Engine dragging torque control method and device, electronic equipment and vehicle

Abstract

The invention discloses an engine dragging torque control method and device, electronic equipment and a vehicle. The method comprises the steps that operation parameters of a target vehicle are obtained; the operation parameters comprise the vehicle speed, the wheel slip rate of driving wheels, a driving intention variable, the working state of the integrated brake control system and the operation state of the dragging torque control function; when the operation parameters meet the first preset condition, the dragging torque control function is set to be in an activated state, and torque rising operation is conducted on the target vehicle; when the operation parameters meet a second preset condition, the dragging torque control function is set to be in a balanced state, and torque reduction operation is conducted on the target vehicle; and when the operation parameters meet a third preset condition, the dragging torque control function is set to be in an inactive state. According to the method, the dragging torque is accurately controlled, a balance point is found between energy recovery and wheel locking, the energy utilization efficiency and braking safety of the vehicle are improved, the driving experience is optimized, and the method can be widely applied to the technical field of data processing.

Description

Technical Field

[0001] The present invention relates to the field of data processing technology, and in particular to an engine drag torque control method, device, electronic equipment and vehicle. Background Art

[0002] In the field of modern automotive engineering, with the increasing emphasis on energy efficiency and driving safety, the integrated brake control system (IBC), as a core component of advanced vehicle dynamics control, is playing an increasingly critical role. Especially in new energy vehicles, since the motor is involved in the driving and energy recovery process, higher requirements are placed on the intelligent management of the braking system.

[0003] Traditional braking systems often rely on passive mechanical or hydraulic adjustment methods to deal with wheel locking caused by motor back-drag during energy recovery, which not only has a slow response speed, but also makes it difficult to accurately control traction, thus affecting vehicle stability and energy recovery efficiency. Especially in high-speed driving or emergency braking situations, wheel locking not only impairs the driving experience, but may also cause safety hazards. Summary of the invention

[0004] The present invention aims to solve the problem of related technical limitations at least to a certain extent. To this end, the present invention proposes an engine drag torque control method, device, electronic device and vehicle, which can effectively realize engine drag torque control and provide a better user experience.

[0005] In one aspect, an embodiment of the present invention provides an engine drag torque control method, comprising:

[0006] Obtaining operating parameters of the target vehicle; the operating parameters include vehicle speed, drive wheel slip rate, driving intention variable, operating state of the integrated braking control system, and operating state of the drag torque control function;

[0007] When the operating parameters meet the first preset condition, the drag torque control function is set to an activated state to perform a torque increase operation on the target vehicle;

[0008] When the operating parameters meet the second preset condition, the drag torque control function is set to a balanced state, and a torque reduction operation is performed on the target vehicle;

[0009] When the operating parameters meet the third preset condition, the drag torque control function is set to an inactive state.

[0010] In some embodiments, when the operating parameter is the wheel slip rate of the driving wheel, obtaining the operating parameter of the target vehicle includes the following steps:

[0011] Obtain the wheel speed of each driving wheel of the target vehicle;

[0012] The wheel slip ratio of each driving wheel is obtained based on the ratio of the difference between the vehicle speed and the wheel speed to the vehicle speed.

[0013] In some embodiments, the driving intention variable includes a driving intention change amount, and the driving intention change amount includes a driving intention decrease amount and a driving intention increase amount; when the operating parameter is the driving intention change amount, obtaining the operating parameter of the target vehicle includes the following steps:

[0014] Obtaining a first position change of an accelerator pedal of a target vehicle within a preset period;

[0015] The driving intention reduction amount is determined according to the rising change amount of the first position change amount, and the driving intention increase amount is determined according to the falling change amount of the first position change amount.

[0016] In some embodiments, the driving intention variable includes a braking intention change amount, and the braking intention change amount includes a braking intention reduction amount and a braking intention increase amount; when the operating parameter is the braking intention change amount, obtaining the operating parameter of the target vehicle includes the following steps:

[0017] Obtaining a second position change of a brake pedal of a target vehicle within a preset period;

[0018] The braking intention increase amount is determined according to the descending change amount of the second position change amount, and the braking intention decrease amount is determined according to the ascending change amount of the second position change amount.

[0019] In some embodiments, when the operating parameters meet the first preset condition, the following steps are included:

[0020] When the integrated braking control system is in normal working condition, the vehicle speed is greater than a first vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are greater than a first slip rate threshold, the driving intention variable exceeds a first variable threshold, and the operating state of the drag torque control function is in an inactive state, it is determined that the operating parameters meet the first preset conditions.

[0021] In some embodiments, setting the drag torque control function to an active state comprises the following steps:

[0022] A first state conversion instruction is sent to the integrated brake control system, so that the integrated brake control system converts the drag torque control function from the inactive state to the active state in response to the first state conversion instruction.

[0023] In some embodiments, performing a torque increase operation on a target vehicle includes the following steps:

[0024] Sending a torque increase request to an engine management system of a target vehicle through an integrated brake control system, so that the engine management system controls the engine of the target vehicle to perform a torque increase response action in response to the torque increase request;

[0025] Among them, the torque response action includes increasing the throttle opening and increasing the fuel injection amount.

[0026] In some embodiments, when the operating parameters meet the second preset condition, the following steps are included:

[0027] When the operating state of the drag torque control function is an activated state and the wheel slip rates of the driving wheels on both sides of the target vehicle are both within a preset second slip rate stable range, it is determined that the operating parameters meet the second preset condition.

[0028] In some embodiments, setting the drag torque control function to a balanced state comprises the following steps:

[0029] A second state transition instruction is sent to the integrated brake control system, so that the integrated brake control system transitions the drag torque control function from the activated state to the balanced state in response to the second state transition instruction.

[0030] In some embodiments, performing a torque reduction operation on a target vehicle includes the following steps:

[0031] Sending a torque reduction request to an engine management system of a target vehicle through an integrated brake control system, so that the engine management system controls the engine of the target vehicle to perform a torque reduction response action in response to the torque reduction request;

[0032] Among them, the torque reduction response action includes reducing the throttle opening and reducing the fuel injection amount.

[0033] In some embodiments, the operating parameters further include the working time of the drag torque control function; when the operating parameters meet the third preset condition, the following steps are included:

[0034] When the operating parameters satisfy any of the following conditions: the working state of the integrated braking control system is failure, the vehicle speed is less than the second vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are less than the first slip rate threshold, the driving intention variable exceeds the second variable threshold, the operating state of the drag torque control function is an equilibrium state, or the working time of the drag torque control function exceeds the time threshold, it is determined that the operating parameters meet the third preset condition.

[0035] In some embodiments, setting the drag torque control function to an inactive state comprises the following steps:

[0036] A third state transition instruction is sent to the integrated brake control system, so that the integrated brake control system transitions the drag torque control function from the equilibrium state to the inactive state in response to the third state transition instruction.

[0037] On the other hand, an embodiment of the present invention provides an engine drag torque control device, comprising:

[0038] The first module is used to obtain the operating parameters of the target vehicle; the operating parameters include vehicle speed, driving wheel slip rate, driving intention variable, working state of the integrated braking control system and the operating state of the drag torque control function;

[0039] The second module is used to set the drag torque control function to an activated state and perform a torque increase operation on the target vehicle when the operating parameters meet the first preset condition;

[0040] The third module is used to set the drag torque control function to a balanced state and perform a torque reduction operation on the target vehicle when the operating parameters meet the second preset condition;

[0041] The fourth module is used to set the drag torque control function to an inactive state when the operating parameters meet the third preset condition.

[0042] On the other hand, an embodiment of the present invention provides an electronic device, including: a processor and a memory; the memory is used to store programs; the processor executes the program to implement the above-mentioned engine drag torque control method.

[0043] On the other hand, an embodiment of the present invention provides a computer storage medium, in which a program executable by a processor is stored. When the program executable by the processor is executed by the processor, it is used to implement the above-mentioned engine drag torque control method.

[0044] On the other hand, an embodiment of the present invention provides a vehicle, the vehicle comprising the above-mentioned engine drag torque control device or the above-mentioned electronic device.

[0045] The embodiment of the present invention obtains the operating parameters of the target vehicle; the operating parameters include vehicle speed, driving wheel slip rate, driving intention variable, working state of integrated brake control system and operating state of drag torque control function; when the operating parameters meet the first preset condition, the drag torque control function is set to the activated state, and the target vehicle is subjected to the torque increase operation; when the operating parameters meet the second preset condition, the drag torque control function is set to the balanced state, and the target vehicle is subjected to the torque reduction operation; when the operating parameters meet the third preset condition, the drag torque control function is set to the inactive state. The embodiment of the present invention achieves comprehensive monitoring and intelligent management of vehicle dynamics by accurately obtaining multiple key operating parameters of the target vehicle, including vehicle speed, driving wheel slip rate, driving intention variable, working state of integrated brake control system (IBC) and operating state of drag torque control function. The present invention innovatively proposes to set a balanced state between energy recovery and wheel locking, and achieves at least the following beneficial effects through flexible adjustment of the drag torque control function:

[0046] Optimizing energy recovery and braking safety: Traditional braking systems often face a dilemma when dealing with energy recovery and wheel locking. The present invention monitors operating parameters in real time and dynamically adjusts the state of the drag torque control function according to preset conditions, which not only ensures efficient energy recovery, but also effectively avoids the safety hazards caused by wheel locking, thus achieving dual optimization of energy utilization and braking safety.

[0047] Improve driving experience and stability: By precisely controlling the drag torque, the present invention can respond to driving intentions more delicately, reduce vehicle frustration caused by improper intervention of the braking system, and improve driving smoothness and comfort.

[0048] Enhanced system adaptability and robustness: The present invention can automatically adjust the state of the drag torque control function according to different combinations of operating parameters, showing strong system adaptability and robustness.

[0049] In summary, the technical solution of the present invention finds a balance between energy recovery and wheel locking by accurately controlling the drag torque, which not only improves the vehicle's energy utilization efficiency and braking safety, but also optimizes the driving experience and enhances the adaptability and robustness of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0051] Figure 1 It is a schematic diagram of an implementation environment for engine drag torque control provided by an embodiment of the present invention;

[0052] Figure 2 is a flow chart of an engine drag torque control method provided by an embodiment of the present invention;

[0053] Figure 3 A schematic diagram of an example 1 of the expansion process of step S100 provided in an embodiment of the present invention;

[0054] Figure 4 A schematic diagram of a second example of the expansion process of step S100 provided in an embodiment of the present invention;

[0055] Figure 5 A schematic diagram of a third example of the expansion process of step S100 provided in an embodiment of the present invention;

[0056] Figure 6 A schematic diagram of a flow chart of an operation parameter provided in an embodiment of the present invention satisfying a first preset condition;

[0057] Figure 7A schematic diagram of a process flow in which the operating parameters provided in an embodiment of the present invention meet the third preset condition;

[0058] Figure 8 A schematic diagram of an overall process example of engine drag torque control provided by an embodiment of the present invention;

[0059] Fig. 9 A schematic structural diagram of an engine drag torque control device provided by an embodiment of the present invention;

[0060] Fig.10 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0062] It should be noted that, although the functional modules are divided in the system schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first / S100", "second / S200", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0063] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0064] It is understandable that the engine drag torque control method provided in the embodiment of the present invention can be applied to any computer device with data processing and computing capabilities, and this computer device can be various terminals or servers. When the computer device in the embodiment is a server, the server is an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms. In some embodiments, the terminal is a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited to this.

[0065] like Figure 1 FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the invention. Figure 1 The implementation environment includes at least one terminal 102 and a server 101. The terminal 102 and the server 101 can be connected to a network wirelessly or wired to complete data transmission and exchange.

[0066] Server 101 can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. It can also be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN (Content Delivery Network), as well as big data and artificial intelligence platforms.

[0067] In addition, the server 101 can also be a node server in the blockchain network. Blockchain is a new application model of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanism, and encryption algorithm.

[0068] The terminal 102 may be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, etc. The terminal 102 may also be a vehicle-mounted terminal of various device types described above, but is not limited thereto. The terminal 102 and the server 101 may be directly or indirectly connected via wired or wireless communication, which is not limited in this embodiment of the present invention.

[0069] Based on the example Figure 1In the implementation environment shown, an embodiment of the present invention provides an engine drag torque control method. The following is explained using the engine drag torque control method applied in the server 101 as an example. It can be understood that the engine drag torque control method can also be applied in the terminal 102.

[0070] Reference Figure 2 , Figure 2 The flowchart of the engine drag torque control method applied to the server provided in the embodiment of the present invention, the execution subject of the engine drag torque control method can be any of the aforementioned computer devices (including servers or terminals). Figure 2 , the method may include the following steps:

[0071] S100, obtaining operating parameters of a target vehicle;

[0072] The operating parameters include vehicle speed, drive wheel slip rate, driving intention variable, operating state of integrated brake control system and operating state of drag torque control function;

[0073] It should be understood that both the working state of the integrated brake control system and the operating state of the drag torque control function can be directly obtained by accessing the integrated brake control system.

[0074] It should be noted that in some embodiments, Figure 3 As shown, when the operating parameter is the wheel slip rate of the driving wheel, step S100 may include the following steps: S101, obtaining the wheel speed of each driving wheel of the target vehicle; S102, obtaining the wheel slip rate of each driving wheel according to the ratio of the difference between the vehicle speed and the wheel speed to the vehicle speed.

[0075] For example, in some embodiments, the acquisition of the driving wheel slip rate is generally achieved by:

[0076] Wheel speed sensor: The vehicle will be equipped with a wheel speed sensor to monitor the speed of each wheel in real time. The wheel speed sensor can obtain the wheel speed information of the driving wheels on both sides.

[0077] Vehicle speed calculation: The actual vehicle speed is usually estimated by the wheel speed of the non-driven wheels (such as driven wheels), because the non-driven wheels are closer to a pure rolling state in most cases. At the same time, modern vehicle control systems also combine other sensors (such as accelerometers, GPS, etc.) and vehicle models to estimate the vehicle speed to improve accuracy.

[0078] Slip ratio calculation: After obtaining the wheel speed of the driving wheels on both sides and the actual speed of the vehicle, the slip ratio can be calculated according to the definition formula of the slip ratio. For the driving wheels, the slip ratio calculation formula is usually:

[0079] Slip ratio = [(vehicle speed - wheel speed) / vehicle speed] × 100%;

[0080] The "vehicle speed" here refers to the actual speed of the vehicle, not the wheel speed of the driving wheels.

[0081] Optionally, in some embodiments, the driving intention variable includes a driving intention change amount, and the driving intention change amount includes a driving intention decrease amount and a driving intention increase amount; Figure 4 As shown, when the operating parameter is the driving intention change, step S100 may include the following steps: S111, obtaining the first position change of the accelerator pedal of the target vehicle within a preset period; S112, determining the driving intention decrease according to the rising change of the first position change, and determining the driving intention increase according to the falling change of the first position change.

[0082] Optionally, in some embodiments, the driving intention variable includes a braking intention change amount, and the braking intention change amount includes a braking intention reduction amount and a braking intention increase amount; Figure 5 As shown, when the operating parameter is the change in braking intention, step S100 may include the following steps: S121, obtaining a second position change of the brake pedal of the target vehicle within a preset period; S122, determining an increase in braking intention based on a decreasing change in the second position change, and determining a decrease in braking intention based on an increasing change in the second position change.

[0083] For example, in some embodiments, to obtain the reduction in the driving intention of the vehicle, it is usually necessary to analyze the vehicle's power control system and sensor data. The following are exemplary descriptions of some key steps and methods:

[0084] Driving Intention Recognition:

[0085] The driver's driving intention can be identified using sensor data (such as accelerator pedal position sensor, brake pedal position sensor, steering wheel angle sensor, etc.). These data can reflect the driver's acceleration, deceleration or steering intention in real time.

[0086] If the driving intention indicates a need to reduce power output (such as releasing the accelerator pedal, lightly pressing the brake pedal, or reducing driving force when turning to avoid skidding), the power control system can adjust the engine torque output or brake system intervention accordingly to achieve the driving intention.

[0087] Quantification of driving intention change: The driving intention change can be quantified by comparing the accelerator pedal position before and after adjustment within a preset period.

[0088] Similarly, the change in braking intention can be quantified by comparing the position of the brake pedal before and after adjustment within a preset period.

[0089] In some preferred implementations, advanced algorithms can also be applied: in some advanced vehicle systems, complex algorithms (such as fuzzy control algorithms, neural network algorithms, etc.) can be used to more accurately identify driving intentions and adjust power output. These algorithms can comprehensively consider multiple sensor data to improve recognition accuracy and response speed.

[0090] It should be understood that since different vehicles may have different power control systems and sensor configurations, the specific methods for obtaining the driving intention reduction amount may also be different. In actual applications, adaptive adjustments can be made according to specific application scenarios.

[0091] S200: When the operating parameter meets the first preset condition, the drag torque control function is set to an activated state, and a torque increase operation is performed on the target vehicle;

[0092] It should be noted that in some embodiments, Figure 6 As shown, when the operating parameters meet the first preset conditions, the following steps may be included: when the working state of the integrated braking control system is normal, the vehicle speed is greater than the first vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are greater than the first slip rate threshold, the driving intention variable exceeds the first variable threshold, and the operating state of the drag torque control function is inactive, it is determined that the operating parameters meet the first preset conditions.

[0093] The driving intention variable includes a driving intention reduction amount and a braking intention increase amount. The driving intention variable exceeding a first variable threshold value indicates that the driving intention reduction amount or the braking intention increase amount exceeds a preset variable threshold value.

[0094] For example, in some embodiments, when the IBC is operating normally, the vehicle speed is greater than the threshold for starting the engine drag torque control function, the wheel slip rates on both sides of the driving wheels exceed the threshold, and the driver's driving intention reduction or braking intention increase exceeds the threshold within a certain period of time (the thresholds for the driving intention reduction and the braking intention increase can be set separately), the engine drag torque control function will be triggered, and the engine drag torque control function state can be changed from inactive to active.

[0095] Further, in some embodiments, setting the drag torque control function to an activated state may include the following steps: sending a first state transition instruction to the integrated braking control system so that the integrated braking control system transitions the drag torque control function from an inactivated state to an activated state in response to the first state transition instruction.

[0096] Further, in some embodiments, performing a torque increase operation on a target vehicle may include the following steps: sending a torque increase request to an engine management system of the target vehicle through an integrated braking control system, so that the engine management system controls the engine of the target vehicle to perform a torque increase response action in response to the torque increase request; wherein the torque increase response action includes increasing the throttle opening and increasing the fuel injection amount.

[0097] For example, in some embodiments, when the IBC of the vehicle sends a torque increase request, the actions performed mainly include:

[0098] Increase engine torque output: The IBC sends a torque increase request to the engine management system (EMS). The EMS responds to this request by adjusting the throttle opening, increasing the fuel injection amount, or other means to make the engine output greater torque.

[0099] In some preferred embodiments, a transmission response may also be performed: if the vehicle is equipped with an automatic transmission, the EMS may adjust the transmission state through the transmission control unit (TCU), such as downshifting to increase the gear ratio, thereby more efficiently transmitting the increased torque to the wheels.

[0100] It should be understood that the above description is an exemplary explanation based on the general vehicle power control principle. The IBC system of a specific vehicle and its interaction logic with subsystems such as EMS and TCU may vary depending on the vehicle model, manufacturer and design concept. In actual application, adaptive adjustments can be made.

[0101] S300, when the operating parameter meets the second preset condition, the drag torque control function is set to a balanced state, and a torque reduction operation is performed on the target vehicle;

[0102] It should be noted that, in some embodiments, when the operating parameters meet the second preset condition, the following steps may be included: when the operating state of the drag torque control function is activated and the wheel slip rates of the driving wheels on both sides of the target vehicle are within the preset second slip rate stable range, it is determined that the operating parameters meet the second preset condition.

[0103] For example, in some embodiments, when the wheel slip rate is stable, that is, when there is no risk of wheel locking, the engine drag torque control function state changes from an activated state to a balanced state, and the IBC sends a torque reduction request to increase energy recovery.

[0104] Further, in some embodiments, setting the drag torque control function to a balanced state may include the following steps: sending a second state transition instruction to the integrated braking control system so that the integrated braking control system transitions the drag torque control function from an activated state to a balanced state in response to the second state transition instruction.

[0105] Further, in some embodiments, performing a torque reduction operation on a target vehicle may include the following steps: sending a torque reduction request to an engine management system of the target vehicle through an integrated braking control system, so that the engine management system controls the engine of the target vehicle to perform a torque reduction response action in response to the torque reduction request; wherein the torque reduction response action includes reducing the throttle opening and reducing the amount of fuel injection.

[0106] For example, in some embodiments, when the IBC of the vehicle sends a torque reduction request, the actions performed mainly include:

[0107] Reducing engine torque output: The IBC sends a torque reduction request to the EMS, and the EMS responds to this request by reducing the throttle opening, reducing the amount of fuel injection, etc. to reduce the engine torque output.

[0108] In some preferred implementations, a transmission response may also be performed: during the torque reduction process, the EMS may adjust the transmission state through the TCU, such as upshifting to reduce the transmission ratio and reduce the torque transmitted to the wheels.

[0109] It should be understood that the above description is an exemplary explanation based on the general vehicle power control principle. The IBC system of a specific vehicle and its interaction logic with subsystems such as EMS and TCU may vary depending on the vehicle model, manufacturer and design concept. In actual application, adaptive adjustments can be made.

[0110] S400: When the operating parameters meet the third preset condition, the drag torque control function is set to an inactive state.

[0111] It should be noted that the operating parameters also include the working time of the drag torque control function; in some embodiments, such as Figure 7 As shown, when the operating parameters meet the third preset condition, the following steps are included: when the operating parameters meet any of the following conditions: the working state of the integrated braking control system is failure, the vehicle speed is less than the second vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are less than the first slip rate threshold, the driving intention variable exceeds the second variable threshold, the operating state of the drag torque control function is an equilibrium state, or the working time of the drag torque control function exceeds the time threshold, it is determined that the operating parameters meet the third preset condition.

[0112] The driving intention variable includes an increase in driving intention and a decrease in braking intention. The driving intention variable exceeding a second variable threshold value indicates that the increase in driving intention or the decrease in braking intention exceeds a preset variable threshold value.

[0113] For example, in some embodiments, when the IBC fails to work, or the vehicle speed is less than the engine drag torque control function shutdown threshold, or the engine drag torque control function working time exceeds the threshold, or the driver's driving intention increase or braking intention decrease exceeds the threshold after the DTC works (the thresholds for the driving intention increase and the braking intention decrease can be set separately), or the wheel slip rates on both sides of the driving wheels are lower than the threshold, the engine drag torque control function will be turned off, and the engine drag torque control function state will change from activated to inactivated.

[0114] Further, in some embodiments, setting the drag torque control function to an inactivated state may include the following steps: sending a third state transition instruction to the integrated braking control system so that the integrated braking control system transitions the drag torque control function from an equilibrium state to an inactivated state in response to the third state transition instruction.

[0115] In order to explain the principle of the technical solution of the present invention in detail, the overall process of the present invention is described below in combination with some specific embodiments. It is easy to understand that the following is an explanation of the technical principle of the present invention and cannot be regarded as a limitation of the present invention.

[0116] First of all, it should be noted that engine drag torque control is one of the important functions of IBC. When the vehicle's wheels tend to lock due to motor back-drag during energy recovery, IBC can actively adjust traction to maintain the stability of the vehicle body. However, this method will cause certain losses in energy recovery. In view of this, the present invention aims to set a state between energy recovery and wheel locking to balance energy recovery and wheel locking tendencies.

[0117] like Figure 8 As shown, the process steps of the technical solution of the present invention can be implemented as follows:

[0118] 1. When IBC works normally, the vehicle speed is greater than the threshold for the engine drag torque control function to start, the wheel slip rates on both sides of the driving wheels exceed the threshold, and the driver's driving intention reduction or braking intention increase exceeds the threshold within a certain period of time (the thresholds for driving intention reduction and braking intention increase can be set separately), the engine drag torque control function will be triggered, and the engine drag torque control function state will change from inactive to active;

[0119] 2. When activated, the engine drag torque control function will be triggered, and the IBC will send a torque increase request to reduce the wheel slip rate on both sides of the drive wheel;

[0120] 3. When the wheel slip rate is stable, that is, when there is no risk of wheel locking, the engine drag torque control function state changes from the activated state to the balanced state, and the IBC sends a torque reduction request to increase energy recovery;

[0121] 4. When IBC fails to work, or the vehicle speed is less than the engine drag torque control function shutdown threshold, or the engine drag torque control function working time exceeds the threshold, or the driver's driving intention increase or braking intention decrease exceeds the threshold after DTC works (the thresholds for the driving intention increase and braking intention decrease can be set separately), or the wheel slip rates on both sides of the driving wheels are lower than the threshold, the engine drag torque control function will be turned off, and the engine drag torque control function state will change from activated to inactivated.

[0122] In summary, the technical solution of the present invention is aimed at the integrated braking control system (IBC) when the engine drag torque control function is triggered, in order to reduce the loss of energy recovery in the process, and a new state is added to balance energy recovery and wheel locking tendency. The technical solution of the present invention achieves comprehensive monitoring and intelligent management of vehicle dynamics by accurately obtaining multiple key operating parameters of the target vehicle, including vehicle speed, drive wheel slip rate, driving intention variables, the working state of the integrated braking control system (IBC) and the operating state of the drag torque control function. Through the flexible adjustment of the drag torque control function, the following significant beneficial effects can be achieved:

[0123] Optimizing energy recovery and braking safety: Traditional braking systems often face a dilemma when dealing with energy recovery and wheel locking. This solution monitors operating parameters in real time and dynamically adjusts the state of the drag torque control function according to preset conditions, which not only ensures efficient energy recovery, but also effectively avoids the safety hazards caused by wheel locking, achieving dual optimization of energy utilization and braking safety.

[0124] Improve driving experience and stability: By precisely controlling the drag torque, this solution can respond to driving intentions more delicately, reduce vehicle frustration caused by improper braking system intervention, and improve driving smoothness and comfort. At the same time, precise management of wheel slip rate helps maintain vehicle stability in complex road conditions and improve driving safety.

[0125] Enhanced system adaptability and robustness: This solution can automatically adjust the state of the drag torque control function according to different operating parameter combinations, showing strong system adaptability and robustness. Whether in high-speed driving, low-speed crawling or emergency braking, it can ensure that the vehicle is in the best control state.

[0126] Promoting technological innovation and industrial upgrading: The successful implementation of this plan not only provides a new technical path for the development of integrated brake control systems (IBC), but also brings innovative solutions to the energy management and brake control fields of new energy vehicles. This will help promote technological progress and industrial upgrading of the entire automotive industry, and promote the research and development and application of safer, more efficient and environmentally friendly automotive products.

[0127] In summary, the technical solution of the present invention finds a perfect balance between energy recovery and wheel locking by accurately controlling the drag torque, which not only improves the vehicle's energy utilization efficiency and braking safety, but also optimizes the driving experience, enhances the adaptability and robustness of the system, and makes important contributions to promoting innovation in automotive technology and industrial upgrading.

[0128] On the other hand, Fig. 9 As shown, an embodiment of the present invention provides an engine drag torque control device 900, which may include:

[0129] The first module 901 is used to obtain the operating parameters of the target vehicle; the operating parameters include vehicle speed, driving wheel slip rate, driving intention variable, working state of the integrated braking control system and the operating state of the drag torque control function;

[0130] The second module 902 is used to set the drag torque control function to an activated state and perform a torque increase operation on the target vehicle when the operating parameter meets the first preset condition;

[0131] The third module 903 is used to set the drag torque control function to a balanced state and perform a torque reduction operation on the target vehicle when the operating parameters meet the second preset condition;

[0132] The fourth module 904 is used to set the drag torque control function to an inactive state when the operating parameters meet the third preset condition.

[0133] The contents of the method embodiments of the present invention are all applicable to the device embodiments. The functions specifically implemented by the device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0134] On the other hand, an embodiment of the present invention further provides an electronic device, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the above engine drag torque control method when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a vehicle-mounted computer, etc.

[0135] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0136] like Fig.10 As shown, Fig.10 The hardware structure of an electronic device 1000 of another embodiment is illustrated. The electronic device 1000 may include:

[0137] The processor 1001 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present invention.

[0138] The memory 1002 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1002 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 1002, and the processor 1001 calls and executes the network node population optimization method of the embodiment of the present invention;

[0139] Input / output interface 1003, used to implement information input and output;

[0140] The communication interface 1004 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0141] A bus 1005 , which transmits information between various components of the device (e.g., the processor 1001 , the memory 1002 , the input / output interface 1003 , and the communication interface 1004 );

[0142] The processor 1001 , the memory 1002 , the input / output interface 1003 and the communication interface 1004 are connected to each other in communication within the device via the bus 1005 .

[0143] The electronic device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0144] The contents of the method embodiments of the present invention are all applicable to the electronic device embodiments. The functions specifically implemented by the electronic device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0145] Another aspect of an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a program, and the program is executed by a processor to implement the above method.

[0146] It should be noted that the computer-readable medium shown in the embodiment of the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read to Only Memory, CD to ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, device or device. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer readable signal media may also be any computer readable medium other than computer readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0147] The contents of the method embodiments of the present invention are all applicable to the computer-readable storage medium embodiments. The functions specifically implemented by the computer-readable storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0148] The embodiment of the present invention also discloses a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device can read the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the above method.

[0149] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0150] It should be noted that, although several modules of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0151] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD to ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation of the present invention.

[0152] In some selectable embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the present invention is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Selectable embodiments are expected, wherein the order of various operations is changed and the sub-operation of a part for which is described as a larger operation is performed independently.

[0153] In addition, although the present invention is described in the context of functional modules, it should be understood that, unless otherwise specified, one or more of the functions and / or features can be integrated into a single physical device and / or software module, or one or more functions and / or features can be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding the present invention. More specifically, in view of the properties, functions and internal relationships of the various functional modules in the device disclosed herein, the actual implementation of the module will be understood within the conventional skills of the engineer. Therefore, those skilled in the art can implement the present invention set forth in the claims without excessive experimentation using ordinary techniques. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present invention, which is determined by the full scope of the appended claims and their equivalents.

[0154] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0155] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by an instruction execution device, apparatus or device (such as a computer-based device, a device including a processor, or other device that can fetch instructions from an instruction execution device, apparatus or device and execute the instructions), or in conjunction with such instruction execution device, apparatus or device. For purposes of this specification, "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution device, apparatus or device, or in conjunction with such instruction execution device, apparatus or device.

[0156] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0157] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution device. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0158] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0159] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0160] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An engine drag torque control method, characterized in that: The following steps are involved: Acquiring operating parameters of the target vehicle; the operating parameters include vehicle speed, drive wheel slip rate, driving intention variable, operating state of the integrated braking control system, and operating state of the drag torque control function; When the operating parameter meets the first preset condition, the drag torque control function is set to an activated state to perform a torque increase operation on the target vehicle; When the operating parameter meets the second preset condition, the drag torque control function is set to a balanced state, and a torque reduction operation is performed on the target vehicle; When the operating parameter meets the third preset condition, the drag torque control function is set to an inactive state.

2. The engine drag torque control method according to claim 1, characterized in that: When the operating parameter is the wheel slip rate of the driving wheel, the step of obtaining the operating parameter of the target vehicle comprises the following steps: Obtaining the wheel speed of each driving wheel of the target vehicle; The wheel slip ratio of each of the driving wheels is obtained according to a ratio of a difference between the vehicle speed and the wheel speed to the vehicle speed.

3. The engine drag torque control method according to claim 1, characterized in that: The driving intention variable includes a driving intention change amount, and the driving intention change amount includes a driving intention decrease amount and a driving intention increase amount; When the operating parameter is the driving intention variation, the obtaining of the operating parameter of the target vehicle comprises the following steps: Obtaining a first position change of an accelerator pedal of the target vehicle within a preset period; The driving intention reduction amount is determined according to the rising change amount of the first position change amount, and the driving intention increase amount is determined according to the falling change amount of the first position change amount.

4. The engine drag torque control method according to claim 1, characterized in that: The driving intention variable includes a braking intention change amount, and the braking intention change amount includes a braking intention reduction amount and a braking intention increase amount; when the operating parameter is the braking intention change amount, the obtaining of the operating parameter of the target vehicle includes the following steps: Obtaining a second position change of a brake pedal of the target vehicle within a preset period; The braking intention increase amount is determined according to the decreasing change amount of the second position change amount, and the braking intention decrease amount is determined according to the increasing change amount of the second position change amount.

5. The engine drag torque control method according to claim 1, characterized in that: When the operating parameters meet the first preset condition, the method comprises the following steps: When the working state of the integrated braking control system is normal, the vehicle speed is greater than the first vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are greater than the first slip rate threshold, the driving intention variable exceeds the first variable threshold, and the operating state of the drag torque control function is the inactivated state, it is determined that the operating parameters meet the first preset conditions.

6. The engine drag torque control method according to claim 5, characterized in that: The step of setting the drag torque control function to an activated state comprises the following steps: A first state transition command is sent to the integrated brake control system, so that the integrated brake control system transitions the drag torque control function from the inactive state to the active state in response to the first state transition command.

7. The engine drag torque control method according to claim 1, characterized in that: The torque increasing operation on the target vehicle comprises the following steps: Sending a torque increase request to an engine management system of the target vehicle through the integrated brake control system, so that the engine management system controls the engine of the target vehicle to perform a torque increase response action in response to the torque increase request; The torque increase response action includes increasing the throttle opening and increasing the fuel injection amount.

8. The engine drag torque control method according to claim 1, characterized in that: When the operating parameters meet the second preset condition, the method comprises the following steps: When the operating state of the drag torque control function is the activated state and the wheel slip rates of the driving wheels on both sides of the target vehicle are both within a preset second slip rate stable range, it is determined that the operating parameters meet the second preset condition.

9. The engine drag torque control method according to claim 8, characterized in that: The step of setting the drag torque control function to a balanced state comprises the following steps: A second state transition command is sent to the integrated brake control system, so that the integrated brake control system transitions the drag torque control function from the activated state to the balanced state in response to the second state transition command.

10. The engine drag torque control method according to claim 1, characterized in that: The torque reduction operation on the target vehicle comprises the following steps: Sending a torque reduction request to an engine management system of the target vehicle through the integrated brake control system, so that the engine management system controls the engine of the target vehicle to perform a torque reduction response action in response to the torque reduction request; The torque reduction response action includes reducing the throttle opening and reducing the fuel injection amount.

11. The engine drag torque control method according to claim 1, characterized in that: The operating parameters also include the working time of the drag torque control function; when the operating parameters meet the third preset condition, the steps include: When the operating parameters satisfy any one of the following conditions: the operating state of the integrated braking control system is failure, the vehicle speed is less than the second vehicle speed threshold, the wheel slip rates of the driving wheels on both sides of the target vehicle are less than the first slip rate threshold, the driving intention variable exceeds the second variable threshold, the operating state of the drag torque control function is the equilibrium state, or the working time of the drag torque control function exceeds the time threshold, it is determined that the operating parameters meet the third preset condition.

12. The engine drag torque control method according to claim 11, characterized in that: The step of setting the drag torque control function to an inactive state comprises the following steps: A third state transition command is sent to the integrated brake control system, so that the integrated brake control system transitions the drag torque control function from the equilibrium state to the inactive state in response to the third state transition command.

13. An engine drag torque control device, characterized in that: include: The first module is used to obtain the operating parameters of the target vehicle; the operating parameters include vehicle speed, driving wheel slip rate, driving intention variable, working state of the integrated braking control system and the operating state of the drag torque control function; The second module is used to set the drag torque control function to an activated state and perform a torque increase operation on the target vehicle when the operating parameter meets the first preset condition; A third module is used for setting the drag torque control function to a balanced state and performing a torque reduction operation on the target vehicle when the operating parameter meets a second preset condition; The fourth module is used to set the drag torque control function to an inactive state when the operating parameter meets the third preset condition.

14. An electronic device, characterized in that: including a processor and a memory; The memory is used to store programs; The processor executes the program to implement the method according to any one of claims 1 to 12.

15. A computer storage medium storing a program executable by a processor, characterized in that: The program executable by the processor is used to implement the method according to any one of claims 1 to 12 when executed by the processor.

16. A vehicle, characterized in that: The vehicle includes the engine drag torque control device according to claim 13 or the electronic device according to claim 14.

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