CN201884105U - Three-stage single-cylinder muffling exhaust pipe - Google Patents
Three-stage single-cylinder muffling exhaust pipe Download PDFInfo
- Publication number
- CN201884105U CN201884105U CN2010206534300U CN201020653430U CN201884105U CN 201884105 U CN201884105 U CN 201884105U CN 2010206534300 U CN2010206534300 U CN 2010206534300U CN 201020653430 U CN201020653430 U CN 201020653430U CN 201884105 U CN201884105 U CN 201884105U
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- China
- Prior art keywords
- grades
- acoustic chamber
- acoustic
- exhaust pipe
- muffling
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- 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
- 239000011358 absorbing material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Abstract
The utility model relates to a muffling exhaust pipe, in particular to a three-stage single-cylinder muffling exhaust pipe which belongs to the field of muffling devices for internal combustion engines. The exhaust pipe of the three-stage single-cylinder muffling exhaust pipe is hermetically connected with a primary sound transfer cavity, the rear part of the primary sound transfer cavity is hermetically connected with a primary muffler facing an exhaust pipe port, a secondary sound transfer cavity is connected with the side wall of the primary sound transfer cavity, the rear part of the secondary sound transfer cavity is hermetically connected with secondary mufflers, a tertiary sound transfer cavity is connected with the side wall of the secondary sound transfer cavity, the rear part of the tertiary sound transfer cavity is hermetically connected with a tertiary muffler, and the side wall of the tertiary sound transfer cavity is connected with a tail exhaust pipe through a muffling cylinder. The three-stage single-cylinder muffling exhaust pipe is simple in structure, can achieve excellent muffling effect through three-stage muffling, and has a better market prospect.
Description
Technical field
The utility model relates to a kind of noise reduction outlet pipe, and three grades of monotubular noise reduction outlet pipes particularly belong 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 secondary acoustic chamber that connects of main acoustic chamber sidewall, the secondary baffler is tightly connected behind secondary acoustic chamber, secondary acoustic chamber sidewall is other again to connect three grades of acoustic chambeies, the three grades of bafflers that are tightly connected behind three grades of acoustic chambeies, three grades of other tail gas exhausting pipes that connect of acoustic chamber sidewall.
Main acoustic chamber, secondary acoustic chamber and three grades of acoustic chambeies are that horn-like shape and sidewall are the laminated vacuum structure, and three grades of acoustic chambeies are to be connected to tail gas exhausting pipe again after connecing a baffler tube by pipeline is other, and baffler tube middle part is provided with the dividing plate of uniform through hole.
All be provided with the multi-disc dividing plate in described main, secondary and three grades of bafflers, in dividing plate bottom slit, be lined with sound absorbing material.
Concrete working procedure of the present utility model and beneficial effect: during engine operation, when internal-combustion engine vent-pipe scavenges, 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.Each baffler has adopted diaphragm structure, the back lining sound absorbing material, and the acoustic wave energy that the overwhelming majority can be imported into absorbs.Off-gas flows enters into hush pipe at last and is discharged by tail gas exhausting pipe, and the residue sound wave is then absorbed by hush pipe.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 cross-sectional view for the utility model master.
In Fig. 1, outlet pipe 1, interlayer outer wall 2, main acoustic chamber 3, secondary acoustic chamber 4, secondary baffler 5, main baffler 6, three grades of acoustic chambeies 7, baffler tube 8, tail gas exhausting pipe 9, dividing plate 10.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The tail gas that cylinder is discharged is sealingly connected to main acoustic chamber 3 by outlet pipe 1, main acoustic chamber 3 over against back-end sealing connect main baffler 6 over against exhaust pipe mouth, the other secondary acoustic chamber 4 that connects of main acoustic chamber 3 sidewalls, secondary baffler 5 is tightly connected behind secondary acoustic chamber 4, secondary acoustic chamber 4 sidewalls side again connect three grades of acoustic chambeies 7, the three grades of bafflers (identical with aforementioned structure) that are tightly connected behind three grades of acoustic chambeies 7, the sidewall in three grades of acoustic chambeies 7 are at last by the baffler tube 8 other tail gas exhausting pipes 9 that connect.Main acoustic chamber 3, secondary acoustic chamber 4 and three grades of acoustic chambeies 7 are all horn-like shape and sidewall is the laminated vacuum structure.Correspondence is connected in main baffler 6, secondary baffler 5 and the three grades of bafflers in each dead astern, acoustic chamber and all is provided with the multi-disc dividing plate, is lined with sound absorbing material in dividing plate bottom slit.Three grades of acoustic chambeies 7 are to be connected to tail gas exhausting pipe 9 again after connecing a baffler tube 8 by pipeline is other, and baffler tube 8 middle parts are provided with the dividing plate 10 of a uniform through hole, can make turning back therein of waste gas and remaining sound, finally weaken its energy.
During engine operation, the internal-combustion engine vent-pipe combustion gas 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 each acoustic chamber, sound wave is difficult to appear the acoustic chamber.Here, this device has utilized the different physical property of sound wave with air-flow, and air-flow is when changing the flow direction, and sound wave still propagates in the main muffler forward.Baffler adopts diaphragm structure, and the back lining sound absorbing material can absorb most acoustic wave energies.In the time of in air-flow enters into follow-up acoustic chamber, acoustic wave segment also can enter thereupon, is absorbed by follow-up baffler again, by the effect of baffler tube, obtains good erasure effect at last, and makes exhaust back pressure lower again.
Claims (3)
1. one kind three grades monotubular noise reduction outlet pipes, it is characterized in that: 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 secondary acoustic chamber that connects of main acoustic chamber sidewall, the secondary baffler is tightly connected behind secondary acoustic chamber, secondary acoustic chamber sidewall is other again to connect three grades of acoustic chambeies, the three grades of bafflers that are tightly connected behind three grades of acoustic chambeies, three grades of other tail gas exhausting pipes that connect of acoustic chamber sidewall.
2. by the described three grades of monotubular noise reduction outlet pipes of claim 1, it is characterized in that: main acoustic chamber, secondary acoustic chamber and three grades of acoustic chambeies are that horn-like shape and sidewall are the laminated vacuum structure, three grades of acoustic chambeies are to be connected to tail gas exhausting pipe again after connecing a baffler tube by pipeline is other, and baffler tube middle part is provided with the dividing plate of uniform through hole.
3. by the described three grades of monotubular noise reduction outlet pipes of claim 2, it is characterized in that: all be provided with the multi-disc dividing plate in master, secondary and three grades of bafflers, in dividing plate bottom slit, be lined with sound absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534300U CN201884105U (en) | 2010-12-12 | 2010-12-12 | Three-stage single-cylinder muffling exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534300U CN201884105U (en) | 2010-12-12 | 2010-12-12 | Three-stage single-cylinder muffling exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884105U true CN201884105U (en) | 2011-06-29 |
Family
ID=44181645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206534300U Expired - Fee Related CN201884105U (en) | 2010-12-12 | 2010-12-12 | Three-stage single-cylinder muffling exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884105U (en) |
-
2010
- 2010-12-12 CN CN2010206534300U patent/CN201884105U/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 |