CN204041164U - The secondary silencing apparatus of motor car engine - Google Patents
The secondary silencing apparatus of motor car engine Download PDFInfo
- Publication number
- CN204041164U CN204041164U CN201420428337.8U CN201420428337U CN204041164U CN 204041164 U CN204041164 U CN 204041164U CN 201420428337 U CN201420428337 U CN 201420428337U CN 204041164 U CN204041164 U CN 204041164U
- Authority
- CN
- China
- Prior art keywords
- cylindrical shell
- chamber
- suction tude
- motor car
- car engine
- 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
- 230000030279 gene silencing Effects 0.000 title claims abstract description 29
- 229920000742 Cotton Polymers 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses the secondary silencing apparatus of a kind of motor car engine, relate to field of automobile, include suction tude cylindrical shell and tube wall being distributed with multiple through hole, described cylindrical shell is divided into first chamber and second chamber inner space along airintake direction by dividing plate, described suction tude is connected with described dividing plate through described first chamber, between described suction tude and described cylindrical shell, be provided with silencing cotton; The air outlet of described cylindrical shell is positioned at described second chamber.Compared with prior art, the utility model can solve the secondary silencing apparatus of existing motor car engine causes noise elimination poor stability problem because silencing cotton filling is uneven.
Description
Technical field
The utility model relates to field of automobile, especially a kind of secondary silencing apparatus of the exhaust passage for automobile large-duty engine.
Background technique
At present, the secondary silencing apparatus of existing automobile engine to exhaust passage includes cylindrical shell and installed the suction tude tube wall of described cylindrical shell being evenly distributed with through hole, between described suction tude and described cylindrical shell, be provided with silencing cotton.In use there are the following problems for the secondary silencing apparatus of this motor car engine: because large-duty engine produces larger pneumatic noise, be typically employed in fill a large amount of silencing cotton between suction tude and cylindrical shell method to reduce noise, secondary silencing apparatus is in batch production process, because hull shape is elongated, often cause noise elimination poor stability because silencing cotton is filled uneven.
Model utility content
The problem that the utility model solves is to provide the secondary silencing apparatus of a kind of motor car engine, causes the problem of noise elimination poor stability to solve the secondary silencing apparatus of existing motor car engine because silencing cotton is filled uneven.
In order to solve the problem, the technical solution adopted in the utility model is: the secondary silencing apparatus of this motor car engine includes suction tude cylindrical shell and tube wall being distributed with multiple through hole, described cylindrical shell is divided into first chamber and second chamber that be provided with air outlet inner space along airintake direction by dividing plate, described suction tude is connected with described dividing plate through described first chamber, between described suction tude and described cylindrical shell, be provided with silencing cotton; The air outlet of described cylindrical shell is positioned at described second chamber.
In the secondary silencing apparatus technological scheme of above-mentioned motor car engine, technological scheme can also be more specifically: described dividing plate is provided with center hole and center hole positioning boss, and the center hole that described suction tude stretches into described dividing plate is connected with described center hole positioning boss.
Further, described cylindrical shell is made up of vertical tube part and the cone cylinder portion that is attached at described vertical tube part two ends respectively.
Owing to have employed technique scheme, the utility model compared with prior art has following beneficial effect: when the waste gas that motor is discharged passes through the first chamber from suction tude, waste gas enters in silencing cotton from the multiple through holes suction tude tube wall, and silencing cotton eliminates the low-frequency noise of high-frequency noise in off-gas flows and a part of frequency range preferably; When off-gas flows enters the second chamber, because the second chamber is an expanssion type muffling unit, can eliminate a part of low-frequency noise again, structure so is in addition for the large motor of pneumatic noise, can more effective loss fraction energy, reduce pneumatic noise.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model example.
Embodiment
Below in conjunction with attached Example, the utility model is described in further detail:
The secondary silencing apparatus of motor car engine as shown in Figure 1 includes the suction tude 2 cylindrical shell 1 and tube wall being distributed with multiple through hole, cylindrical shell 1 is made up of vertical tube part 1-4 and the straight tube two ends cone cylinder portion 1-2 that spinning is formed respectively, cylindrical shell 1 is divided into first chamber and second chamber inner space along airintake direction by dividing plate 4, suction tude 2 is connected with dividing plate 4 through the first chamber, the dividing plate 4 of the present embodiment is provided with center hole and center hole positioning boss, and the center hole that suction tude 2 stretches into dividing plate 4 is connected with center hole positioning boss; Silencing cotton 3 is housed between suction tude 2 and cylindrical shell 1; The air outlet of cylindrical shell 1 is positioned at one end of the second chamber cylindrical shell relative with suction tude 21.
During work, when the waste gas that motor is discharged passes through the first chamber from suction tude 2, off-gas flows enters via the multiple through holes on suction tude tube wall and is filled with in the first chamber of silencing cotton 3, and the low-frequency noise of part high-frequency noise contained in off-gas flows and a part of frequency range can be eliminated by silencing cotton 3; When off-gas flows enters the second chamber, because the second chamber is equivalent to an expansion elements, this structure not only can eliminate a part of low-frequency noise, and due to local resistance increase, can eliminate the portion of energy in waste gas streams, weaken fraction noise.
Claims (3)
1. the secondary silencing apparatus of motor car engine, include the suction tude (2) cylindrical shell (1) and tube wall being distributed with multiple through hole, it is characterized in that: described cylindrical shell (1) is divided into first chamber and second chamber inner space along airintake direction by dividing plate (4), described suction tude (2) is connected with described dividing plate (4) through described first chamber, between described suction tude (2) and described cylindrical shell (1), be provided with silencing cotton; The air outlet of described cylindrical shell (1) is positioned at described second chamber.
2. the secondary silencing apparatus of motor car engine according to claim 1, it is characterized in that: described dividing plate (4) is provided with center hole and center hole positioning boss, the center hole that described suction tude (2) stretches into described dividing plate (4) is connected with described center hole positioning boss.
3. the secondary silencing apparatus of motor car engine according to claim 1 and 2, is characterized in that: described cylindrical shell (1) is made up of vertical tube part (1-1) and the cone cylinder portion (1-2) that is attached at described vertical tube part two ends respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428337.8U CN204041164U (en) | 2014-07-31 | 2014-07-31 | The secondary silencing apparatus of motor car engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428337.8U CN204041164U (en) | 2014-07-31 | 2014-07-31 | The secondary silencing apparatus of motor car engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041164U true CN204041164U (en) | 2014-12-24 |
Family
ID=52241841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428337.8U Expired - Fee Related CN204041164U (en) | 2014-07-31 | 2014-07-31 | The secondary silencing apparatus of motor car engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153846A (en) * | 2014-07-31 | 2014-11-19 | 柳州利和排气控制系统有限公司 | Auxiliary muffler for automobile engine |
-
2014
- 2014-07-31 CN CN201420428337.8U patent/CN204041164U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153846A (en) * | 2014-07-31 | 2014-11-19 | 柳州利和排气控制系统有限公司 | Auxiliary muffler for automobile engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204532475U (en) | Motor sound eliminator for automobile | |
| CN204041164U (en) | The secondary silencing apparatus of motor car engine | |
| CN104420938A (en) | Transverse silencer | |
| CN204041182U (en) | The secondary silencing apparatus of motor car engine | |
| CN203570406U (en) | Double-row exhaust pipe with filtering and silencing device | |
| CN104153846A (en) | Auxiliary muffler for automobile engine | |
| CN203584534U (en) | Silencer for turbo supercharged engine | |
| CN201884242U (en) | Device used for treating noise and vibration generated by high-pressure gases | |
| CN204041224U (en) | Supercharger outlet noise-decreasing device | |
| CN204532471U (en) | For the silencing apparatus of portable lamp tower wagon | |
| CN202531258U (en) | Engine silencer | |
| CN204436545U (en) | Light truck muffler for internal combustion engine | |
| CN204827631U (en) | Novel split type motor muffler | |
| CN202266319U (en) | Post-processor connecting tube structure with resonance holes | |
| CN205874536U (en) | Coating machine process gas inlet pipe | |
| CN203570393U (en) | Exhaust pipe with straight tube type silencing device | |
| CN202852315U (en) | Silencer | |
| CN204419330U (en) | A kind of motor tricycle vent systems | |
| CN201810368U (en) | Sieve pore type automobile brake valve silencer | |
| CN203200010U (en) | Pneumatic down filling pipe | |
| CN104481838B (en) | Buffering tank for compressor | |
| CN203857184U (en) | Noise reduction tube for oil line system of cutting machine | |
| CN208966400U (en) | A kind of noise eliminator of motorcycle | |
| CN202441466U (en) | Dual-tail pipe | |
| CN204113418U (en) | A kind of double tail pipe silencing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190128 Address after: 545006 1st Floor of B-7 Factory Building, Area B, 2 Standard Workshop, Shuiwan Road, Liudong New District, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: LIUZHOU HENGZHUO AUTO PARTS Co.,Ltd. Address before: 545006 Yanghe North Road, Yanghe New Industrial District, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU LIHE EXHAUST SYSTEMS CONTROL CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |