A fault diagnosis method and device based on a dual-clutch transmission

Abstract

The application discloses a fault diagnosis method and device based on a double-clutch transmission, and relates to the technical field of automobiles. The method comprises the following steps: acquiring an on-axis gear position and an engaged gear position of a working clutch; if it is determined that the on-axis gear position and the engaged gear position are both non-empty gear positions and the on-axis gear position is different from the engaged gear position, it is determined that the working clutch has an unexpected gear position engagement fault; locking a command gear position of the working clutch, and issuing an unexpected gear position engagement fault prompt. The technical scheme of the embodiment of the application not only realizes accurate detection of the unexpected gear position engagement fault, but also avoids the vehicle performing a gear shifting operation under the unexpected gear position engagement fault, prevents the vehicle from having a mechanical jam fault due to gear shifting, and ensures the driving safety of the vehicle and the mechanical safety of the transmission.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a fault diagnosis method and apparatus based on a dual-clutch transmission. Background Technology

[0002] Dual-clutch transmissions (DCTs) are widely used in the automotive industry because they combine the flexibility of manual transmissions with the comfort of automatic transmissions and provide uninterrupted power output.

[0003] During normal vehicle operation, dual-clutch transmissions may experience unexpected gear engagement. In traditional technical solutions, gear engagement faults of the clutch are usually detected by checking the position of the shift fork to determine if there is a gear conflict. For example, the current position of the shift fork and the neutral limit position can be used to determine if there is a gear conflict.

[0004] However, the above detection methods are relatively simple and have a small detection coverage. They can only detect gear failures caused by damage to the physical structure of the shift fork, and cannot effectively detect failures caused by unexpected gear engagement. In addition, the above detection methods based on the position of the shift fork have large errors and often result in false detection of gear failures. Summary of the Invention

[0005] This invention provides a fault diagnosis method, device, electronic equipment, and storage medium based on a dual-clutch transmission to solve the problem of detecting unexpected gear engagement faults in a dual-clutch transmission.

[0006] According to one aspect of the present invention, a fault diagnosis method based on a dual-clutch transmission is provided, comprising:

[0007] To obtain the shaft gear position and engagement position of the working clutch;

[0008] If it is determined that both the gear position on the shaft and the engaged gear position are not in neutral, and the gear position on the shaft is different from the engaged gear position, then it is determined that the working clutch has an unexpected gear engagement fault.

[0009] Lock the command gear of the working clutch and issue a fault warning for unexpected gear engagement.

[0010] The issuance of the unexpected gear engagement fault warning further includes: if the command gear is the same as the engaged gear, then it is determined that there is an unexpected gear engagement fault on the shaft; based on the working clutch and the shaft gear, an unexpected gear engagement fault warning is issued. Thus, by comparing the gears among the command gear, engaged gear, and shaft gear, it is determined that the unexpected gear engagement occurs on the clutch shaft, and the specific shaft-mounted faulty gear is obtained. Therefore, the unexpected gear engagement fault warning issued based on the working clutch and shaft gear identifies the specific functional component with the aforementioned fault, improving the accuracy of fault diagnosis and providing a decision-making basis for the vehicle powertrain system.

[0011] The issuance of the unexpected gear engagement fault warning further includes: if the command gear is the same as the gear on the shaft, then it is determined that there is an unexpected gear engagement fault in the engaged gear; based on the working clutch and the engaged gear, an unexpected gear engagement fault warning is issued. Thus, by comparing the gears among the command gear, the engaged gear, and the gear on the shaft, it is determined that the unexpected gear engagement occurs on the meshing gear, and the specific gear with the engagement fault is obtained. Therefore, the unexpected gear engagement fault warning issued based on the working clutch and the engaged gear indicates the specific functional component name where the above fault exists, improving the accuracy of fault diagnosis and providing a decision-making basis for the vehicle powertrain system.

[0012] The issuance of the unexpected gear engagement fault warning further includes: if the command gear is different from the gear on the shaft, and the command gear is different from the engaged gear, then it is determined that there is an unexpected gear engagement fault on the gear on the shaft; based on the working clutch, the gear on the shaft, and the engaged gear, an unexpected gear engagement fault warning is issued. Thus, by comparing the gears among the command gear, the engaged gear, and the gear on the shaft, it is determined that the unexpected gear engagement occurs on the clutch shaft, and the unexpected gear engagement fault on the clutch shaft further affects the gear selection of the engaged gear. Therefore, the unexpected gear engagement fault warning issued based on the working clutch and the engaged gear indicates the specific functional component name where the above-mentioned fault exists, improving the accuracy of fault diagnosis and providing a decision-making basis for the vehicle powertrain system.

[0013] After issuing the unexpected gear engagement fault warning, the process also includes: disengaging the pre-engaged gear of the idle clutch to neutral; and disengaging the engaged gear and the on-shaft gear of the working clutch to neutral. First, the pre-engaged gear of the idle clutch is disengaged to neutral, and then the engaged gear and the on-shaft gear of the working clutch are disengaged to neutral, ensuring that both the working clutch and the idle clutch are in neutral, further guaranteeing vehicle driving safety.

[0014] After disengaging the working clutch and the shaft gear, the process further includes: determining whether the working clutch was successfully disengaged into neutral; if it is determined that the working clutch was not successfully disengaged into neutral, locking the working clutch and issuing a stop and maintenance prompt based on the working clutch position. This avoids calling the current working shift fork and prevents mechanical jamming when calling the working clutch.

[0015] After issuing an unexpected gear engagement fault warning, the process further includes: recording fault-related components based on the unexpected gear engagement fault warning and saving the fault-related components to a persistent storage module; and displaying the fault-related components through the persistent storage module in response to receiving a fault read command. This achieves the recording and reading of unexpected gear engagement faults, providing a data foundation for repairing these faults.

[0016] According to another aspect of the present invention, a fault diagnosis device based on a dual-clutch transmission is provided, comprising:

[0017] The gear acquisition execution module is used to acquire the shaft gear and the engaged gear of the working clutch; the fault detection execution module is used to determine that the working clutch has an unexpected gear engagement fault if it is determined that both the shaft gear and the engaged gear are not in neutral, and the shaft gear is different from the engaged gear; the fault prompt issuing module is used to lock the command gear of the working clutch and issue an unexpected gear engagement fault prompt.

[0018] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0019] At least one processor; and

[0020] A memory communicatively connected to the at least one processor; wherein,

[0021] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the fault diagnosis method based on a dual-clutch transmission as described in any embodiment of the present invention.

[0022] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the fault diagnosis method based on a dual-clutch transmission as described in any embodiment of the present invention.

[0023] The technical solution of this invention, after obtaining the shaft gear position and engagement gear position of the working clutch, if it is determined that both the shaft gear position and the engagement gear position are not neutral, and the shaft gear position and the engagement gear position are different, then it is determined that there is an unexpected gear engagement fault in the working clutch. The command gear position of the working clutch is then locked, and an unexpected gear engagement fault warning is issued. This not only achieves accurate detection of unexpected gear engagement faults, but also prevents the vehicle from performing gear shifting operations under unexpected gear engagement faults, preventing mechanical jamming faults caused by gear shifting, and ensuring the driving safety of the vehicle and the mechanical safety of the transmission.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a flowchart of a fault diagnosis method based on a dual-clutch transmission according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a flowchart of another fault diagnosis method based on a dual-clutch transmission provided according to Embodiment 2 of the present invention;

[0028] Figure 3 This is a flowchart of another fault diagnosis method based on a dual-clutch transmission provided in Embodiment 3 of the present invention;

[0029] Figure 4 This is a schematic diagram of another fault diagnosis device based on a dual-clutch transmission according to Embodiment 4 of the present invention.

[0030] Figure 5 This is a schematic diagram of the structure of an electronic device that implements the fault diagnosis method based on a dual-clutch transmission according to an embodiment of the present invention. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Example 1

[0034] Figure 1 This is a flowchart of a fault diagnosis method based on a dual-clutch transmission provided in Embodiment 1 of the present invention. This embodiment is applicable to detecting unexpected gear engagement faults based on the shaft gear position and engaged gear position of the working clutch. This method can be executed by a fault diagnosis device based on a dual-clutch transmission. This fault diagnosis device based on a dual-clutch transmission can be implemented in hardware and / or software. This fault diagnosis device is configured in a fault diagnosis system, which is configured in the vehicle's electronic equipment, typically in an in-vehicle terminal device or other electronic equipment. Figure 1 As shown, the method includes:

[0035] S101. Obtain the shaft gear and engagement gear of the currently working clutch.

[0036] A dual-clutch transmission consists of two clutches: an odd-numbered clutch and an even-numbered clutch. The odd-numbered clutch is responsible for engaging odd-numbered gears, such as 1st, 3rd, 5th, and 7th gears; the even-numbered clutch is responsible for engaging even-numbered gears, such as 2nd, 4th, and 6th gears. When the vehicle is in motion, the clutch shaft of one clutch is connected to the engine, which is the working clutch, i.e., the clutch in the power transmission state; the clutch shaft of the other clutch is disconnected from the engine, which is the idle clutch, i.e., the clutch in the non-power transmission state.

[0037] The gear engaged on the working clutch is the currently used gear. The gear above or below the engaged gear on the idle clutch is pre-selected as the expected gear, which is also pre-engaged. The expected gear can be determined by the accelerator pedal depth and the current vehicle speed to determine whether to upshift or downshift. The accelerator pedal depth is obtained by detecting the throttle opening at the accelerator pedal position. The greater the accelerator pedal depth, the greater the throttle opening, and the smaller the accelerator pedal depth, the smaller the throttle opening.

[0038] The gear position on the shaft, also known as the gear position of the clutch shaft, can be obtained based on the speed of the clutch and the speed of the synchronizer. The speed of the clutch and the speed of the synchronizer are positively correlated with the gear position on the shaft; that is, the faster the speed of the clutch and the faster the speed of the synchronizer, the higher the gear position of the clutch. In this embodiment of the invention, the gear position on the shaft can be obtained through the vehicle power system. That is, the vehicle power system completes the relevant calculations for the gear position on the shaft, and the fault detection system obtains the calculated gear position on the shaft through the vehicle power system, thereby completing the acquisition of the gear position on the shaft.

[0039] Dual-clutch transmissions use shift forks inside the clutch to select the gear. By moving the shift fork to the designated gear, the gear selection is completed. Each shift fork is responsible for selecting two gears. If neither gear corresponding to a shift fork is used, the shift fork is in the middle position. If one gear corresponding to a shift fork is used, the shift fork is moved to the designated gear. The fault detection system can detect the specific position of each shift fork using displacement sensors, thereby determining the location of each shift fork and thus identifying the currently used shift fork and the gear it points to, thus completing the acquisition of the gear.

[0040] Specifically, the dual-clutch transmission in this embodiment of the invention can be a 7-speed clutch, a 6-speed clutch, or a clutch with other numbers of gears. Taking a 7-speed clutch as an example, the dual-clutch transmission in this embodiment of the invention can include four shift forks, with two shift forks in each of the odd-numbered and even-numbered clutches. The two shift forks in the odd-numbered clutches are used for selecting 1st, 3rd, 5th, and 7th gears, while the two shift forks in the even-numbered clutches are used for selecting 2nd, 4th, 6th, and reverse gears. In this embodiment of the invention, there are no specific limitations on the number of gears, the number of shift forks, or the shift fork allocation method of the dual-clutch transmission.

[0041] S102. If it is determined that both the gear on the shaft and the engaged gear are not in neutral, and the gear on the shaft is different from the engaged gear, then it is determined that the working clutch has an unexpected gear engagement fault.

[0042] During vehicle start-up and parking, there are situations where the gear on the axle or the engaged gear is in neutral, that is, there are situations where the gear on the axle is in neutral and the engaged gear is not in neutral; situations where the gear on the axle is not in neutral and the engaged gear is not in neutral; and situations where the gear on the axle is in neutral and the engaged gear is also in neutral. All of the above situations may occur during specific vehicle driving phases.

[0043] When both the gear on the axle and the engaged gear are not in neutral, the vehicle is obviously in motion. Under normal driving conditions, the gear position of the clutch shaft of the working clutch and the gear in engagement on the clutch should be the same, that is, the gear on the axle and the engaged gear are equal. If, at this time, the gear position values ​​of the gear on the axle and the engaged gear values ​​are not the same, it can be determined that there is an unexpected gear engagement fault of the current working clutch, that is, the working clutch is not engaged in the expected gear, and there is an abnormal gear engagement.

[0044] S103. Lock the command gear of the working clutch and issue a fault warning for unexpected gear engagement.

[0045] The command gear is the gear required when starting or driving a vehicle. For manual transmission vehicles, it can be obtained based on the shift command issued by the user via the lever; for automatic transmission vehicles, it is calculated by the vehicle's transmission based on driving speed and traffic conditions. As described in the above technical solution, since an unexpected gear engagement fault has been identified in the current working clutch, the command gear of the working clutch is locked to prevent the vehicle from performing shift operations under the fault, thus preventing mechanical jamming during gear shifting and ensuring the driving safety of the vehicle and the mechanical safety of the transmission.

[0046] Meanwhile, given that an unexpected gear engagement fault has been confirmed, an unexpected gear engagement fault warning is generated based on the clutch identifier of the working clutch where the gear fault occurs (i.e., odd-numbered or even-numbered clutch), as well as the on-shaft gears and engaged gears with mismatched gear values. This warning can be sent to the driver via voice, image, or text through a speaker or screen, or it can be sent to the vehicle's powertrain system so that the powertrain system can complete vehicle control based on the fault information and ensure vehicle driving safety.

[0047] Optionally, in this embodiment of the invention, issuing an unexpected gear engagement fault warning further includes: if the command gear is the same as the engaged gear, then determining that there is an unexpected gear engagement fault in the gear on the shaft; and issuing an unexpected gear engagement fault warning based on the working clutch and the gear on the shaft.

[0048] Specifically, under normal driving conditions, after completing a gear shift, the command gear, the gear on the shaft, and the engaged gear should all be in the same position. If the command gear and the engaged gear are the same, but the command gear and the gear on the shaft are different, it indicates that an unexpected gear has been engaged on the clutch shaft. For example, when the vehicle is in 1st gear and is expected to engage 2nd gear, if 3rd gear is unexpectedly engaged during normal driving, the odd-numbered clutch shaft is identified as the faulty shaft. The command gear and the gear on the shaft corresponding to the faulty shaft are both 1st gear. The controlled shaft is the odd-numbered clutch shaft, and the gear on the shaft, 3rd gear, is the unexpected gear engaged.

[0049] By comparing the command gear, engaged gear, and on-shaft gear, the unexpected gear engagement was determined to occur on the clutch shaft, and the specific faulty gear on the shaft was obtained. Based on the working clutch and the on-shaft gear, the unexpected gear engagement fault prompt was issued, and the name of the specific functional component with the above fault was marked, which improved the accuracy of fault diagnosis and provided a decision basis for the vehicle power system.

[0050] Optionally, in this embodiment of the invention, issuing an unexpected gear engagement fault warning further includes: if the command gear is the same as the gear on the shaft, then determining that there is an unexpected gear engagement fault in the engaged gear; and issuing an unexpected gear engagement fault warning based on the working clutch and the engaged gear.

[0051] Specifically, if the command gear is the same as the gear on the shaft, but the command gear is different from the engaged gear, it indicates that an unexpected gear is engaged on the engaged gear. For example, when the vehicle is in 3rd gear engagement, 5th gear is abnormally engaged. At this time, the faulty shaft is the odd-numbered clutch shaft, the controlled shaft is the even-numbered clutch shaft, the corresponding gear on the shaft and the command gear are 3rd gear, and the 5th gear that was engaged earlier is an unexpected gear.

[0052] By comparing the gear positions between the command gear, the engaged gear, and the gear on the shaft, the unexpected gear engagement was determined to occur on the engaged gear, and the specific gear with the engagement fault was obtained. Based on the working clutch and the engaged gear, the unexpected gear engagement fault prompt was issued, and the name of the specific functional component with the above fault was marked, which improved the accuracy of fault diagnosis and provided a decision basis for the vehicle power system.

[0053] Optionally, in this embodiment of the invention, issuing an unexpected gear engagement fault warning further includes: if the command gear is different from the gear on the shaft, and the command gear is different from the engaged gear, then determining that there is an unexpected gear engagement fault in the gear on the shaft; and issuing an unexpected gear engagement fault warning based on the working clutch, the gear on the shaft, and the engaged gear.

[0054] Specifically, if the command gear, the gear on the shaft, and the engaged gear are all different from each other, it indicates that an unexpected gear engagement occurs on the clutch shaft. The gear engagement failure on the engaging gear is caused by the unexpected gear engagement failure on the clutch shaft. Therefore, by comparing the gears among the command gear, the engaged gear, and the gear on the shaft, it is determined that the unexpected gear engagement occurs on the clutch shaft. Furthermore, the unexpected gear engagement failure on the clutch shaft further affects the gear selection of the engaging gear. Thus, based on the working clutch and the engaging gear, the unexpected gear engagement failure prompt indicates the specific functional component name where the above-mentioned failure exists, improving the accuracy of fault diagnosis and providing a decision-making basis for the vehicle powertrain system.

[0055] The technical solution of this invention, after obtaining the shaft gear position and engagement gear position of the working clutch, if it is determined that both the shaft gear position and the engagement gear position are not neutral, and the shaft gear position and the engagement gear position are different, then it is determined that there is an unexpected gear engagement fault in the working clutch. The command gear position of the working clutch is then locked, and an unexpected gear engagement fault warning is issued. This not only achieves accurate detection of unexpected gear engagement faults, but also prevents the vehicle from performing gear shifting operations under unexpected gear engagement faults, preventing mechanical jamming faults caused by gear shifting, and ensuring the driving safety of the vehicle and the mechanical safety of the transmission.

[0056] Example 2

[0057] Figure 2 This is a flowchart of a fault diagnosis method based on a dual-clutch transmission provided in Embodiment 2 of the present invention. Based on Embodiment 1, this embodiment, after issuing a fault warning for unexpected gear engagement, continues to perform the clutch disengagement process. Figure 2 As shown, the method includes:

[0058] S201. Obtain the shaft gear position and engagement gear of the working clutch.

[0059] S202. If it is determined that both the gear on the shaft and the engaged gear are not in neutral, and the gear on the shaft is different from the engaged gear, then it is determined that the working clutch has an unexpected gear engagement fault.

[0060] S203. Lock the command gear of the currently working clutch and issue an unexpected gear engagement fault prompt.

[0061] S204. Disengage the pre-engaged gear of the idle clutch into neutral.

[0062] As described in the above technical solution, if the working clutch is determined to be an odd-numbered clutch, then the idle clutch is obviously an even-numbered clutch. Since the idle clutch has completed the pre-selection of the expected gear and the pre-engagement operation of the expected gear while the working clutch is performing the power transmission of the engine, when it is determined that there is an unexpected gear engagement fault, the expected shift fork corresponding to the expected gear is first adjusted to the middle position to disengage the pre-engaged gear, thereby putting the idle clutch in the neutral state.

[0063] S205. Disengage the working clutch from the engagement gear and the gear on the shaft into neutral.

[0064] After disengaging the idle clutch from its pre-engaged position, adjust the working fork corresponding to the working gear of the working clutch to the middle position to disengage the engaged position and ensure that the working clutch is in neutral. At the same time, disengage the working clutch shaft by disconnecting the clutch shaft from the engine so that the working clutch is in neutral on the shaft.

[0065] Optionally, in this embodiment of the invention, after disengaging the working clutch and the shaft gear, the method further includes: determining whether the working clutch has successfully disengaged to neutral; if it is determined that the working clutch has not successfully disengaged to neutral, locking the working clutch and issuing a stop and maintenance reminder based on the working clutch. Specifically, when a vehicle experiences an unexpected gear engagement failure, it may be due to an abnormality in the shift fork. In this case, the working clutch may not be able to be disengaged to neutral normally. To ensure driving safety, the working clutch is locked, i.e., the current position of the shift fork remains unchanged, thereby avoiding the activation of the current shift fork and preventing mechanical jamming of the working clutch; at the same time, a stop and maintenance reminder is issued to the user to guide the user to perform maintenance in a timely manner after slowing down and stopping.

[0066] The technical solution of this invention locks the command gear of the working clutch and issues a fault warning for unexpected gear engagement. First, the pre-engaged gear of the idle clutch is disengaged into neutral. Then, the engaged gear and the gear on the shaft of the working clutch are disengaged into neutral, so that both the working clutch and the idle clutch are adjusted to neutral, thereby further ensuring vehicle driving safety.

[0067] Example 3

[0068] Figure 3 This is a flowchart of a fault diagnosis method based on a dual-clutch transmission provided in Embodiment 3 of the present invention. Based on Embodiment 1, this embodiment continues to store and retrieve fault-related components after issuing an unexpected gear engagement fault warning. Figure 3As shown, the method includes:

[0069] S301. Obtain the shaft gear position and engagement gear of the working clutch.

[0070] S302. If it is determined that both the gear on the shaft and the engaged gear are not in neutral, and the gear on the shaft is different from the engaged gear, then it is determined that the working clutch has an unexpected gear engagement fault.

[0071] S303. Lock the command gear of the working clutch and issue an unexpected gear engagement fault warning.

[0072] S304. Record the fault association component according to the unexpected gear position and save the fault association component to the persistent storage module.

[0073] As described in the above technical solution, based on the numerical relationship between the command gear, the on-shaft gear, and the engagement gear, the fault-related components are different under different numerical relationships. Therefore, based on the on-shaft gear or engagement gear where the fault occurs, the relevant fault-related components are recorded. At the same time, the persistent storage module can be an electrically erasable programmable read-only memory (EEPROM) to persistently store the fault-related components.

[0074] S305. In response to receiving a fault read command, the fault-related component is displayed through the persistent storage module.

[0075] After the vehicle is powered back on, after-sales personnel can use diagnostic tools to read fault-related components in the persistent storage module to facilitate timely troubleshooting of vehicle faults.

[0076] The technical solution of this invention locks the command gear of the working clutch and issues an unexpected gear engagement fault prompt. Based on the unexpected gear engagement fault prompt, it records the fault-related components and saves the fault-related components to the persistent storage module. At the same time, when a fault read command is obtained, the fault-related components are displayed through the persistent storage module. This realizes the recording and reading of unexpected gear engagement faults and provides a data foundation for the repair of unexpected gear engagement faults.

[0077] Example 4

[0078] Figure 4 This is a structural block diagram of a fault diagnosis device based on a dual-clutch transmission provided in Embodiment 4 of the present invention. The device specifically includes:

[0079] The gear position acquisition execution module 401 is used to acquire the gear position on the shaft and the engaged gear position of the working clutch;

[0080] The fault detection execution module 402 is used to determine that the working clutch has an unexpected gear engagement fault if it is determined that both the gear position on the shaft and the engagement gear position are not in neutral, and the gear position on the shaft is different from the engagement gear position.

[0081] The fault indication module 403 is used to lock the command gear of the working clutch and issue a fault indication for unexpected gear engagement.

[0082] The technical solution of this invention, after obtaining the shaft gear position and engagement gear position of the working clutch, if it is determined that both the shaft gear position and the engagement gear position are not neutral, and the shaft gear position and the engagement gear position are different, then it is determined that there is an unexpected gear engagement fault in the working clutch. The command gear position of the working clutch is then locked, and an unexpected gear engagement fault warning is issued. This not only achieves accurate detection of unexpected gear engagement faults, but also prevents the vehicle from performing gear shifting operations under unexpected gear engagement faults, preventing mechanical jamming during gear shifting, and ensuring the driving safety of the vehicle and the mechanical safety of the transmission.

[0083] Optionally, the fault indication module 403 is specifically used to determine that there is an unexpected gear engagement fault in the gear position on the shaft if the command gear position is the same as the engagement gear position; and to issue an unexpected gear engagement fault indication based on the working clutch and the gear position on the shaft.

[0084] Optionally, the fault indication module 403 is specifically used to determine that there is an unexpected gear engagement fault in the engagement gear if the command gear position is the same as the gear position on the shaft; and to issue an unexpected gear engagement fault indication based on the working clutch and the engagement gear position.

[0085] Optionally, the fault indication module 403 is specifically used to determine that there is an unexpected gear engagement fault in the gear on the shaft if the command gear is different from the gear on the shaft and the command gear is different from the engagement gear; and to issue an unexpected gear engagement fault indication based on the working clutch, the gear on the shaft and the engagement gear.

[0086] Optionally, the fault diagnosis device based on the dual-clutch transmission also includes:

[0087] The neutral shift execution module is used to shift the pre-engaged gear of the idle clutch into neutral; and to shift the engaged gear and the gear on the shaft of the working clutch into neutral.

[0088] Optionally, the neutral shift execution module is also used to determine whether the engagement gear of the working clutch has been successfully shifted to neutral; if it is determined that the engagement gear of the working clutch has not been successfully shifted to neutral, the engagement gear is locked and a stop maintenance prompt is issued according to the engagement gear.

[0089] Optionally, the fault diagnosis device based on the dual-clutch transmission also includes:

[0090] The storage and retrieval module is used to record fault association components based on the unexpected gear engagement and save the fault association components to the persistent storage module; in response to receiving a fault retrieval command, the fault association components are displayed through the persistent storage module.

[0091] The above-described device can execute the fault diagnosis method based on a dual-clutch transmission provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the fault diagnosis method based on a dual-clutch transmission provided in any embodiment of the present invention.

[0092] Example 5

[0093] Figure 5 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device 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 electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0094] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a 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. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0095] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0096] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as a fault diagnosis method based on a dual-clutch transmission.

[0097] In some embodiments, the fault diagnosis method for a dual-clutch transmission can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed on a heterogeneous hardware accelerator via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by a processor, one or more steps of the fault diagnosis method for a dual-clutch transmission described above can be performed. Alternatively, in other embodiments, the processor can be configured to perform the fault diagnosis method for a dual-clutch transmission by any other suitable means (e.g., by means of firmware).

[0098] Various embodiments 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-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0099] Computer programs used to implement 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 executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0100] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0101] To provide user interaction, the systems and techniques described herein can be implemented on a heterogeneous hardware accelerator, which includes: 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 provides input to the heterogeneous hardware accelerator. Other types of devices can also be used to provide user interaction; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or haptic feedback); and input from the user can be received in any form (including sound input, voice input, or haptic input).

[0102] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0103] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0104] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0105] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A fault diagnosis method based on a dual-clutch transmission, characterized in that, include: To obtain the shaft gear position and engagement position of the working clutch; If it is determined that both the gear position on the shaft and the engaged gear position are not in neutral, and the gear position on the shaft is different from the engaged gear position, then it is determined that the working clutch has an unexpected gear engagement fault. Lock the command gear of the working clutch and issue a fault warning for unexpected gear engagement; After issuing a warning about an unexpected gear being engaged, the following is also included: Disengage the pre-engaged gear of the idle clutch into neutral; The engagement gear of the working clutch and the gear on the shaft are disengaged into neutral. The fault association component is recorded based on the unexpected gear engagement fault prompt, and the fault association component is saved to the persistent storage module; In response to receiving a fault read command, the fault-related components are displayed through the persistent storage module.

2. The method according to claim 1, characterized in that, The issuance of the unexpected gear engagement fault warning also includes: If the command gear position is the same as the engagement gear position, then it is determined that there is an unexpected gear engagement fault on the shaft. Based on the working clutch and the gear position on the shaft, an unexpected gear engagement fault warning is issued.

3. The method according to claim 1, characterized in that, The issuance of the unexpected gear engagement fault warning also includes: If the command gear position is the same as the gear position on the shaft, then it is determined that there is an unexpected gear engagement failure in the engagement gear position; Based on the working clutch and the engaged gear, an unexpected gear engagement fault warning is issued.

4. The method according to claim 1, characterized in that, The issuance of the unexpected gear engagement fault warning also includes: If the command gear position is different from the gear position on the shaft, and the command gear position is different from the engagement gear position, then it is determined that there is an unexpected gear engagement fault in the gear position on the shaft. Based on the working clutch, the gear position on the shaft, and the engaged gear position, an unexpected gear engagement fault warning is issued.

5. The method according to claim 1, characterized in that, After disengaging the engaged gear of the working clutch and the gear on the shaft, the process further includes: Determine whether the engagement gear of the working clutch has been successfully disengaged into neutral. If it is determined that the engagement gear of the working clutch has not been successfully shifted to neutral, the engagement gear will be locked, and a stop and maintenance prompt will be issued based on the engagement gear.

6. A fault diagnosis device based on a dual-clutch transmission, used to perform the fault diagnosis method based on a dual-clutch transmission as described in any one of claims 1-5, characterized in that, include: The gear position acquisition and execution module is used to acquire the gear position and engagement position on the shaft of the working clutch; The fault detection execution module is used to determine that the working clutch has an unexpected gear engagement fault if it is determined that both the gear position on the shaft and the engaged gear position are not in neutral, and the gear position on the shaft is different from the engaged gear position. The fault indication module is used to lock the command gear of the working clutch and issue a fault indication for unexpected gear engagement.

7. An electronic device, characterized in that, The electronic device includes: 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, the computer program being executed by the at least one processor to enable the at least one processor to perform the fault diagnosis method based on a dual-clutch transmission as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the fault diagnosis method based on a dual-clutch transmission as described in any one of claims 1-5.

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