CN104265404A - Round exhaust silencer for vehicles - Google Patents
Round exhaust silencer for vehicles Download PDFInfo
- Publication number
- CN104265404A CN104265404A CN201410504804.5A CN201410504804A CN104265404A CN 104265404 A CN104265404 A CN 104265404A CN 201410504804 A CN201410504804 A CN 201410504804A CN 104265404 A CN104265404 A CN 104265404A
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- CN
- China
- Prior art keywords
- dividing plate
- anger
- clapboard
- vehicles
- diffusing tube
- 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.)
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- Exhaust Silencers (AREA)
Abstract
The invention discloses a round exhaust silencer for vehicles. The round exhaust silencer for vehicles is characterized in that a front end cover and a rear end cover are snapped at both ends of a circular barrel body, the inner side of the circular barrel body is separated by a front clapboard and a rear clapboard, an air intake diffuser is arranged on the upper portion between the front end cover and the front clapboard, a catalytic converter is arranged between the front clapboard and the rear clapboard, an air outlet diffuser is arranged in the middle position between the rear end cover and the rear clapboard and glass fibers are filled between the outer wall of the air outlet diffuser and the inner wall of the circular barrel body. According to the above arrangements, the round exhaust silencer for vehicles maintains the advantages of good noise elimination for middle and low frequency noise, by means of high-frequency noise elimination achieved by multiple direction change of air currents, noise of engine supercharger can be well eliminated, and due to a straight pipe structure of the air outlet diffuser, the exhaust back pressure of the whole system is reduced and part of exhaust noise is eliminated at the same time, and good effects in actual installation on vehicles can be achieved.
Description
Technical field
The invention belongs to a kind of engine exhaust Sound Attenuator, particularly relate to a kind of for reducing engine exhaust noise and the circular automobile exhaust gas Sound Attenuator reducing whole system exhaust back pressure.
Background technique
At present, existing engine exhaust Sound Attenuator mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, be directed at a part of sound wave and go back to sound source reflects, thus reach the object of noise elimination.The low-frequency silencing noise of this resistance exhaust noise silencing case centering has certain effect.Due to the perforation pipeline section good to high frequency noise soundproof effect of employing and the negligible amounts of perforated plate, and the inner resistive sound-absorbing material that layout is not good to high frequency noise acoustically effective, it is undesirable to the soundproof effect of high frequency noise, and the relatively unreasonable exhaust back pressure that causes of structural design is higher.
Summary of the invention
The object of the present invention is to provide a kind of in whole frequency range, the impedance composite automobile exhaust gas Sound Attenuator that especially low-frequency range soundproof effect is good.
To achieve these goals, the present invention is occluding with front cover and rear end cover respectively at the two ends of circular cylinder body, front dividing plate and rear bulkhead are by the internal layout of circular cylinder body, multiple round vent is provided with in the bottom of described front dividing plate, the intermediate portion of dividing plate is provided with diffusing tube mounting hole of giving vent to anger in the rear, multiple long strip vent is located at the surrounding of diffusing tube mounting hole of giving vent to anger, air inlet expanding duct is located at the top between front cover and front dividing plate, the outer end opening of described air inlet expanding duct, the other end is closed by front dividing plate, catalyst converter is located between front dividing plate and rear bulkhead, intermediate portion between rear end cover and rear bulkhead is provided with diffusing tube of giving vent to anger, the outer end opening of described diffusing tube of giving vent to anger, the other end is closed, glass fibre is filled with between the outer wall and the inwall of circular cylinder body of diffusing tube of giving vent to anger.
By above setting, the present invention maintains the effective advantage of centering, low frequency silencing noise, and air-flow is by repeatedly turning to the noise elimination to high frequency, engine supercharger whistle is well eliminated, low-frequency noise is well solved, and diffusing tube pipe of giving vent to anger adopts straight tube structure, also eliminate a part of exhaust sound while the exhaust back pressure of whole system is reduced, in actual entrucking uses, obtain good effect.
Accompanying drawing explanation
Now the present invention will be further described by reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
In figure: 1, circular cylinder body, 2, front cover, 3, rear end cover, 4, front dividing plate, 5, rear bulkhead, 6, round vent, 7, diffusing tube mounting hole of giving vent to anger, 8, long strip vent, 9, catalyst converter, 10, diffusing tube of giving vent to anger, 11, glass fibre, 12, air inlet expanding duct.
Embodiment
As Fig. 1, 2, shown in 3, the present invention is occluding with front cover 2 and rear end cover 3 respectively at the two ends of circular cylinder body 1, front dividing plate 4 and rear bulkhead 5 are by the internal layout of circular cylinder body 1, multiple round vent 6 is provided with in the bottom of described front dividing plate 4, the intermediate portion of dividing plate 5 is provided with diffusing tube mounting hole 7 of giving vent to anger in the rear, multiple long strip vent 8 is located at the surrounding of diffusing tube mounting hole 7 of giving vent to anger, air inlet expanding duct 12 is located at the top between front cover 2 and front dividing plate 4, the outer end opening of described air inlet expanding duct 12, the other end is closed by front dividing plate 4, catalyst converter 9 is located between front dividing plate 4 and rear bulkhead 5, intermediate portion between rear end cover 3 and rear bulkhead 5 is provided with diffusing tube 10 of giving vent to anger, the outer end opening of described diffusing tube 10 of giving vent to anger, the other end is closed, glass fibre 11 is filled with between the outer wall and the inwall of circular cylinder body 1 of diffusing tube 10 of giving vent to anger.By above setting, from engine exhaust pipe discharge noise enter air inlet diffusing tube 12 of the present invention, through the iris action of air inlet diffusing tube 12 and front dividing plate 4, by the vent on air inlet diffusing tube 12, realize one-level expansion, eliminate the basic, normal, high audio-frequency noise of part, the transformation in noise direction simultaneously and the vibration friction at little vent, eliminate part high-frequency noise.The round vent 6 of noise more in the past on dividing plate 4 enters catalyst converter 9, realize second level expansion, eliminate that part is low, mid-frequency noise again, noise enters in glass fibre 11 from the long strip vent 8 of catalyst converter 9 through rear bulkhead 5 again, realize three grades of expansions, eliminate the basic, normal, high audio-frequency noise of part again, the aperture of last noise on diffusing tube 10 of giving vent to anger enters diffusing tube 10 of giving vent to anger and discharges.
Claims (1)
1. a circular automobile exhaust gas Sound Attenuator, it is characterized in that: be occluding with front cover and rear end cover respectively at the two ends of circular cylinder body, front dividing plate and rear bulkhead are by the internal layout of circular cylinder body, multiple round vent is provided with in the bottom of described front dividing plate, the intermediate portion of dividing plate is provided with diffusing tube mounting hole of giving vent to anger in the rear, multiple long strip vent is located at the surrounding of diffusing tube mounting hole of giving vent to anger, air inlet expanding duct is located at the top between front cover and front dividing plate, the outer end opening of described air inlet expanding duct, the other end is closed by front dividing plate, catalyst converter is located between front dividing plate and rear bulkhead, intermediate portion between rear end cover and rear bulkhead is provided with diffusing tube of giving vent to anger, the outer end opening of described diffusing tube of giving vent to anger, the other end is closed, glass fibre is filled with between the outer wall and the inwall of circular cylinder body of diffusing tube of giving vent to anger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504804.5A CN104265404A (en) | 2014-09-27 | 2014-09-27 | Round exhaust silencer for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504804.5A CN104265404A (en) | 2014-09-27 | 2014-09-27 | Round exhaust silencer for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265404A true CN104265404A (en) | 2015-01-07 |
Family
ID=52156962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410504804.5A Pending CN104265404A (en) | 2014-09-27 | 2014-09-27 | Round exhaust silencer for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111492125A (en) * | 2017-12-19 | 2020-08-04 | 本田技研工业株式会社 | Muffler device |
-
2014
- 2014-09-27 CN CN201410504804.5A patent/CN104265404A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111492125A (en) * | 2017-12-19 | 2020-08-04 | 本田技研工业株式会社 | Muffler device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |