Engine control method and device, vehicle and computer storage medium

Abstract

The invention relates to an engine control method and device, a vehicle and a computer storage medium, and belongs to the technical field of engines, the engine control method comprises the steps that the accelerator state of the vehicle and the running state of a torque related component are obtained, and the torque related component is a component related to engine output torque; when the running state of the torque related part meets the preset engine slow-torque control requirement, slow-torque control is conducted on the output torque of the engine based on the accelerator state; and when the running state of the torque related part does not meet the preset engine slow-torque control requirement, slow-torque control over the output torque of the engine is closed. According to the method, not only is the state of the accelerator considered, but also the requirements of other parts of the vehicle for engine slow-twist control are considered, engine slow-twist control is finer, the stability of vehicle driving under various working conditions is guaranteed, the driving experience is improved, meanwhile, oil consumption can be reduced, and energy can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to an engine control method, device, vehicle and computer storage medium. Background Art

[0002] Engine torque reduction refers to a control technology that slowly controls the output torque of the engine to prevent the engine torque from changing too quickly.

[0003] The existing engine torque reduction technology only controls the vehicle throttle changes, and only reduces the torque change rate when the accelerator is released, without considering the torque reduction control under more working conditions. For example, when the driver brakes, the torque reduction is still in effect, resulting in high fuel consumption, fast brake pad wear, and poor driving experience. When other controllers control the engine torque, the torque and torque reduction controlled by the external controller interfere with each other, resulting in poor driving experience. When shifting gears, the torque reduction causes the engine speed to be too high, fuel consumption to be high, and poor driving experience.

[0004] This shows that the existing engine torque reduction technology cannot take into account various operating conditions of the vehicle, resulting in a poor driving experience. Summary of the invention

[0005] In view of this, it is necessary to provide an engine control method, device, vehicle and computer storage medium to solve the problem that the existing engine torque reduction technology cannot take into account various operating states of the vehicle, resulting in a poor driving experience.

[0006] In order to solve the above problems, the present invention provides an engine control method, comprising: Acquiring a throttle state of the vehicle and an operating state of a torque-related component, wherein the torque-related component is a component related to the engine output torque; When the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is slow torque controlled based on the throttle state; When the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the output torque of the engine is turned off.

[0007] In a possible implementation, when the operating state of the torque-related component meets a preset engine slow torque control requirement, performing slow torque control on the output torque of the engine includes: When the accelerator is depressed and the operating state of the torque-related component meets a preset engine slow torque control requirement, determining the engine target output torque based on the speed and depth at which the accelerator is depressed; Performing slow torque control on the engine until the output torque of the engine reaches the target output torque of the engine; When the accelerator is released and the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is subjected to slow torque control until the output torque of the engine is zero.

[0008] In a possible implementation manner, the torque-associated component further includes a braking component, and when the operating state of the torque-associated component does not meet a preset engine slow torque control requirement, shutting down the slow torque control of the output torque of the engine includes: When the brake component is activated, the output torque of the engine is shut off based on a braking demand of the brake component.

[0009] In a possible implementation, when the engine is in manual gear, the torque-related component further includes a clutch, and when the operating state of the torque-related component does not meet a preset engine slow torque control requirement, shutting down the slow torque control of the output torque of the engine includes: When the clutch is in a disengaged state, the torque output of the engine is shut down.

[0010] In a possible implementation manner, when the engine is in automatic gear, the method includes: The throttle state and the operating state of the torque-related component are sent to an automatic transmission controller, and the engine is controlled based on a control instruction of the automatic transmission controller.

[0011] In a possible implementation manner, the torque-related component further includes a retarder, and when the operating state of the torque-related component does not meet a preset engine slow torque control requirement, shutting down the slow torque control of the output torque of the engine includes: When the retarder is in the activated state, the retarder control on the engine output torque is turned off.

[0012] In a possible implementation manner, the torque-related component further includes a vehicle controller, and the method includes: A control signal of the vehicle controller is obtained, and when the control signal requests to control the output torque of the engine, the slow torque control of the engine is turned off, and the engine is controlled to output the required torque corresponding to the control signal.

[0013] The present invention also provides an engine control device, comprising: A vehicle operation state acquisition module, used to acquire the throttle state of the vehicle and the operation state of the torque-related components, wherein the torque-related components are components related to the engine output torque; A slow torque control module, configured to perform slow torque control on the output torque of the engine based on the throttle state when the operating state of the torque-related component meets a preset engine slow torque control requirement; The non-slow torque control module is used to turn off the slow torque control of the output torque of the engine when the operating state of the torque-related component does not meet the preset engine slow torque control requirement.

[0014] The present invention also provides a vehicle, comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the engine control method described in any one of the above embodiments.

[0015] The present invention also provides a computer-readable storage medium for storing computer-readable programs or instructions, which, when executed by a processor, can implement the steps of the engine control method described in any of the above embodiments.

[0016] The beneficial effects of the present invention are as follows: the engine control method provided by the present invention obtains the throttle state of the vehicle and the operating state of the torque-related components related to the output torque of the engine, and selects to perform slow torque control or non-slow torque control on the output torque of the engine in combination with the throttle state and the operating state of the torque-related components. It not only considers the state of the throttle, but also takes into account the needs of other components of the vehicle for slow torque control of the engine. The slow torque control of the engine is more refined, ensuring the stability of vehicle driving under various working conditions, improving the driving experience, and at the same time being able to reduce fuel consumption and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] FIG1 is a schematic flow chart of an engine control method provided by an embodiment of the present invention; Figure 2 A flowchart of an implementation of S102 provided in an embodiment of the present invention; Figure 3 A comparison diagram of accelerator slow torque control provided by an embodiment of the present invention; Figure 4 A comparison diagram of throttle release slow torque control provided by an embodiment of the present invention; Figure 5A schematic diagram of the structure of an engine control device provided by an embodiment of the present invention; Figure 6 A schematic structural diagram of a vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0020] In the description of the embodiments of the present invention, unless otherwise specified, "multiple" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist at the same time, and B exists alone.

[0021] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0022] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment 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.

[0023] A specific embodiment of the present invention, as Figure 1 As shown, an engine control method is disclosed, comprising: S101, obtaining a throttle state of a vehicle and an operating state of a torque-related component, where the torque-related component is a component related to an engine output torque; S102, when the operating state of the torque-related component meets the preset engine slow torque control requirement, performing slow torque control on the output torque of the engine based on the throttle state; S103: When the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the engine output torque is turned off.

[0024] In an embodiment of the present invention, the engine slow torque control technology refers to a control technology that controls the rate of change of the engine output torque when the engine's required output torque changes rapidly, ensuring that the engine's output torque can change smoothly. The throttle state refers to the state in which the vehicle's throttle is pressed or released, and the torque-related components refer to other components that can affect the engine's output torque other than the throttle, including but not limited to the vehicle's braking components, clutch, transmission controller, and other vehicle controllers. When these torque-related components are in different states, different requirements will be put forward for whether to perform slow torque control on the engine. The present invention determines whether to perform slow torque control on the engine's output torque by the throttle state and the operating state of each torque-related component.

[0025] In an embodiment of the present invention, the preset engine slow torque control requirement refers to a pre-set condition for performing slow torque control on the output torque of the engine. The specific conditions will be described in detail later in the present invention. When the operating state of the torque-related components meets the preset engine slow torque control requirement, it indicates that the output torque of the engine needs to be slow torque controlled. The output torque of the engine can be slowly torque controlled according to the throttle state. Specifically, the output torque of the engine can be smoothly increased or decreased according to whether the throttle is pressed or released to ensure the smoothness of the engine torque change.

[0026] In an embodiment of the present invention, when the operating state of the torque-related component does not meet the preset engine slow-torque control requirement, it indicates that the engine output torque cannot be slow-torque controlled at this time. At this time, no matter what state the throttle is in, the engine output torque should not be slow-torque controlled, but the engine output should be controlled as quickly as possible to achieve the current required torque to ensure a rapid response of the engine.

[0027] The engine control method provided by the present invention obtains the throttle state of the vehicle and the operating state of the torque-related components related to the output torque of the engine, and selects whether to perform slow torque control or non-slow torque control on the output torque of the engine in combination with the throttle state and the operating state of the torque-related components. It not only considers the state of the throttle, but also takes into account the needs of other components of the vehicle for slow torque control of the engine. The engine slow torque control is more refined, ensuring the stability of vehicle driving under various working conditions, improving the driving experience, and at the same time can reduce fuel consumption and save energy.

[0028] As a possible implementation mode of the present invention, in this implementation mode, Figure 2 As shown, when the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is slow torque controlled, including: S201, when the accelerator is depressed and the operating state of the torque-related components meets the preset engine slow torque control requirement, determining the engine target output torque based on the speed and depth at which the accelerator is depressed; S202, performing slow torque control on the engine until the output torque of the engine reaches the target output torque of the engine; S203, when the accelerator is released and the operating state of the torque-related components meets the preset engine slow torque control requirement, the output torque of the engine is slowly torque controlled until the output torque of the engine is zero.

[0029] In an embodiment of the present invention, when the engine is depressed, especially when the engine is depressed quickly in a short period of time with a large amplitude, it means that the vehicle needs to accelerate quickly. Without adopting slow torque control, the output torque of the engine will change dramatically. In order to prevent the engine torque from changing dramatically and causing vehicle shaking, an embodiment of the present invention performs slow torque control on the engine output torque in combination with the operating status of the torque-related components.

[0030] Specifically, Figure 3 The figure shows a comparison of the engine output torque when the accelerator is pressed and when it is not. The target engine output torque is determined based on the speed and depth of the accelerator. If the accelerator reaches 100% in 0.1s, the engine output torque needs to reach 500Nm in 0.1s. At this time, the cab is prone to shaking and the transmission system has abnormal impact noise. Therefore, the engine output torque needs to be controlled to alleviate the shaking of the cab and the abnormal impact noise of the transmission system. Figure 3 It can be seen that after the engine is subjected to slow torque control, the engine output torque reaches 500Nm in 0.6s, and the change of the engine output torque is generally stable.

[0031] Further, such as Figure 4 As shown in the figure, when the vehicle accelerator is released, the engine output torque before the accelerator and deceleration reaches 0 in 0.1s. At this time, if there is no deceleration, the cab is likely to shake, so a deceleration function is added to ensure smoothness. At this time, the engine output torque can be decelerated to ensure that the engine output torque slowly becomes 0, thereby ensuring driving stability.

[0032] The embodiment of the present invention ensures the stability of the vehicle cab by performing slow torque control on the engine output torque when the accelerator is released.

[0033] As a possible implementation of the present invention, in this implementation, the torque-related component further includes a braking component, and when the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the output torque of the engine is turned off, including: When the brake component is activated, the output torque of the engine is shut off based on the braking demand of the brake component.

[0034] In an embodiment of the present invention, the torque-related components also include braking components, and the braking components include components that brake the vehicle, such as brakes, anti-lock braking systems, electronic brake systems, emergency brake assist systems, etc. When the above-mentioned braking components are in an activated state, such as the brakes are stepped on, the anti-lock braking system, the electronic brake system, the emergency brake assist system is started, etc., in order to ensure the safety of vehicle driving, it is necessary to ensure that the output torque of the engine becomes 0 as quickly as possible, so the output torque of the engine cannot be slowly torque controlled.

[0035] Furthermore, when the engine is in manual gear, the torque-related component also includes a clutch. When the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the engine output torque is turned off, including: When the clutch is in the disengaged state, the engine's torque output is shut off.

[0036] In an embodiment of the present invention, when the engine is a manual transmission engine, the torque-related components also include a clutch. In the existing engine slow-torque control technology, when shifting gears in manual gear, the driver generally releases the accelerator and controls the clutch to separate. At this time, the engine continues to output torque, but the engine has no load and the engine speed is prone to overshoot. Therefore, after the clutch is separated, the engine output torque needs to be controlled to 0 as quickly as possible. Therefore, although the brakes are not pressed at this time and the accelerator is in a separated state, the engine output torque cannot be slow-torque controlled, but the engine output torque slow-torque control function is turned off.

[0037] Furthermore, when the engine is in automatic gear, the method includes: The throttle state and the operating state of the torque-related components are sent to the automatic transmission controller, and the engine is controlled based on the control instructions of the automatic transmission controller.

[0038] In the embodiment of the present invention, when the engine is in automatic transmission, since the automatic transmission engine is equipped with an automatic transmission controller, during the starting process, the torque that the engine can output is after slow twisting, but the transmission needs the engine to respond to its needs faster at this time. Therefore, when the transmission controls the engine torque, the engine cannot slow twist, and the torque after slow twisting may not meet the requirements of the transmission. The same problem also occurs when shifting gears. Therefore, as long as the transmission puts forward a torque control requirement, the engine cannot slow twist. Furthermore, for the automatic transmission engine, the control of the engine output torque is completely handed over to the automatic transmission controller.

[0039] As a possible implementation of the present invention, in this implementation, the torque-related component further includes a retarder, and when the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the output torque of the engine is turned off, including: When the retarder is activated, the retarder control of the engine output torque is turned off.

[0040] In an embodiment of the present invention, for a vehicle provided with a retarder, the torque-related component also includes a retarder. The automobile retarder is configured by energizing the excitation coil of the stator assembly through a control circuit to generate a magnetic field. The rotor assembly rotates at high speed along with the transmission part of the vehicle, cutting the magnetic lines of force, generating a reverse torque, and decelerating the vehicle. When the retarder is in an activated state, it indicates that the vehicle needs to decelerate, and the retarder controls the deceleration of the vehicle. At this time, the engine should no longer output torque, so there is no need to perform torque retarding control on the engine output torque. Instead, the engine output torque is directly disconnected, which is similar to the clutch being in a disengaged state.

[0041] Further, the torque-related component also includes a vehicle controller, and the method includes: A control signal from a vehicle controller is obtained. When the control signal requests to control the output torque of the engine, the slow torque control of the engine is turned off, and the engine output is controlled to achieve the required torque corresponding to the control signal.

[0042] In an embodiment of the present invention, there may be other controllers for controlling the engine torque output, such as a vehicle speed controller, a brake controller, etc. When these controllers send an engine torque control signal, in order to ensure driving safety, the engine output torque should be controlled based on the control signal, and the engine output torque slow-torque control function should be turned off.

[0043] The embodiment of the present invention controls the output torque of the vehicle engine by combining the operating status of multiple torque-related components. When torque-reduction control is required, the output torque of the engine is controlled. When torque-reduction control is not required, the torque-reduction control function of the engine output torque is turned off, thereby realizing refined management of the engine torque-reduction control, ensuring the stability of vehicle operation, and saving energy.

[0044] In order to better implement the engine control method in the embodiment of the present invention, based on the engine control method, correspondingly, Figure 5 As shown, the embodiment of the present invention further provides an engine control device, the engine control device 500 includes: The vehicle operation state acquisition module 501 is used to acquire the throttle state of the vehicle and the operation state of the torque-related components, where the torque-related components are components related to the engine output torque; The slow torque control module 502 is used to perform slow torque control on the output torque of the engine based on the throttle state when the operating state of the torque-related component meets the preset engine slow torque control requirement; The non-slow torque control module 503 is used to turn off the slow torque control of the engine output torque when the operating state of the torque-related component does not meet the preset engine slow torque control requirement.

[0045] The engine control device 500 provided in the above embodiment can implement the technical solution described in the above engine control method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above engine control method embodiment, which will not be repeated here.

[0046] The engine control device provided by the present invention obtains the throttle state of the vehicle and the operating state of the torque-related components related to the output torque of the engine, and selects whether to perform slow torque control or non-slow torque control on the output torque of the engine in combination with the throttle state and the operating state of the torque-related components. It not only considers the state of the throttle, but also takes into account the needs of other components of the vehicle for slow torque control of the engine. The engine slow torque control is more refined, ensuring the stability of vehicle driving under various working conditions, improving the driving experience, and at the same time can reduce fuel consumption and save energy.

[0047] like Figure 6 As shown, the present invention also provides a vehicle 600. The vehicle 600 includes a processor 601, a memory 602 and a display 603. Figure 6 Only some of the components of vehicle 600 are shown, but it should be understood that implementation of all of the components shown is not a requirement, and more or fewer components may alternatively be implemented.

[0048] In some embodiments, the processor 601 may be a central processing unit (CPU), a microprocessor or other data processing chip, and is used to run program codes or process data stored in the memory 602, such as the engine control method of the present invention.

[0049] In some embodiments, the processor 601 may be a single server or a server group. The server group may be centralized or distributed. In some embodiments, the processor 601 may be local or remote. In some embodiments, the processor 601 may be implemented in a cloud platform. In some embodiments, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-cloud, etc., or any combination thereof.

[0050] In some embodiments, the memory 602 may be an internal storage unit of the vehicle 600, such as a hard disk or memory of the vehicle 600. In other embodiments, the memory 602 may also be an external storage device of the vehicle 600, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the vehicle 600.

[0051] Furthermore, the memory 602 may include both an internal storage unit of the vehicle 600 and an external storage device. The memory 602 is used to store application software installed in the vehicle 600 and various data.

[0052] In some embodiments, the display 603 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 603 is used to display information of the vehicle 600 and to display a visual user interface. The components 601-603 of the vehicle 600 communicate with each other via a system bus.

[0053] In some embodiments, when the processor 601 executes the engine control program in the memory 602, the following steps may be implemented: Acquire the throttle state of the vehicle and the operating state of the torque-related components, where the torque-related components are components related to the engine output torque; When the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is slow torque controlled based on the throttle state; When the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the engine output torque is turned off.

[0054] It should be understood that: when the processor 601 executes the engine control program in the memory 602, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0055] Correspondingly, an embodiment of the present invention also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions in the engine control method provided by the above-mentioned method embodiments can be implemented.

[0056] Those skilled in the art can understand that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An engine control method, characterized in that: include: Acquiring a throttle state of the vehicle and an operating state of a torque-related component, wherein the torque-related component is a component related to the engine output torque; When the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is slow torque controlled based on the throttle state; When the operating state of the torque-related component does not meet the preset engine slow torque control requirement, the slow torque control of the output torque of the engine is turned off.

2. The engine control method according to claim 1, characterized in that: When the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is subjected to slow torque control, including: When the accelerator is depressed and the operating state of the torque-related component meets a preset engine slow torque control requirement, determining the engine target output torque based on the speed and depth at which the accelerator is depressed; Performing slow torque control on the engine until the output torque of the engine reaches the target output torque of the engine; When the accelerator is released and the operating state of the torque-related component meets the preset engine slow torque control requirement, the output torque of the engine is subjected to slow torque control until the output torque of the engine is zero.

3. The engine control method according to claim 1, characterized in that: The torque-associated component further includes a braking component, and when the running state of the torque-associated component does not meet the preset engine slow torque control requirement, the slow torque control of the output torque of the engine is turned off, including: When the brake component is activated, the output torque of the engine is shut off based on a braking demand of the brake component.

4. The engine control method according to claim 1, characterized in that: When the engine is in manual gear, the torque-related component further includes a clutch, and when the operating state of the torque-related component does not meet the preset engine slow torque control requirement, shutting down the slow torque control of the output torque of the engine includes: When the clutch is in a disengaged state, the torque output of the engine is shut down.

5. The engine control method according to claim 1, characterized in that: When the engine is in automatic gear, the method includes: The throttle state and the operating state of the torque-related component are sent to an automatic transmission controller, and the engine is controlled based on a control instruction of the automatic transmission controller.

6. The engine control method according to claim 1, characterized in that: The torque-related component further includes a retarder, and when the operating state of the torque-related component does not meet the preset engine slow torque control requirement, shutting down the slow torque control of the output torque of the engine includes: When the retarder is in the activated state, the retarder control on the engine output torque is turned off.

7. The engine control method according to claim 1, characterized in that: The torque-correlated component further includes a vehicle controller, and the method includes: A control signal of the vehicle controller is obtained, and when the control signal requests to control the output torque of the engine, the slow torque control of the engine is turned off, and the engine is controlled to output the required torque corresponding to the control signal.

8. An engine control device, characterized in that: include: A vehicle operation state acquisition module, used to acquire the throttle state of the vehicle and the operation state of the torque-related components, wherein the torque-related components are components related to the engine output torque; A slow torque control module, configured to perform slow torque control on the output torque of the engine based on the throttle state when the operating state of the torque-related component meets a preset engine slow torque control requirement; The non-slow torque control module is used to turn off the slow torque control of the output torque of the engine when the operating state of the torque-related component does not meet the preset engine slow torque control requirement.

9. A vehicle, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the engine control method described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps of the engine control method described in any one of claims 1 to 7.

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