CN201884103U - Two-stage single-cylinder silencing exhaust pipe - Google Patents
Two-stage single-cylinder silencing exhaust pipe Download PDFInfo
- Publication number
- CN201884103U CN201884103U CN2010206534279U CN201020653427U CN201884103U CN 201884103 U CN201884103 U CN 201884103U CN 2010206534279 U CN2010206534279 U CN 2010206534279U CN 201020653427 U CN201020653427 U CN 201020653427U CN 201884103 U CN201884103 U CN 201884103U
- Authority
- CN
- China
- Prior art keywords
- acoustic chamber
- exhaust pipe
- outlet pipe
- main
- baffler
- 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 abstract 7
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000003584 silencer Effects 0.000 abstract description 3
- 230000001743 silencing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Images
Abstract
The utility model relates to a silencing exhaust pipe, in particular to a two-stage single-cylinder silencing exhaust pipe, which belongs to the field of silencers of internal combustion engines. An exhaust pipe opening of the silencing exhaust pipe is connected with a primary sound conducting cavity in a sealed manner, a primary silencer over against the exhaust pipe opening is connected to the rear of the primary sound conducting cavity in a sealed manner, a secondary sound conducting cavity is adjacently connected to the lateral wall of the primary sound conducting cavity, a primary silencer is connected to the rear of the secondary sound conducting cavity in a sealed manner, and an exhaust pipe is adjacently connected to the lateral wall of the secondary sound conducting cavity. The two-stage single-cylinder silencing exhaust pipe is simple in structure, sound energy can be reduced greatly by the two-cylinder and two-stage silencing way, so that the silencing effect is extremely fine, and the silencing exhaust pipe has fine market prospect.
Description
Technical field
The utility model relates to a kind of noise reduction outlet pipe, and two-stage monotubular noise reduction outlet pipe particularly belongs to the silencer field of internal combustion engine.
Background technique
Traffic noise be one of noise source in the urban environment noise, and the automobile exhaust noise is the main noise source of car noise by producing in the motor-driven vehicle going process, also is the emphasis of urban environment noise control.
For reducing exhaust noise, Motor Vehicle generally adopts the noise reduction outlet pipe, automobile noise reduction outlet pipe is one and matured product, its basic structure and working principle decades almost do not change, and now are badly in need of the better noise reduction outlet pipe of erasure effect of a kind of novel structure, cheap and general noise reduction product.
Summary of the invention
In view of this, the purpose of this utility model provides the better noise reduction outlet pipe of erasure effect of a kind of novel structure, cheap and general noise reduction product.
For achieving the above object, the utility model provides following technological scheme: the outlet pipe main acoustic chamber that is tightly connected, behind main acoustic chamber, be tightly connected over against the main baffler of exhaust pipe mouth, the other time acoustic chamber that connects of main acoustic chamber sidewall, behind inferior acoustic chamber, be tightly connected time baffler, the other tail gas exhausting pipe that connects of inferior acoustic chamber sidewall.
Described main acoustic chamber and time acoustic chamber are that horn-like shape and sidewall are the laminated vacuum structure.
All be provided with the multi-disc dividing plate in described baffler and the main baffler, in dividing plate bottom slit, be lined with sound absorbing material.
Connected a hush pipe on the outlet pipe of inferior acoustic chamber sidewall, this hush pipe middle part is provided with the ventilative dividing plate of a uniform aperture, and ventilative dividing plate one side connects time acoustic chamber with pipeline, and opposite side connects tail gas exhausting pipe.
Concrete working procedure of the present utility model and beneficial effect: engine operation when internal-combustion engine vent-pipe scavenges, has also constituted a noise source simultaneously.Sound wave is propagated forward, and in the process of propagating, because the laminated vacuum structure is adopted in the acoustic chamber, sound wave is difficult to appear the acoustic chamber.Utilized the different physical property of sound wave with air-flow simultaneously, air-flow is when changing the flow direction, and sound wave still propagates into forward in the main muffler, absorbs most acoustic wave energies.In air-flow enters into time acoustic chamber, also have acoustic wave segment to enter into time acoustic chamber, the inferior baffler that is connected is absorbed.Off-gas flows enters into hush pipe at last and is discharged by tail gas exhausting pipe, and the residue sound wave is absorbed by hush pipe again, and waste gas is after the outlet pipe discharge.The present invention is simple in structure, and erasure effect is good, can add multistage baffler as the case may be, and cost is extremely low, has good market prospects.
Description of drawings
Fig. 1 looks generalized section for the utility model master.
In Fig. 1, outlet pipe 1, interlayer outer wall 2, main acoustic chamber 3, inferior acoustic chamber 4, inferior baffler 5, main baffler 6, hush pipe 7, ventilative dividing plate 8, tail gas exhausting pipe 9.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
When internal-combustion engine vent-pipe 1 scavenges, also constituted a noise source simultaneously.The outlet pipe 1 horn-like main acoustic chamber 3 that is tightly connected, main baffler 6 is tightly connected behind 3 dead asterns, main acoustic chamber, the other again acoustic chamber 4 that connects trumpet-shaped time of horn-like main acoustic chamber 3 sidewalls, the dead astern in inferior acoustic chamber 4 also is sealedly connected with time baffler 5, and inferior acoustic chamber 4 sidewalls are by a hush pipe 7 other tail gas exhausting pipes 9 that connect.The sidewall in main acoustic chamber 3 and time acoustic chamber 4 is the laminated vacuum structure, can prevent better that sound from spreading out of.All be provided with the multi-disc dividing plate in inferior baffler 5 and the main baffler 6, in dividing plate bottom slit, be lined with sound absorbing material.The structure of described hush pipe 7 is ventilative dividing plates 8 that a uniform aperture is set at the tube middle part, and ventilative dividing plate 8 one sides connect time acoustic chamber 4 with pipeline, and opposite side connects tail gas exhausting pipe 9, and waste gas must could be flowed out through fold return motion therein.
Claims (4)
1. two-stage monotubular noise reduction outlet pipe, it is characterized in that: the outlet pipe main acoustic chamber that is tightly connected is tightly connected over against the main baffler of exhaust pipe mouth the other time acoustic chamber that connects of main acoustic chamber sidewall behind main acoustic chamber, behind inferior acoustic chamber, be tightly connected time baffler, the other tracheae that runs in of inferior acoustic chamber sidewall.
2. by the described two-stage monotubular of claim 1 noise reduction outlet pipe, it is characterized in that: main acoustic chamber and time acoustic chamber are that horn-like shape and sidewall are the laminated vacuum structure.
3. by the described two-stage monotubular of claim 2 noise reduction outlet pipe, it is characterized in that: all be provided with the multi-disc dividing plate in inferior baffler and the main baffler, in dividing plate bottom slit, be lined with sound absorbing material.
4. by the described two-stage monotubular of claim 3 noise reduction outlet pipe, it is characterized in that: connected a hush pipe on the outlet pipe of inferior acoustic chamber sidewall, this hush pipe middle part is provided with the ventilative dividing plate of a uniform aperture, and ventilative dividing plate one side connects time acoustic chamber with pipeline, and opposite side connects outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534279U CN201884103U (en) | 2010-12-12 | 2010-12-12 | Two-stage single-cylinder silencing exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534279U CN201884103U (en) | 2010-12-12 | 2010-12-12 | Two-stage single-cylinder silencing exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884103U true CN201884103U (en) | 2011-06-29 |
Family
ID=44181643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206534279U Expired - Fee Related CN201884103U (en) | 2010-12-12 | 2010-12-12 | Two-stage single-cylinder silencing exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884103U (en) |
-
2010
- 2010-12-12 CN CN2010206534279U patent/CN201884103U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20121212 |