CN104153862A - Low-noise automotive silencer - Google Patents
Low-noise automotive silencer Download PDFInfo
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- CN104153862A CN104153862A CN201410099801.8A CN201410099801A CN104153862A CN 104153862 A CN104153862 A CN 104153862A CN 201410099801 A CN201410099801 A CN 201410099801A CN 104153862 A CN104153862 A CN 104153862A
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- honeycomb duct
- noise reduction
- reduction chamber
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- wing plate
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- 230000003584 silencer Effects 0.000 title abstract 4
- 230000001154 acute effect Effects 0.000 claims abstract description 52
- 230000030279 gene silencing Effects 0.000 claims abstract description 43
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 claims description 3
- 235000011067 sorbitan monolaureate Nutrition 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 description 18
- 238000001228 spectrum Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000003313 weakening effect Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a low-noise automotive silencer. According to the low-noise automotive silencer, a plurality of double-door/window-shaped holes are formed in the flat rectangular silencing cylinder piece, each double-door/window-shaped hole comprises a rectangular sound passing hole formed in the flat rectangular silencing cylinder piece, each sound passing hole is provided with a cross beam, the axis of each cross beam coincides with the connecting line of the central points of the opposite edges of the corresponding sound passing hole, a flange A and a flange B are connected to the two sides of each cross beam, each sound passing hole is divided into two symmetrical through holes with the same area by the corresponding cross beam, an acute angle A is formed between each flange A and the flat rectangular silencing cylinder piece, an acute angle B is formed between each flange B and the flat rectangular silencing cylinder piece, the area of each flange A is equal to the area of the portion, located on the left side of the corresponding cross beam, of the corresponding sound passing hole, and the area of each flange B is equal to the area of the portion, located on the right side of the corresponding cross beam, of the corresponding sound passing hole. The low-noise automotive silencer has the advantages of being simple in structure and high in noise resistance.
Description
Technical field
The present invention relates to automotive silencing field, specifically: a kind of low noise automotive muffler.
Background technique
Silencing pot end-cap assembly, as the significant components of automobile silencing, existing structure is mainly made up of silencing pot and end cap, and wherein, silencing pot is provided with the circle of evenly arranging and crosses sound hole, and end cap is slab construction.Above-mentioned hush pipe is used in after the car of Alto, can attenuating noise, and when the original output noise of motor is 95 decibels, after the noise reduction after silencing pot end-cap assembly is processed, 73.58 decibels of its outputs, its noise is still larger.
Summary of the invention
Technical problem to be solved by this invention is that a kind of low noise automotive muffler that a kind of noise reduction value is large is set.
The present invention addresses the above problem adopted technological scheme: a kind of low noise automotive muffler, comprise the first noise reduction chamber connecting successively, the second noise reduction chamber, the 3rd noise reduction chamber, the termination of giving vent to anger, indoor second honeycomb duct that is provided with of the first silencing cavity, after extending into the second honeycomb duct by the first honeycomb duct, introduces the gas of eliminating the noise, the first noise reduction chamber is communicated with the second noise reduction chamber by the 3rd honeycomb duct, the second noise reduction chamber is communicated with the 3rd noise reduction chamber by the 4th honeycomb duct, the 3rd noise reduction chamber is communicated with external environment condition after running through by the 5th honeycomb duct the termination of giving vent to anger, the second honeycomb duct is the cylindrical shell that front-end and back-end are all sealed, and the second honeycomb duct is communicated with the first noise reduction chamber by the some air passing holes that are arranged on self outer wall, one end that the 3rd honeycomb duct is positioned at the first noise reduction chamber is closed end, and one end that the 4th honeycomb duct and the 5th honeycomb duct are positioned at the 3rd noise reduction chamber is closed end,
The 5th honeycomb duct, the 4th honeycomb duct, the 3rd honeycomb duct equal open and flat of rectangular silencing pot after flattening, open and flat of silencing pot is provided with several two-door window openings, two-door window opening comprises the sound hole of crossing of the rectangle that is arranged on open and flat of silencing pot, cross sound hole and be provided with crossbeam, the axis of crossbeam overlaps with the line of crossing sound hole relative edge mid point, crossbeam both sides are connected with wing plate A and wing plate B, crossbeam is divided into homalographic and two symmetrical through holes by crossing sound hole, between open and flat of wing plate A and silencing pot, form acute angle A, between open and flat of wing plate B and silencing pot, form acute angle B, the area of wing plate A equals crossbeam left side and crosses sound hole region area, the area of wing plate B equals crossbeam right side and crosses sound hole region area,
The region that the 3rd honeycomb duct is provided with two-door window opening is M district, it is indoor that M district is positioned at the first silencing cavity, the region that the 4th honeycomb duct is provided with two-door window opening is N district, it is indoor that N district is positioned at the 3rd silencing cavity, the region that the 5th honeycomb duct is provided with two-door window opening is X district, it is indoor that X district is positioned at the 3rd silencing cavity, wherein the wing plate A of the 3rd honeycomb duct and wing plate B are positioned at the 3rd honeycomb duct pipe inner side, the wing plate A of the 5th honeycomb duct and wing plate B are positioned at the 5th honeycomb duct pipe inner side, and the wing plate A of the 4th honeycomb duct and wing plate B are positioned at the 4th honeycomb duct pipe inner side.
The circular noise-cancelling theory of crossing sound hole of tradition is: the structure of micropole diffusor is the straight tube of an endcapped, is drilled with a lot of apertures on tube wall.The principle of micropole diffusor is taking the frequency spectrum of jet noise as foundation, replace with a lot of little spouts if the gross area of maintenance spout is constant, when the frequency spectrum of air-flow during through small holes, jet noise will be shifted to high frequency or ultra-high frequency, audible sound composition in frequency spectrum is obviously reduced, thereby reduce interference and injury to people.
Design of the present invention is: change traditional circular hole into rectangular opening, utilize crossbeam to intercept into 2 symmetrical through holes by crossing sound hole, and utilize wing plate A and wing plate B to form sound wave obstruct break-in, between two adjacent mistake sound holes, propagate to the adjacent sound hole direction of crossing under the leading role of wing plate A and wing plate B from the sound wave of crossing sound hole outflow, final mutual weakening, reaches the object of noise reduction.Under the same conditions, be sound hole structure difference, the present invention compares the sound hole of crossing of traditional round structure, and when the 5th honeycomb duct or the 4th honeycomb duct or the 3rd honeycomb duct are set separately, noise reduction index of the present invention can be controlled at 51.5-68.4 decibel interval.
Preferably, wing plate A and wing plate B are rectangle.
The angle of acute angle A equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree, and the angle of acute angle B equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree.
Through above-mentioned experiment, the present invention is preferred, and when the angle of acute angle A equals 30 degree, the angle of acute angle B equals 30 degree.
Preferably, the angle of acute angle A equals acute angle B.
Further, every three two-door window openings rearrange the two-door window opening group of row formula according to yi word pattern, three two-door window opening groups of row formula are not arranged and are formed the two-door window opening group of determinant according to row, the column direction of being expert at of the two-door window opening group of two row formulas separately flushes and arranges, and the two-door window opening group of row formula in the middle of being positioned at all misplaces and arranges with the two-door window opening group of row formula of both sides.
The indoor silencing board that is also provided with of the second silencing cavity, silencing board is between the 4th honeycomb duct and the 3rd honeycomb duct.
The axis angle of the axis of the 5th honeycomb duct and the 4th honeycomb duct is angle P, and the span 20 of angle P is spent to 70 degree.
Through experiment, when the 5th honeycomb duct or the 4th honeycomb duct or the 3rd honeycomb duct are set separately, and when the angle of acute angle A equals 20 degree, the angle of acute angle B equals 20 while spending, noise reduction index of the present invention can be controlled at 57.5 decibels, through experiment, when the angle of acute angle A equals 30 degree, the angle of acute angle B equals 30 while spending, noise reduction index of the present invention can be controlled at 51.5 decibels, through experiment, when the angle of acute angle A equals 20 degree, the angle of acute angle B equals 20 while spending, noise reduction index of the present invention can be controlled at 57 decibels, through experiment, when the angle of acute angle A equals 40 degree, the angle of acute angle B equals 40 while spending, noise reduction index of the present invention can be controlled at 60.4 decibels, through experiment, when the angle of acute angle A equals 50 degree, the angle of acute angle B equals 50 while spending, noise reduction index of the present invention can be controlled at 64 decibels, through experiment, when the angle of acute angle A equals 60 degree, the angle of acute angle B equals 60 while spending, noise reduction index of the present invention can be controlled at 65.8 decibels, through experiment, when the angle of acute angle A equals 70 degree, the angle of acute angle B equals 70 while spending, noise reduction index of the present invention can be controlled at 68.4 decibels.
Through experiment, after the 5th honeycomb duct, the first honeycomb duct, the second honeycomb duct, the first noise reduction chamber, the 3rd honeycomb duct, the second noise reduction chamber, silencing board, the 4th honeycomb duct, the 3rd noise reduction chamber, the termination of giving vent to anger are combined according to said structure, can export in 41.7-52.1 decibel interval by control noise.
To sum up, the invention has the beneficial effects as follows: simple in structure, anti-noise ability is strong.
Brief description of the drawings
Fig. 1 is the front view for open and flat of silencing pot.
Fig. 2 is side planing figure of the present invention.
Number in the figure is expressed as: 1, two-door window opening; 2, the two-door window opening group of row formula; 3, the two-door window opening group of determinant; 4, wing plate A; 5, wing plate B; 6, cross sound hole; 7, open and flat of silencing pot; 8, the 5th honeycomb duct; 81, the first honeycomb duct; 82, the second honeycomb duct; 83, the first noise reduction chamber; 84, the 3rd honeycomb duct; 85, the second noise reduction chamber; 86, silencing board; 87, the 4th honeycomb duct; 88, the 3rd noise reduction chamber; 89, the termination of giving vent to anger.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
As Figure 1-Figure 2.
A kind of low noise automotive muffler, comprise the first noise reduction chamber 83, the second noise reduction chamber 85, the 3rd noise reduction chamber 88, the termination 89 of giving vent to anger that connect successively, in the first noise reduction chamber 83, be provided with the second honeycomb duct 82, after extending into the second honeycomb duct 82 by the first honeycomb duct 81, introduces the gas of eliminating the noise, the first noise reduction chamber 83 is communicated with the second noise reduction chamber 85 by the 3rd honeycomb duct 84, the second noise reduction chamber 85 is communicated with the 3rd noise reduction chamber 88 by the 4th honeycomb duct 87, and the 3rd noise reduction chamber 88 is communicated with external environment condition after running through by the 5th honeycomb duct 8 termination 89 of giving vent to anger; The cylindrical shell that the second honeycomb duct 82 all seals for front-end and back-end, the second honeycomb duct 82 is communicated with the first noise reduction chamber 83 by the some air passing holes that are arranged on self outer wall; One end that the 3rd honeycomb duct 84 is positioned at the first noise reduction chamber 83 is closed end, and one end that the 4th honeycomb duct 87 and the 5th honeycomb duct 8 are positioned at the 3rd noise reduction chamber 88 is closed end;
The 5th honeycomb duct 8, the 4th honeycomb duct 87, the 3rd honeycomb duct 84 equal open and flat 7 of rectangular silencing pots after flattening, open and flat of silencing pot is provided with several two-door window openings 1, what two-door window opening comprised the rectangle that is arranged on open and flat 7 of silencing pot crosses sound hole 6, cross sound hole 6 and be provided with crossbeam, the axis of crossbeam overlaps with the line of crossing sound hole 6 relative edge's mid points, crossbeam both sides are connected with wing plate A4 and wing plate B5, crossbeam is divided into homalographic and two symmetrical through holes by crossing sound hole 6, between open and flat of wing plate A4 and silencing pot, form acute angle A, between open and flat of wing plate B5 and silencing pot, form acute angle B, the area of wing plate A4 equals crossbeam left side and crosses sound hole 6 region areas, the area of wing plate B5 equals crossbeam right side and crosses sound hole 6 region areas.
The region that the 3rd honeycomb duct 84 is provided with two-door window opening 1 is M district, M district is positioned at the first noise reduction chamber 83, the region that the 4th honeycomb duct 87 is provided with two-door window opening 1 is N district, N district is positioned at the 3rd noise reduction chamber 88, the region that the 5th honeycomb duct 8 is provided with two-door window opening 1 is X district, X district is positioned at the 3rd noise reduction chamber 88, wherein the wing plate A4 of the 3rd honeycomb duct 84 and wing plate B5 are positioned at the 3rd honeycomb duct 84 pipe inner sides, the wing plate A4 of the 5th honeycomb duct 8 and wing plate B5 are positioned at the 5th honeycomb duct 8 pipe inner sides, the wing plate A4 of the 4th honeycomb duct 87 and wing plate B5 are positioned at the 4th honeycomb duct 87 pipe inner sides.
The noise reduction flow process of this enforcement is: gas to be eliminated the noise is input to the second honeycomb duct 82 from the first honeycomb duct 81, the cylindrical shell all sealing for front-end and back-end due to the second honeycomb duct 82, drive for the first time and eliminate the noise and process at the second honeycomb duct 82, gas to be eliminated the noise flows to the first noise reduction chamber 83 from some air passing holes of the second honeycomb duct 82 self outer wall, pass through after air passing hole wait the gas of eliminating the noise, sound wave is cancelled each other and is weakened, after the gas of eliminating the noise enters the first noise reduction chamber 83, after two-door window opening 1 by the 3rd honeycomb duct 84, enter the 3rd honeycomb duct 84, in dividing under effect of two-door window opening 1, the interior formation noise reduction of the 3rd honeycomb duct 84 interval, gas to be eliminated the noise is in the interior further weakening of the 3rd honeycomb duct 84, gas to be eliminated the noise enters the second noise reduction chamber 85 by the 3rd honeycomb duct 84, cushion break-in at the second noise reduction chamber 85, further carry out noise reduction processing, finally enter the 4th honeycomb duct 87, gas to be eliminated the noise flows to the 3rd noise reduction chamber 88 from the two-door window opening 1 of the 4th honeycomb duct 87, eliminate the noise and process in the interior formation of the 3rd noise reduction chamber 88, gas to be eliminated the noise finally flows to the inner also discharge of the 5th honeycomb duct 8 by the two-door window opening of the 5th honeycomb duct 81 place, in the 5th honeycomb duct 8 due to the leading role of two-door window opening 1, gas to be eliminated the noise is further weakened.
The circular noise-cancelling theory of crossing sound hole of tradition is: the structure of micropole diffusor is the straight tube of an endcapped, is drilled with a lot of apertures on tube wall.The principle of micropole diffusor is taking the frequency spectrum of jet noise as foundation, replace with a lot of little spouts if the gross area of maintenance spout is constant, when the frequency spectrum of air-flow during through small holes, jet noise will be shifted to high frequency or ultra-high frequency, audible sound composition in frequency spectrum is obviously reduced, thereby reduce interference and injury to people.
Design of the present invention is: change traditional circular hole into rectangular opening, utilize crossbeam to intercept into 2 symmetrical through holes by crossing sound hole 6, and utilize wing plate A4 and wing plate B5 to form sound wave obstruct break-in, between two adjacent mistake sound holes 6, propagate to the adjacent sound hole direction of crossing under the leading role of wing plate A4 and wing plate B5 from the sound wave that sound hole 6 flows out excessively, final mutual weakening, reaches the object of noise reduction.Under the same conditions, it was sound hole structure difference, the present invention compares the sound hole of crossing of traditional round structure, and when the 5th honeycomb duct 8 or the 4th honeycomb duct 87 or the 3rd honeycomb duct 84 are set separately, noise reduction index of the present invention can be controlled at 51.5-68.4 decibel interval.
Preferably, wing plate A4 and wing plate B5 are rectangle.
The angle of acute angle A equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree, and the angle of acute angle B equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree.
Through above-mentioned experiment, the present invention is preferred, and when the angle of acute angle A equals 30 degree, the angle of acute angle B equals 30 degree.
Preferably, the angle of acute angle A equals acute angle B.
Further, every three two-door window openings 1 rearrange the two-door window opening group 2 of row formula according to yi word pattern, three two-door window opening groups 2 of row formula are not arranged and are formed the two-door window opening group 3 of determinant according to row, the column direction of being expert at of the two-door window opening group 2 of two row formulas separately flushes and arranges, and the two-door window opening group 2 of row formula in the middle of being positioned at all misplaces and arranges with the two-door window opening group 2 of row formula of both sides.
Through experiment, when the 5th honeycomb duct 8 or the 4th honeycomb duct 87 or the 3rd honeycomb duct 84 are set separately, and when the angle of acute angle A equals 20 degree, the angle of acute angle B equals 20 while spending, noise reduction index of the present invention can be controlled at 57.5 decibels, through experiment, when the angle of acute angle A equals 30 degree, the angle of acute angle B equals 30 while spending, noise reduction index of the present invention can be controlled at 51.5 decibels, through experiment, when the angle of acute angle A equals 20 degree, the angle of acute angle B equals 20 while spending, noise reduction index of the present invention can be controlled at 57 decibels, through experiment, when the angle of acute angle A equals 40 degree, the angle of acute angle B equals 40 while spending, noise reduction index of the present invention can be controlled at 60.4 decibels, through experiment, when the angle of acute angle A equals 50 degree, the angle of acute angle B equals 50 while spending, noise reduction index of the present invention can be controlled at 64 decibels, through experiment, when the angle of acute angle A equals 60 degree, the angle of acute angle B equals 60 while spending, noise reduction index of the present invention can be controlled at 65.8 decibels, through experiment, when the angle of acute angle A equals 70 degree, the angle of acute angle B equals 70 while spending, noise reduction index of the present invention can be controlled at 68.4 decibels.Through experiment, after the 5th honeycomb duct, the first honeycomb duct, the second honeycomb duct, the first noise reduction chamber, the 3rd honeycomb duct, the second noise reduction chamber, silencing board, the 4th honeycomb duct, the 3rd noise reduction chamber, the termination of giving vent to anger are combined according to said structure, can export in 41.7-52.1 decibel interval by control noise.
In the second noise reduction chamber 85, be also provided with silencing board 86, silencing board 86 is between the 4th honeycomb duct 87 and the 3rd honeycomb duct 84.Further reduce by 2 decibels of left and right of noise.Silencing board 86 is set simultaneously and can shortens the 3rd honeycomb duct 84 and the length of the 4th honeycomb duct 87 in the second noise reduction chamber 85, then the 3rd honeycomb duct 84 that 86 of silencing boards need to grow if do not arranged and the 4th honeycomb duct 87 are interspersed and could form the bending reflux line of air-flow.
For the ease of exhaust, the axis angle of the axis of the 5th honeycomb duct 8 and the 4th honeycomb duct 87 is angle P, and the span 20 of angle P is spent to 70 degree.
As mentioned above, can realize preferably the present invention.
Claims (7)
1. a low noise automotive muffler, it is characterized in that, comprise the first noise reduction chamber (83) connecting successively, the second noise reduction chamber (85), the 3rd noise reduction chamber (88), the termination (89) of giving vent to anger, in the first noise reduction chamber (83), be provided with the second honeycomb duct (82), after extending into the second honeycomb duct (82) by the first honeycomb duct (81), introduces the gas of eliminating the noise, the first noise reduction chamber (83) is communicated with the second noise reduction chamber (85) by the 3rd honeycomb duct (84), the second noise reduction chamber (85) is communicated with the 3rd noise reduction chamber (88) by the 4th honeycomb duct (87), the 3rd noise reduction chamber (88) is communicated with external environment condition after running through the termination of giving vent to anger (89) by the 5th honeycomb duct (8), the cylindrical shell that the second honeycomb duct (82) all seals for front-end and back-end, the second honeycomb duct (82) is communicated with the first noise reduction chamber (83) by the some air passing holes that are arranged on self outer wall, one end that the 3rd honeycomb duct (84) is positioned at the first noise reduction chamber (83) is closed end, and one end that the 4th honeycomb duct (87) and the 5th honeycomb duct (8) are positioned at the 3rd noise reduction chamber (88) is closed end,
The 5th honeycomb duct (8), the 4th honeycomb duct (87), the 3rd honeycomb duct (84) equal rectangular open and flat of silencing pot (7) after flattening, open and flat of silencing pot is provided with several two-door window openings (1), what two-door window opening comprised the rectangle that is arranged on silencing pot open and flat (7) crosses sound hole (6), cross sound hole (6) and be provided with crossbeam, the axis of crossbeam overlaps with the line of crossing sound hole (6) relative edge's mid point, crossbeam both sides are connected with wing plate A(4) and wing plate B(5), crossbeam will be crossed sound hole (6) and be divided into homalographic and two symmetrical through holes, wing plate A(4) and open and flat of silencing pot between form acute angle A, wing plate B(5) and open and flat of silencing pot between form acute angle B, wing plate A(4) area equal crossbeam left side and cross sound hole (6) region area, wing plate B(5) area equal crossbeam right side and cross sound hole (6) region area,
The region that the 3rd honeycomb duct (84) is provided with two-door window opening (1) is M district, M district is positioned at the first noise reduction chamber (83), the region that the 4th honeycomb duct (87) is provided with two-door window opening (1) is N district, N district is positioned at the 3rd noise reduction chamber (88), the region that the 5th honeycomb duct (8) is provided with two-door window opening (1) is X district, X district is positioned at the 3rd noise reduction chamber (88), the wherein wing plate A(4 of the 3rd honeycomb duct (84)) and wing plate B(5) be positioned at inside the 3rd honeycomb duct (84) pipe, the wing plate A(4 of the 5th honeycomb duct (8)) and wing plate B(5) be positioned at inside the 5th honeycomb duct (8) pipe, the wing plate A(4 of the 4th honeycomb duct (87)) and wing plate B(5) be positioned at inside the 4th honeycomb duct (87) pipe.
2. a kind of low noise automotive muffler according to claim 1, is characterized in that wing plate A(4) and wing plate B(5) be rectangle.
3. a kind of low noise automotive muffler according to claim 1, is characterized in that, the angle of acute angle A equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree, and the angle of acute angle B equals 20 degree or 30 degree or 40 degree or 50 degree or 60 degree or 70 degree.
4. a kind of low noise automotive muffler according to claim 1, is characterized in that, the angle of acute angle A equals acute angle B.
5. a kind of low noise automotive muffler according to claim 1, it is characterized in that, every three two-door window openings (1) rearrange the two-door window opening group of row formula (2) according to yi word pattern, three two-door window opening groups of row formula (2) are not arranged and are formed the two-door window opening group of determinant (3) according to row, the column direction of being expert at of the two-door window opening groups of two row formulas (2) separately flushes and arranges, and the two-door window opening group of row formula (2) in the middle of being positioned at all misplaces and arranges with the two-door window opening group of row formula (2) of both sides.
6. a kind of low noise automotive muffler according to claim 1, is characterized in that, in the second noise reduction chamber (85), is also provided with silencing board (86), and silencing board (86) is positioned between the 4th honeycomb duct (87) and the 3rd honeycomb duct (84).
7. a kind of low noise automotive muffler according to claim 1, is characterized in that, the axis angle of the axis of the 5th honeycomb duct (8) and the 4th honeycomb duct (87) is angle P, and the span 20 of angle P is spent to 70 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410099801.8A CN104153862B (en) | 2014-03-18 | 2014-03-18 | A kind of low noise automotive muffler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410099801.8A CN104153862B (en) | 2014-03-18 | 2014-03-18 | A kind of low noise automotive muffler |
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| Publication Number | Publication Date |
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| CN104153862A true CN104153862A (en) | 2014-11-19 |
| CN104153862B CN104153862B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410099801.8A Active CN104153862B (en) | 2014-03-18 | 2014-03-18 | A kind of low noise automotive muffler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517658A (en) * | 2019-08-01 | 2019-11-29 | 上海汇海真空机械设备有限公司 | A kind of gas vent silencer of vacuum nitrogen Pesticidal and sterilizing sterilizing equipment decontaminating apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10148413A1 (en) * | 2001-09-29 | 2003-04-24 | Eberspaecher J Gmbh & Co | Flow-guiding pipe used in an exhaust silencer of an internal combustion engine comprises an axial section with a radial perforation, and a turbulator device provided upstream of the perforated section on an inner wall of the pipe |
| CN2833127Y (en) * | 2005-11-12 | 2006-11-01 | 杨百昌 | Energy-saving muffler for enclosed refrigerant compressor |
| GB2496368A (en) * | 2011-10-12 | 2013-05-15 | Ford Global Tech Llc | An acoustic attenuator for an air intake of an engine booster compressor turbine |
| CN203742711U (en) * | 2014-03-18 | 2014-07-30 | 成都陵川常友汽车部件制造有限公司 | Automobile silencer |
-
2014
- 2014-03-18 CN CN201410099801.8A patent/CN104153862B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10148413A1 (en) * | 2001-09-29 | 2003-04-24 | Eberspaecher J Gmbh & Co | Flow-guiding pipe used in an exhaust silencer of an internal combustion engine comprises an axial section with a radial perforation, and a turbulator device provided upstream of the perforated section on an inner wall of the pipe |
| CN2833127Y (en) * | 2005-11-12 | 2006-11-01 | 杨百昌 | Energy-saving muffler for enclosed refrigerant compressor |
| GB2496368A (en) * | 2011-10-12 | 2013-05-15 | Ford Global Tech Llc | An acoustic attenuator for an air intake of an engine booster compressor turbine |
| CN203742711U (en) * | 2014-03-18 | 2014-07-30 | 成都陵川常友汽车部件制造有限公司 | Automobile silencer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517658A (en) * | 2019-08-01 | 2019-11-29 | 上海汇海真空机械设备有限公司 | A kind of gas vent silencer of vacuum nitrogen Pesticidal and sterilizing sterilizing equipment decontaminating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104153862B (en) | 2016-07-06 |
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