Gear shifting fault handling method, vehicle and storage medium

Abstract

The present application provides a method for handling a gear shift failure, a vehicle, and a storage medium. The method for handling a gear shift failure includes: in response to a gear shift instruction of a target gear position, controlling a target gear shift operating assembly corresponding to the target gear position to perform a corresponding gear shift operation, and determining whether a gear shift failure occurs in the target gear shift operating assembly; and, if it is determined that a gear shift failure occurs in the target gear shift operating assembly, controlling a target hydraulic oil mechanism to alternately change the magnitude of the pressure applied to the first piston block, so that the first piston block pushes a target piston rod in the target gear shift operating assembly to repeatedly impact the second piston block, so as to correct the second piston block when the second piston block rolls over. The first piston block and the second piston block are respectively abutted against the two ends of the target piston rod, and the second piston block is a piston block used by the target gear shift operating assembly to push the target piston rod when the gear shift is shifted to the target gear position. The method can solve the problem of gear shift failure caused by the piston block rolling over.

Description

Technical Field

[0001] The present application relates to the technical field of motor vehicle transmissions, and in particular to a method for handling a gear shift failure, a vehicle, and a storage medium. Background Art

[0002] Existing transmissions usually use hydraulic oil for hydraulic drive, fixing the piston rod in the piston and the shift fork in the shift fork structure, so that the hydraulic oil acts on the piston blocks at both ends of the piston rod to drive the piston rod to move horizontally, thereby driving the shift fork to push the synchronizer gear sleeve to engage or disengage with the shift gear to achieve the gear change of the transmission.

[0003] In some transmissions, the piston rod abuts against the piston blocks at both ends. Since the end surface area of ​​the piston rod is smaller than the end surface area of ​​the piston block in contact with it, and in actual products, there are also cases where manufacturing tolerances and assembly tolerances are not appropriate. Then, during the gear shifting process, when the rotation axis of the piston block does not coincide with the axis of the piston cavity and forms a certain angle, it is possible that the piston block pushed by the piston rod will be pushed to the side, making it impossible to push the piston to shift gears by applying oil pressure, which will lead to vehicle failure and even affect driving safety in severe cases. To solve the problem of being unable to shift gears due to the sideways tilt of the piston block, the existing method is to unpack the transmission, take out the overturned piston block and press in a new piston block according to the process requirements. This method is time-consuming, labor-intensive and inefficient. Summary of the Invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a gear shift failure processing method, a vehicle and a storage medium.

[0005] To achieve the above-mentioned purpose, the present application provides a method for handling gear engagement failure, which is applied to the vehicle's gear shifting system. The gear shifting system includes a gearbox and several groups of gear engagement operating components. Each group of gear engagement operating components includes a piston rod, a shift fork fixedly connected to the piston rod, two piston blocks respectively abutting against the two ends of the piston rod, and a hydraulic oil mechanism. The piston rod is movably installed in the gearbox and is transmission-connected to the speed change device installed in the gearbox; the hydraulic oil mechanism is used to apply pressure to push the piston block to drive the shift fork on the piston rod to move, so that the shift fork cooperates with the speed change device to switch gears. The gear shift fault handling method includes: in response to a gear shift command of a target gear position, controlling a target gear shift operating assembly corresponding to the target gear position to perform a corresponding gear shift operation, and determining whether a gear shift fault has occurred in the target gear shift operating assembly; and, if it is determined that a gear shift fault has occurred in the target gear shift operating assembly, controlling a target hydraulic oil mechanism to alternately change the amount of pressure applied to a first piston block, so that the first piston block pushes a target piston rod in the target gear shift operating assembly to repeatedly impact a second piston block, thereby correcting the installation state of the second piston block to a normal state when the second piston block rolls over. The target hydraulic oil mechanism is a hydraulic oil mechanism in the target gear shift operating assembly, the first piston block and the second piston block are respectively abutted against both ends of the target piston rod, and the second piston block is a piston block used by the target gear shift operating assembly to push the target piston rod when the target gear shift operating assembly is shifted to the target gear position.

[0006] The gear shift failure handling method provided by the present application, when a gear shift failure occurs, controls the target hydraulic oil mechanism in the target gear shift operating assembly to alternately change the size of the pressure applied to the first piston block, so that the non-rollover piston block pushes the target piston rod in the target gear shift operating assembly to repeatedly impact the rollover piston block, and then the rollover piston block is gradually corrected to a normal state after being repeatedly impacted. In this way, the problem of gear shift failure caused by the rollover of the piston block can be effectively solved without disassembling the gearbox. The method is efficient and convenient and can improve the safety of the vehicle.

[0007] Optionally, the hydraulic oil mechanism in each group of the gear shift operating components includes a first switching valve, a first cylinder body, and a second cylinder body, respectively, located at both ends of the piston rod; wherein the first piston block is movably mounted in the first cylinder body, and the second piston block is movably mounted in the second cylinder body; the first switching valve is used to open or close a first oil circuit connected to the first cylinder body, and hydraulic oil flows into the first cylinder body through the first oil circuit, thereby applying pressure to the first piston block. Controlling the target hydraulic oil mechanism to alternately change the amount of pressure applied to the first piston block includes: controlling the first switching valve in the target gear shift operating component to alternately open or close, thereby alternately opening or closing the first oil circuit.

[0008] Optionally, the hydraulic oil mechanism in each group of the gear shift operating components further includes a second on-off valve, a first proportional valve, and a second proportional valve; wherein the second on-off valve is used to open or close the second oil circuit connected to the second cylinder, through which hydraulic oil flows into the second cylinder to apply pressure to the second piston block; the first proportional valve is used to adjust the flow rate of the hydraulic oil in the first oil circuit, and the second proportional valve is used to adjust the flow rate of the hydraulic oil in the second oil circuit. Before controlling the first on-off valve in the target gear shift operating component to alternately open or close, the gear shift fault handling method further includes: controlling the first and second proportional valves to be adjusted to maximum opening; and controlling both the first and second on-off valves to open so that the first and second piston blocks tightly abut against both ends of the target piston rod.

[0009] Optionally, the hydraulic oil mechanism in each group of the gear shifting operating components includes a first switching valve, a second switching valve, a first proportional valve, a second proportional valve, and a first cylinder body and a second cylinder body respectively located at both ends of the piston rod; wherein, the first piston block is movably installed in the first cylinder body, and the second piston block is movably installed in the second cylinder body, the first switching valve is used to open or close the first oil circuit connected to the first cylinder body, and the second switching valve is used to open or close the second oil circuit connected to the second cylinder body, the hydraulic oil flows into the first cylinder body through the first oil circuit to apply pressure to the first piston block, and the hydraulic oil flows into the second cylinder body through the second oil circuit to apply pressure to the second piston block, the first proportional valve is used to adjust the flow rate of the hydraulic oil in the first oil circuit, and the second proportional valve is used to adjust the flow rate of the hydraulic oil in the second oil circuit. The control of the target hydraulic oil mechanism to alternately change the magnitude of the pressure applied to the first piston block includes: controlling the first switching valve and the second switching valve to open so that the first piston block and the second piston block abut against the two ends of the target piston rod; and controlling the first proportional valve to alternately switch between a first opening and a second opening, wherein the first opening and the second opening are different.

[0010] Optionally, the first opening is a maximum opening, and the second opening is a minimum opening.

[0011] Optionally, the gear shift fault handling method also includes: counting the number of times the target hydraulic oil mechanism alternately changes the pressure applied to the first piston block, and when the number reaches a preset number, controlling the first switch valve and the second switch valve to close, and controlling the first proportional valve and the second proportional valve to adjust to the minimum opening.

[0012] Optionally, the gear shifting system includes at least two groups of the gear shifting operating components, a first clutch associated with a part of the gear shifting operating components, and a second clutch associated with the remaining gear shifting operating components; when it is determined that the target gear shifting operating component has a gear shifting fault, the gear shifting fault handling method also includes: and, controlling the clutch associated with the target gear shifting operating component to separate, controlling the gear shifting operating component associated with another clutch to shift to an adjacent gear of the target gear, and controlling the other clutch to engage.

[0013] Optionally, each group of the gear shifting operating components also includes a displacement sensor for detecting the position of the shift fork; the judgment of whether the target gear shifting operating component has a gear shifting failure includes: when the target gear shifting operating component performs the corresponding gear shifting operation, detecting the position of the shift fork through the displacement sensor, and judging whether the shift fork moves to the target position corresponding to the target gear; if the shift fork moves to the target position, it is determined that the gear shifting is successful; if the shift fork does not move to the target position, counting the number of times the gear shifting operation is performed, and judging whether the number of times the gear shifting operation is performed reaches a preset number; if the number of times the gear shifting operation is performed does not reach the preset number, controlling the target gear shifting operating component to perform the gear shifting operation again, and detecting the position of the shift fork through the displacement sensor again, and judging whether the shift fork moves to the target position corresponding to the target gear; and, if the number of times the gear shifting operation is performed reaches the preset number, it is determined that the target gear shifting operating component has a gear shifting failure.

[0014] The present application also provides a vehicle comprising a gear shifting system, a memory, and a controller. The memory is configured to store executable instructions. The controller is electrically connected to the memory and the gear shifting system, respectively, and is configured to execute the executable instructions stored in the memory to implement the aforementioned gear engagement fault handling method in the gear shifting system.

[0015] The present application also provides a computer-readable storage medium, which stores executable instructions. When the executable instructions are executed by a processor, the above-mentioned gear shift fault processing method is implemented.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a vehicle provided in an embodiment of the present application.

[0018] Figure 2 This is a first structural diagram of the gear shifting system provided in an embodiment of the present application.

[0019] Figure 3 This is a second structural diagram of the gear shifting system provided in an embodiment of the present application.

[0020] Figure 4 It is a flow chart of the first method for handling gear shift failure provided in an embodiment of the present application.

[0021] Figure 5 It is a flow chart of the second method for handling gear shift failure provided in an embodiment of the present application.

[0022] Figure 6 yes Figure 5 Detailed flowchart of step 623 in FIG.

[0023] Figure 7 It is a flow chart of the third method for handling gear shift failure provided in an embodiment of the present application.

[0024] The following are the descriptions of the reference numerals:

[0025] Vehicle 10

[0026] Gear shifting system 100

[0027] Power Source 200

[0028] Gearbox 210

[0029] First clutch 110

[0030] Second clutch 120

[0031] Cylinders 301, 302

[0032] Piston blocks 311, 312

[0033] Piston rod 320

[0034] Fork 321

[0035] On-off valves 331 and 332

[0036] Oil lines 351 and 352

[0037] Proportional valves 341, 342

[0038] Drive shaft 211

[0039] Drive shaft 212

[0040] Left gear 11

[0041] Right gear 22

[0042] Left gear 1

[0043] Right gear 2

[0044] Memory 400

[0045] Controller 300

[0046] Steps 610-620, 611-613, 621-626, 6231-6326

[0047] The following specific implementation methods will illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] like Figure 1 As shown, vehicle 10 includes a gear shifting system 100 and a power source 200. The gear shifting system 100 includes a first clutch 110, a second clutch 120, a transmission 210, and at least two gear shifting operating assemblies (not shown). When the first clutch 110 or the second clutch 120 is engaged, the power generated by the power source 200 is transmitted to the input shaft of the transmission 210. The driver can then engage a desired gear using the transmission 210, the shifting mechanism, and synchronizers (not shown). Alternatively, the vehicle 10 can automatically shift to a gear that matches the vehicle speed based on the transmission 210, the shifting mechanism, and synchronizers (not shown). In this embodiment, the transmission 210 has a first gear group and a second gear group, each associated with a clutch. Specifically, when the vehicle is operating in the first gear group, the first clutch 110 is engaged, and when the vehicle is operating in the second gear group, the second clutch 120 is engaged. Among the at least two groups of gear-engaging operating components, a portion is associated with the first clutch 110, and the remaining portion is associated with the second clutch 120. Preferably, a plurality of gears are alternately allocated to the first gear group and the second gear group. For example, the first gear group may include the first gear, the third gear, the fifth gear, and the seventh gear, and the second gear group may include the second gear, the fourth gear, the sixth gear, and the reverse gear. Furthermore, the first gear and the third gear share a group of gear-engaging operating components, the fifth gear and the seventh gear share a group of gear-engaging operating components, the second gear and the fourth gear share a group of gear-engaging operating components, and the sixth gear and the reverse gear share a group of gear-engaging operating components. The power source 200 may be an automobile engine or an electric motor.

[0051] The following combination Figure 2-Figure 3 , a set of the gear shifting operating components and the structure and working principle of the gearbox 210 are introduced in detail.

[0052] like Figure 2 As shown, the gear shifting operating assembly includes a piston rod 320, a shift fork 321 fixedly connected to the piston rod 320, two piston blocks (piston block 311 and piston block 312) respectively abutting the ends of the piston rod 320, and a hydraulic oil mechanism. The piston rod 320 is movably mounted in the gearbox 210 and is in driving connection with the speed change device installed in the gearbox 210. The hydraulic oil mechanism is used to push the piston block to move the shift fork 321 on the piston rod 320, so that the shift fork 321 cooperates with the speed change device to switch gears.

[0053] Furthermore, the hydraulic oil mechanism in the gear shifting assembly includes an on / off valve 331, an on / off valve 332, a proportional valve 341, a proportional valve 342, and a cylinder body 301 and a cylinder body 302, respectively, located at both ends of the piston rod 320. The piston block 311 is movably mounted within the cylinder body 301, and the piston block 312 is movably mounted within the cylinder body 302. The ends of the piston rod 320 extend into the cylinder bodies 301 and 302, respectively. Hydraulic oil can flow into the cylinder body 301 through an oil passage 351, thereby applying pressure to the piston block 311. Hydraulic oil can also flow into the cylinder body 302 through an oil passage 352, thereby applying pressure to the piston block 312. Among them, the switch valve 331 is used to open or close the oil circuit 351, the switch valve 332 is used to open or close the oil circuit 352, the proportional valve 341 is used to adjust the flow rate of the hydraulic oil in the oil circuit 351, and the proportional valve 342 is used to adjust the flow rate of the hydraulic oil in the oil circuit 352. It can be understood that the pressure exerted by the hydraulic oil is positively correlated with the flow rate. In other embodiments, the switch valve 331 and the switch valve 332 can be integrated into a multi-way valve, or the switch valve 331 and the switch valve 332 in the gear shifting operating component in the same gear group can be integrated into a multi-way valve. In this way, the structure can be simplified and space can be saved, which is not limited here. Optionally, the hydraulic oil mechanism in the gear shifting operating component can also include a pressure valve for adjusting the pressure of the hydraulic oil.

[0054] Furthermore, the speed change device in the transmission 210 includes a drive shaft 212 and a transmission shaft 211 rotatably mounted within the transmission 210. Both the drive shaft 212 and the transmission shaft 211 are parallel to the piston rod 320, with the transmission shaft 211 positioned between the drive shaft 212 and the piston rod 320. A shift fork gear is coaxially slidably mounted on the transmission shaft 211. The shift fork gear can slide axially along the transmission shaft 211 and rotate with the rotation of the shift fork gear. One end of the shift fork 321 is fixedly connected to the piston rod 320, and the other end engages with the shift fork gear on the transmission shaft 211. Specifically, the shift fork gear includes a left gear 1 and a right gear 2. At least one shift gear is coaxially fixedly mounted on the drive shaft 212, meshing with the shift fork gear. Specifically, the shift gears include a left shift gear 11 and a right shift gear 22.

[0055] Optionally, the gear shifting operating assembly further includes a displacement sensor (not shown) for detecting the position of the shift fork 321. In the embodiment of the present application, taking the left gear position gear 11 corresponding to the first gear and the right gear position gear 22 corresponding to the third gear as an example, when the left gear 1 is engaged with the left gear position gear 11, the displacement sensor detects that the shift fork 321 has moved to the first target position, indicating that the first gear has been successfully engaged; when the right gear 2 is engaged with the right gear position gear 22, the displacement sensor detects that the shift fork 321 has moved to the second target position, indicating that the third gear has been successfully engaged.

[0056] Specifically, when a command to shift into first gear is received, the switch valve 332 opens, i.e., opens the oil circuit 352, allowing hydraulic oil to flow into the cylinder 302, pushing the piston block 312 and the piston rod 320, thereby driving the shift fork 321 and the shift fork gear to move to the left. When the left gear 1 engages with the left shift gear 11, the first gear is successfully engaged. When a command to shift into third gear is received, the switch valve 331 opens, i.e., opens the oil circuit 351, allowing hydraulic oil to flow into the cylinder 301, pushing the piston block 311 and the piston rod 320, thereby driving the shift fork 321 and the shift fork gear to move to the right. When the right gear 2 engages with the right shift gear 22, third gear is successfully engaged.

[0057] However, since the end surface area of ​​the piston rod 320 is smaller than the end surface area of ​​the piston blocks 311 and 312 in contact therewith, and there are also cases where manufacturing tolerances and assembly tolerances are not appropriate in actual products, then during the gear shifting process, when the rotation axes of the piston blocks 311 and 312 do not coincide with the axes of the cylinder bodies 301 and 302 and form a certain angle, the piston blocks pushed by the piston rod 320 may be pushed to the side. Figure 3 As shown, during the shifting process into third gear, the piston block 312 is pushed sideways by the piston rod 320. In this situation, when shifting back into first gear, the piston block 312 is leaking oil due to its sideways tilt. This prevents the hydraulic oil from applying pressure to the piston block 312 to push it, preventing the shifting into first gear. This can cause a malfunction of the vehicle 10 and, in severe cases, even compromise driving safety. Furthermore, to address the issue of being unable to shift gears due to a sideways piston block, the existing method involves unpacking the transmission 210, removing the sideways piston block, and pressing in a new one according to process requirements. This method is time-consuming, labor-intensive, and inefficient.

[0058] See also Figure 4 In order to solve the problem of gear shifting failure caused by the piston block rolling over, the present application provides a gear shifting failure processing method, which specifically includes the following steps:

[0059] Step 610, in response to the gear shift instruction of the target gear, control the target gear shift operating component corresponding to the target gear to perform the corresponding gear shift operation, and determine whether the target gear shift operating component has a gear shift failure. If it is determined that the target gear shift operating component has a gear shift failure, then execute step 620. Otherwise, the process ends. For ease of understanding, the embodiment of the present application takes the target gear as the first gear, Figure 3 The gear shifting operation assembly shown is described using the target gear shifting operation assembly as an example. The target gear shifting operation assembly performs the corresponding gear shifting operation by opening the switch valve 332 and further adjusting the opening of the proportional valve 342. The greater the opening of the proportional valve, the greater the flow rate of the hydraulic oil.

[0060] Step 620, control the target hydraulic oil mechanism to alternately change the magnitude of the pressure applied to the first piston block, so that the first piston block pushes the target piston rod 320 in the target gear shift operating assembly to repeatedly impact the second piston block, so as to correct the installation state of the second piston block to a normal state (such as when the second piston block rolls over). Figure 2The vertical state shown in the figure, that is, the rotation axis of the piston block 312 is parallel to the axis of the cylinder body 302). It should be noted that, in the embodiment of the present application, the target hydraulic oil mechanism is the hydraulic oil mechanism in the target gear shifting operating assembly, the first piston block and the second piston block are respectively abutted against the two ends of the target piston rod 320, and the second piston block is the piston block used by the target gear shifting operating assembly to push the target piston rod 320 when the gear shifting operation is in the process of shifting to the target gear. Figure 3 As shown, in this embodiment, the target gear position is the first gear position, then the first piston block is the piston block 311, and the second piston block is the piston block 312. In other embodiments, when the target gear position is the third gear position, then the second piston block is the piston block 311, and the first piston block is the piston block 312. When the piston block 312 rolls over, by alternately changing the pressure of the hydraulic oil on the piston block 311, the piston rod 320 is driven to alternately change its contact force on the piston block 312, thereby causing the piston block 311 to push the piston rod 320 to repeatedly impact the piston block 312. In this way, the installation state of the piston block 312 can be gradually corrected to a normal state, thus solving the problem of gear shifting failure caused by the piston block rolling over. It is understandable that the greater the rollover angle of the piston block, the more difficult it is to correct. According to the test results, in extreme cases, when the piston block flips 45°, by implementing the gear shift fault handling method provided in this application, the flipped piston can be successfully corrected to a normal state, allowing the gear shifting system 100 to return to normal.

[0061] In actual application, if the piston block is found to have overturned before the gearbox is installed on the vehicle, it is only necessary to place the gearbox on the gearbox assembly test bench and run the gear engagement fault handling method provided in this application through program control to correct the piston block to a normal state. If the piston block is found to have overturned after the gearbox is installed on the vehicle, the technician only needs to connect the diagnostic equipment to the vehicle control network through the on-board diagnostics system (OBD) and execute the gear engagement fault handling method to correct the piston block to a normal state. In addition, engineers can also upgrade the software program through Over The Air technology (OTA) and move the gear engagement fault handling method into the vehicle without having to change the hardware equipment in the vehicle, which is convenient and fast.

[0062] The gear shift failure handling method provided in the present application, when a gear shift failure occurs, controls the target hydraulic oil mechanism in the target gear shift operating assembly to alternately change the size of the pressure applied to the first piston block, so that the non-rollover piston block pushes the target piston rod 320 in the target gear shift operating assembly to repeatedly impact the rollover piston block, and then the rollover piston block is gradually corrected to a normal state after being repeatedly impacted. In this way, the problem of gear shift failure caused by the rollover of the piston block can be effectively solved without disassembling the gearbox. The method is efficient and convenient and can improve the safety of the vehicle.

[0063] See also Figure 5 , Figure 5 This is a flow chart of a second method for handling a gear shift failure provided by an embodiment of the present application, wherein: Figure 5 Steps 611 to 613 in Figure 4 The detailed process of step 610, steps 621 to 624 are Figure 4 The detailed process of step 620 is as follows: specifically, the gear shift fault handling method includes the following steps:

[0064] Step 611: In response to a gear shift instruction of a target gear position, control a target gear shift operation component corresponding to the target gear position to perform a corresponding gear shift operation.

[0065] In step 612, the position of the shift fork 321 is detected by a displacement sensor, and a determination is made as to whether the shift fork 321 has moved to the target position corresponding to the target gear position. If the shift fork 321 has moved to the target position (corresponding to the first target position), the gear engagement is determined to be successful, and the process ends. If the shift fork 321 has not moved to the target position, step 613 is executed.

[0066] In step 613, the number of gear shifting operations performed is counted, and a determination is made as to whether the number of such operations has reached a first preset number. If the number of such operations has not reached the first preset number, the process returns to step 611, where the target gear shifting assembly is controlled to perform the gear shifting operation again. If the number of such operations has reached the first preset number, a gear shifting failure is determined to have occurred in the target gear shifting assembly, and steps 621 and 624 are executed. It is understood that if the target gear position cannot be engaged after multiple gear shifting operations, a piston block rollover may be the cause.

[0067] Step 621: Control the first and second proportional valves to their maximum openings. It should be noted that, in the embodiment of the present application, the cylinder in which the first piston block is located is referred to as the first cylinder (corresponding to cylinder 301), the oil circuit connected to the first cylinder is referred to as the first oil circuit (corresponding to oil circuit 351), the on-off valve and the proportional valve in the first oil circuit are referred to as the first on-off valve (corresponding to on-off valve 331) and the first proportional valve (corresponding to proportional valve 341), respectively; the cylinder in which the second piston block is located is referred to as the second cylinder (corresponding to cylinder 302), the oil circuit connected to the second cylinder is referred to as the second oil circuit (corresponding to oil circuit 352), and the on-off valve and the proportional valve in the second oil circuit are referred to as the second on-off valve (corresponding to on-off valve 332) and the second proportional valve (corresponding to proportional valve 342), respectively.

[0068] Step 622: Control the first switch valve and the second switch valve to open, so that the first piston block and the second piston block abut against both ends of the target piston rod. Preferably, the first switch valve and the second switch valve are opened simultaneously.

[0069] Step 623 controls the first switch valve in the target gear shifting operating assembly to alternately open or close, thereby alternately opening or closing the first oil circuit. It is understood that before performing the correction operation (i.e., step 623), the proportional valves 341 and 342 are adjusted to their maximum openings, and the switch valves 331 and 332 are opened simultaneously, so that the piston blocks 311 and 312 can abut as tightly as possible against the ends of the piston rod 320. When performing the correction operation, since the proportional valves 341 and 342 are at their maximum openings, controlling the switch valve 331 to alternately open or close allows the piston rod 320 to strongly and repeatedly impact the piston block 312, resulting in a better correction effect.

[0070] Preferably, when executing step 623, the number of times the target hydraulic oil mechanism alternately changes its pressure on the first piston block 311 (i.e., the number of times the first switch valve in the target gear shift operating assembly is alternately opened or closed) is counted. When the number reaches a second preset number, the first switch valve and the second switch valve are controlled to close, and the first proportional valve and the second proportional valve are controlled to adjust to their minimum opening. It is understood that if the gear shift failure is caused by other faults, i.e., reasons other than piston block rollover, then performing a corrective operation will not eliminate the fault. Therefore, setting an upper limit on the number of times the first switch valve in the target gear shift operating assembly is alternately opened or closed can avoid endless corrective operations due to gear shift failures caused by other faults, thereby saving energy.

[0071] Step 624 controls the clutch associated with the target gear engaging assembly to disengage, controls the gear engaging assembly associated with another clutch to engage the gear adjacent to the target gear, and controls the another clutch to engage. It is understood that when a gear engaging fault occurs in the target gear (e.g., first gear), disengaging the clutch associated with the faulty gear (e.g., clutch 110), shifting the gear engaging assembly in another gear group to the gear adjacent to the target gear (e.g., second gear), and engaging the other clutch (e.g., clutch 120) ensures that the power source 200 can continue to provide power to the vehicle 10 without causing the vehicle 10 to stall, thereby improving driving safety.

[0072] See also Figure 6 , Figure 6 yes Figure 5 The detailed flow chart of step 623 in FIG. 1 , specifically, controlling the first switch valve in the target gear shift operating assembly to alternately open or close includes the following steps:

[0073] Step 6231, controlling the first switch valve to close for a first preset time period.

[0074] Step 6232: Control the first switch valve to open for a second preset time. The values ​​of the first preset time and the second preset time can be obtained through experiments and are not limited here.

[0075] Step 6233, detect the position of the shift fork 321 through the displacement sensor, and determine whether the shift fork 321 has moved to the target position corresponding to the target gear. If the shift fork 321 has moved to the target position corresponding to the target gear, it is determined that the gear engagement fault has been repaired, and step 6235 is executed. Otherwise, step 6234 is executed. It should be noted that, since the proportional valve 341 and the proportional valve 342 are adjusted to the maximum opening before the correction operation is performed, if the piston block 312 has been corrected during the correction process, then, during the period when the switch valve 331 is closed, the piston block 312 will be subjected to the pressure of the hydraulic oil and push the piston rod 320 and the shift fork 321621 to the left until the shift fork 321 moves to the target position corresponding to the target gear (corresponding to the first target position), which indicates that the target gear engagement operating component has been engaged in the target gear and the gear engagement fault has been repaired. On the contrary, if the piston block 312 has not been corrected during the correction process, the shift fork 321 will not be able to move to the target position corresponding to the target gear position. Optionally, when it is determined that the gear engagement fault has been corrected, the gear engagement fault handling method may further include: outputting an indication signal indicating that the gear engagement fault has been corrected to prompt the user.

[0076] In step 6234, the number of times the first on-off valve is closed is counted, and a determination is made as to whether the number of times the first on-off valve is closed has reached a second preset number of times. If it is determined that the number of times the first on-off valve is closed has reached the second preset number of times, step 6236 is executed. Otherwise, the process returns to step 6231 and the first on-off valve is again closed for the first preset time period.

[0077] Step 6235: Control the target gear engaging operating component to exit the gear position. It should be noted that since the target gear engaging operating component is still in the target gear position after the gear engaging fault is repaired, controlling the target gear engaging operating component to exit the gear position can prevent gear conflicts or vehicle start-up with gear engaged.

[0078] Step 6236: Control the first and second switch valves to close, and control the first and second proportional valves to be adjusted to minimum openings. This restores the hydraulic oil mechanism in the target gear shifting operating assembly to a state of minimum energy consumption, thereby further saving energy.

[0079] See also Figure 7 , Figure 7 : is a flowchart of a third gear shift fault processing method provided in an embodiment of the present application, wherein the gear shift fault processing method specifically includes the following steps:

[0080] Step 611: In response to a gear shift instruction of a target gear position, control a target gear shift operation component corresponding to the target gear position to perform a corresponding gear shift operation.

[0081] In step 612, the position of the shift fork 321 is detected by a displacement sensor, and a determination is made as to whether the shift fork 321 has moved to the target position corresponding to the target gear position. If the shift fork 321 has moved to the target position (corresponding to the first target position), the gear engagement is determined to be successful, and the process ends. If the shift fork 321 has not moved to the target position, step 613 is executed.

[0082] In step 613, the number of times the gear shift operation is performed is counted, and a determination is made as to whether the number of times the gear shift operation has been performed has reached a first preset number. If the number of times the gear shift operation has been performed has not reached the first preset number, the process returns to step 611, where the target gear shift operation component is controlled to perform the gear shift operation again. If the number of times the gear shift operation has been performed has reached the first preset number, a gear shift failure is determined to have occurred in the target gear shift operation component, and steps 624 and 625 are executed.

[0083] Step 624 , controlling the clutch associated with the target gear shift operating component to be disengaged, controlling the gear shift operating component associated with another clutch to be shifted to a gear adjacent to the target gear, and controlling the another clutch to be engaged.

[0084] In step 625, both the first and second on-off valves are controlled to open, so that the first and second piston blocks abut against the ends of the target piston rod. Preferably, step 625 further includes: before controlling both the first and second on-off valves to open, adjusting the first and second proportional valves to their maximum openings. This ensures that the piston blocks 311 and 312 abut as tightly as possible against the ends of the piston rod 320 before performing the correction operation (i.e., step 626).

[0085] Step 626 : Control the first proportional valve to switch alternately between a first opening and a second opening, wherein the first opening and the second opening are different.

[0086] Figure 7 The embodiment shown is Figure 5 The embodiments shown are similar except that: Figure 5 In the embodiment shown, the piston rod 320 repeatedly impacts the second piston block by controlling the first switch valve to alternately open or close. Figure 7 In the illustrated embodiment, the piston rod 320 repeatedly impacts the second piston block by controlling the first proportional valve to alternately switch between a first opening and a second opening. The principles of the two methods are similar. It will be appreciated that the greater the difference between the first and second openings, the greater the impact force of the piston rod 320 on the second piston block. Therefore, preferably, the first opening is the maximum opening, and the second opening is the minimum opening.

[0087] Please refer again Figure 1 Based on the same inventive concept, the present application also provides a vehicle 10 , which includes a gear shifting system 100 , a power source 200 , a memory 400 and a controller 300 .

[0088] The power source 200 is in transmission connection with the gear shifting system 100, and the gear shifting system 100 is in transmission connection with the wheels of the vehicle 10. The power source 200 is used to output power to drive the vehicle 10, and the gear shifting system 100 is used to adjust the speed and shift gears of the vehicle 10.

[0089] The memory 400 is used to store executable instructions. The controller 300 is electrically connected to the memory 400 and the gear shifting system 100 , and the controller 300 is used to execute the executable instructions stored in the memory 400 to implement the above-mentioned gear engagement fault processing method in the gear shifting system 100 .

[0090] Based on the same inventive concept, the present application also provides a computer-readable storage medium, which stores executable instructions. When the executable instructions are executed by the processor, the above-mentioned gear shift fault processing method is implemented.

[0091] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media.Computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium.Computer-readable storage medium can be, for example, but not limited to, a system, device or component of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination thereof.More specific examples (non-exhaustive list) of computer-readable storage medium include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, a device or a device or used in combination with it.

[0092] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0093] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0094] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as C or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0095] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for handling a gear shift failure, applied to a vehicle's gear shifting system, wherein the gear shifting system comprises a gearbox and several groups of gear shifting operating components, each group of the gear shifting operating components comprising a piston rod, a shift fork fixedly connected to the piston rod, two piston blocks respectively abutting against both ends of the piston rod, and a hydraulic oil mechanism, wherein the piston rod is movably mounted in the gearbox and is transmission-connected to a gear shifting device installed in the gearbox; the hydraulic oil mechanism is used to apply pressure to push the piston block to drive the shift fork on the piston rod to move, so that the shift fork cooperates with the gear shifting device to switch gears; and is characterized in that: The gear shift fault processing method includes: In response to a gear shift instruction of a target gear position, controlling a target gear shift operating component corresponding to the target gear position to perform a corresponding gear shift operation, and determining whether a gear shift failure occurs in the target gear shift operating component; and If it is determined that the target gear shifting operating component has a gear shifting failure, the target hydraulic oil mechanism is controlled to alternately change the size of the pressure applied to the first piston block, so that the first piston block pushes the target piston rod in the target gear shifting operating component to repeatedly impact the second piston block, so as to correct the installation state of the second piston block to a normal state when the second piston block rolls over; wherein, the target hydraulic oil mechanism is the hydraulic oil mechanism in the target gear shifting operating component, the first piston block and the second piston block are respectively abutted against the two ends of the target piston rod, and the second piston block is the piston block used to push the target piston rod when the target gear shifting operating component is shifting to the target gear position.

2. The method for handling a gear shift failure according to claim 1, wherein: The hydraulic oil mechanism in each group of the gear shift operating assembly includes a first switch valve, a first cylinder body and a second cylinder body respectively located at both ends of the piston rod; wherein the first piston block is movably mounted in the first cylinder body, and the second piston block is movably mounted in the second cylinder body; the first switch valve is used to open or close a first oil circuit connected to the first cylinder body, and hydraulic oil flows into the first cylinder body through the first oil circuit, thereby applying pressure to the first piston block; The controlling the target hydraulic oil mechanism to alternately change the magnitude of the pressure applied to the first piston block includes: The first switching valve in the target gear shift operation assembly is controlled to be alternately opened or closed, thereby alternately opening or closing the first oil passage.

3. The method for handling a gear shift failure according to claim 2, wherein: The hydraulic oil mechanism in each group of the gear shift operating assembly further includes a second on-off valve, a first proportional valve, and a second proportional valve; wherein the second on-off valve is used to open or close a second oil circuit connected to the second cylinder body, and hydraulic oil flows into the second cylinder body through the second oil circuit, thereby applying pressure to the second piston block; the first proportional valve is used to adjust the flow rate of the hydraulic oil in the first oil circuit, and the second proportional valve is used to adjust the flow rate of the hydraulic oil in the second oil circuit; Before controlling the first switch valve in the target gear shifting operation assembly to alternately open or close, the gear shifting fault processing method further includes: Controlling the first proportional valve and the second proportional valve to be adjusted to maximum opening; The first switch valve and the second switch valve are both controlled to be open, so that the first piston block and the second piston block are tightly abutted against both ends of the target piston rod.

4. The method for handling a gear shift failure according to claim 1, wherein: The hydraulic oil mechanism in each group of the gear shift operating components includes a first switch valve, a second switch valve, a first proportional valve, a second proportional valve, and a first cylinder body and a second cylinder body respectively located at both ends of the piston rod; wherein, the first piston block is movably mounted in the first cylinder body, and the second piston block is movably mounted in the second cylinder body, the first switch valve is used to open or close the first oil circuit connected to the first cylinder body, and the second switch valve is used to open or close the second oil circuit connected to the second cylinder body, the hydraulic oil flows into the first cylinder body through the first oil circuit, thereby applying pressure to the first piston block, and the hydraulic oil flows into the second cylinder body through the second oil circuit, thereby applying pressure to the second piston block, the first proportional valve is used to adjust the flow rate of the hydraulic oil in the first oil circuit, and the second proportional valve is used to adjust the flow rate of the hydraulic oil in the second oil circuit; The controlling the target hydraulic oil mechanism to alternately change the magnitude of the pressure applied to the first piston block includes: Controlling the first on-off valve and the second on-off valve to open, so that the first piston block and the second piston block abut against both ends of the target piston rod; The first proportional valve is controlled to switch alternately between a first opening degree and a second opening degree, wherein the first opening degree and the second opening degree are different.

5. The method for handling a gear shift failure according to claim 4, wherein: The first opening is a maximum opening, and the second opening is a minimum opening.

6. The method for handling a gear shift failure according to claim 3, wherein: The gear shift fault processing method further includes: The number of times the target hydraulic oil mechanism alternately changes the pressure applied to the first piston block is counted. When the number reaches a preset number, the first switch valve and the second switch valve are controlled to close, and the first proportional valve and the second proportional valve are controlled to adjust to the minimum opening.

7. The method for handling a gear shift failure according to any one of claims 1 to 6, wherein: The gear shifting system includes at least two groups of the gear operating components, a first clutch associated with a portion of the gear operating components, and a second clutch associated with the remaining portion of the gear operating components; When it is determined that a gear shifting fault occurs in the target gear shifting operating component, the gear shifting fault handling method further includes: A clutch associated with the target gear shift operating component is controlled to be disengaged, a gear shift operating component associated with another clutch is controlled to be shifted to a gear adjacent to the target gear, and the another clutch is controlled to be engaged.

8. The method for handling a gear shift failure according to claim 1, wherein: Each group of the gear shifting operating components further includes a displacement sensor for detecting a position of a shift fork; and determining whether a gear shifting fault occurs in the target gear shifting operating component includes: When the target gear shifting operation component performs a corresponding gear shifting operation, the position of the shift fork is detected by the displacement sensor, and it is determined whether the shift fork moves to the target position corresponding to the target gear position; If the shift fork moves to the target position, it is determined that the gear is engaged successfully; If the shift fork does not move to the target position, counting the number of times the gear shift operation is performed, and determining whether the number of times the gear shift operation is performed reaches a preset number; If the number of times the gear shift operation is performed does not reach a preset number, controlling the target gear shift operation component to perform the gear shift operation again, detecting the position of the shift fork by the displacement sensor again, and determining whether the shift fork has moved to the target position corresponding to the target gear position; and If the number of times the gear shifting operation is performed reaches a preset number, it is determined that a gear shifting fault occurs in the target gear shifting operation component.

9. A vehicle, characterized in that: include: Gear shifting system; a memory for storing executable instructions; as well as A controller is electrically connected to the memory and the gear shifting system respectively, and the controller is used to execute the executable instructions stored in the memory to implement the gear shifting fault processing method described in any one of claims 1 to 8 in the gear shifting system.

10. A computer-readable storage medium, characterized in that Executable instructions are stored, and when the executable instructions are executed by the processor, the gear shift fault processing method described in any one of claims 1 to 8 is implemented.

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