategy is proposed. When it is detected for the first time that the difference between the first pumping capacity and the standard pumping capacity of the torque manager exceeds the preset threshold, the detection is continued for a preset detection time. If the second pumping capacity of the torque manager is still lower than the standard pumping capacity by more than the preset threshold during the preset detection time, it means that there is air in the oil channel of the torque manager, and the first exhaust strategy needs to be started. By setting up continuous detection, false detection caused by system failure and system fluctuation can be avoided, ensuring that the mixing of air can be accurately detected.

[0017] In combination with the first aspect, in some possible implementations, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, including: determining the expected oil pumping capacity based on the standard oil pumping capacity; determining the first exhaust operating time and the expected motor operating speed based on the upper limit operating speed of the motor corresponding to the model of the torque manager and the expected oil pumping capacity; determining the first exhaust strategy of the torque manager based on the first exhaust operating time and the expected motor operating speed.

[0018] In the above technical solution, a specific method for determining the first exhaust strategy is proposed. It can be understood that when the torque manager performs exhaust, it mainly rotates the motor, uses the physical vacuum generated by the rotation to drive the oil pump to pump oil, and drives the air to be discharged through the large-scale rapid flow of oil in the oil channel. Therefore, the first exhaust strategy mainly needs to determine the motor speed and running time. The expected oil pumping capacity required to execute the exhaust strategy is determined by the standard oil pumping capacity of the torque manager. The expected oil pumping capacity refers to the total oil pumping capacity required for the torque manager to provide when executing the first exhaust strategy. According to the expected oil pumping capacity and the upper limit operating speed of the motor of the current torque manager model, the first exhaust operation time and the expected motor operating speed required to complete the expected oil pumping capacity are determined, wherein the expected motor operating speed cannot exceed the upper limit operating speed of the motor. The first exhaust strategy of the torque manager is determined according to the first exhaust operation time and the expected motor operating speed, thereby realizing the self-exhaustion of the torque manager.

[0019] In combination with the first aspect, in some possible implementations, after controlling the torque manager to execute the first exhaust strategy, it also includes: determining the second exhaust strategy of the torque manager based on the total oil filling amount of the torque manager, and controlling the torque manager to execute the second exhaust strategy.

[0020] In the above technical solution, a self-checking strategy after executing the exhaust strategy is specifically proposed, that is, the second exhaust strategy, through which the exhaust is completely ensured. The torque manager corresponds to an oil chamber, and the total oil filling amount of the torque manager is the total amount of oil in the oil chamber. The second exhaust strategy is determined again according to the total oil filling amount, so that all the oil runs in the torque manager at least once, ensuring that the air in the oil chamber and the oil channel can be completely exhausted.

[0021] In combination with the first aspect, in certain possible implementations, a second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy, including: obtaining the plunger pump parameters of the torque manager, the pump oil working loss rate and the operating speed of the second motor in the first exhaust strategy; determining the second exhaust operation time of the torque manager based on the total oil filling amount, the plunger pump parameters, the pump oil working loss rate and the operating speed of the second motor; determining the second exhaust strategy of the torque manager based on the second exhaust operation time and the operating speed of the second motor.

[0022] In the above technical solution, a specific method for determining the second exhaust strategy is specifically proposed. Obtain the plunger pump parameters of the torque manager, the pump oil working loss rate and the second motor operating speed in the first exhaust strategy. The second motor operating speed is also the speed used when executing the first exhaust strategy. The second exhaust operation time of the torque manager is determined according to the total oil filling amount, the pump oil working loss rate and the second motor operating speed, and the second exhaust strategy is obtained according to the second exhaust operation time and the second motor operating speed. Among them, using the second motor operating speed determined in the first exhaust strategy can save the calculation amount of determining the motor operating speed again, thereby quickly realizing the determination of the second exhaust strategy. Determining the second exhaust strategy in this way avoids the problem of only exhausting part of the air, resulting in frequent repeated exhaust.

[0023] In combination with the first aspect, in some possible implementations, controlling the torque manager to execute the first exhaust strategy includes: controlling a preset display area of ​​the vehicle to display a repair prompt message to instruct the driver to park safely; if the vehicle is detected to be parked within the prompt time of the repair prompt message, controlling the torque manager to execute the first exhaust strategy; when the first exhaust strategy is executed, controlling the preset display area to cancel the display of the repair prompt message.

[0024] The above technical solution provides a solution for prompting the user to stop the vehicle after determining that the exhaust strategy needs to be executed. After determining the first exhaust strategy, the repair prompt information is displayed in the preset display area of ​​the vehicle to instruct the driver to park safely. After the driver parks safely, the first exhaust strategy is executed. The exhaust strategy can be executed while ensuring driving safety. After the first exhaust strategy is executed, the repair prompt information is canceled. By timely displaying the fault repair prompt information in the preset display area, the driver can more easily understand the operating status of the vehicle. Timely and accurate prompt information can enhance the user's trust and satisfaction with the vehicle, reduce uncertainty in driving, and improve the overall vehicle experience.

[0025] In a second aspect, an embodiment of the present specification provides an exhaust control device, comprising:

[0026] a detection unit for determining a first pumping capacity of a torque manager in a vehicle;

[0027] a strategy determination unit, configured to determine a first exhaust strategy of the torque manager based on a model of the torque manager when a difference between the first oil pumping capacity and a standard oil pumping capacity of the torque manager exceeds a preset threshold; the standard oil pumping capacity is a calibrated value when no air is mixed into the torque manager;

[0028] The exhaust unit is used to control the torque manager to execute the first exhaust strategy.

[0029] In a third aspect, an embodiment of the present specification provides a vehicle, the vehicle comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the above method when executed by the processor.

[0030] In a fourth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the steps of the above method are implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an example schematic diagram of an exhaust control method provided in an embodiment of this specification;

[0032] Figure 2 It is a flow chart of an exhaust control method provided in an embodiment of this specification;

[0033] Figure 3 It is a flow chart of an exhaust control method provided in an embodiment of this specification;

[0034] Figure 4 is a schematic diagram of an interface of an exhaust control method provided in an embodiment of this specification;

[0035] Figure 5 is a schematic diagram of an interface of an exhaust control method provided in an embodiment of this specification;

[0036] Figure 6 is a schematic diagram of an interface of an exhaust control method provided in an embodiment of this specification;

[0037] Figure 7 is a schematic diagram of the structure of an exhaust control device provided in an embodiment of this specification;

[0038] Figure 8 It is a structural schematic diagram of a vehicle provided in an embodiment of this specification. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings to clearly and thoroughly describe the technical solutions in this application. In the description of the embodiments of this specification, 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 specification, "multiple" means two or more than two.

[0040] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0041] In the relevant technology, torque managers can be divided into three types according to different basic principles: electromagnetic, electro-hydraulic and electromechanical. At present, the electro-hydraulic intelligent torque manager is commonly used. The electro-hydraulic intelligent torque manager is assembled from flange + housing + motor + hydraulic pump + friction plate group + ECU controller and other main sub-parts and auxiliary parts such as thrust bearings, pistons, dust covers, wiring harnesses, etc. Its ECU controller monitors the vehicle status and driving signals in real time, calculates the torque value of the four-wheel drive system in real time according to its internal logic and the vehicle-specific calibration value, and automatically converts it into internal instructions to prompt the motor to rotate at the corresponding speed, drive the hydraulic pump to generate a certain hydraulic pressure, and then push the friction plate group axially to tighten, and finally generate force transmission. By adjusting the rotation speed of the motor, the transmission force of the friction plate group can be indirectly adjusted.

[0042] See also Figure 1 , Figure 1This is an example schematic diagram of an exhaust control method provided in an embodiment of this specification. Since the torque manager is assembled in a factory under normal pressure, and the oil chamber of the torque manager is on the rear axle, the oil can only be added after the torque manager and the rear axle are assembled. At this time, there is air in the oil passage of the torque manager. After adding oil, it cannot be guaranteed that the air in the oil passage is completely removed. If air is mixed in the oil passage of the torque manager, there are the following two problems:

[0043] ① After the air pressure increases, its volume can be compressed. This causes the air to be compressed and its volume to be reduced in the relatively sealed oil channel, which objectively releases the hydraulic pressure of the oil, resulting in the oil being unable to form an effective high pressure, and thus unable to compress the friction plate group to form the transmission of the four-wheel drive torque;

[0044] ② When the oil pump (hydraulic pump) pumps oil, it will draw in some air instead of oil. After the air is extracted, effective liquid pressure cannot be established, and the risk of air mixing into the oil channel will increase.

[0045] Based on the above situation, the embodiment of this specification proposes an exhaust control method. By comparing the first oil pumping capacity of the torque manager with the standard oil pumping capacity, it is found whether there is air inside the torque manager. When the air needs to be exhausted, the first exhaust strategy of the torque manager is accurately determined according to the model of the torque manager, and the motor is rotated by executing the first exhaust strategy setting, and the physical vacuum generated by the rotation is used to drive the oil pump to pump oil, and the oil is rapidly flowed in a large range in the oil channel to drive the air to be exhausted, thereby realizing the diagnosis and exhaust treatment of the air mixed in the oil channel of the torque manager.

[0046] The exhaust control method provided in this specification is described in detail below in conjunction with specific embodiments.

[0047] Figure 2 is a flow chart of an exhaust control method provided in an embodiment of this specification. Figure 2 As shown, the method of the embodiment of this specification may include the following steps S101-S103.

[0048] S101, determining a first oil pumping capacity of a torque manager in a vehicle;

[0049] In one embodiment, the oil pumping capacity of the torque manager refers to the ability to pump liquid within a certain period of time, which is usually expressed in flow rate (unit: liters per minute, L / min). The oil pumping capacity of the torque converter is closely related to factors such as flow rate, pressure, and speed, and has an important impact on the working efficiency and stability of the transmission. In one embodiment, the oil pumping capacity of the torque manager under normal operation can be calculated based on the design size of the torque manager hardware. It can be understood that when air is mixed into the oil channel of the torque manager, the oil pumping capacity will decrease. Therefore, the oil pumping capacity of the torque manager can be detected at a set time to determine whether there is air mixed in the torque manager. Among them, the first oil pumping capacity can be the oil pumping capacity detected at the current moment, or it can be the oil pumping capacity detected at any detection time, and there is no specific limitation.

[0050] S102, when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on the model of the torque manager;

[0051] In one embodiment, the standard oil pumping capacity is a calibration value when there is no air mixed in the torque manager. During the first calibration, the torque manager is allowed to operate normally to ensure that no air is mixed in the oil, and the actual oil pumping value (standard oil pumping capacity) of the torque manager is tested on a test bench. Among them, the standard oil pumping capacity reflects the ability of the whole vehicle to intervene in the four-wheel drive system. Afterwards, the first oil pumping capacity obtained is compared with the standard oil pumping capacity to determine the difference between the first oil pumping capacity and the standard oil pumping capacity. When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, it indicates that the torque manager is abnormal at this time. Among them, the preset threshold can be set according to actual needs, for example, it can be 5% of the standard oil pumping capacity.

[0052] Different models of torque managers have different hardware design parameters. Therefore, when controlling the motor rotation to exhaust, it is necessary to confirm the exhaust strategy in a targeted manner to improve the accuracy of exhaust control. Among them, the model of the torque manager can be determined according to the vehicle model. Usually, the torque manager model corresponding to the same vehicle model is the same.

[0053] S103: Control the torque manager to execute the first exhaust strategy.

[0054] In one embodiment, after determining the first exhaust strategy, the torque manager is controlled to execute the first exhaust strategy. Specifically, the torque manager motor can be controlled to rotate according to the first exhaust strategy, and the physical vacuum generated by the rotation can be used to drive the oil pump to pump oil, so that the oil can fully run in the oil channel to achieve the purpose of exhausting air.

[0055] It should be noted that the method can be applied to a vehicle, specifically to an electronic control unit (ECU) in a vehicle, and can also be applied to a torque manager in a vehicle.

[0056] In the embodiment of the specification, by determining the first oil pumping capacity of the torque manager in the vehicle, when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, and the torque manager is controlled to execute the first exhaust strategy. Thus, the air mixed in the torque manager can be automatically detected and exhausted, ensuring the normal use of the vehicle's four-wheel drive function.

[0057] See also Figure 3 , is a flow chart of an exhaust control method provided in the embodiment of this specification. Figure 3 As shown, the method of the embodiment of this specification may include the following steps S201-S208.

[0058] S201, determining a theoretical oil pumping capacity of a torque manager in a vehicle;

[0059] In one embodiment, the oil pumping capacity of the torque manager is mainly related to the displacement and speed of the pump. Therefore, the theoretical oil pumping capacity of the torque manager can be determined by determining the displacement and speed of the pump in the torque manager. The theoretical oil pumping capacity is the oil pumping capacity determined without considering the normal torque manager working consumption. After that, the oil pumping working loss rate of the torque manager needs to be obtained to calculate the actual oil pumping capacity. It should be noted that when determining the theoretical oil pumping capacity, the actual structure of different torque managers needs to be taken into account. Torque managers with different structures may have different calculation methods, which can be determined according to actual conditions.

[0060] Further, in one embodiment, determining the theoretical oil pumping capacity of the torque manager in the vehicle includes the following steps S2011-S2013:

[0061] S2011, determining oil channel parameters, friction plate group parameters, and plunger pump parameters of the torque manager based on the model of the torque manager;

[0062] In one embodiment, due to the different models of torque managers installed in different vehicles, the oil pumping capabilities of different torque managers are also different. Therefore, the oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager can be determined based on the model of the torque manager.

[0063] Exemplarily, the oil channel parameters may include the minimum diameter in the high-pressure oil channel; the friction plate group parameters may include the working area of ​​the friction plate group (i.e., the effective working area) and the number of friction plate groups; the plunger pump parameters may include the number of plunger pumps in the oil pump and the working volume of a single plunger pump in the oil pump.

[0064] S2012, obtaining a rotation speed of a motor in the torque manager and a working time of the motor;

[0065] It is understandable that since the oil pumping capacity is also related to the motor working parameters, it is also necessary to obtain the motor rotation speed and the motor working time. The motor working time can be a set working time. For example, if the oil pumping capacity is set to be detected within 1 minute, the motor working time can be 1 minute.

[0066] S2011, determining the theoretical oil pumping capacity of the torque manager in the vehicle based on the oil channel parameters, the friction plate group parameters, the plunger pump parameters, the rotation speed of the motor and the working time of the motor.

[0067] In one embodiment, after obtaining the oil channel parameters, friction plate group parameters, plunger pump parameters, motor rotation speed and motor working time, the theoretical pumping capacity M 理论 It can be calculated according to the following formula:

[0068]

[0069] Among them, the minimum diameter of the torque manager high-pressure oil channel is represented by φ; the working area of ​​the torque manager friction plate group (i.e., the effective area) is represented by P; the number of friction plates of the torque manager is represented by S; the theoretical oil pumping capacity of the torque manager per unit time (1 minute) is represented by M 理论 Indicates; the number of plunger pumps in the torque manager oil pump, represented by K; the working volume of a single plunger pump in the torque manager oil pump, represented by R; the rotation speed of the torque manager motor, represented by V; the working time of the torque manager motor, represented by T, and the unit of T is seconds.

[0070] S202, obtaining a model of the torque manager;

[0071] In one embodiment, the torque manager is often controlled by an ECU (electronic control unit). The system configuration information is obtained by reading relevant data in the ECU to obtain relevant data and model of the torque manager.

[0072] S203, determining a pump oil working loss rate of the torque manager based on the model of the torque manager;

[0073] In one embodiment, when the torque manager works normally (without air mixed in), different torque managers have fixed oil pumping loss rates. The oil pumping loss rate is the energy loss caused by factors such as oil pumping friction, liquid flow resistance, and heat loss during the actual working process of the torque manager. This efficiency loss cannot be completely avoided. The oil pumping loss rate of the torque manager can be calibrated through experiments under normal working conditions, and then the oil pumping loss rate is set to a fixed value to calculate the actual oil pumping capacity of the torque manager.

[0074] S204, determining a first oil pumping capacity of the torque manager based on the oil pumping work loss rate and the theoretical oil pumping capacity;

[0075] In one embodiment, the theoretical oil pumping capacity is the oil pumping capacity calculated according to the current working state and working parameters of the torque manager, and the oil pumping work loss rate is the normal efficiency loss calibrated under normal circumstances. The actual oil pumping capacity of the torque manager, i.e., the first oil pumping capacity, can be obtained by multiplying the theoretical oil pumping capacity by the oil pumping work loss rate. It can be understood that if air is mixed into the torque manager, the loss value of its oil pumping capacity will be much higher than the standard oil pumping capacity calculated by the normal oil pumping work loss rate.

[0076] In a feasible implementation, during the first calibration, the actual oil pumping value of the torque manager can be tested on a test bench, and then the oil pumping working loss rate L can be inferred based on the following formula. This L value is always constant. Later, when calculating the first oil pumping capacity, the L value is substituted into the function and the actual oil pumping capacity is calculated based on the formula.

[0077]

[0078] Among them, the minimum diameter in the high-pressure oil channel of the torque manager is represented by φ; the working area of ​​the torque manager friction plate group (i.e. the effective area) is represented by P; the number of plates in the torque manager friction plate group is represented by S; the oil pumping capacity of the torque manager per unit time (1 minute) is represented by M; the number of plunger pumps in the torque manager oil pump is represented by K; the working volume of a single plunger pump in the torque manager oil pump is represented by R; the rotation speed of the torque manager motor is represented by V; the working time of the torque manager motor is represented by T, and the unit of T is seconds.

[0079] Then, the first oil pumping capacity of the current torque manager is determined according to the oil pumping loss rate of the torque manager, the rotation speed of the motor, the working time of the motor, the oil channel parameters, the friction plate group parameters and the plunger pump parameters, so as to accurately determine the oil pumping capacity of the vehicle.

[0080] S205, when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, continuously detecting the second oil pumping capacity of the torque manager within a preset detection time;

[0081] In one embodiment, the working capacity of the intelligent torque manager, that is, the oil pumping capacity, is monitored in real time. Once the torque manager is found to be insufficient in capacity, the second oil pumping capacity of the torque manager within the preset detection time is tested again according to the preset detection time. It is understandable that the second oil pumping capacity of the torque manager can be obtained multiple times within the preset detection time and compared with the standard oil pumping capacity.

[0082] S206: If the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed a preset threshold within the preset detection time, determine a first exhaust strategy of the torque manager based on the model of the torque manager.

[0083] In one embodiment, if the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed a preset threshold value within the preset detection time, it indicates that air is indeed mixed into the torque manager, and the first exhaust strategy of the torque manager is determined based on the model of the torque manager. Exemplarily, corresponding exhaust strategies can be pre-designed for different models of torque managers, and the exhaust strategies are stored in the vehicle. When the exhaust strategy needs to be used, the first exhaust strategy can be obtained according to the model of the torque manager.

[0084] Specifically, the intelligent torque manager motor can be controlled to automatically run at 2500 rpm for 2 minutes. During this period, if the detected M value (the second oil pumping capacity) still deviates from the standard oil pumping capacity by more than 5%, it means that there is air in the torque manager oil channel and the exhaust strategy needs to be started.

[0085] Optionally, if the detected M value recovers to within 5% of the standard oil pumping capacity within the preset detection time, it means that there is no air in the torque manager oil channel, and there is no need to start the exhaust strategy for the time being. Just continue to monitor according to the normal monitoring logic.

[0086] Further, in one embodiment, the exhaust control method includes the following steps S2061-S2063:

[0087] S2061, determining an estimated oil pumping capacity based on the standard oil pumping capacity;

[0088] Specifically, when determining the first exhaust strategy, an estimated oil pumping capacity that is expected to be required in the execution of the exhaust strategy can be determined based on the standard oil pumping capacity. The estimated oil pumping capacity is usually much larger than the standard oil pumping capacity, so as to achieve sufficient exhaust of the torque manager. Exemplarily, the estimated oil pumping capacity can be determined as five times the standard oil pumping capacity. The setting of five times is the result of the test by the tester, and after setting it to five times, a good exhaust capacity can be achieved.

[0089] S2062, determining a first exhaust operation time and an estimated motor operation speed based on an upper limit operation speed of the motor corresponding to the model of the torque manager and the estimated oil pumping capacity;

[0090] Specifically, the upper limit operating speed of the motor in the torque manager model is obtained, and the motor speed during the exhaust process needs to be set to be less than or equal to the upper limit operating speed of the motor.

[0091] In a feasible implementation, since gas in the torque manager needs to be discharged as quickly as possible, the expected motor speed can be set as the upper limit of the motor speed. The first exhaust operation time required to achieve the expected oil pumping capacity is further determined based on the expected motor speed.

[0092] In another feasible implementation, the estimated motor running speed can be determined in advance according to the default exhaust running time and the estimated oil pumping capacity. It should be noted that, when the default exhaust running time is set, it is necessary to consider that the determined estimated motor running speed cannot exceed the upper limit running speed of the motor. If it exceeds, it is necessary to re-determine the first exhaust running time according to the upper limit running speed of the motor. If it does not exceed, the default exhaust running time is determined as the first exhaust running time.

[0093] For example, during calibration, the motor speed V is expected to be 2500 rpm. If the other parameters of the torque manager remain unchanged, the motor speed V needs to be changed to 5000 rpm to achieve the expected oil pumping capacity because the running time is 3 minutes. Different torque managers are applicable. If the motor size of a torque manager is small and the maximum speed cannot reach 5000 rpm, the motor running time can be extended to achieve the expected oil pumping capacity. For example, the motor is still at 2500 rpm and the running time is extended to 5 minutes.

[0094] S2063: Determine a first exhaust strategy of the torque manager based on the first exhaust operation time and the estimated motor operating speed.

[0095] Specifically, the first exhaust operation time and the expected motor operating speed are determined as a first exhaust strategy for the torque manager, so as to control the motor of the torque manager to achieve exhaust.

[0096] S207, controlling the torque manager to execute the first exhaust strategy;

[0097] Specifically, please refer to the description of step S102 in the above embodiment of the specification, which will not be repeated here. Further, in one embodiment, the exhaust control method includes the following steps S2071-S2073:

[0098] S2071, controlling a preset display area of ​​the vehicle to display a repair prompt message to instruct the driver to park safely;

[0099] In one embodiment, after determining the first exhaust strategy, a repair prompt message is displayed in a preset display area of ​​the vehicle, instructing the driver to park the vehicle safely, and then the first exhaust strategy is executed after the driver parks the vehicle safely. Since executing the exhaust strategy will affect the normal driving function of the vehicle, it is necessary to park the vehicle before executing it. The repair prompt message may indicate the reason for executing the exhaust strategy and the estimated duration of executing the exhaust strategy, so that the driver can better understand the current status of the vehicle. The preset display area is an in-vehicle display area that the driver can easily pay attention to, for example, it can be an instrument panel, a central control screen, a steering wheel display area, and a head-up display (HUD).

[0100] See also Figure 4 , an interface diagram of an exhaust control method is provided for an embodiment of the present specification. Specifically, signal A can be set. When the exhaust strategy does not need to be executed, signal A always sends 0x0 (exhaust is not executed). When the exhaust logic is triggered, signal A first changes to 0x1 (exhaust is executed). This signal has a logical interaction with the vehicle instrument. The instrument will display a text prompt "The four-wheel drive system needs to repair itself, please park safely" for 20 minutes.

[0101] S2072, if it is detected that the vehicle stops within the prompt time of the repair prompt information, controlling the torque manager to execute the first exhaust strategy;

[0102] In one embodiment, the repair prompt information is provided with a prompt time, and the same repair prompt information will be displayed within the prompt time. The prompt time can be set according to actual needs. If the prompt time is too short, the driver may not notice it or may not pay attention to it. Exemplarily, the prompt time can be 20 minutes. If the vehicle stops within the prompt time of the repair prompt information, the torque manager is controlled to execute the first exhaust strategy. Optionally, after the vehicle stops, an exhaust strategy execution confirmation prompt information can also be generated. If the driver determines to execute the exhaust strategy, the torque manager is controlled to execute the first exhaust strategy.

[0103] S2073, when the first exhaust strategy is executed, controlling the preset display area to cancel displaying the repair prompt information;

[0104] In one embodiment, when the first exhaust strategy is executed, it is not necessary to display the repair prompt information in the preset display area. Optionally, the repair completion prompt information can be displayed in the preset display area to transparently transmit the latest vehicle status to the driver.

[0105] See also Figure 5 , an interface diagram of an exhaust control method is provided for an embodiment of the present specification, using the example of step S2051 above, if the customer stops the vehicle within 20 minutes and confirms to execute the exhaust procedure, the four-wheel drive system starts to exhaust, signal A also changes to 0x0, and sends signal B (0x1) to prompt the vehicle instrument "the four-wheel drive system is self-repairing, and it is estimated to take 5 minutes". When the exhaust is completed, signal B changes to (0x0), and the instrument cancels the prompt.

[0106] Optionally, see Figure 6 If the customer does not stop the car within 20 minutes, signal A changes to 0x0, the four-wheel drive system sends signal C (0x1), and the instrument prompts "The four-wheel drive system function is degraded and needs to be self-repaired after safe parking". It continues to be sent until the customer safely parks the car and confirms the execution of the exhaust procedure. Signal C changes to 0x0 and signal B changes to (0x1). The instrument prompts "The four-wheel drive system is self-repairing and it is expected to take 5 minutes". When the exhaust is completed, signal B changes to (0x0) and the instrument cancels the prompt.

[0107] S208 : Determine a second exhaust strategy of the torque manager based on the total oil filling amount of the torque manager, and control the torque manager to execute the second exhaust strategy.

[0108] In one embodiment, since sometimes the mixed air is in the oil cavity, after executing the first exhaust strategy, the second exhaust strategy can also be executed to ensure that the air in the oil cavity and the oil channel can be completely exhausted. The second exhaust strategy of the torque manager is determined according to the total oil filling amount of the torque manager. The total oil filling amount is the total amount of oil in the oil cavity corresponding to the torque manager. The purpose of setting the second exhaust strategy is to ensure that all oil is involved in the operation of the oil channel. Therefore, different total oil filling amounts require different second exhaust strategies.

[0109] Further, in one embodiment, the exhaust control method includes the following steps S2081-S2083:

[0110] S2081, obtaining the plunger pump parameters of the torque manager, the pump oil working loss rate, and the operating speed of the second motor in the first exhaust strategy;

[0111] Specifically, when determining the second exhaust strategy, the plunger pump parameters of the torque manager, the pump oil working loss rate, and the second motor operating speed in the first exhaust strategy are obtained. It is understandable that when exhausting again, the plunger pump parameters and the pump oil working loss rate of the torque manager will not change, and for efficient exhaust, the motor operating speed used in the second exhaust strategy can be determined as the second motor operating speed used in the first exhaust strategy. It should be noted that the second motor operating speed can be the first motor operating speed.

[0112] S2082, determining a second exhaust operation time of the torque manager based on the total oil filling amount, the plunger pump parameter, the pump oil working loss rate and the second motor operating speed;

[0113] Specifically, the second exhaust operation time required to fill at least the torque manager oil passage with the total oil filling amount can be determined according to the total oil filling amount, the plunger pump parameters, the pump oil work loss rate and the second motor operating speed.

[0114] Exemplarily, the second exhaust operation time may be determined according to the following formula:

[0115]

[0116] Among them, the total oil filling volume of the torque manager is represented by N; the number of plunger pumps in the torque manager oil pump is represented by K; the working volume of a single plunger pump in the torque manager oil pump is represented by R; the rotation speed of the torque manager motor is represented by V; the overall efficiency loss (i.e. the pump oil working loss rate) during the operation of the torque manager is represented by L; the working time of the torque manager motor is represented by T, and T is in seconds. Among them, 0.4 is an empirical parameter. The reason for setting it this way is to make the total oil filling volume at least 2.5 times the running volume in the torque manager to ensure that all air is removed.

[0117] S2083: Determine a second exhaust strategy of the torque manager based on the second exhaust operation time and the operating speed of the second motor.

[0118] Specifically, a second exhaust strategy is obtained according to the second exhaust operation time and the second motor operation speed.

[0119] In the embodiments of the present specification, the oil channel parameters, friction plate group parameters, and plunger pump parameters of the torque manager are determined based on the model of the torque manager; the first oil pumping capacity of the torque manager in the vehicle is determined based on the oil pumping loss rate of the torque manager, the rotation speed of the motor, the working time of the motor, the oil channel parameters, the friction plate group parameters, and the plunger pump parameters; when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, the second oil pumping capacity of the torque manager is continuously detected within a preset detection time; if the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed the preset threshold within the preset detection time, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, so as to achieve accurate judgment on the vehicle's oil pumping capacity and whether air is mixed, avoid false detection caused by system failure or system fluctuation, and ensure that air mixing can be accurately detected. Among them, when determining the first exhaust strategy, the expected oil pumping capacity is determined based on the standard oil pumping capacity, the first exhaust operation time and the expected motor operation speed are determined based on the upper limit operation speed of the motor corresponding to the model of the torque manager and the expected oil pumping capacity, the first exhaust strategy of the torque manager is determined based on the first exhaust operation time and the expected motor operation speed, and the torque manager is controlled to execute the first exhaust strategy to allow the oil to fully run in the oil channel to achieve the purpose of removing air. In addition, the second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy. Considering the total oil filling amount of the torque manager, according to the above formula, it can be ensured that all oil participates in the operation of the oil channel and all air can be removed.

[0120] The following will be combined with the attached Figure 7 , the exhaust control device provided in the embodiment of this specification is introduced in detail. It should be noted that the attached Figure 7 The exhaust control device in this manual is used to Figure 2-Figure 6 For the convenience of explanation, only the part related to the embodiment of this specification is shown. For the specific technical details not disclosed, please refer to this specification. Figure 2-Figure 6 The embodiment shown.

[0121] See also Figure 7 , which shows a schematic diagram of the structure of an exhaust control device provided by an exemplary embodiment of this specification. The exhaust control device can be implemented as all or part of the device through software, hardware or a combination of both. The device 1 includes:

[0122] A detection unit 11, configured to determine a first oil pumping capacity of a torque manager in a vehicle;

[0123] a strategy determination unit 12, configured to determine a first exhaust strategy of the torque manager based on a model of the torque manager when a difference between the first oil pumping capacity and a standard oil pumping capacity of the torque manager exceeds a preset threshold; the standard oil pumping capacity is a calibrated value when no air is mixed in the torque manager;

[0124] The exhaust unit 13 is used to control the torque manager to execute the first exhaust strategy.

[0125] Optionally, the detection unit 11 is specifically used to: determine the theoretical oil pumping capacity of the torque manager in the vehicle; obtain the model of the torque manager; determine the oil pumping loss rate of the torque manager based on the model of the torque manager; determine the first oil pumping capacity of the torque manager based on the oil pumping loss rate and the theoretical oil pumping capacity.

[0126] Optionally, the detection unit 11 is specifically used to: determine the oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager based on the model of the torque manager; obtain the rotation speed of the motor in the torque manager and the working time of the motor; determine the theoretical oil pumping capacity of the torque manager in the vehicle based on the oil channel parameters, the friction plate group parameters, the plunger pump parameters, the rotation speed of the motor and the working time of the motor.

[0127] Optionally, the strategy determination unit 12 is specifically used to: when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, continuously detect the second oil pumping capacity of the torque manager within a preset detection time; if within the preset detection time, the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed a preset threshold, then determine the first exhaust strategy of the torque manager based on the model of the torque manager.

[0128] Optionally, the strategy determination unit 12 is specifically used to: determine an expected oil pumping capacity based on the standard oil pumping capacity; determine a first exhaust operating time and an expected motor operating speed based on an upper limit operating speed of the motor corresponding to the model of the torque manager and the expected oil pumping capacity; and determine a first exhaust strategy of the torque manager based on the first exhaust operating time and the expected motor operating speed.

[0129] Optionally, the exhaust unit 13 is further used to determine a second exhaust strategy of the torque manager based on a total oil filling amount of the torque manager, and control the torque manager to execute the second exhaust strategy.

[0130] Optionally, the exhaust unit 13 is specifically used to: obtain the plunger pump parameters of the torque manager, the pump oil working loss rate and the second motor operating speed in the first exhaust strategy; determine the second exhaust operation time of the torque manager based on the total oil filling amount, the plunger pump parameters, the pump oil working loss rate and the second motor operating speed; determine the second exhaust strategy of the torque manager based on the second exhaust operation time and the second motor operating speed.

[0131] Optionally, the exhaust unit 13 is specifically used to: control a preset display area of ​​the vehicle to display repair prompt information to instruct the driver to park safely; if the vehicle is detected to be parked within the prompt time of the repair prompt information, control the torque manager to execute the first exhaust strategy; when the first exhaust strategy is executed, control the preset display area to cancel the display of the repair prompt information.

[0132] It should be noted that the exhaust control device provided in the above embodiment only uses the division of the above functional modules as an example when executing the exhaust control method. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the exhaust control device provided in the above embodiment and the exhaust control method embodiment belong to the same concept, and the implementation process thereof is detailed in the method embodiment, which will not be repeated here.

[0133] The serial numbers of the embodiments of the present specification are for description only and do not represent the advantages and disadvantages of the embodiments. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0134] The embodiment of the present specification also provides a computer storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the above-mentioned Figure 2-Figure 6 The exhaust control method of the embodiment shown in the figure can be found in the specific execution process. Figure 2-Figure 6 The specific description of the illustrated embodiment will not be repeated here.

[0135] Please refer to Figure 8, which shows a schematic diagram of the structure of a vehicle provided by an exemplary embodiment of the present specification. The vehicle in the present specification may include one or more of the following components: a processor 110, a memory 120, an input device 130, an output device 140, and a bus 150. The processor 110, the memory 120, the input device 130, and the output device 140 may be connected via a bus 150.

[0136] The processor 110 may include one or more processing cores. The processor 110 uses various interfaces and lines to connect various parts of the entire vehicle, and executes various functions and processes data of the terminal 100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 120, and calling data stored in the memory 120. Optionally, the processor 110 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 110 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes the operating system, user pages, and applications; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 110, but may be implemented separately through a communication chip.

[0137] The memory 120 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 120 includes a non-transitory computer-readable medium (Non-Transitory Computer-Readable Storage Medium). The memory 120 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 120 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc. The operating system may be an Android system, including a system deeply developed based on the Android system, an IOS system developed by Apple, including a system deeply developed based on the IOS system or other systems.

[0138] The memory 120 can be divided into an operating system space and a user space. The operating system runs in the operating system space, and native and third-party applications run in the user space. In order to ensure that different third-party applications can achieve good operating results, the operating system allocates corresponding system resources to different third-party applications. However, the requirements for system resources in different application scenarios in the same third-party application are also different. For example, in local application scenarios, third-party applications have higher requirements for disk reading speeds; in animation rendering scenarios, third-party applications have higher requirements for GPU performance. The operating system and third-party applications are independent of each other, and the operating system often cannot perceive the current application scenarios of third-party applications in a timely manner, resulting in the operating system being unable to perform targeted system resource adaptation according to the specific application scenarios of third-party applications.

[0139] In order for the operating system to distinguish the specific application scenarios of third-party applications, it is necessary to open up data communication between third-party applications and the operating system so that the operating system can obtain the current scenario information of third-party applications at any time, and then perform targeted system resource adaptation based on the current scenario.

[0140] The input device 130 is used to receive input commands or data, and includes but is not limited to a keyboard, a mouse, a camera, a microphone, or a touch device. The output device 140 is used to output commands or data, and includes but is not limited to a display device and a speaker. In one example, the input device 130 and the output device 140 can be combined, and the input device 130 and the output device 140 are touch screen displays.

[0141] The touch display screen can be designed as a full screen, a curved screen or a special-shaped screen. The touch display screen can also be designed as a combination of a full screen and a curved screen, or a combination of a special-shaped screen and a curved screen, which is not limited in the embodiments of this specification.

[0142] In addition, those skilled in the art will appreciate that the structure of the vehicle shown in the above drawings does not constitute a limitation on the vehicle, and the vehicle may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components. For example, the vehicle also includes components such as a radio frequency circuit, an input unit, a sensor, an audio circuit, a WiFi module, a power supply, and a Bluetooth module, which will not be described in detail here.

[0143] exist Figure 8 In the vehicle shown, the processor 110 may be used to call a computer application stored in the memory 120 and specifically perform the following operations:

[0144] determining a first pumping capacity of a torque manager in a vehicle;

[0145] When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on the model of the torque manager; the standard oil pumping capacity is a calibrated value when no air is mixed in the torque manager;

[0146] The torque manager is controlled to execute the first exhaust strategy.

[0147] In one embodiment, when determining the first oil pumping capacity of the torque manager in the vehicle, the processor 110 specifically performs the following operations:

[0148] Determine the theoretical pumping capacity of the torque manager in the vehicle;

[0149] Obtaining the model of the torque manager;

[0150] determining a pump oil work loss rate of the torque manager based on a model of the torque manager;

[0151] A first oil pumping capacity of the torque manager is determined based on the oil pumping work loss rate and the theoretical oil pumping capacity.

[0152] In one embodiment, when determining the first oil pumping capacity of the torque manager in the vehicle, the processor 110 specifically performs the following operations:

[0153] Determining oil channel parameters, friction plate group parameters, and plunger pump parameters of the torque manager based on the model of the torque manager;

[0154] Acquire the rotation speed of the motor in the torque manager and the working time of the motor;

[0155] A theoretical oil pumping capacity of a torque manager in a vehicle is determined based on the oil channel parameter, the friction plate group parameter, the plunger pump parameter, the rotation speed of the motor, and the operation time of the motor.

[0156] In one embodiment, when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, the processor 110 may perform the following operations when determining the first exhaust strategy of the torque manager based on the model of the torque manager:

[0157] When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, continuously detecting the second oil pumping capacity of the torque manager within a preset detection time period;

[0158] If the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed a preset threshold within the preset detection time, a first exhaust strategy of the torque manager is determined based on the model of the torque manager.

[0159] In one embodiment, when the processor 110 determines the first exhaust strategy of the torque manager based on the model of the torque manager, the processor 110 may specifically perform the following operations:

[0160] determining an estimated oil pumping capacity based on the standard oil pumping capacity;

[0161] Determining a first exhaust operation time and an estimated motor operating speed based on an upper limit operating speed of the motor corresponding to the model of the torque manager and the estimated oil pumping capacity;

[0162] A first exhaust strategy of the torque manager is determined based on the first exhaust operating time and the predicted electric machine operating speed.

[0163] In one embodiment, after controlling the torque manager to execute the first exhaust strategy, the processor 110 may further perform the following operations:

[0164] A second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy.

[0165] In one embodiment, when the processor 110 determines the second exhaust strategy of the torque manager based on the total oil filling amount of the torque manager and controls the torque manager to execute the second exhaust strategy, the processor 110 specifically performs the following operations:

[0166] Acquire the plunger pump parameters of the torque manager, the pump oil working loss rate and the operating speed of the second motor in the first exhaust strategy;

[0167] determining a second exhaust operation time of the torque manager based on the total oil filling amount, the plunger pump parameter, the pump oil work loss rate and the operating speed of the second motor;

[0168] A second exhaust strategy of the torque manager is determined based on the second exhaust operating time and the operating speed of the second electric machine.

[0169] In one embodiment, when the processor 110 controls the torque manager to execute the first exhaust strategy, the processor 110 specifically performs the following operations:

[0170] Controlling a preset display area of ​​the vehicle to display a repair prompt message to instruct the driver to park safely;

[0171] If it is detected that the vehicle is stopped within the prompt time of the repair prompt information, controlling the torque manager to execute the first exhaust strategy;

[0172] When the first exhaust strategy is executed, the preset display area is controlled to cancel displaying the repair prompt information.

[0173] In the embodiment of the specification, by determining the first oil pumping capacity of the torque manager in the vehicle, when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, and the torque manager is controlled to execute the first exhaust strategy. Thus, the air mixed in the torque manager can be automatically detected and exhausted, ensuring the normal use of the vehicle's four-wheel drive function.

[0174] Furthermore, the oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager are determined based on the model of the torque manager; the first oil pumping capacity of the torque manager in the vehicle is determined based on the oil pumping loss rate of the torque manager, the rotation speed of the motor, the working time of the motor, the oil channel parameters, the friction plate group parameters and the plunger pump parameters; when the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, the second oil pumping capacity of the torque manager is continuously detected within a preset detection time; if the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed the preset threshold within the preset detection time, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, so as to achieve accurate judgment on the vehicle's oil pumping capacity and whether air is mixed, avoid false detection caused by system failure or system fluctuation, and ensure that air mixing can be accurately detected. Among them, when determining the first exhaust strategy, the expected oil pumping capacity is determined based on the standard oil pumping capacity, the first exhaust operation time and the expected motor operation speed are determined based on the upper limit operation speed of the motor corresponding to the model of the torque manager and the expected oil pumping capacity, the first exhaust strategy of the torque manager is determined based on the first exhaust operation time and the expected motor operation speed, and the torque manager is controlled to execute the first exhaust strategy to allow the oil to fully run in the oil channel to achieve the purpose of removing air. In addition, the second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy. Considering the total oil filling amount of the torque manager, according to the above formula, it can be ensured that all oil participates in the operation of the oil channel and all air can be removed.

[0175] In addition, the embodiments of this specification provide a computer program product, which includes a computer program. When the computer program is executed by a processor of a vehicle, the processor can at least implement the above-mentioned Figures 2 to 6 An exhaust control method is provided in the illustrated embodiment.

[0176] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the above-mentioned program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the above-mentioned storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0177] The above disclosure is only the preferred embodiment of this specification, which certainly cannot be used to limit the scope of rights of this specification. Therefore, equivalent changes made according to the claims of this specification are still within the scope covered by this specification.

Claims

1. An exhaust control method, characterized in that: The method comprises: determining a first pumping capacity of a torque manager in a vehicle; When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on the model of the torque manager; the standard oil pumping capacity is a calibrated value when no air is mixed in the torque manager; The torque manager is controlled to execute the first exhaust strategy.

2. The method according to claim 1, characterized in that The determining a first pumping capacity of a torque manager in a vehicle includes: Determine the theoretical pumping capacity of the torque manager in the vehicle; Obtaining the model of the torque manager; determining a pump oil working loss rate of the torque manager based on a model of the torque manager; A first oil pumping capacity of the torque manager is determined based on the oil pumping work loss rate and the theoretical oil pumping capacity.

3. The method according to claim 2, characterized in that Determining the theoretical oil pumping capacity of the torque manager in the vehicle includes: Determining oil channel parameters, friction plate group parameters, and plunger pump parameters of the torque manager based on the model of the torque manager; Acquire the rotation speed of the motor in the torque manager and the working time of the motor; A theoretical oil pumping capacity of a torque manager in a vehicle is determined based on the oil channel parameter, the friction plate group parameter, the plunger pump parameter, the rotation speed of the motor, and the operation time of the motor.

4. The method according to claim 1, characterized in that When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on the model of the torque manager includes: When the difference between the first oil pumping capacity and the standard oil pumping capacity of the torque manager exceeds a preset threshold, continuously detecting the second oil pumping capacity of the torque manager within a preset detection time period; If the difference between the second oil pumping capacity and the standard oil pumping capacity continues to exceed a preset threshold within the preset detection time, a first exhaust strategy of the torque manager is determined based on the model of the torque manager.

5. The method according to any one of claims 1 or 4, characterized in that: The determining a first exhaust strategy of the torque manager based on the model of the torque manager includes: determining an estimated oil pumping capacity based on the standard oil pumping capacity; Determining a first exhaust operation time and an estimated motor operating speed based on an upper limit operating speed of the motor corresponding to the model of the torque manager and the estimated oil pumping capacity; A first exhaust strategy of the torque manager is determined based on the first exhaust operating time and the predicted electric machine operating speed.

6. The method according to claim 1, characterized in that After controlling the torque manager to execute the first exhaust strategy, the method further includes: A second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy.

7. The method according to claim 6, characterized in that The determining the second exhaust strategy of the torque manager based on the total oil filling amount of the torque manager, and controlling the torque manager to execute the second exhaust strategy includes: Acquire the plunger pump parameters of the torque manager, the pump oil working loss rate and the operating speed of the second motor in the first exhaust strategy; determining a second exhaust operation time of the torque manager based on the total oil filling amount, the plunger pump parameter, the pump oil work loss rate and the operating speed of the second motor; A second exhaust strategy of the torque manager is determined based on the second exhaust operating time and the operating speed of the second electric machine.

8. The method according to claim 1, characterized in that The controlling the torque manager to execute the first exhaust strategy includes: Controlling a preset display area of ​​the vehicle to display a repair prompt message to instruct the driver to park safely; If it is detected that the vehicle is stopped within the prompt time of the repair prompt information, controlling the torque manager to execute the first exhaust strategy; When the first exhaust strategy is executed, the preset display area is controlled to cancel displaying the repair prompt information.

9. A vehicle, characterized in that: The vehicle comprises: a processor and a memory; wherein the memory stores a computer program, and the computer program is suitable for being loaded by the processor and executing the steps of the method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 8 is implemented.

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