Integrated controller ABS double electromagnetic valve assembly comprehensive detection system and detection method

Abstract

The present application relates to the field of ABS assembly detection, disclose integrated controller ABS double electromagnetic valve assembly comprehensive detection system and detection method, ABS integrated valve body sealing test tooling includes fixedly installed on the mounting plate bottom plate, the middle part of the bottom plate is provided with a through hole, both sides of the through hole are provided with slide rails, the slide rails are arranged with mounting platform, the mounting platform is provided with the first cylinder assembly moving up and down, the first cylinder is used for sealing positioning the air port of the lower side of the valve body, the mounting plate is provided with a positioning mechanism for positioning the pressing assembly, further includes a second cylinder assembly for sealing the left air port of the valve body, and a third plug for sealing the right air port of the valve body;The ABS integrated valve body sealing test tooling further includes a detection system, the detection system is connected with the ABS integrated valve body for detecting the sealing property of the ABS.The detection system has the advantages of high detection efficiency, multiple detection and the like.

Description

Technical Field

[0001] This invention relates to the field of ABS solenoid valve assembly testing, and more particularly to a comprehensive testing system and method for ABS dual solenoid valve assemblies with integrated controllers. Background Technology

[0002] The Anti-lock Braking System (ABS) in automobiles uses electronic control technology to automatically adjust braking force, preventing wheel lock-up and vehicle skidding during braking, thereby achieving optimal braking performance and improving the vehicle's active safety performance.

[0003] When controlling wheel lock-up, the performance of the solenoid valve in the ABS system's actuators is a crucial factor affecting its control accuracy and reliability. With the rapid pace of ABS localization, producing high-precision and reliable ABS products requires reliable solenoid valves; therefore, testing the performance of solenoid valves is an essential step. Chinese patent CN200810103084.6 provides a comprehensive performance testing device for hydraulic ABS pressure regulator assemblies, primarily for performance testing and applicable to hydraulic ABS valves. However, existing technology lacks a solution for the comprehensive testing of dual solenoid valves in ABS systems with controllers. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a comprehensive testing system for ABS dual solenoid valve assemblies with integrated controllers.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The integrated controller ABS dual solenoid valve assembly comprehensive testing system includes a bench, and the mounting plate of the bench is equipped with ABS integrated valve body sealing test fixture, ABS integrated valve performance test fixture and ABS integrated valve assembly test fixture.

[0007] The ABS integrated valve body sealing test fixture includes a base plate fixedly mounted on a mounting plate. A through hole is provided in the middle of the base plate, and slide rails are provided on both sides of the through hole. A mounting platform is arranged on the slide rails. A first cylinder assembly that moves up and down is provided on the mounting platform. The first cylinder is used to seal and position the air port on the lower side of the valve body. A positioning mechanism for positioning and clamping assembly is provided on the mounting plate. It also includes a second cylinder assembly for sealing the air port on the left side of the valve body, and a third plug for sealing the air port on the right side of the valve body.

[0008] The first cylinder assembly includes a first cylinder and a first plug at its shaft end. The first plug can seal the air port at the bottom of the valve body. The second cylinder assembly includes a second cylinder and a second plug at its shaft end. The side walls of the first plug, the second plug and the third plug are all provided with air holes for external connection.

[0009] The ABS integrated valve body sealing test fixture also includes a test system, which is connected to the ABS integrated valve body to test the sealing performance of the ABS.

[0010] Preferably, the air ports of the ABS integrated valve body include an air inlet blocked by a first plug, an air outlet one blocked by a second plug, and an air outlet two blocked by a third plug.

[0011] The detection system includes a regulating valve, an air tank, an air supply valve, and an air supply valve 2 that control the air supply at the air inlet, all connected in sequence through an air circuit. It also includes a sealing detection air circuit for detecting the sealing performance of the ABS valve body. The sealing detection air circuit includes a pressure sensor, an air tank, an isolation valve, a sealing test valve, a test balance valve, and a differential pressure sensor connected in parallel through an air circuit. The differential pressure sensor is connected to the sealing test valve and the test balance valve.

[0012] The detection system also includes an isolation valve 2 connected to the air outlet 1, an air storage cylinder 3 connected to the isolation valve 2, and a pressure sensor 2 connected to the air storage cylinder 3; it also includes an isolation valve 3 connected to the air outlet 2, an air storage cylinder 4 connected to the air storage cylinder 4, and a pressure sensor 3 connected to the air storage cylinder 4.

[0013] Preferably, it also includes a left vertical plate and a right vertical plate, the second cylinder assembly is installed on the left vertical plate, the third plug is installed on the right vertical plate, and the positioning mechanism is installed on the rear side of the base plate. The positioning mechanism includes two rotary pressing cylinders, each rotary pressing cylinder has two positioning pins on its pressure arm, and the positioning pins are used to press against the screws on the valve body; the left vertical plate and the right vertical plate are respectively installed on the left and right sides of the base plate.

[0014] The mounting platform includes a top plate, with a through hole in the middle for the lower air port to extend out. A first cylinder is installed on the lower side of the lower panel of the mounting platform, and a first plug can block the lower air port extending out of the through hole.

[0015] As a preferred option, the ABS integrated valve performance testing fixture includes a plugging mechanism for plugging the valve body, and each plug is equipped with an interface for connecting to the outside world;

[0016] The ABS integrated valve performance testing fixture also includes a performance testing system. The performance testing system includes a pressure reducing valve, an air storage cylinder five, and a control valve connected in sequence through an air circuit. The control valve is connected to the air inlet, and a pressure sensor four is installed at the air inlet. The interface of the plug at the air outlet one is connected in sequence through an air circuit to an air storage cylinder six, and the air storage cylinder six is ​​connected to a pressure sensor six. The interface of the plug at the air outlet two is connected in sequence through an air circuit to an air storage cylinder seven, and the air storage cylinder seven is connected to a pressure sensor seven.

[0017] As a preferred option, the ABS integrated valve assembly test fixture includes a host computer, and the host computer and the controller of the ABS dual solenoid valve assembly are connected to realize the offline testing of the ABS integrated valve assembly.

[0018] As a preferred option, the number of ABS integrated valve body sealing test fixtures on the test bench is two.

[0019] The integrated testing method for ABS dual solenoid valve assemblies with integrated controllers includes the aforementioned integrated controller ABS dual solenoid valve assembly comprehensive testing system. The ABS integrated valve body sealing test method is as follows:

[0020] 1) Initial balance test before ABS pressurization sealing test

[0021] The ABS valve performs three pre-actions, namely, air pressure is introduced into the air inlet, and isolation valves two and three are energized to perform pressure holding and exhaust actions. The air inlet is introduced to (1000±30) kPa, and the leakage value is tested for sealing performance. The leakage value is observed to see if it meets the preset requirements.

[0022] The specific steps are as follows:

[0023] Step 1: Regulate valve 1 to supply standard test pressure, open air supply valve 1, and after a set time, open air supply valve 2 to supply air to the air inlet for sealing. At the same time, isolation valve 1, isolation valve 2, and isolation valve 3 remain closed.

[0024] Step 2: After the pressure stabilizes, the second seal of the gas supply valve closes, the test balance valve performs the balance isolation action, and after the balance time is reached, the sealing test valve performs the sealing detection action, and the differential pressure sensor records the relevant data.

[0025] 2) ABS pressurization sealing test

[0026] With the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P ± 50 kPa is input from the inlet. Then, the air supply valve two at the sample inlet is closed. After stabilizing the pressure for a certain period of time, the pressure drop at outlet one and outlet two is measured within 30 seconds.

[0027] The specific steps are as follows:

[0028] Step 1: Open air supply valve 1 and air supply valve 2. The product's electromagnetic regulator is in the boosting state. Isolation valve 1, isolation valve 2, and isolation valve 3 are in the open state. Then close air supply valve 2 at the air inlet. After stabilizing the pressure for a certain period of time, measure the pressure drop at the air outlet of the sample within 30 seconds.

[0029] 3) ABS pressure holding condition sealing test

[0030] With the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P±50 kPa is input from the air inlet of the sample, and then it switches to the pressure holding state. The shut-off valve of the air inlet of the sample is closed, and after stabilizing the pressure for a certain period of time, the pressure drop at the air outlet of the sample is measured within 30 seconds.

[0031] The specific steps are as follows:

[0032] Open air supply valve one and air supply valve two. The product's electromagnetic regulator is in the pressure-holding state. Isolation valve one, isolation valve two, and isolation valve three are in the open state. Then close air supply valve two at the air inlet. After stabilizing the pressure (set time), measure the pressure drop at the air outlet of the sample within 30 seconds.

[0033] 4) ABS pressure drop sealing test:

[0034] With the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P±50kPa is input from the air inlet of the sample, the pressure is stabilized for 15s, and then the pressure is turned off when the air source of the air inlet of the sample is closed. After stabilizing the pressure for 15s, the pressure drop at the air inlet of the sample is measured within 30s.

[0035] Open air supply valve one and air supply valve two. The product's electromagnetic regulator is in the pressure-holding state. Isolation valve one, isolation valve two, and isolation valve three are in the open state. Then close air supply valve two at the air inlet. After stabilizing the pressure (set time), measure the pressure drop at the air outlet of the sample within 30 seconds.

[0036] As a preferred option, valve body performance testing includes response characteristic testing, pressure regulation function testing, and residual pressure testing;

[0037] Response characteristic detection:

[0038] Operate the controller to make the ABS air pressure electromagnetic regulator work in the "pressure reduction → pressure holding → pressure increase" mode, and record the relationship curve of the outlet pressure of the sample with time during the operation; determine the pressure increase time, pressure reduction time, pressure increase lag time, pressure reduction lag time, pressure increase rate in the 0.20MPa~0.50MPa rising range and pressure reduction rate in the 0.50MPa~0.20MPa falling range from the sample outlet pressure from the measured curve;

[0039] Adjustment function test:

[0040] Operate the controller to make the ABS air pressure electromagnetic regulator work in the mode of "pressure reduction → pressure holding → 12-step pressure increase → pressure increase → 7-step pressure reduction → pressure reduction → pressure holding → pressure increase", and record the relationship curve between the outlet pressure of the sample and the time history.

[0041] Residual pressure test:

[0042] Compressed air at a pressure of P±50 kPa is introduced into the sample's inlet. Once the pressure at the sample's outlet stabilizes, the inlet is rapidly vented via a reversing valve. The pressure at the outlet is measured when the inlet pressure drops to zero.

[0043] As a preferred option, the testing fixture for the ABS integrated valve assembly includes the following items:

[0044] 1) ECU power-on self-test

[0045] Connect the wiring harness, connect the battery power and ignition power, the ABS light will turn on for 2 seconds and then turn off, the solenoid valve cycle sequence does not include the front axle signal;

[0046] 2) ECU hardware and software version number identification

[0047] Version number identification is achieved by reading via K / CAN;

[0048] 3) Troubleshooting using fault lights

[0049] The host computer monitors the level of the ABS light. If the ABS light is off, the flashing code is 1-1, and the ASR light signal is reserved.

[0050] 4) Clear historical faults

[0051] The host computer sends a command to clear the fault via the K-line chart;

[0052] 5) ECU wheel speed calibration function

[0053] Whether it communicates normally with the host computer / 4-channel wheel speed test: The test bench provides the inherent frequency and voltage value (0.2V-10V) for wheel speeds of 5, 10, 30, 50, and 80 km / h. Normal communication allows the host computer to obtain the message frames (identification ID) sent by the ECU.

[0054] 6) ECU_ABS function test

[0055] Four wheel speeds cycle according to the provided standard wheel speed and time curves. Monitoring the air pressure signals of the front and rear axles triggers a stepped pattern.

[0056] 7) Read fault codes

[0057] Read fault codes from K-line and CAN line data, and display specific fault code information.

[0058] 8) Flash code detection

[0059] The ABS_ECU must support triggering the flash code.

[0060] 9) Clear fault codes

[0061] Clear the fault codes;

[0062] 10) ECU power off and then power on again

[0063] The ABS_ECU performs a second power-on self-test and checks the fault indicator light.

[0064] 11) Saving ECU test data

[0065] Test information is saved and traceable.

[0066] Because the present invention adopts the above technical solution, it has the following significant technical effects:

[0067] This invention discloses a comprehensive testing system for an ABS dual solenoid valve assembly with an integrated controller. This locking device offers advantages such as reliable locking process and no damage to the brake chamber. Furthermore, it is easy to replace, has a high degree of integration between its various mechanisms, and a compact structure. Attached Figure Description

[0068] Figure 1 This is a schematic diagram of the overall structure of the device.

[0069] Figure 2 This is a schematic diagram of the structure of the ABS integrated valve body sealing test fixture.

[0070] Figure 3 This is a schematic diagram of the air circuit for sealing test of the ABS integrated valve body.

[0071] Figure 3 (continued) yes Figure 3 The continuation of the picture, the continuation of the picture is in Figure 3 On the right side.

[0072] Figure 4 This is a schematic diagram of the air circuit for valve performance testing.

[0073] Figure 5 It is a response characteristic detection curve.

[0074] Figure 6 It is the characteristic curve of the adjustment function test.

[0075] The technical names of the reference numerals in the figure are as follows: 1—Bench, 2—ABS integrated valve body sealing test fixture, 3—ABS integrated valve performance test fixture, 4—ABS integrated valve assembly test fixture, 5—Base plate, 6—Through hole, 7—Slide rail, 8—Mounting platform, 9—First cylinder assembly, 10—Second cylinder assembly, 12—Third plug, 13—First plug, 14—Second plug, 15—Detection system one, 16—Air inlet, 17—Air outlet one, 18—Air outlet two, 19—Regulating valve one, 20—Air storage tank one, 21—Air supply valve one, 22—Air supply valve two, 23—Pressure sensor I. 24—Air Storage Cylinder II. 25—Isolation Valve III. 26—Sealing Test Valve IV. 27—Test Balance Valve V. 28—Differential Pressure Sensor VI. 30—Isolation Valve VII. 31—Air Storage Cylinder III. 32—Pressure Sensor IV. 33—Isolation Valve III. 34—Air Storage Cylinder IV. 35—Pressure Sensor III. 36—Left Vertical Plate IV. 37—Right Vertical Plate VI. 39—Rotating Downward Pressing Cylinder VII. 40—Pressure Arm VIII. 41—Positioning Column VI. 42—Pressure Reducing Valve VII. 48—Pressure Sensor VI. 49—Control Valve. Detailed Implementation

[0076] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the ABS air pressure regulator in this embodiment is an ABS dual solenoid valve, because the pressure increase, holding, and decrease at the air outlet are all achieved by energizing and de-energizing the ABS dual solenoid valve. The energizing and de-energizing commands for the ABS dual solenoid valve are issued by the controller integrated into the assembly, which is also called the ABS_ECU or ECU. Therefore, in this embodiment, these three components belong to the same part, namely the controller integrated into the assembly. During testing, the controller issues commands based on the host computer of the detection system. The host computer can simulate the vehicle's state and issue different commands accordingly, thereby controlling the controller integrated into the ABS solenoid valve assembly.

[0077] Example 1

[0078] The integrated controller ABS dual solenoid valve assembly comprehensive testing system includes a test bench 1. The mounting plate of the test bench 1 is equipped with an ABS integrated valve body sealing test fixture 2, an ABS integrated valve performance test fixture 3, and an ABS integrated valve assembly test fixture 4. The ABS integrated valve body sealing test fixture 2, the ABS integrated valve performance test fixture 3, and the ABS integrated valve assembly test fixture 4 are arranged horizontally in a "I" shape on the surface of the test bench 1.

[0079] The ABS integrated valve body sealing test fixture 2 includes a base plate 5 fixedly mounted on a mounting plate. A through hole 6 is provided in the middle of the base plate 5. Slide rails 7 are provided on both sides of the through hole 6. A mounting platform 8 is arranged on the slide rails 7. A first cylinder assembly 9 that moves up and down is provided on the mounting platform 8. The first cylinder is used to seal and position the air port on the lower side of the valve body. A positioning mechanism for positioning and pressing assembly is provided on the mounting plate. It also includes a second cylinder assembly 10 for sealing the air port on the left side of the valve body, and a third plug 12 for sealing the air port on the right side of the valve body.

[0080] The first cylinder assembly 9 includes a first cylinder and a first plug 13 at its shaft end. The first plug 13 can seal the air port at the lower part of the valve body. The second cylinder assembly 10 includes a second cylinder and a second plug 14 at its shaft end. The side walls of the first plug 13, the second plug 14, and the third plug 12 are all provided with air holes for external connection. This type of tooling can seal three air inlets 16 and two air outlets, and then the external air circuit components connected to the plugs can facilitate the control of the air inlet and outlet of each air port.

[0081] The ABS integrated valve body sealing test fixture 2 in this solution also includes a testing system 15, which is connected to the ABS integrated valve body for testing the sealing performance of the ABS. Sealing performance testing includes initial state sealing testing, pressure increase testing, pressure holding testing, and pressure decrease testing.

[0082] The ABS integrated valve body's air ports include an inlet 16 blocked by a first plug 13, an outlet 17 blocked by a second plug 14, and an outlet 18 blocked by a third plug 12; the detection system 15 includes a regulating valve 19, an air tank 20, an air supply valve 21, and an air supply valve 22 that controls the air supply to the inlet 16, all connected sequentially through an air path; it also includes a sealing detection air path for detecting the sealing performance of the ABS valve body, which includes a pressure sensor 23, an air tank 24, an isolation valve 25, a sealing performance test valve 26 and a test balance valve 27 connected in parallel, and a differential pressure sensor 28, with the differential pressure sensor 28 connected to the sealing performance test valve 26 and the test balance valve 27; the air tank 20 is a 30L air tank, and the air tank 24 is a 1L air tank.

[0083] The detection system 15 also includes an isolation valve 2 30 connected to the air outlet 1 17, an air reservoir 3 31 connected to the isolation valve 2 30, and a pressure sensor 2 32 connected to the air reservoir 3 31; it also includes an isolation valve 3 33 connected to the air outlet 2 18, an air reservoir 3 33 connected to the air reservoir 3 4, and a pressure sensor 3 35 connected to the air reservoir 3 4. Sensors 2 and 3 collect the pressure at the air outlet.

[0084] This solution also includes a left upright plate 36 and a right upright plate 37. The second cylinder assembly 10 is installed on the left upright plate 36, and the third plug 12 is installed on the right upright plate 37. The positioning mechanism is installed on the rear side of the base plate 5. The positioning mechanism includes two rotary pressing cylinders 39. Each rotary pressing cylinder 39 has two positioning pins 41 on its pressing arm 40. The positioning pins 41 are used to press against the screws on the valve body. The left upright plate 36 and the right upright plate 37 are installed on the left and right sides of the base plate 5, respectively. The mounting platform 8 includes a top plate. The middle of the top plate is provided with a through hole 6 for the lower air port to extend. The first cylinder is installed on the lower side of the lower panel of the mounting platform 8. The first plug 13 can block the lower air port extending into the through hole 6.

[0085] In this embodiment, the ABS integrated valve performance testing fixture 3 includes a sealing mechanism for sealing the valve body, and each plug is provided with an interface for connecting to the outside world; the sealing mechanism is similar to the sealing test fixture mentioned above.

[0086] The ABS integrated valve performance testing fixture 3 also includes a performance testing system. The performance testing system includes a pressure reducing valve 42, an air storage tank 43, and a control valve 49 connected in sequence through an air circuit. The control valve 49 is connected to the air inlet 16, and a pressure sensor 44 is installed at the air inlet 16. The interface of the plug at the air outlet 17 is connected in sequence through an air circuit to an air storage tank 45, and the air storage tank 45 is connected to a pressure sensor 48. The interface of the plug at the air outlet 2 18 is connected in sequence through an air circuit to an air storage tank 47, and the air storage tank 47 is connected to a pressure sensor 7.

[0087] In this embodiment, the ABS integrated valve assembly test fixture 4 includes a host computer. The host computer and the controller of the ABS dual solenoid valve assembly are connected to realize the offline testing of the ABS integrated valve assembly.

[0088] Example 2

[0089] This embodiment discloses an integrated testing method for an ABS dual solenoid valve assembly with an integrated controller, including the integrated controller ABS dual solenoid valve assembly integrated testing system of Embodiment 1 above. The ABS integrated valve body sealing test method is as follows: The controller in this solution is the product controller and the controller of the ABS dual solenoid valve assembly. The controller can control the solenoid valve of the product to turn on and off, thereby realizing the pressure increase, pressure holding and pressure reduction of the air outlet. During the testing process, the controller is controlled by the host computer of the testing system.

[0090] 1) Initial balance test before ABS pressurization sealing test

[0091] The ABS valve performs three pre-actions: air pressure is introduced into the air inlet 16, and isolation valves 2 (30) and 3 (33) are energized to perform pressure holding and exhaust actions. Air pressure is introduced into the air inlet 16 to (1000±30) kPa, and the leakage value is tested for sealing performance. The leakage value is observed to see if it meets the preset requirements.

[0092] The specific steps are as follows:

[0093] Step 1: Regulate valve 19 to supply standard test pressure, open air supply valve 121, and after a set time, open air supply valve 22 to supply air to the air inlet 16 for sealing. At the same time, isolation valve 125, isolation valve 230, and isolation valve 33 remain closed. The set time is selected based on experience.

[0094] Step 2: After the pressure stabilizes, the gas supply valve 22 seals and closes, the test balance valve 27 performs a balance isolation action, and after the balance time is reached, the sealing test valve 26 performs a sealing test action, and the differential pressure sensor 28 records the relevant data.

[0095] 2) ABS pressurization sealing test

[0096] With the ABS dual solenoid valve of the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P ± 50 kPa is input from the air inlet 16. Then, the air supply valve 22 of the air inlet 16 of the sample is closed. After stabilizing the pressure for a certain period of time, specifically 50 ± 2 s, the pressure drop of the air outlet 17 and the air outlet 28 within 30 seconds is measured.

[0097] The specific steps are as follows:

[0098] Step 1: Open air supply valve 21 and air supply valve 22. The product's electromagnetic regulator is in the boosting state. Isolation valve 25, isolation valve 20, and isolation valve 33 are in the open state. Then close air supply valve 22 at the air inlet 16. After stabilizing the pressure for a certain period of time, measure the pressure drop at the sample outlet within 30 seconds.

[0099] 3) ABS pressure holding condition sealing test

[0100] With the ABS dual solenoid valve of the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P±50kPa is input from the air inlet 16 of the sample, and then it switches to the pressure holding state. The shut-off valve of the air inlet 16 of the sample is closed. After stabilizing the pressure for a certain period of time, 50±2s, the pressure drop at the air outlet of the sample is measured within 30 seconds.

[0101] The specific steps are as follows:

[0102] Open the air supply valve 1 21 and air supply valve 22. The product electromagnetic regulator is in the pressure holding state. Isolation valve 1 25, isolation valve 2 30, and isolation valve 3 33 are in the open state. Then close the air supply valve 2 22 at the air inlet 16. After stabilizing the pressure for a certain period of time, measure the pressure drop at the air outlet of the sample within 30 seconds.

[0103] 4) ABS pressure drop sealing test

[0104] With the ABS dual solenoid valve of the ABS pneumatic electromagnetic regulator in the boosting state, compressed air of P±50kPa is input from the air inlet 16 of the sample, the pressure is stabilized for 15s, and then the pressure is turned off when the air source of the air inlet 16 of the sample is closed. After stabilizing the pressure for 15s, the pressure drop at the air inlet 16 of the sample is measured within 30s.

[0105] Specifically, open air supply valve 1 (21) and air supply valve 2 (22), the product electromagnetic regulator is in the pressure holding state, isolation valve 1 (25), isolation valve 2 (30), and isolation valve 3 (33) are in the open state, and then close air supply valve 2 (22) at the air inlet 16; after stabilizing the pressure (set time), measure the pressure drop at the air outlet of the sample within 30 seconds.

[0106] The valve body performance test in this solution includes response characteristic testing, pressure regulation function testing, and residual pressure testing.

[0107] Response characteristic detection:

[0108] The controller of the sample assembly is operated to make the ABS dual solenoid valve of the ABS pneumatic electromagnetic regulator work in the mode of "pressure reduction (time 500ms) → pressure holding (time 100ms) → pressure increase (time 500ms)". The relationship curve between the outlet pressure and time history of the sample during the operation is recorded. From the measured curve, the pressure increase time, pressure reduction time, pressure increase lag time, pressure reduction lag time, and pressure increase rate of the sample outlet pressure in the rising range of 0.20MPa~0.50MPa (taking the time corresponding to the 0.20MPa and 0.50MPa air pressure points and calculating the slope of these two points) and the pressure reduction rate in the falling range of 0.50MPa~0.20MPa (taking the time corresponding to the 0.50MPa and 0.20MPa air pressure points and calculating the slope of these two points) are determined. Among them, the pressure reducing valve 42 and the control valve 49 are in the open state.

[0109] Adjustment function test:

[0110] The controller of the operating assembly is used to make the ABS air pressure electromagnetic regulator ABS dual solenoid valve operate in the following mode: "pressure reduction (time 500ms) → pressure holding (time 100ms) → 12-step pressure increase (each step pressure increase time 12ms, pressure holding time 100ms) → pressure increase (time 400ms) → 7-step pressure reduction (each step pressure reduction time 22ms, pressure holding time 100ms) → pressure reduction (time 500ms) → pressure holding (time 100ms) → pressure increase (time 500ms)". At the same time, the relationship curve between the outlet pressure and time history of the sample is recorded.

[0111] Residual pressure test:

[0112] Compressed air of P±50kPa is input through the air inlet 16 of the sample. After the air outlet pressure of the sample reaches a stable state, the air inlet 16 of the sample is quickly released through the reversing valve. The pressure value of the air outlet is measured when the air pressure at the air inlet 16 of the sample drops to zero.

[0113] In this plan, the ABS integrated valve assembly test fixture 4 includes the following tests:

[0114] 1) ECU power-on self-test

[0115] Connect the wiring harness, connect the battery power and ignition power, the ABS light will turn on for 2 seconds and then turn off, the solenoid valve rotation sequence of pressure increase and decrease does not include the front axle signal;

[0116] 2) ECU hardware and software version number identification

[0117] Version number identification is achieved by reading via K / CAN;

[0118] 3) Troubleshooting using fault lights

[0119] The host computer monitors the ABS lamp's level; a low level is active, the ABS lamp is off, the flashing code is 1-1, and the ASR lamp signal is reserved.

[0120] 4) Clear historical faults

[0121] The host computer sends a command to clear the fault via the K-line chart;

[0122] 5) ECU wheel speed calibration function

[0123] Whether it communicates normally with the host computer / Up to 6 channels can be provided for the 4 wheel speed channels. The test bench provides the inherent frequency and voltage value (0.2V-10V) for wheel speeds of 5, 10, 30, 50, and 80 km / h. With normal communication, the host computer can obtain the message frames (identification ID) sent by the ECU.

[0124] 6) ECU_ABS function test air pressure value judgment

[0125] Up to six wheel speed channels can be provided, cycling according to the provided standard wheel speed and time curves. Monitoring the air pressure signals of the front and rear axles triggers a stepped pattern.

[0126] 7) Read fault codes

[0127] Read fault codes from the K-line and CAN-line data, and display the specific fault code information (protocol K, CAN1939).

[0128] 8) Flash code detection

[0129] The ABS_ECU must support triggering the flash code.

[0130] 9) Clear fault codes

[0131] Clear the fault codes;

[0132] 10) ECU power off and then power on again

[0133] The ABS_ECU performs a second power-on self-test and checks the fault indicator light.

[0134] 11) Saving ECU test data

[0135] Test information is saved and traceable.

[0136] Example 3

[0137] The difference between this embodiment and embodiment 1 is that the host computer is set on the stand 1.

Claims

1. An integrated testing system for ABS dual solenoid valve assemblies with an integrated controller, characterized in that: Includes a test bench (1), on which the mounting plate of the test bench (1) is provided an ABS integrated valve body sealing test fixture (2), an ABS integrated valve performance test fixture (3) and an ABS integrated valve assembly test fixture (4). The ABS integrated valve body sealing test fixture (2) includes a base plate (5) fixedly mounted on a mounting plate. A through hole (6) is provided in the middle of the base plate (5). Slide rails (7) are provided on both sides of the through hole (6). A mounting platform (8) is arranged on the slide rails (7). A first cylinder assembly (9) that moves up and down is provided on the mounting platform (8). The first cylinder is used to seal and position the air port on the lower side of the valve body. A positioning mechanism for positioning and pressing assembly is provided on the mounting plate. The fixture also includes a second cylinder assembly (10) for sealing the air port on the left side of the valve body, and a third plug (12) for sealing the air port on the right side of the valve body. The first cylinder assembly (9) includes a first cylinder and a first plug (13) provided at its shaft end. The first plug (13) can seal the air port at the bottom of the valve body. The second cylinder assembly (10) includes a second cylinder and a second plug (14) provided at its shaft end. The side walls of the first plug (13), the second plug (14) and the third plug (12) are all provided with air holes for external connection. The ABS integrated valve body sealing test fixture (2) also includes a detection system (15), which is connected to the ABS integrated valve body to test the sealing performance of the ABS. The air ports of the ABS integrated valve body include an air inlet (16) blocked by a first plug (13), an air outlet one (17) blocked by a second plug (14), and an air outlet two (18) blocked by a third plug (12). The detection system 1 (15) includes a regulating valve 1 (19), an air storage cylinder 1 (20), an air supply valve 1 (21), and an air supply valve 2 (22) that controls the air supply from the air inlet (16) connected in sequence through the air path; it also includes a sealing detection air path for detecting the sealing performance of the ABS valve body. The sealing detection air path includes a pressure sensor 1 (23), an air storage cylinder 2 (24), an isolation valve 1 (25), a sealing performance test valve (26) and a test balance valve (27) connected in parallel through the air path, and a differential pressure sensor (28). The differential pressure sensor (28) is connected to the sealing performance test valve (26) and the test balance valve (27). The detection system 1 (15) also includes an isolation valve 2 (30) connected to the air outlet 1 (17), an air storage cylinder 3 (31) connected to the air storage cylinder 3 (31), and a pressure sensor 2 (32) connected to the air outlet 2 (18); it also includes an isolation valve 3 (33) connected to the air outlet 2 (18), an air storage cylinder 4 (34) connected to the air storage cylinder 4 (34), and a pressure sensor 3 (35) connected to the air storage cylinder 4 (34).

2. The integrated controller-based ABS dual solenoid valve assembly comprehensive testing system according to claim 1, characterized in that: It also includes a left vertical plate (36) and a right vertical plate (37). The second cylinder assembly (10) is installed on the left vertical plate (36), and the third plug (12) is installed on the right vertical plate (37). The positioning mechanism is installed on the rear side of the base plate (5). The positioning mechanism includes two rotary pressing cylinders (39). Each rotary pressing cylinder (39) has two positioning pins (41) on its pressing arm (40). The positioning pins (41) are used to press against the screws on the valve body. The left vertical plate (36) and the right vertical plate (37) are installed on the left and right sides of the base plate (5), respectively. The mounting platform (8) includes a top plate, and a through hole (6) for the lower air port to extend out is provided in the middle of the top plate. The first cylinder is installed on the lower side of the lower panel of the mounting platform (8), and the first plug (13) can block the lower air port extending out of the through hole (6).

3. The integrated controller-based ABS dual solenoid valve assembly comprehensive testing system according to claim 2, characterized in that: The ABS integrated valve performance testing fixture (3) includes a plugging mechanism for the valve body, and each plug is provided with an interface for connecting to the outside world; The ABS integrated valve performance testing fixture (3) also includes a performance testing system. The performance testing system includes a pressure reducing valve (42), an air storage cylinder five (43), and a control valve (49) connected in sequence through an air circuit. The control valve (49) is connected to the air inlet (16). A pressure sensor four (44) is installed at the air inlet (16). The interface of the plug of the air outlet one (17) is connected in sequence through an air circuit to an air storage cylinder six (45). The air storage cylinder six (45) is connected to a pressure sensor six (48). The interface of the plug of the air outlet two (18) is connected in sequence through an air circuit to an air storage cylinder seven (47). The air storage cylinder seven (47) is connected to a pressure sensor seven.

4. The integrated controller-based ABS dual solenoid valve assembly comprehensive testing system according to claim 3, characterized in that: The ABS integrated valve assembly test fixture (4) includes a host computer, and the host computer and the controller of the ABS dual solenoid valve assembly are connected to realize the offline testing of the ABS integrated valve assembly.

5. The integrated controller-based ABS dual solenoid valve assembly comprehensive testing system according to claim 1, characterized in that: There are two ABS integrated valve body sealing test fixtures (2) on the test bench (1).

6. A comprehensive testing method for an integrated ABS dual solenoid valve assembly with controller, characterized in that: The ABS dual solenoid valve assembly comprehensive testing system, including the integrated controller as described in claim 3, has the following ABS integrated valve body sealing test method: 1) Initial balance test before ABS pressurization sealing test The ABS valve performs three pre-actions: air pressure is introduced into the air inlet (16), and isolation valves two (30) and three (33) are energized to perform pressure holding and exhaust actions. Air pressure is introduced into the air inlet (16) to 1000±30kPa, and the leakage value is tested for sealing performance. The leakage value is observed to see if it meets the preset requirements. The specific steps are as follows: Step 1: Regulate valve 1 (19) to supply standard test pressure, open air supply valve 1 (21), and after a set time, open air supply valve 2 (22) to supply air to the air inlet (16) in a sealed manner. At the same time, isolation valve 1 (25), isolation valve 2 (30), and isolation valve 3 (33) remain closed. Step 2: After the pressure stabilizes, the gas supply valve 2 (22) closes, the test balance valve (27) performs a balance isolation action, and after the balance time is reached, the sealing test valve (26) performs a sealing test action, and the differential pressure sensor (28) records the relevant data. 2) ABS pressurization sealing test When the ABS air pressure electromagnetic regulator is in the boosting state, P±50 kPa of compressed air is input from the air inlet (16), and then the second air supply valve (22) of the air inlet (16) of the sample is closed. After stabilizing the pressure for a certain period of time, the pressure drop of the first air outlet (17) and the second air outlet (18) within 30 seconds is measured. The specific steps are as follows: Step 1: Open the first air supply valve (21) and the second air supply valve (22). The product electromagnetic regulator is in the boosting state. The first isolation valve (25), the second isolation valve (30), and the third isolation valve (33) are in the open state. Then close the second air supply valve (22) of the air inlet (16). After stabilizing the pressure for a certain period of time, measure the pressure drop at the air outlet of the sample within 30 seconds. 3) ABS pressure holding condition sealing test When the ABS pneumatic electromagnetic regulator is in the boosting state, compressed air of P±50 kPa is input from the air inlet (16) of the sample, and then it is switched to the pressure holding state. The shut-off valve of the air inlet (16) of the sample is closed. After the pressure is stabilized for a certain period of time, the pressure drop at the air outlet of the sample is measured within 30 seconds. The specific steps are as follows: Open the first air supply valve (21) and the second air supply valve (22). The product electromagnetic regulator is in the pressure holding state. The first isolation valve (25), the second isolation valve (30), and the third isolation valve (33) are in the open state. Then close the second air supply valve (22) of the air inlet (16). After the pressure stabilization setting time, measure the pressure drop at the air outlet of the sample within 30 seconds. 4) ABS pressure drop sealing test: When the ABS pneumatic electromagnetic regulator is in the boosting state, compressed air of P±50kPa is input from the air inlet (16) of the sample, the pressure is stabilized for 15s, and then the pressure is turned off. The air source of the air inlet (16) of the sample is closed, the pressure is stabilized for 15s, and the pressure drop at the air inlet (16) of the sample is measured within 30s. Open the first air supply valve (21) and the second air supply valve (22). The product electromagnetic regulator is in the pressure holding state. The first isolation valve (25), the second isolation valve (30), and the third isolation valve (33) are in the open state. Then close the second air supply valve (22) of the air inlet (16). After the pressure stabilization setting time, measure the pressure drop at the air outlet of the sample within 30 seconds.

7. The integrated testing method for the ABS dual solenoid valve assembly with controller as described in claim 6, characterized in that: Valve body performance testing includes response characteristic testing, pressure regulation function testing, and residual pressure testing; Response characteristic detection: Operate the controller to make the ABS air pressure electromagnetic regulator work in the "pressure reduction → pressure holding → pressure increase" mode, and record the relationship curve of the outlet pressure of the sample with time during the operation; determine the pressure increase time, pressure reduction time, pressure increase lag time, pressure reduction lag time, pressure increase rate in the rising range of 0.20MPa to 0.50MPa and pressure reduction rate in the falling range of 0.50MPa to 0.20MPa from the measured curves. Adjustment function test: Operate the controller to make the ABS air pressure electromagnetic regulator work in the mode of "pressure reduction → pressure holding → 12-step pressure increase → pressure increase → 7-step pressure reduction → pressure reduction → pressure holding → pressure increase", and record the relationship curve between the outlet pressure of the sample and the time history. Residual pressure test: Compressed air of P±50kPa is input from the air inlet (16) of the sample. When the air outlet pressure of the sample reaches a stable state, the air inlet (16) of the sample is quickly released through the reversing valve. The pressure value of the air outlet is measured when the air pressure at the air inlet (16) of the sample drops to zero.

8. The integrated testing method for the ABS dual solenoid valve assembly with controller as described in claim 6, characterized in that: The ABS integrated valve assembly test fixture (4) includes the following items for testing: 1) ECU power-on self-test Connect the wiring harness, connect the battery power and ignition power, the ABS light will turn on for 2 seconds and then turn off, the solenoid valve cycle sequence does not include the front axle signal; 2) ECU hardware and software version number identification Version number identification is achieved by reading via K / CAN; 3) Troubleshooting using fault lights The host computer monitors the level of the ABS light. If the ABS light is off, the flashing code is 1-1, and the ASR light signal is reserved. 4) Clear historical faults The host computer sends a command to clear the fault via the K-line chart; 5) ECU wheel speed calibration function To check whether the communication with the host computer is normal, the test bench provides the inherent frequency and voltage value for wheel speeds of 5, 10, 30, 50 and 80 km / h, with the voltage value ranging from 0.2V to 10V. If the communication is normal, the host computer can obtain the message frames sent by the ECU. 6) ECU_ABS function test Four wheel speeds cycle according to the provided standard wheel speed and time curves, monitoring the air pressure signals of the front and rear axles to trigger the stepped pattern; 7) Read fault codes Read fault codes from K-line and CAN line data, and display specific fault code information. 8) Flash code detection The ABS_ECU must support triggering the flash code. 9) Clear fault codes Clear the fault codes; 10) ECU power off and then power on again The ABS_ECU performs a second power-on self-test and checks the fault indicator light. 11) Saving ECU test data Test information is saved and traceable.

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