CN220960502U - ABS double electromagnetic valve assembly comprehensive detection system of integrated controller - Google Patents

Abstract

The utility model relates to the field of ABS assembly detection, and discloses an ABS double-electromagnetic valve assembly comprehensive detection system of an integrated controller, wherein an ABS integrated valve body sealing test tool comprises a bottom plate fixedly arranged on a mounting plate, a through hole is arranged in the middle of the bottom plate, sliding rails are arranged on two sides of the through hole, a mounting platform is arranged on the sliding rails, a first air cylinder assembly which moves up and down is arranged on the mounting platform, the first air cylinder is used for sealing and positioning an air port on the lower side of a valve body, a positioning mechanism used for positioning a compression assembly is arranged on the mounting plate, and the ABS integrated valve body sealing test tool further comprises a second air cylinder assembly used for sealing the air port on the left side of the valve body and a third plug used for sealing the air port on the right side of the valve body; the ABS integrated valve body sealing test tool also comprises a detection system, and the detection system is connected with the ABS integrated valve body and used for detecting the tightness of the ABS. The detection system has the advantages of high detection efficiency, capability of detecting multiple items and the like.

Description

ABS double electromagnetic valve assembly comprehensive detection system of integrated controller

Technical Field

The utility model relates to the field of detection of ABS electromagnetic valve assemblies, in particular to an integrated controller ABS double-electromagnetic valve assembly comprehensive detection system.

Background

The Anti-lock braking system Anti-lockBrakingSystem, ABS for short, adopts an electronic control technology to realize automatic adjustment of braking force, prevents wheel locking and whole vehicle off-tracking sideslip during braking, so as to obtain the best braking effect and improve the active safety performance of the vehicle.

In the anti-lock control of wheels, the performance of solenoid valves in the actuators of ABS systems is a very important factor affecting the accuracy and reliability of their control. Today, ABS localization is faster and faster, and in order to produce ABS products with higher accuracy and reliability, it is necessary to have electromagnetic valves with reliable performance, so that detection of performance of the electromagnetic valves is an essential important link. Chinese patent CN200810103084.6 provides a hydraulic ABS pressure regulator assembly comprehensive performance detection device in the first place, which is mainly a performance test, and is suitable for hydraulic ABS valves, and there is no such scheme in the prior art for ABS dual electromagnetic comprehensive detection with a controller.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides an integrated detection system of an ABS double electromagnetic valve assembly of an integrated controller.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

The ABS double-electromagnetic valve assembly comprehensive detection system of the integrated controller comprises a rack, wherein an ABS integrated valve body sealing test tool, an ABS integrated valve performance test tool and an ABS integrated valve assembly test tool are arranged on a mounting plate of the rack;

The ABS integrated valve body sealing test tool comprises a bottom plate fixedly arranged on a mounting plate, a through hole is formed in the middle of the bottom plate, sliding rails are arranged on two sides of the through hole, a mounting platform is arranged on the sliding rails, a first air cylinder assembly which moves up and down is arranged on the mounting platform, the first air cylinder is used for sealing and positioning an air port on the lower side of a valve body, a positioning mechanism used for positioning and pressing an assembly is arranged on the mounting plate, and the ABS integrated valve body sealing test tool further comprises a second air cylinder assembly used for sealing the air port on the left side of the valve body and a third plug used for sealing the air port on the right side of the valve body;

The first cylinder assembly comprises a first cylinder and a first plug arranged at the shaft end of the first cylinder, the first plug can seal an air port at the lower part of the valve body, and the second cylinder assembly comprises a second cylinder and a second plug arranged at the shaft end of the second cylinder; the side walls of the first plug, the second plug and the third plug are respectively provided with an air hole for external connection;

The ABS integrated valve body sealing test tool also comprises a detection system, and the detection system is connected with the ABS integrated valve body and used for detecting the tightness of the ABS.

Preferably, the air port of the ABS integrated valve body comprises an air inlet blocked by a first plug, an air outlet blocked by a second plug and an air outlet blocked by a third plug;

The detection system comprises a first regulating valve, a first air cylinder, a first air supply valve and a second air supply valve which are sequentially connected through an air path and control air supply of an air inlet; the sealing detection air circuit comprises a first pressure sensor, a second air storage cylinder, a first isolation valve, a parallel tightness test valve, a test balance valve and a pressure difference sensor which are sequentially connected through the air circuit, wherein the pressure difference sensor is connected with the tightness test valve and the test balance valve;

The detection system also comprises a second isolation valve connected with the first air outlet, the second isolation valve is connected with a third air storage cylinder, and the third air storage cylinder is connected with a second pressure sensor; the air storage device further comprises an isolation valve III connected with the air outlet II, the isolation valve III is connected with an air storage cylinder IV, and the air storage cylinder IV is connected with a pressure sensor III.

Preferably, the valve further comprises a left vertical plate and a right vertical plate, the second cylinder assembly is arranged on the left vertical plate, the third plug is arranged on the right vertical plate, the positioning mechanism is arranged on the rear side of the bottom plate and comprises two rotary lower pressing cylinders, two positioning columns are arranged on the pressing arm of each rotary lower pressing cylinder and are used for being pressed on the screw of the valve body; the left vertical plate and the right vertical plate are respectively arranged on the left side and the right side of the bottom plate;

The mounting platform comprises a top plate, a through hole for extending out of the air port at the lower side is formed in the middle of the top plate, the first cylinder is mounted at the lower side of the lower panel of the mounting platform, and the first plug can plug the air port at the lower end extending out of the through hole.

Preferably, the ABS integrated valve performance test tool comprises a plugging mechanism for plugging a valve body, wherein each plug is provided with an interface for connecting the outside;

The ABS integrated valve performance test fixture further comprises a performance detection system, wherein the performance detection system comprises a pressure reducing valve, an air storage cylinder five and a control valve which are sequentially connected through an air path, the control valve is connected to an air inlet, a pressure sensor four is arranged at the air inlet, an interface of a plug of the air outlet is sequentially connected with the air storage cylinder six through the air path, and the air storage cylinder six is connected with the pressure sensor six; the interface of the second plug of the air outlet is sequentially connected with an air storage cylinder seven through an air passage, and the air storage cylinder seven is connected with a pressure sensor seven.

Preferably, the ABS integrated valve assembly test fixture comprises an upper computer, and the upper computer is connected with a controller of the ABS double electromagnetic valve assembly to realize the offline detection of the ABS integrated valve assembly.

Preferably, the number of the ABS integrated valve body sealing test tools on the rack is two.

The integrated ABS double-electromagnetic valve assembly offline comprehensive detection method with the controller comprises the integrated ABS double-electromagnetic valve assembly comprehensive detection system with the integrated controller, and the ABS integrated valve body sealing test method comprises the following steps:

1) ABS boost condition seal detection

The ABS valve performs 3 times of pre-actions, namely, air inlet air pressure is introduced, the isolation valve II and the isolation valve are subjected to three-way electricity to perform pressure maintaining and air exhausting actions, the air inlet is introduced into (1000+/-30) kPa, leak values are detected in a sealing mode, and whether the leak values meet preset requirements is observed;

The method comprises the following specific steps:

Step one, a regulating valve I is filled with standard test pressure, an air supply valve I is opened, after a set time, the air supply valve is opened to supply air to an air inlet in a sealing way, and meanwhile, an isolation valve I, an isolation valve II and an isolation valve III are kept closed;

After stabilizing the pressure, closing the air supply valve II, testing the balance valve to perform balance isolation, and after the balance time is up, performing tightness detection by the tightness test valve, and recording related data by the differential pressure sensor;

2) ABS boost condition tightness detection

Under the condition that the ABS air pressure electromagnetic regulator is in a pressure-increasing state, inputting 50kPa of compressed air from an air inlet, then closing an air supply valve II of the air inlet of a sample piece, and measuring pressure drop of the air outlet I and the air outlet II within 30 seconds after stabilizing the pressure for a certain time;

The method comprises the following specific steps:

Step one, opening a first air supply valve and a second air supply valve, opening a first isolation valve, a second isolation valve and a third isolation valve of a product electromagnetic regulator in a pressure-increasing state, and then closing the second air supply valve of an air inlet; after stabilizing the pressure for a certain time, measuring the pressure drop in 30 seconds at the air outlet of the sample;

3) ABS pressure maintaining state tightness detection

Under the condition that the ABS air pressure electromagnetic regulator is in a pressure-increasing state, conveying compressed air of 50kPa from an air inlet of a sample, then converting into a pressure-maintaining state, closing a stop valve of the air inlet of the sample, and measuring the pressure drop in 30 seconds at an air outlet of the sample after the pressure is stabilized for a certain time;

The method comprises the following specific steps:

Opening the first air supply valve and the second air supply valve, opening the first isolation valve, the second isolation valve and the third isolation valve under the pressure maintaining state of the product electromagnetic regulator, and then closing the second air supply valve of the air inlet; after pressure stabilization (set time), measuring the pressure drop in 30s at the air outlet of the sample;

4) And (3) detecting tightness of the ABS in a depressurization state:

Under the condition that the ABS air pressure electromagnetic regulator is in a pressure-increasing state, conveying compressed air of 50kPa from the air inlet of the sample, stabilizing the pressure for 15s, then converting into a pressure-decreasing state, closing the air source of the air inlet of the sample, stabilizing the pressure for 15s, and measuring the pressure drop in 30s at the air inlet of the sample;

Opening the first air supply valve and the second air supply valve, opening the first isolation valve, the second isolation valve and the third isolation valve under the pressure maintaining state of the product electromagnetic regulator, and then closing the second air supply valve of the air inlet; after the pressure stabilization (set time), the pressure drop in the gas outlet 30s of the sample was measured.

Preferably, the valve body performance test comprises response characteristic detection, pressure regulating function detection and residual pressure test;

response characteristic detection:

Operating the controller to enable the ABS air pressure electromagnetic regulator to work in a mode of 'pressure reduction, pressure maintaining and pressure increasing', recording a relation curve of air outlet pressure and time history of a sample in the action process, and respectively determining the pressure increasing time, the pressure reducing time, the pressure increasing lag time and the pressure reducing lag time of the sample from the measurement curve, wherein the pressure increasing rate of the air outlet pressure of the sample in a rising interval of 0.20-0.50 MPa and the pressure reducing rate of the air outlet pressure of the sample in a falling interval of 0.50-0.20 MPa;

and (3) detecting a regulating function:

Operating the controller to enable the ABS air pressure electromagnetic regulator to work in a mode of 'step-down- & gt pressure maintaining- & gt 12 steps-up- & gt step-up- & gt 7 steps-down- & gt step-down- & gt pressure maintaining- & gt step-up', and simultaneously recording a relation curve of air outlet pressure and time history of a sample;

Residual pressure test:

And (3) conveying 50kPa of compressed air from the air inlet of the sample, after the pressure of the air outlet of the sample reaches a stable value, rapidly deflating the air inlet of the sample through a reversing valve, and measuring the pressure value of the air outlet when the pressure of the air inlet of the sample drops to zero.

Preferably, the detection of the ABS integrated valve assembly test fixture comprises the following items:

1) ECU power-on self-test detection

Connecting a wire harness, switching on battery power and ignition power, and extinguishing an ABS lamp after the ABS lamp is on for 2 seconds, wherein the electromagnetic valve round-robin time sequence does not contain a front axle signal;

2) ECU hardware software version number identification

The version number identification is read through the K/CAN;

3) Fault lamp determination

The upper computer monitors the level of an ABS lamp, the ABS lamp is not lightened, the flash code is 1-1, and an ASR lamp signal is reserved;

4) Clearing historical faults

The upper computer sends out a clear fault command through a K line;

5) ECU wheel speed checking function

Whether the test board normally communicates with the upper computer or not or whether the test board has a wheel speed of 5, 10, 30, 50 and 80km/h, and a natural frequency and a voltage value (0.2V-10V), wherein the normal communication upper computer can acquire a message frame (identification ID) sent by the ECU;

6) ECU_ABS function detection

4-Way wheel speed, and circulation is carried out according to the provided standard wheel speed and time curve. Monitoring air pressure signals of the front shaft and the rear shaft to trigger a ladder shape;

7) Reading fault codes

Reading fault codes from the data of the K line and the CAN line, and displaying a specific fault code information protocol;

8) Flash code detection

Triggering a flash code, wherein the ABS_ECU needs to be supported;

9) Clearing fault codes

Clearing fault codes;

10 ECU power-off secondary power-on

The ABS_ECU performs secondary power-on self-detection and fault lamp judgment;

11 ECU test data save

Test information is stored and traceable information is obtained.

Due to the adoption of the technical scheme, the utility model has the following remarkable technical effects:

The utility model discloses an integrated controller ABS double electromagnetic valve assembly comprehensive detection system, which has the advantages of reliable locking process, no damage to a brake chamber and the like. And the device is convenient to replace, high in integration degree among all mechanisms and compact in structure.

Drawings

Fig. 1 is a schematic view of the overall structure of the device.

FIG. 2 is a schematic structural diagram of an ABS integrated valve body sealing test fixture.

FIG. 3 is a function of an ABS integrated valve body seal test.

Fig. 3A is a continuation of fig. 3, the continuation being on the right side of fig. 3.

Fig. 4 is a functional diagram of a valve performance test.

Fig. 5 is a response characteristic detection curve.

Fig. 6 is a regulation function detection characteristic curve.

The technical names of the reference numerals in the drawings are: 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-bottom plate, 6-through hole, 7-slide rail, 8-mounting platform, 9-first cylinder component, 10-second cylinder component, 12-third plug, 13-first plug, 14-second plug, 15-detection system, 16-air inlet, 17-air outlet, 18-air outlet, 19-regulating valve, 20-air storage cylinder, 21-air supply valve, 22-air supply valve, 23-pressure sensor, 24-air storage cylinder, 25-isolation valve, 26-tightness test valve, 27-test balance valve, 28-differential pressure sensor, 30-isolation valve, 31-air storage cylinder, 32-pressure sensor, 33-isolation valve, 34-air storage cylinder, 35-pressure sensor, 36-left vertical plate, 37-right vertical plate, 39-rotating lower pressure cylinder, 40-pressure arm, 41-positioning column, 42-air storage cylinder, 43-pressure sensor, 48-air storage cylinder, 48-pressure sensor, 48-air storage cylinder, and 48-pressure sensor.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be noted that the ABS air pressure regulator in this embodiment is an ABS double electromagnetic valve, because the boosting, pressure maintaining and pressure reducing at the air outlet end are all realized by the on-off of the ABS double electromagnetic valve, the on-off command of the ABS double electromagnetic valve is sent by the controller carried by the assembly, which is also called abs_ecu or ECU, so in this embodiment, the three components belong to the same component, i.e. the controller carried by the assembly. The upper computer can simulate the state of the vehicle to send different instructions according to the instruction sent by the controller in the test process and control the controller carried by the ABS electromagnetic valve assembly.

Example 1

The ABS double-electromagnetic valve assembly comprehensive detection system of the integrated controller comprises a rack 1, wherein an ABS integrated valve body sealing test tool 2, an ABS integrated valve performance test tool 3 and an ABS integrated valve assembly test tool 4 are arranged on a mounting plate of the rack 1; the ABS integrated valve body sealing test tool 2, the ABS integrated valve performance test tool 3 and the ABS integrated valve assembly test tool 4 are transversely arranged on the table surface of the table frame 1 in a straight line shape;

The ABS integrated valve body sealing test tool 2 comprises a bottom plate 5 fixedly arranged on a mounting plate, a through hole 6 is formed in the middle of the bottom plate 5, sliding rails 7 are arranged on two sides of the through hole 6, a mounting platform 8 is arranged on the sliding rails 7, a first air cylinder assembly 9 which moves up and down is arranged on the mounting platform 8, the first air cylinder is used for sealing and positioning an air port on the lower side of a valve body, a positioning mechanism used for positioning and pressing an assembly is arranged on the mounting plate, and the ABS integrated valve body sealing test tool further comprises a second air cylinder assembly 10 used for sealing the air port on the left side of the valve body and a third plug 12 used for sealing the air port on the right side of the valve body;

the first cylinder assembly 9 comprises a first cylinder and a first plug 13 is arranged at the shaft end of the first cylinder, the first plug 13 can seal an air port at the lower part of the valve body, and the second cylinder assembly 10 comprises a second cylinder and a second plug 14 arranged at the shaft end of the second cylinder; the side walls of the first plug 13, the second plug 14 and the third plug 12 are provided with air holes for external connection. The tool with the structure can plug three air inlets 16 and two air outlets, and then the plug is externally connected with an air path element to conveniently control the air inlet and the air outlet of each air port.

In this scheme, the sealed test fixture 2 of the ABS integrated valve body further comprises a detection system 15, and the detection system 15 is connected with the ABS integrated valve body and used for detecting the tightness of the ABS. The tightness detection comprises initial state sealing detection, pressure boosting detection, pressure maintaining detection, pressure reducing detection and the like.

The air port of the ABS integrated valve body comprises an air inlet 16 blocked by a first plug 13, an air outlet I17 blocked by a second plug 14 and an air outlet II 18 blocked by a third plug 12; the detection system 15 comprises a first regulating valve 19, a first air storage cylinder 20, a first air supply valve 21 and a second air supply valve 22 which are sequentially connected through an air path and control air supply of the air inlet 16, and the second air supply valve 22 can control air intake of the air inlet 16; the air-tightness testing device comprises an air-tightness testing valve body, and is characterized by further comprising a sealing testing air passage for testing the tightness of the ABS valve body, wherein the sealing testing air passage comprises a first pressure sensor 23, a second air storage cylinder 24, a first isolation valve 25, a parallel tightness testing valve 26, a testing balance valve 27 and a pressure difference sensor 28 which are sequentially connected through the air passage, and the pressure difference sensor 28 is connected with the tightness testing valve 26 and the testing balance valve 27; the first air cylinder 20 is a 30L air cylinder, and the second air cylinder 24 is a 1L air cylinder.

The detection system 15 further comprises a second isolation valve 30 connected with the first air outlet 17, the second isolation valve 30 is connected with a third air storage cylinder 31, and the third air storage cylinder 31 is connected with a second pressure sensor 32; the air storage device further comprises a third isolation valve 33 connected with the second air outlet 18, the third isolation valve 33 is connected with a fourth air storage cylinder 34, and the fourth air storage cylinder 34 is connected with a third pressure sensor 35. And the second sensor and the third sensor collect the pressure of the air outlet.

The scheme also comprises a left vertical plate 36 and a right vertical plate 37, the second cylinder assembly 10 is arranged on the left vertical plate 36, the third plug 12 is arranged on the right vertical plate 37, the positioning mechanism is arranged on the rear side of the bottom plate 5 and comprises two rotary pressing cylinders 39, two positioning columns 41 are arranged on a pressing arm 40 of each rotary pressing cylinder 39, and the positioning columns 41 are used for being pressed on a screw of the valve body; the left riser 36 and the right riser 37 are respectively installed at the left side and the right side of the bottom plate 5; the mounting platform 8 comprises a top plate, a through hole 6 for extending out of a lower air port is formed in the middle of the top plate, the first cylinder is mounted on the lower side of a lower panel of the mounting platform 8, and a first plug 13 can plug the lower air port extending out of the through hole 6.

In the embodiment, the ABS integrated valve performance test tool 3 comprises a plugging mechanism for plugging a valve body, and each plug is provided with an interface for connecting the outside; the plugging mechanism is similar to the sealing test tool.

The ABS integrated valve performance test fixture 3 further comprises a performance detection system, wherein the performance detection system comprises a pressure reducing valve 42, an air storage cylinder five 43 and a control valve 49 which are sequentially connected through an air passage, the control valve 49 is connected to an air inlet 16, a pressure sensor four 44 is arranged at the air inlet 16, an interface of a plug of an air outlet one 17 is sequentially connected with an air storage cylinder six 45 through the air passage, and the air storage cylinder six 45 is connected with a pressure sensor six 48; the interface of the plug of the second air outlet 18 is sequentially connected with an air cylinder seven 47 through an air passage, and the air cylinder seven 47 is connected with a pressure sensor seven.

In this embodiment, the ABS integrated valve assembly test fixture 4 includes an upper computer, and the upper computer is connected with a controller of the ABS dual electromagnetic valve assembly to realize the offline detection of the ABS integrated valve assembly.

Example 2

The embodiment discloses an integrated ABS double electromagnetic valve assembly offline comprehensive detection method with a controller, which comprises the ABS double electromagnetic valve assembly comprehensive detection system of the integrated controller of the embodiment 1, and the ABS integrated valve body sealing test method is as follows: the controller in this scheme is the controller of product and the two solenoid valve assemblies of ABS bring, thereby the solenoid valve of controller controllable product is cut off the power supply and is realized the boost, pressurize, the decompression of gas outlet, and the controller is by test system's host computer control in the testing process.

1) Initial balance detection before ABS boost state seal detection

The ABS valve performs 3 times of pre-actions, namely, the air inlet 16 is electrified to perform air pressure, the isolation valve II 30 and the isolation valve III 33 are electrified to perform pressure maintaining and air exhausting actions, the air inlet 16 is electrified to (1000+/-30) kPa to perform tightness detection on a leakage value, and whether the leakage value meets preset requirements is observed;

The method comprises the following specific steps:

Step one, a standard test pressure is introduced into a regulating valve I19, an air supply valve I21 is opened, an air supply valve II 22 is opened to supply air to an air inlet 16 in a sealing way after a set time, and an isolation valve I25, an isolation valve II 30 and an isolation valve III 33 are kept closed; wherein the set time is selected by experience judgment;

After stabilizing the pressure, the air supply valve II 22 is sealed to perform closing action, the test balance valve 27 is subjected to balance isolation action, after the balance time is up, the tightness test valve 26 is subjected to tightness detection action, and the pressure difference sensor 28 records related data; thereby can be rated

2) ABS boost condition tightness detection

Under the condition that an ABS double electromagnetic valve of the ABS air pressure electromagnetic regulator is in a pressure-increasing state, inputting 50kPa of compressed air from an air inlet 16, then closing an air supply valve II 22 of an air inlet 16 of a sample, stabilizing pressure for a certain time, specifically 50+/-2 seconds, and measuring pressure drop of an air outlet I17 and an air outlet II 1830 seconds;

The method comprises the following specific steps:

Step one, opening a first air supply valve 21 and a second air supply valve 22, wherein the first isolation valve 25, the second isolation valve 30 and the third isolation valve 33 are in an open state when the product electromagnetic regulator is in a pressure-increasing state, and then closing the second air supply valve 22 of the air inlet 16; after stabilizing the pressure for a certain time, measuring the pressure drop in 30 seconds at the air outlet of the sample;

3) ABS pressure maintaining state tightness detection

Under the condition that an ABS double electromagnetic valve of the ABS air-pressure electromagnetic regulator is in a pressure-increasing state, conveying compressed air of 50kPa from an air inlet 16 of a sample, then converting the compressed air into a pressure-maintaining state, closing a stop valve of the air inlet 16 of the sample, and measuring the pressure drop in 30 seconds at an air outlet of the sample after the pressure is stabilized for a certain time, wherein the pressure is increased by 50+/-2 seconds;

The method comprises the following specific steps:

Opening the first air supply valve 21 and the second air supply valve 22, opening the first isolation valve 25, the second isolation valve 30 and the third isolation valve 33 under the pressure maintaining state of the product electromagnetic regulator, and then closing the second air supply valve 22 of the air inlet 16; after stabilizing the pressure for a certain time, measuring the pressure drop in 30 seconds at the air outlet of the sample;

4) ABS depressurization state tightness detection

Under the condition that an ABS double electromagnetic valve of the ABS air-pressure electromagnetic regulator is in a pressure-increasing state, compressed air of P+/-50 kPa is conveyed from an air inlet 16 of a sample, the pressure is stabilized for 15s, then the pressure is reduced, an air source of the air inlet 16 of the sample is closed, and after the pressure is stabilized for 15s, the pressure drop in 30s of the air inlet 16 of the sample is measured;

Specifically, the first air supply valve 21 and the second air supply valve 22 are opened, the first isolation valve 25, the second isolation valve 30 and the third isolation valve 33 are opened under the pressure maintaining state of the product electromagnetic regulator, and then the second air supply valve 22 of the air inlet 16 is closed; after the pressure stabilization (set time), the pressure drop in the gas outlet 30s of the sample was measured.

The valve body performance test in the scheme comprises response characteristic detection, pressure regulating function detection and residual pressure test;

response characteristic detection:

Operating a controller of the sample assembly to enable an ABS double electromagnetic valve of the ABS pneumatic-pressure electromagnetic regulator to work in a mode of 'depressurization (time is 500 ms) →pressure maintaining (time is 100 ms) →pressure boosting (time is 500 ms)', and recording a relation curve between the air outlet pressure of the sample and the time history in the action process; respectively determining the pressure rise time, the pressure reduction time, the pressure rise lag time and the pressure reduction lag time of the sample piece from the measurement curve, and calculating the pressure rise rate of the pressure of the air outlet of the sample piece in the rising interval of 0.20MPa to 0.50MPa (taking the time corresponding to the air pressure points of 0.20MPa and 0.50MPa and calculating the slope of the two points) and the pressure reduction rate of the sample piece in the falling interval of 0.50MPa to 0.20MPa (taking the time corresponding to the air pressure points of 0.50MPa and 0.20MPa and calculating the slope of the two points); wherein the pressure reducing valve 42 and the control valve 49 are in an open state;

and (3) detecting a regulating function:

operating a controller of the assembly to enable the ABS double electromagnetic valve of the ABS air pressure electromagnetic regulator to work in a mode of 'depressurization (time is 500 ms) →pressure maintaining (time is 100 ms) -12 steps of pressure boosting (the pressure boosting time of each step is 12ms and the pressure maintaining time is 100 ms) →pressure boosting (time is 400 ms) →7 steps of pressure reducing (the pressure reducing time of each step is 22ms. The pressure maintaining time is 100 ms) →pressure reducing (time is 500 ms) →pressure maintaining (time is 100 ms) →pressure boosting (time is 500 ms)', and simultaneously recording the relation curve of the air outlet pressure and time history of a sample;

Residual pressure test:

And (3) conveying 50kPa of compressed air from the air inlet 16 of the sample, after the air outlet pressure of the sample reaches a stable state, rapidly deflating the air inlet 16 of the sample through a reversing valve, and measuring the pressure value of the air outlet when the air pressure of the air inlet 16 of the sample drops to zero.

In this scheme, ABS integrated valve closes dress assembly test fixture 4 detects and includes following items:

1) ECU power-on self-test detection

Connecting a wire harness, switching on battery power and ignition power, and extinguishing an ABS lamp after the ABS lamp is on for 2 seconds, wherein the sequence and time of the electromagnetic valve in the cycle time sequence do not contain a front axle signal;

2) ECU hardware software version number identification

The version number identification is read through the K/CAN;

3) Fault lamp determination

The upper computer monitors that the level of the ABS lamp is effective and low, the ABS lamp is not lightened, the flash code is 1-1, and an ASR lamp signal is reserved;

4) Clearing historical faults

The upper computer sends out a clear fault command through a K line;

5) ECU wheel speed checking function

Whether the test bench normally communicates with the upper computer or not and the wheel speed of 4 paths can provide 6 paths at most, the test bench provides natural frequency and voltage values (0.2V-10V) with the wheel speeds of 5, 10, 30, 50 and 80km/h, and the normal communication upper computer can acquire a message frame (identification ID) sent by the ECU;

6) ECU_ABS function detection air pressure value judgment

The 4-channel wheel speed can provide 6 channels at most, and the circulation is carried out according to the provided standard wheel speed and time curve. Monitoring air pressure signals of the front shaft and the rear shaft to trigger a ladder shape;

7) Reading fault codes

Reading fault codes from the data of the K line and the CAN line, and displaying a specific fault code information protocol K, CAN and 1939;

8) Flash code detection

Triggering a flash code, wherein the ABS_ECU needs to be supported;

9) Clearing fault codes

Clearing fault codes;

10 ECU power-off secondary power-on

The ABS_ECU performs secondary power-on self-detection and fault lamp judgment;

11 ECU test data save

Test information is stored and traceable information is obtained.

Example 3

This embodiment differs from embodiment 1 in that: the upper computer is arranged on the rack 1.

Claims (6)

1. ABS double solenoid valve assembly comprehensive detection system of integrated controller, its characterized in that: the ABS integrated valve sealing test device comprises a bench (1), wherein an ABS integrated valve sealing test tool (2), an ABS integrated valve performance test tool (3) and an ABS integrated valve assembly test tool (4) are arranged on a mounting plate of the bench (1);

The ABS integrated valve body sealing test tool (2) comprises a bottom plate (5) fixedly installed on a mounting plate, a through hole (6) is formed in the middle of the bottom plate (5), sliding rails (7) are arranged on two sides of the through hole (6), a mounting platform (8) is arranged on the sliding rails (7), a first air cylinder assembly (9) which moves up and down is arranged on the mounting platform (8), the first air cylinder is used for sealing and positioning an air port on the lower side of a valve body, a positioning mechanism used for positioning and pressing the assembly is arranged on the mounting plate, and the ABS integrated valve body sealing test tool further comprises a second air cylinder assembly (10) used for sealing the air port on the left side of the valve body and a third plug (12) used for sealing the air port on the right side of the valve body;

The first cylinder assembly (9) comprises a first cylinder and a first plug (13) is arranged at the shaft end of the first cylinder, the first plug (13) can seal an air port at the lower part of the valve body, and the second cylinder assembly (10) comprises a second cylinder and a second plug (14) arranged at the shaft end of the second cylinder; the side walls of the first plug (13), the second plug (14) and the third plug (12) are respectively provided with an air hole for external connection;

The ABS integrated valve body sealing test tool (2) further comprises a detection system (15), and the detection system (15) is connected with the ABS integrated valve body and used for detecting the tightness of the ABS.

2. The integrated controller ABS dual solenoid valve assembly comprehensive detection system according to claim 1 wherein: the air port of the ABS integrated valve body comprises an air inlet (16) blocked by a first plug (13), an air outlet I (17) blocked by a second plug (14) and an air outlet II (18) blocked by a third plug (12);

The detection system (15) comprises a first regulating valve (19), a first air cylinder (20), a first air supply valve (21) and a second air supply valve (22) which are sequentially connected through an air path and control an air inlet (16) to supply air; the air-tightness testing device comprises an air-tightness testing valve body, and is characterized by further comprising a sealing testing air passage used for testing the tightness of the ABS valve body, wherein the sealing testing air passage comprises a first pressure sensor (23), a second air cylinder (24), a first isolation valve (25), a parallel tightness testing valve (26), a testing balance valve (27) and a pressure difference sensor (28), which are sequentially connected through the air passage, and the pressure difference sensor (28) is connected with the tightness testing valve (26) and the testing balance valve (27);

the detection system (15) further comprises a second isolation valve (30) connected with the first air outlet (17), the second isolation valve (30) is connected with a third air storage cylinder (31), and the third air storage cylinder (31) is connected with a second pressure sensor (32); the air storage device further comprises a third isolation valve (33) connected with the second air outlet (18), the third isolation valve (33) is connected with a fourth air storage cylinder (34), and the fourth air storage cylinder (34) is connected with a third pressure sensor (35).

3. The integrated controller ABS dual solenoid valve assembly comprehensive detection system according to claim 1 wherein: the hydraulic valve further comprises a left vertical plate (36) and a right vertical plate (37), the second cylinder assembly (10) is arranged on the left vertical plate (36), the third plug (12) is arranged on the right vertical plate (37), the positioning mechanism is arranged on the rear side of the bottom plate (5) and comprises two rotary lower pressing cylinders (39), two positioning columns (41) are arranged on pressing arms (40) of each rotary lower pressing cylinder (39), and the positioning columns (41) are used for being pressed on screws of the valve body; the left vertical plate (36) and the right vertical plate (37) are respectively arranged on the left side and the right side of the bottom plate (5);

the mounting platform (8) comprises a top plate, a through hole (6) used for extending out of the air port at the lower side is formed in the middle of the top plate, the first cylinder is mounted at the lower side of the lower panel of the mounting platform (8), and the first plug (13) can plug the air port at the lower end extending out of the through hole (6).

4. The integrated controller ABS dual solenoid valve assembly comprehensive detection system according to claim 2 wherein: the ABS integrated valve performance test tool (3) comprises a plugging mechanism for plugging the valve body, and each plug is provided with an interface for connecting the outside;

The ABS integrated valve performance test tool (3) further comprises a performance detection system, wherein the performance detection system comprises a pressure reducing valve (42), an air storage cylinder five (43) and a control valve (49) which are sequentially connected through an air path, the control valve (49) is connected to an air inlet (16), a pressure sensor four (44) is arranged at the air inlet (16), an air storage cylinder six (45) is sequentially connected to an interface of a plug of an air outlet one (17) through the air path, and the air storage cylinder six (45) is connected with the pressure sensor six (48); the interface of the plug of the second air outlet (18) is sequentially connected with a seventh air storage cylinder (47) through an air passage, and the seventh air storage cylinder (47) is connected with a seventh pressure sensor.

5. The integrated controller ABS dual solenoid valve assembly integrated detection system according to claim 4 wherein: the ABS integrated valve assembly test fixture (4) comprises an upper computer, and the upper computer is connected with a controller of the ABS double electromagnetic valve assembly to realize the offline detection of the ABS integrated valve assembly.

6. The integrated controller ABS dual solenoid valve assembly comprehensive detection system according to claim 1 wherein: the number of the ABS integrated valve body sealing test tools (2) on the bench (1) is two.