CN114235395A - Gearbox offline detection and self-calibration method and system - Google Patents
Gearbox offline detection and self-calibration method and system Download PDFInfo
- Publication number
- CN114235395A CN114235395A CN202210164336.6A CN202210164336A CN114235395A CN 114235395 A CN114235395 A CN 114235395A CN 202210164336 A CN202210164336 A CN 202210164336A CN 114235395 A CN114235395 A CN 114235395A
- Authority
- CN
- China
- Prior art keywords
- detection
- gearbox
- calibration
- value
- rotating speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
Abstract
The invention discloses a gearbox offline detection and self-calibration method and system, wherein the method comprises the following steps: sending an offline program starting instruction and/or a self-calibration program starting instruction to the TCU, and entering an offline detection program and/or a self-calibration program in response to the TCU state meeting an offline detection state and/or a self-calibration state; sending a rotating speed control instruction, or a rotating speed control instruction and a torque control instruction, wherein the rotating speed control instruction is used for controlling the rotating speed of an input motor to a preset value, and the torque control instruction is used for controlling the torque of a loading motor to a preset value; and sending an offline detection instruction and/or a self-calibration instruction to the TCU, and acquiring an offline detection result and/or a self-calibration result according to offline detection information and/or self-calibration information fed back by the TCU. The invention realizes the automatic and comprehensive detection and calibration of the gear box offline, reduces the workload of operators, improves the gear box detection accuracy and greatly reduces the problem of failure rework after the gear box is loaded.
Description
Technical Field
The invention relates to the technical field of gearbox detection, in particular to a gearbox offline detection and self-calibration method and system.
Background
The traditional gearbox offline detection is to detect whether the gearbox selects gears and a gear shifting mechanism is normally executed or not and whether the gearbox can be shifted into corresponding gears or not; whether a sensor and an actuator on the gearbox have defects or not, whether the combination of an internal clutch pack is normal or not, whether the speed ratio under each gear meets the design requirement or not, whether some oil pressure combination parameters of the clutch are reasonable or not and the like need to be judged manually by workshop workers, or need to be placed on the aspect of the whole vehicle after the gearbox is loaded, and then the detection and the calibration are carried out on the aspect of the whole vehicle. The detection and calibration mode needs manual operation of workshop workers, has higher technical requirements on the detection and calibration mode, and can possibly leave problems to the whole vehicle stage, thereby causing greater safety risk and economic loss.
Therefore, a set of automatic and standardized gearbox offline detection and calibration flow method and system needs to be designed, complete and accurate detection and calibration are carried out on the gearbox before loading, and unnecessary gearbox maintenance rework and economic loss caused by the gearbox maintenance rework after loading are avoided.
Disclosure of Invention
The invention aims to provide a gearbox offline detection and self-calibration method and system, which aim to solve the problems that gearbox offline detection and calibration are not comprehensive and manual judgment is needed in the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
a gearbox offline detection and self-calibration method comprises the following steps:
sending an offline program starting instruction and/or a self-calibration program starting instruction to the TCU, and entering an offline detection program and/or a self-calibration program in response to the TCU state meeting an offline detection state and/or a self-calibration state;
sending a rotating speed control instruction, or a rotating speed control instruction and a torque control instruction, wherein the rotating speed control instruction is used for controlling the rotating speed of an input motor to a preset value, and the torque control instruction is used for controlling the torque of a loading motor to a preset value;
and sending an offline detection instruction and/or a self-calibration instruction to the TCU, and acquiring an offline detection result and/or a self-calibration result according to offline detection information and/or self-calibration information fed back by the TCU.
Further, sending an offline detection instruction to the TCU, and acquiring an offline detection result according to the offline detection information fed back by the TCU includes:
sending a pump flow detection instruction, and acquiring a transmission pump flow detection result according to a pump flow numerical value fed back by the TCU;
sending a system pressure detection instruction, and acquiring a system pressure detection result according to a system pressure value fed back by the TCU;
sending a detection instruction of a gearbox output shaft rotating speed sensor, and acquiring a gearbox output shaft rotating speed detection result according to a gearbox output shaft rotating speed value fed back by a TCU (transmission control unit);
sending a detection instruction of an output rotating speed sensor of the hydraulic torque converter, and acquiring an output rotating speed detection result of the hydraulic torque converter according to a rotating speed value of an output shaft of the gearbox and the output rotating speed value of the hydraulic torque converter fed back by the TCU;
sending a detection instruction of an outlet oil temperature sensor of the hydraulic torque converter, and acquiring an outlet oil temperature detection result of the hydraulic torque converter according to an outlet oil temperature value of the hydraulic torque converter fed back by the TCU;
and/or the presence of a gas in the gas,
and sending a sequential up-down gear detection instruction, and acquiring a sequential up-down gear detection result according to a gear value fed back by the TCU, a rotating speed value of an output shaft of the gearbox and an output rotating speed value of the hydraulic torque converter.
Further, the obtaining a pump flow detection result according to the pump flow numerical value fed back by the TCU includes:
and judging whether the received pump flow numerical value is within a preset range of the pump flow, if so, outputting that the pump flow detection is passed, and if not, outputting that the pump flow detection is not passed.
Further, the obtaining a system pressure detection result according to the system pressure value fed back by the TCU includes:
and judging whether the received system pressure value is within a preset range value of the system pressure, if so, outputting that the system pressure detection is passed, and if not, outputting that the system pressure detection is not passed.
Further, the obtaining of the detection result of the rotating speed value of the output shaft of the gearbox according to the rotating speed value of the output shaft of the gearbox fed back by the TCU includes:
and judging whether the difference value between the rotating speed value of the output shaft of the gearbox and the rotating speed value of the loading motor is within a preset range value, if so, outputting that the rotating speed sensor of the output shaft of the gearbox passes the detection, and if not, outputting that the rotating speed sensor of the output shaft of the gearbox does not pass the detection.
Further, the sending a detection instruction of an output rotation speed sensor of the torque converter, and obtaining an output rotation speed detection result of the torque converter according to the rotation speed value of the transmission output shaft and the output rotation speed value of the torque converter fed back by the TCU includes:
sending a detection instruction of a hydraulic torque converter output speed sensor, and controlling a gearbox to enter a preset gear;
and judging whether the product of the preset gear ratio of the gearbox and the rotating speed value of the output shaft of the gearbox and the difference value of the output rotating speed value of the hydraulic torque converter are within a preset range value, if so, outputting the detection of the output rotating speed sensor of the hydraulic torque converter to pass, and if not, outputting the detection of the output rotating speed sensor of the hydraulic torque converter to not pass.
Further, the obtaining of the detection result of the outlet oil temperature of the hydraulic torque converter according to the outlet oil temperature value of the hydraulic torque converter fed back by the TCU includes:
and judging whether the received numerical value of the outlet oil temperature of the hydraulic torque converter is within a preset range value of the outlet oil temperature, if so, outputting the detection of the outlet oil temperature sensor of the hydraulic torque converter to pass, and if not, outputting the detection of the outlet oil temperature sensor of the hydraulic torque converter to not pass.
Further, the sending a sequential upshift and downshift detection instruction, and obtaining a sequential upshift and downshift detection result according to the gear position value fed back by the TCU, the transmission output shaft rotation speed value, and the torque converter output rotation speed value includes:
sending a sequential up-down shift detection instruction, and controlling a gearbox to switch gears according to a preset sequence;
and acquiring a gearbox gear speed ratio according to the rotating speed value of the output shaft of the gearbox and the output rotating speed value of the hydraulic torque converter, and judging whether the difference value of the gearbox gear speed ratio and a preset gearbox gear speed ratio is in a preset range, if so, passing the detection of the output gear speed ratio, and if not, failing to pass the detection of the output gear speed ratio.
Further, sending the self-calibration instruction to the TCU, and acquiring the self-calibration result according to the self-calibration information fed back by the TCU includes:
sending a clutch semi-joint pressure calibration instruction, and acquiring a clutch semi-joint pressure calibration result according to a final calibration pressure value fed back by the TCU;
and after a clutch half-combination pressure calibration result is obtained, a clutch quick oil filling time calibration instruction is sent, and a clutch quick oil filling time calibration result is obtained according to a final calibration time value fed back by the TCU.
Further, the obtaining of the calibration result of the clutch half-engagement pressure comprises:
controlling the clutch to be calibrated to be combined and filled with oil, and increasing the half-combination-point oil filling pressure of the clutch to be calibrated until the half-combination-point oil filling pressure of the clutch enables the rotating speed change value of the turbine to be larger than the preset rotating speed change value of the turbine, so that the current half-combination-point oil filling pressure is the half-combination pressure of the clutch;
and repeating the steps until the half-combination pressure of all the clutches is obtained.
Further, the obtaining of the calibration result of the clutch quick oil filling time includes:
controlling the clutch to be calibrated to be combined, and increasing the quick oil filling time of the clutch to be calibrated until the quick oil filling time enables the rotating speed change value of the turbine to be larger than the preset rotating speed change value of the turbine, wherein the current oil filling time T1 is the quick oil filling time of the clutch;
and repeating the steps until the quick oil filling time of all the clutches is obtained.
Further, before the step of sending a calibration command of the clutch half-engagement pressure, the method further comprises the following steps:
and sending a hydraulic torque converter outlet oil temperature detection instruction, judging whether the received hydraulic torque converter outlet oil temperature value is greater than an oil temperature preset value, if so, outputting the self-calibrated oil temperature to meet the requirement, and if not, heating the hydraulic torque converter outlet oil temperature value until the current outlet oil temperature value is greater than the oil temperature preset value.
Further, the gearbox offline detection and self-calibration method comprises an upper computer, wherein the upper computer comprises a memory and a processor, the memory is used for storing instructions, and the instructions are used for controlling the processor to operate so as to execute the gearbox offline detection and self-calibration method according to any one of claims 1 to 12.
Furthermore, the system also comprises a TCU, and the TCU is in bidirectional communication connection with the upper computer through a CAN communication module.
According to the technical scheme, the embodiment of the invention at least has the following effects:
1. according to the offline detection and self-calibration method, the offline detection stage and the self-calibration stage are entered by sending the offline program starting instruction and the self-calibration program starting instruction, so that a plurality of elements in the gearbox can be detected, and the clutch oil charging parameters can be self-calibrated, so that the automatic and comprehensive offline detection and calibration of the gearbox are realized, the workload of operators is reduced, the detection accuracy of the gearbox is improved, and the problem of fault rework after the gearbox is loaded is greatly reduced;
2. the offline detection and self-calibration method provided by the invention can detect the flow, pressure, rotating speed, temperature, gear combination and other states of the gearbox during offline detection, and simultaneously detect the effectiveness of the sensor and the actuator arranged on the gearbox, thereby realizing the offline comprehensive detection of the gearbox, reducing the workload of operators, improving the detection accuracy of the gearbox,
3. according to the off-line detection and self-calibration method, the calibration of the clutch quick oil filling time is carried out after the calibration result of the clutch half-combination pressure is obtained during self-calibration, so that the self-calibration of the clutch oil filling parameter can be effectively completed.
Drawings
FIG. 1 is a schematic diagram of an offline detection and self-calibration system in accordance with an embodiment of the present invention;
FIG. 2 is a flowchart of a method of an offline detection stage in the offline detection and self-calibration method according to an embodiment of the present invention;
FIG. 3 is a flowchart of a self-calibration phase of the offline detection and self-calibration method according to the embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
A certain patent in the prior art can detect a gear request, an accelerator pedal and a brake pedal; a certain patent only detects whether the gears are hooked in place, and the two patents judge the detection result manually. In another patent, the TCU is detected by simulating the vehicle signal, and the logic verification of the TCU is focused on, but the actuators, sensors and actual transmission state information are not detected. In addition, some documents only test gear selection and gear shifting, and do not test the gearbox comprehensively.
The invention provides a method and a system for offline detection and self-calibration of a gearbox, which are used for detecting the flow, pressure, rotating speed, temperature, gear combination and other states of the gearbox in the offline stage of the gearbox, detecting the effectiveness of a sensor and an actuator installed on the gearbox, and self-calibrating the oil charging parameters of a clutch, thereby realizing the automatic comprehensive detection and calibration of the offline of the gearbox, reducing the workload of operators, improving the detection accuracy of the gearbox, and greatly reducing the problem of failure rework after the gearbox is loaded.
Example 1
As shown in fig. 1, the invention provides a gearbox offline detection and self-calibration system, which comprises an upper computer, an input motor, a loading motor, a gearbox, a CAN communication module, a gearbox control unit (TCU), a clutch control solenoid valve, a rotation speed sensor, a pressure sensor, a temperature sensor, a flow sensor and the like.
The upper computer is used for controlling the rotating speed and the torque of the input motor and the loading motor; judging the states of the gearbox and the sensor according to information fed back by the gearbox control unit; and the gear decision instruction is sent to a gearbox control unit through a CAN communication module.
The input motor is connected with the input end of the gearbox and used for providing power input for the gearbox and controlling the input rotating speed of the gearbox.
The loading motor is connected with the output end of the gearbox and used for providing load for the gearbox and controlling the torque of the output end of the gearbox.
The transmission internally comprises a hydraulic torque converter, a gear shaft, a clutch pack and the like, and is used for changing the input rotating speed and torque of the transmission and responding to starting and gear shifting requirements sent by a transmission control unit.
The CAN communication module converts a gear shifting command sent by the upper computer into a CAN signal and transmits the CAN signal to the gearbox control unit.
The gearbox control unit (TCU) is used for acquiring a gear request signal transmitted by the CAN communication module and controlling a clutch corresponding to a gear to control the opening or closing of the electromagnetic valve; and signals of the rotating speed sensor, the flow sensor, the pressure sensor and the temperature sensor are collected at the same time, and the numerical information of the sensors is transmitted to an upper computer through a CAN communication module.
The clutch control solenoid valve is used for controlling clutch combination oil pressure.
The rotating speed sensor is arranged on the gearbox and used for collecting the rotating speed of an output shaft of the gearbox and the output rotating speed of a hydraulic torque converter of the gearbox.
The pressure sensor is arranged on the gearbox and used for collecting the pressure of the gearbox system and the pressure of each clutch pack.
The temperature sensor is arranged on the gearbox and used for collecting the oil temperature at the outlet of the hydraulic torque converter of the gearbox.
The flow sensor is arranged at the outlet of the gearbox pump and used for collecting the outlet flow of the gearbox pump.
In the system, the upper computer includes a memory and a processor, where the memory is used to store instructions for controlling the processor to operate so as to execute the gearbox offline detection and self-calibration method provided in embodiment 2 of the present invention.
Example 2
The embodiment provides a gearbox offline detection and self-calibration method which is realized based on the gearbox offline detection and self-calibration system provided by the embodiment 1.
The offline detection method is shown in fig. 2, and the specific process is as follows:
step (1), an operator presses an offline detection button on an upper computer, sends an instruction to a TCU, and if a response signal of a gearbox control unit is received within 3s, the upper computer displays that offline detection is started, starts an offline detection program, and then the step (2) is carried out; if the response signal is not received within 5s, the program cannot be entered, the upper computer screen displays that the off-line detection process cannot be entered, and an operator checks the TCU.
Step (2), the upper computer sends an instruction to control the input motor to gradually increase the speed from static to 800rpm, and the detection is started:
and the upper computer sends pump flow detection information to the TCU and continuously detects and judges the pump flow value sent by the TCU. If the flow is within the set numerical range, displaying that the pump flow detection is passed by the upper computer screen, and entering the next detection step; if not, the upper computer screen displays that the pump flow detection fails, and an operator checks the reason that the flow is abnormal.
The upper computer sends system pressure detection information to the TCU, continuously detects and judges a system pressure value sent by the TCU, and if the pressure is in a set value range, a screen of the upper computer displays that the system pressure detection is passed and enters the next detection step; if not, the upper computer screen displays that the system pressure detection fails, and an operator checks the reason why the system pressure is abnormal.
The upper computer sends detection information of a gearbox output shaft rotation speed sensor to the TCU, receives a gearbox output shaft rotation speed value sent by the TCU, compares the gearbox output shaft rotation speed with a loading motor rotation speed value, and if the difference value of the two rotation speeds is within a set numerical range, the upper computer screen displays that the gearbox output shaft rotation speed sensor passes the detection and enters the next detection step; if not, the upper computer screen displays that the rotating speed sensor of the output shaft of the gearbox fails to detect, and an operator checks the reason that the rotating speed of the output shaft is abnormal.
The upper computer sends detection information of the torque converter output speed sensor to the TCU, receives a transmission output shaft speed value and a torque converter output speed value sent by the TCU, and the TCU controls the transmission to enter a forward 1 gear. If the product of the rotating speed value of the output shaft of the gearbox and the forward 1-gear speed ratio and the difference value of the output rotating speed of the hydraulic torque converter are within a set numerical range, displaying that the output rotating speed sensor of the hydraulic torque converter passes the detection by an upper computer screen, and entering the next detection step; if not, the upper computer screen displays that the detection of the torque converter output rotating speed sensor fails, and an operator checks the reason why the torque converter output rotating speed sensor is abnormal.
The upper computer sends detection information of the hydraulic torque converter outlet oil temperature sensor to the TCU, continuously detects and judges an oil temperature value, and if the oil temperature is in a set value range, a screen of the upper computer displays that the hydraulic torque converter outlet oil temperature sensor passes the detection and enters the next detection step; if not, the upper computer screen displays that the hydraulic torque converter outlet oil temperature sensor does not detect the oil temperature sensor, and an operator checks the reason that the hydraulic torque converter outlet oil temperature is abnormal.
The upper computer sends sequential up-down shift detection information to the TCU, the TCU controls the gear of the gearbox to change according to the conditions of 'forward 1 gear-forward 2 gear- … forward highest gear- … -forward 2 gear-forward 1 gear-neutral gear-reverse 1 gear-reverse 2 gear- … reverse highest gear- … -reverse 2 gear-reverse 1 gear-neutral gear', and the gear of each gear is continuously shifted to the next gear after being shifted for 20 s. The TCU sends information such as gear, a rotating speed value of an output shaft of the gearbox, an output rotating speed value of the hydraulic torque converter and the like to an upper computer. The upper computer calculates the gear speed ratio of the gearbox according to the rotating speed value of the output shaft of the gearbox and the output rotating speed value of the hydraulic torque converter, compares the gear speed ratio with the designed gear speed ratio of the gearbox, and if the gear speed ratio difference value is within a set numerical range, the upper computer sends the gear speed ratio detection to the TCU, the TCU can control the gearbox to enter the next gear, and after the last gear passes the execution, the step (3) is carried out; if not, the gear speed ratio detection is sent to the TCU, the sequential gear lifting detection program is terminated, and an operator checks the reason that the electromagnetic valve is abnormally executed or the clutch pack in the gearbox is abnormally combined.
And (3) the upper computer sends information of end of line detection to the TCU, the TCU controls the transmission case to be in a neutral position, the rotating speed of the input motor is reduced to 0rpm, and the line detection is completed.
The self-calibration method is shown in fig. 3, and the specific process is as follows:
step (1), an operator presses an offline self-calibration button on an upper computer, sends an instruction to a TCU, and if a response signal of a gearbox control unit is received within 3s, the upper computer displays that offline self-calibration can be started, an offline self-calibration program is started, and the step (2) is entered; if the response signal is not received within 5s, the program cannot be entered, the upper computer screen displays that the off-line self-calibration flow cannot be entered, and an operator checks the TCU.
And (2) the TCU sends the outlet oil temperature of the hydraulic torque converter to an upper computer, and the upper computer judges whether the oil temperature value meets the requirement of offline self-calibration temperature. If the oil temperature is greater than the set value, displaying that the self-calibration oil temperature is met by the upper computer screen, and entering the step (3); if not, the upper computer screen displays that the oil temperature is low and is increasing the temperature, the experiment table preheats the oil temperature, and when the oil temperature is larger than a set value, the upper computer screen displays that the self-calibration oil temperature is met, and the step (3) is carried out.
And (3) gradually increasing the speed of the input motor from rest to 1000rpm, controlling the loading motor to load 500Nm, and starting self-calibration:
and (3-1) the upper computer sends clutch half-combination pressure calibration information to the TCU, the TCU controls the combination clutch to be completely combined, the clutch to be calibrated starts to charge oil, the oil charge pressure of the clutch half-combination point is continuously increased, when the oil pressure enables the change difference value of the turbine rotating speed to be larger than a set value, the pressure is recorded as the final calibration pressure, the calibration of the next clutch is started until the calibration of all the clutches is completed, and the step (3-2) is carried out.
And (3-2) the upper computer sends the calibration information of the quick oil filling time of the clutch to the TCU, the TCU controls the combined clutch to be completely combined, the quick oil filling time of the clutch to be calibrated is continuously increased, when the oil filling time at a certain moment enables the change difference value of the rotating speed of the turbine to be greater than a set value, the time is recorded as the final calibration time, the calibration of the next clutch is started until the calibration of all the clutches is completed, and the step (4) is carried out.
And (4) sending offline self-calibration ending request information to the TCU by the upper computer, controlling all clutches of the gearbox to be disengaged by the TCU, reducing the rotating speed of the input motor to 0rpm, reducing the torque of the loading motor to 0Nm, and finishing offline self-calibration.
When the self-calibration process is carried out, the outlet oil temperature of the hydraulic torque converter needs to be judged, and after the outlet oil temperature of the hydraulic torque converter meets the requirement, the rotating speed of the input motor and the torque of the loading motor are controlled to be preset values. Then, calibrating the semi-combination pressure of the clutch, and then calibrating the quick oil charging time of the clutch after the semi-combination pressure of the clutch is calibrated.
Example 3
The difference between this embodiment and embodiment 2 is that the offline detection method of this embodiment defines the sequence of each detection step in the offline detection method, and specifically includes the following steps:
step (1), an operator presses an offline detection button on an upper computer, sends an instruction to a TCU, and if a response signal of a gearbox control unit is received within 3s, the upper computer displays that offline detection is started, starts an offline detection program, and then the step (2) is carried out; if the response signal is not received within 5s, the program cannot be entered, the upper computer screen displays that the off-line detection process cannot be entered, and an operator checks the TCU.
Step (2), the upper computer sends an instruction to control the input motor to gradually increase the speed from static to 800rpm, and the detection is started:
and (2-1) the upper computer sends pump flow detection information to the TCU, and continuously detects and judges the pump flow numerical value sent by the TCU. If the flow is within the set numerical range, displaying that the pump flow detection is passed by the upper computer screen, and entering the next detection step; if not, the upper computer screen displays that the pump flow detection fails, and an operator checks the reason that the flow is abnormal.
Step (2-2), the upper computer sends system pressure detection information to the TCU, and continuously detects and judges a system pressure value sent by the TCU, if the pressure is in a set value range, a screen of the upper computer displays that the system pressure detection is passed, and the next detection step is carried out; if not, the upper computer screen displays that the system pressure detection fails, and an operator checks the reason why the system pressure is abnormal.
Step (2-3) the upper computer sends detection information of the hydraulic torque converter outlet oil temperature sensor to the TCU, detection and judgment are continuously carried out on the oil temperature value, if the oil temperature is in a set numerical range, a screen of the upper computer displays that the hydraulic torque converter outlet oil temperature sensor passes the detection, and the next detection step is carried out; if not, the upper computer screen displays that the hydraulic torque converter outlet oil temperature sensor does not detect the oil temperature sensor, and an operator checks the reason that the hydraulic torque converter outlet oil temperature is abnormal.
Step (2-4), the upper computer sends detection information of a rotating speed sensor of the output shaft of the gearbox to the TCU, receives a rotating speed value of the output shaft of the gearbox sent by the TCU, compares the rotating speed value of the output shaft of the gearbox with a rotating speed value of a loading motor, and if the difference value of the two rotating speeds is within a set numerical range, the upper computer displays that the rotating speed sensor of the output shaft of the gearbox passes the detection, and the step (2-5) is carried out; if not, the upper computer screen displays that the rotating speed sensor of the output shaft of the gearbox fails to detect, and an operator checks the reason that the rotating speed of the output shaft is abnormal.
And (2-5) the upper computer sends the detection information of the torque converter output speed sensor to the TCU, receives the transmission output shaft speed value and the torque converter output speed value sent by the TCU, and the TCU controls the transmission to enter a forward 1 gear. If the product of the rotating speed value of the output shaft of the gearbox and the forward 1-gear speed ratio and the difference value of the output rotating speed of the hydraulic torque converter are in the set numerical range, displaying that the output rotating speed sensor of the hydraulic torque converter passes the detection by an upper computer screen, and entering the step (2-6); if not, the upper computer screen displays that the detection of the torque converter output rotating speed sensor fails, and an operator checks the reason why the torque converter output rotating speed sensor is abnormal.
And (2-6) the upper computer sends sequential up-down shift detection information to the TCU, the TCU controls the gear of the gearbox to change according to the conditions of 'forward 1 gear-forward 2 gear- … forward highest gear- … -forward 2 gear-forward 1 gear-neutral gear-reverse 1 gear-reverse 2 gear- … reverse highest gear- … -reverse 2 gear-reverse 1 gear-neutral gear', and each gear is continuously shifted for 20s and then shifted to the next gear after the gear shifting is completed. The TCU sends information such as gear, a rotating speed value of an output shaft of the gearbox, an output rotating speed value of the hydraulic torque converter and the like to an upper computer. The upper computer calculates the gear speed ratio of the gearbox according to the two rotating speed values, compares the gear speed ratio with the designed gear speed ratio of the gearbox, and if the speed ratio difference value is within a set numerical range, the upper computer sends the gear speed ratio detection to the TCU, the TCU can control the gearbox to enter the next gear, and the step (3) is carried out after the last gear passes; if not, the gear speed ratio detection is sent to the TCU, the sequential gear lifting detection program is terminated, and an operator checks the reason that the electromagnetic valve is abnormally executed or the clutch pack in the gearbox is abnormally combined.
In this embodiment, the sequence from step (2-1) to step (2-3) can be switched arbitrarily, and the sequence from step (2-4) to step (2-6) must first perform step (2-4), then perform step (2-5), and finally perform step (2-6). The method comprises the steps of sending a detection instruction of an outlet oil temperature sensor of the hydraulic torque converter after responding to the detection result of the output rotating speed of the hydraulic torque converter, and sending a detection instruction of sequential up-down shifting after responding to the detection result of the outlet oil temperature of the hydraulic torque converter.
And (3) the upper computer sends information of end of line detection to the TCU, the TCU controls the transmission case to be in a neutral position, the rotating speed of the input motor is reduced to 0rpm, and the line detection is completed.
According to the offline detection and self-calibration method and system provided by the invention, the states of flow, pressure, rotating speed, temperature, gear combination and the like of the gearbox are detected in the offline stage of the gearbox, meanwhile, the effectiveness of a sensor and an actuator arranged on the gearbox is detected, and the oil charging parameters of the clutch are self-calibrated, so that the automatic comprehensive detection and calibration of the offline of the gearbox are realized, the workload of operators is reduced, the detection accuracy of the gearbox is improved, and the problem of failure rework after the gearbox is loaded is greatly reduced.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (14)
1. A gearbox offline detection and self-calibration method is characterized by comprising the following steps:
sending an offline program starting instruction and/or a self-calibration program starting instruction to the TCU, and entering an offline detection program and/or a self-calibration program in response to the TCU state meeting an offline detection state and/or a self-calibration state;
sending a rotating speed control instruction, or a rotating speed control instruction and a torque control instruction, wherein the rotating speed control instruction is used for controlling the rotating speed of an input motor to a preset value, and the torque control instruction is used for controlling the torque of a loading motor to a preset value;
and sending an offline detection instruction and/or a self-calibration instruction to the TCU, and acquiring an offline detection result and/or a self-calibration result according to offline detection information and/or self-calibration information fed back by the TCU.
2. The gearbox offline detection and self-calibration method according to claim 1, wherein the step of sending an offline detection instruction to the TCU, and the step of obtaining the offline detection result according to the offline detection information fed back by the TCU comprises the following steps:
sending a pump flow detection instruction, and acquiring a transmission pump flow detection result according to a pump flow numerical value fed back by the TCU;
sending a system pressure detection instruction, and acquiring a system pressure detection result according to a system pressure value fed back by the TCU;
sending a detection instruction of a gearbox output shaft rotating speed sensor, and acquiring a gearbox output shaft rotating speed detection result according to a gearbox output shaft rotating speed value fed back by a TCU (transmission control unit);
sending a detection instruction of an output rotating speed sensor of the hydraulic torque converter, and acquiring an output rotating speed detection result of the hydraulic torque converter according to a rotating speed value of an output shaft of the gearbox and the output rotating speed value of the hydraulic torque converter fed back by the TCU;
sending a detection instruction of an outlet oil temperature sensor of the hydraulic torque converter, and acquiring an outlet oil temperature detection result of the hydraulic torque converter according to an outlet oil temperature value of the hydraulic torque converter fed back by the TCU;
and/or the presence of a gas in the gas,
and sending a sequential up-down gear detection instruction, and acquiring a sequential up-down gear detection result according to a gear value fed back by the TCU, a rotating speed value of an output shaft of the gearbox and an output rotating speed value of the hydraulic torque converter.
3. The gearbox offline detection and self-calibration method according to claim 2, wherein the obtaining of the pump flow detection result according to the pump flow numerical value fed back by the TCU comprises:
and judging whether the received pump flow numerical value is within a preset range of the pump flow, if so, outputting that the pump flow detection is passed, and if not, outputting that the pump flow detection is not passed.
4. The gearbox offline detection and self-calibration method according to claim 2, wherein the obtaining of the system pressure detection result according to the system pressure value fed back by the TCU comprises:
and judging whether the received system pressure value is within a preset range value of the system pressure, if so, outputting that the system pressure detection is passed, and if not, outputting that the system pressure detection is not passed.
5. The offline detection and self-calibration method for the gearbox according to claim 2, wherein the obtaining of the detection result of the rotating speed value of the output shaft of the gearbox according to the rotating speed value of the output shaft of the gearbox fed back by the TCU comprises:
and judging whether the difference value between the rotating speed value of the output shaft of the gearbox and the rotating speed value of the loading motor is within a preset range value, if so, outputting that the rotating speed sensor of the output shaft of the gearbox passes the detection, and if not, outputting that the rotating speed sensor of the output shaft of the gearbox does not pass the detection.
6. The gearbox offline detection and self-calibration method according to claim 2, wherein the sending of the torque converter output speed sensor detection instruction and the obtaining of the torque converter output speed detection result according to the gearbox output shaft speed value and the torque converter output speed value fed back by the TCU comprise:
sending a detection instruction of a hydraulic torque converter output speed sensor, and controlling a gearbox to enter a preset gear;
and judging whether the product of the preset gear ratio of the gearbox and the rotating speed value of the output shaft of the gearbox and the difference value of the output rotating speed value of the hydraulic torque converter are within a preset range value, if so, outputting the detection of the output rotating speed sensor of the hydraulic torque converter to pass, and if not, outputting the detection of the output rotating speed sensor of the hydraulic torque converter to not pass.
7. The gearbox offline detection and self-calibration method according to claim 2, wherein the obtaining of the detection result of the oil temperature at the outlet of the hydraulic torque converter according to the oil temperature value at the outlet of the hydraulic torque converter fed back by the TCU comprises:
and judging whether the received numerical value of the outlet oil temperature of the hydraulic torque converter is within a preset range value of the outlet oil temperature, if so, outputting the detection of the outlet oil temperature sensor of the hydraulic torque converter to pass, and if not, outputting the detection of the outlet oil temperature sensor of the hydraulic torque converter to not pass.
8. The method for offline detection and self-calibration of a transmission according to claim 2, wherein the sending of the sequential upshift and downshift detection command and the obtaining of the sequential upshift and downshift detection result according to the gear position value, the transmission output shaft rotation speed value and the torque converter output rotation speed value fed back by the TCU comprises:
sending a sequential up-down shift detection instruction, and controlling a gearbox to switch gears according to a preset sequence;
and acquiring a gearbox gear speed ratio according to the rotating speed value of the output shaft of the gearbox and the output rotating speed value of the hydraulic torque converter, and judging whether the difference value of the gearbox gear speed ratio and a preset gearbox gear speed ratio is in a preset range, if so, passing the detection of the output gear speed ratio, and if not, failing to pass the detection of the output gear speed ratio.
9. The gearbox offline detection and self-calibration method according to claim 1, wherein the step of sending a self-calibration command to the TCU and the step of obtaining a self-calibration result according to self-calibration information fed back by the TCU comprises the following steps:
sending a clutch semi-joint pressure calibration instruction, and acquiring a clutch semi-joint pressure calibration result according to a final calibration pressure value fed back by the TCU;
and after a clutch half-combination pressure calibration result is obtained, a clutch quick oil filling time calibration instruction is sent, and a clutch quick oil filling time calibration result is obtained according to a final calibration time value fed back by the TCU.
10. The method of gearbox offline detection and self-calibration according to claim 9, wherein said obtaining clutch half-engagement pressure calibration results comprises:
controlling the clutch to be calibrated to be combined and filled with oil, and increasing the half-combination-point oil filling pressure of the clutch to be calibrated until the half-combination-point oil filling pressure of the clutch enables the rotating speed change value of the turbine to be larger than the preset rotating speed change value of the turbine, so that the current half-combination-point oil filling pressure is the half-combination pressure of the clutch;
and repeating the steps until the half-combination pressure of all the clutches is obtained.
11. The gearbox offline detection and self-calibration method according to claim 9, wherein said obtaining a clutch fast fill time calibration result comprises:
controlling the clutch to be calibrated to be combined, and increasing the quick oil filling time of the clutch to be calibrated until the quick oil filling time enables the rotating speed change value of the turbine to be larger than the preset rotating speed change value of the turbine, wherein the current oil filling time T1 is the quick oil filling time of the clutch;
and repeating the steps until the quick oil filling time of all the clutches is obtained.
12. The method of gearbox offline detection and self-calibration according to claim 9, further comprising, before the step of sending a clutch half-engagement pressure calibration command:
and sending a hydraulic torque converter outlet oil temperature detection instruction, judging whether the received hydraulic torque converter outlet oil temperature value is greater than an oil temperature preset value, if so, outputting the self-calibrated oil temperature to meet the requirement, and if not, heating the hydraulic torque converter outlet oil temperature value until the current outlet oil temperature value is greater than the oil temperature preset value.
13. An off-line detection and self-calibration system for a gearbox, comprising an upper computer, wherein the upper computer comprises a memory and a processor, the memory is used for storing instructions, and the instructions are used for controlling the processor to operate so as to execute the off-line detection and self-calibration method for the gearbox according to any one of claims 1 to 12.
14. The gearbox offline detection and self-calibration system according to claim 13, further comprising a TCU, wherein the TCU is in bidirectional communication with the upper computer through a CAN communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210164336.6A CN114235395B (en) | 2022-02-23 | 2022-02-23 | Gearbox offline detection and self-calibration method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210164336.6A CN114235395B (en) | 2022-02-23 | 2022-02-23 | Gearbox offline detection and self-calibration method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114235395A true CN114235395A (en) | 2022-03-25 |
| CN114235395B CN114235395B (en) | 2023-02-03 |
Family
ID=80747717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210164336.6A Active CN114235395B (en) | 2022-02-23 | 2022-02-23 | Gearbox offline detection and self-calibration method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114235395B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467970A (en) * | 2022-09-21 | 2022-12-13 | 山推(德州)工程机械有限公司 | Monitoring method and system for engineering machinery electric control gearbox |
| CN116224201A (en) * | 2023-05-09 | 2023-06-06 | 苏州清研精准汽车科技有限公司 | Diagnosis test method and device for battery pack offline detection equipment and diagnosis equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305713A (en) * | 2011-05-24 | 2012-01-04 | 重庆和平自动化工程有限公司 | Online test device for automated mechanical transmission (AMT) |
| CN103946598A (en) * | 2011-11-17 | 2014-07-23 | 加特可株式会社 | Automatic transmission and method for determining selection operation of automatic transmission |
| CN104181851A (en) * | 2014-08-19 | 2014-12-03 | 盛瑞传动股份有限公司 | Automatic testing method and system of automatic speed changer |
| CN108982098A (en) * | 2018-06-28 | 2018-12-11 | 哈尔滨理工大学 | Gearbox on-line checking testing stand and detection method |
-
2022
- 2022-02-23 CN CN202210164336.6A patent/CN114235395B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305713A (en) * | 2011-05-24 | 2012-01-04 | 重庆和平自动化工程有限公司 | Online test device for automated mechanical transmission (AMT) |
| CN103946598A (en) * | 2011-11-17 | 2014-07-23 | 加特可株式会社 | Automatic transmission and method for determining selection operation of automatic transmission |
| CN104181851A (en) * | 2014-08-19 | 2014-12-03 | 盛瑞传动股份有限公司 | Automatic testing method and system of automatic speed changer |
| CN108982098A (en) * | 2018-06-28 | 2018-12-11 | 哈尔滨理工大学 | Gearbox on-line checking testing stand and detection method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467970A (en) * | 2022-09-21 | 2022-12-13 | 山推(德州)工程机械有限公司 | Monitoring method and system for engineering machinery electric control gearbox |
| CN116224201A (en) * | 2023-05-09 | 2023-06-06 | 苏州清研精准汽车科技有限公司 | Diagnosis test method and device for battery pack offline detection equipment and diagnosis equipment |
| CN116224201B (en) * | 2023-05-09 | 2023-08-04 | 苏州清研精准汽车科技有限公司 | Diagnosis test method and device for battery pack offline detection equipment and diagnosis equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114235395B (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114235395B (en) | Gearbox offline detection and self-calibration method and system | |
| CN105276162A (en) | Apparatus for detecting abnormal hydraulic pressure of automatic transmission | |
| CN105937617B (en) | Synchronizer pitches position control | |
| CN110296213B (en) | Gear shifting torque compensation method and system of hybrid system | |
| US20080215213A1 (en) | Method and Device For Determining the Synchronous Force When Shifting a Twin Clutch Transmission of a Motor Vehicle | |
| CN105276167A (en) | Automatic transmission failure determination apparatus | |
| US8290670B2 (en) | Clutch control device and clutch control method | |
| CN113442895B (en) | Power downshift control method and system for loader | |
| CN104019221B (en) | Using the downshift control method of the output torque of detection | |
| CN104121356A (en) | Hydraulic automatic gearbox gear-shifting control method and system | |
| KR20140044673A (en) | System and method for controlling hydraulic pressure of damper clutch | |
| KR101068199B1 (en) | Transmission control device for working machine | |
| CN100357638C (en) | Method of detecting false neutral in a transmission system | |
| CN103723142B (en) | Startup control method and the electric automobile of pure electric automobile | |
| CN113513585B (en) | Self-calibration method and system for engineering machinery gearbox under complete machine condition | |
| CN102574522A (en) | Device and method for performing a gear change of a vehicle | |
| US7219782B2 (en) | Device and method for detection of a gear position in an automotive gearbox | |
| CN104033255A (en) | Systems and methods for maintaining a substantially stable engine idle speed after a garage shift | |
| CN105276166A (en) | Automatic transmission control apparatus | |
| CN113531109A (en) | Active synchronous type gear shifting control method and system and automobile | |
| JP2879565B2 (en) | Transmission system abnormality detection device | |
| JP6938096B2 (en) | Control device for automatic transmission | |
| CN105972121A (en) | Method for acquiring gear-shifting request of automobile driver and device using the same | |
| EP3204274B1 (en) | A method to control a powertrain in a vehicle | |
| CN103307270B (en) | For controlling the speed changer of open out impact property and using its vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |