CN110501168A - A kind of reliability test method of brake and drive system for vehicle with tow - Google Patents
A kind of reliability test method of brake and drive system for vehicle with tow Download PDFInfo
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- CN110501168A CN110501168A CN201910626020.2A CN201910626020A CN110501168A CN 110501168 A CN110501168 A CN 110501168A CN 201910626020 A CN201910626020 A CN 201910626020A CN 110501168 A CN110501168 A CN 110501168A
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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
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses a kind of reliability test methods of brake and drive system for vehicle with tow, comprising: under normal temperature environment, vehicle is accelerated to default initial velocity；Slowing-down brake to vehicle is carried out to vehicle to stop, and measures wear intensity of the vehicle brake block under default initial velocity under normal temperature environment, and record the brake duration of vehicle；Under normal temperature environment, vehicle is accelerated into default test speed；Slowing-down brake to vehicle is carried out to vehicle to stop, and measures wear intensity of the vehicle brake block under default test speed under normal temperature environment, and record the brake duration of vehicle；According to the wear intensity of the vehicle brake piece measured under default initial velocity and default test speed respectively and the vehicle brake duration of record, the reliability of brake and drive system for vehicle with tow is assessed.Through the invention, the reliability that brake system is assessed in conjunction with the wear intensity of brake block and brake duration, greatly enhances the accuracy of brake and drive system for vehicle with tow reliability test result.
Description
Technical field
The present invention relates to the reliability test field of vehicle special purpose parts, in particular to a kind of reliability of brake and drive system for vehicle with tow
Test method.
Background technique
Existing brake and drive system for vehicle with tow needs environment manufacturing equipment structure to be used larger when testing, cost compared with
Height, the environment manufacturing cycle is too long, and too long so as to cause the brake and drive system for vehicle with tow test specimen testing time, testing efficiency is low；And it is existing
Some brake and drive system for vehicle with tow are the reliability for considering brake system from brake duration in test, but the brake system of vehicle
Braking quality in actual use of uniting will receive the influence of many factors, so existing test method can not be examined accurately
Measure the reliability of brake and drive system for vehicle with tow.
Summary of the invention
The present invention provides a kind of reliability test method of brake and drive system for vehicle with tow, in conjunction with brake block wear intensity and brake when
The long reliability to assess brake system, greatly enhances the accuracy of brake and drive system for vehicle with tow reliability test result.
According to an aspect of the invention, there is provided a kind of reliability test method of brake and drive system for vehicle with tow, including it is following
Step:
Under normal temperature environment, vehicle is accelerated into default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under normal temperature environment is measured and is preset described
Wear intensity under initial velocity, and record brake duration of the vehicle under the default initial velocity；
Under normal temperature environment, vehicle is accelerated into default test speed；Wherein, the default test speed is from described pre-
If initial velocity starts several test speed values increased with identical rate of rise；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under normal temperature environment is measured and is preset described
Wear intensity under test speed, and record brake duration of the vehicle under the default test speed；
According to the abrasion of the vehicle brake piece measured under the default initial velocity and the default test speed respectively
The vehicle brake duration of degree and record, assesses the reliability of brake and drive system for vehicle with tow.
Preferably, under normal temperature environment, before vehicle is accelerated to default initial velocity, this method further includes following
Step:
Prestowage is carried out to vehicle, so that automobile front-axle load is specified maximum load, rear axle load is specified maximum load
80%.
Preferably, slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is in institute under measurement normal temperature environment
The wear intensity under default test speed is stated, and records vehicle after the brake duration under the default test speed, this method
It is further comprising the steps of:
The brake system temperature of vehicle is risen into test temperature by electric boiling plate；Wherein, the test temperature be from
Room temperature starts with several raised test temperature values of fixed climbing speed；
Under the test temperature, vehicle is accelerated into the default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under test temperature is measured and is preset described
Wear intensity under initial velocity, and record brake duration of the vehicle under the default initial velocity；
Under the test temperature, vehicle is accelerated into the default test speed；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under test temperature is measured and is preset described
Wear intensity under initial velocity, and record brake duration of the vehicle under the default initial velocity；
According to the abrasion of the vehicle brake piece measured under the default initial velocity and the default test speed respectively
The vehicle brake duration of degree and record, assesses the reliability of brake and drive system for vehicle with tow, specifically:
According in the room temperature and test temperature measured under the default initial velocity and the default test speed respectively
The wear intensity of vehicle brake piece and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
Preferably, the room temperature is 25 DEG C, and the test temperature is respectively 30 DEG C, 35 DEG C and 40 DEG C, the test temperature
The climbing speed of degree is to rise 5 DEG C every time.
Preferably, slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is in institute under measurement normal temperature environment
The wear intensity under default test speed is stated, and records vehicle after the brake duration under the default test speed, this method
It is further comprising the steps of:
The brake system humidity of vehicle is adjusted to test humidity by humidifier；Wherein, if the test humidity includes
The dry equal humidity value of difference；
Under the test humidity, vehicle is accelerated into the default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is described default under measurement test humidity
Wear intensity under initial velocity, and record brake duration of the vehicle under the default initial velocity；
Under the test humidity, vehicle is accelerated into the default test speed；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is described default under measurement test humidity
Wear intensity under initial velocity, and record brake duration of the vehicle under the default initial velocity；
According to the abrasion of the vehicle brake piece measured under the default initial velocity and the default test speed respectively
The vehicle brake duration of degree and record, assesses the reliability of brake and drive system for vehicle with tow, specifically:
It is stopped according to vehicle in the test humidity measured under the default initial velocity and the default test speed respectively
The wear intensity of vehicle piece and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
Preferably, the test humidity is 70%rh, 75%rh, 80%rh and 85%rh.
Preferably, the default initial velocity be 60 kilometers per hour, the default test speed be 70 kilometers per hour,
80 kilometers per hour, 90 kilometers per hour, 100 kilometers per hour, 110 kilometers per hour and 120 kilometers per hour, it is described pre-
If the rate of rise of test speed is to increase by 10 kilometers every time per hour.
Compared with prior art, beneficial effects of the present invention are as follows:
Through the invention, it is tested first under normal temperature environment after brake and drive system for vehicle with tow brakes at various speeds to brake
The abrasion condition and brake duration of piece, then adjust the temperature value of brake and drive system for vehicle with tow, the re-test vehicle under new temperature environment
Brake system brake at various speeds after to the abrasion condition and brake duration of brake block, or also adjustable vehicle
The humidity of brake system, to brake block after test brake and drive system for vehicle with tow brakes at various speeds under humidity after the adjustment
Abrasion condition and brake duration, are commented by the abrasion condition and brake duration of the brake block tested in different tests environment
The reliability for estimating brake and drive system for vehicle with tow greatly improves the accuracy of reliability assessment result.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In attached drawing:
Fig. 1 is a kind of flow chart of the reliability test method of brake and drive system for vehicle with tow according to an embodiment of the present invention；
Fig. 2 is the flow chart of the reliability test method of according to embodiments of the present invention one another brake and drive system for vehicle with tow；
Fig. 3 is the flow chart of the reliability test method of according to embodiments of the present invention two another brake and drive system for vehicle with tow.
Specific embodiment
Below in conjunction with attached drawing of the present invention, technical solution of the present invention is described, but described embodiment is only
A part of the embodiment of the present invention, based on the embodiments of the present invention, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of reliability test method of brake and drive system for vehicle with tow, Fig. 1 is real according to the present invention
A kind of flow chart of the reliability test method of brake and drive system for vehicle with tow of example is applied, as shown in Figure 1, comprising the following steps:
Step S101: under normal temperature environment, vehicle is accelerated into default initial velocity；
Step S102: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S103: under normal temperature environment, vehicle is accelerated into default test speed；
In the embodiment of the present invention, above-mentioned default test speed is since default initial velocity with the increase of identical rate of rise
Several test speed values；
Step S104: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default test speed, and record brake duration of the vehicle under default test speed；
Step S105: according to the vehicle brake piece measured under default initial velocity and the default test speed respectively
The vehicle brake duration of wear intensity and record, assesses the reliability of brake and drive system for vehicle with tow.
In implementation process, before step S101, need to carry out prestowage to vehicle, so that automobile front-axle load is specified
Maximum load, rear axle load are the 80% of specified maximum load.
After step s 104, the brake system temperature of vehicle is risen to by test temperature by electric boiling plate；Wherein, it tries
Testing temperature is since room temperature with several raised test temperature values of fixed climbing speed；Under test temperature, by vehicle
Accelerate to default initial velocity；Slowing-down brake is carried out to vehicle, after vehicle stops, measuring vehicle brake block under test temperature
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；It, will under test temperature
Vehicle accelerates default test speed；Slowing-down brake is carried out to vehicle, after vehicle stops, measuring vehicle brake under test temperature
Wear intensity of the piece under default initial velocity, and record brake duration of the vehicle under default initial velocity；According to respectively pre-
If the wear intensity of the vehicle brake piece measured under initial velocity and default test speed and the vehicle brake duration of record, to vehicle
The reliability of brake system is assessed, specifically: according to being measured under default initial velocity and default test speed respectively
Room temperature and test temperature in the wear intensity of vehicle brake piece and the vehicle brake duration of record, to brake and drive system for vehicle with tow can
It is assessed by property.
Further, room temperature is 25 DEG C, and test temperature is respectively 30 DEG C, 35 DEG C and 40 DEG C, the upper raising speed of test temperature
Rate is to rise 5 DEG C every time.
Optionally, after step s 104, the brake system humidity of vehicle can also be adjusted to test by humidifier
Humidity；Wherein, test humidity includes the equal humidity value of several differences；In the case where testing humidity, vehicle is accelerated to default first
Beginning speed；Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is in default initial speed under measurement test humidity
Wear intensity under degree, and record brake duration of the vehicle under default initial velocity；In the case where testing humidity, vehicle is accelerated to pre-
If test speed；Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is being preset just under measurement test humidity
Wear intensity under beginning speed, and record brake duration of the vehicle under default initial velocity；According to respectively in default initial velocity
With the vehicle brake duration of the wear intensity of vehicle brake piece and record that are measured under default test speed, to brake and drive system for vehicle with tow
Reliability assessed, specifically: according to the test humidity measured under default initial velocity and default test speed respectively
The wear intensity of middle vehicle brake piece and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
Further, test humidity is 70%rh, 75%rh, 80%rh and 85%rh.
In the present embodiment, preset initial velocity be 60 kilometers per hour, preset test speed be 70 kilometers per hour, it is 80 public
In per hour, 90 kilometers per hour, 100 kilometers per hour, 110 kilometers per hour and 120 kilometers per hour, preset test speed
The rate of rise of degree is to increase by 10 kilometers every time per hour.
Through the above steps, the reliability of brake system is assessed in conjunction with the wear intensity of brake block and brake duration, greatly
Enhance the accuracy of brake and drive system for vehicle with tow reliability test result.
In order to keep technical solution of the present invention and implementation method clearer, below in conjunction with preferred embodiment in fact
Existing process is described in detail.
Embodiment one
The present embodiment provides the reliability test methods of another brake and drive system for vehicle with tow, as shown in Fig. 2, Fig. 2 is according to this
The flow chart of the reliability test method of another brake and drive system for vehicle with tow of inventive embodiments one, comprising the following steps:
Step S201: carrying out prestowage to vehicle, so that automobile front-axle load is specified maximum load, rear axle load is specified
The 80% of maximum load；
Step S202: under normal temperature environment, vehicle is accelerated into default initial velocity；
In the embodiment of the present invention, above-mentioned default initial velocity be 60 kilometers per hour；
Step S203: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S204: under normal temperature environment, vehicle is accelerated into default test speed；
In the embodiment of the present invention, above-mentioned default test speed is since default initial velocity with the increase of identical rate of rise
Several test speed values；Default test speed be 70 kilometers per hour, 80 kilometers per hour, 90 kilometers per hour, it is 100 public
In per hour, 110 kilometers per hour and 120 kilometers per hour, the rate of rise for presetting test speed is that increase by 10 every time public
In per hour；
Step S205: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default test speed, and record brake duration of the vehicle under default test speed；
Step S206: the brake system temperature of vehicle is risen to by test temperature by electric boiling plate；
In the embodiment of the present invention, above-mentioned test temperature is since room temperature with several the raised examinations of fixed climbing speed
Test temperature value；Room temperature is 25 DEG C, and test temperature is respectively 30 DEG C, 35 DEG C and 40 DEG C, and the climbing speed of test temperature is each
Rise 5 DEG C；
Step S207: under test temperature, vehicle is accelerated into default initial velocity；
Step S208: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under test temperature and exists
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S209: under test temperature, vehicle is accelerated into default test speed；
Step S210: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under test temperature and exists
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S211: according in the room temperature and test temperature measured under default initial velocity and default test speed respectively
The wear intensity of vehicle brake piece and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
In the embodiment of the present invention, by changing the temperature of brake and drive system for vehicle with tow, reliability test is then carried out again, can be made
Reliability test experimental enviroment it is more abundant, the reliability test environment of brake and drive system for vehicle with tow is more nearly that vehicle is practical to be driven
The environment sailed, the reliability test result obtained in this way can be more accurate.
Embodiment two
The present embodiment provides the reliability test methods of another brake and drive system for vehicle with tow, as shown in figure 3, Fig. 3 is according to this
The flow chart of the reliability test method of another brake and drive system for vehicle with tow of inventive embodiments two, comprising the following steps:
Step S301: carrying out prestowage to vehicle, so that automobile front-axle load is specified maximum load, rear axle load is specified
The 80% of maximum load；
Step S302: under normal temperature environment, vehicle is accelerated into default initial velocity；
In the embodiment of the present invention, above-mentioned default initial velocity be 60 kilometers per hour；
Step S303: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S304: under normal temperature environment, vehicle is accelerated into default test speed；
In the embodiment of the present invention, if default test speed is to be increased since default initial velocity with identical rate of rise
Dry test speed value；Default test speed be 70 kilometers per hour, 80 kilometers per hour, 90 kilometers per hour, 100 kilometers it is every
Hour, 110 kilometers per hour and 120 kilometers per hour, the rate of rise for presetting test speed be increase every time 10 kilometers it is every
Hour；
Step S305: carrying out slowing-down brake to vehicle, after vehicle stops, measuring vehicle brake block under normal temperature environment and exists
Wear intensity under default test speed, and record brake duration of the vehicle under default test speed；
Step S306: the brake system humidity of vehicle is adjusted to by test humidity by humidifier；
In the embodiment of the present invention, test humidity includes the equal humidity value of several differences；Test humidity be 70%rh,
75%rh, 80%rh and 85%rh；
Step S307: in the case where testing humidity, vehicle is accelerated into default initial velocity；
Step S308: carrying out slowing-down brake to vehicle, and after vehicle stops, vehicle brake block exists under measurement test humidity
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S309: in the case where testing humidity, vehicle is accelerated into default test speed；
Step S310: carrying out slowing-down brake to vehicle, and after vehicle stops, vehicle brake block exists under measurement test humidity
Wear intensity under default initial velocity, and record brake duration of the vehicle under default initial velocity；
Step S311: it is stopped according to vehicle in the test humidity measured under default initial velocity and default test speed respectively
The wear intensity of vehicle piece and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
In the embodiment of the present invention, change the humidity of brake and drive system for vehicle with tow by humidifier, then carries out reliability examination again
It tests, the experimental enviroment of reliability test can be made more abundant, the reliability test environment of brake and drive system for vehicle with tow is more nearly
The practical environment driven of vehicle, the reliability test result obtained in this way can be more accurate.
In summary, through the foregoing embodiment, brake and drive system for vehicle with tow is tested at various speeds first under normal temperature environment
To the abrasion condition of brake block and brake duration after brake, the temperature value of brake and drive system for vehicle with tow is then adjusted, in new temperature
To the abrasion condition of brake block and brake duration after re-test brake and drive system for vehicle with tow brakes at various speeds under environment, or
Also the humidity of adjustable brake and drive system for vehicle with tow, test brake and drive system for vehicle with tow brakes at various speeds under humidity after the adjustment
Later to the abrasion condition of brake block and brake duration, by the abrasion condition for the brake block tested in different tests environment
The reliability that brake and drive system for vehicle with tow is assessed with brake duration, greatly improves the accuracy of reliability assessment result.
Claims (7)
1. a kind of reliability test method of brake and drive system for vehicle with tow, which comprises the following steps:
Under normal temperature environment, vehicle is accelerated into default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under normal temperature environment is measured and is preset initially described
Wear intensity under speed, and record brake duration of the vehicle under the default initial velocity；
Under normal temperature environment, vehicle is accelerated into default test speed；Wherein, the default test speed is from described default first
Beginning speed starts several test speed values increased with identical rate of rise；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is in the default test under measurement normal temperature environment
Wear intensity under speed, and record brake duration of the vehicle under the default test speed；
According to the wear intensity of the vehicle brake piece measured under the default initial velocity and the default test speed respectively with
And the vehicle brake duration of record, the reliability of brake and drive system for vehicle with tow is assessed.
2. the method according to claim 1, wherein vehicle is accelerated to default first under normal temperature environment
It is further comprising the steps of before beginning speed:
Prestowage is carried out to vehicle, so that automobile front-axle load is specified maximum load, rear axle load is specified maximum load
80%.
3. according to the method described in claim 2, it is characterized in that, being surveyed after vehicle stops to vehicle progress slowing-down brake
Wear intensity of the vehicle brake block under the default test speed under normal temperature environment is measured, and records vehicle in the default test speed
It is further comprising the steps of after brake duration under degree:
The brake system temperature of vehicle is risen into test temperature by electric boiling plate；Wherein, the test temperature is from room temperature
Start with several raised test temperature values of fixed climbing speed；
Under the test temperature, vehicle is accelerated into the default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under test temperature is measured and is preset initially described
Wear intensity under speed, and record brake duration of the vehicle under the default initial velocity；
Under the test temperature, vehicle is accelerated into the default test speed；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block under test temperature is measured and is preset initially described
Wear intensity under speed, and record brake duration of the vehicle under the default initial velocity；
According to the wear intensity of the vehicle brake piece measured under the default initial velocity and the default test speed respectively with
And the vehicle brake duration of record, the reliability of brake and drive system for vehicle with tow is assessed, specifically:
According to vehicle in the room temperature and test temperature measured under the default initial velocity and the default test speed respectively
The wear intensity of brake block and the vehicle brake duration of record, assess the reliability of brake and drive system for vehicle with tow.
4. according to the method described in claim 3, the test temperature is respectively 30 it is characterized in that, the room temperature is 25 DEG C
DEG C, 35 DEG C and 40 DEG C, the climbing speed of the test temperature is to rise 5 DEG C every time.
5. according to the method described in claim 2, it is characterized in that, being surveyed after vehicle stops to vehicle progress slowing-down brake
Wear intensity of the vehicle brake block under the default test speed under normal temperature environment is measured, and records vehicle in the default test speed
It is further comprising the steps of after brake duration under degree:
The brake system humidity of vehicle is adjusted to test humidity by humidifier；Wherein, the test humidity includes several
The equal humidity value of difference；
Under the test humidity, vehicle is accelerated into the default initial velocity；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is described default initial under measurement test humidity
Wear intensity under speed, and record brake duration of the vehicle under the default initial velocity；
Under the test humidity, vehicle is accelerated into the default test speed；
Slowing-down brake is carried out to vehicle, after vehicle stops, vehicle brake block is described default initial under measurement test humidity
Wear intensity under speed, and record brake duration of the vehicle under the default initial velocity；
According to the wear intensity of the vehicle brake piece measured under the default initial velocity and the default test speed respectively with
And the vehicle brake duration of record, the reliability of brake and drive system for vehicle with tow is assessed, specifically:
According to vehicle brake piece in the test humidity measured under the default initial velocity and the default test speed respectively
Wear intensity and record vehicle brake duration, the reliability of brake and drive system for vehicle with tow is assessed.
6. according to the method described in claim 5, it is characterized in that, the test humidity be 70%rh, 75%rh, 80%rh with
And 85%rh.
7. the method according to claim 1, wherein the default initial velocity be 60 kilometers per hour, it is described
Default test speed be 70 kilometers per hour, 80 kilometers per hour, 90 kilometers per hour, 100 kilometers per hour, 110 kilometers it is every
Hour and 120 kilometers per hour, the rate of rise of the default test speed is to increase by 10 kilometers every time per hour.
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| CN108956156A (en) * | 2018-06-01 | 2018-12-07 | 上汽通用五菱汽车股份有限公司 | The performance test methods and its device of the seized system of vehicle |
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Application publication date: 20191126 |