CN117967782A - Method for handling gear failure, vehicle and storage medium - Google Patents

Abstract

The application provides a method for processing a gear failure, a vehicle and a storage medium, wherein the method for processing the gear failure comprises the following steps: responding to a gear shift instruction of a target gear, controlling a target gear shift operation assembly corresponding to the target gear to execute corresponding gear shift operation, and judging whether the target gear shift operation assembly has gear shift faults or not; and if the target gear-shifting operation assembly is determined to have a gear-shifting fault, controlling the target hydraulic oil mechanism to alternately change the pressure applied by the target hydraulic oil mechanism to the first piston block, so that the first piston block pushes a target piston rod in the target gear-shifting operation assembly to repeatedly impact the second piston block, and correcting the second piston block when the second piston block turns on one's side. The first piston block and the second piston block are respectively abutted to two ends of the target piston rod, and the second piston block is used for pushing the target piston rod in the process of hanging the target gear operation assembly to the target gear. The method can solve the problem of gear engaging faults caused by side turning of the piston block.

Description

Method for handling gear failure, vehicle and storage medium

Technical Field

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

Background

The existing speed changer is usually hydraulically driven by hydraulic oil, a piston rod in a piston is fixedly connected with a shifting fork in a shifting fork structure, so that hydraulic oil acts on piston blocks at two ends of the piston rod to drive the piston rod to horizontally move, and the shifting fork is driven to push a synchronizer gear sleeve to be meshed with or separated from a shifting gear so as to realize gear change of the speed changer.

In some transmissions, the piston rod abuts against piston blocks at both ends thereof. Since the end surface area of the piston rod is smaller than that of the piston block with which it is in contact, there are also cases where manufacturing tolerances and assembly tolerances are not appropriate in practical products. Then, when the rotation axis of the piston block is not coincident with the axis of the piston cavity to form a certain angle in the gear shifting process, the piston block pushed by the piston rod is pushed to rollover, so that the piston cannot be pushed to shift by applying oil pressure, further, the vehicle is in fault, and even the driving safety is affected in serious cases. For the problem that gear shift cannot be achieved due to rollover of the piston blocks, the existing method is to unpack the transmission, take out the rollover piston blocks and press the rollover piston blocks into new piston blocks according to technological requirements, and the method is time-consuming, labor-consuming and low in efficiency.

Disclosure of Invention

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

In order to achieve the above object, the present application provides a gear-shift failure processing method, which is applied to a gear-shift system of a vehicle, the gear-shift system includes a gear box and several sets of gear-shift operation components, each set of gear-shift operation components includes a piston rod, a fork fixedly connected with the piston rod, two piston blocks respectively abutting against two ends of the piston rod, and a hydraulic oil mechanism, the piston rod is movably installed in the gear box and is in transmission connection with a gear-shift device installed in the gear box; the hydraulic oil mechanism is used for applying pressure to push the piston block so as to drive the shifting fork on the piston rod to move, so that the shifting fork is matched with the speed changing device to switch gears. The gear failure processing method comprises the following steps: responding to a gear shift instruction of a target gear, controlling a target gear shift operation assembly corresponding to the target gear to execute corresponding gear shift operation, and judging whether the target gear shift operation assembly has gear shift faults or not; and if the target gear-shifting operation assembly is determined to have a gear-shifting fault, controlling the target hydraulic oil mechanism to alternately change the magnitude of the pressure applied by the target hydraulic oil mechanism to the first piston block, so that the first piston block pushes a target piston rod in the target gear-shifting operation assembly to repeatedly impact the second piston block, and the installation state of the second piston block is corrected to a normal state when the second piston block turns on one's side. The target hydraulic oil mechanism is in the target gear operation assembly, the first piston block and the second piston block are respectively abutted to two ends of the target piston rod, and the second piston block is used for pushing the target piston rod in the process of being hung to the target gear by the target gear operation assembly.

According to the gear-shifting fault processing method, when gear-shifting faults occur, the target hydraulic oil mechanism in the target gear-shifting operation assembly is controlled to alternately change the pressure applied to the first piston block, so that the non-rollover piston block pushes the target piston rod in the target gear-shifting operation assembly to repeatedly impact the rollover piston block, and the rollover piston block is gradually corrected to a normal state after being repeatedly impacted, and therefore the problem of gear-shifting faults caused by rollover of the piston block can be effectively solved without disassembling the gearbox, and the method is efficient and convenient and can improve safety of a vehicle.

Optionally, the hydraulic oil mechanism in each group of the gear-shifting operation assemblies comprises a first switch valve, a first cylinder body and a second cylinder body which are respectively positioned at two ends of the piston rod; the first piston block is movably arranged in the first cylinder body, the second piston block is movably arranged in the second cylinder body, the first switch valve is used for opening or closing a first oil path communicated to the first cylinder body, and hydraulic oil flows into the first cylinder body through the first oil path so as to apply pressure to the first piston block. The controlling the target hydraulic oil mechanism to alternately change the amount of pressure applied by the target hydraulic oil mechanism to the first piston block comprises: and controlling a first switching valve in the target gear shift operating assembly to be alternately opened or closed, so that the first oil passage is alternately opened or closed.

Optionally, the hydraulic oil mechanism in each group of the gear shifting operation components further comprises a second switch valve, a first proportional valve and a second proportional valve; the second switching valve is used for switching on or switching off a second oil way communicated to the second cylinder body, hydraulic oil flows into the second cylinder body through the second oil way so as to apply pressure to the second piston block, the first proportional valve is used for adjusting the flow of the hydraulic oil in the first oil way, and the second proportional valve is used for adjusting the flow of the hydraulic oil in the second oil way. The gear shift failure processing method further includes, before the first switching valve in the target gear shift operating assembly is controlled to be alternately opened or closed: controlling the first proportional valve and the second proportional valve to adjust to the maximum opening; and controlling the first switching valve and the second switching valve to be opened so that the first piston block and the second piston block are closely abutted against both ends of the target piston rod.

Optionally, the hydraulic oil mechanism in each group of the gear-shifting operation components comprises a first switch valve, a second switch valve, a first proportional valve, a second proportional valve, a first cylinder body and a second cylinder body which are respectively positioned at two ends of the piston rod; the first piston block is movably arranged in the first cylinder body, the second piston block is movably arranged in the second cylinder body, the first switch valve is used for opening or closing a first oil path communicated to the first cylinder body, the second switch valve is used for opening or closing a second oil path communicated to the second cylinder body, hydraulic oil flows into the first cylinder body through the first oil path so as to apply pressure to the first piston block, hydraulic oil flows into the second cylinder body through the second oil path so as to apply pressure to the second piston block, the first proportional valve is used for adjusting the flow of the hydraulic oil in the first oil path, and the second proportional valve is used for adjusting the flow of the hydraulic oil in the second oil path. The controlling the target hydraulic oil mechanism to alternately change the amount of pressure applied by the target hydraulic oil mechanism to the first piston block comprises: controlling the first switch valve and the second switch valve to be opened so that the first piston block and the second piston block are abutted against two ends of the target piston rod; and controlling the first proportional valve to alternately switch between a first opening degree and a second opening degree, wherein the first opening degree and the second opening degree are different.

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

Optionally, the method for handling the gear failure further comprises: and counting the times of alternately changing the magnitude of the pressure applied by the target hydraulic oil mechanism to the first piston block, and when the times reach the preset times, controlling the first switch valve and the second switch valve to be closed and controlling the first proportional valve and the second proportional valve to be regulated to the minimum opening.

Optionally, the gear shift transmission system comprises at least two sets of the gear shift operating components, a first clutch associated with a portion of the gear shift operating components, and a second clutch associated with the remaining portion of the gear shift operating components; when determining that the target gear-engaging operation component has a gear-engaging fault, the gear-engaging fault processing method further comprises the following steps: and controlling the clutch associated with the target shift operating assembly to be disengaged, controlling the shift operating assembly associated with the other clutch to be shifted to an adjacent gear of the target gear, and controlling the other clutch to be engaged.

Optionally, each set of the shift operating assemblies further includes a displacement sensor for detecting a shift fork position; the judging whether the target gear engaging operation component has gear engaging faults or not comprises the following steps: when the target gear shifting operation assembly executes corresponding gear shifting operation, detecting the position of the shifting fork through a displacement sensor, and judging whether the shifting fork moves to a target position corresponding to the target gear or not; if the shifting fork moves to the target position, determining that the gear is successfully engaged; if the shifting fork does not move to the target position, counting the times of executing the gear shifting operation, and judging whether the times of executing the gear shifting operation reach the preset times or not; if the number of times of executing the gear shifting operation does not reach the preset number of times, controlling the target gear shifting operation assembly to execute the gear shifting operation again, detecting the position of the shifting fork through the displacement sensor again, and judging whether the shifting fork moves to a target position corresponding to the target gear or not; and if the number of times of executing the gear shifting operation reaches the preset number of times, determining that the gear shifting fault occurs in the target gear shifting operation component.

The application also provides a vehicle comprising a gear shifting and shifting system, a memory and a controller. Wherein the memory is configured to store executable instructions. The controller is electrically connected with the memory and the gear shifting and speed changing system respectively, and the controller is used for executing executable instructions stored in the memory so as to realize the gear shifting and speed changing system gear shifting fault processing method.

The application also provides a computer readable storage medium, wherein the storage medium stores executable instructions, and when the executable instructions are executed by a processor, the method for processing the gear shift fault is realized.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

Fig. 1 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a first construction of a gearshift transmission system according to an embodiment of the application.

Fig. 3 is a schematic diagram of a second construction of a gearshift transmission system according to an embodiment of the application.

Fig. 4 is a flowchart of a first method for handling a gear failure according to an embodiment of the present application.

Fig. 5 is a flow chart of a second method for handling a gear failure according to an embodiment of the present application.

Fig. 6 is a detailed flow chart of step 623 of fig. 5.

Fig. 7 is a flowchart of a third method for handling a gear failure according to an embodiment of the present application.

The reference numerals are explained as follows:

Vehicle 10

Shift transmission system 100

Power source 200

Gearbox 210

First clutch 110

Second clutch 120

Cylinder 301, 302

Piston blocks 311, 312

Piston rod 320

Shifting fork 321

Switch valve 331, 332

Oil passages 351, 352

Proportional valve 341, 342

Transmission shaft 211

Driving shaft 212

Left side gear 11

Right side gear 22

Left gear 1

Right gear 2

Memory 400

Controller 300

Steps 610-620, 611-613, 621-626, 6231-6326

The following detailed description will illustrate the application with reference to the drawings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the vehicle 10 includes a shift transmission system 100 and a power source 200, wherein the shift transmission system 100 includes a first clutch 110, a second clutch 120, a transmission 210, and at least two sets of shift 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, and a driver can engage a desired gear through the transmission 210, the shift operating mechanism, and a synchronizer (not shown), or the vehicle 10 can automatically switch to a gear matching the vehicle speed according to the vehicle speed through the transmission 210, the shift operating mechanism, and the synchronizer (not shown). In this embodiment, the transmission 210 has a first gear set and a second gear set associated with the clutches, respectively, i.e., the first clutch 110 is engaged when the vehicle is operating in the first gear set and the second clutch 120 is engaged when the vehicle is operating in the second gear set. Of the at least two sets of shift operating assemblies, a portion is associated with the first clutch 110 and the remaining portion is associated with the second clutch 120. Preferably, a plurality of gear positions are alternately allocated to the first gear position group and the second gear position group. For example, the first gear set may include first, third, fifth, and seventh gears, and the second gear set may include second, fourth, sixth, and reverse gears. Further, the first gear and the third gear share a set of gear operating components, the fifth gear and the seventh gear share a set of gear operating components, the second gear and the fourth gear share a set of gear operating components, and the sixth gear and the reverse gear share a set of gear operating components. Wherein the power source 200 may be an automobile engine or an electric motor.

The structure and operation of a set of the shift operating assemblies and the gearbox 210 will now be described in detail with reference to fig. 2-3.

As shown in fig. 2, the gear-shifting operation assembly includes a piston rod 320, a shifting fork 321 fixedly connected to the piston rod 320, two piston blocks (a piston block 311 and a piston block 312) respectively abutting against two ends of the piston rod 320, and a hydraulic oil mechanism, wherein the piston rod 320 is movably installed in the gearbox 210 and is in transmission connection with a gear-shifting device installed in the gearbox 210. The hydraulic oil mechanism is used for pushing the piston block to drive the shifting fork 321 on the piston rod 320 to move, so that the shifting fork 321 is matched with the speed changing device to switch gear positions.

Further, the hydraulic oil mechanism in the gear shift operating assembly includes an on-off valve 331, an on-off valve 332, a proportional valve 341, a proportional valve 342, and a cylinder 301 and a cylinder 302 respectively located at two ends of the piston rod 320. Wherein the piston block 311 is movably installed in the cylinder 301, the piston block 312 is movably installed in the cylinder 302, and both ends of the piston rod 320 extend into the cylinder 301 and the cylinder 302, respectively. Hydraulic oil may flow into the cylinder 301 through the oil passage 351 to apply pressure to the piston block 311, and hydraulic oil may also flow into the cylinder 302 through the oil passage 352 to apply pressure to the piston block 312. The on-off valve 331 is used for opening or closing the oil passage 351, the on-off valve 332 is used for opening or closing the oil passage 352, the proportional valve 341 is used for adjusting the flow rate of the hydraulic oil in the oil passage 351, and the proportional valve 342 is used for adjusting the flow rate of the hydraulic oil in the oil passage 352, and it can be understood that the magnitude of the pressure exerted by the hydraulic oil is in positive correlation with the flow rate. In other embodiments, the on-off valve 331 and the on-off valve 332 may be integrated into one multiple-way valve, or the on-off valve 331 and the on-off valve 332 in the shift operating assembly in the same shift group may be integrated into one multiple-way valve, so that the structure can be simplified, the space can be saved, and the present invention is not limited herein. Optionally, the hydraulic oil mechanism in the shift operating assembly may further include a pressure valve for adjusting the pressure of the hydraulic oil.

Further, the transmission in the gearbox 210 includes a driving shaft 212 and a driving shaft 211 rotatably mounted in the gearbox 210, the driving shaft 212 and the driving shaft 211 are parallel to the piston rod 320, and the driving shaft 211 is located between the driving shaft 212 and the piston rod 320. The transmission shaft 211 is coaxially sleeved with a shifting fork gear in a sliding manner, the shifting fork gear can slide along the axial direction of the transmission shaft 211, and the transmission shaft 211 can rotate along with the rotation of the shifting fork gear. One end of the shifting fork 321 is fixedly connected with the piston rod 320, and the other end is engaged with a shifting fork gear on the transmission shaft 211, specifically, the shifting fork gear comprises a left gear 1 and a right gear 2. At least one gear wheel meshed with the shifting fork gear is coaxially and fixedly sleeved on the driving shaft 212, and specifically, the gear shift gear comprises a left gear wheel 11 and a right gear wheel 22.

Optionally, the shift operating assembly further includes a displacement sensor (not shown) for detecting the position of the shift fork 321. Taking the case that the left gear 11 corresponds to the first gear and the right gear 22 corresponds to the third gear as an example, when the left gear 1 is meshed with the left gear 11, the displacement sensor detects that the shift fork 321 moves to the first target position, which indicates that the shift fork is successfully engaged to the first gear; when the right gear 2 is engaged with the right side gear 22, the displacement sensor detects that the shift fork 321 is moved to the second target position, indicating that the third gear is successfully engaged.

Specifically, when receiving the command of engaging the first gear, the switch valve 332 is opened, i.e., the oil path 352 is opened, so that hydraulic oil flows into the cylinder 302 to push the piston block 312 to push the piston rod 320 to drive the fork 321 and the fork gear to move to the left, and when the left gear 1 is engaged with the left gear 11, the first gear is successfully engaged. When receiving the command of engaging to third gear, the switch valve 331 is opened, that is, the oil path 351 is opened, so that hydraulic oil flows into the cylinder 301 to push the piston block 311 to push the piston rod 320 to drive the fork 321 and the fork gear to move to the right, and when the right gear 2 is engaged with the right gear 22, the engagement to third gear is realized.

However, since the end surface area of the piston rod 320 is smaller than the end surface areas of the piston block 311 and the piston block 312 in contact therewith, there are also cases where manufacturing tolerances and assembly tolerances are not appropriate in the actual product. Then, when the rotational axes of the piston block 311 and the piston block 312 do not coincide with the axes of the cylinder 301 and the cylinder 302 by a certain angle during the gear shift, it is possible to cause the piston block pushed by the piston rod 320 to be pushed to rollover. As shown in FIG. 3, during the third gear, the piston block 312 is pushed to rollover by the piston rod 320. In this case, when the first gear is needed to be engaged again, because the piston block 312 is turned over and leaked, hydraulic oil cannot be applied to the piston block 312 by hydraulic oil to push the piston block 312, so that the first gear cannot be engaged, and the vehicle 10 is failed, and in severe cases, the driving safety is even affected. In addition, for the problem that the gear cannot be engaged due to the rollover of the piston block, the existing method is to unpack the gearbox 210, take out the rollover piston block and press the rollover piston block into a new piston block according to the technological requirement, and the method is time-consuming, labor-consuming and low in efficiency.

Referring to fig. 4, in order to solve the problem of gear engagement failure caused by rollover of a piston block, the application provides a gear engagement failure processing method, which specifically includes the following steps:

in step 610, in response to a gear shift instruction of a target gear, a target gear shift operation component corresponding to the target gear is controlled to execute a corresponding gear shift operation, and whether the target gear shift operation component has a gear shift fault is determined. If it is determined whether the target shift operating component has a shift failure, step 620 is performed. Otherwise, the flow ends. For easy understanding, the embodiment of the present application will be described taking the target gear as the first gear and the gear shift operating assembly shown in fig. 3 as the target gear shift operating assembly as an example. The target shift operating assembly performs a corresponding shift operation including opening the switching valve 332 and adjusting the opening degree of the proportional valve 342, wherein the larger the opening degree of the proportional valve is, the larger the flow rate of the hydraulic oil is.

In step 620, the control target hydraulic oil mechanism alternately changes the amount of pressure applied to the first piston block, so that the first piston block pushes the target piston rod 320 in the target 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 (an upright state as shown in fig. 2, i.e., to make the rotation axis of the piston block 312 parallel to the axis of the cylinder 302) when the second piston block is turned upside down. It should be noted that, in the embodiment of the present application, 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 two ends of the target piston rod 320, and the second piston block is a piston block for pushing the target piston rod 320 in the process of the target gear shift operating assembly being shifted to the target gear shift position. As shown in fig. 3, in this embodiment, the target gear is a first gear, and then the first piston block is a piston block 311, and the second piston block is a piston block 312. In other embodiments, when the target gear is third gear, the second piston block is piston block 311 and the first piston block is piston block 312. After the piston block 312 turns over, the pressure of the hydraulic oil to the piston block 311 is alternately changed, so as to drive the piston rod 320 to alternately change the contact force of the piston rod 320 to the piston block 312, so that the piston block 311 pushes the piston rod 320 to repeatedly impact the piston block 312, and the installation state of the piston block 312 can be gradually corrected to a normal state, and the problem of gear engagement failure caused by the turning over of the piston block can be solved. It can be appreciated that the greater the rollover angle of the piston block, the greater the difficulty of correction. According to the test result, in an extreme case, after the piston block turns over 45 degrees, the shift fault processing method provided by the application can also successfully correct the turning-over piston to a normal state, so that the shift speed change system 100 is recovered to be normal.

In practical application, if the piston block is found to be turned over before the gearbox is loaded, the piston block can be corrected to a normal state by only placing the gearbox into a gearbox assembly test bench and running the gear failure processing method provided by the application through program control. If the piston block is found to be turned over after the gearbox is loaded, a technician can correct the piston block to a normal state only by enabling the diagnosis equipment to be connected into a whole vehicle control network through a vehicle-mounted automatic diagnosis system (On Board Diagnostics, OBD) and executing the gear-shifting fault processing method. In addition, engineers can also update the software program through an over-the-air technology (Over The Air technology, OTA) to move the gear failure processing method into the vehicle, and the hardware equipment in the vehicle is not required to be changed, so that the method is convenient and quick.

According to the gear-shifting fault processing method, when gear-shifting faults occur, the target hydraulic oil mechanism in the target gear-shifting operation assembly is controlled to alternately change 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-shifting operation assembly to repeatedly impact the rollover piston block, and the rollover piston block is gradually corrected to a normal state after being repeatedly impacted, and therefore the problem of gear-shifting faults caused by rollover of the piston block can be effectively solved without disassembling the gearbox, the method is efficient and convenient, and safety of a vehicle can be improved.

Referring to fig. 5, fig. 5 is a flowchart of a second method for handling a gear failure according to an embodiment of the present application, wherein steps 611 to 613 in fig. 5 are refinement flows of step 610 in fig. 4, and steps 621 to 624 are refinement flows of step 620 in fig. 4, and specifically, the method for handling a gear failure includes the following steps:

In step 611, in response to the gear shift instruction of the target gear, the target gear shift operation component corresponding to the target gear is controlled to execute the corresponding gear shift operation.

Step 612, detecting the position of the shifting fork 321 by a displacement sensor, and judging whether the shifting fork 321 moves to a target position corresponding to the target gear. If the shift fork 321 moves to the target position (corresponding to the first target position), it is determined that the gear is successfully engaged, and the process ends. If the fork 321 is not moved to the target position, step 613 is performed.

Step 613, counting the number of times of executing the gear shift operation, and judging whether the number of times of executing the gear shift operation reaches a first preset number of times. If the number of times of executing the gear shift operation does not reach the first preset number of times, returning to step 611, and controlling the target gear shift operation component to execute the gear shift operation again. If the number of times of executing the gear shift operation reaches the first preset number of times, determining that the target gear shift operation component has a gear shift fault, and executing step 621 and step 624. It will be appreciated that the target gear may not be engaged after a number of gear steps, and there may be a problem with the piston block tipping over.

And step 621, controlling the first proportional valve and the second proportional valve to be adjusted to the maximum opening degree. In the embodiment of the present application, the cylinder in which the first piston block is located is referred to as a first cylinder (corresponding to the cylinder 301), the oil path that communicates with the first cylinder is referred to as a first oil path (corresponding to the oil path 351), the on-off valve and the proportional valve in the first oil path are respectively referred to as a first on-off valve (corresponding to the on-off valve 331) and a first proportional valve (corresponding to the proportional valve 341), the cylinder in which the second piston block is located is referred to as a second cylinder (corresponding to the cylinder 302), the oil path that communicates with the second cylinder is referred to as a second oil path (corresponding to the oil path 352), and the on-off valve and the proportional valve in the second oil path are respectively referred to as a second on-off valve (corresponding to the on-off valve 332) and a second proportional valve (corresponding to the proportional valve 342).

Step 622, controlling the first switch valve and the second switch valve to be opened so that the first piston block and the second piston block are abutted against two ends of the target piston rod. Preferably, the first switching valve and the second switching valve are simultaneously opened.

Step 623, controlling a first on-off valve in the target shift operating assembly to alternately open or close, thereby alternately opening or closing the first oil passage. It will be appreciated that before the correction operation (i.e., step 623) is performed, the proportional valve 341 and the proportional valve 342 are adjusted to the maximum opening degree, and the on-off valve 331 and the on-off valve 332 are simultaneously opened, so that the piston block 311 and the piston block 312 can be abutted against both ends of the piston rod 320 as closely as possible. Since the opening degree of the proportional valve 341 and the proportional valve 342 is maximized when the correction operation is performed, the piston rod 320 can be repeatedly and strongly impacted against the piston block 312 when the control switch valve 331 is alternately opened or closed, and the correction effect is improved.

Preferably, when step 623 is performed, 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 switching valve in the target shift operating member is controlled to be alternately opened or closed) is counted, and when the number of times reaches a second preset number of times, both the first switching valve and the second switching valve are controlled to be closed, and both the first proportional valve and the second proportional valve are controlled to be adjusted to minimum opening degrees. It will be appreciated that if the gear failure is caused by another failure, i.e., a cause other than a piston block rollover, then performing a corrective action may not eliminate the failure. Therefore, setting the upper limit on the number of times the first switching valve in the target shift operating assembly is controlled to be alternately opened or closed can avoid endless execution of the corrective operation due to shift failure caused by other failure, enabling energy saving.

Step 624, controlling disengagement of a clutch associated with the target shift operating assembly, controlling engagement of a shift operating assembly associated with another clutch to an adjacent shift position to the target shift position, and controlling engagement of the other clutch. It will be appreciated that when a gear-up fault exists in the target gear (e.g., first gear), disengaging the clutch associated with the faulty gear (e.g., clutch 110), engaging the gear-up operating assembly in another gear set to an adjacent gear (e.g., second gear) in the target gear, and engaging another clutch (e.g., clutch 120) may ensure that the power source 200 is able to continue to power the vehicle 10 without causing the vehicle 10 to stall, thus improving driving safety.

Referring to fig. 6, fig. 6 is a detailed flowchart of step 623 in fig. 5, specifically, the control of the first on-off valve in the target shift operating component to be alternately opened or closed includes the following steps:

In step 6231, the first on-off valve is controlled to be closed for a first preset period of time.

In step 6232, the first on-off valve is controlled to be opened for a second preset period of time. The selected values of the first preset duration and the second preset duration may be obtained through experiments, which are not limited herein.

In step 6233, the position of the shift fork 321 is detected by the displacement sensor, and whether the shift fork 321 moves to the target position corresponding to the target gear is determined. If the shift fork 321 has moved to the target position corresponding to the target gear, it is determined that the gear failure has been repaired, and step 6235 is performed. Otherwise, step 6234 is performed. It should be noted that, since the proportional valve 341 and the proportional valve 342 are adjusted to the maximum opening degree before the correction operation is performed, if the piston block 312 is corrected during the correction process, then the piston block 312 receives the pressure of the hydraulic oil and pushes the piston rod 320 and the fork 321621 to the left during the closing of the switch valve 331 until the fork 321 moves to the target position (corresponding to the first target position) corresponding to the target gear, at this time, it is indicated that the target gear shift operation assembly has been engaged in the target gear, and the gear shift failure has been repaired. Conversely, if the piston block 312 has not been corrected during the execution of the correction, the shift fork 321 will not be able to move to the target position corresponding to the target gear. Optionally, when it is determined that the gear failure has been repaired, the gear failure processing method may further include: an indication signal is output to prompt the user that the gear failure has been repaired.

Step 6234, counting the number of times of closing the first switching valve, and determining whether the number of times of closing the first switching valve reaches a second preset number of times. If it is determined that the number of times the first switching valve is closed reaches the second preset number of times, step 6236 is performed, otherwise, step 6231 is returned to, and the first switching valve is controlled to be closed again for the first preset duration.

In step 6235, control of the target shift operating assembly exits the gear. It should be noted that, because the target gear shift operating component is still in the target gear shift position after the gear shift fault is repaired, the target gear shift operating component is controlled to exit the gear shift position, so that gear shift collision or vehicle gear shift start can be prevented.

In step 6236, the first switching valve and the second switching valve are controlled to be closed, and the first proportional valve and the second proportional valve are controlled to be adjusted to minimum opening. Therefore, the hydraulic oil mechanism in the target gear-shifting operation assembly is restored to the minimum energy consumption state, and energy can be further saved.

Referring to fig. 7, fig. 7 is a flowchart of a third method for handling a gear shift failure according to an embodiment of the present application, where the method specifically includes the following steps:

In step 611, in response to the gear shift instruction of the target gear, the target gear shift operation component corresponding to the target gear is controlled to execute the corresponding gear shift operation.

Step 612, detecting the position of the shifting fork 321 by a displacement sensor, and judging whether the shifting fork 321 moves to a target position corresponding to the target gear. If the shift fork 321 moves to the target position (corresponding to the first target position), it is determined that the gear is successfully engaged, and the process ends. If the fork 321 is not moved to the target position, step 613 is performed.

Step 613, counting the number of times of executing the gear shift operation, and judging whether the number of times of executing the gear shift operation reaches a first preset number of times. If the number of times of executing the gear shift operation does not reach the first preset number of times, returning to step 611, and controlling the target gear shift operation component to execute the gear shift operation again. If the number of times of executing the gear shift operation reaches the first preset number of times, determining that the target gear shift operation component has a gear shift fault, and executing step 624 and step 625.

Step 624, controlling disengagement of a clutch associated with the target shift operating assembly, controlling engagement of a shift operating assembly associated with another clutch to an adjacent shift position to the target shift position, and controlling engagement of the other clutch.

And step 625, controlling the first switch valve and the second switch valve to be opened so that the first piston block and the second piston block are abutted against two ends of the target piston rod. Preferably, step 625 further comprises: and before the first switching valve and the second switching valve are controlled to be opened, controlling the first proportional valve and the second proportional valve to be regulated to the maximum opening degree. In this way, before the correction operation (i.e., step 626) is performed, the piston block 311 and the piston block 312 can be made to abut against both ends of the piston rod 320 as closely as possible.

Step 626, controlling the first proportional valve to alternately switch between a first opening degree and a second opening degree, wherein the first opening degree and the second opening degree are different.

The embodiment shown in fig. 7 is similar to the embodiment shown in fig. 5, except that: the embodiment shown in fig. 5 is to implement the repeated impact of the piston rod 320 on the second piston block by controlling the first switching valve to be opened or closed alternately, whereas the embodiment shown in fig. 7 is to implement the repeated impact of the piston rod 320 on the second piston block by controlling the first proportional valve to be switched alternately between the first opening degree and the second opening degree, and the principle of both methods is similar. It will be appreciated that the greater the difference between the first opening and the second opening, the greater the impact force of the piston rod 320 on the second piston block, and therefore, preferably, the first opening is the maximum opening and the second opening is the minimum opening.

Referring again to FIG. 1, and based on the same inventive concepts, the present application also provides a vehicle 10, the vehicle 10 including a shift transmission system 100, a power source 200, a memory 400, and a controller 300.

Wherein the power source 200 is in driving connection with the gearshift transmission system 100, and the gearshift transmission system 100 is in driving connection with the wheels of the vehicle 10. The power source 200 is used for outputting power to drive the vehicle 10 to run, and the gear shifting and shifting system 100 is used for performing speed regulation and gear shifting operations on the vehicle 10.

The memory 400 is used to store executable instructions. The controller 300 is electrically connected to the memory 400 and the gear shift system 100, respectively, and the controller 300 is configured to execute executable instructions stored in the memory 400 to implement the gear shift fault handling method in the gear shift system 100.

Based on the same inventive concept, the application further provides a computer readable storage medium, wherein the computer readable storage medium stores executable instructions, and the executable instructions realize the gear shift fault processing method when being executed by a processor.

The computer storage media of embodiments of the application may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

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.

Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the C-language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The gear-shifting fault processing method is applied to a gear-shifting speed-changing system of a vehicle, and comprises a speed-changing box and a plurality of groups of gear-shifting operation components, wherein each group of gear-shifting operation components comprises a piston rod, a shifting fork fixedly connected with the piston rod, two piston blocks respectively abutted against two ends of the piston rod, and a hydraulic oil mechanism, and the piston rod is movably arranged in the speed-changing box and is in transmission connection with a speed-changing device arranged in the speed-changing box; the hydraulic oil mechanism is used for applying pressure to push the piston block to drive a shifting fork on the piston rod to move, so that the shifting fork is matched with the speed changing device to switch gears; the method is characterized by comprising the following steps of:

responding to a gear shift instruction of a target gear, controlling a target gear shift operation assembly corresponding to the target gear to execute corresponding gear shift operation, and judging whether the target gear shift operation assembly has gear shift faults or not; and

If the target gear-shifting operation assembly is determined to have gear-shifting faults, the target hydraulic oil mechanism is controlled to alternately change the pressure applied by the target hydraulic oil mechanism to the first piston block, so that the first piston block pushes a target piston rod in the target gear-shifting operation assembly to repeatedly impact a second piston block, and the installation state of the second piston block is corrected to be a normal state when the second piston block turns over; the target hydraulic oil mechanism is in the target gear operation assembly, the first piston block and the second piston block are respectively abutted to two ends of the target piston rod, and the second piston block is used for pushing the target piston rod in the process of being hung to the target gear by the target gear operation assembly.

2. The method of claim 1, wherein the hydraulic oil mechanism in each set of the gear-shift operation assemblies comprises a first switch valve, a first cylinder and a second cylinder respectively positioned at two ends of the piston rod; the first piston block is movably installed in the first cylinder body, the second piston block is movably installed in the second cylinder body, and the first switch valve is used for opening or closing a first oil path communicated with the first cylinder body, and hydraulic oil flows into the first cylinder body through the first oil path so as to apply pressure to the first piston block;

the controlling the target hydraulic oil mechanism to alternately change the amount of pressure applied by the target hydraulic oil mechanism to the first piston block comprises:

and controlling a first switching valve in the target gear shift operating assembly to be alternately opened or closed, so that the first oil passage is alternately opened or closed.

3. The method of claim 2, wherein the hydraulic oil mechanism in each set of shift operating assemblies further comprises a second on-off valve, a first proportional valve, a second proportional valve; the second switching valve is used for opening or closing a second oil path communicated with the second cylinder body, hydraulic oil flows into the second cylinder body through the second oil path so as to apply pressure to the second piston block, the first proportional valve is used for adjusting the flow rate of the hydraulic oil in the first oil path, and the second proportional valve is used for adjusting the flow rate of the hydraulic oil in the second oil path;

The gear shift failure processing method further includes, before the first switching valve in the target gear shift operating assembly is controlled to be alternately opened or closed:

controlling the first proportional valve and the second proportional valve to adjust to the maximum opening;

and controlling the first switching valve and the second switching valve to be opened so that the first piston block and the second piston block are closely abutted against two ends of the target piston rod.

4. The method of claim 1, wherein the hydraulic oil mechanism in each set of the gear shift operating components comprises a first switch valve, a second switch valve, a first proportional valve, a second proportional valve, and a first cylinder and a second cylinder respectively positioned at two ends of the piston rod; the first piston block is movably arranged in the first cylinder body, the second piston block is movably arranged in the second cylinder body, the first switch valve is used for opening or closing a first oil path communicated with the first cylinder body, the second switch valve is used for opening or closing a second oil path communicated with the second cylinder body, hydraulic oil flows into the first cylinder body through the first oil path so as to apply pressure to the first piston block, hydraulic oil flows into the second cylinder body through the second oil path so as to apply pressure to the second piston block, the first proportional valve is used for adjusting the flow rate of the hydraulic oil in the first oil path, and the second proportional valve is used for adjusting the flow rate of the hydraulic oil in the second oil path;

the controlling the target hydraulic oil mechanism to alternately change the amount of pressure applied by the target hydraulic oil mechanism to the first piston block comprises:

Controlling the first switch valve and the second switch valve to be opened so that the first piston block and the second piston block are abutted against two ends of the target piston rod;

The first proportional valve is controlled to alternately switch 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 shift failure according to claim 4, wherein the first opening degree is a maximum opening degree and the second opening degree is a minimum opening degree.

6. The method for handling a gear shift failure according to claim 3, wherein the method for handling a gear shift failure further comprises:

And counting the times of alternately changing the magnitude of the pressure applied by the target hydraulic oil mechanism to the first piston block, and when the times reach the preset times, controlling the first switch valve and the second switch valve to be closed and controlling the first proportional valve and the second proportional valve to be regulated to the minimum opening.

7. The method of any one of claims 1to 6, wherein the shift transmission system includes at least two sets of the shift operating assemblies, a first clutch associated with a portion of the shift operating assemblies, and a second clutch associated with the remaining portion of the shift operating assemblies;

when determining that the target gear-engaging operation component has a gear-engaging fault, the gear-engaging fault processing method further comprises the following steps:

the method includes controlling a clutch associated with the target shift operating assembly to disengage, controlling a shift operating assembly associated with another clutch to shift to an adjacent gear to the target gear, and controlling the other clutch to engage.

8. The method of claim 1, wherein each set of shift operating assemblies further comprises a displacement sensor for detecting a shift fork position; the judging whether the target gear engaging operation component has gear engaging faults or not comprises the following steps:

When the target gear shifting operation assembly executes corresponding gear shifting operation, detecting the position of the shifting fork through the displacement sensor, and judging whether the shifting fork moves to a target position corresponding to the target gear or not;

If the shifting fork moves to the target position, determining that the gear is successfully engaged;

If the shifting fork does not move to the target position, counting the number of times of executing the gear shifting operation, and judging whether the number of times of executing the gear shifting operation reaches a preset number of times or not;

If the number of times of executing the gear shifting operation does not reach the preset number of times, controlling the target gear shifting operation assembly to execute the gear shifting operation again, detecting the position of the shifting fork through the displacement sensor again, and judging whether the shifting fork moves to a target position corresponding to the target gear or not; and

And if the number of times of executing the gear shifting operation reaches the preset number of times, determining that the target gear shifting operation component has a gear shifting fault.

9. A vehicle, characterized by comprising:

A shift transmission system;

A memory for storing executable instructions; and

A controller electrically connected to the memory and the shift transmission system, respectively, the controller being configured to execute executable instructions stored in the memory to implement the gear shift failure processing method according to any one of claims 1 to 8 in the shift transmission system.

10. A computer readable storage medium, characterized in that executable instructions are stored, which when executed by a processor, implement the method of handling a gear failure according to any of claims 1 to 8.