System and method for testing torque transmission capability of clutch in hybrid transmission

Abstract

The invention provides a system and method for testing the torque transmission capacity of a clutch in a hybrid transmission. The system comprises a first driving unit, a second driving unit, a measuring unit, a first control unit, a second control unit, a third control unit, an oil temperature adjusting unit and a master control unit. By controlling the first control unit, the second control unit, the third control unit and the oil temperature adjusting unit and receiving measurement parameters of the first control unit, the torque transmission capacity of the clutch in the hybrid transmission is tested. Through the system, the effect of rapidly and accurately testing the torque transmission capability of the clutch in the hybrid transmission can be achieved.

Description

Technical Field

[0001] The present application relates to the field of testing the torque transmission capability of a clutch, and in particular, to a system and method for testing the torque transmission capability of a clutch in a hybrid transmission. Background Art

[0002] In the existing clutch torque transmission capacity test system, different industrial computers and control systems are used to control the test conditions such as the clutch engagement pressure of the hybrid transmission product and the motor speed, torque and other parameters of the test bench. Communication is carried out through communication methods such as the CAN (control area network bus) communication protocol. The existing clutch torque transmission capacity test device requires a three-motor test bench to test the torque transmission capacity of the hybrid transmission, where the first dynamometer simulates the engine and the other two dynamometers simulate the wheel-end load to test the clutch torque transmission capacity. Existing clutch torque transmission capacity test method: In the existing technology, the torque transmission capacity test of the hybrid transmission is mostly carried out at the component level during the development stage.

[0003] When testing the torque transmission capacity of the above-mentioned existing clutch, when the transmission product is replaced, the communication protocol changes, and the relevant parameters need to be reconfigured. The learning cost and workload are high, the test bench cost is high, and the test environment construction process is relatively complicated, resulting in inaccurate testing.

[0004] Therefore, how to quickly and accurately test the torque transmission capability of the clutch in the hybrid transmission is a technical problem that needs to be solved. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a system for testing the torque transmission capacity of the clutch in a hybrid transmission. Through the technical solutions of the embodiments of the present application, the effect of quickly and accurately testing the torque transmission capacity of the clutch in the hybrid transmission can be achieved.

[0006] In a first aspect, an embodiment of the present application provides a system for testing the torque transmission capacity of a clutch in a hybrid transmission, comprising a first drive unit, a second drive unit, a measuring unit, a first control unit, a second control unit, a third control unit, an oil temperature regulating unit, and a master control unit; the first drive unit is used to simulate the engine providing power to the hybrid transmission; the second drive unit is used to simulate the drive motor providing power to the hybrid transmission; the measuring unit is used to measure the measurement parameters transmitted to the hybrid transmission clutch by the first drive unit, and feed the measurement parameters back to the first control unit, wherein the measurement parameters include torque, pressure, speed, speed difference, and other parameters input to the hybrid transmission clutch. and at least one of the oil temperature of the hybrid transmission clutch; a first control unit: used to control the first drive unit, receive the measurement parameters sent by the measuring unit, and feed back the measurement parameters to the main control unit; a second control unit: used to control the drive of the second drive unit; an oil temperature regulating unit: used to regulate the oil temperature of the hybrid transmission; a third control unit: used to control the core components of the hybrid transmission, wherein the core components include a clutch and an electric pump; the main control unit is used to: control the first control unit, the second control unit, the third control unit and the oil temperature regulating unit, and test the torque transmission capacity of the clutch in the hybrid transmission by receiving the measurement parameters of the first control unit.

[0007] In the above-mentioned embodiment of the present application, a system for testing the torque transmission capability of the clutch in the hybrid transmission can realize clutch testing and control in the hybrid transmission by only building a test environment, and realize clutch torque transmission capability testing at the transmission assembly level. At the same time, temperature adjustment and power support can be performed through the control of different units, so as to achieve the effect of realizing the process of quickly and accurately testing the torque transmission capability of the clutch in the hybrid transmission.

[0008] In some embodiments, the main control unit includes: a parameter setting module, a condition judgment module, a working condition execution module and an alarm protection module; the parameter setting module is used to set the parameters required during the test for the first control unit, the second control unit, the third control unit and the oil temperature adjustment unit; the condition judgment module is used to judge whether the current measured parameters meet the required parameters, wherein when the current measured parameters meet the required parameters, the hybrid transmission clutch is tested, and when the current measured parameters do not meet the required parameters, the current measured parameters are adjusted; the working condition execution module is used to control the first control unit, the second control unit, the third control unit and the oil temperature adjustment unit according to the required parameters; the alarm protection module is used to monitor the previous measured parameters and issue an alarm when the current measured parameters do not meet the required parameters.

[0009] In some embodiments, the temperature regulation unit is specifically configured to:

[0010] Control the oil temperature of the hybrid transmission to operate within a preset oil temperature range.

[0011] In a second aspect, an embodiment of the present application provides a method for testing the torque transmission capacity of a clutch in a hybrid transmission, comprising: determining test parameters of the hybrid transmission clutch to be tested, wherein the test parameters include static test parameters and dynamic test parameters; and performing a torque transmission capacity test on the hybrid transmission clutch to be tested using the test parameters.

[0012] In the above-mentioned embodiment of the present application, by testing the torque transmission capability of the clutch in the hybrid transmission, only one test environment is required to be built to realize the clutch testing and control in the hybrid transmission. By determining the test parameters of the hybrid transmission clutch to be tested, the clutch torque transmission capability test at the transmission assembly level is realized, thereby achieving the effect of realizing the process of quickly and accurately testing the torque transmission capability of the clutch in the hybrid transmission.

[0013] In some embodiments, the torque transmission capacity of the hybrid transmission clutch to be tested is tested using test parameters, including: combining one or more parameters in the test parameters to obtain multiple combined parameters; testing the torque transmission capacity of the hybrid transmission clutch to be tested according to the multiple combined parameters, and reading relevant values ​​of the hybrid transmission clutch to be tested during the test process; and determining the test results based on the relevant values.

[0014] In the above embodiment of the present application, the torque transmission capacity test of the hybrid transmission clutch to be tested is performed by combining data, which can realize the diversification of the test and achieve the effect of accurately testing the torque transmission capacity of the hybrid transmission clutch to be tested.

[0015] In some embodiments, determining test parameters of a hybrid transmission clutch to be tested includes setting test parameters according to product verification requirements, wherein the test parameters include at least one of a hybrid transmission clutch speed, a speed difference, a pressure, an oil temperature, and a pressure maintenance time.

[0016] In the above embodiment of the present application, the relevant parameters of the hybrid transmission clutch to be tested can be adjusted by setting the test parameters, so as to achieve the effect of accurately testing the torque transmission capacity of the hybrid transmission clutch to be tested.

[0017] In a third aspect, an embodiment of the present application provides a device for testing the torque transmission capability of a clutch in a hybrid transmission, comprising:

[0018] a determination module, configured to determine test parameters of the hybrid transmission clutch to be tested, wherein the test parameters include static test parameters and dynamic test parameters;

[0019] The test module is used to test the torque transmission capability of the hybrid transmission clutch to be tested through test parameters.

[0020] Optionally, the test module is specifically used to:

[0021] Combining one or more parameters in the test parameters to obtain multiple combined parameters;

[0022] Testing the transmission torque capability of the hybrid transmission clutch to be tested according to multiple combination parameters, and reading relevant values ​​of the hybrid transmission clutch to be tested during the test process;

[0023] Determine the test results based on the relevant values.

[0024] Optionally, determine whether the module is specifically used for:

[0025] According to product verification requirements, test parameters are set, wherein the test parameters include at least one of a hybrid transmission clutch speed, a speed difference, a pressure, an oil temperature, and a pressure maintenance time.

[0026] In a fourth aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory, wherein the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the steps of the method provided in the first aspect above are executed.

[0027] In a fifth aspect, an embodiment of the present application provides a readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps in the method provided in the first aspect above are executed.

[0028] Other features and advantages of the present application will be described in the following description and, in part, will become apparent from the description or be understood by practicing the embodiments of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of the structure of a system for testing the torque transmission capability of a clutch in a hybrid transmission provided by an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the structure of a master control unit provided in an embodiment of the present application;

[0032] Figure 3 A flow chart of a method for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application;

[0033] Figure 4 A schematic block diagram of a device for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application;

[0034] Figure 5 A schematic structural diagram of a device for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0037] First, some of the terms involved in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0038] Torque is a special type of force that causes an object to rotate. Engine torque refers to the torque output from the crankshaft. Under constant power conditions, it is inversely proportional to engine speed: faster speeds result in lower torque, and vice versa. It reflects a vehicle's load capacity within a certain range. External torque is called torque or external moment, while internal torque is called internal moment or torque.

[0039] The Controller Area Network (CAN) is a serial communication protocol bus designed for real-time applications. It uses twisted-pair wiring for signal transmission and is one of the world's most widely used fieldbuses. The CAN protocol is used for communication between various components in automobiles, replacing expensive and bulky distribution wiring harnesses. The robustness of the protocol has extended its use to other automation and industrial applications. Features of the CAN protocol include complete serial data communication, real-time support, transmission rates up to 1 Mb / s, 11-bit addressing, and error detection.

[0040] Modbus is a serial communications protocol developed by Modicon (now Schneider Electric) in 1979 for programmable logic controller (PLC) communication. Modbus has become the de facto standard for industrial communications protocols and is now a common method for connecting industrial electronic equipment.

[0041] CANape is a measurement, calibration, and diagnostic system specifically designed for electronic control units (ECUs). Part of ASAM-MC (formerly ASAP), it provides comprehensive tools for the development, diagnosis, and calibration of electronic devices. CANape's main components include online measurement, offline analysis, diagnostics, printer functionality, data management, flash programming, calibration, CDM Studio, and a device database editor.

[0042] Python is an interpreted, object-oriented, dynamically typed, high-level programming language.

[0043] The Call-Executable function is a step type used to call an executable file. It provides a more powerful interface for calling common scripting languages ​​such as Python, Perl, and Tcl.

[0044] The CANScope Bus Analyzer is a comprehensive professional tool for CAN bus development and testing, integrating multiple functions such as a mass storage oscilloscope, network analyzer, bit error rate analyzer, protocol analyzer, and reliability testing tools. By organically integrating and linking these instruments, it redefines CAN bus development and testing methods.

[0045] This application is applied to the scenario of testing the torque transmission capability of the clutch. The specific scenario is to provide a test system to realize the same-platform control of the hybrid transmission and the test equipment, and to perform the torque transmission capability test on the hybrid transmission assembly only through a dynamometer.

[0046] However, existing clutch torque capacity testing systems use different industrial computers and control systems to control test conditions such as the clutch engagement pressure of hybrid transmission products and parameters such as the motor speed and torque of the test bench, communicating via communication methods such as the CAN (Control Area Network) protocol. Existing clutch torque capacity testing devices require a three-motor test bench to test the torque capacity of hybrid transmissions, with the first dynamometer simulating the engine and the other two dynamometers simulating wheel-end loads for clutch torque capacity testing. Existing clutch torque capacity testing methods: Existing technologies often test the torque capacity of hybrid transmissions at the component level during the development phase. When the transmission product is replaced during the existing clutch torque capacity test, the communication protocol changes, requiring reconfiguration of relevant parameters. This requires significant learning and workload, high test bench costs, and a relatively complex test environment setup process, resulting in inaccurate tests.

[0047] To this end, the present application provides a system for testing the torque transmission capacity of a clutch in a hybrid transmission, comprising a first drive unit, a second drive unit, a measuring unit, a first control unit, a second control unit, a third control unit, an oil temperature regulating unit, and a master control unit. The first drive unit is configured to simulate an engine providing power to the hybrid transmission. The second drive unit is configured to simulate a drive motor providing power to the hybrid transmission. The measuring unit is configured to measure a measurement parameter transmitted by the first drive unit to the hybrid transmission clutch and feed the measurement parameter back to the first control unit. The measurement parameter includes at least one of torque, pressure, speed, speed difference input to the hybrid transmission clutch, and oil temperature of the hybrid transmission clutch. The first control unit is configured to control the first drive unit, receive the measurement parameter transmitted by the measuring unit, and feed the measurement parameter back to the master control unit. The second control unit is configured to control the driving of the second drive unit. The oil temperature regulating unit is configured to regulate the oil temperature of the hybrid transmission. The third control unit is configured to control core components of the hybrid transmission, including the clutch and the electric pump. The master control unit is configured to control the first control unit, the second control unit, the third control unit, and the oil temperature regulating unit, and test the torque transmission capacity of the clutch in the hybrid transmission by receiving the measurement parameter from the first control unit. By testing the system for the torque transmission capability of the clutch in the hybrid transmission, it is possible to build only one test environment to implement clutch testing and control in the hybrid transmission, and to achieve clutch torque transmission capability testing at the transmission assembly level. At the same time, temperature adjustment and power support can be performed through the control of different units, thereby achieving the effect of quickly and accurately testing the torque transmission capability of the clutch in the hybrid transmission.

[0048] In the embodiment of the present application, the executing entity may be a device for testing the clutch torque transmission capacity of a hybrid transmission in a system for testing the clutch torque transmission capacity of a hybrid transmission. In actual applications, the device for testing the clutch torque transmission capacity of a hybrid transmission may be an electronic device such as a terminal device and a server, and no limitation is imposed here.

[0049] The following combination Figure 1 A method for testing the torque transmission capability of a clutch in a hybrid transmission according to an embodiment of the present application is described in detail.

[0050] Please see Figure 1 , Figure 1 This is a schematic diagram of a system for testing the torque transmission capability of a clutch in a hybrid transmission provided by an embodiment of the present application. Figure 1 The system shown for testing the torque transfer capability of a clutch in a hybrid transmission includes:

[0051] A first drive unit 110, a second drive unit 120, a measuring unit 130, a first control unit 140, a second control unit 150, a third control unit 160, an oil temperature regulating unit 170 and a main control unit 180; the first drive unit 110 is used to simulate the engine providing power to the hybrid transmission; the second drive unit 120 is used to simulate the drive motor providing power to the hybrid transmission; the measuring unit 130 is used to measure the measurement parameters transmitted by the first drive unit 110 to the hybrid transmission clutch 190, and feed the measurement parameters back to the first control unit 140, wherein the measurement parameters include at least one of the torque, pressure, speed, speed difference and oil temperature of the hybrid transmission clutch 190 input to the hybrid transmission clutch 190 ; The first control unit 140 is used to control the first drive unit 110, receive the measurement parameters sent by the measurement unit 130, and feed back the measurement parameters to the main control unit 180; the second control unit 150 is used to control the drive of the second drive unit 120; the oil temperature regulating unit 170 is used to regulate the oil temperature of the hybrid transmission; the third control unit 160 is used to control the core components of the hybrid transmission, wherein the core components include the clutch and the electric pump; the main control unit 180 is used to: control the first control unit 140, the second control unit 150, the third control unit 160 and the oil temperature regulating unit 170, and test the torque transmission capacity of the clutch in the hybrid transmission by receiving the measurement parameters of the first control unit 140.

[0052] The system also includes a hybrid transmission clutch 190. The first drive unit 110 can be a dynamometer for testing equipment, and the second drive unit 120 can be a hybrid transmission drive motor. By combining the hybrid transmission hydraulic system and temperature control unit on the same platform, the torque transmission capacity of the hybrid transmission clutch can be tested.

[0053] Specifically, in this test system, a first drive unit 110 simulates an engine to power the hybrid transmission. A measurement unit 130 is connected to the hybrid transmission. This unit measures the torque, speed, and oil temperature of the hybrid transmission input from the first drive unit 110, and feeds the measurement results back to a first control unit 140. The first control unit 140 controls the first drive unit 110 and communicates with a master control unit 180. The drive unit simulates the hybrid transmission's drive motor to power the hybrid transmission. A second control unit 150 controls the second drive unit 120 and communicates with the master control unit 180. The master control unit 180 coordinates control of the two drive units to simulate the test conditions of the hybrid transmission sample. The system also includes an oil temperature regulation unit 170, which regulates the hybrid transmission oil temperature to enable testing in low-temperature environments. The oil temperature regulation unit 170 communicates with the master control unit 180. The system includes a third control unit 160 , which is used to control core components such as the clutch and electric pump inside the hybrid transmission. The third control unit 160 is connected to the hybrid transmission and communicates with the main control unit 180 .

[0054] For example, in this test system, the first drive unit 110 can be a dynamometer and inverter, simulating the hybrid transmission engine's power. A measurement unit 130 is connected to the hybrid transmission. This measurement unit 130 includes a torque and speed sensor to measure the torque and speed input to the hybrid transmission from the first drive unit 110. It also includes a temperature measurement system to measure the hybrid transmission oil temperature and feed the measurement results back to the first control unit 140. The first control unit 140 can be a Siemens S7-200smart equipped with an analog acquisition module. The first control unit 140 controls the first drive unit 110 via Modbus communication and communicates with the main control unit 180 via Ethernet. The second drive unit 120 uses the hybrid transmission's own drive motor to provide power. The second control unit 150 can control the second drive unit 120 using the hybrid transmission's own drive motor controller and communicate with the main control unit 180 via CAN communication. The main control unit 180 coordinates and controls the two drive units to simulate the hybrid transmission's test conditions.

[0055] For another example, the system includes an oil temperature control unit 170 that regulates the hybrid transmission oil temperature. This unit communicates with the main control unit 180. The oil temperature control unit 170 can use an environmental chamber, into which the hybrid transmission sample under test is placed. The temperature of the hybrid transmission oil is controlled using the ambient temperature within the chamber. The environmental chamber controller and the main control unit 180 can communicate via Modbus to set the ambient temperature and thereby control the oil temperature. The oil temperature control unit 170 can also use a low-temperature water cooling unit. The cooling unit is connected to the hybrid transmission coolant inlet and outlet to control the hybrid transmission oil temperature. The low-temperature water cooling unit controller and the main control unit 180 can communicate via Modbus to set the coolant temperature at the low-temperature water cooling unit outlet and thereby control the oil temperature. The system includes a third control unit 160. This third control unit 160 utilizes the hybrid transmission's hydraulic system controller and is used to control core components within the hybrid transmission, such as the clutch and electric pump. The third control unit 160 can communicate with the main control unit 180 via CAN communication.

[0056] In some embodiments of this application, please refer to Figure 2 , Figure 2 A schematic diagram of the structure of a master control unit 180 provided in an embodiment of the present application is shown in FIG. Figure 2 The main control unit 180 shown includes:

[0057] Parameter setting module 210, condition judgment module 220, working condition execution module 230 and alarm protection module 240; parameter setting module 210 is used to set the parameters required during the test process for the first control unit 140, the second control unit 150, the third control unit 160 and the oil temperature adjustment unit 170; the condition judgment module 220 is used to judge whether the current measured parameters meet the required parameters, wherein when the current measured parameters meet the required parameters, the hybrid transmission clutch 190 is tested, and when the current measured parameters do not meet the required parameters, the current measured parameters are adjusted; the working condition execution module 230 is used to control the first control unit 140, the second control unit 150, the third control unit 160 and the oil temperature adjustment unit 170 according to the required parameters; the alarm protection module 240 is used to monitor the previous measured parameters and issue an alarm when the current measured parameters do not meet the required parameters.

[0058] Specifically, the master control unit 180 uses an industrial computer and is installed with CANape and Python software to control different units.

[0059] For example, to control the first drive unit 110, Python scripts can be written to communicate with Siemens via Ethernet, enabling different scripts to implement operations such as starting and stopping the dynamometer and setting the speed. These Python scripts can be assigned and called using the CallExecutable function in CANape, enabling CANape control of the dynamometer. To control the second drive unit 120, Cancase can be used as a CAN analyzer to enable communication between the industrial computer's CANape and the hybrid transmission's drive motor controller. To control the third drive unit, Cancase can be used as a CAN analyzer to enable communication between the industrial computer's CANape and the hybrid transmission's hydraulic system controller. To control the oil temperature control unit 170, Python scripts can be written to communicate with the unit's controller via Modbus, enabling different scripts to implement operations such as starting and stopping the unit and setting the temperature. These Python scripts can be assigned and called using the CallExecutable function in CANape, enabling CANape control of the hybrid transmission's oil temperature.

[0060] Optionally, the main control unit 180 can also collect data while controlling each component. The first control unit 140 can enable the measurement unit 130 to collect and record the torque, speed, and oil temperature of the first drive unit 110; the second control unit 150 can enable the collection and recording of parameters such as the speed and torque of the second drive unit 120; and the third control unit 160 can enable the collection and recording of its own parameters such as the transmission clutch pressure and clutch speed.

[0061] Optionally, the applications of each module in the master control unit 180 are as follows:

[0062] The parameter setting module 210 can define the control parameters such as the speed or torque of the first drive unit 110, the speed of the second drive unit 120, and the oil temperature target value as variables through the script writing function of CANape. The hybrid transmission online calibration function can be used to set the control parameters such as the hybrid transmission drive motor speed, clutch pressure, and lubrication flow. The target oil temperature, dynamometer speed and other test equipment parameters can be set by calling Python scripts, and the dynamometer speed, clutch pressure and other parameters can be collected and recorded at the same time. The condition judgment module 220 can be used through CANape scripts. The variables of the various parameter setting values ​​mentioned above are compared with the measured values. If the set conditions are met, the operating condition execution module 230 is entered. If not, the parameters are adjusted or waiting is performed until the set conditions are met. The operating condition execution module 230 can write scripts through CANape to control the hybrid transmission and test equipment according to the test requirements after the test conditions are met, and complete the test. The alarm protection module 240 sets alarm limits for various control parameters and compares the measured values ​​with the alarm limits. If the measured values ​​exceed the alarm limit range, the internal operation of the hybrid transmission and the operation of the test equipment are stopped.

[0063] In some embodiments of the present application, the temperature adjustment unit is specifically used to:

[0064] Control the oil temperature of the hybrid transmission to operate within a preset oil temperature range.

[0065] Among them, the preset oil temperature range can be set according to demand, and is generally set to a low temperature environment suitable for clutch operation.

[0066] In the above Figure 1In the system shown, the present application provides a system for testing the torque transmission capacity of the clutch in the hybrid transmission, including a first drive unit 110, a second drive unit 120, a measuring unit 130, a first control unit 140, a second control unit 150, a third control unit 160, an oil temperature regulating unit 170 and a main control unit 180; the first drive unit 110 is used to simulate the engine providing power to the hybrid transmission; the second drive unit 120 is used to simulate the drive motor providing power to the hybrid transmission; the measuring unit 130 is used to measure the measurement parameters transmitted by the first drive unit 110 to the hybrid transmission clutch 190, and feed the measurement parameters back to the first control unit 140, wherein the measurement parameters include torque, pressure, speed, speed difference and input to the hybrid transmission clutch 190 The system comprises a first control unit 140 for controlling the first drive unit 110, receiving the measurement parameters sent by the measurement unit 130, and feeding the measurement parameters back to the master control unit 180; a second control unit 150 for controlling the driving of the second drive unit 120; an oil temperature regulating unit 170 for regulating the oil temperature of the hybrid transmission; and a third control unit 160 for controlling the core components of the hybrid transmission, including the clutch and the electric pump. The master control unit 180 is configured to control the first control unit 140, the second control unit 150, the third control unit 160, and the oil temperature regulating unit 170, and to test the torque transmission capacity of the hybrid transmission clutch by receiving the measurement parameters from the first control unit 140. The system for testing the torque transmission capacity of the hybrid transmission clutch can be used to build a single test environment to test and control the hybrid transmission clutch, enabling clutch torque transmission capacity testing at the transmission assembly level. Furthermore, temperature regulation and power support can be performed through the control of different units, achieving rapid and accurate testing of the torque transmission capacity of the hybrid transmission clutch.

[0067] The following combination Figure 3 The implementation method of testing the torque transmission capacity of the clutch in the hybrid transmission according to the embodiment of the present application is described in detail.

[0068] Please see Figure 3 , Figure 3 This is a flow chart of a method for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application, as shown in FIG. Figure 3 The method shown for testing the torque transfer capability of a clutch in a hybrid transmission includes:

[0069] Step 310: Determine test parameters of the hybrid transmission clutch to be tested.

[0070] The test parameters include static test parameters and dynamic test parameters.

[0071] In some embodiments of the present application, determining the test parameters of the hybrid transmission clutch to be tested includes: setting the test parameters according to product verification requirements, wherein the test parameters include at least one of the hybrid transmission clutch speed, speed difference, pressure, oil temperature and pressure maintenance time.

[0072] In the above process, the present application can adjust the relevant parameters of the hybrid transmission clutch to be tested by setting the test parameters, so as to achieve the effect of accurately testing the torque transmission capacity of the hybrid transmission clutch to be tested.

[0073] Among them, product verification requirements can be set according to system verification needs.

[0074] Step 320: Perform a torque transmission capability test on the hybrid transmission clutch to be tested using the test parameters.

[0075] The torque transmission capability test of the hybrid transmission clutch to be tested can be carried out using two test methods: static and dynamic torque transmission. The specific test methods are as follows:

[0076] Based on the pre-set product verification requirements, clutch torque test parameters such as clutch speed difference, clutch pressure, oil temperature, and clutch pressure hold time are determined. Based on the actual test requirements and the hybrid transmission speed ratio, the clutch speed difference is decomposed into the first and second drive unit speeds. Depending on the test requirements, multiple parameters such as clutch speed difference, clutch pressure, and oil temperature may exist, i.e., multiple combinations of speed differences, clutch pressures, and oil temperatures. Using the scripting function in CANape within the master control system, the torque test system test conditions are set according to various test parameters, controlling the test oil temperature and the speeds of the first and second drive units. When the actual measured value reaches the set value, the clutch pressure is set, the hold time, and then the clutch pressure is set. Parameters such as clutch pressure, clutch torque, and oil temperature are recorded during the test, and the dynamic clutch torque values ​​at each operating point are read to implement dynamic testing.

[0077] Based on the pre-set product verification requirements, clutch torque test parameters such as clutch active end speed, clutch pressure, and oil temperature are determined. Based on the actual test requirements and the hybrid transmission speed ratio, the clutch active end speed is converted to the second drive unit speed. Depending on the test requirements, multiple parameters such as clutch active end speed, clutch pressure, and oil temperature may exist. Using the scripting function in CANape within the master control system, the torque test system test conditions are set according to the test parameters. The test oil temperature is controlled to , and the second drive unit speed is controlled. When the actual measured value reaches the set value, the clutch pressure is set to , and the first drive unit is controlled to slowly increase its output torque at a preset rate (e.g., 1 Nm / s) until relative slip occurs between the clutch active and driven ends. The first drive unit output torque at this point is recorded, which is the static torque value of the clutch pressure. The first drive unit output torque and clutch pressure are then set. The clutch pressure, clutch torque, oil temperature, and other parameters are recorded during the test. The clutch torque values ​​at each operating point are read to achieve dynamic testing.

[0078] In some embodiments of the present application, the torque transmission capacity of the hybrid transmission clutch to be tested is tested using test parameters, including: combining one or more parameters in the test parameters to obtain multiple combined parameters; performing the torque transmission capacity test on the hybrid transmission clutch to be tested according to the multiple combined parameters, and reading relevant values ​​of the hybrid transmission clutch to be tested during the test process; and determining the test results based on the relevant values.

[0079] In the above process, the present application tests the torque transmission capability of the hybrid transmission clutch to be tested by combining data, which can realize the diversification of the test and achieve the effect of accurately testing the torque transmission capability of the hybrid transmission clutch to be tested.

[0080] The test results include test parameters and corresponding transmission torque capabilities.

[0081] also, Figure 3 The specific methods and steps shown can be found in Figure 1 The system shown here will not be described in detail.

[0082] In the above Figure 3 In the system shown, the present application can realize clutch testing and control in the hybrid transmission by only building a test environment through the method of testing the torque transmission capacity of the clutch in the hybrid transmission. By determining the test parameters of the hybrid transmission clutch to be tested, the clutch torque transmission capacity test at the transmission assembly level is realized, thereby achieving the effect of realizing a process of quickly and accurately testing the torque transmission capacity of the clutch in the hybrid transmission.

[0083] Previous article passed Figure 3 The method for testing the torque transfer capability of the clutch in the hybrid transmission is described below. Figure 4-Figure 5 Describes an apparatus for testing the torque transfer capability of a clutch in a hybrid transmission.

[0084] Please refer to Figure 4 , is a schematic block diagram of a device 400 for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application. The device 400 may be a module, program segment or code on an electronic device. The device 400 is similar to the above-mentioned Figure 3 The method embodiment corresponds to the embodiment that can be executed Figure 3 The various steps involved in the method embodiment and the specific functions of the device 400 can be found in the description below. To avoid repetition, detailed description is appropriately omitted here.

[0085] Optionally, the device 400 includes:

[0086] A determination module 410 is configured to determine test parameters of the hybrid transmission clutch to be tested, wherein the test parameters include static test parameters and dynamic test parameters;

[0087] The testing module 420 is configured to test the torque transmission capability of the hybrid transmission clutch to be tested using test parameters.

[0088] Optionally, the testing module 420 is specifically configured to:

[0089] One or more parameters in the test parameters are combined to obtain multiple combined parameters; the transmission torque capacity of the hybrid transmission clutch to be tested is tested according to the multiple combined parameters, and relevant values ​​of the hybrid transmission clutch to be tested during the test process are read; and the test results are determined based on the relevant values.

[0090] Optionally, the determining module 410 is specifically configured to:

[0091] According to product verification requirements, test parameters are set, wherein the test parameters include at least one of a hybrid transmission clutch speed, a speed difference, a pressure, an oil temperature, and a pressure maintenance time.

[0092] Please refer to Figure 5 This is a schematic block diagram of a device for testing the torque transmission capability of a clutch in a hybrid transmission provided in an embodiment of the present application. The device may include a memory 510 and a processor 520. Optionally, the device may also include: a communication interface 530 and a communication bus 540. The device is similar to the above-mentioned Figure 3 The method embodiment corresponds to the embodiment that can be executed Figure 3 The various steps involved in the method embodiment and the specific functions of the device can be found in the description below.

[0093] Specifically, the memory 510 is used to store computer-readable instructions.

[0094] Processor 520 is used to process the readable instructions stored in the memory and can execute Figure 3 The steps in the method.

[0095] The communication interface 530 is used for signaling or data communication with other node devices, for example, for communication with a server or terminal, or for communication with other device nodes, but the embodiments of the present application are not limited thereto.

[0096] The communication bus 540 is used to realize direct connection and communication among the above components.

[0097] Among them, the communication interface 530 of the device in the embodiment of the present application is used to communicate signaling or data with other node devices. The memory 510 can be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 510 can also be at least one storage device located away from the aforementioned processor. The memory 510 stores computer-readable instructions. When the computer-readable instructions are executed by the processor 520, the electronic device executes the above-mentioned Figure 3 The method process shown. The processor 520 can be used on the device 400 and is used to perform the functions in the present application. For example, the above-mentioned processor 520 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, but the embodiments of the present application are not limited thereto.

[0098] The embodiment of the present application further provides a readable storage medium, wherein when the computer program is executed by a processor, Figure 3 The method process in the illustrated method embodiment is performed by the electronic device.

[0099] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method, and will not be described in detail here.

[0100] In summary, the embodiment of the present application provides a system and method for testing the torque transmission capacity of a clutch in a hybrid transmission, the system comprising a first drive unit, a second drive unit, a measuring unit, a first control unit, a second control unit, a third control unit, an oil temperature regulating unit and a master control unit; the first drive unit is used to simulate the engine providing power to the hybrid transmission; the second drive unit is used to simulate the drive motor providing power to the hybrid transmission; the measuring unit is used to measure the measurement parameters transmitted by the first drive unit to the hybrid transmission clutch, and feed the measurement parameters back to the first control unit, wherein the measurement parameters include torque, pressure, speed, speed of the input hybrid transmission clutch The system comprises a first control unit for controlling the first drive unit, receiving the measurement parameters sent by the measurement unit, and feeding the measurement parameters back to the master control unit. A second control unit is used to control the driving of the second drive unit. An oil temperature regulation unit is used to regulate the oil temperature of the hybrid transmission. A third control unit is used to control the core components of the hybrid transmission, including the clutch and the electric pump. The master control unit controls the first, second, and third control units, and the oil temperature regulation unit, and receives the measurement parameters from the first control unit to test the torque transmission capacity of the hybrid transmission clutch. This system can achieve the effect of quickly and accurately testing the torque transmission capacity of the hybrid transmission clutch.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0102] In addition, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0103] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0104] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0105] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0106] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A system for testing the torque transmission capability of a clutch in a hybrid transmission, characterized in that: include: A first drive unit, a second drive unit, a measuring unit, a first control unit, a second control unit, a third control unit, an oil temperature regulating unit and a general control unit; The first drive unit is used to simulate the engine to provide power to the hybrid transmission; The second drive unit is used to simulate the drive motor to provide power for the hybrid transmission; The measuring unit is used to measure the measurement parameters transmitted by the first drive unit to the hybrid transmission clutch, and feed the measurement parameters back to the first control unit, wherein the measurement parameters include at least one of the torque, pressure, speed, speed difference input to the hybrid transmission clutch, and the oil temperature of the hybrid transmission clutch; The first control unit is used to control the first driving unit, receive the measurement parameters sent by the measurement unit, and feed back the measurement parameters to the master control unit; The second control unit is used to control the driving of the second driving unit; The oil temperature regulating unit is used to regulate the oil temperature of the hybrid transmission; The third control unit is used to control the core components of the hybrid transmission, wherein the core components include a clutch and an electric pump; The master control unit is used to control the first control unit, the second control unit, the third control unit and the oil temperature regulating unit, and to test the torque transmission capacity of the clutch in the hybrid transmission by receiving the measurement parameters of the first control unit.

2. The system according to claim 1, characterized in that The master control unit comprises: Parameter setting module, condition judgment module, working condition execution module and alarm protection module; The parameter setting module is used to set the parameters required during the test process for the first control unit, the second control unit, the third control unit and the oil temperature adjustment unit; The condition judgment module is used to judge whether the current measured parameters meet the required parameters, wherein when the current measured parameters meet the required parameters, the hybrid transmission clutch is tested, and when the current measured parameters do not meet the required parameters, the current measured parameters are adjusted; The working condition execution module is used to control the first control unit, the second control unit, the third control unit and the oil temperature adjustment unit according to the required parameters; The alarm protection module is used to monitor the previous measured parameters and issue an alarm when the current measured parameters do not meet the required parameters.

3. The system according to claim 1 or 2, characterized in that: The temperature adjustment unit is specifically used for: The oil temperature of the hybrid transmission is controlled to operate within a preset oil temperature range.

4. A method for testing the torque transmission capacity of a clutch in a hybrid transmission, characterized in that: include: Determining test parameters of the hybrid transmission clutch to be tested, wherein the test parameters include static test parameters and dynamic test parameters; The torque transmission capacity of the hybrid transmission clutch to be tested is tested using the test parameters.

5. The method according to claim 4, characterized in that The step of testing the torque transmission capability of the hybrid transmission clutch to be tested by using the test parameters includes: Combining one or more parameters of the test parameters to obtain multiple combined parameters; Performing a torque transmission capacity test on the hybrid transmission clutch to be tested according to the plurality of combined parameters, and reading relevant values ​​of the hybrid transmission clutch to be tested during the test process; The test result is determined according to the relevant numerical value.

6. The method according to claim 4 or 5, characterized in that: The step of determining the test parameters of the hybrid transmission clutch to be tested includes: The test parameters are set according to product verification requirements, wherein the test parameters include at least one of a hybrid transmission clutch speed, a speed difference, a pressure, an oil temperature, and a pressure maintenance time.

7. A device for testing the torque transmission capacity of a clutch in a hybrid transmission, characterized in that ,,include: A determination module, used to determine test parameters of the hybrid transmission clutch to be tested, wherein the test parameters include static test parameters and dynamic test parameters; The test module is used to test the torque transmission capacity of the hybrid transmission clutch to be tested by using the test parameters.

8. The device according to claim 7, characterized in that The test module is specifically used for: Combining one or more parameters of the test parameters to obtain multiple combined parameters; Performing a torque transmission capacity test on the hybrid transmission clutch to be tested according to the plurality of combined parameters, and reading relevant values ​​of the hybrid transmission clutch to be tested during the test process; The test result is determined according to the relevant numerical value.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in the method according to any one of claims 4 to 6 are executed.

10. A computer-readable storage medium, characterized in that: include: A computer program, when the computer program is run on a computer, causes the computer to execute the method according to any one of claims 4 to 6.

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