CN104389655A - Automobile muffler - Google Patents
Automobile muffler Download PDFInfo
- Publication number
- CN104389655A CN104389655A CN201410528143.XA CN201410528143A CN104389655A CN 104389655 A CN104389655 A CN 104389655A CN 201410528143 A CN201410528143 A CN 201410528143A CN 104389655 A CN104389655 A CN 104389655A
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- China
- Prior art keywords
- dilatation chamber
- suction tude
- muffler
- inclusion
- pipe
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- 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 relates to the technical field of an automobile accessory, in particular to an automobile muffler. The automobile muffler comprises a bag body, an air inlet pipe, an exhaust pipe, an air return pipe, a first separation plate and a second separation plate, wherein the air inlet pipe, the exhaust pipe, the air return pipe, the first separation plate and the second separation plate are arranged in the bag body. The automobile muffler is characterized in that the bag body is separated into a first volume expanding cavity, a resonance cavity and a second volume expanding cavity through the first separation plate and the second separation plate, the air inlet pipe, the exhaust pipe and the air return pipe are arranged in the bag body in a way of being vertical to the separation plate, one end of the air inlet pipe is communicated with the outside of the bag body, the other end of the air inlet pipe extends into the first volume expanding cavity, a perforating cone body is arranged at the end part, ventilation holes are uniformly distributed in the pipe wall of the pipe section of the resonance cavity, one end of the air return pipe extends into the second volume extending cavity, the other end of the air return pipe extends into the first volume extending cavity, one end of the exhaust pipe extends into the second volume expanding cavity, and the other end of the exhaust pipe passes through the bag body to be communicated with the bag body. The automobile muffler has the beneficial effects that the automobile tail gas airflow reverse-phase opposite impact can be realized, and the formation of automobile exhaust noise and secondary noise can be effectively reduced.
Description
Technical field
The present invention relates to technical field of automobile, particularly relate to a kind of automotive muffler.
Background technique
In the prior art, usually impedance composite muffler is adopted.The silencing apparatus of this structure and principle remains in following defect:
One is that composite muffler sound-absorbing material reduces the corrosion resistance of inclusion to tail gas dust and the poor durability of water, simultaneously sound-absorbing material after absorbing water; Sound-absorbing material is in hot environment in addition, under the impact of high velocity air, is discharged in air after fragmentation with vehicle exhaust, serious harm environment, unfavorable health.
Two is the reasons due to structural design in automotive muffler inclusion, cause automotive muffler while noise elimination, create quadratic noise again, this mainly causes because automobile exhaust airspeed is too high, and reducing automobile exhaust airspeed is one of measure solving quadratic noise in automotive muffler.
Three is in the prior art, broken end is caused to stretch into silencing apparatus inclusion below in the ternary purifying device inner catalyst fragmentation of engine exhaust outlet, the aperture of blocking muffler tail pipe, after the engine started, inclusion is generated heat redden, have influence on the fuel tank safety on next-door neighbour silencing apparatus inclusion side, the meeting that situation is serious makes silencing apparatus inclusion pop, and is a serious threat to the safety of automobile body and driver and conductor.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, providing one to have, air-flow is anti-phase liquidates, and effectively can reduce the automotive muffler that automobile exhaust noise and quadratic noise are formed.
The technological scheme that the present invention solves the problems of the technologies described above is as follows: a kind of automotive muffler, comprises inclusion, the suction tude be arranged in described inclusion, outlet pipe, muffler, the first dividing plate and second partition, it is characterized in that:
Described first dividing plate and second partition be arranged in parallel, described inclusion are separated into the chamber of three relative closures, i.e. the first dilatation chamber, resonant cavity and the second dilatation chamber, and described suction tude, outlet pipe and muffler are arranged in parallel in described inclusion;
One end of described suction tude communicates with described inclusion outside, the other end stretches into the first dilatation chamber through described second partition and the first dividing plate, the other end of described suction tude is provided with perforation cone, and described suction tude is evenly equipped with air hole on the tube wall of pipeline section being positioned at described resonant cavity;
Described muffler is through described first dividing plate and second partition, and described second dilatation chamber is stretched in one end, and the other end stretches into described first dilatation chamber;
Described outlet pipe is through described first dividing plate and second partition, and described second dilatation chamber is stretched in one end, and the other end is through described inclusion and ft connection.
The invention has the beneficial effects as follows: the present invention is according to the anti-phase acoustic attenuation performance of the diesel engine exhaust muffler that liquidates and the achievement in research of aerodynamic quality, in conjunction with the feature that the little installation in bottom of car space is compact, utilize in silencing apparatus inclusion and suction tude, outlet pipe and muffler are set, make air-flow reciprocal back and forth, and utilize perforation cone, realize that vehicle exhaust air-flow is anti-phase to liquidate, effectively can reduce the formation of automobile exhaust noise and quadratic noise; Owing to it also avoid on the impact of the corrosion resistance of inclusion with because these material agings are on the impact of environment without sound-absorbing material; Be adopt cone water conservancy diversion, the anti-phase structure reduction automobile exhaust airspeed that liquidates again, thus effectively reduce pneumatic noise, and avoid the formation of quadratic noise.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the uniform aperture in described bodkin surface, the vapor permeation area summation of described aperture and the sectional area of described suction tude suitable.
The beneficial effect of above-mentioned further scheme is adopted to be, this uniform aperture in bodkin surface, there is the effect of water conservancy diversion motor exhaust, effectively can reduce the quadratic noise that inclusion internal turbulence causes, air-flow forms air-flow and liquidates in cone, reduce motor exhaust airspeed, noise is eliminated the noise through the keyhole formation diffraction of cone, noise reflexes in resonant cavity through outer surface of cone, form resonant silencing, form anti-phase noise elimination through suction tude inwall bounce back arrival gas direction.
The described suitable vapor permeation area summation referring to described aperture can not be too little and too large, substantially will be approximately equal to the sectional area of described suction tude, vapour lock can be avoided like this to be formed.
Further, the extrusion of described suction tude in described first dilatation chamber equals 1/4 of described first dilatation chamber total length.
The beneficial effect of above-mentioned further scheme is adopted to be that this set can ensure that the outlet end gas of suction tude has enough diffusion space in described first dilatation chamber, buffering motor exhaust pulse pneumatic, and can the noise elimination of expansion low-frequency band.
Further, the extrusion of described muffler in described first dilatation chamber and the second dilatation chamber is respectively 1/2 of the total length in described first dilatation chamber and the second dilatation chamber.
The beneficial effect of above-mentioned further scheme is adopted to be that this set can make the circulation of air-flow in inclusion and the mutual undertaking between suction tude, outlet pipe and muffler is more smooth and easy and the noise elimination of expansion low-frequency band.
Further, described perforation cone is stainless steel, and its thickness is 1 ~ 1.2 millimeter.
The beneficial effect of above-mentioned further scheme is adopted to be adopt stainless steel, lighter and more corrosion-resistant while guarantee uses rigidity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of middle punch cone of the present invention;
Fig. 3 is the making structural representation of middle punch cone of the present invention.
In Fig. 1 to Fig. 3,1, inclusion; 2, suction tude; 3, outlet pipe; 4, muffler; 5, perforation cone; 6, the first dividing plate; 7, second partition; 8, the first dilatation chamber; 9, resonant cavity; 10, the second dilatation chamber; 11, suction tude first pipeline section; 12, suction tude second pipeline section; 13, suction tude the 3rd pipeline section; 14, aperture.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of automotive muffler, comprises inclusion 1, the suction tude 2 be arranged in described inclusion 1, outlet pipe 3, muffler 4, cone 5, first dividing plate 6 and second partition 7, it is characterized in that:
Described first dividing plate 6 and second partition 7 be arranged in parallel, described inclusion 1 is separated into the cavity volume of three relative closures, i.e. the first dilatation chamber 8, resonant cavity 9 and the second dilatation chamber 10, described suction tude 2, outlet pipe 3 and muffler 4 be parallel to each other and with first, second dividing plate described perpendicular be arranged in described inclusion 1; Here relative closure refers to and passes through except stream guidance except crossing pipeline between each cavity volume, and each self-forming enclosed space is spatially isolated each other.
One end of described suction tude 2 communicates with described inclusion 1 outside, the other end stretches into the first dilatation chamber 8 through described second partition 7 and the first dividing plate 6, the other end of described suction tude 2 is provided with perforation cone 5, and namely described suction tude 2 is separated into three pipeline sections by described second partition 7 and the first dividing plate 6: i.e. suction tude first pipeline section 11; Suction tude second pipeline section 12, suction tude the 3rd pipeline section 13.Described suction tude 2 is evenly equipped with air hole on the tube wall being positioned at the pipeline section of described resonant cavity 9 (i.e. suction tude second pipeline section); Described muffler 4 is through described first dividing plate 6 and second partition 7, and described second dilatation chamber 10 is stretched in one end, and the other end stretches into described first dilatation chamber 8;
Described outlet pipe 3 is through described first dividing plate 6 and second partition 7, and described second dilatation chamber 10 is stretched in one end, and the other end is through described inclusion 1 and ft connection.
The surperficial uniform aperture 14 of described perforation cone 5, the vapor permeation area summation of described aperture 14 and the sectional area of described suction tude 2 suitable.
The extrusion of described suction tude 2 in described first dilatation chamber 8 equals 1/4 of described first dilatation chamber 8 total length.
The extrusion of described muffler 4 in described first dilatation chamber 8 and the second dilatation chamber 10 is respectively 1/2 of the total length in described first dilatation chamber 8 and the second dilatation chamber 10.
Described perforation cone 5 is stainless steel, and its thickness is 1 ~ 1.2 millimeter.
As shown in Figures 2 and 3, when concrete making perforation cone 5, circular plate material is first stamped out by after corrosion resistant plate blanking, then circular plate is cut into 1/4 covering of the fan, each covering of the fan is put into punching on Special punching die, a punching press completes, then it is shaping the covering of the fan of hole punch to be put into special cone shaping die, after shaping, namely the spot welding of cone edge is completed cone course of working.
In silencing apparatus core wire process, perforation cone 5 is welded on the outlet end of suction tude 2.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an automotive muffler, comprises inclusion, the suction tude be arranged in described inclusion, outlet pipe, muffler, the first dividing plate and second partition, it is characterized in that:
Described first dividing plate and second partition be arranged in parallel, described inclusion are separated into the chamber of three relative closures, i.e. the first dilatation chamber, resonant cavity and the second dilatation chamber, and described suction tude, outlet pipe and muffler are arranged in parallel in described inclusion;
One end of described suction tude communicates with described inclusion outside, the other end stretches into the first dilatation chamber through described second partition and the first dividing plate, the other end of described suction tude is provided with perforation cone, and described suction tude is evenly equipped with air hole on the tube wall of pipeline section being positioned at described resonant cavity;
Described muffler is through described first dividing plate and second partition, and described second dilatation chamber is stretched in one end, and the other end stretches into described first dilatation chamber;
Described outlet pipe is through described first dividing plate and second partition, and described second dilatation chamber is stretched in one end, and the other end is through described inclusion and ft connection.
2. automotive muffler according to claim 1, is characterized in that, the uniform aperture in described bodkin surface, the vapor permeation area summation of described aperture and the sectional area of described suction tude suitable.
3. automotive muffler according to claim 1 and 2, is characterized in that, the extrusion of described suction tude in described first dilatation chamber equals 1/4 of described first dilatation chamber total length.
4. automotive muffler according to claim 3, is characterized in that, the extrusion of described muffler in described first dilatation chamber and the second dilatation chamber is respectively 1/2 of the total length in described first dilatation chamber and the second dilatation chamber.
5. automotive muffler according to claim 1, is characterized in that, described perforation cone is stainless steel, and its thickness is 1 ~ 1.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528143.XA CN104389655A (en) | 2014-10-09 | 2014-10-09 | Automobile muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528143.XA CN104389655A (en) | 2014-10-09 | 2014-10-09 | Automobile muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104389655A true CN104389655A (en) | 2015-03-04 |
Family
ID=52607604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410528143.XA Pending CN104389655A (en) | 2014-10-09 | 2014-10-09 | Automobile muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389655A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816159A1 (en) * | 1978-04-14 | 1979-10-25 | Boysen Friedrich Gmbh Co Kg | REFLECTIVE SOUND ABSORBER FOR COMBUSTION MACHINERY |
| JPS63129112A (en) * | 1986-11-18 | 1988-06-01 | Calsonic Corp | Muffler |
| CN2045537U (en) * | 1988-07-28 | 1989-10-04 | 浦晓亭 | Airflow counteracting muffler |
| JP2000054822A (en) * | 1998-08-06 | 2000-02-22 | Honda Motor Co Ltd | Muffler |
| EP1030039A1 (en) * | 1999-02-18 | 2000-08-23 | Hyundai Motor Company | Semi-active muffler for internal combustion engine |
| JP2003206718A (en) * | 2002-01-16 | 2003-07-25 | Fuji Heavy Ind Ltd | Muffler |
| US20040065503A1 (en) * | 2002-10-07 | 2004-04-08 | Honda Giken Kogyo Kabushiki Kaisha | Valve device for silencer |
| CN201354664Y (en) * | 2009-01-16 | 2009-12-02 | 杨广洲 | Variable-frequency muffler |
| CN201539296U (en) * | 2009-09-23 | 2010-08-04 | 北京绿创环保设备股份有限公司 | Resistant vehicle exhaust gas silencer |
| CN202970853U (en) * | 2012-10-31 | 2013-06-05 | 长城汽车股份有限公司 | Silencer for vehicular exhaust system |
-
2014
- 2014-10-09 CN CN201410528143.XA patent/CN104389655A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2816159A1 (en) * | 1978-04-14 | 1979-10-25 | Boysen Friedrich Gmbh Co Kg | REFLECTIVE SOUND ABSORBER FOR COMBUSTION MACHINERY |
| JPS63129112A (en) * | 1986-11-18 | 1988-06-01 | Calsonic Corp | Muffler |
| CN2045537U (en) * | 1988-07-28 | 1989-10-04 | 浦晓亭 | Airflow counteracting muffler |
| JP2000054822A (en) * | 1998-08-06 | 2000-02-22 | Honda Motor Co Ltd | Muffler |
| EP1030039A1 (en) * | 1999-02-18 | 2000-08-23 | Hyundai Motor Company | Semi-active muffler for internal combustion engine |
| JP2003206718A (en) * | 2002-01-16 | 2003-07-25 | Fuji Heavy Ind Ltd | Muffler |
| US20040065503A1 (en) * | 2002-10-07 | 2004-04-08 | Honda Giken Kogyo Kabushiki Kaisha | Valve device for silencer |
| CN201354664Y (en) * | 2009-01-16 | 2009-12-02 | 杨广洲 | Variable-frequency muffler |
| CN201539296U (en) * | 2009-09-23 | 2010-08-04 | 北京绿创环保设备股份有限公司 | Resistant vehicle exhaust gas silencer |
| CN202970853U (en) * | 2012-10-31 | 2013-06-05 | 长城汽车股份有限公司 | Silencer for vehicular exhaust system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150304 |
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| RJ01 | Rejection of invention patent application after publication |