CN202832729U - Bi-modal exhaust muffler - Google Patents
Bi-modal exhaust muffler Download PDFInfo
- Publication number
- CN202832729U CN202832729U CN 201220405141 CN201220405141U CN202832729U CN 202832729 U CN202832729 U CN 202832729U CN 201220405141 CN201220405141 CN 201220405141 CN 201220405141 U CN201220405141 U CN 201220405141U CN 202832729 U CN202832729 U CN 202832729U
- Authority
- CN
- China
- Prior art keywords
- muffler
- exhaust
- pipe
- silencer
- control valve
- 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 - Lifetime
Links
- 230000003584 silencer Effects 0.000 claims description 25
- 230000030279 gene silencing Effects 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001743 silencing effect Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003519 ventilatory effect Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a bi-modal exhaust muffler. The exhaust muffler comprises a muffler cavity, a muffler inlet pipe and a muffler exhaust pipe are positioned in the muffler cavity and mutually communicated through a hole with the diameter smaller than that of the muffler air outlet pipe, and an auxiliary exhaust pipe is arranged between the muffler inlet pipe and the muffler exhaust pipe and provided with a control valve at one end. After adoption of the bi-modal exhaust muffler, the muffler at low and middle revolving speeds can achieve good silencing effect through establishing complex sound transmission paths; and according to the muffler at the high revolving speed, the control valve is started, the back pressure is reduced, and performances of a generator are not affected.
Description
Technical field
The utility model relates to the automobile exhaust technical field, especially relates to a kind of Double-mode exhaust silencer.
Background technique
The internal structure of silencing apparatus will be taken into account noise (acoustic attenuation performance) and gas-flow resistance (back pressure) two-part performance, and acoustic attenuation performance and back pressure are antipodal direction in design, acoustic attenuation performance, high back pressure that complicated internal structure can be brought; Simple internal structure is brought poor acoustic attenuation performance, low back pressure.In the actual using process of car load, exhaust sound is larger to the internal car noise contribution during motor middle and slow speed of revolution, Sound Elimination Performance of Mufflers is had relatively high expectations, and back pressure is less to the performance impact of motor; During high rotating speed, exhaust sound is less to the internal car noise contribution, and back pressure is larger on the engine performance impact.
Existing silencing apparatus is identical with working state under the high-speed state at middle and slow speed of revolution, and economy is little, can not satisfy in the different rotating speeds situation requirement to magnitude of back pressure.
The model utility content
Technical problem to be solved in the utility model provides a kind of Double-mode exhaust silencer, its objective is that back pressure can regulate according to engine operating condition, has preferably acoustic attenuation performance thereby reach, and does not affect again the performance of motor.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of Double-mode exhaust silencer, comprise the silencing apparatus cavity, be provided with silencer air inlet pipe and muffler tail pipe in the described silencing apparatus cavity, be connected by the hole of bore less than the caliber of muffler tail pipe between described silencer air inlet pipe and the muffler tail pipe, be provided with the auxiliary exhaust pipe between described silencer air inlet pipe and the muffler tail pipe, described auxiliary exhaust Guan Yiduan is provided with control valve.
Described control valve is electrically connected with automobile control unit ECU.
Described auxiliary exhaust Guan Weiyi ventilation straight tube.
The caliber of described auxiliary exhaust pipe is identical with the caliber of muffler tail pipe.
The utility model compared with prior art has the following advantages: after adopting Double-mode exhaust silencer, the silencing apparatus under middle and slow speed of revolution reaches better soundproof effect by setting up complicated transmission sound path; Silencing apparatus under high rotating speed, control valve is opened, and back pressure reduces, and does not affect the performance of motor.
Description of drawings
The below makes brief description to the expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure:
Fig. 1 is the silencing apparatus work schematic representation of the utility model control valve closed condition.
Fig. 2 is the silencing apparatus work schematic representation of the utility model control valve opening state.
Among the figure: 1. exhaust cavity, 2. lumen, 3. air-inlet cavity, 4. silencer air inlet pipe, 5. the exhaust lumen pore, 6. in lumen pore, 7. muffler tail pipe, 8. auxiliary exhaust pipe, 9. control valve.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, embodiment of the present utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of Double-mode exhaust silencer comprises the silencing apparatus cavity that is comprised of exhaust cavity 1, lumen 2, air-inlet cavity 3, and exhaust cavity 1, lumen 2, air-inlet cavity 3 are divided into by baffle plate, are equipped with vent at two baffle plates.Silencer air inlet pipe 4 and muffler tail pipe 7 are arranged in the silencing apparatus cavity, it is external that silencer air inlet pipe 4 one ends are located at silencer chamber, the other end is located in the air-inlet cavity 3, silencer air inlet pipe also passes lumen, and in lumen, have three middle lumen pores 6, silencer air inlet pipe has an exhaust lumen pore 5 in exhaust cavity, the bore in above-mentioned hole is less than the caliber of muffler tail pipe.It is external that muffler tail pipe one end is located at silencer chamber, and the other end is located in the exhaust cavity.
In order to realize the purpose of this utility model, between silencer air inlet pipe 4 and muffler tail pipe 7, be provided with auxiliary exhaust pipe 8, be that auxiliary exhaust Guan Yiduan is provided with in air-inlet cavity, the other end is located in the exhaust cavity, and the port of the auxiliary exhaust pipe 8 in exhaust cavity is provided with control valve 9.
Further, control valve 9 is electrically connected with automobile control unit ECU, and open and close control is convenient.
Preferably, auxiliary exhaust pipe 8 is a ventilation straight tube.The caliber of auxiliary exhaust pipe 8 is identical with the caliber of muffler tail pipe 7.Ventilatory effect is good, and back pressure reduces effective.
Motor is under the middle and slow speed of revolution operating mode, and the control valve of auxiliary exhaust pipe is in closed condition, and exhaust airstream is discharged by the hole on the silencer air inlet pipe, and complex structure has preferably soundproof effect; Motor is under high rotating speed operating mode, and the control valve of auxiliary exhaust pipe is in opening state, and the part air-flow is directly discharged by the auxiliary exhaust pipe, and back pressure reduces, and does not affect the performance of motor.
The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that design of the present utility model and technological scheme carry out; or without improving design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (4)
1. Double-mode exhaust silencer, comprise the silencing apparatus cavity, be provided with silencer air inlet pipe (4) and muffler tail pipe (7) in the described silencing apparatus cavity, be connected by the hole of bore less than the caliber of muffler tail pipe between described silencer air inlet pipe (4) and the muffler tail pipe (7), it is characterized in that: be provided with auxiliary exhaust pipe (8) between described silencer air inlet pipe (4) and the muffler tail pipe (7), described auxiliary exhaust pipe (8) one ends are provided with control valve (9).
2. Double-mode exhaust silencer as claimed in claim 1, it is characterized in that: described control valve (9) is electrically connected with automobile control unit ECU.
3. Double-mode exhaust silencer as claimed in claim 1 or 2 is characterized in that: described auxiliary exhaust pipe (8) is a ventilation straight tube.
4. Double-mode exhaust silencer as claimed in claim 3, it is characterized in that: the caliber of described auxiliary exhaust pipe (8) is identical with the caliber of muffler tail pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405141 CN202832729U (en) | 2012-08-16 | 2012-08-16 | Bi-modal exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405141 CN202832729U (en) | 2012-08-16 | 2012-08-16 | Bi-modal exhaust muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832729U true CN202832729U (en) | 2013-03-27 |
Family
ID=47944460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220405141 Expired - Lifetime CN202832729U (en) | 2012-08-16 | 2012-08-16 | Bi-modal exhaust muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595056A (en) * | 2018-11-01 | 2019-04-09 | 重庆金康新能源汽车设计院有限公司 | Bimodal silencer and automobile |
| CN116220861A (en) * | 2023-03-31 | 2023-06-06 | 浙江春风动力股份有限公司 | Motorcycle |
-
2012
- 2012-08-16 CN CN 201220405141 patent/CN202832729U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595056A (en) * | 2018-11-01 | 2019-04-09 | 重庆金康新能源汽车设计院有限公司 | Bimodal silencer and automobile |
| CN116220861A (en) * | 2023-03-31 | 2023-06-06 | 浙江春风动力股份有限公司 | Motorcycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |