CN205805669U - A kind of gasoline engine deafener - Google Patents
A kind of gasoline engine deafener Download PDFInfo
- Publication number
- CN205805669U CN205805669U CN201620775660.1U CN201620775660U CN205805669U CN 205805669 U CN205805669 U CN 205805669U CN 201620775660 U CN201620775660 U CN 201620775660U CN 205805669 U CN205805669 U CN 205805669U
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- CN
- China
- Prior art keywords
- air inlet
- noise reduction
- inner tube
- dividing plate
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of gasoline engine deafener, include prime noise reduction cylinder and rear class noise reduction cylinder, left end at prime noise reduction cylinder connects air inlet steel pipe, it is respectively arranged at two ends with outlet tail piece at rear class noise reduction cylinder, it is provided with air inlet pipe at the middle part of rear class noise reduction cylinder, the right-hand member of prime noise reduction cylinder is connected with described air inlet pipe by intermediate connection tube, it is provided with two dividing plates in prime noise reduction inner barrel, prime hush pipe intracoelomic cavity is divided into chamber one by two dividing plates, chamber two and chamber three, it is additionally provided with air inlet inner tube in prime noise reduction inner barrel, air inlet inner tube sequentially passes through two dividing plates, the left and right end of air inlet inner tube connects described air inlet steel pipe and the left end of intermediate connection tube respectively.This utility model have employed twin-stage impedance complex formula muffler structure, can have employed double air outlet structure simultaneously for different frequency range noise reduction respectively, can effectively reduce pressure at expulsion, it is ensured that the power of internal combustion engine, the most sturdy and durable, is hardly damaged.
Description
Technical field
This utility model relates to gasoline engine noise reduction technical field, particularly relates to a kind of gasoline engine deafener.
Background technology
Along with country's raising day by day to the automobile noise control, people's lifting day by day to quality of the life, automobile is to aerofluxus
The requirement of noise is also more and more higher.And using suitable deafener is to reduce effective hands that car combustion engine burning causes
Section.
Utility model content
This utility model purpose is contemplated to make up the defect of prior art, it is provided that a kind of gasoline engine deafener.
This utility model is achieved through the following technical solutions:
A kind of gasoline engine deafener, includes prime noise reduction cylinder and rear class noise reduction cylinder, at prime noise reduction cylinder
Left end connect and have air inlet steel pipe, be respectively arranged at two ends with outlet tail piece, in rear class noise reduction cylinder at rear class noise reduction cylinder
Portion is provided with air inlet pipe, and the right-hand member of prime noise reduction cylinder is connected with described air inlet pipe, at prime hush pipe by intermediate connection tube
Internal portion is provided with two dividing plates, and prime hush pipe intracoelomic cavity is divided into chamber one, chamber two and chamber three, front by two dividing plates
Level noise reduction inner barrel is additionally provided with air inlet inner tube, and air inlet inner tube sequentially passes through two dividing plates, and the left and right end of air inlet inner tube connects respectively
Connecing described air inlet steel pipe and the left end of intermediate connection tube, described air inlet inner tube be positioned at chamber one one section is provided with bypass
Pipe, air inlet inner tube is positioned on one section of chamber three and has multiple aperture；Rear class noise reduction inner barrel the most successively between
Every be provided with dividing plate one, dividing plate two, dividing plate three, dividing plate four and dividing plate five, five dividing plates by rear class hush pipe intracoelomic cavity from a left side to
The right side is divided into resonant chamber three, expansion chambers three, expansion chambers one, expansion chambers two, resonant chamber one and resonant chamber two, described air inlet successively
Pipe connects with expansion chambers one, is provided with air-flow guide housing in expansion chambers one, and air-flow guide housing covers the end of air inlet pipe, in resonance
Room three is internal is provided with resistive sound absorbing element, is additionally provided with porous inner tube and inner tube with holes, described porous in rear class hush pipe body
Inner tube sequentially passes through dividing plate one and dividing plate two, and the left and right end of porous inner tube lays respectively at resonant chamber three and expansion chambers one is internal, and
Left end connect on the left of outlet tail piece, porous inner tube be positioned at resonant chamber three one section has multiple aperture, and porous inner tube is positioned at
One section of expansion chambers three is provided with quarter-wave long tube one, and described inner tube with holes passes dividing plate four and dividing plate five, with holes interior
The left and right end of pipe lays respectively at expansion chambers two and resonant chamber two is internal, and the outlet tail piece on the right side of right-hand member connection, inner tube position with holes
Having multiple aperture in resonant chamber two one section, one section that is positioned at resonant chamber one is provided with quarter-wave long tube two,
Being provided with tuner on dividing plate four, it is internal that tuner half is positioned at expansion chambers two, and it is internal that second half is positioned at resonant chamber one.
Described two dividing plate centers in prime hush pipe body have the centre bore passed for air inlet inner tube, at centre bore
Upper and lower side have mounting hole.
Described air-flow guide housing is half arc surface type structure.
Described dividing plate one, dividing plate two, dividing plate three, dividing plate four and dividing plate five have multiple aperture.
It is equipped with suspension suspension hook at the two ends of air inlet steel pipe, intermediate connection tube and rear class noise reduction cylinder.
The utility model has the advantages that: this utility model is exclusively used in a gasoline engine, empty at less vehicle bottom
In realize the good effect reducing noise, have employed twin-stage impedance complex formula muffler structure, can divide for different frequency range
Other noise reduction, have employed double air outlet structure simultaneously, can effectively reduce pressure at expulsion, it is ensured that the power of internal combustion engine, the most also wants heavily fortified point
Gu durable, it is hardly damaged, is suitable for the bottom working environment that vehicle chassis is severe.
Accompanying drawing explanation
Fig. 1 is external structure schematic diagram of the present utility model.
Fig. 2 is prime noise reduction inner barrel structure chart.
Fig. 3 is the structure chart of dividing plate in prime hush pipe body.
Fig. 4 is rear class noise reduction inner barrel structure chart.
Fig. 5 is the structure chart of five dividing plates in rear class hush pipe body.
Detailed description of the invention
As shown in Fig. 1,2,4, a kind of gasoline engine deafener, include prime noise reduction cylinder 1 and rear class noise reduction cylinder
2, the left end at prime noise reduction cylinder 1 connects air inlet steel pipe 3, is respectively arranged at two ends with outlet tail piece at rear class noise reduction cylinder 2
4, air inlet pipe 5 it is provided with at the middle part of rear class noise reduction cylinder 2, the right-hand member of prime noise reduction cylinder 1 passes through intermediate connection tube 6 with described
Air inlet pipe 5 connects, and is provided with two dividing plates 7 inside prime noise reduction cylinder 1, and two dividing plates 7 are by prime noise reduction cylinder 1 lumen segmentation
Becoming chamber 1, chamber 29 and chamber 3 10, be additionally provided with air inlet inner tube 11 inside prime noise reduction cylinder 1, air inlet inner tube 11 depends on
Secondary passing two dividing plates 7, the left and right end of air inlet inner tube 11 connects described air inlet steel pipe 3 and the left end of intermediate connection tube 6 respectively,
Described air inlet inner tube 11 be positioned at chamber 1 one section is provided with bypass pipe 12, and air inlet inner tube 11 is positioned at chamber 3 10
Multiple aperture is had on one section；Be spaced the most successively inside rear class noise reduction cylinder 2 is provided with dividing plate 1, dividing plate two
14, dividing plate 3 15, dividing plate 4 16 and dividing plate 5 17, rear class noise reduction cylinder 2 inner chamber is divided into by five dividing plates the most successively
Resonant chamber 3 18, expansion chambers 3 19, expansion chambers 1, expansion chambers 2 21, resonant chamber 1 and resonant chamber 2 23, described air inlet
Pipe 5 connects with expansion chambers 1, is provided with air-flow guide housing 24 in expansion chambers 1, and air-flow guide housing 24 covers air inlet pipe 5
End, is provided with resistive sound absorbing element 25 inside resonant chamber 3 18, is additionally provided with porous inner tube 26 and band in rear class noise reduction cylinder 2
Hole inner tube 27, described porous inner tube 26 sequentially passes through dividing plate 1 and dividing plate 2 14, the left and right end of porous inner tube 26 position respectively
Internal in resonant chamber 3 18 and expansion chambers 1, and the outlet tail piece 4 on the left of left end connection, porous inner tube 26 is positioned at resonant chamber three
In 18 one section has multiple aperture, and porous inner tube 26 be positioned at expansion chambers 3 19 one section is provided with quarter-wave long tube one
28, described inner tube with holes 27 is through dividing plate 4 16 and dividing plate 5 17, and the left and right end of inner tube 27 with holes lays respectively at expansion chambers two
21 and resonant chamber 2 23 internal, and right-hand member connect on the right side of outlet tail piece 4, inner tube 27 with holes is positioned at a section of resonant chamber 2 23
On have multiple aperture, one section that is positioned at resonant chamber 1 is provided with quarter-wave long tube 2 29, on dividing plate 4 16 pacify
Equipped with tuner 30, it is internal that tuner 30 half is positioned at expansion chambers 2 21, and it is internal that second half is positioned at resonant chamber 1.
Air inlet inner tube 11 is supplied to pass as it is shown on figure 3, two dividing plate 7 centers in described prime noise reduction cylinder 1 have
Centre bore 31, the upper and lower side at centre bore 31 has mounting hole 32.
Described air-flow guide housing 24 is half arc surface type structure.
As it is shown in figure 5, have on described dividing plate 1, dividing plate 2 14, dividing plate 3 15, dividing plate 4 16 and dividing plate 5 17
Multiple apertures.
Suspension suspension hook 33 it is equipped with at the two ends of air inlet steel pipe 3, intermediate connection tube 6 and rear class noise reduction cylinder 2.
This gasoline engine deafener is designed as twin-stage noise eliminating device structure, and prime is resistant noise-reducing device, and rear class is that impedance is multiple
Box-like deafener, can reduce the noise of basic, normal, high different frequency range respectively.And have employed double air outlet structure, can effectively reduce row
Atmospheric pressure, it is ensured that engine power.
Diameter of steel tube is designed as Φ 54mm, and without the bending of racing, and uses the structure of double-exhaust, is reducing internal combustion
While machine waste gas flowing velocity, it also avoid exhaust resistance big, affect the situation of engine output.
And, the space less for adapting to vehicle bottom, increase the road clearance, ensure have sufficiently large volume, volume simultaneously
Bigger rear class deafener barrel designs becomes flat structure.
Prime noise reduction cylinder noise reduction process:
Engine exhaust gas enters prime noise reduction cylinder 1 by air inlet inner tube 11, and enters chamber, by former by bypass pipe 12
The pipeline come dilates suddenly a bigger chamber, and the acoustic impedance in passage can be undergone mutation, and makes the sound wave of some frequency lead to
But acoustic filter, and it is reflected back sound source, thus effectively reduce low-frequency noise；
Owing to dividing plate 7 two ends have macropore, air-flow just flows into chamber from chamber, again expands, and reduces a part and makes an uproar
Sound；
Owing to air inlet inner tube 11 end has many apertures, air-flow understands some air-flow by little during flowing
Hole enters chamber, produces vibrations, and when airstream vibration, by aperture, makes the gas in closing chamber also cause vibration, in aperture
Gas (gas column) vibrate the most simultaneously, and when the frequency of vibration in air-flow with close chamber natural frequency identical time, resonate,
Thus reduce noise；
Last air-flow flows out prime muffler chamber, flows backward along intermediate connection tube.
Rear class noise reduction cylinder noise reduction process:
Combustion in IC engine waste gas, by after prime noise reduction cylinder 1, is continued flowing along intermediate connection tube, is entered by air inlet pipe
Enter the expansion chambers of rear class noise reduction cylinder 2.
In the process, owing to air-flow guide housing 24 is half arc surface type structure, gas flow rates can be reduced, thus drop
Low gas hydrodynamic noise, and air-flow is dilated suddenly a bigger chamber by original pipeline, the acoustic impedance meeting in passage
Undergo mutation, make the sound wave of some frequency can't pass acoustic filter, and be reflected back sound source, thus effectively reduce low-frequency noise；
Then, due to five dividing plates and on have a large amount of aperture, air-flow can flow from about expansion chambers respectively item.
Dextrad: a part of air-flow enters expansion chambers 2 21 from expansion chambers 1, again expands, reduces a part and makes an uproar
Sound.
The most a part of air-flow enters resonant chamber 1 by tuner 30, produces vibrations, and when airstream vibration, passes through
Tuner 30, makes the gas in closing chamber also cause vibration, and the gas (gas column) of tuner 30 vibrates the most simultaneously, and when in air-flow
Frequency of vibration identical with the natural frequency closing chamber time, resonate, sound energy consumption, thus reduce noise；
And another part air-flow enter inner tube 27 with holes flow backward, due in inner tube 27 with holes equipped with quarter-wave
Pipe 29, can eliminate the high-frequency noise of quarter-wave long tube four times, then air flow direction resonant chamber 2 23, due to inner tube end
Have many apertures, understand some air-flow and enter chamber by aperture, produce vibrations, and when airstream vibration, by aperture,
Making the gas in closing chamber also cause vibration, the gas (gas column) in aperture vibrates the most simultaneously, and when the frequency of vibration in air-flow
Time identical with the natural frequency closing chamber, resonate, consume a large amount of acoustic energy, thus reduce noise；
Remainder air-flow is discharged along inner tube by tailpipe.
Left-hand: a part of air-flow enters expansion chambers 3 19 from expansion chambers 1, again expands, reduces a part and makes an uproar
Sound；Another part air-flow enters porous inner tube 26, reduces by 1/4th by the quarter-wave long tube 28 on porous inner tube 26
The noise of wavelength tube 28 four times of wavelength of length；Flow to the left followed by along inner tube, and inner tube end also has a large amount of aperture, have
A part of air-flow enters resonant chamber 3 18 by aperture, resonates, consumes a part of low-frequency noise；
Simultaneously as resonant chamber 3 18 is filled with a large amount of resistive sound absorbing element glass fibre, enter resonance at air-flow
During room 3 18, due to sound wave damping vibration, make acoustic energy transform into frictional heat energy, thus reduce high-frequency noises.
Finally, air-flow is got rid of along porous inner tube 26 by tailpipe.
Sum up: through repeatedly the dilating of the double deafener of front stage, resonate, the effect such as friction, significantly reduce this vapour
Basic, normal, high each frequency noise of oil internal combustion engine；And rear class acoustic filter uses double air outlet structure, can effectively reduce aerofluxus resistance
Power, it is ensured that internal combustion engine effective power, rear class deafener is designed as flat horizontal structure simultaneously, it is ensured that also improve while volume
Road clearance of car load.
Claims (5)
1. a gasoline engine deafener, it is characterised in that: include prime noise reduction cylinder and rear class noise reduction cylinder, in prime
The left end of noise reduction cylinder connects air inlet steel pipe, is respectively arranged at two ends with outlet tail piece, in rear class noise reduction at rear class noise reduction cylinder
The middle part of cylinder is provided with air inlet pipe, and the right-hand member of prime noise reduction cylinder is connected with described air inlet pipe, front by intermediate connection tube
Level noise reduction inner barrel is provided with two dividing plates, and prime hush pipe intracoelomic cavity is divided into chamber one, chamber two and chamber by two dividing plates
Room three, is additionally provided with air inlet inner tube in prime noise reduction inner barrel, and air inlet inner tube sequentially passes through two dividing plates, the left and right of air inlet inner tube
End connects described air inlet steel pipe and the left end of intermediate connection tube respectively, and described air inlet inner tube is positioned on one section of chamber one
Being provided with bypass pipe, air inlet inner tube is positioned on one section of chamber three and has multiple aperture；Rear class noise reduction inner barrel from a left side to
What the right side was spaced successively is provided with dividing plate one, dividing plate two, dividing plate three, dividing plate four and dividing plate five, and five dividing plates are by rear class hush pipe body
Chamber is divided into resonant chamber three, expansion chambers three, expansion chambers one, expansion chambers two, resonant chamber one and resonant chamber two, institute the most successively
The air inlet pipe stated connects with expansion chambers one, is provided with air-flow guide housing in expansion chambers one, and air-flow guide housing covers the end of air inlet pipe
Portion, is provided with resistive sound absorbing element inside resonant chamber three, is additionally provided with porous inner tube and inner tube with holes, institute in rear class hush pipe body
The porous inner tube stated sequentially passes through dividing plate one and dividing plate two, and the left and right end of porous inner tube lays respectively at resonant chamber three and expansion chambers one
Inside, and left end connect on the left of outlet tail piece, porous inner tube be positioned at resonant chamber three one section has multiple aperture, in porous
Pipe be positioned at expansion chambers three one section is provided with quarter-wave long tube one, and described inner tube with holes passes dividing plate four and dividing plate five,
The left and right end of inner tube with holes lays respectively at expansion chambers two and resonant chamber two is internal, and the outlet tail piece on the right side of right-hand member connection, with holes
Inner tube is positioned on one section of resonant chamber two and has multiple aperture, and one section that is positioned at resonant chamber one is provided with quarter-wave
Pipe two, is provided with tuner on dividing plate four, and it is internal that tuner half is positioned at expansion chambers two, and second half is positioned at resonant chamber one
Portion.
A kind of gasoline engine deafener the most according to claim 1, it is characterised in that: in described prime hush pipe body
Two dividing plate centers have the centre bore passed for air inlet inner tube, the upper and lower side at centre bore has mounting hole.
A kind of gasoline engine deafener the most according to claim 1, it is characterised in that: described air-flow guide housing is half
Arc surface type structure.
A kind of gasoline engine deafener the most according to claim 1, it is characterised in that: at described dividing plate one, dividing plate
Two, multiple aperture is had on dividing plate three, dividing plate four and dividing plate five.
A kind of gasoline engine deafener the most according to claim 1, it is characterised in that: in air inlet steel pipe, middle connection
The two ends of pipe and rear class noise reduction cylinder are equipped with suspension suspension hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620775660.1U CN205805669U (en) | 2016-07-22 | 2016-07-22 | A kind of gasoline engine deafener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620775660.1U CN205805669U (en) | 2016-07-22 | 2016-07-22 | A kind of gasoline engine deafener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805669U true CN205805669U (en) | 2016-12-14 |
Family
ID=57509299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620775660.1U Expired - Fee Related CN205805669U (en) | 2016-07-22 | 2016-07-22 | A kind of gasoline engine deafener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205805669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089385A (en) * | 2016-07-22 | 2016-11-09 | 合肥汇凌汽车零部件有限公司 | A kind of gasoline engine deafener |
| WO2020248568A1 (en) * | 2019-06-13 | 2020-12-17 | 赛格威科技有限公司 | Exhaust device and vehicle |
-
2016
- 2016-07-22 CN CN201620775660.1U patent/CN205805669U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089385A (en) * | 2016-07-22 | 2016-11-09 | 合肥汇凌汽车零部件有限公司 | A kind of gasoline engine deafener |
| WO2020248568A1 (en) * | 2019-06-13 | 2020-12-17 | 赛格威科技有限公司 | Exhaust device and vehicle |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20200722 |