Engine rotating speed control method, device and equipment and vehicle

Abstract

The invention discloses a rotating speed control method, device and equipment of an engine and a vehicle, which are suitable for the vehicle comprising a mechanical automatic transmission gearbox, and the method comprises the following steps: acquiring gear shifting request information sent by a gearbox controller; wherein the gear shifting request information comprises a current gear and a target gear of the gearbox; according to the gear shifting request information and preset gear shifting information of the gearbox, rotating speed correction parameters needed by the engine in the gear shifting and speed regulating stage are determined; wherein the preset gear shifting information comprises action requirements, corresponding to various gear shifting request information, of the gearbox; and controlling the rotating speed of the engine based on the rotating speed correction parameter in the gear shifting speed regulation stage. According to the embodiment of the invention, the rotating speed correction parameter required by the engine at the gear shifting speed regulation stage is determined according to the action requirement of the gearbox corresponding to the gear shifting request information, the working condition at the gear shifting speed regulation stage can be accurately identified, and various rotating speed regulation requirements of a gearbox controller are met.

Description

Technical Field

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

[0002] An automated mechanical transmission (AMT) is a device that adds an electronically controlled actuator to replace manual operation on the basis of a manual transmission to achieve automatic shifting. During the matching process with the engine, the AMT transmission controls and limits the engine torque and speed to achieve upshift and downshift operations and complete the automatic shifting process.

[0003] However, the shifting time of different gears in the AMT gearbox is different. When a certain gearbox is activated alone, the gear shift synchronization time is short. When the front gearbox, rear gearbox and main gearbox are activated at the same time, the gear shift synchronization time is long. Therefore, the synchronization time control of the automatic transmission control unit (TCU) during the gear shift process is also different. At present, the electronic control unit (ECU) cannot identify this working condition and cannot respond well to the speed response requirements of the TCU under various gear shift requests. Summary of the invention

[0004] The present invention provides an engine speed control method, device, equipment and vehicle, which can accurately identify the working conditions in the gear shifting and speed regulation stage and meet various speed control requirements of a gearbox controller.

[0005] In a first aspect, an embodiment of the present invention provides a method for controlling the speed of an engine, which is applicable to a vehicle including a mechanical automatic transmission gearbox, comprising:

[0006] Acquire the gear shift request information sent by the gearbox controller; wherein the gear shift request information includes the current gear position and the target gear position of the gearbox;

[0007] Determining the speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information and the preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information;

[0008] The speed of the engine is controlled based on the speed correction parameter during the gear shifting and speed regulation stage.

[0009] Optionally, determining the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the gear shifting request information and the preset gear shifting information of the gearbox includes:

[0010] determining an action requirement of the gearbox according to the gear shift request information and preset gear shift information of the gearbox;

[0011] According to the action requirements of the gearbox, a speed correction parameter required by the engine in the gear shifting and speed regulation stage is determined.

[0012] Optionally, determining the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the action requirement of the gearbox includes:

[0013] When the front box, the main box or the rear box of the gearbox operates independently, determining the speed correction parameter to be a first preset speed correction parameter;

[0014] When any two of the front box, the main box and the rear box of the gearbox are in operation, the speed correction parameter is determined to be a second preset speed correction parameter;

[0015] When the front box, the main box and the rear box of the gearbox are all in motion, determining the speed correction parameter to be a third preset speed correction parameter;

[0016] The first preset speed correction parameter is greater than the second preset speed correction parameter, and the second preset speed correction parameter is greater than the third preset speed correction parameter.

[0017] Optionally, before obtaining the gear shift request information sent by the gearbox controller, the method further includes:

[0018] Self-learning the synchronization time of various gear shifting processes of the gearbox during the gear shifting and speed regulation stage;

[0019] Determine the speed correction parameter corresponding to the gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time;

[0020] After obtaining the gear shift request information sent by the transmission controller, it also includes:

[0021] The speed of the engine is controlled based on the speed correction parameter during the gear shifting and speed regulation stage.

[0022] Optionally, the speed correction parameters corresponding to the gear shifting and speed regulation stages of various gear shifting processes determined according to the synchronization time include:

[0023] When the synchronization time is within a first time range, determining the rotation speed correction parameter to be a first preset rotation speed correction parameter;

[0024] When the synchronization time is within a second time range, determining the rotation speed correction parameter to be a second preset rotation speed correction parameter;

[0025] When the synchronization time is within a third time range, determining the rotation speed correction parameter to be a third preset rotation speed correction parameter;

[0026] Among them, the first time range is smaller than the second time range, and the second time range is smaller than the third time range; the first preset speed correction parameter is larger than the second preset speed correction parameter, and the second preset speed correction parameter is larger than the third preset speed correction parameter.

[0027] Optionally, after obtaining the gear shift request information sent by the gearbox controller, the method further includes:

[0028] Get the current accelerator pedal opening information;

[0029] The opening of the throttle valve of the gas engine is determined according to the gear shift request information and the accelerator pedal opening information.

[0030] In a second aspect, an embodiment of the present invention further provides a speed control device for an engine, comprising:

[0031] A gear shift request information acquisition module, used to acquire the gear shift request information sent by the gearbox controller; wherein the gear shift request information includes the current gear position and the target gear position of the gearbox;

[0032] a speed correction parameter determination module, configured to determine the speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information acquired by the gear shifting request information acquisition module and the preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information;

[0033] A speed control module is used to control the speed of the engine based on the speed correction parameter determined by the speed correction parameter determination module during the gear shifting and speed regulation stage.

[0034] Optionally, the device further comprises:

[0035] A synchronization time self-learning module, used for self-learning the synchronization time of various gear shifting processes of the gearbox in the gear shifting and speed regulation stage;

[0036] The speed correction parameter determination module is also used to determine the speed correction parameter corresponding to the gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time self-learned by the synchronization time self-learning module;

[0037] The speed control module is further configured to control the speed of the engine based on the speed correction parameter during the gear shifting and speed regulation phase after the gear shifting request information acquiring module acquires the gear shifting request information sent by the transmission controller.

[0038] In the third aspect, an embodiment of the present invention further provides an engine speed control device, characterized in that the engine speed control device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the engine speed control method as described in any embodiment of the first aspect.

[0039] In a fourth aspect, an embodiment of the present invention further provides a vehicle, comprising the engine speed control device as described in the third aspect.

[0040] The embodiment of the present invention discloses a method, device, equipment and vehicle for controlling the speed of an engine, which is applicable to a vehicle including a mechanical automatic transmission gearbox, and the method includes: obtaining a shift request information sent by a gearbox controller; wherein the shift request information includes the current gear position and the target gear position of the gearbox; determining the speed correction parameter required by the engine in the gear shift and speed regulation stage according to the shift request information and the preset shift information of the gearbox; wherein the preset shift information includes the action requirements of the gearbox corresponding to various shift request information; and controlling the speed of the engine based on the speed correction parameter in the gear shift and speed regulation stage. The embodiment of the present invention determines the speed correction parameter required by the engine in the gear shift and speed regulation stage according to the action requirements of the gearbox corresponding to the shift request information, can accurately identify the working conditions in the gear shift and speed regulation stage, and meets various speed control requirements of the gearbox controller.

[0041] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A flow chart of a method for controlling the speed of an engine provided by an embodiment of the present invention;

[0044] Figure 2 A flow chart of another engine speed control method provided by an embodiment of the present invention;

[0045] Figure 3 A flow chart of another engine speed control method provided by an embodiment of the present invention;

[0046] Figure 4 A flow chart of another engine speed control method provided by an embodiment of the present invention;

[0047] Figure 5 A schematic structural diagram of a speed control device for an engine provided by an embodiment of the present invention;

[0048] Figure 6 A schematic structural diagram of another engine speed control device provided by an embodiment of the present invention;

[0049] Figure 7 A schematic structural diagram of an engine speed control device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0052] Figure 1 This is a flow chart of an engine speed control method provided by an embodiment of the present invention. This embodiment is applicable to the case of regulating the engine speed during the gear shifting and speed regulation stage, and is applicable to vehicles including a mechanical automatic transmission gearbox. The method can be executed by an engine speed control device, which can be implemented in the form of hardware and / or software, and can be configured in the engine speed control device. Figure 1 , the method comprises the following steps:

[0053] S110, acquiring gear shift request information sent by a gearbox controller; wherein the gear shift request information includes a current gear position and a target gear position of the gearbox.

[0054] Specifically, the ECU and TCU can exchange information. By obtaining information such as the current gear position and target gear position sent by the TCU, the ECU can identify the preset gear shift information inside the ECU and correct the engine control parameters for different gear shift states.

[0055] S120. Determine a speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information and preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information.

[0056] Specifically, the preset gear shift information of the gearbox is set by the user according to the actual situation, and the action requirements of the gearbox corresponding to various gear shift request information can be single gear action, two gear action or three gear action. The speed correction parameter can include a PI correction parameter or a PID correction parameter.

[0057] It is understandable that, because the action requirements of the gearbox are different, the synchronization time of various gear shifting processes of the gearbox in the gear shifting and speed regulation stage is not necessarily the same. During the synchronization time, the ECU needs to regulate the engine speed to the target speed. However, since the current technology does not distinguish the synchronization time required for different gear shifting processes, the engine speed can only be regulated according to the fixed speed correction parameter, and the speed response requirements of the TCU under each gear shift request cannot be well responded. For example, if the gearbox requires three-box action, the synchronization time is long, and the control according to the original fixed speed control parameter will cause the engine speed to overshoot. If the gearbox requires a single-box action, the synchronization time is short, and the engine speed cannot reach the target speed according to the original fixed speed control parameter. The embodiment of the present invention determines the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the action requirements of the gearbox corresponding to various gear shift request information, which can well respond to the speed response requirements of the TCU under each gear shift request.

[0058] S130: Control the engine speed based on the speed correction parameter during the gear shifting and speed regulation phase.

[0059] Specifically, after determining the speed correction parameters required by the engine during the gear shifting and speed regulation phase according to the action requirements of the gearbox corresponding to various gear shift request information, the engine speed is controlled based on the speed correction parameters during the gear shifting and speed regulation phase, so that the speed of the engine after speed regulation can be closer to the target speed.

[0060] The embodiment of the present invention determines the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the action requirements of the gearbox corresponding to the gear shift request information, can accurately identify the working conditions in the gear shifting and speed regulation stage, and meets various speed control requirements of the gearbox controller.

[0061] Figure 2 A flowchart of another engine speed control method provided by an embodiment of the present invention, referring to Figure 2 , the method comprises the following steps:

[0062] S210, obtaining gear shift request information sent by a transmission controller; wherein the gear shift request information includes a current gear position and a target gear position of the transmission.

[0063] S221. Determine an action requirement of the transmission according to the gear shift request information and preset gear shift information of the transmission.

[0064] Specifically, Table 1 is a preset shift information table of a transmission provided in an embodiment of the present invention.

[0065] Table 1

[0066] Current gear Target gear Front box (whether it is in motion) Main box (whether it is in action) Back box (whether it is in motion) 1 2 yes no no 1 3 yes yes no … … … … … 2 3 yes yes no 2 4 yes no no … … … … … 15 16 yes no no 15 14 yes yes yes 15 13 no yes yes 16 15 no yes yes 16 14 yes yes yes

[0067] Referring to Table 1, according to the current gear position and target gear position of the gearbox and the preset gear shift information of the gearbox, the action requirements of the front box, main box and rear box of the AMT gearbox can be obtained.

[0068] S222: Determine the speed correction parameter required by the engine during the gear shifting and speed regulation phase according to the action requirements of the gearbox.

[0069] It can be understood that the action requirements of the gearbox include single-box action, two-box action and three-box action. According to the different action requirements of the gearbox, the speed correction parameters required by the engine in the corresponding gear shifting and speed regulation stage can be determined.

[0070] Understandably, Figure 1 Step S120 in the embodiment may include step S221 and step S222.

[0071] S230: Control the engine speed based on the speed correction parameter during the gear shifting and speed regulation phase.

[0072] Optionally, based on the above embodiment, step S222 includes: when the front box, the main box or the rear box of the gearbox is operating alone, determining the speed correction parameter to be a first preset speed correction parameter; when any two of the front box, the main box and the rear box of the gearbox are operating, determining the speed correction parameter to be a second preset speed correction parameter; when the front box, the main box and the rear box of the gearbox are all operating, determining the speed correction parameter to be a third preset speed correction parameter; the first preset speed correction parameter is greater than the second preset speed correction parameter, and the second preset speed correction parameter is greater than the third preset speed correction parameter.

[0073] The first preset speed correction parameter, the second preset speed correction parameter and the third preset speed correction parameter may be calibrated in advance by the user.

[0074] In the embodiment of the present invention, the ECU obtains the gear shift request information sent by the transmission controller, and can determine the action requirements of the transmission according to the gear shift request information and the preset gear shift information of the transmission, thereby applying different corrections in different gear shift and speed regulation stages, which can adapt to different gear shift and speed regulation response requirements of the transmission controller.

[0075] Figure 3 A flowchart of another engine speed control method provided by an embodiment of the present invention, referring to Figure 3 , the method comprises the following steps:

[0076] S310, self-learning the synchronization time of various gear shifting processes of the gearbox during the gear shifting and speed regulation stage.

[0077] S320. Determine a speed correction parameter corresponding to a gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time.

[0078] It should be noted that the various gear shifting processes of the gearbox will result in different synchronization times due to the different actions of the front box, rear box and main box of the gearbox. By self-learning the synchronization times of the various gear shifting processes of the gearbox in the gear shifting and speed regulation stage, the synchronization time of the gearbox in the corresponding gear shifting and speed regulation stage can be directly obtained according to the gear shift request information sent by the gearbox controller, so that the speed correction parameters corresponding to the gear shifting and speed regulation stage of various gear shifting processes can be determined according to the synchronization time.

[0079] S330, obtaining gear shift request information sent by a gearbox controller; wherein the gear shift request information includes a current gear position and a target gear position of the gearbox.

[0080] S340: Control the engine speed based on the speed correction parameter during the gear shifting and speed regulation phase.

[0081] Optionally, based on the above embodiment, step S320 includes: when the synchronization time is within a first time range, determining the speed correction parameter to be a first preset speed correction parameter; when the synchronization time is within a second time range, determining the speed correction parameter to be a second preset speed correction parameter; when the synchronization time is within a third time range, determining the speed correction parameter to be a third preset speed correction parameter; wherein the first time range is smaller than the second time range, and the second time range is smaller than the third time range; the first preset speed correction parameter is greater than the second preset speed correction parameter, and the second preset speed correction parameter is greater than the third preset speed correction parameter.

[0082] The first preset speed correction parameter, the second preset speed correction parameter and the third preset speed correction parameter can be calibrated in advance by the user. The first time range, the second time range and the third time range can be set by the user according to the operation of the front box, the main box and the rear box of the AMT gearbox.

[0083] Specifically, the first time range can be determined according to the time for a single-box action of the AMT gearbox, the second time range can be determined according to the time for a two-box action of the AMT gearbox, and the third time range can be determined according to the time for a three-box action of the AMT gearbox.

[0084] It is understandable that Figure 2 The difference between the corresponding embodiments is that, in this embodiment, the ECU can self-learn the synchronization time of various gear shifting processes of the gearbox in the gear shifting and speed regulation stage, so as to directly determine the speed correction parameter corresponding to the gear shifting and speed regulation stage according to the gear shifting request information sent by the gearbox controller. Thus, different corrections are applied in different gear shifting and speed regulation stages, which can adapt to different gear shifting and speed regulation response requirements of the gearbox controller.

[0085] Figure 4 A flowchart of another engine speed control method provided by an embodiment of the present invention, referring to Figure 4 , the method comprises the following steps:

[0086] S410, obtaining gear shift request information sent by a gearbox controller; wherein the gear shift request information includes a current gear position and a target gear position of the gearbox.

[0087] S420, determining a speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information and the preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information.

[0088] S430: Control the engine speed based on the speed correction parameter during the gear shifting and speed regulation phase.

[0089] After step S410, the method further includes:

[0090] S421. Obtain current accelerator pedal opening information.

[0091] S431: Determine the opening of the throttle valve of the gas engine according to the gear shift request information and the accelerator pedal opening information.

[0092] It should be noted that, in the embodiment of the present invention, the ECU can simultaneously monitor the unpowered downshift process. If the ECU monitors the unpowered downshift process (the opening of the accelerator pedal is 0), the opening of the throttle valve of the gas engine can be adjusted to achieve the minimum charge correction based on the gear position, thereby preventing the occurrence of engine speed pits during unpowered downshifting.

[0093] In summary, the embodiment of the present invention determines the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the action requirements of the gearbox corresponding to the gear shift request information, and can accurately identify the working conditions in the gear shifting and speed regulation stage. The ECU obtains the gear shift request information sent by the gearbox controller, and can determine the action requirements of the gearbox according to the gear shift request information and the preset gear shift information of the gearbox, so as to apply different corrections in different gear shifting and speed regulation stages. By self-learning the synchronization time of various gear shifting processes of the gearbox in the gear shifting and speed regulation stage, the synchronization time of the gearbox in the corresponding gear shifting and speed regulation stage can be directly obtained according to the gear shift request information sent by the gearbox controller, and the speed correction parameter corresponding to the gear shifting and speed regulation stage of various gear shifting processes can be determined according to the synchronization time, so as to apply different corrections in different gear shifting and speed regulation stages. The ECU can simultaneously monitor the unpowered downshift process. If the ECU monitors the unpowered downshift process (the opening of the accelerator pedal is 0), by adjusting the opening of the throttle valve of the gas engine, the correction of the minimum charge can be achieved based on the gear position to prevent the occurrence of engine speed pits during unpowered downshifting. The solution of the embodiment of the present invention is used to optimize and improve the existing technology, accurately identify the working conditions, and take many aspects into consideration. It is definite and feasible, has significant effects, and can meet various speed control requirements of TCU.

[0094] Figure 5 A schematic diagram of the structure of an engine speed control device provided by an embodiment of the present invention, referring to Figure 5 The device includes: a gear shift request information acquisition module 510, a speed correction parameter determination module 520 and a speed control module 530.

[0095] In an embodiment of the present invention, the gear shift request information acquisition module 510 is used to acquire the gear shift request information sent by the gearbox controller; wherein the gear shift request information includes the current gear position and the target gear position of the gearbox; the speed correction parameter determination module 520 is used to determine the speed correction parameter required by the engine in the gear shift and speed regulation stage according to the gear shift request information acquired by the gear shift request information acquisition module 510 and the preset gear shift information of the gearbox; wherein the preset gear shift information includes the action requirements of the gearbox corresponding to various gear shift request information; the speed control module 530 is used to control the speed of the engine in the gear shift and speed regulation stage based on the speed correction parameter determined by the speed correction parameter determination module.

[0096] Figure 6 A schematic diagram of the structure of another engine speed control device provided by an embodiment of the present invention, optionally, refer to Figure 6 ,exist Figure 5 Based on the embodiment, the device further includes: a synchronization time self-learning module 610 .

[0097] In an embodiment of the present invention, the synchronization time self-learning module 610 is used to self-learn the synchronization time of various gear shifting processes of the gearbox during the gear shifting and speed regulation stage; the speed correction parameter determination module 520 is also used to determine the speed correction parameters corresponding to the gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time self-learned by the synchronization time self-learning module 610; the speed control module 530 is also used to control the engine speed based on the speed correction parameters during the gear shifting and speed regulation stage after the gear shift request information acquisition module 510 acquires the gear shift request information sent by the gearbox controller.

[0098] The engine speed control device provided in the embodiment of the present invention can execute the engine speed control device method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For the contents not described in detail in the embodiment of the present invention, reference can be made to the engine speed control method provided in the above embodiment.

[0099] Figure 7 A schematic diagram of the structure of a speed control device for an engine provided for an embodiment of the present invention. The speed control device for the engine is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The speed control device for the engine may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0100] like Figure 7 As shown, the engine speed control device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the engine speed control device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0101] A number of components in the engine speed control device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the engine speed control device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0102] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a speed control method of an engine.

[0103] In some embodiments, the engine speed control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the engine speed control device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the engine speed control method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the engine speed control method in any other appropriate manner (for example, by means of firmware).

[0104] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0105] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0106] An embodiment of the present invention further provides a vehicle, comprising the engine speed control device provided in the above embodiment.

[0107] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0108] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling the speed of an engine, characterized in that: Suitable for vehicles with automatic mechanical transmission gearboxes, including: Acquire the gear shift request information sent by the gearbox controller; wherein the gear shift request information includes the current gear position and the target gear position of the gearbox; Determining the speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information and the preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information; The speed of the engine is controlled based on the speed correction parameter during the gear shifting and speed regulation stage.

2. The engine speed control method according to claim 1, characterized in that: The step of determining the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the gear shifting request information and the preset gear shifting information of the gearbox includes: determining an action requirement of the gearbox according to the gear shift request information and preset gear shift information of the gearbox; According to the action requirements of the gearbox, a speed correction parameter required by the engine in the gear shifting and speed regulation stage is determined.

3. The engine speed control method according to claim 2, characterized in that: Determining the speed correction parameter required by the engine in the gear shifting and speed regulation stage according to the action requirements of the gearbox includes: When the front box, the main box or the rear box of the gearbox operates independently, determining the speed correction parameter to be a first preset speed correction parameter; When any two of the front box, the main box and the rear box of the gearbox are in operation, the speed correction parameter is determined to be a second preset speed correction parameter; When the front box, the main box and the rear box of the gearbox are all in motion, determining the speed correction parameter to be a third preset speed correction parameter; The first preset speed correction parameter is greater than the second preset speed correction parameter, and the second preset speed correction parameter is greater than the third preset speed correction parameter.

4. The engine speed control method according to claim 1, characterized in that: Before obtaining the gear shift request information sent by the transmission controller, it also includes: Self-learning the synchronization time of various gear shifting processes of the gearbox during the gear shifting and speed regulation stage; Determine the speed correction parameter corresponding to the gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time; After obtaining the gear shift request information sent by the transmission controller, it also includes: The speed of the engine is controlled based on the speed correction parameter during the gear shifting and speed regulation stage.

5. The engine speed control method according to claim 4, characterized in that: The speed correction parameters corresponding to the gear shifting and speed regulation stages of various gear shifting processes determined according to the synchronization time include: When the synchronization time is within a first time range, determining the rotation speed correction parameter to be a first preset rotation speed correction parameter; When the synchronization time is within a second time range, determining the rotation speed correction parameter to be a second preset rotation speed correction parameter; When the synchronization time is within a third time range, determining the rotation speed correction parameter to be a third preset rotation speed correction parameter; Among them, the first time range is smaller than the second time range, and the second time range is smaller than the third time range; the first preset speed correction parameter is larger than the second preset speed correction parameter, and the second preset speed correction parameter is larger than the third preset speed correction parameter.

6. The engine speed control method according to claim 1, characterized in that: After obtaining the gear shift request information sent by the transmission controller, it also includes: Get the current accelerator pedal opening information; The opening of the throttle valve of the gas engine is determined according to the gear shift request information and the accelerator pedal opening information.

7. An engine speed control device, characterized in that: include: A gear shift request information acquisition module, used to acquire the gear shift request information sent by the gearbox controller; wherein the gear shift request information includes the current gear position and the target gear position of the gearbox; a speed correction parameter determination module, configured to determine the speed correction parameter required by the engine in the gear shifting and speed regulation phase according to the gear shifting request information acquired by the gear shifting request information acquisition module and the preset gear shifting information of the gearbox; wherein the preset gear shifting information includes the action requirements of the gearbox corresponding to various gear shifting request information; A speed control module is used to control the speed of the engine based on the speed correction parameter determined by the speed correction parameter determination module during the gear shifting and speed regulation stage.

8. The engine speed control device according to claim 7, characterized in that: Also includes: A synchronization time self-learning module, used for self-learning the synchronization time of various gear shifting processes of the gearbox in the gear shifting and speed regulation stage; The speed correction parameter determination module is also used to determine the speed correction parameter corresponding to the gear shifting and speed regulation stage of various gear shifting processes according to the synchronization time self-learned by the synchronization time self-learning module; The speed control module is further configured to control the speed of the engine based on the speed correction parameter during the gear shifting and speed regulation phase after the gear shifting request information acquiring module acquires the gear shifting request information sent by the transmission controller.

9. An engine speed control device, characterized in that: The engine speed control device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the engine speed control method described in any one of claims 1-7.

10. A vehicle, characterized in that: A speed control device for an engine comprising the engine speed control device as claimed in claim 9.

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