Shift actuator solenoid valve control timing calibration method and related equipment

Abstract

The present application provides a method and related equipment for calibrating the control timing of the solenoid valves of a shift actuator. The method comprises: determining that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve if the first time required for the first solenoid valve corresponding to the first cylinder to send an activation signal until the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum, and that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve if the first time is less than the second time; and determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve if the first time is equal to the second time. By adjusting the activation time of the first solenoid valve or the second solenoid valve, the shift force values ​​corresponding to the first cylinder and the second cylinder are equal, allowing the AMT to quickly and accurately shift into neutral.

Description

Technical Field

[0001] The present application relates to the field of vehicles, and in particular to a method for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator and related equipment. Background Art

[0002] An automated mechanical transmission (AMT) is a stepped mechanical automatic transmission that integrates an electronic control system with a traditional dry clutch and manual gear transmission, transforming the manual shift mechanism into an automatic one. This automatic transmission offers automated shifting. With its simple structure, high transmission efficiency, and low manufacturing and maintenance costs, AMTs hold broad development prospects in the commercial vehicle sector.

[0003] Different transmission bodies, when matched with different clutches and at different oil temperatures, have greatly different AMT disengagement forces (return to neutral). In addition, due to the different cylinder diameters on both sides of the shift actuator, if the control timing of the solenoid valves corresponding to the cylinders is unreasonable, the actual disengagement force generated by the shift actuator will be too large or too small, resulting in overshoot of the AMT return to neutral position, and the AMT cannot quickly shift into neutral, which ultimately prolongs the shift time and sometimes even causes shift failure or loss of control of the entire vehicle.

[0004] Therefore, reasonable calibration of the solenoid valve control timing can accurately control the dynamic shifting force of the actuator and ultimately ensure that the AMT can quickly and accurately shift into neutral. Summary of the Invention

[0005] The present application provides a method and related equipment for calibrating the control timing of the solenoid valve of a gear selection and shifting actuator, so that the AMT can be quickly and accurately shifted into neutral.

[0006] In a first aspect, the present application provides a method for calibrating a control timing sequence of a solenoid valve of a gear selection and shifting actuator, the method comprising:

[0007] calculating a first time required for a first solenoid valve corresponding to a first cylinder on one side of a shift selector actuator to issue an activation signal until a shift selector force value corresponding to the first cylinder and a shift selector force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum; wherein the shift selector force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift selector force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0008] calculating a second time required from the second solenoid valve corresponding to the second cylinder sending an activation signal to the time when the shift selection force value corresponding to the second cylinder and the shift selection force value corresponding to the first cylinder are equal and maximum;

[0009] When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time;

[0010] When the first time is less than the second time, determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time;

[0011] When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0012] Optionally, the calculating of the first time required for a first solenoid valve corresponding to a first cylinder on one side of the shift selector actuator to send an activation signal until a shift force value corresponding to the first cylinder and a shift force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum specifically includes:

[0013] acquiring the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at preset time intervals after the first solenoid valve sends an activation signal, calculating the shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and calculating the shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0014] Determining the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum according to the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval;

[0015] The first time required for the first solenoid valve to send out the activation signal and the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum is calculated based on the time when the first solenoid valve sends out the activation signal and the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum.

[0016] Optionally, calculating the second time required from the second solenoid valve corresponding to the second cylinder sending an activation signal to the time when the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum specifically includes:

[0017] acquiring the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at preset time intervals after the second solenoid valve sends an activation signal, calculating a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and calculating a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0018] determining, based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval, a time when the shift selection force value corresponding to the second cylinder is equal to and maximum to the shift selection force value corresponding to the first cylinder;

[0019] According to the time when the second solenoid valve sends an activation signal and the time when the gear selection and shift force value corresponding to the second cylinder is equal to and the gear selection and shift force value corresponding to the first cylinder is equal and maximum, the second time required from the time when the solenoid valve corresponding to the second cylinder sends an activation signal to the time when the gear selection and shift force value corresponding to the second cylinder is equal to and the gear selection and shift force value corresponding to the first cylinder is equal and maximum is calculated.

[0020] In a second aspect, the present application provides a system for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator, the system comprising:

[0021] Automatic transmission, gear selection and shifting actuator, first air pressure transmitter, second air pressure transmitter, air pressure monitoring lower computer, transmission control unit, data collector and computer equipment;

[0022] The gear selection and shifting actuator is installed on the automatic transmission and is used for performing gear shifting operations;

[0023] The first air pressure transmitter is connected to the first air cylinder on one side of the gear selection and shifting actuator and the air pressure monitoring slave computer, and is used to send the cylinder air pressure of the first cylinder to the air pressure monitoring slave computer;

[0024] The second air pressure transmitter is connected to the second air cylinder on the other side of the gear selection and shifting actuator and the air pressure monitoring slave computer, and is used to send the cylinder air pressure of the second cylinder to the air pressure monitoring slave computer;

[0025] The air pressure monitoring slave computer is connected to the acquisition instrument and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder to the acquisition instrument;

[0026] The transmission control unit is connected to a first solenoid valve corresponding to the first cylinder and a second solenoid valve corresponding to the second cylinder, and is used to send the activation time of the first solenoid valve and the activation time of the second solenoid valve to the data collector;

[0027] The data collector is connected to the computer device and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device;

[0028] The computer device is configured to calculate a first time required from the issuance of an activation signal by the first solenoid valve to the time when the shift select force value corresponding to the first cylinder and the shift select force value corresponding to the second cylinder are equal and maximum; wherein the shift select force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift select force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0029] calculating a second time required for the second solenoid valve to send an activation signal until the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum;

[0030] When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time;

[0031] When the first time is less than the second time, determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time;

[0032] When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0033] Optionally, the first air pressure transmitter sends the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer at a preset time interval after the first solenoid valve sends an activation signal;

[0034] The second air pressure transmitter sends the air pressure in the second cylinder to the air pressure monitoring slave computer at a preset time interval after the first solenoid valve sends an activation signal;

[0035] The air pressure monitoring slave computer sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector;

[0036] The data collector is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device;

[0037] The computer device is configured to calculate a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder at each preset time interval, calculate a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder at each preset time interval, and determine a time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval;

[0038] The first time required from the time when the first solenoid valve sends the activation signal to the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum is calculated based on the time when the first solenoid valve sends the activation signal and the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum.

[0039] Optionally, the first air pressure transmitter sends the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer at a preset time interval after the second solenoid valve sends an activation signal;

[0040] The second air pressure transmitter sends the air pressure in the second cylinder to the air pressure monitoring slave computer at a preset time interval after the second solenoid valve sends an activation signal;

[0041] The air pressure monitoring slave computer sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector;

[0042] The data collector is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device;

[0043] The computer device is configured to calculate a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder at each preset time interval, calculate a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder at each preset time interval, and determine a time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval;

[0044] According to the time when the second solenoid valve sends the activation signal and the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum, the second time required from the time when the second solenoid valve sends the activation signal to the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum is calculated.

[0045] Optionally, the collector is a CAN collector.

[0046] Optionally, the first air pressure transmitter is connected to the air pressure monitoring slave computer through a wiring harness, the second air pressure transmitter is connected to the air pressure monitoring slave computer through a wiring harness, the air pressure monitoring slave computer is connected to the collector through a wiring harness, the transmission control unit is connected to the first solenoid valve, the second solenoid valve and the collector through a wiring harness, and the collector is connected to the computer device through a data cable.

[0047] In a third aspect, the present application provides a device for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator, comprising:

[0048] a first calculation module, configured to calculate a first time required from the time a first solenoid valve corresponding to a first cylinder on one side of a shift selector actuator sends an activation signal to the time when a shift selector force value corresponding to the first cylinder and a shift selector force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum; wherein the shift selector force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift selector force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0049] a second calculation module, configured to calculate a second time required from the second solenoid valve corresponding to the second cylinder sending an activation signal to the time when the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum;

[0050] A determination module is used to determine that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time, when the first time is less than the second time; and to determine that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time, when the first time is equal to the second time. When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0051] In a fourth aspect, the present application provides an electronic device, comprising: a memory and a processor;

[0052] The memory is used to store instructions; the processor is used to call the instructions in the memory to execute the first aspect and any possible design of the first aspect in the method for calibrating the control timing of the solenoid valve of the gear selection and shifting actuator.

[0053] In a fifth aspect, the present application provides a vehicle, comprising the gear selection and shifting actuator solenoid valve control timing calibration system in the second aspect and any possible design of the second aspect.

[0054] In a sixth aspect, the present application provides a computer-readable storage medium, in which computer instructions are stored. When at least one processor of an electronic device executes the computer instructions, the electronic device executes the method for calibrating the control timing of the solenoid valve of the gear selection and shifting actuator in the first aspect and any possible design of the first aspect.

[0055] In the seventh aspect, the present application provides a computer program product, which includes computer instructions. When at least one processor of an electronic device executes the computer instructions, the electronic device executes the method for calibrating the control timing of the solenoid valve of the gear selection and shifting actuator in the first aspect and any possible design of the first aspect.

[0056] The present application provides a method for calibrating the control timing of the solenoid valve of the gear selection and shift actuator, which calculates the first time required for the first solenoid valve corresponding to the first cylinder on one side of the gear selection and shift actuator to send an activation signal until the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder on the other side of the gear selection and shift actuator are equal and maximum, and calculates the second time required for the second solenoid valve corresponding to the second cylinder to send an activation signal until the gear selection and shift force value corresponding to the second cylinder and the gear selection and shift force value corresponding to the first cylinder are equal and maximum. When the first time is greater than the second time, the activation time of the first solenoid valve is determined to be earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time, so that the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal. When the first time is less than the second time, the activation time of the second solenoid valve is determined to be earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time, so that the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal. When the first time is equal to the second time, the activation time of the first solenoid valve and the activation time of the second solenoid valve are determined to be the same, and the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal. Therefore, by adjusting the activation time of the first solenoid valve or the second solenoid valve, the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder can be made equal, thereby reducing the overshoot of the AMT return to neutral position and allowing the AMT to quickly and accurately shift into neutral. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0058] Figure 1 A flow chart of a method for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator according to an embodiment of the present application;

[0059] Figure 2 A schematic diagram of a timing calibration system for a solenoid valve control system for a gear selection and shifting actuator according to an embodiment of the present application;

[0060] Figure 3 A schematic diagram of the structure of a solenoid valve control timing calibration device for a gear selection and shifting actuator according to an embodiment of the present application;

[0061] Figure 4 A schematic diagram of the hardware structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0063] As described in the background technology, the AMT's disengagement force (return to neutral) varies greatly when different gearbox bodies are matched with different clutches and at different oil temperatures. In addition, since the cylinder diameters on both sides of the shift actuator are different, if the control timing of the solenoid valves corresponding to the cylinders is unreasonable, the actual disengagement force generated by the shift actuator will be too large or too small, resulting in overshoot of the AMT's return to neutral position, and the AMT will be unable to quickly shift into neutral, which will ultimately extend the shift time and sometimes even cause shift failure or loss of control of the entire vehicle.

[0064] The current calibration method analyzes calibration parameters based on actual position changes and vehicle performance after calibration. This method cannot accurately and dynamically analyze the air pressure at both ends of the cylinder and the shift force. The lack of precise feedback input during the calibration process affects the accuracy of the calibration of the solenoid valve control timing of the shift actuator.

[0065] To address the above-mentioned issues, the present application proposes a method for calibrating the control timing of the solenoid valves of a shift actuator. The method calculates a first time required for a first solenoid valve corresponding to a first cylinder to send an activation signal until the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum, and a second time required for a second solenoid valve corresponding to a second cylinder to send an activation signal until the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum. If the first time is greater than the second time, the activation time of the first solenoid valve is determined to be earlier than the activation time of the second solenoid valve; if the first time is less than the second time, the activation time of the second solenoid valve is determined to be earlier than the activation time of the first solenoid valve; and if the first time is equal to the second time, the activation time of the first solenoid valve and the activation time of the second solenoid valve are determined to be the same. In this way, the activation time of the first solenoid valve or the second solenoid valve can be adjusted according to the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder, so that the shift force values ​​corresponding to the first cylinder and the second cylinder are equal, thereby meeting the requirements for the AMT to quickly and accurately shift into neutral under different transmission bodies, different clutches, and different oil temperatures, thereby forming a closed-loop calibration.

[0066] The following specific embodiments are used to describe the technical solution of the present application in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0067] Figure 1 FIG1 shows a flow chart of a method for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator provided by an embodiment of the present application. Figure 1 As shown, the method of this embodiment may include the following steps:

[0068] S101. Calculate a first time required for a first solenoid valve corresponding to a first cylinder on one side of a shift selector actuator to send an activation signal until a shift force value corresponding to the first cylinder and a shift force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum.

[0069] In this embodiment, the shift actuator is flanked by a first and second cylinder. Under the action of air pressure, these cylinders, via pistons, drive the range shift fork shaft to shift between low and high gears. The shift force corresponding to the first cylinder is calculated based on the air pressure within the first cylinder and the area of ​​the piston within the first cylinder. The shift force corresponding to the second cylinder is calculated based on the air pressure within the second cylinder and the area of ​​the piston within the second cylinder.

[0070] Specifically, the time when the first solenoid valve corresponding to the first cylinder on one side of the shift actuator sends an activation signal is time one, and the time when the shift force value corresponding to the first cylinder on one side of the shift actuator is equal to the shift force value corresponding to the second cylinder on the other side of the shift actuator, and the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are at their maximum, is time two. The difference between time two and time one is the first time required for the first solenoid valve corresponding to the first cylinder to send an activation signal until the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder on the other side of the shift actuator are equal and at their maximum. It should be noted that the moment when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and at their maximum is the final state, at which point the AMT can be shifted into neutral.

[0071] In some embodiments, the first solenoid valve can be controlled to issue an activation signal, and the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder can be obtained at preset time intervals starting from the issuance of the activation signal by the first solenoid valve. A shift select force value corresponding to the first cylinder for each preset time interval is then calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder. A shift select force value corresponding to the second cylinder for each preset time interval is then calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder. Specifically, the product of the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder is the shift select force value corresponding to the first cylinder, and the product of the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder is the shift select force value corresponding to the second cylinder. Subsequently, based on the in-cylinder air pressure values ​​of the first cylinder and the in-cylinder piston area of ​​the second cylinder for each preset time interval, the time at which the shift select force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum is determined. Finally, based on the time when the first solenoid valve corresponding to the first cylinder sends an activation signal and the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum, the first time required for the first solenoid valve to send the activation information to the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum is calculated.

[0072] For example, the first solenoid valve is controlled to issue an activation signal at a first moment. Then, starting from the first moment, the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder are obtained at preset time intervals. The shift select force value corresponding to the first cylinder for each preset time interval is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder. The shift select force value corresponding to the second cylinder for each preset time interval is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder. If the shift select force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum in the second preset time interval, then the first moment plus the two preset time intervals is the second moment at which the shift select force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum. The time difference between the second moment and the first moment is the first time from the issuance of the activation signal by the first solenoid valve corresponding to the first cylinder to the time when the shift select force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum.

[0073] S102 , calculating a second time required for the second solenoid valve corresponding to the second cylinder to send an activation signal to the point where the shift force value corresponding to the second cylinder is equal to and the shift force value corresponding to the first cylinder is equal to and the maximum.

[0074] In some embodiments, the second solenoid valve can be controlled to issue an activation signal. The in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder can be measured at preset time intervals starting from the issuance of the activation signal by the second solenoid valve. The shift force value corresponding to the first cylinder for each preset time interval is then calculated based on the in-cylinder air pressure and the piston area of ​​the first cylinder. The shift force value corresponding to the second cylinder for each preset time interval is then calculated based on the in-cylinder air pressure and the piston area of ​​the second cylinder. Subsequently, the time at which the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum is determined based on the shift force values ​​of the first cylinder and the shift force values ​​of the second cylinder for each preset time interval. Finally, the first time required from the issuance of the activation signal by the second solenoid valve until the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum is calculated based on the time at which the second solenoid valve corresponding to the second cylinder issues the activation signal and the time at which the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum.

[0075] For example, the second solenoid valve is controlled to issue an activation signal at a third moment. Then, starting from the third moment, the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder are measured at preset time intervals. The shift force value corresponding to the first cylinder is calculated for each preset time interval based on the in-cylinder air pressure and the in-cylinder piston area of ​​the first cylinder. The shift force value corresponding to the second cylinder is calculated for each preset time interval based on the in-cylinder air pressure and the in-cylinder piston area of ​​the second cylinder. If the shift force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum during the second preset time interval, then the third moment plus two preset time intervals equals the fourth moment at which the shift force values ​​corresponding to the first cylinder and the second cylinder are equal and maximum. The time difference between the fourth moment and the third moment is the second time required for the second solenoid valve corresponding to the second cylinder to issue the activation signal until the shift force values ​​corresponding to the second cylinder and the first cylinder are equal and maximum. The third moment may be the same as or different from the first moment.

[0076] S103. When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time; when the first time is less than the second time, it is determined that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time; when the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0077] When the first time is greater than the second time, the first solenoid valve is activated in advance, and the advance time is the difference between the first time and the second time, so that the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal, thereby reducing the difference in the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder, which causes the AMT to overshoot in the neutral position and the AMT cannot quickly shift into neutral.

[0078] When the first time is less than the second time, the second solenoid valve is activated in advance, and the advance time is the difference between the second time and the first time, so that the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal, thereby reducing the overshoot of the AMT return to neutral position caused by the difference between the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder, and the inability of the AMT to quickly shift into neutral.

[0079] When the first time is equal to the second time, the first solenoid valve and the second solenoid valve are activated simultaneously, and the shift force value corresponding to the first cylinder is equal to the shift force value corresponding to the second cylinder.

[0080] The shift actuator solenoid valve control timing calibration method provided in the present application can make the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder equal by adjusting the activation time of the first solenoid valve or the second solenoid valve, thereby reducing the overshoot of the AMT return to neutral position and allowing the AMT to quickly and accurately shift into neutral.

[0081] Figure 2 FIG. 1 shows a schematic diagram of a timing calibration system for controlling a solenoid valve of a gear selection and shifting actuator according to an embodiment of the present application. Figure 2 As shown, the gear selection and shift actuator solenoid valve control timing calibration system provided in this embodiment includes:

[0082] Automatic transmission (AMT) 1, gear selection and shifting actuator 2, first air pressure transmitter, second air pressure transmitter, air pressure monitoring lower computer (MCU) 4, transmission control unit (TCU) 5, data collector 6 and computer equipment 7;

[0083] The gear selection and shifting actuator 2 is installed on the automatic transmission 1 and is used for performing gear shifting operations;

[0084] The first air pressure transmitter is connected to the first air cylinder on one side of the gear selection and shifting actuator 2 and the air pressure monitoring slave computer 4, and is used to send the cylinder air pressure of the first cylinder to the air pressure monitoring slave computer 4;

[0085] The second air pressure transmitter is connected to the second air cylinder on the other side of the gear selection and shifting actuator 2 and the air pressure monitoring slave computer 4, and is used to send the cylinder air pressure of the second cylinder to the air pressure monitoring slave computer 4;

[0086] The air pressure monitoring lower computer 4 is connected to the collector 6 and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder to the collector 6;

[0087] The transmission control unit 5 is connected to the first solenoid valve corresponding to the first cylinder and the second solenoid valve corresponding to the second cylinder, and is used to send the activation time of the first solenoid valve and the activation time of the second solenoid valve to the collector 6;

[0088] The data collector 6 is connected to the computer device 7 and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device 7;

[0089] The computer device 7 is configured to calculate a first time required for the first solenoid valve to issue an activation signal until a shift force value corresponding to the first cylinder and a shift force value corresponding to the second cylinder are equal and maximum; wherein the shift force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0090] calculating a second time required for the second solenoid valve to send an activation signal until the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum;

[0091] When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time;

[0092] When the first time is less than the second time, determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time;

[0093] When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0094] Need to explain, Figure 2 Only one air pressure transmitter 3 is shown.

[0095] In some embodiments, the first air pressure transmitter transmits the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer 4 at a preset time interval after the first solenoid valve issues an activation signal, and the second air pressure transmitter transmits the in-cylinder air pressure of the second cylinder to the air pressure monitoring slave computer 4 at a preset time interval after the first solenoid valve issues an activation signal. For example, when the transmission control unit 5 detects the activation signal from the first solenoid valve, it sends signals to the first and second air pressure transmitters, causing them to collect the in-cylinder air pressures of the corresponding cylinders at preset time intervals.

[0096] The air pressure monitoring lower computer 4 sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector 6, and the collector 6 sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device 7. The computer device 7 calculates the shift selection force value corresponding to the first cylinder in each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder in each preset time interval, calculates the shift selection force value corresponding to the second cylinder in each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder in each preset time interval, and determines the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder in each preset time interval; calculates the first time required from the first solenoid valve sending the activation signal to the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder being equal and maximum according to the time when the first solenoid valve sends the activation signal and the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum.

[0097] In some embodiments, the first air pressure transmitter transmits the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer 4 at a preset time interval starting from the issuance of an activation signal by the second solenoid valve. The second air pressure transmitter transmits the in-cylinder air pressure of the second cylinder to the air pressure monitoring slave computer 4 at a preset time interval starting from the issuance of an activation signal by the second solenoid valve. For example, when the transmission control unit 5 detects the issuance of an activation signal by the second solenoid valve, it sends signals to the first and second air pressure transmitters, causing them to collect the in-cylinder air pressures of the corresponding cylinders at preset time intervals.

[0098] The air pressure monitoring lower computer 4 sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector 6, and the collector 6 sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device 7. The computer device 7 calculates the shift selection force value corresponding to the first cylinder in each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder in each preset time interval, calculates the shift selection force value corresponding to the second cylinder in each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder in each preset time interval, and determines the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder in each preset time interval; calculates the second time required from the time when the second solenoid valve sends the activation signal to the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the time when the second solenoid valve sends the activation signal and the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum.

[0099] As an implementation method, the collector 6 is a CAN collector, which can synchronize the solenoid valve activation signal and the cylinder air pressure signal, and send the cylinder air pressure of the first cylinder and the cylinder air pressure of the second cylinder sent by the air pressure monitoring lower computer 4, as well as the activation signal of the first solenoid valve and the activation signal of the second solenoid valve to the computer device 7.

[0100] In some embodiments, the first air pressure transmitter is connected to the air pressure monitoring lower computer 4 through a wiring harness, the second air pressure transmitter is connected to the air pressure monitoring lower computer 4 through a wiring harness, the air pressure monitoring lower computer 4 is connected to the collector 6 through a wiring harness, the transmission control unit 5 is connected to the first solenoid valve, the second solenoid valve and the collector 6 through a wiring harness, and the collector 6 is connected to the computer device 7 through a data cable, thereby realizing data transmission.

[0101] The present application provides a method for calibrating the control timing of the solenoid valve of the gear selection and shift actuator, in which the air pressure transmitter sends the in-cylinder air pressure of the cylinders on both sides of the gear selection and shift actuator to the air pressure monitoring slave computer, the collector receives the in-cylinder air pressure of the cylinder sent by the air pressure monitoring slave computer, and the activation signal of the solenoid valve sent by the transmission control unit, and sends the in-cylinder air pressure and the activation signal to the computer device. The computer device adjusts the activation time of the first solenoid valve or the second solenoid valve to make the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder equal, thereby reducing the overshoot of the AMT return to neutral position and allowing the AMT to quickly and accurately shift into neutral.

[0102] Figure 3FIG. 1 shows a schematic structural diagram of a timing calibration device for a solenoid valve control of a gear selection and shifting actuator according to an embodiment of the present application. Figure 3 As shown, the gear selection and shift actuator solenoid valve control timing calibration device 10 of this embodiment is used to implement the above method. The gear selection and shift actuator solenoid valve control timing calibration device 10 of this embodiment includes:

[0103] a first calculation module, configured to calculate a first time required from the time a first solenoid valve corresponding to a first cylinder on one side of the shift selector actuator issues an activation signal to the time when a shift force value corresponding to the first cylinder and a shift force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum; wherein the shift force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder;

[0104] a second calculation module, configured to calculate a second time required from the second solenoid valve corresponding to the second cylinder sending an activation signal to the time when the shift force value corresponding to the second cylinder is equal to and the shift force value corresponding to the first cylinder is equal to and maximum to the second time;

[0105] A determination module is used to determine that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve when the first time is greater than the second time, and the earlier time is the difference between the first time and the second time; when the first time is less than the second time, determine that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time; when the first time is equal to the second time, determine that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

[0106] The shift actuator solenoid valve control timing calibration device 10 provided in the embodiment of the present application can execute the above method embodiment. Its specific implementation principles and technical effects can be found in the above method embodiment, and this embodiment will not be repeated here.

[0107] Figure 4 FIG1 shows a hardware structure diagram of an electronic device provided by an embodiment of the present application. Figure 4 As shown, the electronic device 20 is used to implement the operations corresponding to the electronic device in any of the above method embodiments. The electronic device 20 of this embodiment may include: a memory 21, a processor 22 and a communication interface 23.

[0108] Memory 21 is used to store computer instructions. Memory 21 may include high-speed random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk memory. It can also be a USB flash drive, a mobile hard drive, a read-only memory, a magnetic disk, or an optical disk.

[0109] The processor 22 is used to execute the computer instructions stored in the memory to implement the control timing calibration method of the solenoid valve of the gear selection and shifting actuator in the above embodiment. For details, please refer to the relevant description in the above method embodiment. The processor 22 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the invention can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0110] Optionally, the memory 21 may be independent or integrated with the processor 22 .

[0111] The communication interface 23 may be connected to the processor 22. The processor 22 may control the communication interface 23 to implement functions of receiving and sending signals.

[0112] The electronic device provided in this embodiment can be used to execute the above-mentioned method for calibrating the control timing of the solenoid valve of the gear selection and shifting actuator. Its implementation method and technical effects are similar and will not be described in detail in this embodiment.

[0113] The present application also provides a vehicle, comprising the above-mentioned gear selection and shift actuator solenoid valve control timing calibration system.

[0114] The present application also provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed by a processor, they are used to implement the methods provided in the various embodiments described above.

[0115] The present application also provides a computer program product, comprising computer instructions stored in a computer-readable storage medium. At least one processor of a device can read the computer instructions from the computer-readable storage medium, and at least one processor can execute the computer instructions so that the device implements the methods provided in the various embodiments described above.

[0116] An embodiment of the present application also provides a chip, which includes a memory and a processor, wherein the memory is used to store computer instructions, and the processor is used to call and execute the computer instructions from the memory, so that a device equipped with the chip executes the methods described in the various possible implementation modes above.

[0117] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that they may modify the technical solutions described in the aforementioned embodiments or replace some or all of the technical features therein with equivalents. However, such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of this application.

Claims

1. A method for calibrating the control timing of a solenoid valve of a gear selection and shifting actuator, characterized in that: The method comprises: calculating a first time required for a first solenoid valve corresponding to a first cylinder on one side of a shift selector actuator to issue an activation signal until a shift selector force value corresponding to the first cylinder and a shift selector force value corresponding to a second cylinder on the other side of the shift selector actuator are equal and maximum; wherein the shift selector force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift selector force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder; calculating a second time required from the second solenoid valve corresponding to the second cylinder sending an activation signal to the time when the shift selection force value corresponding to the second cylinder and the shift selection force value corresponding to the first cylinder are equal and maximum; When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time; When the first time is less than the second time, determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time; When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

2. The method according to claim 1, characterized in that The calculating of the first time required for the first solenoid valve corresponding to the first cylinder on one side of the shift selector actuator to send an activation signal until the shift selector force value corresponding to the first cylinder and the shift selector force value corresponding to the second cylinder on the other side of the shift selector actuator are equal and maximum specifically includes: acquiring the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at preset time intervals after the first solenoid valve sends an activation signal, calculating the shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and calculating the shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder; Determining the time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum according to the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval; The first time required for the first solenoid valve to send out the activation signal and the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum is calculated based on the time when the first solenoid valve sends out the activation signal and the time when the gear selection and shift force value corresponding to the first cylinder and the gear selection and shift force value corresponding to the second cylinder are equal and maximum.

3. The method according to claim 1, characterized in that The calculating of the second time required from the second solenoid valve corresponding to the second cylinder sending the activation signal to the time when the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum specifically includes: acquiring the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at preset time intervals after the second solenoid valve sends an activation signal, calculating a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and calculating a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder; determining, based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval, a time when the shift selection force value corresponding to the second cylinder is equal to and maximum to the shift selection force value corresponding to the first cylinder; According to the time when the second solenoid valve sends an activation signal and the time when the gear selection and shift force value corresponding to the second cylinder is equal to and the gear selection and shift force value corresponding to the first cylinder is equal and maximum, the second time required from the time when the solenoid valve corresponding to the second cylinder sends an activation signal to the time when the gear selection and shift force value corresponding to the second cylinder is equal to and the gear selection and shift force value corresponding to the first cylinder is equal and maximum is calculated.

4. A timing calibration system for the solenoid valve control of a gear selection and shifting actuator, characterized in that: The system comprises: Automatic transmission, gear selection and shifting actuator, first air pressure transmitter, second air pressure transmitter, air pressure monitoring lower computer, transmission control unit, data collector and computer equipment; The gear selection and shifting actuator is installed on the automatic transmission and is used for performing gear shifting operations; The first air pressure transmitter is connected to the first air cylinder on one side of the gear selection and shifting actuator and the air pressure monitoring slave computer, and is used to send the cylinder air pressure of the first cylinder to the air pressure monitoring slave computer; The second air pressure transmitter is connected to the second air cylinder on the other side of the gear selection and shifting actuator and the air pressure monitoring slave computer, and is used to send the cylinder air pressure of the second cylinder to the air pressure monitoring slave computer; The air pressure monitoring slave computer is connected to the acquisition instrument and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder to the acquisition instrument; The transmission control unit is connected to a first solenoid valve corresponding to the first cylinder and a second solenoid valve corresponding to the second cylinder, and is used to send the activation time of the first solenoid valve and the activation time of the second solenoid valve to the data collector; The data collector is connected to the computer device and is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device; The computer device is configured to calculate a first time required from the issuance of an activation signal by the first solenoid valve to the time when the shift select force value corresponding to the first cylinder and the shift select force value corresponding to the second cylinder are equal and maximum; wherein the shift select force value corresponding to the first cylinder is calculated based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder, and the shift select force value corresponding to the second cylinder is calculated based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder; calculating a second time required for the second solenoid valve to send an activation signal until the shift force value corresponding to the second cylinder and the shift force value corresponding to the first cylinder are equal and maximum; When the first time is greater than the second time, it is determined that the activation time of the first solenoid valve is earlier than the activation time of the second solenoid valve, and the earlier time is the difference between the first time and the second time; When the first time is less than the second time, determining that the activation time of the second solenoid valve is earlier than the activation time of the first solenoid valve, and the earlier time is the difference between the second time and the first time; When the first time is equal to the second time, it is determined that the activation time of the first solenoid valve is the same as the activation time of the second solenoid valve.

5. The system according to claim 4, characterized in that The first air pressure transmitter sends the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer at a preset time interval after the first solenoid valve sends an activation signal; The second air pressure transmitter sends the air pressure in the second cylinder to the air pressure monitoring slave computer at a preset time interval after the first solenoid valve sends an activation signal; The air pressure monitoring slave computer sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector; The data collector is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device; The computer device is configured to calculate a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder at each preset time interval, calculate a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder at each preset time interval, and determine a time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval; The first time required from the time when the first solenoid valve sends the activation signal to the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum is calculated based on the time when the first solenoid valve sends the activation signal and the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum.

6. The system according to claim 4, characterized in that The first air pressure transmitter sends the in-cylinder air pressure of the first cylinder to the air pressure monitoring slave computer at a preset time interval after the second solenoid valve sends an activation signal; The second air pressure transmitter sends the air pressure in the second cylinder to the air pressure monitoring slave computer at a preset time interval after the second solenoid valve sends an activation signal; The air pressure monitoring slave computer sends the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval to the collector; The data collector is used to send the in-cylinder air pressure of the first cylinder and the in-cylinder air pressure of the second cylinder at each preset time interval, as well as the activation time of the first solenoid valve and the activation time of the second solenoid valve to the computer device; The computer device is configured to calculate a shift selection force value corresponding to the first cylinder at each preset time interval based on the in-cylinder air pressure of the first cylinder and the in-cylinder piston area of ​​the first cylinder at each preset time interval, calculate a shift selection force value corresponding to the second cylinder at each preset time interval based on the in-cylinder air pressure of the second cylinder and the in-cylinder piston area of ​​the second cylinder at each preset time interval, and determine a time when the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder are equal and maximum based on the shift selection force value corresponding to the first cylinder and the shift selection force value corresponding to the second cylinder at each preset time interval; According to the time when the second solenoid valve sends the activation signal and the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum, the second time required from the time when the second solenoid valve sends the activation signal to the time when the shift force value corresponding to the first cylinder and the shift force value corresponding to the second cylinder are equal and maximum is calculated.

7. The system according to any one of claims 4 to 6, characterized in that: The collector is a CAN collector.

8. The calibration system according to any one of claims 4 to 6, characterized in that: The first air pressure transmitter is connected to the air pressure monitoring slave computer through a wiring harness, the second air pressure transmitter is connected to the air pressure monitoring slave computer through a wiring harness, the air pressure monitoring slave computer is connected to the collector through a wiring harness, the transmission control unit is connected to the first solenoid valve, the second solenoid valve and the collector through a wiring harness, and the collector is connected to the computer device through a data cable.

9. A computer device, characterized in that: include: a processor, and a memory communicatively connected to the processor; The memory stores computer instructions; The processor executes the computer instructions stored in the memory to implement the method for calibrating the control timing of the solenoid valve of the gear selection and shifting actuator according to any one of claims 1 to 3.

10. A vehicle, characterized in that: The invention comprises a solenoid valve control timing calibration system for a gear selection and shifting actuator as described in any one of claims 4 to 8.

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