Hybrid vehicle engine torque compensation method and device

Abstract

The application provides a hybrid vehicle engine torque compensation method and device, and belongs to the technical field of hybrid power. When it is detected that there is a difference between the actual torque output by the engine at the current speed and the maximum theoretical torque, that is, the engine output torque does not reach the expectation, the output of the driving motor is timely controlled to increase, so that the torque gap is quickly and accurately compensated, and the power response of the whole vehicle is improved.

Description

Technical Field

[0001] This application relates to the field of hybrid power system technology, and in particular to a method and apparatus for torque compensation of a hybrid vehicle engine. Background Technology

[0002] With the increasing popularity of hybrid vehicles, consumers have begun to pay more attention to the overall driving quality of the vehicle, such as power response and driving smoothness. In this context, torque control and coordination become crucial.

[0003] The engine in a hybrid electric vehicle can be used for either vehicle propulsion or power generation. The maximum allowable torque of the engine at a specific speed can be obtained from its external characteristic curve. This curve is typically obtained under ideal environmental conditions and without any malfunctions. However, in real-world use, issues such as high-temperature knocking or turbocharger system failures can cause a significant deviation between the engine's actual output torque and its maximum allowable torque. This can lead to insufficient vehicle power and impaired responsiveness.

[0004] Existing technologies typically address torque deviation issues through extensive calibration, but this wastes a lot of time and money, and ultimately, torque deviations still exist under different operating conditions, resulting in poor overall vehicle power responsiveness. Summary of the Invention

[0005] In view of this, this application provides a method for torque compensation of a hybrid vehicle engine, which can quickly and accurately compensate for engine torque and improve power responsiveness.

[0006] Specifically, the following technical solutions are included:

[0007] Firstly, this application provides a method for torque compensation in a hybrid electric vehicle engine, the method comprising:

[0008] Detect the actual torque output by the engine at the current speed.

[0009] Obtain the engine's maximum theoretical torque at the current speed.

[0010] Calculate the torque difference between the actual torque and the maximum theoretical torque.

[0011] The output of the control drive motor is increased by the torque difference.

[0012] Alternatively, before detecting the actual torque output by the engine at the current speed, the method further includes:

[0013] Determine if the accelerator pedal opening is greater than the first preset opening and if the driving mode is Sport mode.

[0014] When it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is Sport mode, the step of detecting the actual torque output by the engine at the current speed is then executed.

[0015] Alternatively, after calculating the torque difference between the actual torque and the maximum theoretical torque, the method further includes:

[0016] Determine whether the remaining charge of the power battery is greater than the first preset value.

[0017] When it is determined that the remaining power is greater than the first preset value, the output of the drive motor is controlled to increase the torque difference.

[0018] Optionally, when it is determined that the remaining battery power is greater than the first preset value, the method further includes:

[0019] Determine whether the engine has malfunctioned.

[0020] When the engine is not malfunctioning, the output of the drive motor is controlled to increase the torque difference.

[0021] When the engine fails, the output of the drive motor is controlled to increase by a first sub-torque difference, and the output of the generator is controlled to increase by a second sub-torque difference, wherein the sum of the first sub-torque difference and the second sub-torque difference is equal to the torque difference.

[0022] Alternatively, after the output of the controlled drive motor is increased by the torque difference, the method further includes:

[0023] Determine whether the remaining battery power is less than a second preset value.

[0024] When the remaining power is less than the second preset value, the output of the drive motor is controlled to decrease by the third torque difference, where the second preset value is less than the first preset value.

[0025] On the other hand, this application also provides a torque compensation device for a hybrid vehicle engine, the device comprising:

[0026] The detection module is configured to detect the actual torque output by the engine at the current speed.

[0027] The acquisition module is configured to acquire the maximum theoretical torque of the engine at the current speed.

[0028] The calculation module is configured to calculate the torque difference between the actual torque and the maximum theoretical torque.

[0029] The control module is configured to control the output of the drive motor to increase the torque difference.

[0030] Alternatively, the device may further include:

[0031] The judgment module is configured to determine whether the accelerator pedal opening is greater than a first preset opening and whether the driving mode is sport mode before detecting the actual torque output by the engine at the current speed.

[0032] The detection module is further configured to perform the step of detecting the actual torque output by the engine at the current speed when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode.

[0033] Optionally, the judgment module is further configured to determine whether the remaining charge of the power battery is greater than a first preset value after the calculation module calculates the torque difference between the actual torque and the maximum theoretical torque.

[0034] The control module is also configured to increase the torque difference by controlling the output of the drive motor when it is determined that the remaining power is greater than the first preset value.

[0035] Optionally, the judgment module is further configured to determine whether the engine has malfunctioned when it is determined that the remaining battery power is greater than the first preset value.

[0036] The control module is also configured to control the output of the drive motor to increase the torque difference when the engine is not malfunctioning.

[0037] The control module is further configured to, when the engine malfunctions, control the output of the drive motor to increase by a first sub-torque difference and control the output of the generator to increase by a second sub-torque difference, wherein the sum of the first sub-torque difference and the second sub-torque difference is equal to the torque difference.

[0038] Optionally, the judgment module is further configured to determine whether the remaining power is less than a second preset value after the control module controls the output of the drive motor to increase the torque difference.

[0039] The control module is further configured to control the output of the drive motor to decrease by a third sub-torque difference when the remaining power is less than the second preset value, wherein the second preset value is less than the first preset value.

[0040] By using the hybrid vehicle engine torque compensation method and device provided in this application, when a difference is detected between the actual torque output by the engine at the current speed and the maximum theoretical torque, i.e. the engine output torque does not reach the expected level, the output of the drive motor is promptly increased to quickly and accurately compensate for the torque gap and improve the overall vehicle power response. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A flowchart of a hybrid electric vehicle engine torque compensation method provided in an embodiment of this application;

[0043] Figure 2 Another flowchart of the hybrid vehicle engine torque compensation method provided in the embodiments of this application;

[0044] Figure 3 Another flowchart of the hybrid vehicle engine torque compensation method provided in the embodiments of this application;

[0045] Figure 4 Another flowchart of the hybrid vehicle engine torque compensation method provided in the embodiments of this application;

[0046] Figure 5 This is a structural diagram of a hybrid vehicle engine torque compensation device provided in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] This application provides a torque compensation method for a hybrid electric vehicle engine, which can quickly and accurately compensate for torque shortfalls, improving the overall vehicle power response. This method can be executed by the vehicle controller. Figure 1 As shown, the method includes steps S101, S102, S103, and S104, wherein:

[0049] In step S101, the actual torque output by the engine at the current speed is detected.

[0050] In step S102, the maximum theoretical torque of the engine at the current speed is obtained.

[0051] In step S103, the torque difference between the actual torque and the maximum theoretical torque is calculated.

[0052] In step S104, the output of the control drive motor is increased by the torque difference.

[0053] In some optional embodiments, the method further includes, before detecting the actual torque output by the engine at the current speed:

[0054] Determine if the accelerator pedal opening is greater than the first preset opening and if the driving mode is Sport mode.

[0055] When it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is Sport mode, the step of detecting the actual torque output by the engine at the current speed is then executed.

[0056] In some optional embodiments, after calculating the torque difference between the actual torque and the maximum theoretical torque, the method further includes:

[0057] Determine whether the remaining charge of the power battery is greater than the first preset value.

[0058] When it is determined that the remaining battery power is greater than the first preset value, the output of the drive motor is increased by the torque difference.

[0059] In some optional embodiments, when it is determined that the remaining battery power is greater than a first preset value, the method further includes:

[0060] Determine if the engine is malfunctioning.

[0061] When the engine is not malfunctioning, the output of the drive motor is increased by the torque difference.

[0062] When the engine fails, the output of the drive motor is increased by the first sub-torque difference, and the output of the generator is increased by the second sub-torque difference. The sum of the first sub-torque difference and the second sub-torque difference equals the torque difference.

[0063] In some optional embodiments, after controlling the output of the drive motor to increase the torque difference, the method further includes:

[0064] Determine if the remaining battery power is less than the second preset value.

[0065] When the remaining power is less than the second preset value, the output of the drive motor is reduced by the third torque difference, and the second preset value is less than the first preset value.

[0066] The hybrid vehicle engine torque compensation method provided in this application can be used to compensate for the torque gap quickly and accurately by controlling the output of the drive motor to increase when a difference is detected between the actual torque output by the engine at the current speed and the maximum theoretical torque, i.e., when the engine output torque does not reach the expected level. This improves the overall vehicle power response.

[0067] This application also provides another method for torque compensation in hybrid electric vehicle engines, which can quickly and accurately compensate for torque shortfalls, improving the overall vehicle power response. This method can be executed by the vehicle controller, such as... Figure 2 As shown, the method includes steps S201, S202, S203, S204, S205, S206, S207, and S208, wherein:

[0068] In step S201, it is determined whether the accelerator pedal opening is greater than the first preset opening and whether the driving mode is sport mode.

[0069] Before step S201, the accelerator pedal opening and driving mode can be obtained first. It can be understood that when the accelerator pedal opening is large, it indicates that the driver has a strong demand for power. When the driving mode is sport mode, it indicates that the driver has a high demand for power responsiveness. In this case, if the actual output of the engine cannot meet the demand, torque compensation is appropriate.

[0070] When the judgment result of step S201 is "yes", that is, when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode, step S202 is executed.

[0071] In step S202, the actual torque output by the engine at the current speed is detected.

[0072] It is understandable that the current engine speed can be obtained between steps S201 and S202. The actual torque output by the engine at the current speed can be directly detected by a sensor or calculated using measurable known parameters.

[0073] In step S203, the maximum theoretical torque of the engine at the current speed is obtained.

[0074] Understandably, the current engine speed can be substituted into the engine's external characteristic curve to obtain the engine's maximum theoretical torque at that current speed. The engine's external characteristic curve can be obtained in advance through bench testing and calibration, and it stores the engine's maximum theoretical torque at different engine speeds.

[0075] In step S204, the torque difference between the actual torque and the maximum theoretical torque is calculated.

[0076] Understandably, by calculating the torque difference between the actual torque and the maximum theoretical torque, one can determine how much torque compensation is needed.

[0077] In some optional embodiments, after calculating the torque difference between the actual torque and the maximum theoretical torque in step S204, the method further includes:

[0078] In step S205, it is determined whether the remaining power of the power battery is greater than a first preset value.

[0079] When the judgment result of step S205 is "yes", in other words, when it is determined that the remaining power is greater than the first preset value, step S206 is executed.

[0080] In step S206, the output of the control drive motor is increased by the torque difference.

[0081] It is understandable that, since the embodiments of this application use the output of the drive motor to compensate for the torque gap of the engine, in order for the torque compensation to be successfully completed and to avoid the power battery from running out of power, it is necessary to first determine the remaining power of the power battery. Only when the remaining power is greater than a first preset value will the output of the drive motor be controlled to increase the torque difference.

[0082] In some optional embodiments, when compensating for engine torque by increasing the torque output of the motor, if the motor output increases by a torque difference, this torque difference will adversely affect the driving range. Therefore, in step S205, the user's pre-set minimum required driving range can be obtained, and the real-time predicted driving range can be calculated based on the remaining battery power, the current torque output of the motor, and the torque difference. Only when the real-time predicted driving range is greater than or equal to the minimum required driving range will the output of the drive motor be controlled to increase the torque difference. It is understood that the driving range here refers to the pure electric driving range.

[0083] After controlling the output of the drive motor to increase the torque difference in step S206, the method further includes:

[0084] In step S207, it is determined whether the remaining battery power is less than a second preset value.

[0085] When the judgment result of step S207 is "yes", in other words, when the remaining power is less than the second preset value, step S208 is executed.

[0086] In step S209, the output of the control drive motor is reduced by the third sub-torque difference.

[0087] The second preset value is less than the first preset value.

[0088] Understandably, even if torque compensation is performed using the drive motor, the battery level still needs to be monitored in real time. If the remaining battery level is too low, it indicates a risk of battery depletion, and torque compensation needs to be stopped immediately. The third sub-torque difference can be pre-calibrated according to actual needs, or it can be directly equal to the current motor torque of the drive motor. In other words, by controlling the output of the drive motor to reduce the third sub-torque difference, the drive motor will no longer output torque.

[0089] Using the hybrid vehicle engine torque compensation method provided in this application embodiment, when the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode, it indicates that the power demand is high and torque compensation is required. In this case, if a difference is detected between the actual torque output by the engine at the current speed and the maximum theoretical torque, and the remaining power of the power battery is sufficient, the output of the drive motor is controlled to increase in time, thereby quickly and accurately compensating for the torque gap and improving the overall vehicle power response.

[0090] This application provides a torque compensation method for a hybrid electric vehicle engine, which can quickly and accurately compensate for torque shortfalls, improving the overall vehicle power response. This method can be executed by the vehicle controller. Figure 3 As shown, the method includes steps S301, S302, S303, S304, S305, S306, S307, S308, S309, and S310, wherein:

[0091] In step S301, it is determined whether the accelerator pedal opening is greater than the first preset opening and whether the driving mode is sport mode.

[0092] When the judgment result of step S301 is "yes", that is, when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode, step S302 is executed.

[0093] In step S302, the actual torque output by the engine at the current speed is detected.

[0094] In step S303, the maximum theoretical torque of the engine at the current speed is obtained.

[0095] In step S304, the torque difference between the actual torque and the maximum theoretical torque is calculated.

[0096] In step S305, it is determined whether the remaining power of the power battery is greater than a first preset value.

[0097] When the judgment result of step S305 is "yes", that is, when it is determined that the remaining power is greater than the first preset value, step S306 is executed.

[0098] In step S306, it is determined whether the engine has malfunctioned.

[0099] If the judgment result of step S306 is "no", that is, if the engine has not malfunctioned, then step S307 is executed.

[0100] In step S307, the output of the control drive motor is increased by the torque difference.

[0101] When the judgment result of step S306 is "yes", that is, when the engine malfunctions, step S308 is executed.

[0102] In step S308, the output of the drive motor is controlled to increase the first sub-torque difference, and the output of the generator is controlled to increase the second sub-torque difference.

[0103] The sum of the first sub-torque difference and the second sub-torque difference equals the torque difference.

[0104] Understandably, when the engine malfunctions, both the drive motor and the generator need to output power simultaneously to meet the torque compensation requirements.

[0105] In addition to generating electricity by using the kinetic energy output by the engine or the inertia of the wheels to drive rotation, generators can also output torque when rotating in the reverse direction.

[0106] In some optional embodiments, in order to meet the torque compensation requirements as much as possible, the sum of the first sub-torque difference and the second sub-torque difference can also be greater than the torque difference. Specifically, the sum of the first sub-torque difference and the second sub-torque difference can be equal to the torque difference multiplied by the gain ratio. The gain ratio can be preset and stored, and the gain ratio is greater than 1.

[0107] The relationship between the first sub-torque difference and the second sub-torque difference can be preset and stored. For example, the first sub-torque difference is 9 times the second sub-torque difference.

[0108] In some optional embodiments, steps S309 and S310 are provided after steps S307 and S308.

[0109] In step S309, it is determined whether the remaining battery power is less than a second preset value.

[0110] The second preset value is less than the first preset value.

[0111] When the judgment result of step S309 is "yes", that is, when the remaining power is less than the second preset value, step S310 is executed.

[0112] In step S310, the output of the control drive motor is reduced by the third sub-torque difference.

[0113] The second preset value is less than the first preset value.

[0114] Using the hybrid vehicle engine torque compensation method provided in this application embodiment, when the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode, it indicates that the power demand is high and torque compensation is required. In this case, if a difference is detected between the actual torque output by the engine at the current speed and the maximum theoretical torque, and the remaining power of the power battery is sufficient, then based on whether the engine has malfunctioned, the method can flexibly choose to either control only the output of the drive motor to increase, or control the drive motor and generator to work together to increase the output, thereby quickly and accurately compensating for the torque gap and improving the overall vehicle power response.

[0115] This application also provides another method for torque compensation in hybrid electric vehicle engines, which can quickly and accurately compensate for torque shortfalls based on the driver's required torque, thereby improving the vehicle's power response. This method can be executed by the vehicle controller, such as... Figure 4 As shown, the method includes steps S401, S402, S403, S404, and S405, wherein:

[0116] In step S401, it is determined whether the accelerator pedal opening is greater than the first preset opening and whether the driving mode is sport mode.

[0117] When the judgment result of step S401 is "yes", that is, when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode, step S402 is executed.

[0118] In step S402, the actual torque output by the engine is detected.

[0119] In step S403, the driver's required torque is determined based on the accelerator pedal opening.

[0120] It is understandable that the driver's required torque is directly reflected in the accelerator pedal opening. A table showing the correspondence between accelerator pedal opening and required torque can be stored in advance, so that the driver's required torque can be determined directly based on the accelerator pedal opening.

[0121] In step S404, the torque difference between the actual torque and the required torque is calculated.

[0122] In step S405, the output of the control drive motor is increased by the torque difference.

[0123] The hybrid vehicle engine torque compensation method provided in this application can be used to compensate for torque shortfall quickly and accurately by controlling the output of the drive motor when a difference is detected between the actual torque output by the engine at the current speed and the torque required by the driver, i.e., when the engine output torque does not meet the driver's expectations. This improves the overall vehicle power response.

[0124] This application also provides a torque compensation device for a hybrid electric vehicle engine, which is installed in the vehicle controller, such as... Figure 5 As shown, the device includes:

[0125] The detection module 501 is configured to detect the actual torque output by the engine at the current speed.

[0126] The acquisition module 502 is configured to acquire the maximum theoretical torque of the engine at the current speed.

[0127] The calculation module 503 is configured to calculate the torque difference between the actual torque and the maximum theoretical torque.

[0128] The control module 504 is configured to control the output of the drive motor to increase the torque difference.

[0129] In some alternative embodiments, the apparatus further includes:

[0130] The judgment module 505 is configured to determine whether the accelerator pedal opening is greater than a first preset opening and whether the driving mode is sport mode before detecting the actual torque output by the engine at the current speed.

[0131] The detection module 501 is also configured to perform the step of detecting the actual torque output by the engine at the current speed when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode.

[0132] In some optional embodiments, the judgment module 505 is further configured to determine whether the remaining charge of the power battery is greater than a first preset value after the calculation module 503 calculates the torque difference between the actual torque and the maximum theoretical torque.

[0133] The control module 504 is also configured to increase the torque difference in the output of the drive motor when it is determined that the remaining power is greater than a first preset value.

[0134] In some optional embodiments, the detection module 501 is further configured to detect whether the engine has malfunctioned when the judgment module determines that the remaining battery power is greater than a first preset value.

[0135] The control module 504 is also configured to control the output of the drive motor to increase the torque difference when the engine is not malfunctioning.

[0136] The control module 504 is also configured to, when an engine failure occurs, control the output of the drive motor to increase a first sub-torque difference and control the output of the generator to increase a second sub-torque difference, wherein the sum of the first sub-torque difference and the second sub-torque difference is equal to the torque difference.

[0137] In some optional embodiments, the determination module 505 is further configured to determine whether the remaining power is less than a second preset value after the control module 504 controls the output of the drive motor to increase the torque difference.

[0138] The control module 504 is also configured to control the output of the drive motor to decrease by a third sub-torque difference when the remaining power is less than a second preset value, wherein the second preset value is less than a first preset value.

[0139] The hybrid vehicle engine torque compensation device provided in this application can promptly control the output of the drive motor to increase when a difference is detected between the actual torque output by the engine at the current speed and the maximum theoretical torque, i.e., when the engine output torque does not reach the expected level. This allows for quick and accurate compensation of the torque gap, thereby improving the overall vehicle power response.

[0140] This embodiment and the method embodiment are based on the same inventive concept and are device embodiments corresponding to the method embodiments. Therefore, those skilled in the art should understand that the description of the method embodiment is also applicable to this embodiment, and some technical details will not be described in detail in this embodiment.

[0141] This application also provides a vehicle including the hybrid vehicle engine torque compensation device provided in the previous embodiment.

[0142] In this application, it should be understood that the terms “first”, “second”, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0143] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0144] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0145] The above description is only for the purpose of enabling those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for torque compensation in a hybrid electric vehicle engine, characterized in that, The method includes: Detect the actual torque output by the engine at the current speed; Obtain the engine's maximum theoretical torque at the current engine speed; Calculate the torque difference between the actual torque and the maximum theoretical torque; Determine whether the remaining charge of the power battery is greater than a first preset value; When it is determined that the remaining battery power is greater than the first preset value, it is determined whether the engine has malfunctioned; When the engine is not malfunctioning, the output of the drive motor is increased by the torque difference. When the engine fails, the output of the drive motor is controlled to increase by a first sub-torque difference, and the output of the generator is controlled to increase by a second sub-torque difference, wherein the sum of the first sub-torque difference and the second sub-torque difference is equal to the torque difference.

2. The method according to claim 1, characterized in that, Before detecting the actual torque output by the engine at the current speed, the method further includes: Determine whether the accelerator pedal opening is greater than the first preset opening and whether the driving mode is Sport mode; When it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is Sport mode, the step of detecting the actual torque output by the engine at the current speed is then executed.

3. The method according to claim 1, characterized in that, After the output of the controlled drive motor is increased by the torque difference, the method further includes: Determine whether the remaining battery power is less than a second preset value; When the remaining power is less than the second preset value, the output of the drive motor is controlled to decrease by a third sub-torque difference, where the second preset value is less than the first preset value.

4. A torque compensation device for a hybrid electric vehicle engine, characterized in that, The device includes: The detection module is configured to detect the actual torque output by the engine at the current speed; The acquisition module is configured to acquire the maximum theoretical torque of the engine at the current speed; The calculation module is configured to calculate the torque difference between the actual torque and the maximum theoretical torque; The control module is configured to control the output of the drive motor to increase the torque difference. The device further includes a judgment module, configured to determine whether the remaining charge of the power battery is greater than a first preset value after the calculation module calculates the torque difference between the actual torque and the maximum theoretical torque. The control module is further configured to, when it is determined that the remaining battery power is greater than the first preset value, control the output of the drive motor to increase the torque difference. The judgment module is further configured to determine whether the engine has malfunctioned when it is determined that the remaining power is greater than the first preset value. The control module is also configured to control the output of the drive motor to increase the torque difference when the engine is not malfunctioning. The control module is further configured to, when the engine malfunctions, control the output of the drive motor to increase by a first sub-torque difference and control the output of the generator to increase by a second sub-torque difference, wherein the sum of the first sub-torque difference and the second sub-torque difference is equal to the torque difference.

5. The apparatus according to claim 4, characterized in that, The judgment module is further configured to determine whether the accelerator pedal opening is greater than a first preset opening and whether the driving mode is sport mode before detecting the actual torque output by the engine at the current speed. The detection module is further configured to perform the step of detecting the actual torque output by the engine at the current speed when it is determined that the accelerator pedal opening is greater than the first preset opening and the driving mode is sport mode.

6. The apparatus according to claim 4, characterized in that: The judgment module is further configured to determine whether the remaining power is less than a second preset value after the control module controls the output of the drive motor to increase the torque difference. The control module is further configured to control the output of the drive motor to decrease by a third sub-torque difference when the remaining power is less than the second preset value, wherein the second preset value is less than the first preset value.

Images