CN110514426A - A kind of performance testing device of mechanical electronic hydraulic composite braking system - Google Patents
A kind of performance testing device of mechanical electronic hydraulic composite braking system Download PDFInfo
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- CN110514426A CN110514426A CN201910881648.7A CN201910881648A CN110514426A CN 110514426 A CN110514426 A CN 110514426A CN 201910881648 A CN201910881648 A CN 201910881648A CN 110514426 A CN110514426 A CN 110514426A
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- 238000012360 testing method Methods 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 230000005520 electrodynamics Effects 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000011056 performance test Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 235000004443 Ricinus communis Nutrition 0.000 claims description 4
- 240000000528 Ricinus communis Species 0.000 claims description 3
- 230000003245 working effect Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 15
- 230000018109 developmental process Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000011217 control strategy Methods 0.000 abstract description 4
- 230000033772 system development Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention discloses a kind of performance testing devices of mechanical electronic hydraulic composite braking system, comprising: bed stand unit；Brake unit, four wheel drags including bed stand unit front end is arranged in；Motor driven load unit is arranged in bed stand unit front end, and is drivingly connected with the load of four wheel drags；Braking system unit is drivingly connected, including pedal brake system and the electrodynamic braking system being mounted in the middle part of bed stand unit with the caliper of four wheel drags；Sensor unit, for acquiring each unit real-time working condition data；User experience unit, movable seat, steering wheel simulator and computer including bed stand unit rear end is arranged in.Operation of the present invention is easy, at low cost, structure is simple, can performance of the test machine Electro-hydraulic brake system under various working, be conducive to the verifying of the control strategy of mechanical electronic hydraulic composite braking system development process, improve development efficiency, reduce development cost.
Description
Technical field
The present invention relates to motor vehicle braking system measuring technologies, in particular to a kind of mechanical electronic hydraulic composite braking system
Performance testing device.
Background technique
With motorcar electric, light-weighted development, automobile brake perfrmance is more by the attention of automobile vendor.Mechanical electronic hydraulic
Composite braking system is novel braking system developed in recent years, compared to Conventional braking systems, mechanical electronic hydraulic composite braking
System eliminates traditional vacuum booster, is more suitable for the development of auto electric.Braking ability is the weight for evaluating braking system
Index is wanted, is the important composition system for guaranteeing ride safety of automobile, how to guarantee the braking ability of electromechanical hydraulic brake system, be vapour
Important process in vehicle braking system development process.
The common approach of test machine electro-hydraulic brake system braking ability is hardware in loop engine bench test and real steering vectors.It is opening
The hair stage first passes through hardware in loop rack and is tested for the property verifying, and the test function that performance test stand often integrates at present
Can be less, it only can be carried out pressure response test or stroke test, the performance test being unable to complete under various working.This means that
Need to establish the performance test that more stand arrangement complete electromechanical hydraulic brake system, to increase development cost.And with state
During outer Bosch, day electromechanical hydraulic brake system and the control strategy such as close to mark, need development and external product in platform
Disassembly installation repeatedly on frame, thus increase workload, it is inconvenient and poor to mark effect, influence development efficiency.
Summary of the invention
In view of the above technical problems, the purpose of the present invention be intended to provide it is a kind of can test machine Electro-hydraulic brake system more
The device of braking ability under kind of operating condition, apparatus function integrated level is high for this, can be used to improve in the process of development and external product
To mark efficiency, equipment cost, raising development efficiency can be reduced.
The purpose of the present invention is realized at least through one of following technical solution:
A kind of performance testing device of mechanical electronic hydraulic composite braking system, comprising:
Bed stand unit, the support base as performance testing device；
Brake unit, four wheel drags including bed stand unit front end is arranged in: near front wheel brake,
Left rear wheel brake, off-front wheel brake, off hind wheel brake；
Motor driven load unit is arranged in bed stand unit front end, and negative with four wheel drags
It carries and is drivingly connected, for simulating the moving situation of actual vehicle wheel；
Braking system unit is drivingly connected with the caliper of four wheel drags, including is mounted on the test
Pedal brake system in the middle part of platform stage unit and the electrodynamic braking system for realizing braking system performance test under various working
System；
Sensor unit, motor angular displacement sensor, wheel wheel speed sensors including motor driven load unit, brake pressure
Force snesor, braking system unit pedal force and displacement sensor, for acquiring each unit real-time working condition data；
User experience unit, including be arranged in the movable seat of bed stand unit rear end, steering wheel simulator with
Computer, for simulating full-vehicle steering movement operating condition, braking ability performance of the test machine electro-hydraulic brake system under each operating condition.
Further, the bed stand unit includes:
One rectangular base plate；
Worm gear mechanism supporting block is arranged on the bottom plate along same linear interval；
Braking system mounting plate, it is fixed to be located in the middle part of the bottom plate, for installing the braking system unit；
Seat support square plate is fixed on the bottom plate and is supported in the movable seat bottom；
Four axletree supporting blocks, it is facing each other to be arranged on the bottom plate, for installing four wheel brakings respectively
Device.
Further, the bed stand unit further include:
Several rack castors, are fixed at the bottom surface of the bottom plate；
Further, the motor driven load unit includes:
Worm screw is rotatably arranged in the worm gear mechanism supporting block；
Two worm gears, connect with the worm drive, the both ends of the central axis of the worm screw pass through respectively wheel shaft coupling with it is right
The wheel drag transmission connection answered；
Motor is drivingly connected by one end of motor coupler and the worm screw.
This programme drives four wheel-borne load rotations by single motor, and the rotary motion of motor passes through worm gear mechanism
It is transformed into the rotary motion of each wheel, the equipment cost of test device is effectively reduced.
Further, the motor coupler and wheel shaft coupling use star-shaped elastic coupling.
Further, the star-shaped elastic coupling includes two concave-convex connectors and star-like connection part, the star-like connection
Part is located among concave-convex connector, and is bolted integral.For the connection of motor and worm gear mechanism, realize dynamic
Power transmitting.
Further, the electrodynamic braking system includes:
Braking system is drivingly connected with the caliper of four wheel drags；
Measurement condition adjusts electric machine, is fixed on the bottom plate, and be connected with the brake pedal of the braking system, uses
In the performance test for applying braking system under different pedal forces progress various workings to the braking system.
Further, the measurement condition adjusting electric machine includes:
Durable test loading motor is fixed on the bottom plate；
Ball screw framework is drivingly connected, for adding the durable test with the output shaft of the durable test loading motor
The rotational motion for carrying motor is converted to linear motion；
Push rod is drivingly connected with the output end of the ball screw framework, transmitting linear motion；
Pedal connector, one end are hinged with the push rod, and the other end is connected with the brake pedal of the braking system.
Further, the movable seat includes:
Seat；
Seat slide unit is fixed at the seat bottom and is provided with sliding slot；
Seat slide unit guide rail, along the bottom plate it is horizontally-parallel be arranged in the Seat support square plate, and with the seat slide unit
Sliding slot be slidably matched.
The seat and seat slide unit of this programme can horizontally slip on seat slide unit guide rail, can facilitate and realize braking system
Switch test.
Further, the front-end and back-end of the bed stand unit are detachable structure.Front and back end part passes through company
Fitting is attached, and is split and is installed when for entering the room, and working efficiency is improved.
Compared with prior art, the beneficial effect comprise that
It is the configuration of the present invention is simple, at low cost, suitable for measuring the braking of the mechanical electronic hydraulic composite braking system under various working
Can, improve development in the process of development and external product to mark efficiency, test function integrated level is high, reduce exploitation at
This, improves development efficiency.
Detailed description of the invention
Fig. 1 is the shaft side figure of the performance testing device of the mechanical electronic hydraulic composite braking system of the embodiment of the present invention.
Fig. 2 is the side view of the performance testing device of the mechanical electronic hydraulic composite braking system of the embodiment of the present invention.
Fig. 3 is the top view of the performance testing device of the mechanical electronic hydraulic composite braking system of the embodiment of the present invention.
Fig. 4 is the axonometric drawing at another visual angle of performance testing device of the mechanical electronic hydraulic composite braking system of the embodiment of the present invention.
Fig. 5 is the motor driven load device schematic perspective view of the embodiment of the present invention.
Fig. 6 is that the measurement condition of the embodiment of the present invention adjusts electric machine schematic perspective view.
Fig. 7 is the motor coupler perspective view of the explosion of the embodiment of the present invention.
It is as shown in the figure: 1- bed stand；101- worm gear mechanism supporting block；102- braking system mounting plate；103-
Seat support square plate；104- rack castor；105- axletree supporting block；201- near front wheel brake；202- left rear wheel brake；
203- off-front wheel brake；204- off hind wheel brake；301- motor；302- motor coupler；303- worm screw；304- worm gear；
305- wheel shaft coupling；306- bumps connector；307- star-like connection part；308- bumps connector；401- pedal brake system；
402- electrodynamic braking system；403- durable test loading motor；404- ball screw framework；405- push rod；The connection of 406- pedal
Part；501- seat, 502- seat slide unit, 503- seat slide unit guide rail.
Specific embodiment
For a better understanding of the invention, the present invention is further described with reference to the accompanying drawings and examples, but this
Claimed range is invented to be not limited to implement range represented by example.
As shown in Fig. 1 to Fig. 3, a kind of performance testing device of mechanical electronic hydraulic composite braking system, comprising:
Bed stand unit, the support base as performance testing device；
Brake unit, four wheel drags including bed stand unit front end is arranged in: near front wheel brake
201, left rear wheel brake 202, off-front wheel brake 203, off hind wheel brake 204；
Motor driven load unit is arranged in bed stand unit front end, and negative with four wheel drags
It carries and is drivingly connected, for simulating the moving situation of actual vehicle wheel；
Braking system unit is drivingly connected with the caliper of four wheel drags, including is mounted on the test
Pedal brake system in the middle part of platform stage unit and the electrodynamic braking system for realizing braking system performance test under various working
System；
Sensor unit, motor angular displacement sensor, wheel wheel speed sensors including motor driven load unit, brake pressure
Force snesor, braking system unit pedal force and displacement sensor, for acquiring each unit real-time working condition data；
User experience unit, including be arranged in the movable seat of bed stand unit rear end, steering wheel simulator with
Computer, for simulating full-vehicle steering movement operating condition, braking ability performance of the test machine electro-hydraulic brake system under each operating condition.
Wherein, the bed stand unit includes:
One rectangular base plate；
Worm gear mechanism supporting block 101 is arranged on the bottom plate along same linear interval；
Braking system mounting plate 102, it is fixed to be located in the middle part of the bottom plate, for installing the braking system unit；
Seat support square plate 103 is fixed on the bottom plate and is supported in the movable seat bottom；
Four axletree supporting blocks 105, it is facing each other to be arranged on the bottom plate, for installing four wheel systems respectively
Dynamic device.
Wherein, the bed stand unit further include:
Eight rack castors 104, are fixed at the bottom surface of the bottom plate；
Wherein, as shown in figure 5, the motor driven load unit includes:
Worm screw 303 is rotatably arranged in the worm gear mechanism supporting block 101；
Two worm gears 304 are drivingly connected with the worm screw 303, and the both ends of the central axis of the worm screw 303 are joined by wheel respectively
Axis device 305 is sequentially connected with corresponding wheel drag；
Motor 301 is drivingly connected by one end of motor coupler 302 and the worm screw 303.
This programme drives four wheel-borne load rotations by single motor, and the rotary motion of motor passes through worm gear mechanism
It is transformed into the rotary motion of each wheel, the equipment cost of test device is effectively reduced.
The motor coupler 302 and wheel shaft coupling 305 use star-shaped elastic coupling.As shown in fig. 7, the star
Yielding coupling includes two concave-convex connectors and star-like connection part, and the star-like connection part is located among concave-convex connector, and leads to
It crosses and is bolted integrally.For the connection of motor and worm gear mechanism, power transmitting is realized.
The electrodynamic braking system includes:
Braking system is drivingly connected with the caliper of four wheel drags；
Measurement condition adjusts electric machine, is fixed on the bottom plate, and be connected with the brake pedal of the braking system, uses
In the performance test for applying braking system under different pedal forces progress various workings to the braking system, as shown in fig. 6, specifically
Include:
Durable test loading motor 403 is fixed on the bottom plate；
Ball screw framework 404 is drivingly connected with the output shaft of the durable test loading motor 403, and being used for will be described durable
The rotational motion of test loading motor 403 is converted to linear motion；
Push rod 405 is drivingly connected with the output end of the ball screw framework 404, transmitting linear motion；
Pedal connector 406, one end are hinged with the push rod 405, and the other end is connected with the brake pedal of the braking system
It connects.
The movable seat includes:
Seat 501；
Seat slide unit 502 is fixed at 501 bottom of seat and is provided with sliding slot；
Seat slide unit guide rail 503, along the bottom plate it is horizontally-parallel be arranged in the Seat support square plate 103, and with the seat
The sliding slot of chair slide unit 502 is slidably matched.
The seat and seat slide unit can horizontally slip on seat slide unit guide rail, can facilitate the switching for realizing braking system
Test.
The front-end and back-end of the bed stand unit are detachable structure.Front and back end part is connected by connector
It connects, splits and install when for entering the room, improve working efficiency.
When test, start motor driven load unit, the rotation of wheel is driven by motor 301, to wheel smooth rotation,
Braking test is carried out again.
Test process of the invention is described in detail below.
Pedal force is applied to electromechanical hydraulic brake system pedal by user, is led to such as Fig. 4 as the embodiment of the present invention one
The braking system unit pedal force sensor crossed in sensor unit measures pedal force numerical value, passes through braking system unit pedal position
Displacement sensor measures pedal travel displacement, and the pedal force displacement curve of braking system can be obtained, and is pedal simulator and booster
Design provide reference.
Pedal force is applied to electromechanical hydraulic brake system pedal by user, is led to such as Fig. 4 as the embodiment of the present invention two
The braking system unit pedal force and displacement sensor crossed in sensor unit can measure electromechanical hydraulic brake system tandem main cylinder
The hydraulic coupling of I and II cavity, piston stroke displacement.
Different dynamics are applied to electromechanical hydraulic brake system pedal by user such as Fig. 4 as the embodiment of the present invention three
Pedal force can measure the pressure response characteristic of servoBcylinder, master cylinder, wheel cylinder under conventional brake operating condition by sensor unit,
Realize user's subjective assessment of the braking ability of electromechanical hydraulic brake system.
Pedal force is applied to electromechanical hydraulic brake system pedal by user, is led to such as Fig. 4 as the embodiment of the present invention four
The human-computer interaction interface simulated automotive anti-lock brake control operating condition of computer, while user's steer direction disk simulator are crossed, can be surveyed
The pressure response characteristic of servoBcylinder, master cylinder, wheel cylinder under ABS operating condition is measured, realizes system of the electromechanical hydraulic brake system under ABS operating condition
User's subjective assessment of dynamic performance.
Pedal force is applied to electromechanical hydraulic brake system pedal by user, is led to such as Fig. 4 as the embodiment of the present invention five
The human-computer interaction interface simulated automotive stability control operating condition of computer, while user's steer direction disk simulator are crossed, can be measured
The pressure response characteristic of servoBcylinder, master cylinder, wheel cylinder under ESC operating condition realizes electromechanical hydraulic brake system in ESC (electronic stability control
System processed) braking ability under operating condition user's subjective assessment.
Electric machine is adjusted such as Fig. 2 as the embodiment of the present invention six by the measurement condition, brake pedal is applied
The pedal force of variation, make when brake pedal and the when of load and discharge, realize the durable test of electromechanical hydraulic brake system, pass through simultaneously
The position switching of seat slide unit can carry out the test of other operating conditions, improve testing efficiency.
Electric machine is adjusted such as Fig. 2 as the embodiment of the present invention seven by measurement condition, maximum is applied to brake pedal
Pedal force, electromechanical hydraulic brake system maximum bearing test can be carried out, i.e., maximum braking force is tested.
Pass through switching of the seat slide unit between two braking systems, Ke Yishi such as Fig. 4 as the embodiment of the present invention eight
Trying mapping for Shi Jinhang development and external product, facilitates the adjustment of control strategy, improves to mark efficiency.
The test device test operation of the embodiment of the present invention is easy, at low cost, structure is simple, can the electric-hydraulic combined system of test machine
Dynamic performance of the system under various working, is conducive to the verifying of the control strategy of mechanical electronic hydraulic composite braking system development process, mentions
High development efficiency reduces development cost.
Embodiment of the present invention are not limited by the above embodiments, other without departing from spiritual essence and principle under institute
The changes, modifications, substitutions, combinations, simplifications of work should be equivalent substitute mode, be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of performance testing device of mechanical electronic hydraulic composite braking system characterized by comprising
Bed stand unit, the support base as performance testing device；
Brake unit, four wheel drags including bed stand unit front end is arranged in: near front wheel brake
(201), left rear wheel brake (202), off-front wheel brake (203), off hind wheel brake (204)；
Motor driven load unit is arranged in bed stand unit front end, and negative with four wheel drags
It carries and is drivingly connected, for simulating the moving situation of actual vehicle wheel；
Braking system unit is drivingly connected with the caliper of four wheel drags, including is mounted on the test
Pedal brake system in the middle part of platform stage unit and the electrodynamic braking system for realizing braking system performance test under various working
System；
Sensor unit, motor angular displacement sensor, wheel wheel speed sensors including motor driven load unit, brake pressure
Force snesor, braking system unit pedal force and displacement sensor, for acquiring each unit real-time working condition data；
User experience unit, including be arranged in the movable seat of bed stand unit rear end, steering wheel simulator with
Computer, for simulating full-vehicle steering movement operating condition, braking ability performance of the test machine electro-hydraulic brake system under each operating condition.
2. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 1, which is characterized in that the testing stand
Stage unit includes:
One rectangular base plate；
Worm gear mechanism supporting block (101) is arranged on the bottom plate along same linear interval；
Braking system mounting plate (102), it is fixed to be located in the middle part of the bottom plate, for installing the braking system unit；
Seat support square plate (103) is fixed on the bottom plate and is supported in the movable seat bottom；
Four axletree supporting blocks (105), it is facing each other to be arranged on the bottom plate, for installing four wheels respectively
Brake.
3. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 2, which is characterized in that the testing stand
Stage unit further include:
Several rack castors (104), are fixed at the bottom surface of the bottom plate.
4. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 1, which is characterized in that the motor drives
Dynamic load unit includes:
Worm screw (303) is rotatably arranged on the worm gear mechanism supporting block (101)；
Two worm gears (304) are drivingly connected with the worm screw (303), and the both ends of the central axis of the worm screw (303) pass through respectively
Wheel shaft coupling (305) is sequentially connected with corresponding wheel drag；
Motor (301) is drivingly connected by the one end of motor coupler (302) and the worm screw (303).
5. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 4, which is characterized in that the motor connection
Axis device (302) and wheel shaft coupling (305) use star-shaped elastic coupling.
6. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 5, which is characterized in that the star bullet
Property shaft coupling include two concave-convex connectors and star-like connection part, the star-like connection part is located among concave-convex connector, and passes through
It is bolted integral.
7. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 2, which is characterized in that the electronic system
Dynamic system includes:
Braking system is drivingly connected with the caliper of four wheel drags；
Measurement condition adjusts electric machine, is fixed on the bottom plate, and be connected with the brake pedal of the braking system, uses
In the performance test for applying braking system under different pedal forces progress various workings to the braking system.
8. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 7, which is characterized in that the test work
Condition adjusts electric machine
Durable test loading motor (403), is fixed on the bottom plate；
Ball screw framework (404) is drivingly connected with the output shaft of the durable test loading motor (403), and being used for will be described
The rotation output of durable test loading motor (403) is converted to straight line output；
Push rod (405) is drivingly connected with the output end of the ball screw framework (404), transmitting straight line output；
Pedal connector (406), one end are hinged with the push rod (405), the brake pedal of the other end and the braking system
It is connected.
9. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 2, which is characterized in that described removable
Seat includes:
Seat (501)；
Seat slide unit (502) is fixed at the seat (501) bottom and is provided with sliding slot；
Seat slide unit guide rail (503), along the bottom plate it is horizontally-parallel be arranged on the Seat support square plate (103), and with institute
The sliding slot for stating seat slide unit (502) is slidably matched.
10. the performance testing device of mechanical electronic hydraulic composite braking system according to claim 1, which is characterized in that the test
The front-end and back-end of platform stage unit are detachable structure.
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| CN201910881648.7A CN110514426A (en) | 2019-09-18 | 2019-09-18 | A kind of performance testing device of mechanical electronic hydraulic composite braking system |
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| CN201910881648.7A CN110514426A (en) | 2019-09-18 | 2019-09-18 | A kind of performance testing device of mechanical electronic hydraulic composite braking system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999072A (en) * | 2020-07-27 | 2020-11-27 | 中国第一汽车股份有限公司 | Test device for automobile brake system |
| CN113640009A (en) * | 2021-07-16 | 2021-11-12 | 一汽奔腾轿车有限公司 | Electronic hydraulic brake system testing device |
| WO2023142812A1 (en) * | 2022-01-28 | 2023-08-03 | 中国第一汽车股份有限公司 | Brake system test bench and test method for brake system |
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| CN107192547A (en) * | 2017-07-04 | 2017-09-22 | 襄阳国铁机电股份有限公司 | A kind of diesel locomotive unit brake testing stand |
| CN107702927A (en) * | 2017-09-30 | 2018-02-16 | 安徽理工大学 | Turn to and brake actuator forfends experimental rig in the deviation of ring |
| RU181805U1 (en) * | 2017-12-28 | 2018-07-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" | Test stand for car brake system |
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| CN109406137A (en) * | 2018-11-26 | 2019-03-01 | 华南理工大学 | A kind of New type rotary wheel helical wheel transmission test bench |
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| CN113640009A (en) * | 2021-07-16 | 2021-11-12 | 一汽奔腾轿车有限公司 | Electronic hydraulic brake system testing device |
| WO2023142812A1 (en) * | 2022-01-28 | 2023-08-03 | 中国第一汽车股份有限公司 | Brake system test bench and test method for brake system |
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