CN105890909A - Device and method for testing dynamic sound tightness of closure member of whole vehicle - Google Patents
Device and method for testing dynamic sound tightness of closure member of whole vehicle Download PDFInfo
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- CN105890909A CN105890909A CN201610278428.1A CN201610278428A CN105890909A CN 105890909 A CN105890909 A CN 105890909A CN 201610278428 A CN201610278428 A CN 201610278428A CN 105890909 A CN105890909 A CN 105890909A
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- closure member
- connecting plate
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- vehicle
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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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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a device and method for testing the dynamic sound tightness of a closure member of a whole vehicle, and the device consists of an air leakage testing system and a supersonic detection system. The air leakage testing system comprises a fan, an air supply flexible pipe, a connecting plate, a silicone tube, and a micromanometer, wherein the fan, the air supply flexible pipe, the connecting plate, the silicone tube and the micromanometer are connected sequentially. The supersonic detection system comprises a supersonic signal generator, a supersonic detector, and a flexible detector. After the air leakage testing system is connected with a to-be-tested vehicle, the air leakage testing system supplies air to the vehicle quantitatively and enables the pressure on the surface of the closure member to reach a specified value. At this moment, a sealing strip of the closure member of the whole vehicle is in a dynamic sealing state, and then the supersonic detection system detects the supersonic leakage of the closure member of the whole vehicle and evaluates the dynamic sealing effect. The device is easy to implement, is low in cost, is simple in test conditions, and is good in result repeatability.
Description
Technical field
The present invention relates to automobile sealed technical field, be specifically related to the method that a pair close property of the dynamic sound of car load closure member carries out testing.
Background technology
Due to the complexity of automobile closure member sealing strip material Yu structure, its compression deflection characteristics not yet has well survey up to now
Metering method can accurately obtain quantitative assessment.Existing finite element analysis and real steering vectors method are all that test automobile is in static shape
The working deformation situation of closure member sealing strip during state, it is impossible to reflection automobile closure member sealing strip during dynamic seal (packing) in actual travel
Duty.Method of testing about dynamic sealing effect is rarely seen, and the thinking carrying out testing at wind tunnel laboratory is feasible, but cost
Expensive.
Summary of the invention
It is an object of the invention to the technical problem for above-mentioned existence, proposition one easily realizes, with low cost, experimental condition is simple
The test device and method of the close property of the dynamic sound of car load closure member single, reproducibility of results is good.
One of goal of the invention of the present invention is to provide the test device of a kind of close property of the dynamic sound of car load closure member, and it is by measurement of leaking out
Test system and ultrasonic wave detecting system two parts composition, with car load phase configuration, collaborative work the while of two cover systems.
Described air leakage rate testing system includes blower fan, ajutage, tosimeter, connecting plate, silica gel tube；Described blower fan and ajutage
Connecting, the port of export of ajutage is connected on connecting plate, and junction seals；Have static pressure interface on described connecting plate, pass through silicon
Sebific duct connects tosimeter；Described connecting plate is used for being sealably coupled to vehicle glazing, and blower fan is for sending wind into car by ajutage
In, tosimeter is used for measuring and showing interior pressure.
Described ultrasonic wave detecting system includes ultrasonic signal acoustical generator, supersonic reflectoscope and detector；Described ultrasonic signal
Acoustical generator is used for being arranged in car, and supersonic reflectoscope is connected with the detector signal of telecommunication, for detecting the ultrasound wave amount of leakage in car.
The two of the goal of the invention of the present invention are to provide the method using upper device to carry out the test of the dynamic sound of car load closure member close property, bag
Include step as follows:
(1) the simulation calculation vehicle to be measured car body surface pressure distribution situation under road running mode, obtains possessing dynamic seal (packing)
The approximate pressure value of the closure member of function；
(2) connecting plate of air leakage rate testing system is installed on vehicle window, and guarantees that connecting plate is good with window seal；
(3) the ultrasonic signal acoustical generator in opening vehicle；
(4) blower fan opening air leakage rate testing system is blown in car, observes the show value of tosimeter, when tosimeter shows simultaneously
Interior pressure reaches to reach Air Quantity Required during expecting pressure, then maintains this air quantity constant；
(5) open supersonic reflectoscope, open detection instrument power supply, parameter is set；
(6) test in front door and tail gate respectively with detector, observe test result by supersonic reflectoscope, to obtain final product
To the ultrasound wave amount of leakage of car load closure member, assess its dynamic sealing effect with this.
The present invention is to use by ultrasound wave amount of leakage in the way of the close property of the dynamic sound weighing car load closure member, i.e. utilizes ultrasound wave
Signal amplitude, the power of amplitude of ultrasonic exports ultrasonic with the numerical monitor of dB μ V, i.e. ultrasonic signal with the voltage of 1 μ V
Power arithmetic mean of instantaneous value in ripple detecting system, numerical value is the biggest, illustrates to reveal the most serious herein, and the close property of sound is the poorest.
After the present invention simulates rationale here is that and air leakage rate testing system be connected with vehicle to be measured of dynamic seal (packing), by the most past
In car, air-supply makes automobile closure member surface reach the pressure specified, and generally vehicle pressure under road running mode, the most whole
The sealing strip of car closure member is i.e. in dynamic seal (packing) state.
The present invention is result based on CFD analytical technology simulation calculation, uses air leakage rate testing system at the row of lab simulation vehicle
Sail operating mode, utilize the ultrasound wave amount of leakage of ultrasonic wave detecting system real steering vectors car load closure member, evaluate its dynamic sealing effect.
Visible, that the present invention has easily realization, with low cost, experimental condition is simple, reproducibility of results is good advantage.
Accompanying drawing explanation
Fig. 1 is that test system connects and test operation schematic diagram；
Wherein, 1 is vehicle to be measured, and 2 is connecting plate, and 3 is air supplying hose, and 4 is silica gel tube, and 5 is tosimeter, and 6 is blower fan,
7 is ultrasonic signal acoustical generator, and 8 is flexible detector, and 9 is holding wire, and 10 is supersonic reflectoscope.
Fig. 2 is ultrasound wave measuring point position view (point position can change accordingly with contour of the vehicle).
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments be merely to illustrate the present invention and not
For limiting the scope of the present invention.In addition, it is to be understood that after having read the content of present invention statement, those skilled in the art can
To make various changes or modifications the present invention, these equivalent form of values fall within the application appended claims limited range equally.
Seeing Fig. 1, the test device of the present invention is made up of air leakage rate testing system and ultrasonic wave detecting system two parts, measurement of leaking out
Test system includes blower fan 6, air supplying hose 3, tosimeter 5, connecting plate 2 and silica gel tube 4, and ultrasonic wave detecting system includes that ultrasound wave is believed
Number acoustical generator 7, supersonic reflectoscope 10 and flexible detector 8.
Install and testing procedure be as follows:
Step one, utilize the CFD analytical technology simulation calculation vehicle to be measured 1 car body surface pressure distribution feelings under road running mode
Condition, obtains the approximate pressure value possessing the closure member of dynamic seal (packing) function, generally negative value.
Step 2, according to the glass for vehicle window shape of vehicle 1 to be measured and the jointing chi of the air supplying hose 3 of air leakage rate testing system
Very little, make a connecting plate 2 and connect air supplying hose 3, it is ensured that air supplying hose 3 and the junction good seal of connecting plate 2, plate is gone back
Caliber according to silica gel tube 4 opens an aperture as static pressure interface.
Step 3, with adhesive tape connecting plate 2 it is fixed on the back door vehicle window of vehicle 1 to be measured and fills up residue space, it is ensured that connecting plate 2
Good with window seal；
Step 4, connect static pressure interface on connecting plate 2 tosimeter 5 with monitoring pressure with silica gel tube 4.
Step 5, open ultrasonic signal acoustical generator 7, in being sequentially placed in vehicle 1 to be measured on passage between gear level and parking brake and
In the middle of back seat.
Step 6, the blower fan 6 of unlatching air leakage rate testing system are blown in vehicle 1 to be measured, observe the show value of tosimeter 5 simultaneously.
When tosimeter 5 shows that interior pressure has reached Air Quantity Required when having reached expecting pressure, then maintain this air quantity constant.
Step 7, connect flexible detector 8 and supersonic reflectoscope 10 with holding wire 9, open the power supply of supersonic reflectoscope 10,
Parameter is set:
1) frequency range is selected: standard frequency range 20k-40k.
2) test mode: continuous print.
Step 8, the right hand are held flexible detector 8 and are tested in the front door of vehicle 1 to be measured and tail gate respectively, left hand-held ultrasound
Ripple detector 10 observes the test result of its liquid crystal screen display.Specifically, the probe of flexible detector 8 car load will be pointed to successively
The test position of closure member, sees Fig. 2, the round dot being distributed in figure and point position, these test positions carries out point-like scanning and surveys
Examination, stablizes reading after 3 seconds.The result of test is the ultrasound wave amount of leakage of car load closure member, assesses its dynamic seal (packing) effect with this
Really.
Claims (5)
1. a test device for the close property of the dynamic sound of car load closure member, is made up of air leakage rate testing system and ultrasonic wave detecting system two parts；It is characterized in that, described air leakage rate testing system includes blower fan, ajutage, tosimeter, connecting plate, silica gel tube；
Described blower fan is connected with ajutage, and the port of export of air supplying hose is connected on connecting plate, and junction seals；Have static pressure interface on described connecting plate, connect tosimeter by silica gel tube；Described connecting plate is used for being sealably coupled to vehicle glazing, and blower fan is for sending in car by ajutage by wind, and tosimeter is used for measuring and showing interior pressure；
Described ultrasonic wave detecting system includes ultrasonic signal acoustical generator, supersonic reflectoscope and detector；Described ultrasonic signal acoustical generator is used for being arranged in car, and supersonic reflectoscope is connected with the detector signal of telecommunication, for detecting the ultrasound wave amount of leakage in car.
2. use the method that the device described in claim 1 carries out the test of the dynamic sound of car load closure member close property, it is characterised in that comprise the following steps that
(1) the simulation calculation vehicle to be measured car body surface pressure distribution situation under road running mode, obtains the approximate pressure value possessing the closure member of dynamic seal (packing) function；
(2) connecting plate of air leakage rate testing system is installed on vehicle window, and guarantees that connecting plate is good with window seal；
(3) the ultrasonic signal acoustical generator in opening vehicle；
(4) blower fan opening air leakage rate testing system is blown in car, observes the show value of tosimeter simultaneously, reaches Air Quantity Required when tosimeter display interior pressure reaches expecting pressure, then maintains this air quantity constant；
(5) open supersonic reflectoscope, open detection instrument power supply, parameter is set；
(6) test in front door and tail gate respectively with detector, observe test result by supersonic reflectoscope, i.e. obtain the ultrasound wave amount of leakage of car load closure member, assess its dynamic sealing effect with this.
Method the most according to claim 1, it is characterised in that the described vehicle to be measured car body surface pressure distribution situation under road running mode is to utilize CFD analytical technology simulation calculation to obtain.
Method the most according to claim 1, it is characterised in that described ultrasonic signal acoustical generator be sequentially placed in car on passage between gear level and parking brake and in the middle of back seat.
Method the most according to claim 1, it is characterised in that described step (6) is that the probe of detector points to the test position of car load closure member successively, and test position is carried out point-like sweep test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278428.1A CN105890909A (en) | 2016-04-29 | 2016-04-29 | Device and method for testing dynamic sound tightness of closure member of whole vehicle |
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| CN201610278428.1A CN105890909A (en) | 2016-04-29 | 2016-04-29 | Device and method for testing dynamic sound tightness of closure member of whole vehicle |
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| CN105890909A true CN105890909A (en) | 2016-08-24 |
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| CN201610278428.1A Pending CN105890909A (en) | 2016-04-29 | 2016-04-29 | Device and method for testing dynamic sound tightness of closure member of whole vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226397A (en) * | 2016-08-31 | 2016-12-14 | 江苏金坛长荡湖新能源科技有限公司 | A kind of arrangements for automotive doors acoustics leakage performance method of testing |
| CN108645594A (en) * | 2018-07-23 | 2018-10-12 | 吉林大学 | A kind of wind tunnel test simplification car model for research of making an uproar for interior wind |
| CN109253886A (en) * | 2017-07-15 | 2019-01-22 | 上海汽车集团股份有限公司 | The detection method and detection system of vehicle dynamic sealing performance |
| CN110541813A (en) * | 2019-09-02 | 2019-12-06 | 苏州绿控传动科技股份有限公司 | real-vehicle test method for water pump for new energy automobile |
| CN112393910A (en) * | 2019-08-14 | 2021-02-23 | 北京新能源汽车股份有限公司 | Sound tightness performance analysis method and device and upper computer |
| CN115435984A (en) * | 2022-09-21 | 2022-12-06 | 东风汽车集团股份有限公司 | Rack simulation test analysis method for dynamic sealing performance of automobile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226397A (en) * | 2016-08-31 | 2016-12-14 | 江苏金坛长荡湖新能源科技有限公司 | A kind of arrangements for automotive doors acoustics leakage performance method of testing |
| CN109253886A (en) * | 2017-07-15 | 2019-01-22 | 上海汽车集团股份有限公司 | The detection method and detection system of vehicle dynamic sealing performance |
| CN109253886B (en) * | 2017-07-15 | 2021-01-15 | 上海汽车集团股份有限公司 | Detection method and detection system for dynamic sealing performance of vehicle |
| CN108645594A (en) * | 2018-07-23 | 2018-10-12 | 吉林大学 | A kind of wind tunnel test simplification car model for research of making an uproar for interior wind |
| CN112393910A (en) * | 2019-08-14 | 2021-02-23 | 北京新能源汽车股份有限公司 | Sound tightness performance analysis method and device and upper computer |
| CN110541813A (en) * | 2019-09-02 | 2019-12-06 | 苏州绿控传动科技股份有限公司 | real-vehicle test method for water pump for new energy automobile |
| CN115435984A (en) * | 2022-09-21 | 2022-12-06 | 东风汽车集团股份有限公司 | Rack simulation test analysis method for dynamic sealing performance of automobile |
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Application publication date: 20160824 |
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