CN1873192A - Filtering muffler for automobiles - Google Patents
Filtering muffler for automobiles Download PDFInfo
- Publication number
- CN1873192A CN1873192A CN 200610054365 CN200610054365A CN1873192A CN 1873192 A CN1873192 A CN 1873192A CN 200610054365 CN200610054365 CN 200610054365 CN 200610054365 A CN200610054365 A CN 200610054365A CN 1873192 A CN1873192 A CN 1873192A
- Authority
- CN
- China
- Prior art keywords
- cavity chamber
- chamber
- outlet pipe
- cavity
- tube body
- 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.)
- Pending
Links
Abstract
The present invention provides a car muffler. It is composed of tube body, three diaphragms, air inlet pipe, air outlet pipe and front and rear end covers. The tube body can be divided into four cavity chambers by means of diaphragms, said air inlet pipe is extended into the tube body from one end of said tube body, passed through first cavity chamber and second cavity chamber to third cavity chamber, the air outlet pipe is started from first cavity chamber, then passed through second cavity chamber, third cavity chamber and fourth cavity chamber, then extended from said tube body, on the air inlet pipe, air output pipe and diaphragms a certain quantity of micropores are cut, so that the first cavity chamber, second cavity chamber and third cavity chamber are formed into a resonant cavity, and can be effectively used for reducing low-frequency noise, and the interior of fourth cavity chamber is filled up with sound-absorbing cotton so as to form a sound-absorbing chamber, at the same time the periphery of middle-rear part of air outlet pipe also is covered with sound-absorbing cover, so that the high-frequency noise can be further reduced.
Description
Technical field
The present invention relates to a kind of silencing apparatus.
Background technique
Have the silencing apparatus common form on automobile, used now by three pipes---suction tude, steam outlet pipe, transition tube and cylindrical shell, front and rear cover are formed.After exhaust airstream is entered by suction tude,, find that in actual use air communication has increased air-flow velocity after crossing transition tube, cause exhaust back pressure to increase, thereby increased the difficulty that reduces exhaust sound by discharging through steam outlet pipe again after the transition tube.
Summary of the invention
The objective of the invention is to the deficiency at the prior art existence, propose a kind of silencing apparatus that uses on automobile, the transition tube in the cancellation silencing apparatus under the prerequisite that does not influence engine performance, effectively reduces engine exhaust noise.
Technological scheme of the present invention is as follows:
A kind of automotive muffler is made up of cylindrical shell, three dividing plates, suction tude, steam outlet pipe and forward and backward end caps.Dividing plate is separated into four chambers with cylindrical shell, suction tude puts in from cylindrical shell one end, end to the 3rd chamber through first, second, steam outlet pipe then passes second and third, picks out behind four chambers since first chamber, on suction tude, the steam outlet pipe and all have the micropore of some on the dividing plate, make first, second, third chamber form resonant cavity, can reduce low-frequency noise effectively.And in the 4th chamber, fill up the sound absorption cotton, form anechoic room.
In addition, periphery also can be surrounded Sound damping cover in the steam outlet pipe posterior segment, further reduces high-frequency noise.
The present invention is by having designed three resonant cavities and an anechoic room, and cancelled transition tube, and make exhaust airstream flowing in noise elimination cavity more unimpeded, engine exhaust noise is effectively reduced in wide band, and can reduce exhaust back pressure effectively, improve the power of motor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, this silencing apparatus is made up of three dividing plates 3,5,8, suction tude 2, steam outlet pipe 6, cylindrical shell 4 and forward and backward end cap 1 and 10.Dividing plate 3,5,8 has been separated into four chambers with cylindrical shell 4, suction tude 2 puts in from cylindrical shell one end, end to the 3rd chamber through first, second, 6 of steam outlet pipes pass second and third, pick out behind four chambers since first chamber, on suction tude 2, the steam outlet pipe 6 and all have the micropore of some on the dividing plate 3,5,8, make first three chamber form resonant cavity with cylindrical shell 4, in order to reduce low-frequency noise, cotton with filling up sound absorption in the 4th chamber simultaneously, form anechoic room 9, at steam outlet pipe 6 posterior segment periphery parcel Sound damping covers 7, further reduce high-frequency noise simultaneously.
Claims (2)
1, a kind of automotive muffler, form by cylindrical shell, dividing plate, suction tude, steam outlet pipe and forward and backward end cap, it is characterized in that: dividing plate has three, cylindrical shell is separated into four chambers, suction tude puts in from cylindrical shell one end, end to the 3rd chamber through first, second, steam outlet pipe then since first chamber by second and third, four chambers pass then and pick out, on suction tude, the steam outlet pipe and all have the micropore of some on the dividing plate, make first, second, third chamber form resonant cavity, and in the 4th chamber, fill up the sound absorption cotton, form anechoic room.
2, automotive muffler according to claim 1 is characterized in that: periphery is enclosed with Sound damping cover in the steam outlet pipe posterior segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610054365 CN1873192A (en) | 2006-06-17 | 2006-06-17 | Filtering muffler for automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610054365 CN1873192A (en) | 2006-06-17 | 2006-06-17 | Filtering muffler for automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1873192A true CN1873192A (en) | 2006-12-06 |
Family
ID=37483770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610054365 Pending CN1873192A (en) | 2006-06-17 | 2006-06-17 | Filtering muffler for automobiles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1873192A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059091A (en) * | 2015-07-24 | 2015-11-18 | 重庆长安汽车股份有限公司 | Balance device of in-car air pressure |
| CN107035463A (en) * | 2016-11-28 | 2017-08-11 | 华中科技大学 | It is a kind of that the sound eliminator for automobile of catalytic reaction can be carried out using waste heat |
| CN107461231A (en) * | 2017-09-29 | 2017-12-12 | 武汉理工大学 | A kind of model muffler |
-
2006
- 2006-06-17 CN CN 200610054365 patent/CN1873192A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059091A (en) * | 2015-07-24 | 2015-11-18 | 重庆长安汽车股份有限公司 | Balance device of in-car air pressure |
| CN105059091B (en) * | 2015-07-24 | 2017-06-30 | 重庆长安汽车股份有限公司 | A kind of in-car air-pressure balancing device |
| CN107035463A (en) * | 2016-11-28 | 2017-08-11 | 华中科技大学 | It is a kind of that the sound eliminator for automobile of catalytic reaction can be carried out using waste heat |
| CN107461231A (en) * | 2017-09-29 | 2017-12-12 | 武汉理工大学 | A kind of model muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |