Exhaust control method, device, vehicle, and storage medium

Abstract

The application provides an exhaust control method and device, a vehicle and a storage medium. The method is applied to the computer field and includes the following steps: determining a first pumping capacity of a torque manager in a vehicle; when a difference between the first pumping capacity and a standard pumping capacity of the torque manager exceeds a preset threshold, determining a first exhaust strategy of the torque manager based on a model of the torque manager; and controlling the torque manager to execute the first exhaust strategy. In this way, the air mixed into the torque manager can be accurately determined by detecting the pumping capacity, and the exhaust strategy can be accurately determined according to the model of the torque manager, so that the air mixed into the torque manager is discharged, and the four-wheel drive function of the vehicle is ensured to be normally used.

Description

TECHNICAL FIELD

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

[0002] The intelligent torque manager is a part that can realize the switching between two-wheel drive and four-wheel drive in a four-wheel drive system. In a vehicle with a horizontally arranged engine, the intelligent torque manager is generally located at the front end 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 a role in differential between axles.

[0003] The vehicle with the intelligent torque manager belongs to an intelligent four-wheel drive system vehicle. The intervention and withdrawal of the four-wheel drive function, as well as the intervention degree, are all realized autonomously by the vehicle and do not require special operation by the driver. During the design and development stage of the vehicle, the four-wheel drive system is calibrated according to the specific parameters of the vehicle and the actual vehicle state, so that the four-wheel drive system can better exert its own advantages.

[0004] However, in some actual situations, the degree of intervention of the four-wheel drive system cannot reach the required degree, and the torque of the four-wheel drive system is obviously smaller than the torque required by the vehicle. The reason is that air has been mixed into the oil passage of the torque manager. SUMMARY

[0005] The present application provides an exhaust control method and device, a vehicle and a storage medium, aiming to solve the problem of reduced four-wheel drive function caused by air mixed into the oil passage of the torque manager. The technical solution is as follows:

[0006] In a first aspect, an exhaust control method is provided, which comprises:

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

[0008] when the difference between the first pump oil capacity and a standard pump oil 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 pump oil capacity is a calibration value when no air is mixed into the torque manager;

[0009] controlling the torque manager to execute the first exhaust strategy.

[0010] In the above technical solution, an exhaust control method is provided, which determines whether to execute an exhaust strategy for the torque manager by detecting whether the first pump oil capacity of the torque manager is lower than the standard pump oil capacity, wherein the first pump oil capacity is the current pump oil capacity of the torque manager. In addition, the exhaust strategy is confirmed for different models of the torque manager, which improves the determination accuracy of the exhaust strategy, so as to fully exhaust the air mixed into the torque manager and ensure the normal use of the four-wheel drive function of the vehicle.

[0011] In some possible implementation manners, the determining the first pump oil capability of the torque manager in the vehicle comprises: determining a theoretical pump oil capability of the torque manager in the vehicle; obtaining a model of the torque manager; determining a pump oil working loss rate of the torque manager based on the model of the torque manager; and determining the first pump oil capability of the torque manager based on the pump oil working loss rate and the theoretical pump oil capability.

[0012] In the technical solution, the implementation manner of determining the pump oil capability of the torque manager is provided. In actual work, the pump oil working loss of the torque manager is caused by factors such as friction of pump oil, flow resistance of liquid, and heat loss. Therefore, when the first pump oil capability of the torque manager is determined, the pump oil working loss rate of the torque manager in the normal working state is determined based on the model of the torque manager, and the first pump oil capability of the torque manager is calculated together with the theoretical pump oil capability of the torque manager. In this way, the first pump oil capability can be calculated more accurately by considering the normal working loss of the torque manager.

[0013] In some possible implementation manners, the determining the theoretical pump oil capability of the torque manager comprises: determining oil channel parameters, friction plate group parameters, and plunger pump parameters of the torque manager based on the model of the torque manager; obtaining a rotating speed of a motor in the torque manager and a working time of the motor; and determining the theoretical pump oil capability of the torque manager based on the oil channel parameters, the friction plate group parameters, the plunger pump parameters, the rotating speed of the motor, and the working time of the motor.

[0014] In the technical solution, the implementation manner of determining the theoretical pump oil capability of the torque manager is provided. Because the models of the torque managers installed in different vehicles are different, the pump oil capabilities of different torque managers are also different. Therefore, the oil channel parameters, the friction plate group parameters, and the plunger pump parameters of the torque manager can be determined based on the model of the torque manager, and then the theoretical pump oil capability of the torque manager can be accurately determined based on the rotating speed of the motor, the working time of the motor, the oil channel parameters, the friction plate group parameters, and the plunger pump parameters.

[0015] In some possible implementation manners, when the difference between the first pump oil capability and the standard pump oil capability of the torque manager exceeds the preset threshold value, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, comprising: when the difference between the first pump oil capability and the standard pump oil capability of the torque manager exceeds the preset threshold value, continuously detecting a second pump oil capability of the torque manager within a preset detection time length; and if the difference between the second pump oil capability and the standard pump oil capability continuously exceeds the preset threshold value within the preset detection time length, determining the first exhaust strategy of the torque manager based on the model of the torque manager.

[0016] In the technical solution, a specific implementation of the self-checking strategy is provided. When the difference between the first pumping capacity and the standard pumping capacity of the torque manager exceeds the preset threshold for the first time, the difference is continuously detected for a preset detection duration. If the second pumping capacity of the torque manager is still lower than the standard pumping capacity by more than the preset threshold in the preset detection duration, it indicates that there is air in the oil passage of the torque manager, and the first air exhausting strategy needs to be started. By setting the continuous detection, false detection caused by system failure or system fluctuation can be avoided, and the mixing of air can be accurately detected.

[0017] In combination with the first aspect, in some possible implementation manners, the first air exhausting strategy of the torque manager is determined based on the model of the torque manager, including: determining a predicted pumping capacity based on the standard pumping capacity; determining a first air exhausting operation time and a predicted motor operating speed based on the upper limit operating speed of the motor corresponding to the model of the torque manager and the predicted pumping capacity; and determining the first air exhausting strategy of the torque manager based on the first air exhausting operation time and the predicted motor operating speed.

[0018] In the technical solution, a specific determination manner of the first air exhausting strategy is provided. It can be understood that when the torque manager performs air exhausting, the motor is mainly rotated, and the physical vacuum generated by rotation is used to drive the oil pump to pump oil. The oil flows in the oil passage in a large range and at a high speed, and drives the air to be exhausted. Therefore, the first air exhausting strategy mainly needs to determine the motor speed and the operation time. The predicted pumping capacity required for performing the air exhausting strategy is determined based on the standard pumping capacity of the torque manager. The predicted pumping capacity refers to the total pumping capacity required for the torque manager to provide when the first air exhausting strategy is performed. According to the predicted pumping capacity and the upper limit operating speed of the motor corresponding to the current model of the torque manager, the first air exhausting operation time required for completing the predicted pumping capacity and the predicted motor operating speed are determined. The predicted motor operating speed cannot exceed the upper limit operating speed of the motor. The first air exhausting strategy of the torque manager is determined according to the first air exhausting operation time and the predicted motor operating speed, so as to realize self-air exhausting of the torque manager.

[0019] In combination with the first aspect, in some possible implementation manners, after the torque manager performs the first air exhausting strategy, the method further includes: determining a second air exhausting strategy of the torque manager based on the total oil filling amount of the torque manager, and controlling the torque manager to perform the second air exhausting strategy.

[0020] In the technical solution, a self-checking strategy after the execution of the exhaust strategy, that is, a second exhaust strategy, is proposed to ensure complete exhaust. The torque manager corresponds to an oil cavity, and the total oil filling amount of the torque manager, that is, the total amount of oil in the oil cavity, is used to determine the second exhaust strategy again, so that all the oil is operated at least once in the torque manager, and it is ensured that the air in the oil cavity and the oil passage can be completely exhausted.

[0021] In combination with the first aspect, in some possible implementation manners, the second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, the torque manager is controlled to execute the second exhaust strategy, and the method comprises the following steps: obtaining a plunger pump parameter, a pump oil working loss rate, and a second motor operating speed in the first exhaust strategy of the torque manager; 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; and determining the second exhaust strategy of the torque manager based on the second exhaust operation time and the second motor operating speed.

[0022] In the technical solution, a specific determination manner of the second exhaust strategy is proposed. The plunger pump parameter, the pump oil working loss rate, and the second motor operating speed in the first exhaust strategy of the torque manager are obtained. The second motor operating speed is the rotating speed used when the first exhaust strategy is executed. The second exhaust operation time of the torque manager is determined based on the total oil filling amount, the pump oil working loss rate, and the second motor operating speed. The second exhaust strategy is obtained based on the second exhaust operation time and the second motor operating speed. The second motor operating speed determined in the first exhaust strategy is used to save the calculation amount of the determination of the motor operating speed, so as to quickly determine the second exhaust strategy. The second exhaust strategy is determined in this way, and the problem that only part of the air is exhausted, resulting in frequent repeated exhaust, is avoided.

[0023] In combination with the first aspect, in some possible implementation manners, the torque manager is controlled to execute the first exhaust strategy, and the method comprises the following steps: controlling a preset display area of the vehicle to display a repair prompt information to instruct the driver to safely stop the vehicle; if the vehicle is detected to be stopped within a prompt time of the repair prompt information, the torque manager is controlled to execute the first exhaust strategy; and when the execution of the first exhaust strategy is completed, the preset display area is controlled to cancel the display of the repair prompt information.

[0024] In the technical solution, after determining that the exhaust strategy needs to be executed, a parking prompt is provided to the user. After determining the first exhaust strategy, a repair prompt message is displayed on a preset display area of the vehicle, instructing the driver to safely park the vehicle, and the first exhaust strategy is executed after the driver safely parks the vehicle, so that the exhaust strategy can be executed in the case of ensuring driving safety, and the repair prompt message is canceled after the first exhaust strategy is executed. By displaying the fault repair prompt message in the preset display area in a timely manner, the driver can more easily understand the running state of the vehicle. Timely and accurate prompt information can improve the trust and satisfaction of the user for the vehicle, reduce uncertainty during driving, and improve the overall use experience of the vehicle.

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

[0026] a detection unit configured to determine a first pump oil capability 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 pump oil capability and a standard pump oil capability of the torque manager exceeds a preset threshold value, the standard pump oil capability being a calibration value when no air is mixed in the torque manager;

[0028] an exhaust unit configured to control the torque manager to execute the first exhaust strategy.

[0029] In a third aspect, the embodiments of the present specification provide a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the steps of the above method are implemented.

[0030] In a fourth aspect, the embodiments of the present specification provide a computer readable storage medium, and the computer readable storage medium stores a computer program, and when the computer program is executed, the steps of the above method are implemented. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is an example schematic diagram of an exhaust control method provided by the embodiments of the present specification;

[0032] Figure 2 is a flowchart of an exhaust control method provided by the embodiments of the present specification;

[0033] Figure 3 is a flowchart of an exhaust control method provided by the embodiments of the present specification;

[0034] Figure 4 is an interface diagram of an exhaust control method provided by the embodiments of the present specification;

[0035] Figure 5 is an interface diagram of an exhaust control method provided by an embodiment of the present specification;

[0036] Figure 6 is an interface diagram of an exhaust control method provided by an embodiment of the present specification;

[0037] Figure 7 is a structural diagram of an exhaust control device provided by an embodiment of the present specification;

[0038] Figure 8 is a structural diagram of a vehicle provided by an embodiment of the present specification. DETAILED DESCRIPTION

[0039] The technical solutions in the present application will be described in detail below with reference to the drawings. In the description of the embodiments of the present specification, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B: "and / or" in the text only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present specification, "multiple" means two or more than two.

[0040] Hereinafter, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.

[0041] In the related art, torque managers can be divided into three forms of electromagnetic, electro-hydraulic and electromechanical according to different basic principles. At present, the commonly used is an electro-hydraulic intelligent torque manager. The electro-hydraulic intelligent torque manager is assembled by main parts such as flange + shell + motor + hydraulic pump + friction plate group + ECU controller and auxiliary parts such as thrust bearing, piston, dust cover, wire harness, etc. The ECU controller of the electro-hydraulic intelligent torque manager monitors the vehicle state and driving signals in real time, calculates the four-wheel drive system torque value according to the internal logic and vehicle-specific calibration value in real time, and automatically converts it into internal instructions to make the motor rotate at the corresponding speed, drive the hydraulic pump to generate a certain hydraulic pressure, and then push the friction plate group to be axially compressed, 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] Please refer to Figure 1 , Figure 1An example schematic diagram of an exhaust control method provided by an embodiment of the present specification. Since the torque manager is assembled in a factory in a normal pressure environment, and the oil cavity of the torque manager is on the rear axle, the torque manager and the rear axle need to be assembled and filled with oil, at which time there is air in the oil passage of the torque manager, and after filling with oil, it cannot be guaranteed that the air in the oil passage will be completely excluded. If air is mixed into the oil passage of the torque manager, there are the following two problems:

[0043] ① After the volume of air increases under its own pressure, the volume can be compressed, which causes the air to be compressed in the relatively sealed oil passage, the volume to decrease, and the hydraulic pressure of the oil to be released objectively, resulting in the oil being unable to form an effective high pressure, and the friction plate group being unable to be compressed to form torque transmission of the four-wheel drive;

[0044] ② The oil pump (hydraulic pump) oil pumping action will pump part of the air instead of oil, and after pumping the air, an effective hydraulic pressure cannot be established, and the risk of air being mixed into the oil passage is increased.

[0045] Based on the above situation, an exhaust control method is provided by an embodiment of the present specification. By comparing the first pump oil capacity of the torque manager with the standard pump oil capacity, it is found whether there is air in the torque manager, when air needs to be discharged, the first exhaust strategy of the torque manager is accurately determined according to the model of the torque manager, the motor is set to rotate by executing the first exhaust strategy, the physical vacuum generated by the rotation is used to drive the oil pump to pump oil, the oil is used to flow in a large range and at a high speed in the oil passage, and the air is discharged, thereby realizing diagnosis and detection of air mixed into the oil passage of the torque manager and exhaust treatment.

[0046] The exhaust control method provided by the present specification will be described in detail below in combination with specific embodiments.

[0047] Figure 2 is a flowchart of an exhaust control method provided by an embodiment of the present specification. As shown in Figure 2 , the method of the embodiment of the present specification can include the following steps S101-S103.

[0048] S101, determining the first pump oil capacity of the torque manager in the vehicle;

[0049] In an embodiment, the pumping capacity of the torque manager refers to the ability to pump liquid within a certain time, usually expressed in flow rate (unit: liters per minute, L / min). The pumping capacity of the torque converter is closely related to factors such as flow rate, pressure, and rotational speed, and has an important influence on the working efficiency and stability of the transmission. In an embodiment, according to the design size of the torque manager hardware, the pumping capacity of the torque manager under normal operation can be calculated. It can be understood that when air is mixed into the oil passage of the torque manager, the pumping capacity will decrease, so the pumping capacity of the torque manager can be detected according to the set time to determine whether there is air mixed into the torque manager. The first pumping capacity can be the pumping capacity detected at the current time, or the pumping capacity detected at any detection time, which is not limited.

[0050] S102, when the difference between the first pumping capacity and the standard 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 an embodiment, the standard pumping capacity is a calibrated value when there is no air mixed into the torque manager. During the first calibration, the torque manager is operated normally to ensure that air is not mixed into the oil, and the actual value of the pumping capacity of the torque manager (standard pumping capacity) is tested on a test bench. The standard pumping capacity reflects the ability of the four-wheel drive system to intervene in the vehicle. Then, the first pumping capacity obtained is compared with the standard pumping capacity to determine the difference between the first pumping capacity and the standard pumping capacity. When the difference between the first pumping capacity and the standard pumping capacity of the torque manager exceeds a preset threshold, it indicates that the torque manager is abnormal at this time. The preset threshold can be set according to actual needs, for example, it can be 5% of the standard pumping capacity.

[0052] Different models of torque managers have different hardware design parameters, so when the motor is rotated to exhaust, the exhaust strategy needs to be confirmed accordingly to improve the accuracy of exhaust control. The model of the torque manager can be determined according to the vehicle model, and the model of the torque manager corresponding to the same vehicle model is usually consistent.

[0053] S103, controlling the torque manager to execute the first exhaust strategy.

[0054] In an embodiment, after the first exhaust strategy is determined, the torque manager is controlled to execute the first exhaust strategy. Specifically, the motor of the torque manager 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 run fully in the oil passage to achieve the purpose of removing air.

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

[0056] In the embodiments of the present application, by determining the first pumping capacity of the torque manager in the vehicle, 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, and the torque manager is controlled to execute the first exhaust strategy. Thus, the mixed air in the torque manager can be automatically detected and discharged, and the normal use of the four-wheel drive function of the vehicle is ensured.

[0057] Please refer to Figure 3 A flowchart of an exhaust control method is provided for the embodiments of the present application. As shown in Figure 3 The method of the embodiments of the present application can include the following steps S201-S208.

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

[0059] In an embodiment, the pumping capacity of the torque manager is mainly related to the displacement and rotational speed of the pump. Therefore, by determining the displacement and rotational speed of the pump in the torque manager, the theoretical pumping capacity of the torque manager can be determined. The theoretical pumping capacity is the pumping capacity determined without considering the normal working consumption of the torque manager. Then, the pumping work loss rate of the torque manager needs to be obtained to calculate the actual pumping capacity. It should be noted that when determining the theoretical pumping capacity, the actual structure of different torque managers also needs to be considered. Different torque managers with different structures may have different calculation methods, which can be determined according to the actual situation.

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

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

[0062] In an embodiment, since the models of the torque managers installed in different vehicles are different, the pumping capacities of different torque managers are also different. Therefore, the oil passage 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] For example, the oil passage parameter can include a minimum diameter in a high-pressure oil passage; the friction plate group parameter can include a working area (i.e., effective action area) of the friction plate group and a number of plates of the friction plate group; and the plunger pump parameter can include a number of plunger pumps in the oil pump and a working volume of a single plunger pump in the oil pump.

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

[0065] It can be understood that, since the pump oil capacity is also related to the motor working parameter, the rotating speed of the motor and the working time of the motor also need to be obtained. The working time of the motor can be a set working time, for example, if the pump oil capacity in 1 minute is detected, the working time of the motor can be 1 minute.

[0066] S2011, determining a theoretical pump oil capacity of the torque manager in the vehicle based on the oil passage parameter, the friction plate group parameter, the plunger pump parameter, the rotating speed of the motor and the working time of the motor.

[0067] In an embodiment, after the oil passage parameter, the friction plate group parameter, the plunger pump parameter, the rotating speed of the motor and the working time of the motor are obtained, the theoretical pump oil capacity M 理论 may be calculated according to the following formula:

[0068]

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

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

[0071] In an embodiment, the torque manager is often controlled by an ECU (Electronic Control Unit). By reading relevant data in the ECU, system configuration information is obtained to obtain relevant data and the 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 an embodiment, the pump oil working loss rate of the torque manager is fixed in the normal working condition (without air mixing). The pump oil working loss rate is the energy loss of the torque manager in the actual working process due to factors such as pump oil friction, liquid flow resistance, heat loss, and the like. The pump oil working loss rate of the torque manager can be calibrated by experiment in the normal working condition, and then the pump oil working loss rate is set as a fixed value for calculating the actual pump oil capacity of the torque manager.

[0074] In S204, a first pump oil capacity of the torque manager is determined based on the pump oil working loss rate and the theoretical pump oil capacity.

[0075] In an embodiment, the theoretical pump oil capacity is the pump oil capacity calculated according to the current working state and working parameters of the torque manager, and the pump oil working loss rate is the normal efficiency loss calibrated in the normal condition. The actual pump oil capacity of the torque manager, i.e., the first pump oil capacity, can be obtained by multiplying the theoretical pump oil capacity by the pump oil working loss rate. It can be understood that if the torque manager mixes air, the loss value of the pump oil capacity will be much higher than the standard pump oil capacity calculated by the normal pump oil working loss rate.

[0076] In a feasible implementation, when calibrated for the first time, the actual value of the pump oil of the torque manager can be tested on a test bench, and then the pump oil working loss rate L is back calculated according to the following formula. The value of L is constant, and then the value of L is brought into the function and the actual pump oil capacity is calculated according to the formula when calculating the first pump oil capacity.

[0077]

[0078] Wherein, the minimum diameter in the high-pressure oil passage of the torque manager is denoted by φ; the working area (i.e., the effective action area) of the torque manager friction plate group is denoted by P; the number of the torque manager friction plate group is denoted by S; the pump oil capacity of the torque manager per unit time (1 minute) is denoted by M; the number of the plunger pump in the torque manager oil pump is denoted by K; the working volume of a single plunger pump in the torque manager oil pump is denoted by R; the rotation speed of the torque manager motor is denoted by V; and the working time of the torque manager motor is denoted by T, and the unit of T is second.

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

[0080] S205, 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 length;

[0081] In an embodiment, the working capacity of the intelligent torque manager, i.e., the pumping capacity, is monitored in real time. Once it is detected that the torque manager has insufficient capacity, the second pumping capacity of the torque manager within a preset detection time length is detected again according to the preset detection time length. It can be understood that the second pumping capacity of the torque manager can be obtained multiple times within the preset detection time length, and compared with the standard pumping capacity.

[0082] S206, if the difference between the second pumping capacity and the standard pumping capacity continues to exceed the preset threshold within the preset detection time length, determining the first exhaust strategy of the torque manager based on the model of the torque manager.

[0083] In an embodiment, if the difference between the second pumping capacity and the standard pumping capacity continues to exceed the preset threshold within the preset detection time length, it indicates that the torque manager indeed has air mixed in. The first exhaust strategy of the torque manager is determined based on the model of the torque manager. For example, the corresponding exhaust strategy can be designed in advance for different models of torque managers, and the exhaust strategy is 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 motor of the intelligent torque manager can be controlled to automatically run at 2500 revolutions per minute for 2 minutes. If it is detected that the M value (second pumping capacity) still deviates from the standard pumping capacity by more than 5% during this period, it indicates that there is air in the oil passage of the torque manager, and the exhaust strategy needs to be started.

[0085] Optionally, if the M value is restored to deviate from the standard pumping capacity by 5% or less within the preset detection time length, it indicates that there is no air in the oil passage of the torque manager, and the exhaust strategy does not need to be started temporarily, and the conventional monitoring logic can be continued to be monitored.

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

[0087] S2061, determining the expected pumping capacity based on the standard pumping capacity;

[0088] Specifically, in determining the first exhaust strategy, a predicted pumping capacity required in the execution of the exhaust strategy can be determined according to the standard pumping capacity. The predicted pumping capacity is usually much larger than the standard pumping capacity, so as to achieve sufficient exhaust of the torque manager. For example, the predicted pumping capacity can be determined as five times of the standard pumping capacity. The setting of five times is the result of test by the tester, and the setting of five times can have good exhaust capacity.

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

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

[0091] In a possible implementation, since the gas in the torque manager needs to be exhausted as soon as possible, the predicted motor running speed can be set as the upper limit motor running speed. The first exhaust running time required to reach the predicted pumping capacity is further determined according to the predicted motor running speed.

[0092] In another possible implementation, a default exhaust running time can be set in advance, and the predicted motor running speed is determined according to the default exhaust running time and the predicted pumping capacity. It should be noted that in the case of setting the default exhaust running time, it is necessary to consider that the determined predicted motor running speed cannot exceed the upper limit motor running speed. If it exceeds, the first exhaust running time needs to be determined again according to the upper limit motor running speed. If it does not exceed, the default exhaust running time is determined as the first exhaust running time.

[0093] For example, the predicted motor running speed V is 2500 revolutions per minute at the time of calibration, and if other parameters of the torque manager remain unchanged, the motor running speed V needs to be changed to 5000 revolutions per minute to reach the predicted pumping capacity target when the running time is 3 minutes. It is considered that different torque managers can be applicable. If the motor size of a certain torque manager is small and the maximum speed cannot reach 5000 revolutions per minute, the motor running time can be extended, and the effect of reaching the predicted pumping capacity can also be achieved, for example, the motor still runs at 2500 revolutions per minute, and the running time is extended to 5 minutes.

[0094] S2063, determining the first exhaust strategy of the torque manager based on the first exhaust running time and the predicted motor running speed.

[0095] Specifically, the first exhaust running time and the predicted motor running speed are determined as the first exhaust strategy for the torque manager, so as to control the motor of the torque manager and 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, which is not repeated here. Further, in an embodiment, the exhaust control method comprises steps S2071-S2073:

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

[0099] In an embodiment, after determining the first exhaust strategy, a repair prompt information is displayed in a preset display area of the vehicle to instruct the driver to safely park, and the first exhaust strategy is executed after the driver safely parks. Since the execution of the exhaust strategy will affect the normal driving function of the vehicle, it needs to be executed after parking. The repair prompt information can prompt the reason for executing the exhaust strategy and the expected duration of executing the exhaust strategy, so that the driver can better understand the current state of the vehicle. The preset display area is a display area in the vehicle that the driver easily pays 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), etc.

[0100] Please refer to Figure 4 An interface schematic diagram of an exhaust control method is provided for the 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 (not execute exhaust), when the exhaust logic is triggered, signal A first becomes 0x1 (execute exhaust), this signal has logical interaction with the vehicle instrument, the instrument will appear the text prompt "four-wheel drive system needs self-repair, please safely park", and the prompt time is 20 minutes.

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

[0102] In an 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 have noticed it or may not take it seriously. Exemplarily, the prompt time can be 20 minutes. If the vehicle is detected to be parked within the prompt time of the repair prompt information, the torque manager is controlled to execute the first exhaust strategy. Alternatively, after the vehicle is parked, an exhaust strategy execution determination 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, the preset display area is controlled to cancel the display of the repair prompt information;

[0104] In an embodiment, when the first exhaust strategy is executed, the repair prompt information does not need to be displayed in the preset display area. Alternatively, repair completion prompt information can be displayed in the preset display area to pass on the latest vehicle state to the driver.

[0105] Please refer to Figure 5 An interface diagram of an exhaust control method is provided for the embodiments of the present specification. If the customer parks within 20 minutes and confirms to execute the exhaust program, the four-wheel drive system starts to exhaust, signal A also changes to 0x0, and signal B (0x1) is sent to prompt the vehicle instrument that "the four-wheel drive system is self-repairing, and it is expected to take 5 minutes". When the exhaust is completed, signal B is changed to (0x0), and the instrument cancels the prompt.

[0106] Alternatively, please refer to Figure 6 If the customer does not park 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". The signal is continuously sent until the customer safely parks and confirms to execute the exhaust program, signal C changes to 0x0, signal B changes to (0x1), and 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 is changed to (0x0), and the instrument cancels the prompt.

[0107] S208, determining a 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.

[0108] In an embodiment, since air is sometimes mixed in the oil cavity, after the first exhaust strategy is executed, the second exhaust strategy can also be executed to ensure that the air in the oil cavity and the oil passage is completely exhausted. The second exhaust strategy of the torque manager is determined based on the total oil filling amount of the torque manager, which 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 participates in the oil passage operation, and therefore different total oil filling amounts need to set different second exhaust strategies.

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

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

[0111] Specifically, in determining the second exhaust strategy, the plunger pump parameter of the torque manager, the pump oil working loss rate and the second motor operating speed in the first exhaust strategy are obtained. It can be understood that the plunger pump parameter of the torque manager and the pump oil working loss rate will not change when re-exhausting, and in order to efficiently 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 the 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 the total oil filling amount at least in the torque manager oil channel can be determined according to the total oil filling amount, the plunger pump parameter, the pump oil working loss rate and the second motor operating speed.

[0114] For example, the second exhaust operation time can be determined according to the following formula:

[0115]

[0116] Wherein, the total oil filling amount 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; and the working time of the torque manager motor is represented by T, with the unit of seconds. Wherein, 0.4 is an empirical parameter, and the reason for setting it is to make the total oil filling amount at least 2.5 times in the torque manager to ensure that all air is exhausted.

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

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

[0119] In the embodiments of the present application, the oil channel parameters, the friction plate set parameters and the plunger pump parameters of the torque manager are determined based on the model of the torque manager, the first pump oil capacity of the torque manager in the vehicle is determined based on the pump oil working 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 set parameters and the plunger pump parameters, when the difference between the first pump oil capacity and the standard pump oil capacity of the torque manager exceeds the preset threshold, the second pump oil capacity of the torque manager is continuously detected within a preset detection time length, if the difference between the second pump oil capacity and the standard pump oil capacity continuously exceeds the preset threshold within the preset detection time length, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, the accurate judgment of the pump oil capacity and whether the air is mixed in the vehicle is realized, the false detection caused by system failure and system fluctuation is avoided, and it is ensured that the air mixing condition can be accurately detected. In the determination of the first exhaust strategy, the expected pump oil capacity is determined based on the standard pump oil capacity, the first exhaust running time and the expected motor running speed are determined based on the upper limit running speed of the motor corresponding to the model of the torque manager and the expected pump oil capacity, the first exhaust strategy of the torque manager is determined based on the first exhaust running time and the expected motor running speed, the torque manager is controlled to execute the first exhaust strategy, the oil liquid is fully operated in the oil channel, and the purpose of excluding the air is achieved. In addition, the second exhaust strategy of the torque manager is determined based on the total oil liquid filling amount of the torque manager, the torque manager is controlled to execute the second exhaust strategy, the total oil liquid filling amount of the torque manager is considered, and according to the above formula, it can be ensured that all oil liquids participate in the oil channel operation, and all air can be excluded.

[0120] The embodiments of the present application will be described below in conjunction with the accompanying drawings Figure 7 The exhaust control device provided by the embodiments of the present application will be described in detail. It should be noted that the exhaust control device in the embodiments of the present application is used to execute the method of the embodiments of the present application, only the parts related to the embodiments of the present application are shown, and the specific technical details not disclosed are referred to the embodiments of the present application shown in the present application. Figure 7 The exhaust control device in the embodiments of the present application is used to execute the method of the embodiments of the present application, only the parts related to the embodiments of the present application are shown, and the specific technical details not disclosed are referred to the embodiments of the present application shown in the present application. Figures 2-6 The exhaust control device in the embodiments of the present application is used to execute the method of the embodiments of the present application, only the parts related to the embodiments of the present application are shown, and the specific technical details not disclosed are referred to the embodiments of the present application shown in the present application. Figures 2-6 The exhaust control device in the embodiments of the present application is used to execute the method of the embodiments of the present application, only the parts related to the embodiments of the present application are shown, and the specific technical details not disclosed are referred to the embodiments of the present application shown in the present application.

[0121] Please refer to Figure 7 , which shows the structure schematic diagram of the exhaust control device provided by an example embodiment of the present application. The exhaust control device can be realized as all or part of the device by software, hardware or combination of the two. The device 1 comprises:

[0122] The detection unit 11 is used to determine the first pump oil capacity of the torque manager in the vehicle;

[0123] The strategy determination unit 12 is 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 pumping capacity and a standard pumping capacity of the torque manager exceeds a preset threshold value, the standard pumping capacity being a calibrated value of the torque manager without air mixing.

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

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

[0126] Optionally, the detection unit 11 is specifically configured to determine an oil channel parameter, a friction plate group parameter and a plunger pump parameter of the torque manager based on the model of the torque manager, obtain a rotating speed of a motor in the torque manager and a working time of the motor, and determine a theoretical pumping capacity of the torque manager in the vehicle based on the oil channel parameter, the friction plate group parameter, the plunger pump parameter, the rotating speed of the motor and the working time of the motor.

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

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

[0129] Optionally, the exhaust unit 13 is further configured 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 perform the second exhaust strategy.

[0130] Optionally, the exhaust unit 13 is specifically configured to: acquire the plunger pump parameter of the torque manager, a pump oil working loss rate and a second motor running speed in the first exhaust strategy; determine a second exhaust running 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 running speed; and determine a second exhaust strategy of the torque manager based on the second exhaust running time and the second motor running speed.

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

[0132] It should be noted that the exhaust control device provided in the above embodiments is only used for example to illustrate the division of the above functional modules, and in actual application, the above functions can be distributed to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the exhaust control device and the exhaust control method provided in the above embodiments belong to the same concept, and the implementation process is detailed in the method embodiments, which will not be described here.

[0133] The above embodiment numbers of the present specification are only for description, and do not represent the advantages or disadvantages of the embodiments. In some cases, the actions or steps recited in the claims can be executed 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, multi-task processing and parallel processing are possible or can be advantageous.

[0134] The present specification also provides a computer storage medium, which stores a computer program. When the computer program is executed by a processor, the exhaust control method of the above Figures 2-6 embodiments is implemented. The specific implementation process can refer to the specific description of the exhaust control method of the above Figures 2-6 embodiments, which will not be described here.

[0135] Please refer to Figure 8Fig. 1 is a structural schematic diagram of a vehicle according to an example embodiment of the present specification. The vehicle in the present specification can 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 can be connected through the bus 150.

[0136] The processor 110 can include one or more processing cores. The processor 110 connects various parts in the entire vehicle through various interfaces and lines, and performs various functions of the terminal 100 and processes data by running or executing instructions, programs, code sets, or instruction sets stored in the memory 120, and calling data stored in the memory 120. Alternatively, the processor 110 can be implemented in at least one of a hardware form of a Digital Signal Processing (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 110 can be integrated with a combination of one or more of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem. Among them, the CPU mainly processes an operating system, a user page, and an application program, etc.; the GPU is responsible for rendering and drawing display content; and the modem is used for processing wireless communication. It can be understood that the above-mentioned modem can also not be integrated into the processor 110, but can be implemented by a separate communication chip.

[0137] The memory 120 can include a Random Access Memory (RAM) and can also include a Read-Only Memory (ROM). Alternatively, the memory 120 includes a non-transitory computer readable storage medium. The memory 120 can be used to store instructions, programs, codes, code sets, or instruction sets. The memory 120 can include a program storage area and a data storage area, wherein the program storage area can store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-mentioned various method embodiments, etc., and the operating system can be an Android system, an IOS system developed by Apple Inc., a system developed based on the Android system or 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 application programs run in the user space. In order to ensure that different third-party application programs can achieve good running effect, the operating system allocates corresponding system resources for different third-party application programs. However, there are also differences in the demand for system resources in different application scenarios in the same third-party application program. For example, in the local application scenario, the third-party application program has a higher requirement for the disk reading speed; in the animation rendering scenario, the third-party application program has a higher requirement for the GPU performance. However, the operating system and the third-party application program are independent of each other, and the operating system often cannot timely perceive the current application scenario of the third-party application program, so that the operating system cannot perform targeted system resource adaptation according to the specific application scenario of the third-party application program.

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

[0140] The input device 130 is configured to receive input instructions or data, and the input device 130 includes but is not limited to a keyboard, a mouse, a camera, a microphone, or a touch device. The output device 140 is configured to output instructions or data, and the output device 140 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 a touch display screen.

[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, a combination of a special-shaped screen and a curved screen, which is not limited in the embodiments of the present application.

[0142] In addition, those skilled in the art can understand that the structure of the vehicle shown in the above figure does not constitute a limitation on the vehicle, and the vehicle can include more or fewer components than the figure, or combine certain components, or different component arrangements. For example, the vehicle also includes radio frequency circuit, input unit, sensor, audio circuit, WiFi module, power supply, Bluetooth module and other components, which are not described here.

[0143] In Figure 8 In the vehicle shown, the processor 110 can be configured to invoke a computer application program stored in the memory 120, and specifically perform the following operations:

[0144] determining a first pump oil capacity of a torque manager in the vehicle;

[0145] determining a first pumping capability of the torque manager in the vehicle based on the model of the torque manager when a difference between the first pumping capability and a standard pumping capability of the torque manager exceeds a preset threshold value; the standard pumping capability being a calibrated value of the torque manager without air mixing;

[0146] controlling the torque manager to perform the first exhaust strategy.

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

[0148] determining a theoretical pumping capability of the torque manager in the vehicle;

[0149] obtaining the model of the torque manager;

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

[0151] determining the first pumping capability of the torque manager based on the pumping work loss rate and the theoretical pumping capability.

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

[0153] determining an oil passage parameter, a friction plate set parameter and a plunger pump parameter of the torque manager based on the model of the torque manager;

[0154] obtaining a rotating speed of a motor in the torque manager and a working time of the motor;

[0155] determining a theoretical pumping capability of the torque manager in the vehicle based on the oil passage parameter, the friction plate set parameter, the plunger pump parameter, the rotating speed of the motor and the working time of the motor.

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

[0157] continuously detecting a second pumping capability of the torque manager within a preset detection duration when the difference between the first pumping capability and the standard pumping capability of the torque manager exceeds the preset threshold value;

[0158] determining the first exhaust strategy of the torque manager based on the model of the torque manager if the difference between the second pumping capability and the standard pumping capability continuously exceeds the preset threshold value within the preset detection duration.

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

[0160] determining a predicted pump oil capacity based on the standard pump oil capacity;

[0161] determining a first exhaust operation time and a predicted motor operating speed based on the motor upper limit operating speed corresponding to the model of the torque manager and the predicted pump oil capacity;

[0162] determining the first exhaust strategy of the torque manager based on the first exhaust operation time and the predicted motor operating speed.

[0163] In one embodiment, the processor 110, after performing the control of the torque manager to execute the first exhaust strategy, can further perform the following operations:

[0164] determining a 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.

[0165] In one embodiment, the processor 110, when performing the determination of 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, can specifically perform the following operations:

[0166] obtaining a plunger pump parameter, a pump oil working loss rate of the torque manager, and a second motor operating speed 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 working loss rate, and the second motor operating speed;

[0168] determining the second exhaust strategy of the torque manager based on the second exhaust operation time and the second motor operating speed.

[0169] In one embodiment, the processor 110, when performing the control of the torque manager to execute the first exhaust strategy, can specifically perform the following operations:

[0170] controlling a preset display area of the vehicle to display a repair prompt information to instruct the driver to safely park;

[0171] if the vehicle is detected to be parked within a 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 the display of the repair prompt information.

[0173] In the embodiments of the present application, by determining the first pumping capacity of the torque manager in the vehicle, 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, and the torque manager is controlled to execute the first exhaust strategy. Thus, the mixed air in the torque manager can be automatically detected and discharged, and the normal use of the four-wheel drive function of the vehicle is ensured.

[0174] Further, by determining the oil channel parameters, the friction plate group parameters and the plunger pump parameters of the torque manager based on the model of the torque manager, determining the first pumping capacity of the torque manager in the vehicle based on the pumping work 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 pumping capacity and the standard pumping capacity of the torque manager exceeds a preset threshold, the second pumping capacity of the torque manager is continuously detected within a preset detection time period. If the difference between the second pumping capacity and the standard pumping capacity continuously exceeds the preset threshold within the preset detection time period, the first exhaust strategy of the torque manager is determined based on the model of the torque manager, the pumping capacity of the vehicle and whether the air is mixed are accurately judged, and the false detection caused by system failure or system fluctuation is avoided, and it is ensured that the mixed air condition can be accurately detected. In determining the first exhaust strategy, the expected pumping capacity is determined based on the standard pumping capacity, the first exhaust running time and the expected motor running speed are determined based on the upper limit running speed of the motor corresponding to the model of the torque manager and the expected pumping capacity, the first exhaust strategy of the torque manager is determined based on the first exhaust running time and the expected motor running speed, and the torque manager is controlled to execute the first exhaust strategy. The oil liquid is fully operated in the oil channel to achieve the purpose of discharging air. In addition, the second exhaust strategy of the torque manager is determined based on the total oil liquid filling amount of the torque manager, and the torque manager is controlled to execute the second exhaust strategy. Considering the total oil liquid filling amount of the torque manager, according to the above formula, it can be ensured that all oil liquids participate in the oil channel operation, and all air can be discharged.

[0175] In addition, the embodiments of the present application provide a computer program product, which includes a computer program. When the computer program is executed by the processor of the vehicle, the processor can at least implement the exhaust control method provided in the foregoing Figures 2 to 6 embodiments.

[0176] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing relevant hardware. The aforementioned program can be stored in a computer readable storage medium, and when the program is executed, the program can include the processes of the above-mentioned embodiment methods. The aforementioned storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM), a random access memory (RAM), or the like.

[0177] The above disclosure is merely preferred embodiments of the present disclosure and cannot limit the scope of the present disclosure. Therefore, equivalent variations made according to the claims of the present disclosure are still within the scope of the present disclosure.

Claims

1. An exhaust gas control method characterized by, The method comprises: determining a theoretical pump oil capacity of a torque manager in a vehicle; obtaining a model of the torque manager; determining a pump oil working loss rate of the torque manager based on the model of the torque manager; determining a first pump oil capacity of the torque manager based on the pump oil working loss rate and the theoretical pump oil capacity; when a difference between the first pump oil capacity and a standard pump oil 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 pump oil capacity is a calibrated value when no air is mixed in the torque manager; controlling the torque manager to execute the first exhaust strategy.

2. The method of claim 1, wherein, The determination of the theoretical pump oil capacity of the torque manager in the vehicle comprises: determining oil channel parameters, friction plate group parameters and plunger pump parameters of the torque manager based on the model of the torque manager; obtaining a rotating speed of a motor in the torque manager and a working time of the motor; determining the theoretical pump oil capacity of the torque manager in the vehicle based on the oil channel parameters, the friction plate group parameters, the plunger pump parameters, the rotating speed of the motor and the working time of the motor.

3. The method of claim 1, wherein, The determination of the first exhaust strategy of the torque manager based on the model of the torque manager when the difference between the first pump oil capacity and the standard pump oil capacity of the torque manager exceeds the preset threshold comprises: when the difference between the first pump oil capacity and the standard pump oil capacity of the torque manager exceeds the preset threshold, continuously detecting a second pump oil capacity of the torque manager within a preset detection time length; if the difference between the second pump oil capacity and the standard pump oil capacity continuously exceeds the preset threshold within the preset detection time length, determining the first exhaust strategy of the torque manager based on the model of the torque manager.

4. The method according to any one of claims 1 or 3, wherein, The determination of the first exhaust strategy of the torque manager based on the model of the torque manager comprises: determining a predicted pump oil capacity based on the standard pump oil capacity; determining a first exhaust running time and a predicted motor running speed based on the motor upper limit running speed corresponding to the model of the torque manager and the predicted pump oil capacity; determining the first exhaust strategy of the torque manager based on the first exhaust running time and the predicted motor running speed.

5. The method of claim 1, wherein, After the control of the torque manager to execute the first exhaust strategy, the method further comprises: determining a second exhaust strategy of the torque manager based on a total oil filling amount of the torque manager, and controlling the torque manager to execute the second exhaust strategy.

6. The method of claim 5, wherein, The determination of the second exhaust strategy of the torque manager based on the total oil filling amount of the torque manager, and the control of the torque manager to execute the second exhaust strategy, comprise: obtaining plunger pump parameters, a pump oil working loss rate and a second motor running speed in the first exhaust strategy of the torque manager; determining a second exhaust running 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 running speed; determining the second exhaust strategy of the torque manager based on the second exhaust running time and the second motor running speed.

7. The method of claim 1, wherein, The control of the torque manager to execute the first exhaust strategy comprises: controlling a preset display area of the vehicle to display a repair prompt information to instruct a driver to stop the vehicle safely; if the vehicle is detected to stop within a prompt time of the repair prompt information, controlling the torque manager to execute the first exhaust strategy; when the first exhaust strategy is executed completely, controlling the preset display area to cancel the display of the repair prompt information.

8. A vehicle characterized by comprising: The vehicle comprises a processor and a memory; wherein the memory stores a computer program, the computer program is suitable for being loaded and executed by the processor to implement the steps of the method in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, when the computer program is executed, the method in any one of claims 1 to 7 is implemented.

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