CN201236733Y - Exhausting silencer - Google Patents
Exhausting silencer Download PDFInfo
- Publication number
- CN201236733Y CN201236733Y CNU2008200347040U CN200820034704U CN201236733Y CN 201236733 Y CN201236733 Y CN 201236733Y CN U2008200347040 U CNU2008200347040 U CN U2008200347040U CN 200820034704 U CN200820034704 U CN 200820034704U CN 201236733 Y CN201236733 Y CN 201236733Y
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- China
- Prior art keywords
- muffler
- rear muffler
- silencer
- premuffler
- silencer cylinder
- 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 - Fee Related
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- 230000003584 silencer Effects 0.000 title claims description 50
- 238000005192 partition Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 7
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 230000030279 gene silencing Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses an exhaust muffler, and belongs to the technical field of automobile structures. The exhaust muffler comprises a muffler cylinder body (4), a back muffler air inlet pipe (5) and back muffler air outlet pipes (6), wherein, the back muffler air inlet pipe (5) is arranged in the side surface direction of the muffler cylinder body (4) and further passes through the muffler cylinder body (4) to form two connection points with the muffler cylinder body (4); and the back muffler air outlet pipes (6) numbering two are arranged at the two ends of the muffler cylinder body (4). The exhaust muffler which adopts the technical proposal has the advantages that the external structure and the internal structure of a back muffler are relatively simple, therefore, the overall weight of a system is reduced; meanwhile, the purpose of broadband muffling can be achieved to enable insertion loss to meet design requirements; and a back muffler cylinder body can not be seen form the back, the left and the right sides of an entire car to enable the entire car modeling to be more compact and beautiful.
Description
Technical field
The utility model belongs to the technical field of automobile construction, relates to the air exchange system of motor car engine, and more particularly, the utility model relates to a kind of exhaust silencer in this system.
Background technique
Owing to be subjected to the influence that the chassis is arranged, general automobile all adopts the small volume premuffler at present, eliminates high-frequency noises; And rear muffler is eliminated the medium and low frequency noise, and utilizes resonant cavity to eliminate the noise of a certain fixed frequency.Be generally single or two vertical postpone silencing apparatuss, suction tude all is chosen as from end face, and second strong point is chosen on the internal partition.
The problem that needs in the prior art to solve is:
1, to have required be double gas port in moulding, and the boundary space on chassis is given simultaneously, need carry out the external form of rear muffler and arrange under a severe relatively boundary conditions.
2,, the design of internal structure some influences have been produced because the restriction that external form is arranged.Because the volume ratio of rear muffler is bigger, the rigidity of internal structure does not relatively have the good of little cylindrical shell yet, so if take traditional noise-cancelling theory, will allow internal structure too complicated.
3, need to eliminate some fixing frequency noise, simultaneously total sound deadening capacity will reach requirement, and the noise curve that makes relief opening is near the aim curve value.
The model utility content
Problem to be solved in the utility model provides a kind of exhaust silencer, and its goal of the invention is the external form of reasonable Arrangement rear muffler, simplifies its internal structure.
To achieve these goals, the technological scheme that the utility model is taked is: this exhaust silencer that is provided, comprise silencer cylinder, rear muffler suction tude and rear muffler steam outlet pipe, described rear muffler suction tude is arranged on the side surface direction of silencer cylinder, and pass silencer cylinder, form two tie points with silencer cylinder; Described rear muffler steam outlet pipe is two, is located at the two ends of silencer cylinder.
For making the utility model more perfect, more detailed and concrete technological scheme below also further having proposed, to obtain best practical effect, realize goal of the invention better, and improve novelty of the present utility model and creativeness:
Described rear muffler suction tude is the member of tubulose, and it is provided with the aperture of a plurality of gas communication on the tube wall of silencer cylinder inside; A tie point of described rear muffler suction tude and silencer cylinder be the end of the member of tubulose, and the mouth of pipe is a sealing configuration.
Establish resonant cavity on the described exhaust silencer, its position is on the premuffler of the outside of silencer cylinder.
In the described silencer cylinder, be communicated with by the rear muffler assembly of tubular between the two rear muffler steam outlet pipes, and by two premuffler end face end plates supportings of two the premuffler internal partitions and the muffler assembly of silencer cylinder inside.
Symmetrical position between described two premuffler internal partitions and two premuffler end face end plates, described rear muffler assembly is two high frequency acoustic attenuation zones; Between described two premuffler internal partitions, described rear muffler assembly is a resonance region.
Between described two premuffler internal partitions and two premuffler end face end plates, described rear muffler is two reexpansion districts; Between described two premuffler internal partitions, described is a micropore jet breathing space of rear muffler.
The utility model adopts technique scheme, makes that the external structure of rear muffler and internal structure are relatively simple, and the overall weight of system reduces; Can reach simultaneously the purpose that wideband is eliminated the noise, inserting loss can meet design requirement; Car load back and left and right side all can not be seen the rear muffler cylindrical shell, make vehicle modeling seem compact more, cooperate two shiny tail pipe decorative cover simultaneously, seem full of moving sense.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is the form structure schematic representation of rear muffler related in the utility model;
Fig. 2 is the internal structure schematic representation of premuffler;
Fig. 3 is the structural representation of the inside of the rear muffler shown in Fig. 1.
Be labeled as among the figure: 1, high frequency acoustic attenuation zone, 2, resonance region, 3, the rear muffler assembly, 4, the rear muffler cylindrical shell, 5, the rear muffler suction tude, 6, the rear muffler steam outlet pipe, 7, the premuffler internal partition, 8, premuffler end face end plate.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.
As Fig. 1, Fig. 2 and the expressed structure of the present utility model of Fig. 3, be a kind of exhaust silencer that is used for the air exchange system of motor car engine, particularly the rear muffler assembly 3, comprise silencer cylinder 4, rear muffler suction tude 5 and rear muffler steam outlet pipe 6.
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize the reasonable Arrangement rear muffler external form, simplify the goal of the invention of its internal structure, the technological scheme that the utility model is taked is:
As shown in Figure 1 to Figure 3, this exhaust silencer provided by the utility model, its rear muffler suction tude 5 is arranged on the side surface direction of silencer cylinder 4, and passes silencer cylinder 4, forms two tie points with silencer cylinder 4; Described rear muffler steam outlet pipe 6 is two, is located at the two ends of silencer cylinder 4.
Fig. 1 is the appearance structure of rear muffler.In the existing known technology, what take is the structure that goes with each other all the time, and two rear muffler suction tude 5 enter cavity from the both ends of the surface of silencer cylinder 4, and two rear muffler steam outlet pipes 6 are present layout.Show by test, in these two kinds of schemes, the acoustics of silencing apparatus and power character performance basically identical.The processing arrangement that two advantages of advancing structure are rear muffler suction tude 5 is tradition, simple relatively.And the technology of singly advancing structure more complicated by contrast, because the bad selection of second strong point of rear muffler suction tude 5 if be arranged in the silencer cylinder 4, is difficult to realize that the cost of perhaps realizing technology is than higher on technology like this.But it is for the modal distribution of whole system and even car load, and to advance structure simple than two, and weight ratio is two simultaneously advances light in structure, and the cost of material is low.So when the final Scheme Choice, adopted and singly advanced structure in the utility model.
Exemplifying embodiment below the utility model also further provides, reference during for enforcement the utility model:
Embodiment one:
Described rear muffler suction tude 5 is the member of tubulose, and it is provided with the aperture of a plurality of gas communication on the tube wall of silencer cylinder 4 inside; A tie point of described rear muffler suction tude 5 and silencer cylinder 4 be the end of the member of tubulose, and the mouth of pipe is a sealing configuration.
On suction tude is arranged, second strong point is arranged in the upper surface of silencer cylinder 4, the manufacturability with regard to simplifying the structure to a great extent like this.
In conjunction with the internal structure of silencer cylinder 4, the strong point of simple analysis one lower inlet duct:
As shown in Figure 3,, then necessarily require between middle two premuffler internal partitions 7, to add a supporting structure,, perhaps weld a dividing plate perpendicular to the suction tude direction such as the bigger pipe of diameter if the strong point is arranged in the silencer cylinder 4.Which kind of scheme no matter all is certain to influence the volume in intermediate expansion chamber, can influence the transmission loss of medium and low frequency noise to a certain extent, and is simultaneously also very complicated on the technology of product erection welding.
As can see from Figure 1, second immovable point is chosen in the cylindrical shell upper surface, the mouth of pipe must seal so, so just can select the expansion noise-cancelling theory (promptly replacing heavy in section spout with many apertures) of micropore jet.Its advantage is to reduce the air power noise (such as impact noise) of high pressure gas emptying; Yet can not produce gas percussion and influence its durability structure on every side.
Embodiment two:
Establish resonant cavity on the described exhaust silencer,, its position is on the premuffler of silencer cylinder 4 outsides.
Disappear before the utility model has changed in the conventional art the resistive high frequency that disappears, after the disappear mentality of designing of medium and low frequency of resistance that disappears; With the lengthening that before disappear, reserve certain volume and be used for arranging resonant cavity, eliminate some fixing frequency.After only disappear and to need to arrange expansion chamber, layout and the total sound deadening capacity to internal structure all is very favourable like this.
Because on disappearing before resonant cavity being placed on, disappearing after the institute has been an expanssion type silencing apparatus fully just.We take reexpansion to eliminate the medium and low frequency noise as can be seen from figure.All greater than the design load of theory, the total transmission loss amount of vent systems is easy to just can reach the design object value volume of each expansion chamber like this; While this structure provided by the utility model, under the prerequisite that proof strength satisfies, the back pressure value adheres to specification, so just can not be very big to the engine power performance influence.
Embodiment three:
As shown in Figures 2 and 3, in the described silencer cylinder 4, rear muffler assembly 3 by tubular between the two rear muffler steam outlet pipes 6 is communicated with, and by two premuffler end face end plates, 8 supportings of two the premuffler internal partitions 7 and the muffler assembly 3 of silencer cylinder 4 inside.
Premuffler internal partition 7 also is provided with many apertures except playing the effect of supporting rear muffler assembly 3 on premuffler internal partition 7, play by air-flow, the important function of eliminating the noise; Premuffler end face end plate 8 also plays the effect of sealing except playing the effect of supporting rear muffler assembly 3 for silencer cylinder 4.
Embodiment four
As shown in Figure 2, between described two premuffler internal partitions 7 and two premuffler end face end plates 8, described rear muffler assembly 3 is two high frequency acoustic attenuation zones 1; Between described two premuffler internal partitions 7, described rear muffler assembly 3 is a resonance region 2.
At the two ends of rear muffler assembly 3 are two high frequency acoustic attenuation zones 1, and the advantage of Bu Zhiing is farthest to widen the high frequency band that is disappeared like this, farthest eliminates high-frequency noise.Middle resonance region 2 is resonant cavities of eliminating some fixed frequency noise.According to the noise peak of correspondence, can calculate each parameter value of corresponding cavity.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; 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 method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (5)
1, a kind of exhaust silencer, comprise silencer cylinder (4), rear muffler suction tude (5) and rear muffler steam outlet pipe (6), it is characterized in that: described rear muffler suction tude (5) is arranged on the side surface direction of silencer cylinder (4), and pass silencer cylinder (4), form two tie points with silencer cylinder (4); Described rear muffler steam outlet pipe (6) is two, is located at the two ends of silencer cylinder (4).
2, according to the described exhaust silencer of claim 1, it is characterized in that: described rear muffler suction tude (5) is the member of tubulose, and it is fixed on the inner tube wall of silencer cylinder (4), is provided with the aperture of a plurality of gas communication; A tie point of described rear muffler suction tude (5) and silencer cylinder (4) be the end of the member of tubulose, and the mouth of pipe is a sealing configuration.
3, according to claim 1 or 2 described exhaust silencers, it is characterized in that: establish resonant cavity on the described exhaust silencer, its position is on the premuffler of the outside of silencer cylinder (4).
4, according to the described exhaust silencer of claim 3, it is characterized in that: in the described silencer cylinder (4), rear muffler assembly (3) by tubular between the two rear muffler steam outlet pipes (6) is communicated with, and is supported by two premuffler internal partitions (7) of silencer cylinder (4) inside and two premuffler end face end plates (8) of muffler assembly (3).
5, according to the described exhaust silencer of claim 4, it is characterized in that: the symmetrical position between described two premuffler internal partitions (7) and two premuffler end face end plates (8), described rear muffler assembly (3) are two high frequency acoustic attenuation zones (1); Between described two premuffler internal partitions (7), described rear muffler assembly (3) is resonance region (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200347040U CN201236733Y (en) | 2008-04-19 | 2008-04-19 | Exhausting silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200347040U CN201236733Y (en) | 2008-04-19 | 2008-04-19 | Exhausting silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236733Y true CN201236733Y (en) | 2009-05-13 |
Family
ID=40649472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200347040U Expired - Fee Related CN201236733Y (en) | 2008-04-19 | 2008-04-19 | Exhausting silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236733Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518269A (en) * | 2013-09-17 | 2016-04-20 | 丰田自动车株式会社 | Wound muffler manufacturing method and wound muffler |
| CN105971704A (en) * | 2016-07-21 | 2016-09-28 | 重庆长安汽车股份有限公司 | Dual-row automobile muffler transversely arranged on two sides |
-
2008
- 2008-04-19 CN CNU2008200347040U patent/CN201236733Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518269A (en) * | 2013-09-17 | 2016-04-20 | 丰田自动车株式会社 | Wound muffler manufacturing method and wound muffler |
| CN105971704A (en) * | 2016-07-21 | 2016-09-28 | 重庆长安汽车股份有限公司 | Dual-row automobile muffler transversely arranged on two sides |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20150419 |
|
| EXPY | Termination of patent right or utility model |