CN106894925A - A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise - Google Patents
A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise Download PDFInfo
- Publication number
- CN106894925A CN106894925A CN201710014890.5A CN201710014890A CN106894925A CN 106894925 A CN106894925 A CN 106894925A CN 201710014890 A CN201710014890 A CN 201710014890A CN 106894925 A CN106894925 A CN 106894925A
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- Prior art keywords
- cavity
- inner tube
- perforation
- silencer
- air inlet
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- 230000003584 silencer Effects 0.000 title claims abstract description 49
- 230000008676 import Effects 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 description 11
- 238000003379 elimination reaction Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000031872 Body Remains Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention provides a kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, including entrance point, muffler body and the port of export, there are at least three inner tubes in the muffler body, connected between each inner tube and separated with dividing plate, said inner tube extends along the lateral outlet side of import, cavity is formed with muffler body and dividing plate, in described to three inner tubes, positioned at middle inner tube, at least one inner tube and muffler body and dividing plate form the cavity of closing, and described are furnished with perforation in middle inner tube.The type silencer pressure loss is little, and small volume, and simple and compact for structure, manufacturing cost is not high, and the erasure effect of bandwidth, amplitude can be realized by the one-dimensional transfer matrix method design structure parameter of multi-cavity.
Description
Technical field
The present invention relates to silencer field, a kind of multi-cavity group for eliminating vehicle Charge air inlet broadband noise is specifically provided
Suitable hole silencer.
Background technology
Vehicle Turbocharged induction noise frequency distribution is very wide, and based on high frequency components, and for intake noise control,
Only by being taken measures in itself from noise source, its noise reduction is limited, and may influence whether that engine power, oil consumption etc. refer to
Mark, and for active noise controlling, the immature device of its technology is complicated and relatively costly, is not suitable for economical sedan-chair
Car.It is that induction noise is most economical and one of effective measures for control to install silencer to gas handling system.Traditional resistant noise-reducing device（Expand
Open silencer, Helmholtz silencer or 1/4 wavelength tube etc.）The noise of low and medium frequency can only be reduced, pressure charging system is not suitable for
Air inlet is wide, high-frequency noise problem, and punctured element is moved reciprocatingly by the air-flow in aperture in the case where acoustic pressure is acted on, and in air-flow and wears
Friction is produced between wall surface of the hole so that a part of acoustic energy is converted into the energy of other forms, such that it is able to effectively reduce noise.This
Outward, perforation structure has relatively low flowing pressure loss, helps to improve the hydrodynamic characteristics of silencer.At present, it is external
Solved using multi-cavity reactive muffler or dissipative muffler for more than orthodox car pressure charging system induction noise problem, and can taken
Obtain good result.Domestic vehicle Charge gas handling system typically using multiple helmholtz resonance chamber series connection or uses multi-cavity straight
It is logical to perforate silencer to control noise.Helmholtz silencer takes up room greatly, is not suitable for installing overall compact situation.It is many
The straight-through perforation acoustic wave filter structure in chamber is compact, and noise elimination amplitude is high, but its noise elimination frequency band is limited when chamber number is less；Interpolation perforated pipe knot
Structure can widen the frequency of noise elimination scope of straight-through perforated pipe, improve noise elimination amplitude, and the pressure loss is little.Additionally, silencer
Acoustic attenuation performance can be improved with the reduction of inner tube diameter.By rationally series connection perforation interpolation perforated pipe and straight-through perforated pipe, can
The characteristics of to combine different structure, and the caliber of cavity center section is reduced, the soundproof effect of broadband amplitude is realized, together
When ensure that the pressure loss is smaller and simple structure, manufacturing cost is relatively low.Designed multi-cavity combination perforation acoustic wave filter structure of the invention,
Limited muffler space can be made full use of to realize excellent acoustic attenuation performance, be highly suitable for vehicle Charge gas handling system wideband and made an uproar
Acoustic control.
The content of the invention
The technical problem to be solved in the present invention is to provide that a kind of anechoic frequency bandwidth, noise elimination amplitude be high, the pressure loss less and
The multi-cavity combination perforation silencer of compact conformation, superior acoustic attenuation performance is reached using less volume, is particularly suited for car
Broadband noise control high in compressed air induction system.
In order to solve the above technical problems, technical scheme is as follows：
A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, including entrance point, muffler body
And the port of export, there are at least three inner tubes in the muffler body, connected between each inner tube and separated with dividing plate, it is described interior
Pipe extends along the lateral outlet side of import, and cavity is formed with muffler body and dividing plate, in described to three inner tubes, positioned at centre
Inner tube, at least one inner tube forms the cavity of closing, and the cloth in middle inner tube with muffler body and dividing plate
There is perforation.
On the basis of above-mentioned technical proposal, at least three inner tube, except in middle formation closed cavity
Beyond pipe, other inner tubes form the cavity do not closed with muffler body and dividing plate, and entrance point is identical with port of export diameter.
On the basis of above-mentioned technical proposal, at least three inner tube, the diameter of inner pipe adjacent with entrance point with enter
Mouth end diameter is identical, and the inner tube positioned at the middle formation closed cavity diameter of inner pipe adjacent with its right side is identical and small
In entrance point diameter.
On the basis of above-mentioned technical proposal, the length of at least three inner tube is identical or different.
On the basis of above-mentioned technical proposal, perforation, and each inner perforated tube aperture are all furnished with least three inner tube
Identical, perforation porosity is identical or different, and porosity is less than 20%；
On the basis of above-mentioned technical proposal, at least three inner pipe walls thickness is identical with import and export end；
On the basis of above-mentioned technical proposal, perforation is all furnished with least three inner tube, the perforation distributions of each inner tube are uniform.
On the basis of above-mentioned technical proposal, the piercing aperture is 2-3.5mm.
The advantage of the invention is that：Acoustic wave filter structure is compact simple, and acoustic attenuation performance is superior, it is possible to achieve in the confined space
Reach superior soundproof effect.
Brief description of the drawings
Fig. 1 is the outside schematic diagram of three-cavity structure sample of the present invention；
Fig. 2 is the sectional interior view of three-cavity structure sample of the present invention；
Fig. 3 is the internal view of three-cavity structure sample of the present invention；
Fig. 4 is the transmission loss curve of three-cavity structure sample of the present invention；
Fig. 5 is that cavity length of the present invention influences than different on silencer acoustical behavior, and total length is 100mm；
Fig. 6 is that porosity of the present invention influences than different on silencer acoustical behavior, intermediate cavity porosity 10%；
Fig. 7 is that caliber influences than different on silencer acoustical behavior in cavity of the present invention, and left side cavity is 40mm.
Description of reference numerals：
1- entrance points；2- left side cavity inner tubes；3- left sides muffler body；4- dividing plates；5- intermediate cavity inner tubes；6- centre muffler masters
Body；7- right-side cavity inner tubes；8- right sides muffler body；The 9- ports of export, 10- perforation.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar original paper or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, including entrance point 1, silencer
Main body 3,6,8 and the port of export 9, there is at least three inner tubes 2,5,7 in the muffler body 3,6,8, each inner tube 2,5,7 it
Between series connection and separated with dividing plate 4, said inner tube 2,5,7 extends along the lateral outlet side of import, with muffler body 3,6,8 and dividing plate
4 form cavitys, in described to three inner tubes 2,5,7, positioned at middle inner tube 5, and at least one inner tube 5 and muffler body 6
With the cavity that dividing plate 4 forms closing, and described perforation 10 is furnished with middle inner tube 5.
On the basis of above-mentioned technical proposal, at least three inner tube 2,5,7, except positioned at middle formation closed cavity
Inner tube 5 beyond, other inner tubes 2,7 and muffler body 3,8 and dividing plate 4 form the cavity do not closed, entrance point 1 and the port of export
9 diameters are identical.
On the basis of above-mentioned technical proposal, at least three inner tube 2,5,7, the inner tube 2 adjacent with entrance point 1 is straight
Footpath is identical with the diameter of entrance point 1, the inner tube 5 positioned at middle formation closed cavity inner tube 7 diameter adjacent with its right side
It is identical, and less than the diameter of entrance point 1.
On the basis of above-mentioned technical proposal, the length of at least three inner tube 2,5,7 is identical or different.
On the basis of above-mentioned technical proposal, perforation 10 is all furnished with least three inner tube 2,5,7, and each inner tube 2,
5th, 7 piercing apertures are identical, and 10 porositys of perforation are identical or different, and porosity is less than 20%；
On the basis of above-mentioned technical proposal, the pipe thickness of at least three inner tube 2,5,7 is identical with import and export end 1,9；
On the basis of above-mentioned technical proposal, perforation 10 is all furnished with least three inner tube 2,5,7, each inner tube 2,5,7
Perforation 10 is evenly distributed.
On the basis of above-mentioned technical proposal, 10 apertures of the perforation are 2-3.5mm.
As Figure 1-3, sample of the present invention is applied to the three chambers combination perforation silencer of vehicle Charge gas handling system, comprising
Entrance point 1, left side cavity inner tube 2, left side muffler body 3, dividing plate 4, intermediate cavity inner tube 5, centre muffler main body 6, right side
Chamber inner tube 8, right side muffler body 9 and the port of export 10.Muffler inlet end is identical with port of export caliber, left side, centre and the right side
Side muffler body caliber is identical；Caliber is identical with entrance point caliber in left side cavity, intermediate cavity it is identical with caliber in right-side cavity and
Less than entrance point caliber；Left side cavity, intermediate cavity and right-side cavity inner tube wall thickness are identical with entrance end wall thickness；Each cavity inner perforated tube
It is evenly distributed, punched areas are of different sizes；Each cavity inner perforated tube aperture is identical, and porosity is identical or different, and piercing aperture is adjusted
Whole scope is 2mm-3.5mm, and porosity size is less than 20%.
The multi-cavity combination perforation silencer that sample of the present invention makes is straight by two unilateral interpolations perforation tubular constructions and one
The chamber combination silencer of logical perforated pipe structure composition three, can adjust according to the one-dimensional transfer matrix method of silencer target call combination multi-cavity
Whole dependency structure parameter, simple structure is with low cost, and soundproof effect is good and the pressure loss is small.
Embodiment 1：A kind of each ginseng of the multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise
Number is as shown in table 1：
The transmission loss of sample silencer as shown in figure 4, the frequency of noise elimination scope of sample silencer is substantially in 1300-3700Hz,
And noise elimination amplitude is higher（More than 20dB）.Total length is only 100mm, and external diameter is 80mm, and compact conformation is highly suitable for vehicle increasing
Pressure gas handling system.
Embodiment 2：A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, at other
Parameter constant, only changes each inner tube cavity length ratio, as shown in table 2：
Fig. 5 is the influence that each cavity length compares silencer acoustical behavior.Muffler body length remains 100mm, intermediate cavity
The porosity of body remains 10%, it can be seen that amplitude and crest frequency influence of the cavity length change on silencer transmission loss
It is very big, need that by rational matched design preferable silencer acoustic characteristic could be obtained in actual engineering design.
Embodiment 3：A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, at other
Parameter constant, only changes each inner perforated tube porosity ratio, as shown in table 3：
Fig. 6 is the influence that each inner perforated tube porosity compares silencer acoustical behavior.Muffler body length remains 100mm,
The porosity of middle chamber remains 10%, can see inner perforated tube porosity than change to silencer transmission loss amplitude and
Crest frequency influence is very big, needs that by rational matched design preferable silencer acoustics could be obtained in actual engineering design
Characteristic.
Embodiment 4：A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise, at other
Parameter constant, only changes each diameter of inner pipe ratio, as shown in table 4：
Fig. 7 is the influence that each inner tube diameter compares silencer acoustical behavior.Muffler body length remains 100mm, intermediate cavity
The porosity of body remains 10%, and inner tube diameter can be seen than changing amplitude and crest frequency influence on silencer transmission loss
It is very big, need that by rational matched design preferable silencer acoustic characteristic could be obtained in actual engineering design.
Muffler body of the present invention includes at least one straight-through perforated pipe knot using at least three-cavity structure, wherein intermediate cavity
Structure, left side cavity and right-side cavity are unilateral interpolation perforation tubular construction.Straight-through perforated pipe low frequency acoustic attenuation performance is good, and the pressure loss is small,
Interpolation perforation tubular construction can widen noise elimination frequency band and increase noise elimination amplitude, greatly improve high frequency acoustic attenuation performance, and pass through to have
Sequence connects these three structures the characteristics of can combine each structure, and causes the reduction of silencer cavity center section part point inner tube diameter,
Further improve acoustic attenuation performance, final design goes out that anechoic frequency bandwidth, noise elimination amplitude be big, the pressure loss is small and compact conformation noise elimination
Device.When noise problem is more serious, can rationally increase the number of middle chamber, reach bigger sound deadening capacity.By wearing
Without packing material in each cavity that hole pipe is separate, each cavity internal layer perforated pipe and outer layer perforation thickness of pipe wall, aperture, hole
Rate, punched areas and cavity size can be matched by the one-dimensional transfer-matrix method reasonable computation of multi-cavity, and realization preferably disappears
Acoustic target.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Claims (8)
1. a kind of multi-cavity for eliminating vehicle Charge air inlet broadband noise combines perforation silencer, including entrance point, silencer master
Body and the port of export, it is characterised in that have at least three inner tubes in the muffler body, between each inner tube series connection and with every
Plate separates, and said inner tube extends along the lateral outlet side of import, and cavity, described to three inner tubes are formed with muffler body and dividing plate
In, positioned at middle inner tube, at least one inner tube forms the cavity of closing with muffler body and dividing plate, and described is located at
Between inner tube on be furnished with perforation.
2. a kind of multi-cavity for eliminating vehicle Charge air inlet broadband noise according to claim 1 combines perforation silencer,
Characterized in that, at least three inner tube, in addition to the inner tube positioned at middle formation closed cavity, other inner tubes and noise reduction
Device main body and dividing plate form the cavity do not closed, and entrance point is identical with port of export diameter.
3. a kind of multi-cavity for eliminating vehicle Charge air inlet broadband noise according to claim 1 combines perforation silencer,
Characterized in that, at least three inner tube, the diameter of inner pipe adjacent with entrance point is identical with entrance point diameter, described to be located at
The diameter of inner pipe that the inner tube of middle formation closed cavity is adjacent with its right side is identical, and less than entrance point diameter.
4. perforation is combined according to a kind of any described multi-cavity for eliminating vehicle Charge air inlet broadband noise of claims 1 to 3
Silencer, it is characterised in that the length of at least three inner tube is identical or different.
5. perforation is combined according to a kind of any described multi-cavity for eliminating vehicle Charge air inlet broadband noise of claims 1 to 3
Silencer, it is characterised in that perforation is all furnished with least three inner tube, and each inner perforated tube aperture is identical, hole of perforating
Rate is identical or different, and porosity is less than 20%.
6. perforation is combined according to a kind of any described multi-cavity for eliminating vehicle Charge air inlet broadband noise of claims 1 to 3
Silencer, it is characterised in that at least three inner pipe walls thickness is identical with import and export end.
7. a kind of multi-cavity for eliminating vehicle Charge air inlet broadband noise according to claim 5 combines perforation silencer,
Characterized in that, being all furnished with perforation at least three inner tube, the perforation distributions of each inner tube are uniform.
8. a kind of multi-cavity for eliminating vehicle Charge air inlet broadband noise according to claim 5 combines perforation silencer,
Characterized in that, the piercing aperture is 2-3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014890.5A CN106894925A (en) | 2017-01-10 | 2017-01-10 | A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014890.5A CN106894925A (en) | 2017-01-10 | 2017-01-10 | A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise |
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| Publication Number | Publication Date |
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| CN106894925A true CN106894925A (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710014890.5A Pending CN106894925A (en) | 2017-01-10 | 2017-01-10 | A kind of multi-cavity combination perforation silencer for eliminating vehicle Charge air inlet broadband noise |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107541A (en) * | 2019-05-20 | 2019-08-09 | 安徽江淮汽车集团股份有限公司 | Press rear muffler and engine with supercharger |
| CN115111456A (en) * | 2022-06-29 | 2022-09-27 | 国网陕西省电力有限公司电力科学研究院 | Modular, combinable and broadband pipeline silencer design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208429A (en) * | 1991-07-26 | 1993-05-04 | Carrier Corporation | Combination muffler and check valve for a screw compressor |
| CN2151258Y (en) * | 1993-02-12 | 1993-12-29 | 李春财 | Energy-saving silencer |
| CN201982158U (en) * | 2011-03-16 | 2011-09-21 | 奇瑞汽车股份有限公司 | Car exhaust muffler |
| CN205422881U (en) * | 2016-02-02 | 2016-08-03 | 厦门厦工机械股份有限公司 | Resonant silencer |
| CN106089362A (en) * | 2016-07-28 | 2016-11-09 | 东南大学 | A kind of internal combustion engine exhaust silencer |
| CN106121774A (en) * | 2016-07-25 | 2016-11-16 | 南京航空航天大学 | A kind of low noise combined type multi-cavity exhaust silencer |
-
2017
- 2017-01-10 CN CN201710014890.5A patent/CN106894925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208429A (en) * | 1991-07-26 | 1993-05-04 | Carrier Corporation | Combination muffler and check valve for a screw compressor |
| CN2151258Y (en) * | 1993-02-12 | 1993-12-29 | 李春财 | Energy-saving silencer |
| CN201982158U (en) * | 2011-03-16 | 2011-09-21 | 奇瑞汽车股份有限公司 | Car exhaust muffler |
| CN205422881U (en) * | 2016-02-02 | 2016-08-03 | 厦门厦工机械股份有限公司 | Resonant silencer |
| CN106121774A (en) * | 2016-07-25 | 2016-11-16 | 南京航空航天大学 | A kind of low noise combined type multi-cavity exhaust silencer |
| CN106089362A (en) * | 2016-07-28 | 2016-11-09 | 东南大学 | A kind of internal combustion engine exhaust silencer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107541A (en) * | 2019-05-20 | 2019-08-09 | 安徽江淮汽车集团股份有限公司 | Press rear muffler and engine with supercharger |
| CN115111456A (en) * | 2022-06-29 | 2022-09-27 | 国网陕西省电力有限公司电力科学研究院 | Modular, combinable and broadband pipeline silencer design method |
| CN115111456B (en) * | 2022-06-29 | 2023-06-27 | 国网陕西省电力有限公司电力科学研究院 | Modularized, combinable and broadband pipeline muffler design method |
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Application publication date: 20170627 |
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