CN101994543A - Silencer for light car - Google Patents
Silencer for light car Download PDFInfo
- Publication number
- CN101994543A CN101994543A CN2010102502752A CN201010250275A CN101994543A CN 101994543 A CN101994543 A CN 101994543A CN 2010102502752 A CN2010102502752 A CN 2010102502752A CN 201010250275 A CN201010250275 A CN 201010250275A CN 101994543 A CN101994543 A CN 101994543A
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- CN
- China
- Prior art keywords
- noise
- isolating plate
- dividing plate
- partition
- end cap
- 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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Abstract
The invention discloses a silence for a light car, which is characterized in that both ends of a shell are engaged with a first end cap and a second end cap, a sound-absorbing material is arranged on the inner edge wall at one end of the shell, a first isolating plate, a second isolating plate and a third isolating plate are arranged inside the shell, a second inner insertion tube is arranged on the second isolating plate and the third isolating plate, and a first insertion tube is arranged on the first isolating plate and the second isolating plate. Through the arrangement, the invention effectively eliminates noise with fundamental frequency and noise with certain specific frequencies of an engine in actual car installation application, and achieves good application effect.
Description
Technical field
The invention belongs to automobile exhaust muffler, particularly relate to a kind of exhaust silencer that on light-duty vehicle, uses that utilizes interference and resonance principle to eliminate the noise.
Background technique
At present, existing exhaust exhaust silencer mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the variation of abrupt change of cross-section place owing to acoustic reactance, some sound wave reflects back to sound source, and the not outlet by silencing apparatus, thereby reach the purpose of noise elimination, but this silencing apparatus is when using on some Light-duty Vehicle, the shortcoming of indivedual strong noise frequency contents can not be effectively eliminated in existence.
Summary of the invention
The object of the present invention is to provide a kind of interference of sound wave, existing wideband noise elimination feature that resonance principle is formed utilized to carry out the impedance composite exhaust silencer that emphasis is eliminated the noise at certain frequency (as the motor fundamental frequency) again.
Technological scheme of the present invention is: be occluding with first end cap and second end cap at the two ends of housing, one end inner wall of housing is provided with sound absorbing material, be provided with first dividing plate, second partition and the 3rd dividing plate in enclosure interior, on first dividing plate, second partition and the 3rd dividing plate, be provided with suction tude and steam outlet pipe, second partition and the 3rd dividing plate are provided with second interpolation pipe, and first dividing plate and second partition are provided with first interpolation pipe.
By above setting, the present invention has effectively eliminated the fundamental frequency noise of motor and the noise of some characteristic frequency in actual entrucking is used, obtained good effect.
Description of drawings
Now the present invention will be further described in conjunction with the accompanying drawings.
Fig. 1 is a structural representation of the present invention
1, first end cap 2, suction tude 3, first interfere hole 4, housing 5, sound absorbing material 6, first dividing plate 7, second to interfere hole 8, first interpolation pipe 9, second partition the 10, the 3rd to interfere hole 11, the 3rd dividing plate 12, second end cap 13, steam outlet pipe 14, second interpolation pipe among the figure
Embodiment
As shown in Figure 1, the present invention is occluding with first end cap 1 and second end cap 12 at the two ends of housing 4, one end inner wall of housing 4 is provided with sound absorbing material 5, be provided with first dividing plate 6, second partition 9 and the 3rd dividing plate 11 in enclosure interior, on first dividing plate 6, second partition 9 and the 3rd dividing plate 11, be provided with suction tude and steam outlet pipe, second partition 9 and the 3rd dividing plate 11 are provided with second interpolation pipe, 14, the first dividing plates 6 and second partition 9 is provided with first interpolation pipe 8.
Noise enters the 4th chamber through suction tude 2, realize that expansion is eliminated the noise for the first time, there is partial noise to interfere hole 3 in the way from first, second interferes hole 7 and the 3rd to interfere hole 10 to enter first, two, three chambeies, the noise that enters the 4th chamber is after realizing that the one-level expansion is eliminated the noise, enter second interpolation pipe 14, through the 3rd chamber the time, realize quadratic extension and resonant silencing, interfere the noise in hole 10 to be interfered simultaneously with from the 3rd, eliminate the noise of part characteristic frequency, then enter second chamber and realize three expansion noise eliminations, and with interfere the noise in hole 7 to be interfered from second, eliminate the noise of part characteristic frequency, noise after three expansions is during through the aperture on first interpolation pipe 8, because the effect of aperture, realize the elimination of partial noise, enter first chamber through first interpolation pipe 8 then, realize four expansions, interfere the noise in hole 3 to be interfered simultaneously with from first, eliminate the noise of part characteristic frequency, and because the part high-frequency noise is eliminated in the effect of sound absorbing material on the inner walls, at last, noise is discharged silencing apparatus from steam outlet pipe 13.
The present invention has made full use of the efficient noise elimination effect of RESONANT CAVITY MUFFLER, the higher component frequency of noise contribution is carried out emphasis eliminate the noise, and effectively reduces exhaust sound, has obtained the good actual application effect.
Claims (1)
1. light-duty silencer for automobile, it is characterized in that: be occluding with first end cap and second end cap at the two ends of housing, one end inner wall of housing is provided with sound absorbing material, be provided with first dividing plate, second partition and the 3rd dividing plate in enclosure interior, on first dividing plate, second partition and the 3rd dividing plate, be provided with suction tude and steam outlet pipe, second partition and the 3rd dividing plate are provided with second interpolation pipe, and first dividing plate and second partition are provided with first interpolation pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102502752A CN101994543A (en) | 2010-08-10 | 2010-08-10 | Silencer for light car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102502752A CN101994543A (en) | 2010-08-10 | 2010-08-10 | Silencer for light car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101994543A true CN101994543A (en) | 2011-03-30 |
Family
ID=43785211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102502752A Pending CN101994543A (en) | 2010-08-10 | 2010-08-10 | Silencer for light car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101994543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026281A (en) * | 2018-07-25 | 2018-12-18 | 武汉理工大学 | A kind of automobile-used exhaust silencer of motor |
-
2010
- 2010-08-10 CN CN2010102502752A patent/CN101994543A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026281A (en) * | 2018-07-25 | 2018-12-18 | 武汉理工大学 | A kind of automobile-used exhaust silencer of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110330 |