阅读说明：本技术 一种分离式离合器总成扭转疲劳测试系统及方法 (Torsion fatigue test system and method for separating clutch assembly ) 是由 张磊 严鉴铂 刘义 郭明 程龙 郑乐 李一凡 于 2021-09-22 设计创作，主要内容包括：本发明公开一种分离式离合器总成扭转疲劳测试系统及方法,采用原变速器的控制系统和冷却润滑油路,取消了原变速器后端的行星排齿轮结构,增加了一套单独的液压源,保证了分离式离合器的控制和润滑与装配在变速器中的实际运行边界的一致性；同时,只需一台测功机即可完成分离式离合器总成的扭转疲劳测试；本系统结构简单、设备成本低,测试精度高,使用后可以有效提高系统效率,降低能耗。(The invention discloses a torsion fatigue test system and a method for a separating clutch assembly, which adopts a control system and a cooling and lubricating oil circuit of an original speed changer, cancels a planetary gear structure at the rear end of the original speed changer, adds a set of independent hydraulic source, and ensures the consistency of the control and lubrication of the separating clutch and the actual operation boundary assembled in the speed changer; meanwhile, the torsional fatigue test of the separated clutch assembly can be completed only by one dynamometer; the system has the advantages of simple structure, low equipment cost and high test precision, and can effectively improve the system efficiency and reduce the energy consumption after being used.)

1. The torsion fatigue testing system of the separated clutch assembly is characterized by comprising a control module (1), wherein the control module (1) is respectively connected with a dynamometer (2), a detection device (3), a temperature control system (4), a hydraulic source (5) and a TCU (transmission control unit) controller (6);

the output end of the dynamometer (2) is in transmission connection with a piece to be detected (8), and the detection device (3) is arranged between the dynamometer (2) and the piece to be detected (8);

the output end and the input end of the hydraulic source (5) are respectively connected to the piece to be tested (8) and used for providing stable hydraulic pressure and filtered hydraulic oil for the piece to be tested (8);

the temperature control system (4) is arranged on an output pipeline of the hydraulic source (5);

the TCU controller (6) is used for controlling the action of the piece to be tested (8).

2. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the device under test (8) is secured to the mounting base (7) and an output of the device under test (8) is coupled to the output base (70).

3. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the sensing device (3) includes a torque meter, a rotational speed sensor, an angle sensor.

4. The breakaway clutch assembly torsional fatigue testing system of claim 3, wherein the acquisition outputs of the torquemeter, the speed sensor, and the angle sensor are all connected to the control module (1).

5. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the temperature control system (4) includes a heat exchanger (40) and a flow regulating device (41)

The heat exchanger (40) is arranged on an output pipeline of the hydraulic source (5);

the output end of the flow regulating device (41) is connected into the heat exchanger (40) to provide cooling water and detect the temperature and the pressure of the cooling water.

6. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the piece under test (8) is further interfaced to a detection module (9);

the detection module (9) comprises a voltage type pressure sensor acquisition channel and a temperature acquisition channel.

7. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the outputs of the TCU controller (6) and the detection module (9) are each coupled to a transmission calibration apparatus (10); the transmission calibration device (10) is connected to the control module (1).

8. The breakaway clutch assembly torsional fatigue testing system of claim 1, wherein the TCU controller (6) and the detection module (9) are each connected to a power source (11).

9. A torsional fatigue testing method for a disconnect clutch assembly, based on any one of claims 1-8, comprising the steps of:

s1: adjusting the temperature control system (4) to enable the temperature of the hydraulic oil to be 70-90 ℃, carrying out hot dipping on the piece to be tested (8) and stabilizing the temperature of the piece to be tested, and continuously providing cooling and lubricating flow to the piece to be tested (8) through the temperature control system (4) and the TCU controller (6);

s2: adjusting the pressure of the hydraulic source (5) to be 20bar, so that the part to be detected is closed;

s3: the control module (1) outputs proper loading frequency, so that the input torque of the dynamometer (2) is changed between Tqneg and Tqpos, meanwhile, torque overshoot is avoided, the collected torque curve is ensured to be smooth and have no peak, and the part to be tested (8) is driven to work;

s4: keeping the test of the step S3, if the detection device (3) transmits the abnormal data to the control module (1) to be displayed, the piece to be detected (8) is unqualified; if no abnormal data appear until the estimated running time of the piece to be detected (8), the piece to be detected (8) is qualified.

Technical Field

The invention belongs to the field of fatigue test of test workpieces, and particularly relates to a torsional fatigue test system and method for a separating clutch assembly.

Background

In order to meet the requirement of the oil consumption limit, various manufacturers plan a technical route suitable for the manufacturers, and hybrid power is one of effective ways, so that the hybrid power is valued and looked by vehicle enterprises because the hybrid power has an obvious energy-saving effect and can meet the requirements of the current market and consumers. The P2 hybrid is popular as a strong hybrid solution. Structurally, the P2 configuration requires the addition of an electric machine and disconnect clutch module between the engine and transmission, which can achieve the hybrid effect without major changes. The most central of the whole module is a separating clutch, a motor and a control valve block. The disconnect clutch module plays an important role as an integral part of the P2 module, providing connections and shifts between the engine, electric machine, and transmission. Therefore, it is necessary to study the performance of the disconnect clutch for the performance of the P2 hybrid module. Particularly, under a high-energy working condition, whether the separating clutch has excellent durability or not influences the performance of the whole hybrid transmission.

The existing test equipment does not separately carry out a torsional fatigue test on the separating clutch assembly, and the torsional fatigue test of the separating clutch is inspected by utilizing the existing transmission whole box fatigue life test equipment and carrying out the torsional fatigue test in the transmission assembly when the functionality of the separating clutch is checked. The testing method can not completely reflect the fatigue endurance performance of the separating clutch assembly, and if other parts except the separating clutch assembly fail in the testing process, the testing should be stopped immediately, and the torsion endurance test can be continued after the corresponding parts are replaced again. The test system needs more input equipment, including an input motor, an output motor, a transmission cooling system and the like, the final test result cannot directly reflect the performance of the tested piece, the performance of the separating clutch can only be indirectly confirmed through the investigation of the whole transmission box, and meanwhile, the system is low in efficiency and high in energy consumption.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a system and a method for testing torsional fatigue of a separating clutch assembly.

The invention is realized by the following technical scheme:

the torsion fatigue testing system of the separated clutch assembly is characterized by comprising a control module, wherein the control module is respectively connected with a dynamometer, a detection device, a temperature control system, a hydraulic source and a TCU (transmission control unit) controller;

the output end of the dynamometer is in transmission connection with a piece to be detected, and the detection device is arranged between the dynamometer and the piece to be detected;

the output end and the input end of the hydraulic source are respectively connected to a piece to be tested and used for providing stable hydraulic pressure and filtered hydraulic oil for the piece to be tested;

the temperature control system is arranged on an output pipeline of the hydraulic source;

the TCU controller is used for controlling the action of the piece to be tested.

Further, the piece to be measured is fixed on the mounting base, and the output end of the piece to be measured is connected to the output base.

Further, the detection device comprises a torque meter, a rotating speed sensor and an angle sensor.

Furthermore, the acquisition output ends of the torque meter, the rotating speed sensor and the angle sensor are all connected to the control module.

Further, the temperature control system comprises a heat exchanger and a flow regulating device

The heat exchanger is arranged on an output pipeline of the hydraulic source;

the output end of the flow regulating device is connected with the heat exchanger for providing cooling water and detecting the temperature and the pressure of the cooling water.

Furthermore, the piece to be detected is also accessed to a detection module;

the detection module comprises a voltage type pressure sensor acquisition channel and a temperature acquisition channel.

Furthermore, the output ends of the TCU controller and the detection module are respectively connected with a transmission calibration device; and the transmission calibration equipment is connected to the control module.

Furthermore, the TCU controller and the detection module are both connected with a power supply.

A torsion fatigue testing method for a separating clutch assembly is characterized by comprising the following steps:

s1: adjusting the temperature control system to enable the temperature of the hydraulic oil to be 70-90 ℃, carrying out hot dipping on the piece to be tested, stabilizing the temperature of the piece to be tested, and continuously providing cooling and lubricating flow to the piece to be tested through the temperature control system and the TCU controller;

s2: adjusting the pressure of a hydraulic source to be 20bar so as to close the piece to be detected;

s3: the control module outputs proper loading frequency, so that the input torque of the dynamometer is changed between Tqneg and Tqpos, torque overshoot is avoided, the acquired torque curve is ensured to be smooth and have no peak, and the part to be tested is driven to work;

s4: keeping the test of the step S3, if the detection device transmits the abnormal data to the control module to display, the piece to be detected is unqualified; if no abnormal data appear until the estimated running time of the piece to be tested, the piece to be tested is qualified.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention discloses a torsional fatigue test system of a separated clutch assembly, which adopts a control system and a cooling and lubricating oil circuit of an original speed changer, cancels a planetary gear structure at the rear end of the original speed changer, adds a set of independent hydraulic source and ensures the consistency of the control and lubrication of the separated clutch and the actual operation boundary assembled in the speed changer; meanwhile, the torsional fatigue test of the separated clutch assembly can be completed only by one dynamometer; the system has the advantages of simple structure, low equipment cost and high test precision, and can effectively improve the system efficiency and reduce the energy consumption after being used.

Further, the detection device comprises a torquemeter, a rotating speed sensor and an angle sensor, and is specifically used for measuring the torque and the rotating speed of the piece to be tested and the angle position of the input shaft, the torquemeter is used for monitoring the torque value of the piece to be tested in real time, and when the torque exceeds a set limit value, the whole test system can be triggered to stop emergently; the rotating speed sensor continuously monitors the rotating speed of the system during the test period, and when the rotating speed of the system is monitored, the system can be triggered to stop emergently; the angle sensor is used for measuring the relative angle position of the input shaft, identifying whether the system is plastically deformed or not and triggering the system to be emergently stopped.

The invention discloses a torsion fatigue test method of a separated clutch assembly, which is characterized in that a temperature control system and a TCU (thyristor controlled unit) controller are adjusted to meet the test requirement of a piece to be tested, a control module controls the loading frequency of the torque of a dynamometer, and the fatigue information of the piece to be tested can be obtained by observing the numerical value change transmitted to the control module by a detection device; meanwhile, the method can be suitable for the separated clutch assemblies on different transmissions and has strong universality.

Drawings

FIG. 1 is a schematic diagram of a breakaway clutch assembly torsional fatigue testing system in an embodiment of the present invention.

In the figure: the device comprises a control module 1, a dynamometer 2, a detection device 3, a temperature control system 4, a heat exchanger 40, a flow regulating device 41, a hydraulic source 5, a TCU controller 6, an installation base 7, an output base 70, a to-be-detected part 8, a detection module 9, a transmission calibration device 10 and a power supply 11.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

The invention discloses a torsion fatigue testing system and method for a separated clutch assembly, as shown in figure 1, the torsion fatigue testing system comprises a control module 1, wherein the control module 1 is respectively connected with a dynamometer 2, a detection device 3, a temperature control system 4, a hydraulic source 5 and a TCU controller 6;

the output end of the dynamometer 2 is in transmission connection with a piece to be detected 8, and the detection device 3 is arranged between the dynamometer 2 and the piece to be detected 8;

the output end and the input end of the hydraulic source 5 are respectively connected to the piece to be tested 8 and used for providing stable hydraulic pressure and filtered hydraulic oil for the piece to be tested 8;

the temperature control system 4 is arranged on an output pipeline of the hydraulic source 5;

the TCU controller 6 is used for controlling the action of the piece to be tested 8.

Specifically, the dynamometer 2 is a power source of the system, can cycle between required positive torque and negative torque according to a set test frequency, and meanwhile, the dynamometer 2 has a self-protection function and avoids the damage caused by torque overshoot;

the part to be measured 8 is a separated clutch assembly, the assembly is assembled in a shell, a lubricating oil path and a cooling oil path are consistent with a transmission assembly, meanwhile, a hydraulic source 7 provides required main oil supply and lubricating oil for the part to be measured 8, and hydraulic oil from the part to be measured 8 is cooled by a temperature control system 4;

the control module 1 is used as an upper computer of the system, and is used for sending and receiving instructions and controlling the operation of the whole system.

In a preferred embodiment of the present invention, the to-be-tested object 8 is fixed on the mounting base 7, and the output end of the to-be-tested object 8 is connected to the output base 70.

Specifically, the piece 8 to be measured comprises an input end and an output end, the input end is installed on the installation base 7, the output end is fixed on the output base 70 through a flange, and further, the input end of the piece 8 to be measured is connected with the output end of the dynamometer 2 through a coupler and a transmission shaft so as to realize the operation of the piece 8 to be measured.

Another preferred embodiment provided by the present invention is that the detecting device 3 includes a torque meter, a rotation speed sensor, and an angle sensor.

Furthermore, the acquisition output ends of the torquemeter, the rotating speed sensor and the angle sensor are all connected to the control module 1 and are specifically used for measuring the torque, the rotating speed and the angle position of the input shaft of the piece to be tested, the torquemeter is used for monitoring the torque value of the piece to be tested in real time, and when the torque exceeds a set limit value, the whole testing system can be triggered to stop emergently; the rotating speed sensor continuously monitors the rotating speed of the system during the test period, and when the rotating speed of the system is monitored, the system can be triggered to stop emergently; the angle sensor is used for measuring the relative angle position of the input shaft, is used for identifying whether the system generates plastic deformation or not and can trigger the system to be stopped emergently, and the precaution measures aim to effectively protect the piece to be measured 8 when a fault occurs.

According to another preferred embodiment of the present invention, the temperature control system 4 comprises a heat exchanger 40 and a flow regulating device 41

The heat exchanger 40 is arranged on an output pipeline of the hydraulic source 5, the heat exchanger 40 is used for cooling hydraulic oil of the system and controlling the temperature of the hydraulic oil entering the part to be tested 8, when the temperature of the hydraulic oil is lower, the power switch valve is opened to form a small circulation, and after the temperature of the hydraulic oil rises, the power switch valve is closed to participate in the large circulation;

the output end of the flow regulating device 41 is connected to the heat exchanger 40 to provide cooling water and detect the temperature and pressure of the cooling water.

In another preferred embodiment provided by the present invention, the to-be-tested member 8 is further connected to the detection module 9;

the detection module 9 comprises a voltage type pressure sensor acquisition channel and a temperature acquisition channel, and the further temperature acquisition channel adopts a PT100 temperature acquisition channel.

In another preferred embodiment provided by the invention, the output ends of the TCU controller 6 and the detection module 9 are respectively connected to a transmission calibration device 10; the transmission calibration device 10 is connected to the control module 1;

specifically, the transmission calibration device 10 is configured to read signals in the TCU controller 6 and signals on the CAN bus, and implement communication between the control module 1 and the TCU controller 6.

Further, the TCU controller 6 and the detection module 9 are both connected with a power supply 11; specifically, the power supply 11 uses 12V voltage; furthermore, the TCU controller 6 comprises an interface connected with a 12V power supply 11 and simultaneously connected with a wiring harness interface inside the piece to be tested 8, and the other interface is connected with a control computer through a CAN (controller area network) line and used for controlling the action of the piece to be tested 8.

The invention discloses a torsional fatigue testing method for a separating clutch assembly, which comprises the following steps:

s1: adjusting the temperature control system 4 to enable the temperature of the hydraulic oil to be 70-90 ℃, carrying out hot dipping on the piece to be tested 8 and stabilizing the temperature of the piece to be tested, and continuously providing cooling and lubricating flow to the piece to be tested 8 through the temperature control system 4 and the TCU controller 6;

s2: adjusting the pressure of the hydraulic source 5 to be 20bar, so that the part to be detected is closed;

s3: the control module 1 outputs a proper loading frequency, so that the input torque of the dynamometer 2 is changed between Tqneg and Tqpos, meanwhile, torque overshoot is avoided, the acquired torque curve is ensured to be smooth and have no peak, and the to-be-tested piece 8 is driven to work;

s4: keeping the test of the step S3, if the detection device 3 transmits the abnormal data to the control module 1, the piece to be detected 8 is not qualified; if no abnormal data appear until the estimated running time of the piece to be measured 8, the piece to be measured 8 is qualified.