CN205805654U - A kind of diesel engine deafener - Google Patents
A kind of diesel engine deafener Download PDFInfo
- Publication number
- CN205805654U CN205805654U CN201620775798.1U CN201620775798U CN205805654U CN 205805654 U CN205805654 U CN 205805654U CN 201620775798 U CN201620775798 U CN 201620775798U CN 205805654 U CN205805654 U CN 205805654U
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- CN
- China
- Prior art keywords
- noise reduction
- inner tube
- reduction cylinder
- steel pipe
- rear class
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of diesel engine deafener, include prime noise reduction cylinder and rear class noise reduction cylinder, before and after prime noise reduction cylinder, end is respectively equipped with air inlet steel pipe one and steel pipe of giving vent to anger, before and after rear class noise reduction cylinder, end is respectively equipped with outlet tail piece, the stack shell of rear class noise reduction cylinder is provided with air inlet steel pipe two, described steel pipe of giving vent to anger is connected with air inlet steel pipe two, engine exhaust gas is after prime noise reduction cylinder noise reduction, enter rear class noise reduction cylinder noise reduction, finally go out from outlet tail piece.This utility model is exclusively used in a diesel engine, the good effect reducing noise is realized in less vehicle bottom space, have employed twin-stage impedance complex formula muffler structure, double air outlet structure can be have employed simultaneously for different frequency range noise reduction respectively, can effectively reduce pressure at expulsion, guarantee the power of internal combustion engine, the most sturdy and durable, it is hardly damaged, is suitable for the bottom working environment that vehicle chassis is severe.
Description
Technical field
This utility model relates to diesel engine noise reduction technical field, particularly relates to a kind of diesel 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 diesel engine deafener.
This utility model is achieved through the following technical solutions:
A kind of diesel engine deafener, includes prime noise reduction cylinder and rear class noise reduction cylinder, at prime noise reduction cylinder
Before and after end be respectively equipped with air inlet steel pipe one and steel pipe of giving vent to anger, before and after rear class noise reduction cylinder, end is respectively equipped with outlet tail piece,
Being provided with air inlet steel pipe two on the stack shell of rear class noise reduction cylinder, described steel pipe of giving vent to anger is connected with air inlet steel pipe two, and internal combustion engine gives up
Gas, after prime noise reduction cylinder noise reduction, enters rear class noise reduction cylinder noise reduction, finally goes out from outlet tail piece.
It is provided with left clapboard and right clapboard, left clapboard and right clapboard by prime noise reduction in the inside of described prime noise reduction cylinder
Cylinder lumen is divided into left resonant chamber, expansion chambers and right resonant chamber, is respectively equipped with left porous in left resonant chamber and right resonant chamber
Inner tube and right porous inner tube, all have multiple aperture on left porous inner tube and right porous inner tube, and the left end of left porous inner tube is even
Tapping into gas steel pipe one, the right-hand member of left porous inner tube is fixed on left clapboard and extend in expansion chambers, the left end of right porous inner tube
Being fixed on right clapboard and extend in expansion chambers, the right-hand member of right porous inner tube connects steel pipe of giving vent to anger.
It is provided with dividing plate one, dividing plate two, dividing plate three and dividing plate what described rear class noise reduction inner barrel was from left to right spaced
Four, dividing plate three and dividing plate four all have multiple aperture, rear class hush pipe intracoelomic cavity is from left to right divided into expansion by four dividing plates
Open room three, resonant chamber two, resonant chamber one, expansion chambers one and expansion chambers two, in resonant chamber two, be provided with resistive sound absorbing element, rear
Level noise reduction inner barrel further respectively has upside inner tube and downside inner tube, upside inner tube and downside inner tube sequentially pass through four dividing plates
And left and right end lays respectively in expansion chambers three and expansion chambers two, the outlet tail piece on the left of the left end connection of upside inner tube, in downside
Outlet tail piece on the right side of the right-hand member connection of pipe, upside inner tube is positioned on the segment section of resonant chamber one and has multiple aperture, downside
Inner tube is positioned on the segment section of resonant chamber two and has multiple aperture, and it is internal also that described air inlet steel pipe two extend into expansion chambers one
Connect air inlet inner tube, in resonant chamber two, be additionally provided with porous inner tube, porous inner tube has multiple aperture, the left and right of porous inner tube
End is respectively protruding in expansion chambers three and resonant chamber one.
Connect between described dividing plate one, dividing plate two, dividing plate three and dividing plate four and have support bar.
The cross section of described prime noise reduction cylinder is trapezoidal, and rear class noise reduction cylinder is flat structure.For adapting at the bottom of vehicle
The space that portion is less, increases the road clearance, ensures have sufficiently large volume and intensity simultaneously, and it is ladder that prime deafener is designed as cross section
Shape, rear class deafener barrel designs becomes flat structure.
Shown resistive sound absorbing element is glass fibre.
This diesel 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.
Prime noise reduction workflow: engine exhaust gas enters expansion chambers by left porous inner tube, and air-flow is by original pipeline
Suddenly dilating a bigger chamber, the acoustic impedance in passage can be undergone mutation, and makes the sound wave of some frequency can't pass noise elimination
Device, and it is reflected back sound source, thus effectively reduce low-frequency noise；
And, during entering expansion chambers, owing to having more aperture on left porous inner tube, air-flow is in the process of flowing
Some air-flow of middle meeting enters chamber by aperture, produces vibrations, and when airstream vibration, by aperture, makes in closing chamber
Gas also cause vibration, the gas (gas column) in aperture vibrates the most simultaneously, and when the frequency of vibration in air-flow with close chamber
When natural frequency is identical, resonate, consume a large amount of acoustic energy, thus reduce noise；
Then, air-flow enters the porous inner tube right side from expansion chambers.In the process, owing to also having many on right porous inner tube
Aperture, air-flow can enter resonant chamber by aperture, again resonate, reduce noise.
Finally, air-flow flows out prime muffler chamber, and along giving vent to anger, steel pipe flows backward.
The utility model has the advantages that: this utility model is exclusively used in a diesel 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 firmest
Durable, it is hardly damaged, is suitable for the bottom working environment that vehicle chassis is severe.
Accompanying drawing explanation
Fig. 1 is this utility model prime hush pipe external body structure chart.
Fig. 2 is this utility model rear class hush pipe external body structure chart.
Fig. 3 is this utility model prime noise reduction inner barrel axonometric chart.
Fig. 4 is this utility model prime hush pipe body internal plane.
Fig. 5 is this utility model rear class noise reduction inner barrel axonometric chart.
Fig. 6 is this utility model rear class hush pipe body internal plane.
Detailed description of the invention
As shown in Figure 1, 2, a kind of diesel engine deafener, include prime noise reduction cylinder 2 and rear class noise reduction cylinder 5,
Before and after prime noise reduction cylinder 2, end is respectively equipped with air inlet steel pipe 1 and steel pipe 3 of giving vent to anger, and holds before and after rear class noise reduction cylinder 5
Be respectively equipped with outlet tail piece 4 and 6, the stack shell of rear class noise reduction cylinder 5 be provided with air inlet steel pipe 27, described give vent to anger steel pipe 3 with
Air inlet steel pipe 27 connects, and engine exhaust gas, after prime noise reduction cylinder 2 noise reduction, enters rear class noise reduction cylinder 5 noise reduction, finally
Go out from outlet tail piece 3.
As shown in Figure 3,4, it is provided with left clapboard 9 and right clapboard 10, left clapboard 9 in the inside of described prime noise reduction cylinder 2
With right clapboard 10, prime noise reduction cylinder 2 lumen segmentation is become left resonant chamber 23, expansion chambers 24 and right resonant chamber 25, at left resonant chamber
23 and right resonant chamber 25 in be respectively equipped with left porous inner tube 8 and right porous inner tube 11, at left porous inner tube 8 and right porous inner tube 11
On all have multiple aperture, the left end of left porous inner tube 8 connects air inlet steel pipe 1, the right-hand member of left porous inner tube 8 be fixed on left every
On plate 9 and extend in expansion chambers 24, the left end of right porous inner tube 11 is fixed on right clapboard 10 and extend in expansion chambers 24,
The right-hand member of right porous inner tube 11 connects steel pipe 3 of giving vent to anger.
As shown in Figure 5,6, be from left to right spaced inside described rear class noise reduction cylinder 5 is provided with dividing plate 1, dividing plate
2 16, dividing plate 3 17 and dividing plate 4 18, four dividing plates rear class noise reduction cylinder 5 inner chamber is from left to right divided into expansion chambers 3 26,
Resonant chamber 2 27, resonant chamber 1, expansion chambers 1 and expansion chambers 2 30, be provided with resistive sound absorbing element in resonant chamber 2 27
19, inside rear class noise reduction cylinder 5, further respectively have upside inner tube 13 and downside inner tube 20, upside inner tube 13 and downside inner tube 20
Sequentially passing through four dividing plates and left and right end lays respectively in expansion chambers 3 26 and expansion chambers 2 30, the left end of upside inner tube 13 connects
The outlet tail piece 4 in left side, the outlet tail piece 6 on the right side of the right-hand member connection of downside inner tube 20, upside inner tube 13 is positioned at resonant chamber 1
Having multiple aperture on interior segment section, downside inner tube 20 is positioned on the segment section of resonant chamber 2 27 and has multiple aperture, institute
The air inlet steel pipe 27 stated extend into expansion chambers 1 inside and connects air inlet inner tube 21, is additionally provided with porous in resonant chamber 2 27
Inner tube 22, porous inner tube 22 has multiple aperture, and the left and right end of porous inner tube 22 is respectively protruding into expansion chambers 3 26 and resonant chamber
In one 28.
Connect between described dividing plate 1, dividing plate 2 16, dividing plate 3 17 and dividing plate 4 18 and have support bar 15.
The cross section of described prime noise reduction cylinder 2 is trapezoidal, and rear class noise reduction cylinder 5 is flat structure.
Shown resistive sound absorbing element 19 is glass fibre.
Work process: combustion in IC engine waste gas, by after prime deafener cylinder, continues flowing along intermediate connection tube, logical
Cross air inlet inner tube 21 and enter the expansion chambers 1 of rear class deafener cylinder 5.
In the process, 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, owing to having a large amount of aperture on dividing plate 3 17 and 4 18, air-flow can flow to expansion chambers 1 left and right directions.
Dextrad: a part of air-flow enters expansion chambers 2 30 from expansion chambers 1, again expands, reduces a part and makes an uproar
Sound.
Then air-flow enter on the upside of inner tube 13, flow along upside inner tube 13 to doing；When flowing to resonant chamber 1, due to upper
Side inner tube 13 has many apertures changing on chamber portion body, understand some air-flow and enter resonant chamber 1 by aperture,
Produce vibrations, and when airstream vibration, by aperture, make the gas in closing chamber also cause vibration, the gas (gas in aperture
Post) vibrate the most simultaneously, and when the frequency of vibration in air-flow is identical with the natural frequency closing chamber, resonate, consume a large amount of
Acoustic energy, thus reduce noise；
Finally, air-flow can continue to flow to the left along upside inner tube 13, gets rid of rear class noise reduction finally by outlet tail piece 4
Device.
Left-hand: a part of air-flow enters resonant chamber 2 27 from expansion chambers 1, again expands, reduces a part and makes an uproar
Sound；Then, air-flow entrance porous inner tube 22 flows, to the left owing to having a large amount of aperture on porous inner tube 22, so having part
Air-flow enters resonant chamber 2 27 by aperture, resonates, sound energy consumption, reduces noise.
Simultaneously as resonant chamber 2 27 is filled with a large amount of resistive sound absorbing element 19 glass fibre, enter altogether at air-flow
Shake room 2 27 time, due to sound wave damping vibration, make acoustic energy transform into frictional heat energy, thus reduce high-frequency noises.
Followed by, air-flow enters expansion chambers 3 26 by porous inner tube 22, again expands, reduces a part of noise.
Subsequently, air-flow from expansion chambers 3 26 enter on the downside of inner tube 20 flow to the right, when flowing to resonant chamber 2 27, due under
Also have a large amount of aperture in this part on side inner tube 20 body, therefore the friction of resonance and resistive sound absorbing element can occur again,
Consume low, in, do the noise of high band.
Finally, air-flow to continuing flowing, gets rid of rear class deafener by tailpipe 6 along downside inner tube 20.
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 (6)
1. a diesel engine deafener, it is characterised in that: include prime noise reduction cylinder and rear class noise reduction cylinder, in prime
Before and after noise reduction cylinder, end is respectively equipped with air inlet steel pipe one and steel pipe of giving vent to anger, and holds and be respectively equipped with out before and after rear class noise reduction cylinder
Gas tail pipe, is provided with air inlet steel pipe two on the stack shell of rear class noise reduction cylinder, and described steel pipe of giving vent to anger is connected with air inlet steel pipe two, interior
Combustion engine waste gas, after prime noise reduction cylinder noise reduction, enters rear class noise reduction cylinder noise reduction, finally goes out from outlet tail piece.
A kind of diesel engine deafener the most according to claim 1, it is characterised in that: at described prime noise reduction cylinder
Inside be provided with left clapboard and right clapboard, left clapboard and right clapboard prime hush pipe intracoelomic cavity be divided into left resonant chamber, expansion
Room and right resonant chamber, be respectively equipped with left porous inner tube and right porous inner tube, in left resonant chamber and right resonant chamber in left porous
All having multiple aperture on pipe and right porous inner tube, the left end of left porous inner tube connects air inlet steel pipe one, the right side of left porous inner tube
End is fixed on left clapboard and extend in expansion chambers, and the left end of right porous inner tube is fixed on right clapboard and extend into expansion chambers
In, the right-hand member of right porous inner tube connects steel pipe of giving vent to anger.
A kind of diesel engine deafener the most according to claim 1, it is characterised in that: at described rear class noise reduction cylinder
Internal be from left to right spaced be provided with all have on dividing plate one, dividing plate two, dividing plate three and dividing plate four, dividing plate three and dividing plate four multiple
Aperture, rear class hush pipe intracoelomic cavity is from left to right divided into expansion chambers three, resonant chamber two, resonant chamber one, expansion by four dividing plates
Room one and expansion chambers two, be provided with resistive sound absorbing element in resonant chamber two, further respectively has upside in rear class noise reduction inner barrel
Inner tube and downside inner tube, upside inner tube and downside inner tube sequentially pass through four dividing plates and left and right end lays respectively at expansion chambers three and expands
Open in room two, the outlet tail piece on the left of the left end connection of upside inner tube, the outlet tail piece on the right side of the right-hand member connection of downside inner tube, on
Side inner tube is positioned on the segment section of resonant chamber one and has multiple aperture, and downside inner tube is positioned on the segment section of resonant chamber two to be opened
There are multiple aperture, described air inlet steel pipe two extend into expansion chambers one inside and connect air inlet inner tube, also set in resonant chamber two
Having porous inner tube, porous inner tube has multiple aperture, the left and right end of porous inner tube is respectively protruding into expansion chambers three and resonant chamber one
In.
A kind of diesel engine deafener the most according to claim 3, it is characterised in that: described dividing plate one, dividing plate two,
Connect between dividing plate three and dividing plate four and have support bar.
A kind of diesel engine deafener the most according to claim 1, it is characterised in that: described prime noise reduction cylinder
Cross section is trapezoidal, and rear class noise reduction cylinder is flat structure.
A kind of diesel engine deafener the most according to claim 3, it is characterised in that: shown resistive sound absorbing element is
Glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620775798.1U CN205805654U (en) | 2016-07-22 | 2016-07-22 | A kind of diesel engine deafener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620775798.1U CN205805654U (en) | 2016-07-22 | 2016-07-22 | A kind of diesel engine deafener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805654U true CN205805654U (en) | 2016-12-14 |
Family
ID=57508298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620775798.1U Expired - Fee Related CN205805654U (en) | 2016-07-22 | 2016-07-22 | A kind of diesel engine deafener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205805654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971688A (en) * | 2016-07-22 | 2016-09-28 | 合肥汇凌汽车零部件有限公司 | Diesel internal combustion engine silencer |
-
2016
- 2016-07-22 CN CN201620775798.1U patent/CN205805654U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971688A (en) * | 2016-07-22 | 2016-09-28 | 合肥汇凌汽车零部件有限公司 | Diesel internal combustion engine silencer |
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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 |