A flow dead zone interval verification method and device, a vehicle, and a storage medium

Abstract

The application discloses a kind of flow dead zone interval verification method, device, vehicle and storage medium.The method comprises: obtaining the flow dead zone interval of the shift flow electromagnetic valve in double clutch gearbox;Wherein, the flow dead zone interval is the current interval corresponding to the oil flow of the shift flow electromagnetic valve when 0;According to the flow dead zone interval and the current deviation value preset, determine target current value;After controlling the vehicle gear to target gear, control the current value of the shift flow electromagnetic valve to target current value, and detect the displacement variation of shift fork device;According to the displacement variation, the flow dead zone interval is verified.Through the technical scheme provided in the embodiment of the application, the correctness of the dead zone characteristic data of shift flow electromagnetic valve can be effectively verified, to prevent the outflow of fault shift flow electromagnetic valve.

Description

Technical Field

[0001] The present invention relates to the field of data processing technology, and in particular to a flow dead zone interval verification method, device, vehicle and storage medium. Background Art

[0002] The dual-clutch transmission uses the pressure and flow generated by the shift pressure solenoid valve and shift flow solenoid valve in the hydraulic valve body to apply controllable shift force to the shift fork, thereby achieving vehicle shifting. The shift flow solenoid valve must undergo bench testing after the transmission assembly rolls off the production line to verify that the characteristic data programmed into the valve body and its functionality meet production standards.

[0003] The current-flow characteristic curve of a shift flow solenoid valve shows a one-to-one correspondence between the current used to control the valve body and the oil flow through the valve body. This nonlinear U-shaped curve creates a dead zone when controlling flow switching. This dead zone is the current range where the valve body flow is always zero. Within this current range, the valve body flow remains zero. The two sides of the dead zone correspond to the two shift directions. Control of the dead zone determines the basic shifting function, making the dead zone characteristic of the shift flow solenoid valve in the valve body a critical inspection item. Specific shifting actions are required to verify whether the dead zone characteristic of the shift flow solenoid valve meets the requirements and determine the valve body's usability. Summary of the Invention

[0004] The present invention provides a flow dead zone interval verification method, device, vehicle and storage medium, which can effectively verify the correctness of the dead zone characteristic data of the shift flow solenoid valve and prevent outflow of the faulty shift flow solenoid valve.

[0005] According to one aspect of the present invention, a method for checking a flow dead zone interval is provided, comprising:

[0006] Obtaining a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission; wherein the flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is 0;

[0007] Determining a target current value according to the flow dead zone interval and a preset current deviation value;

[0008] After the vehicle is controlled to shift into a target gear, the current value of the shift flow solenoid valve is controlled to be the target current value, and the displacement change of the shift fork component is detected;

[0009] The flow dead zone interval is verified according to the displacement change.

[0010] According to another aspect of the present invention, a flow dead zone interval verification device is provided, comprising:

[0011] A flow dead zone interval acquisition module is used to obtain a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission; wherein the flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is 0;

[0012] a target current value determination module, configured to determine a target current value according to the flow dead zone interval and a preset current deviation value;

[0013] a displacement change detection module, configured to control the current value of the shift flow solenoid valve to be the target current value after the vehicle is shifted into a target gear, and to detect the displacement change of the shift fork component;

[0014] The flow dead zone interval verification module is used to verify the flow dead zone interval according to the displacement change.

[0015] According to another aspect of the present invention, there is provided a vehicle, comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed 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 traffic dead zone interval verification method described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the flow dead zone interval verification method described in any embodiment of the present invention when executed.

[0020] The flow dead zone interval verification scheme of the embodiment of the present invention obtains the flow dead zone interval of the shift flow solenoid valve in the dual-clutch transmission; wherein, the flow dead zone interval is the current interval corresponding to the oil flow of the shift flow solenoid valve is 0; according to the flow dead zone interval and the pre-set current deviation value, the target current value is determined; after controlling the vehicle to shift into the target gear, the current value of the shift flow solenoid valve is controlled to be the target current value, and the displacement change of the shift fork device is detected; the flow dead zone interval is verified according to the displacement change. Through the technical solution provided by the embodiment of the present invention, the correctness of the dead zone characteristic data of the shift flow solenoid valve can be effectively verified to prevent outflow from a faulty shift flow solenoid valve.

[0021] It is to be understood that the details set forth herein do not limit the scope of the embodiments of the application to the specific embodiments described. Rather, the scope of the embodiments of the application is to be defined by the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0023] Figure 1 is a flow chart of a flow dead zone interval verification method according to an embodiment of the present application;

[0024] Figure 2 is a current-flow characteristic curve diagram provided by an embodiment of the present application;

[0025] Figure 3 is a flow dead zone interval verification diagram of a shift flow electromagnetic valve provided by an embodiment of the present application;

[0026] Figure 4 is a structural diagram of a flow dead zone interval verification device according to an embodiment of the present application;

[0027] Figure 5 is a structural diagram of a vehicle for implementing the flow dead zone interval verification method of the present application. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort should belong to the scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the description 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 numbers 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 clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Example 1

[0031] Figure 1 A flow chart of a flow dead zone interval verification method is provided for the first embodiment of the present invention. This embodiment is applicable to the case of verifying the correctness of the flow dead zone interval of the shift flow solenoid valve in a dual-clutch transmission. The method can be executed by a flow dead zone interval verification device, which can be implemented in the form of hardware and / or software. The flow dead zone interval verification device can be configured in a vehicle. Figure 1 As shown, the method includes:

[0032] S110. Obtain a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission; wherein the flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is 0.

[0033] Among them, the hydraulic valve body in the dual-clutch transmission includes a shift pressure solenoid valve and a shift flow solenoid valve. Before the shift flow solenoid valve is put into formal use, it is necessary to conduct a bench test after the transmission assembly is offline to verify whether the characteristic data of the shift flow solenoid valve meets the offline standards.

[0034] In an embodiment of the present invention, a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission is obtained. The flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is zero. It is understood that within this flow dead zone interval, regardless of the current value, the oil flow of the corresponding shift flow solenoid valve is always zero. For example, the flow dead zone interval of the shift flow solenoid valve can be directly obtained by user input, or the flow dead zone interval can be read from the current-flow characteristic curve of the shift flow solenoid valve.

[0035] Optionally, the flow dead zone interval of the shift flow electromagnetic valve is obtained by: obtaining a current-flow characteristic curve of the shift flow electromagnetic valve; and determining the flow dead zone interval of the shift flow electromagnetic valve based on the current-flow characteristic curve. Exemplarily, the entire valve system is powered on, and the TCU software and the current-flow characteristic data of the shift flow electromagnetic valve in the valve system are written by a diagnostic host computer. Figure 2 A current-flow characteristic curve diagram is provided for an embodiment of the present application. The current-flow characteristic curve is analyzed, and the lower limit flow value CurrentLow and the upper limit flow value CurrentHigh corresponding to the oil flow of 0 are determined from the current-flow characteristic curve. The interval formed by the lower limit flow value CurrentLow and the upper limit flow value CurrentHigh is taken as the flow dead zone interval. It can be understood that the lower limit flow value CurrentLow is the left boundary value of the flow dead zone interval, and the upper limit flow value CurrentHigh is the right boundary value of the flow dead zone interval.

[0036] In S120, a target current value is determined according to the flow dead zone interval and a pre-set current deviation value.

[0037] Exemplarily, the left end point of the flow dead zone interval can be determined, the current value corresponding to the left end point is taken as the lower limit current value, the sum of the lower limit current value and the pre-set current deviation value is calculated, and the sum is taken as the target current value. Exemplarily, the right end point of the flow dead zone interval can be determined, the current value corresponding to the right end point is taken as the upper limit current value, the difference between the upper limit current value and the pre-set current deviation value is calculated, and the difference is taken as the target current value.

[0038] In S130, after the vehicle gear is controlled to the target gear position, the current value of the shift flow electromagnetic valve is controlled to the target current value, and the displacement change amount of the fork device is detected.

[0039] The target gear position is the gear position at which the shift pressure of the liquid flow electromagnetic valve is the largest. After the vehicle gear is controlled to the target gear position, the input current of the shift flow electromagnetic valve is controlled to the target current value, and after a pre-set time length (such as 10s), the displacement change amount of the fork device is detected by the displacement sensor. The displacement change amount can be understood as the displacement of the fork device after the input current of the shift flow electromagnetic valve changes from 0 to the target current value.

[0040] Optionally, the target current value is determined based on the flow dead zone interval and a preset current deviation value, including: determining the lower limit current value of the flow dead zone interval; determining a first target current value based on the lower limit current value and the preset current deviation value; wherein the first target current value is the sum of the lower limit current value and the current deviation value; after controlling the vehicle to shift into the target gear, controlling the current value of the shift flow solenoid valve to be the target current value, and detecting the displacement change of the fork device, including: when controlling the vehicle to shift into the first target gear, controlling the current value of the shift flow solenoid valve to be the first target current value, and detecting the displacement change of the fork device.

[0041] For example, the vehicle is controlled to shift into 5th gear in an open-loop mode. At this time, the shift pressure of the shift flow solenoid valve is 15 bar, which is the maximum shift pressure. After waiting for 5 seconds, when the vehicle's actual gear position changes to 5th gear, the current value of the shift flow solenoid valve is controlled to be the first target current value. The first target current value is the sum of the lower limit current value CurrentLow of the flow dead zone interval and the current deviation value △, that is, the first target current value = CurrentLow + △. It can be understood that by controlling the current value of the shift flow solenoid valve to the first target current value, the shift pressure corresponding to the first target current value can be given to the shift pressure solenoid valve, thereby controlling the shift flow solenoid valve to perform a shift disengagement operation based on the shift pressure, even if the shift fork device undergoes relative displacement to achieve shift disengagement. Therefore, the displacement change of the shift fork device can be detected within the time t0 when the current value of the shift flow solenoid valve is controlled to the target current value.

[0042] Optionally, the target current value is determined based on the flow dead zone interval and a preset current deviation value, including: determining the upper limit current value of the flow dead zone interval; determining a second target current value based on the upper limit current value and the preset current deviation value; wherein the second target current value is the difference between the upper limit current value and the current deviation value; after controlling the vehicle to shift into the target gear, controlling the current value of the shift flow solenoid valve to be the target current value, and detecting the displacement change of the fork device, including: when controlling the vehicle to shift into the second target gear, controlling the current value of the shift flow solenoid valve to be the second target current value, and detecting the displacement change of the fork device; wherein the shifting direction of the fork device corresponding to the second target gear is opposite to that of the first target gear.

[0043] For example, the vehicle is controlled to shift into first gear in open-loop mode. At this point, the shift pressure of the shift flow solenoid valve is 15 bar, its maximum shift pressure. After a 5-second wait, when the vehicle's actual gear position changes to first gear, the current value of the shift flow solenoid valve is controlled to a second target current value. The second target current value is the difference between the upper limit current value CurrentHigh within the flow deadband interval and the current deviation value Δ, i.e., second target current value = CurrentHigh - Δ. It can be understood that by controlling the current value of the shift flow solenoid valve to the second target current value, the shift pressure corresponding to the second target current value can be set to the shift pressure solenoid valve. This allows the shift flow solenoid valve to be controlled based on the shift pressure to perform a shift disengagement operation, even if the shift fork element undergoes relative displacement to achieve the shift disengagement. Therefore, the shift fork element displacement change can be detected during the time t0 when the current value of the shift flow solenoid valve is controlled to the target current value. It should be noted that the shift fork element corresponding to the second target gear position moves in the opposite direction as the first target gear position. Therefore, when the current value of the shift flow solenoid valve is the first target current value, the detected movement direction of the shift fork device is opposite to that of the shift flow solenoid valve when the current value is the second target current value.

[0044] S140: Verify the flow dead zone interval according to the displacement change.

[0045] In an embodiment of the present invention, the flow dead zone interval is verified based on the displacement change, including: when the displacement change is greater than a preset displacement threshold, determining that the flow dead zone interval is abnormal; when the displacement change is less than or equal to the displacement threshold, determining that the flow dead zone interval is normal. Exemplarily, after controlling the vehicle to shift into the first target gear, the current value of the shift flow solenoid valve is controlled to be the sum of the lower limit current value and the current deviation value. If the detected displacement change of the shift fork device is less than or equal to the preset displacement threshold δ, then the flow dead zone interval of the shift flow solenoid valve is determined to be normal; if the detected displacement change of the shift fork device is greater than δ, then the flow dead zone interval of the shift flow solenoid valve is determined to be abnormal, and the verification is stopped. As another example, after controlling the vehicle to shift into the second target gear, the current value of the shift flow solenoid valve is controlled to be the difference between the upper limit current value and the current deviation value. If the detected displacement change of the shift fork device is less than or equal to the preset displacement threshold δ, it is determined that the flow dead zone interval of the shift flow solenoid valve is normal; if the detected displacement change of the shift fork device is greater than δ, it is determined that the flow dead zone interval of the shift flow solenoid valve is abnormal, and the verification is stopped.

[0046] Figure 3 This is a flow dead zone interval calibration diagram of a shift flow solenoid valve provided by an embodiment of the present invention, combined with Figure 3The flow dead zone interval checking process can be understood as described above, and embodiments of the present application will not be described again.

[0047] The flow dead zone interval checking method of embodiments of the present application acquires a flow dead zone interval of a shift flow electromagnetic valve in a dual clutch transmission; wherein the flow dead zone interval is a current interval corresponding to an oil flow of 0 of the shift flow electromagnetic valve; a target current value is determined according to the flow dead zone interval and a pre-set current deviation value; after the vehicle gear is controlled to be a target gear position, the current value of the shift flow electromagnetic valve is controlled to be the target current value, and a displacement change amount of a shift fork device is detected; and the flow dead zone interval is checked according to the displacement change amount. Through the technical solution provided by embodiments of the present application, the correctness of the dead zone characteristic data of the shift flow electromagnetic valve can be effectively verified, and the outflow of a faulty shift flow electromagnetic valve can be prevented.

[0048] In some embodiments, before the target current value is determined according to the flow dead zone interval and the pre-set current deviation value, the method further includes: determining a lower limit current value and an upper limit current value of the flow dead zone interval; judging whether a difference between the upper limit current value and the lower limit current value is greater than a pre-set current threshold value; and determining the target current value according to the flow dead zone interval and the pre-set current deviation value, including: when the difference between the upper limit current value and the lower limit current value is greater than the pre-set current threshold value, determining the target current value according to the flow dead zone interval and the pre-set current deviation value. Optionally, the method further includes: when the difference between the upper limit current value and the lower limit current value is less than or equal to the pre-set current threshold value, determining that the flow dead zone interval is abnormal. Specifically, the interval length of the flow dead zone interval is calculated according to the lower limit current value and the upper limit current value of the flow dead zone interval, wherein the difference between the upper limit current value and the lower limit current value is taken as the interval length of the flow dead zone interval; when the interval length is less than or equal to the pre-set current threshold value (such as 50 mA), it can be directly determined that the flow dead zone interval is abnormal; and when the interval length is greater than the pre-set current threshold value (such as 50 mA), the target current value is determined according to the flow dead zone interval and the pre-set current deviation value, that is, S120-140 is executed to further verify whether the flow dead zone interval is abnormal.

[0049] Optionally, when it is determined that the flow dead zone interval of the shift flow solenoid valve in the dual-clutch transmission is normal, it means that the shift flow solenoid valve meets the offline standards and can be offline and loaded. When the flow dead zone interval of the shift flow solenoid valve is abnormal, it means that the shift flow solenoid valve has failed the verification and does not meet the offline standards. The current-flow characteristic curve of the shift flow solenoid valve can be further learned. If the current learned characteristic curve is offset from the actual characteristic curve of the shift flow solenoid valve as a whole and the offset error is within the set threshold range, the learned characteristic curve can be used instead of the original characteristic curve. If the offset of a specific point of the characteristic curve or the overall offset exceeds the threshold range, it is determined that the shift flow solenoid valve does not meet the assembly offline conditions and the faulty part needs to be returned to the factory.

[0050] Example 2

[0051] Figure 4 This is a schematic diagram of the structure of a flow dead zone interval calibration device provided by the second embodiment of the present invention. Figure 4 As shown, the device includes:

[0052] The flow dead zone interval acquisition module 410 is used to obtain the flow dead zone interval of the shift flow solenoid valve in the dual clutch transmission; wherein the flow dead zone interval is the current interval corresponding to the oil flow of the shift flow solenoid valve being 0;

[0053] A target current value determination module 420 is configured to determine a target current value based on the flow dead zone interval and a preset current deviation value;

[0054] a displacement change detection module 430 for controlling the current value of the shift flow solenoid valve to be the target current value after the vehicle is shifted into the target gear, and detecting the displacement change of the shift fork component;

[0055] The flow dead zone interval verification module 440 is used to verify the flow dead zone interval according to the displacement change.

[0056] Optionally, the target current value determination module is configured to:

[0057] Determining a lower limit current value of the flow dead zone interval;

[0058] Determine a first target current value according to the lower current limit value and a preset current deviation value; wherein the first target current value is the sum of the lower current limit value and the current deviation value;

[0059] The displacement change detection module is used to:

[0060] When the vehicle is controlled to shift into the first target gear, the current value of the shift flow solenoid valve is controlled to be the first target current value, and the displacement change of the shift fork component is detected.

[0061] Optionally, the target current value determination module is configured to:

[0062] Determining an upper limit current value of the flow dead zone interval;

[0063] Determining a second target current value based on the upper limit current value and a preset current deviation value; wherein the second target current value is the difference between the upper limit current value and the current deviation value;

[0064] The displacement change detection module is used to:

[0065] When controlling the vehicle to shift into a second target gear, the current value of the shift flow solenoid valve is controlled to be the second target current value, and the displacement change of the fork component is detected; wherein the shifting direction of the fork component corresponding to the second target gear is opposite to that of the first target gear.

[0066] Optionally, the traffic dead zone interval verification module is used to:

[0067] When the displacement change is greater than a preset displacement threshold, determining that the flow dead zone interval is abnormal;

[0068] When the displacement change is less than or equal to the displacement threshold, it is determined that the flow dead zone interval is normal.

[0069] Optionally, the traffic dead zone interval acquisition module is used to:

[0070] Obtaining a current-flow characteristic curve of the shift flow solenoid valve;

[0071] The flow dead zone interval of the shifted flow solenoid valve is determined based on the current-flow characteristic curve.

[0072] Optionally, the device further includes:

[0073] Before determining the target current value according to the flow dead zone interval and the preset current deviation value, determining the lower limit current value and the upper limit current value of the flow dead zone interval;

[0074] Determining whether a difference between the upper current limit and the lower current limit is greater than a preset current threshold;

[0075] Determining a target current value according to the flow dead zone interval and a preset current deviation value includes:

[0076] When the difference between the upper current limit and the lower current limit is greater than the preset current threshold, a target current value is determined according to the flow dead zone interval and a preset current deviation value.

[0077] Optionally, the device further includes:

[0078] The flow dead zone interval abnormality determination module is used to determine that the flow dead zone interval is abnormal when the difference between the upper limit current value and the lower limit current value is less than or equal to the preset current threshold.

[0079] The flow dead zone interval verification device provided in the embodiment of the present invention can execute the flow dead zone interval verification method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0080] Example 3

[0081] Figure 5 A schematic diagram of a vehicle 10 is shown that can be used to implement an embodiment of the present invention. The vehicle is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The vehicle can also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, 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 claimed herein.

[0082] like Figure 5 As shown, vehicle 10 includes at least one processor 11 and memory, such as read-only memory (ROM) 12 and random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor, and processor 11 can perform various appropriate actions and processes based on the computer programs stored in ROM 12 or loaded from storage unit 18 into RAM 13. RAM 13 can also store various programs and data required for the operation of vehicle 10. Processor 11, ROM 12, and RAM 13 are interconnected via bus 14. An input / output (I / O) interface 15 is also connected to bus 14.

[0083] Various components in the vehicle 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 magnetic 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 vehicle 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0084] The processor 11 can be any general-purpose and / or specialized processing component 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 specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the traffic dead zone interval verification method.

[0085] In some embodiments, the traffic dead zone interval verification 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 vehicle 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 traffic dead zone interval verification method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the traffic dead zone interval verification method in any other appropriate manner (for example, by means of firmware).

[0086] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes 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.

[0087] 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, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0088] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0089] To provide interaction with a user, the systems and techniques described herein can be implemented in a vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the vehicle. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0090] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0091] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0092] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0093] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A flow dead zone interval verification method, characterized in that: include: Obtaining a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission; wherein the flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is 0; Determining a target current value according to the flow dead zone interval and a preset current deviation value; After the vehicle is controlled to shift into a target gear, the current value of the shift flow solenoid valve is controlled to be the target current value, and the displacement change of the shift fork component is detected; Verifying the flow dead zone interval according to the displacement change; The target current value is determined according to the flow dead zone interval and the preset current deviation value, including: Determining a lower limit current value of the flow dead zone interval; Determine a first target current value according to the lower current limit value and a preset current deviation value; wherein the first target current value is the sum of the lower current limit value and the current deviation value; After the vehicle is controlled to be in a target gear, the current value of the shift flow solenoid valve is controlled to be the target current value, and the displacement change of the shift fork device is detected, including: When the vehicle is controlled to shift into the first target gear, the current value of the shift flow solenoid valve is controlled to be the first target current value, and the displacement change of the shift fork component is detected.

2. The method according to claim 1, characterized in that Determining a target current value according to the flow dead zone interval and a preset current deviation value includes: Determining an upper limit current value of the flow dead zone interval; Determining a second target current value based on the upper limit current value and a preset current deviation value; wherein the second target current value is the difference between the upper limit current value and the current deviation value; After the vehicle is controlled to be in a target gear, the current value of the shift flow solenoid valve is controlled to be the target current value, and the displacement change of the shift fork device is detected, including: When controlling the vehicle to shift into a second target gear, the current value of the shift flow solenoid valve is controlled to be the second target current value, and the displacement change of the fork component is detected; wherein the shifting direction of the fork component corresponding to the second target gear is opposite to that of the first target gear.

3. The method according to claim 1, characterized in that The flow dead zone interval is verified according to the displacement change, including: When the displacement change is greater than a preset displacement threshold, determining that the flow dead zone interval is abnormal; When the displacement change is less than or equal to the displacement threshold, it is determined that the flow dead zone interval is normal.

4. The method according to claim 1, wherein Get the flow dead zone interval of the shift flow solenoid valve, including: Obtaining a current-flow characteristic curve of the shift flow solenoid valve; The flow dead zone interval of the shifted flow solenoid valve is determined based on the current-flow characteristic curve.

5. The method according to claim 1, wherein Before determining the target current value according to the flow dead zone interval and the preset current deviation value, the method further includes: Determining a lower limit current value and an upper limit current value of the flow dead zone interval; Determining whether a difference between the upper current limit and the lower current limit is greater than a preset current threshold; Determining a target current value according to the flow dead zone interval and a preset current deviation value includes: When the difference between the upper current limit and the lower current limit is greater than the preset current threshold, a target current value is determined according to the flow dead zone interval and a preset current deviation value.

6. The method according to claim 5, characterized in that Also includes: When the difference between the upper current limit and the lower current limit is less than or equal to the preset current threshold, it is determined that the flow dead zone is abnormal.

7. A flow dead zone interval calibration device, characterized in that: include: A flow dead zone interval acquisition module is used to obtain a flow dead zone interval of a shift flow solenoid valve in a dual-clutch transmission; wherein the flow dead zone interval is a current interval corresponding to when the oil flow of the shift flow solenoid valve is 0; a target current value determination module, configured to determine a target current value according to the flow dead zone interval and a preset current deviation value; a displacement change detection module, configured to control the current value of the shift flow solenoid valve to be the target current value after the vehicle is shifted into the target gear, and detect the displacement change of the shift fork component; A flow dead zone interval verification module, configured to verify the flow dead zone interval according to the displacement change; Wherein, the target current value determination module is used to: Determining a lower limit current value of the flow dead zone interval; Determine a first target current value according to the lower current limit value and a preset current deviation value; wherein the first target current value is the sum of the lower current limit value and the current deviation value; The displacement change detection module is used to: When the vehicle is controlled to shift into the first target gear, the current value of the shift flow solenoid valve is controlled to be the first target current value, and the displacement change of the shift fork component is detected.

8. A vehicle, characterized in that: The vehicle comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed 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 flow dead zone interval verification method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the flow dead zone interval verification method according to any one of claims 1 to 6 when executed.

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