CN202228158U - Silencer for light truck - Google Patents
Silencer for light truck Download PDFInfo
- Publication number
- CN202228158U CN202228158U CN201120358718XU CN201120358718U CN202228158U CN 202228158 U CN202228158 U CN 202228158U CN 201120358718X U CN201120358718X U CN 201120358718XU CN 201120358718 U CN201120358718 U CN 201120358718U CN 202228158 U CN202228158 U CN 202228158U
- Authority
- CN
- China
- Prior art keywords
- pipe
- silencer
- noise
- silencing apparatus
- light truck
- 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.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 7
- 230000030279 gene silencing Effects 0.000 claims description 22
- 239000011358 absorbing material Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000008030 elimination Effects 0.000 description 6
- 238000003379 elimination reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000003101 oviduct Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to a silencer for light truck, the inner tube of this silencer has adopted toper intake-tube structure, can effectively reduce the air current friction noise, and the perforation density of inner tube front end is great to fill the acoustical absorbent of suitable density in the periphery, be favorable to absorbing high frequency noise (more than 500 Hz). The proper perforation diameter and perforation density of the rear section of the inner pipe can form a resonance sound absorption structure, and the medium-frequency noise is effectively absorbed. The double-layer barrel structure can reduce radiation noise, the oval barrel structure can increase the ground clearance of the silencer, and the silencer can be conveniently arranged on the whole vehicle.
Description
Technical field
The utility model belongs to the automotive muffler technical field, is specifically related to be used for the silencing apparatus of light truck.
Background technique
Tradition light truck silencing apparatus profile is cylindrical, and the silencing apparatus gabarit equates apart from the distance of silencing apparatus axis, in some occasion, and the lower vehicle in chassis for example, columniform silencing apparatus can cause silencing apparatus too little apart from ground range, influences the trafficability ability.The utility model adopts the structure of oval gabarit, can under the condition that does not reduce the silencing apparatus volume, increase the distance apart from ground.Tradition light truck silencing apparatus adopts reactive muffler, and this silencing apparatus centering, low frequency exhaust noise have the effect of eliminating the noise preferably, but bad to high frequency noise noise elimination effect.Development along with engine technology; The corresponding increase of engine speed and extraction flow; The corresponding increase of the frictional noise of vehicle exhaust system, exhaust sound medium-high frequency composition is increasing simultaneously, therefore the noise elimination of frictional noise and high frequency noise is had higher requirement.
The model utility content
To the deficiency more than existing traditional light truck silencing apparatus, the utility model provides a kind of improved silencing apparatus that is used for light truck.
The technological scheme that the utility model adopted is:
A kind of light truck is used silencing apparatus, comprises cylindrical shell, interior pipe, dividing plate I, II, sound absorbing material, plug and two ends end cap; Said drum shaft is provided with suction port to an end, and the other end is provided with relief opening, is divided into former and later two chambers through dividing plate II in the cylindrical shell, is laid with spilehole on the inner pipe wall in the cylindrical shell, and improvement is:
Be provided with tubaeform adapter between said suction port and the interior pipe;
Said front chamber is provided with ring sleeve, is equipped with spilehole on the cover tube wall, is filled with sound absorbing material between sleeve pipe and the barrel wall;
The interior middle part of the pipe of pipe is provided with plug in said, forms leading portion pipe and back segment pipe respectively; The leading portion pipe is positioned at front chamber, and the back segment pipe is positioned at rear chamber;
The center hole cover of said dividing plate II is evenly equipped with through hole on its outer ring on inner pipe.
The gabarit of said silencer cylinder is oval, and its barrel is a double layer construction.
The profile of the utility model adopts oval tube structure can increase the silencing apparatus ground Clearance, improves the car load passing ability.Air inlet tube is taper (oviduct) structure; Reduce the tail gas flow velocity that gets into silencing apparatus, can effectively reduce the gas current friction noise, interior pipe leading portion pipe density of such perforation is bigger; And fill the sound absorbing material of proper density at periphery, help absorbing high-frequency noise (more than the 500Hz).Suitable penetration hole diameter and the density of such perforation of interior pipe back segment pipe can form resonance sound-absorbing structure, effectively absorbed the intermediate frequency noise.The double-layer barrel structure can reduce radiated noise.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the plan view of the utility model.
Fig. 3 is the inlet tube side view of Fig. 2.
Fig. 4 is Fig. 1 central diaphragm II topology view.
Among the figure: pipe, 1.2 front covers, 1.3 dividing plate I, 1.4 sound absorbing materials, 1.5 sleeve pipes, 1.6 dividing plate II, 1.7 cylindrical shells, 1.8 rear end covers, 1.9 plugs, 2 are taken in-1.1.
Embodiment
Embodiment:
Below in conjunction with accompanying drawing, the utility model is done explanation further through embodiment.
A kind of light truck uses the gabarit of the cylindrical shell 1.7 of silencing apparatus as elliptical cylinder-shape, and the ground Clearance is bigger than traditional light truck silencing apparatus ground Clearance of cylindrical tube gabarit, helps improving trafficability.Like Fig. 1, shown in Figure 2, cylindrical shell 1.7 has adopted the double-layer barrel structure, effectively reduces the silencing apparatus internal noise to external radiant.
Be provided with tubaeform adapter 2 between suction port and the interior pipe 1.1; Adopted the taper air intake structure, when Vehicular exhaust gets into silencing apparatus from here, because sectional area slowly becomes greatly; Can reduce the tail gas flow velocity that gets into silencing apparatus; Prevent to produce frictional noise or reduce frictional noise, the variation of sectional area can produce changing impedance in addition, produces the noise elimination effect.The middle part is provided with plug 1.9 in the pipe of interior pipe 1.1, forms leading portion pipe and back segment pipe respectively; The leading portion tube wall of interior pipe 1.1 has intensive aperture and has formed interior pipe leading portion perforation structure; The exhaust noise that comes along airflow direction is propagated through interior pipe leading portion pipe perforation structure; Air column vibrates under acoustic wave action in the aperture; And rub with hole wall, can consume a part of acoustic energy, thereby reduce noise.Sound wave continues to propagate to sleeve pipe 1.5 through behind the aperture, has more intensive aperture on the sleeve pipe 1.5; Therefore the reflective sound wave of sound wave on sleeve pipe 1.5 is very little; To sound absorbing material 1.4, high frequency noise takes place to overflow in sound absorbing material 1.4 to be launched, and interferes with each other through the acoustic wave propagation behind the sleeve pipe 1.5; And cause sound absorbing material vibration, friction, produce the noise elimination effect.Sound absorbing material 1.4 is filled between cylindrical shell 1.7 barrels and the sleeve pipe 1.5 with specific density, to obtain the good sound absorption effect to the CF high frequency noise.Sound wave continues to propagate into rear chamber through the outer ring hole on the dividing plate II1.6, and gets into interior pipe again through the aperture of interior pipe back segment pipe perforation structure, and in this process, sound wave excites the air column on the hole wall to vibrate once more, produces the noise elimination effect.
The utility model test application obtains good noise elimination effect and matching effect to high frequency noise.
Claims (2)
1. a light truck is used silencing apparatus, comprises cylindrical shell, interior pipe, dividing plate I, II, sound absorbing material, plug and two ends end cap; Said drum shaft is provided with suction port to an end, and the other end is provided with relief opening, is divided into former and later two chambers through dividing plate II in the cylindrical shell, is laid with spilehole on the inner pipe wall in the cylindrical shell, it is characterized in that:
Be provided with tubaeform adapter between said suction port and the interior pipe;
Said front chamber is provided with ring sleeve, is equipped with spilehole on the cover tube wall, is filled with sound absorbing material between sleeve pipe and the barrel wall;
The interior middle part of the pipe of pipe is provided with plug in said, forms leading portion pipe and back segment pipe respectively; The leading portion pipe is positioned at front chamber, and the back segment pipe is positioned at rear chamber;
The center hole cover of said dividing plate II is evenly equipped with through hole on its outer ring on inner pipe.
2. a kind of light truck according to claim 1 is used silencing apparatus, it is characterized in that: the gabarit of said silencer cylinder is for oval, and its barrel is a double layer construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120358718XU CN202228158U (en) | 2011-09-23 | 2011-09-23 | Silencer for light truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120358718XU CN202228158U (en) | 2011-09-23 | 2011-09-23 | Silencer for light truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228158U true CN202228158U (en) | 2012-05-23 |
Family
ID=46078746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120358718XU Expired - Fee Related CN202228158U (en) | 2011-09-23 | 2011-09-23 | Silencer for light truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228158U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909343A (en) * | 2016-06-02 | 2016-08-31 | 韩群山 | Muffler of journey-increased type electric hybrid automobile |
| CN105927594A (en) * | 2016-06-22 | 2016-09-07 | 湖南天雁机械有限责任公司 | Muffler of turbocharger |
| CN107605571A (en) * | 2017-09-20 | 2018-01-19 | 重庆隆鑫机车有限公司 | Silencer and its motorcycle |
| CN108194167A (en) * | 2017-12-31 | 2018-06-22 | 重庆固发机械制造有限责任公司 | A kind of silencer for motor vehicle |
| CN111485975A (en) * | 2020-04-21 | 2020-08-04 | 安徽江淮汽车集团股份有限公司 | Coalescence device and automobile exhaust emission system |
-
2011
- 2011-09-23 CN CN201120358718XU patent/CN202228158U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909343A (en) * | 2016-06-02 | 2016-08-31 | 韩群山 | Muffler of journey-increased type electric hybrid automobile |
| CN105909343B (en) * | 2016-06-02 | 2019-02-19 | 韩群山 | Extended-range electricity mixes mobile muffler |
| CN105927594A (en) * | 2016-06-22 | 2016-09-07 | 湖南天雁机械有限责任公司 | Muffler of turbocharger |
| CN107605571A (en) * | 2017-09-20 | 2018-01-19 | 重庆隆鑫机车有限公司 | Silencer and its motorcycle |
| CN107605571B (en) * | 2017-09-20 | 2023-08-25 | 重庆隆鑫机车有限公司 | Muffler and motorcycle thereof |
| CN108194167A (en) * | 2017-12-31 | 2018-06-22 | 重庆固发机械制造有限责任公司 | A kind of silencer for motor vehicle |
| CN111485975A (en) * | 2020-04-21 | 2020-08-04 | 安徽江淮汽车集团股份有限公司 | Coalescence device and automobile exhaust emission system |
| CN111485975B (en) * | 2020-04-21 | 2021-03-30 | 安徽江淮汽车集团股份有限公司 | Coalescence device and automobile exhaust emission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The East Road in Baohe District of Hefei city of Anhui Province, No. 176 230022 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: The East Road in Baohe District of Hefei city of Anhui Province, No. 176 230022 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |