CN104265405A - Square exhaust sound-muffling box for vehicle - Google Patents
Square exhaust sound-muffling box for vehicle Download PDFInfo
- Publication number
- CN104265405A CN104265405A CN201410505961.8A CN201410505961A CN104265405A CN 104265405 A CN104265405 A CN 104265405A CN 201410505961 A CN201410505961 A CN 201410505961A CN 104265405 A CN104265405 A CN 104265405A
- Authority
- CN
- China
- Prior art keywords
- end cover
- vehicle
- clapboard
- air inlet
- square
- 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
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- Exhaust Silencers (AREA)
Abstract
The invention discloses a square exhaust sound-muffling box for a vehicle. The square exhaust sound-muffling box for the vehicle is characterized in that a front end cover and a back end cover are respectively welded on the two ends of a square shell; the inner part of the square shell is separated by a front clapboard and a back clapboard; a catalysis device is supported in the middle of the front clapboard and the back clapboard; an air inflow expansion tube is arranged on one side of the upside between the front clapboard and the back clapboard; an air inflow bowl is arranged on one side of the upper part of the front end cover; a mesh plate is arranged on the inner side of the back end cover; glass fibers are filled between the mesh plate and the back end cover; an air outlet pipe is arranged on the lower part of the back end cover. Through the arrangement above, the square exhaust sound-muffling box for the vehicle has the advantage of good sound-muffling effect on medium and low frequency noise of an engine, also removes a portion of exhaust noise while reducing exhaust back pressure of the whole system of the engine, and obtains very good effects when being practically used in the vehicle.
Description
Technical field
The present invention relates to a kind of motor silencer, is a kind of for reducing the exhaust noise silencing case of engine exhaust noise with the exhaust back pressure of reduction whole system specifically.
Background technique
At present, existing Exhuster of engine 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 venting gas appliance centering has certain effect.And for high frequency noise, 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.
Summary of the invention
The object of the present invention is to provide a kind of impedance composite exhaust noise silencing case that especially low-frequency range soundproof effect is good in whole frequency range.
To achieve these goals, the present invention is welded with front cover and rear end cover respectively at the two ends of square casing, front dividing plate and rear bulkhead are by the internal layout of square casing, intermediate portion between front dividing plate and rear bulkhead is supported with catalyst converter, air inlet expanding duct is located at the upper side between front dividing plate and rear bulkhead, air inlet the rim of a bowl is located at the side, top of front cover, described air inlet the rim of a bowl is connected with one end of air inlet expanding duct, the other end of described air inlet expanding duct is closed by rear bulkhead, web plate is located at the inner side of rear end cover, glass fibre is filled with between web plate and rear end cover, steam outlet pipe is located at the bottom of rear end cover.
By above setting, the present invention have in motor, the effective advantage of low frequency silencing noise, also eliminate a part of exhaust sound while the exhaust back pressure of motor 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.
In figure: 1, square casing, 2, front cover, 3, rear end cover, 4, front dividing plate, 5, rear bulkhead, 6, catalyst converter, 7, air inlet expanding duct, 8, air inlet the rim of a bowl, 9, web plate, 10, glass fibre, 11, steam outlet pipe.
Embodiment
As Fig. 1, shown in 2, the present invention is welded with front cover 2 and rear end cover 3 respectively at the two ends of square casing 1, front dividing plate 4 and rear bulkhead 5 are by the internal layout of square casing 1, intermediate portion between front dividing plate 4 and rear bulkhead 5 is supported with catalyst converter 6, air inlet expanding duct 7 is located at the upper side between front dividing plate 4 and rear bulkhead 5, air inlet the rim of a bowl 8 is located at the side, top of front cover 2, described air inlet the rim of a bowl 8 is connected with one end of air inlet expanding duct 7, the other end of described air inlet expanding duct 7 is closed by rear bulkhead 5, web plate 9 is located at the inner side of rear end cover 3, glass fibre 10 is filled with between web plate 9 and rear end cover 3, steam outlet pipe 11 is located at the bottom of rear end cover 3.By above setting, from iris action through air inlet the rim of a bowl 8, air inlet diffusing tube 7 and rear bulkhead 5 of the noise of motor, realize one-level expansion, eliminate the basic, normal, high audio-frequency noise of part, under the vibration friction of the transformation in noise direction simultaneously and the little vent on air inlet diffusing tube 7, eliminate part high-frequency noise.
Residual noise enters between rear bulkhead 5 and rear end cover 3 through catalyst converter 6, realize secondary expansion, eliminate the basic, normal, high audio-frequency noise of part, simultaneously because the friction of aperture on catalyst converter 6 is to the transformation in noise direction and vibration friction, eliminate part high-frequency noise, glass fibre 10 realizes eliminating part high-frequency noise, and noise is when steam outlet pipe 11 is discharged, due to the steering-effecting of noise, eliminate part high-frequency noise again.
Claims (1)
1. a square automobile exhaust gas Sound Attenuator, it is characterized in that: be welded with front cover and rear end cover respectively at the two ends of square casing, front dividing plate and rear bulkhead are by the internal layout of square casing, intermediate portion between front dividing plate and rear bulkhead is supported with catalyst converter, air inlet expanding duct is located at the upper side between front dividing plate and rear bulkhead, air inlet the rim of a bowl is located at the side, top of front cover, described air inlet the rim of a bowl is connected with one end of air inlet expanding duct, the other end of described air inlet expanding duct is closed by rear bulkhead, web plate is located at the inner side of rear end cover, glass fibre is filled with between web plate and rear end cover, steam outlet pipe is located at the bottom of rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505961.8A CN104265405A (en) | 2014-09-27 | 2014-09-27 | Square exhaust sound-muffling box for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505961.8A CN104265405A (en) | 2014-09-27 | 2014-09-27 | Square exhaust sound-muffling box for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265405A true CN104265405A (en) | 2015-01-07 |
Family
ID=52156963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410505961.8A Pending CN104265405A (en) | 2014-09-27 | 2014-09-27 | Square exhaust sound-muffling box for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265405A (en) |
-
2014
- 2014-09-27 CN CN201410505961.8A patent/CN104265405A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |