CN105316989B - A kind of laying method on internal car noise test bad road, internal car noise method of testing - Google Patents
A kind of laying method on internal car noise test bad road, internal car noise method of testing Download PDFInfo
- Publication number
- CN105316989B CN105316989B CN201410282613.9A CN201410282613A CN105316989B CN 105316989 B CN105316989 B CN 105316989B CN 201410282613 A CN201410282613 A CN 201410282613A CN 105316989 B CN105316989 B CN 105316989B
- Authority
- CN
- China
- Prior art keywords
- test
- millimeters
- road
- internal car
- car noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention provides a kind of internal car noise test bad road and its laying method, internal car noise method of testing, wherein, internal car noise test bad road includes the surface layer that thickness is 120 millimeters, and the surface layer is included by weight 2:1 ratio is mixed, particle diameter is respectively to be filled with modified pitch between the building stones of 25 millimeters and 20 millimeters, the building stones.The present invention designs and the road surface parameter on bad road is determined, increase and perfect test road surface, by testing internal car noise on bad road, for reduction internal car noise provides it is a kind of test and evaluation of programme, improve vehicle level of NVH, make properties of product more competitive.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of internal car noise test bad road and its laying method, internal car noise
Method of testing.
Background technology
Vehicle Interior Noise is typically influenceed larger by the roughness of road surface structure, and automobile is with identical speed in roughness
Travelled on different roads, internal car noise and speech intelligibility are all different.When automobile with medium speed in motion, usual car
Interior noise is made an uproar essentially from tire and wind, if travelled on more coarse cement road, in addition to tire is made an uproar and made an uproar with wind, is also had
The low-frequency noise produced is encouraged to vehicle from road surface.Most of automobiles have the problem of low-frequency noise is big, in order to preferably grind
The problem is studied carefully, in auto NVH（Noise, Vibration, Harshness, noise, vibration and comfortableness）It is bad in development process
Road noise testing is to examine one of method of internal car noise, and vehicle travels hour wheel tire on bad road and encouraged by road surface, causes
The increase of in-car low-frequency noise, passes through the internal car noise on test bad road, it can be deduced that the internal car noise level on bad road and frequency into
Point.
At present inside major proving grounds in addition to performance road, other road surfaces are not suitable for carrying out automobile noise test, such as
The pavement strengths such as Belgian road, washboard road and resonance road are larger, are mainly used to test vehicle durability, it is impossible to test out well
The noise level of vehicle；And performance road is more smooth, it is adapted to development wind and makes an uproar and accelerate internal car noise to test, but can not fully encourage
In-car low-frequency noise.Therefore, internal car noise is studied, it is necessary to a surface roughness be designed than coarse road greatly, than resistance in order to comprehensive
Long road（Such as washboard road, road paved with oval stones）Small road, to carry out internal car noise test on this basis.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of internal car noise test bad road and its laying method, car
Interior noise testing method, is easy to low-frequency noise in test carriage.
In order to solve the above-mentioned technical problem, the present invention provides a kind of internal car noise test bad road, including thickness is 120 millimeters
Surface layer, the surface layer includes by weight 2:1 ratio is mixed, particle diameter is respectively the building stones of 25 millimeters and 20 millimeters, described
Modified pitch is filled between building stones.
Wherein, the voidage of the surface layer is 8.5%, and construction depth is 10.24 millimeters.
Wherein, the test bad road laying width is 3 meters, and laying length is 80 ~ 100 meters.
The present invention also provides a kind of laying method on internal car noise test bad road, including：
Step S31, soil matrix is compacted using heavy road roller；
Step S32, lays granular sub-base on soil matrix；
Step S33, lays cement stabilizing layer on granular sub-base；
Step S34, a coating emulsified asphalt sticking layer oil of being splashed on cement stabilizing layer；
Step S35, asphalt macadam-aggregate mix layer；
Step S36, the bituminous concrete moxture layer on, by particle diameter be respectively 25 millimeters and 20 millimeters building stones by weigh
Amount compares 2:1 ratio is mixed, and the filling-modified pitch between the building stones, forms the surface layer that thickness is 120 millimeters.
Wherein, the voidage of the surface layer is 8.5%, and construction depth is 10.24 millimeters.
Wherein, the test bad road laying width is 3 meters, and laying length is 80 ~ 100 meters.
The present invention also provides a kind of internal car noise method of testing, including：
Step S41 is there is provided a kind of internal car noise test bad road, and the bad road includes the surface layer that thickness is 120 millimeters, described
Surface layer is included by weight 2:1 ratio is mixed, particle diameter is respectively filled with modification between the building stones of 25 millimeters and 20 millimeters, building stones
Pitch；
Step S42, carries out test preparation；
Step S43, test vehicle is at the uniform velocity travelled with 40km/h speed on the test road surface；
Noise data and handled in step S44, collecting vehicle.
Wherein, the voidage of the surface layer is 8.5%, and construction depth is 10.24 millimeters.
Wherein, the test bad road laying width is 3 meters, and laying length is 80 ~ 100 meters.
Wherein, in the step S43, the gear of the test vehicle selects the most high-grade of energy steady operation.
Implementing the beneficial effect of the invention brought is：The present invention designs and the road surface parameter on bad road is determined, increase and
Perfect test road surface, by testing internal car noise on bad road, for reduction internal car noise provides it is a kind of test and evaluation of programme,
Vehicle level of NVH is improved, makes properties of product more competitive.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the cross section structure schematic diagram that a kind of internal car noise of the embodiment of the present invention one tests road surface.
Fig. 2 is the another cross section structure schematic diagram that a kind of internal car noise of the embodiment of the present invention one tests road surface.
Fig. 3 is a kind of schematic flow sheet of the laying method on the internal car noise of the embodiment of the present invention two test road surface.
Fig. 4 is a kind of schematic flow sheet of internal car noise method of testing of the embodiment of the present invention three.
Fig. 5 is point position schematic diagram in the embodiment of the present invention three.
Embodiment
Below with reference to the accompanying drawings the preferred embodiments of the present invention are described.
It refer to shown in Fig. 1, the embodiment of the present invention one provides a kind of internal car noise test bad road, including thickness is 120 millis
The surface layer 1 of rice, the surface layer is included by weight 2:1 ratio mixing, particle diameter be respectively 25 millimeters and 20 millimeters building stones 11,
12, modified pitch 13 is filled between building stones.Specifically, the particle diameter of building stones 11 is 25 millimeters, and the particle diameter of building stones 12 is 20 millimeters, stone
The weight ratio of material 11 and building stones 12 is 2:1.
The voidage of the surface layer 1 is 8.5%, and construction depth is 10.24 millimeters.In addition, considering laying cost and test
Convenient, the test road surfacing width of the present embodiment is 3 meters, and laying length is 80 ~ 100 meters, preferably 100 meters.
The constituent of internal car noise and the relation of speed are：Low speed main contributions come from power assembly, during medium speed
Made an uproar essentially from tire, wind is made an uproar and body structure low-frequency noise, be mainly tire during high speed and make an uproar and made an uproar with wind.Exist in view of vehicle
GB18697-2002（In-car at the uniform velocity noise testing standard, is one and is specifically used to measure in-car when specification passenger car is at the uniform velocity travelled
The national standard of noise, the standard provides to measure the side of internal car noise when vehicle is at the uniform velocity travelled with different speeds in smooth road
Method, content includes test condition, measuring point, measurement condition, measuring process and data processing method etc.）On defined smooth road in
When being travelled etc. speed, it is impossible to well encourage in-car low-frequency noise, the internal car noise test bad road that the present embodiment is provided,
Employed on the construction of surface layer by particle diameter be respectively 25 millimeters and 20 millimeters building stones, by weight 2:1 ratio is mixed, so that shape
Into so-called " bad road ", its roughness is between coarse road and durable road.When vehicle is with middle low speed（Such as 40km/h）At the uniform velocity exist
Travelled on this bad road, can just evoke the construct noise within in-car low-frequency noise, particularly 200Hz.By testing this bad road
Under internal car noise, analyzed with reference to the structural frequency response of vehicle chassis, can be very good to determine noise source, and for rectification scheme
There is provided and instruct with examining.
As can be seen here, present invention increase and perfect test road surface, by the test road surface constructed by the present embodiment
Internal car noise is tested, a kind of test and evaluation of programme is provided for reduction internal car noise, improves vehicle level of NVH, make product
Can be more competitive.
Compared with other existing test road surfaces, the test bad road of the present embodiment is mainly improved as the most upper of pavement structure
The surface layer 1 of layer（The work repeatedly of pull of vacuum produced by after its vertical force for directly bearing traffic load, horizontal force and vehicle body
With while being influenceed by rainfall and temperature Change）Construction, as an example, refer to shown in Fig. 2, the survey of the present embodiment
Shi Huai roads also include successively from bottom to top：
Soil matrix 2, by heavy standard compaction, compactness >=95%；
Underlayment 3, the thick rubble by particle diameter at 5-15 centimetres is constituted, and the thickness of underlayment is 60 centimetres；
The GSZ 4 at the top of underlayment is arranged on, in length and breadth tensile strength ＞ 10KN/m；
Cement stabilizing layer, further comprises lower stabilized zone 51 and upper stabilized zone 52, and the lower thickness of stabilized zone 51 is 30 centimetres, water
Cement content is 4%, and the upper thickness of stabilized zone 52 is 20 centimetres, and cement content is 6%；
Emulsification pitch penetration 6, Asphalt emulsion content is 0.7 ~ 1.1kg/m2；
Bituminous concrete moxture layer 7, thickness is 9 millimeters.
Wherein, surface layer 1 is arranged on bituminous concrete moxture layer 7.
Referring again to shown in Fig. 3, the embodiment of the present invention two provides a kind of laying method on internal car noise test bad road, bag
Include：
Step S31, soil matrix is compacted using heavy road roller；
Step S32, lays granular sub-base on soil matrix；
Step S33, lays cement stabilizing layer on granular sub-base；
Step S34, a coating emulsified asphalt sticking layer oil of being splashed on cement stabilizing layer；
Step S35, asphalt macadam-aggregate mix layer；
Step S36, bituminous concrete moxture layer on, by particle diameter be respectively 25 millimeters and 20 millimeters of building stones by weight
2:1 ratio is mixed, and the filling-modified pitch between building stones, forms the surface layer that thickness is 120 millimeters.
The voidage of the surface layer is 8.5%, and construction depth is 10.24 millimeters.In addition, considering laying cost and test
Convenient, the test road surfacing width of the present embodiment is 3 meters, and laying length is 80 ~ 100 meters, preferably 100 meters.
It should be noted that in the laying method of the present embodiment, step S31-S35 with existing road surfacing method without
It is different, including common such as detection level degree, compactness, shakeout, the operation such as detection thickness, intensity, here is omitted.This reality
Apply example it is improved be surface layer laying, be respectively the building stones of 25 millimeters and 20 millimeters by particle diameter, by weight 2:1 ratio is mixed
Close, so as to form so-called " bad road ", its roughness is between coarse road and durable road.When vehicle is with middle low speed（Such as 40km/
h）At the uniform velocity travelled herein on bad road, can just evoke the construct noise within in-car low-frequency noise, particularly 200Hz.By surveying
Internal car noise under Shi Cihuai roads, is analyzed with reference to the structural frequency response of vehicle chassis, can be very good to determine noise source, and be
Rectification scheme, which is provided, to be instructed with examining.
Again as shown in figure 4, the embodiment of the present invention three provides a kind of internal car noise method of testing, including：
Step S41 is there is provided a kind of internal car noise test bad road, and the road surface includes the surface layer that thickness is 120 millimeters, the surface layer
Including by weight 2:1 ratio is mixed, particle diameter is respectively filled with modified drip between the building stones of 25 millimeters and 20 millimeters, building stones
It is blue or green；
Step S42, carries out test preparation；
Step S43, test vehicle is at the uniform velocity travelled with 40km/h speed on test road surface；
Noise data and handled in step S44, collecting vehicle.
In step S41, the voidage of surface layer is 8.5%, and construction depth is 10.24 millimeters.It is laid in addition, considering
This and test are facilitated, and the test road surfacing width of the present embodiment is 3 meters, and laying length is 80 ~ 100 meters, preferably 100 meters.
Step S42 is then similar to existing method of testing, relates generally to test condition and the confirmation of test vehicle, test equipment standard
It is standby with installing etc., be illustrated below：
（1）Confirm that meteorological condition is good, the bad weather such as no rain, snow, hail, earth's surface above 1.2m height wind speed peak value is not
More than 5m/s, the not super many 3m/s of mean wind speed in 10s, environment temperature is at -5 DEG C~38 DEG C；
（2）Confirm that ambient noise meets test request, the noise being made up of ambient noise and tester internal sound should
At least below tested sound 10dB (A)；
（3）Exact p-value vehicle meets entire vehicle design requirement, and bodywork surface is clean and tidy, without other foreign matters, spare tyre, driver's tool
Fixed, test vehicle all liq medium includes coolant, brake fluid, lubricating oil, power steering fluid and added by design requirement
Note, fuel filling is to mailbox volume more than 1/4, vehicle at least break-in 1500km；
（4）All service conditions of engine, such as fuel, lubricating oil, ignition timing or injection time all should comply with
Current vehicle technical conditions, engine should be stablized in normal operating temperature range（About 90 DEG C）；
（5）Tire pressure has to comply with vehicle technical conditions, and tire should be relatively new, and decorative pattern is without noticeable wear（Should not particularly
There is eccentric wear）；
（6）The primary condition of car load should comply with 4.4 or 4.6 regulation in GB/T3730.2-1996, and in-car is removed
Outside driver, tester and test equipment, other staff are not sat or other articles should not be placed.Opening, it is such as skylight, all
Vehicle window, air-conditioning inner-outer circulation mouthful, it is necessary to shut；Servicing unit, such as wiper, heater, fan and air-conditioning,
It must not be worked in measurement process of the test；Adjustable seat should adjust design point；
（7）Test equipment is installed, test equipment quantity and parameter specification must not be less than following table：
（8）Measuring point is selected：As shown in figure 5, microphone is arranged in figure 1.~8. position, wherein front-seat from operator seat from a left side
To right arrangement measuring point 1.~4., heel row arrange from left to right measuring point 5.~8., at least arrange 2., 7. two measuring points；
（9）Software parameters are set, from CPB analysis modes, and frequency analysis scope is 20Hz-10kHz, and average mode is line
Property, time 10s；
（10）Calibrate microphone.
Because step S41 provides a kind of novel test bad road, roughness between coarse road and durable road, when vehicle with
Middle low speed（Such as 40km/h）At the uniform velocity travel, can just evoke within in-car low-frequency noise, particularly 200Hz on bad road herein
Construct noise, therefore, in step S43, test vehicle is at the uniform velocity travelled with 40km/h speed on test road surface, you can real
Internal car noise test of the existing the present embodiment under bad road.Analyzed, can be very good really with reference to the structural frequency response of vehicle chassis
Determine noise source, and guidance is provided with examining for rectification scheme.In order to reduce influence of the engine noise to internal car noise, shelves as far as possible
Select the most high-grade of energy steady operation in position.
As step S42, step S44 is also similar to existing method of testing, is only briefly described as follows herein：
（1）To ensure measurement accuracy, before formal gathered data, it should be adjusted using the automatic gain function of data collecting system
The range ability of whole each passage, makes signal scale be in 3/4 or so of full scale scale；
（2）Record three groups of preferable data of uniformity（Conformance definition：Sound pressure level total value and spectrum curve difference are no more than
2dB(A）；
（3）The uniformity of data is checked again, and one group of data in choosing three data reclaimed waters in normal times are handled, and are remembered
Record corresponding sound pressure level and lamprophonia degrees of data.
By described above, the present invention designs and the road surface parameter on bad road is determined, increase and perfect test road
Face, by testing internal car noise on bad road, provides a kind of test and evaluation of programme for reduction internal car noise, improves vehicle
Level of NVH, makes properties of product more competitive.
Above disclosure is only preferred embodiment of present invention, can not limit the right model of the present invention with this certainly
Enclose, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (7)
1. a kind of laying method on internal car noise test bad road, including：
Step S31, soil matrix is compacted using heavy road roller；
Step S32, lays granular sub-base on soil matrix；
Step S33, lays cement stabilizing layer on granular sub-base；
Step S34, a coating emulsified asphalt sticking layer oil of being splashed on cement stabilizing layer；
Step S35, asphalt macadam-aggregate mix layer；
Step S36, the bituminous concrete moxture layer on, by particle diameter be respectively 25 millimeters and 20 millimeters of building stones by weight
2:1 ratio is mixed, and the filling-modified pitch between the building stones, forms the surface layer that thickness is 120 millimeters.
2. laying method according to claim 1, it is characterised in that the voidage of the surface layer is 8.5%, construction depth
For 10.24 millimeters.
3. laying method according to claim 1, it is characterised in that the test bad road laying width is 3 meters, laying length
Spend for 80 ~ 100 meters.
4. a kind of internal car noise method of testing, including：
Step S41 is there is provided a kind of internal car noise test bad road, and the bad road includes the surface layer that thickness is 120 millimeters, the surface layer
Including by weight 2:1 ratio is mixed, particle diameter is respectively filled with modified drip between the building stones of 25 millimeters and 20 millimeters, building stones
It is blue or green；
Step S42, carries out test preparation；
Step S43, test vehicle is at the uniform velocity travelled with 40km/h speed on the test road surface；
Noise data and handled in step S44, collecting vehicle.
5. method of testing according to claim 4, it is characterised in that the voidage of the surface layer is 8.5%, construction depth
For 10.24 millimeters.
6. method of testing according to claim 4, it is characterised in that the test bad road laying width is 3 meters, laying length
Spend for 80 ~ 100 meters.
7. method of testing according to claim 4, it is characterised in that in the step S43, the gear of the test vehicle
Select the most high-grade of energy steady operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282613.9A CN105316989B (en) | 2014-06-23 | 2014-06-23 | A kind of laying method on internal car noise test bad road, internal car noise method of testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282613.9A CN105316989B (en) | 2014-06-23 | 2014-06-23 | A kind of laying method on internal car noise test bad road, internal car noise method of testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105316989A CN105316989A (en) | 2016-02-10 |
| CN105316989B true CN105316989B (en) | 2017-11-07 |
Family
ID=55245235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410282613.9A Active CN105316989B (en) | 2014-06-23 | 2014-06-23 | A kind of laying method on internal car noise test bad road, internal car noise method of testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105316989B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106446423B (en) * | 2016-09-27 | 2019-12-13 | 广州汽车集团股份有限公司 | vehicle body structure optimization design method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538823A (en) * | 2009-04-24 | 2009-09-23 | 刘廷国 | Road surface low-noise micro-surfacing functional layer and construction method thereof |
| KR20110061316A (en) * | 2009-12-01 | 2011-06-09 | 한국타이어 주식회사 | Variableness text road surface for vehicle |
| CN102691244A (en) * | 2012-05-30 | 2012-09-26 | 中铁四局集团有限公司 | Construction method of noise type asphalt pavement |
| CN204151641U (en) * | 2014-06-23 | 2015-02-11 | 广州汽车集团股份有限公司 | A kind of internal car noise test bad road |
-
2014
- 2014-06-23 CN CN201410282613.9A patent/CN105316989B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538823A (en) * | 2009-04-24 | 2009-09-23 | 刘廷国 | Road surface low-noise micro-surfacing functional layer and construction method thereof |
| KR20110061316A (en) * | 2009-12-01 | 2011-06-09 | 한국타이어 주식회사 | Variableness text road surface for vehicle |
| CN102691244A (en) * | 2012-05-30 | 2012-09-26 | 中铁四局集团有限公司 | Construction method of noise type asphalt pavement |
| CN204151641U (en) * | 2014-06-23 | 2015-02-11 | 广州汽车集团股份有限公司 | A kind of internal car noise test bad road |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105316989A (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Paje et al. | Road pavement rehabilitation using a binder with a high content of crumb rubber: Influence on noise reduction | |
| CN104141275B (en) | A kind of highway road table antiskid skin texture detection instrument | |
| Lebens et al. | Porous asphalt pavement performance in cold regions | |
| CN105297576B (en) | A kind of internal car noise test pavement and its laying method, internal car noise method of testing | |
| CN107679352A (en) | A kind of bituminous paving supporting course design of material method based on structure function demand | |
| CN107917814A (en) | It is a kind of that the durable experimental rig of real vehicle road Pascal and method are simulated on rack | |
| CN204151642U (en) | A kind of internal car noise test road surface | |
| CN103524061A (en) | Micro-surfacing mixture mineral aggregate grading optimization design method | |
| CN105136283B (en) | Test device and noise indoor test method in micro-surfacing mixture noise room | |
| CN204151641U (en) | A kind of internal car noise test bad road | |
| CN105316989B (en) | A kind of laying method on internal car noise test bad road, internal car noise method of testing | |
| CN103184717A (en) | Method for designing AC-20 asphalt mixture | |
| CN108570907A (en) | The construction method of foamed asphalt cold in place recycling | |
| CN104496285A (en) | Rubber asphalt ultra-thin wearing layer mixture and rubber asphalt ultra-thin wearing layer with effects of reducing noise and increasing skid resistance | |
| CN206208385U (en) | A kind of device for road rumble detection | |
| CN104805748A (en) | Additional paving method for rigid road surface | |
| CN113533130A (en) | Asphalt pavement compaction real-time monitoring method based on intelligent particles | |
| Lu et al. | Laboratory evaluation of the noise and durability properties of asphalt surface mixes | |
| Von Quintus | Evaluation of intelligent compaction technology for densification of roadway subgrades and structural layers | |
| Kowalski et al. | Identification of laboratory technique to optimize Superpave HMA surface friction characteristics | |
| CN207779547U (en) | Noise-measuring system for porous asphalt pavement | |
| CN105651858A (en) | Device and method for testing noise indoors by means of simulating driving of automobile on micro-surfacing road surface | |
| Poulikakos et al. | Mechanical properties of porous asphalt, recommendations for standardization | |
| Dehnad et al. | Evaluating the effect of different asphalt mixtures on hydroplaning using a new lab-scale apparatus | |
| Wang et al. | On-board sound intensity tire-pavement noise study in North Carolina. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |