CN108005756A - A kind of muffler ASSY - Google Patents
A kind of muffler ASSY Download PDFInfo
- Publication number
- CN108005756A CN108005756A CN201711496249.6A CN201711496249A CN108005756A CN 108005756 A CN108005756 A CN 108005756A CN 201711496249 A CN201711496249 A CN 201711496249A CN 108005756 A CN108005756 A CN 108005756A
- Authority
- CN
- China
- Prior art keywords
- rear end
- silencer
- end silencer
- partition
- sound
- 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.)
- Pending
Links
- 230000003584 silencer Effects 0.000 claims abstract description 83
- 238000005192 partition Methods 0.000 claims description 36
- 239000011358 absorbing material Substances 0.000 claims description 25
- 230000008030 elimination Effects 0.000 claims description 12
- 238000003379 elimination reaction Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 abstract description 2
- 239000002250 absorbent Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/04—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/10—Plastic foam
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a kind of muffler ASSY, including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group includes at least two rear end silencers, the exhaust pipe is connected to front end silencer, the front end silencer afterbody is connected respectively to each rear end silencer in the silencer group of rear end by by-pass tube, the length of each rear end silencer is different, it is equipped with tubular beam on the outside of each rear end silencer, the beam on each rear end silencer connects into an entirety；The journal stirrup for setting and being used for installing the muffler ASSY is further included, the journal stirrup is disposed therein on a rear end silencer and is connected with the beam.The present invention can weaken the vibrations of silencer, effectively reduce the noise of a variety of different frequencies, also have broader noise absorbent frequency.
Description
Technical field
The invention belongs to silencer technical field, and in particular to a kind of muffler ASSY.
Background technology
Silencer is to allow air-flow by that but can prevent or reduce a kind of device of sound transmission, be to eliminate air to move
The important measures of power noise.Silencer can stop the propagation of sound wave, it is allowed to which air-flow is by being the effective work for controlling noise
Tool.
The silencer of traditional motor vehicles, usually only considered the noise of air-flow in exhaust pipe, without in view of disappearing
Except noise caused by the vibrations of silencer in itself；And be mostly the noise that considers to eliminate particular frequency range, can not will be a wide range of
The noise of multi-frequency eliminates well, its narrow scope of application.
The content of the invention
For the deficiency in the presence of the prior art, the present invention provides a kind of vibrations that can weaken silencer, can
Effectively weaken the noise of a variety of different frequencies, have the muffler ASSY of broader noise absorbent frequency.
A kind of muffler ASSY, including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group bag
At least two rear end silencers are included, the exhaust pipe is connected to front end silencer, and the front end silencer afterbody passes through by-pass tube
The each rear end silencer being connected respectively in the silencer group of rear end, the length of each rear end silencer is different, described
It is equipped with tubular beam on the outside of each rear end silencer, the beam on each rear end silencer connects into an entirety；Also wrap
Include to set and be used to installing the journal stirrup of the muffler ASSY, the journal stirrup be disposed therein on a rear end silencer and with it is described
Beam connects.
Further, rear end housing is coated with the outside of the rear end silencer, the rear end silencer includes being arranged on cylinder
Protecgulum, rear cover and the first partition being arranged between the protecgulum and rear cover of internal side, the rear end silencer and branch
Pipe is connected by connecting tube, and described connecting tube one end is connected to branch inside pipe wall, and the other end is connected on the protecgulum and stretches into
The rear end silencer；Rear end silencer is divided into towards the preceding expansion cavity of protecgulum side and towards rear cover by the first partition
The rear expansion cavity of side, the first partition are equipped with least two along the equally distributed through hole of first partition circumferencial direction, institute
State through hole and be equipped with the first partition snorkel for connecting preceding expansion cavity and rear expansion cavity, covered after described equipped with expansion cavity after connection
With the rear cover snorkel outside the silencer of rear end.
Further, further, the connecting tube stretches into the end of rear end silencer and is blocked by blanking cover, in the connection
Pipe side wall is along the circumferential direction equipped with multiple ventilation holes close to the position of blanking cover.
Further, second partition is additionally provided between first partition and the blanking cover, is equipped with the middle part of the second partition
Through the second partition snorkel of the second partition, the second partition is towards the side of connecting tube and the rear end silencer
Sound-absorbing material is equipped between inner wall.
Further, the sound-absorbing material is glass fibre or sponge plastics.
Further, the front end silencer includes upper shell and lower housing shell and is disappeared by what upper shell and lower housing shell surrounded
The operatic tunes, the upper shell are equipped with upper web plate, and sound-absorbing material is filled between the upper shell and upper web plate；On the lower housing shell
Equipped with lower web plate, sound-absorbing material is filled between the lower housing shell and lower web plate；Tubular sound absorption knot is additionally provided with the noise elimination cavity
Structure, the tubular sound absorption structure include outer net cylinder and interior net cylinder, filling sucting sound material between outer net cylinder and interior net cylinder；The outer net
The section thickness of sound-absorbing material between cylinder and interior net cylinder gradually increases along air current flow direction.
Further, the cross sectional shape of the outer net cylinder is circular or regular polygon, the shape in the interior net cylinder section with
Outer net cylinder cross sectional shape is similar.
Further, the sound-absorbing material is glass fibre or sponge plastics.
Compared with the prior art, the present invention has the advantages that：
1st, the present invention connects into an entirety by using multiple parallel silencers by beam, can effectively weaken noise elimination
The vibration of device, reaches the effect of noise elimination noise reduction；
2nd, the present invention coordinates aperture and sound-absorbing material, energy by the path by adjusting air-flow using multistage expansion cavity
Enough noises for effectively weakening a variety of different frequencies, reach more preferable noise elimination effect；
3rd, the present invention is inhaled by the tubular for setting sound-absorbing material thickness gradually to increase between the sound absorption structure of housing surrounding
Acoustic form, can have broader absorption frequency, the overall acoustic attenuation performance of silencer has substantially compared with common uniform thickness sound-absorbing material
Improve.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present invention；
Fig. 2 is acoustic wave filter structure schematic diagram in rear end of the present invention；
Fig. 3 is acoustic wave filter structure schematic diagram in front end of the present invention.
Wherein, 1 exhaust pipe, 2 front end silencers, 21 upper shells, 22 lower housing shells, 24 upper web plates, 26 times web plates, 27 outer nets
Cylinder, net cylinder in 28,3 rear end silencers, end housing after 30,31 cylinders, 32 protecgulums, 33 rear covers, 34 first partitions, 35 connecting tubes,
Expansion cavity before 36, expansion cavity after 37,38 first partition snorkels, 39 rear cover snorkels, 310 blanking covers, 311 ventilation holes, 312
Two partition plates, 313 second partition snorkels, 4 by-pass tubes, 5 beams, 6 journal stirrups, 7 sound-absorbing materials.
Embodiment
In order to make the technical means, creative features, achievable purpose and effectiveness that invention is realized easy to understand, with reference to
It is specifically illustrating, the present invention is further explained.
Embodiment 1：
A kind of muffler ASSY, as shown in Figure 1, including exhaust pipe 1, front end silencer 2 and rear end silencer group, after described
End silencer group includes at least two rear end silencers 3, and the exhaust pipe 1 is connected to front end silencer 2, the front end silencer
2 afterbodys are connected respectively to each rear end silencer 3 in the silencer group of rear end by by-pass tube 4, each rear end silencer 3
Length is different, and the outside of each rear end silencer 3 is equipped with tubular beam 5, the beam on each rear end silencer 3
5 connect into an entirety；The journal stirrup 6 for setting and being used for installing the muffler ASSY is further included, the journal stirrup 6 is disposed therein one
It is connected on a rear end silencer 3 and with the beam 5.
The length of each rear end silencer is different, its resonant frequency is also different, is set in the present embodiment on the outside of each silencer
Put beam and connected the parallel rear end silencer of multiple and different length using beam, pass through multiple and different noise eliminations
The vibration of device cancels each other to realize silencer damping and prevent suppressor case from resonating, so as to reach the effect of noise elimination noise reduction.
Embodiment 2：
In embodiment 1 on the basis of technical solution, as shown in Fig. 2, the outside of the rear end silencer 3 is coated with rear end housing
Body 30, the rear end silencer 3 include being arranged on the protecgulum 32 of the inner side of cylinder 31, rear cover 33 and are arranged on 32 and of protecgulum
First partition 34 between rear cover 33, the rear end silencer 3 are connected with by-pass tube 4 by connecting tube 35, the connecting tube 35
One end is connected to 4 inner wall of by-pass tube, and the other end is connected on the protecgulum 32 and stretches into the rear end silencer 3；Described first
Partition plate 34 divides rear end silencer 3 for towards the preceding expansion cavity 36 of 32 side of protecgulum and the rear expansion cavity towards 33 side of rear cover
37, the first partition 34 is equipped with least two along the equally distributed through hole of 34 circumferencial direction of first partition, on the through hole
First partition snorkel 38 equipped with the preceding expansion cavity 36 of connection and rear expansion cavity 37, the rear cover 33 are equipped with expansion cavity after connection
37 and rear end silencer outside rear cover snorkel 39.
The reflection and interference of acoustic energy so can be preferably caused by multistage expansion cavity and multiple snorkels, reduces and eliminates the noise
Device reaches the effect of noise reduction to the acoustic energy of external radiation.
As a further optimization of the scheme , the end that the connecting tube 35 stretches into rear end silencer 3 is blocked by blanking cover 310,
In 35 side wall of connecting tube multiple ventilation holes 311 are along the circumferential direction uniformly provided with close to the position of blanking cover 310.The ventilation
The diameter of aperture 311 is between 1mm~2mm.
So noise elimination effect can further be strengthened by the method for micropore jet.
As a further optimization of the scheme , second partition 312 is additionally provided between first partition 34 and the blanking cover 310,
The middle part of second partition 312 is provided through the second partition snorkel 313 of the second partition 312, the second partition 312
Towards being equipped with sound-absorbing material 7 between the side of connecting tube 35 and 3 inner wall of rear end silencer.Especially, the sound-absorbing material 7
Glass fibre or sponge plastics can be used.
This programme, can using sound-absorbing material cooperation micropore jet and multistage expansion cavity by adjusting the path of air-flow
Effectively weaken the noise of a variety of different frequencies, reach more preferable noise elimination effect.
Embodiment 3：
In embodiment 1~2 on the basis of any scheme, as shown in figure 3, the front end silencer 2 includes upper shell
21 and lower housing shell 22 and the noise elimination cavity that is surrounded by upper shell 21 and lower housing shell 22, the upper shell 21 be equipped with upper web plate 24,
Sound-absorbing material 7 is filled between the upper shell 21 and upper web plate 24；The lower housing shell 22 is equipped with lower web plate 26, the lower casing
Sound-absorbing material 7 is filled between body 22 and lower web plate 26；In the noise elimination cavity cylinder is additionally provided with (i.e. between upper shell and lower housing shell)
Shape sound absorption structure, the tubular sound absorption structure include outer net cylinder 27 and interior net cylinder 28, are filled between outer net cylinder 27 and interior net cylinder 28
Sound-absorbing material 7.The section thickness of sound-absorbing material 7 between the outer net cylinder 27 and interior net cylinder 28 gradually increases along air current flow direction
Greatly.
For sound-absorbing porous material, with the increase of material thickness, its frequency that absorbs sound gradually is moved to low frequency.This reality
The tubular sound absorption structure for being used in example and setting sound-absorbing material thickness gradually to increase between the sound absorption structure of housing surrounding is applied, compared with
Common uniform thickness sound-absorbing material can have broader absorption frequency, and the overall acoustic attenuation performance of silencer is significantly improved.
Especially, the cross sectional shape of the outer net cylinder 27 can be circular or regular polygon (such as square or positive six side
Shape), the shape in interior 28 section of net cylinder is similar to outer net cylinder cross sectional shape.
Especially, the sound-absorbing material 7 can use glass fibre or sponge plastics.
The foregoing is merely the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned embodiment party
Formula, every technical solution for belonging to the principle of the invention belong to protection scope of the present invention.For those skilled in the art
Speech, some improvement carried out on the premise of the principle of the present invention is not departed from, these improvement also should be regarded as the protection model of the present invention
Enclose.
Claims (8)
- A kind of 1. muffler ASSY, it is characterised in that：Including exhaust pipe, front end silencer and rear end silencer group, the rear end silencer group is eliminated the noise including at least two rear ends Device, the exhaust pipe are connected to front end silencer, and the front end silencer afterbody is connected respectively to rear end by by-pass tube and eliminates the noise Each rear end silencer in device group, the length of each rear end silencer is different, is set on the outside of each rear end silencer There is a tubular beam, the beam on each rear end silencer connects into an entirety；It is described for installing to further include setting The journal stirrup of muffler ASSY, the journal stirrup are disposed therein on a rear end silencer and are connected with the beam.
- A kind of 2. muffler ASSY according to claim 1, it is characterised in that：Be coated with rear end housing on the outside of the rear end silencer, the rear end silencer include being arranged on protecgulum on the inside of cylinder, Rear cover and the first partition being arranged between the protecgulum and rear cover, the rear end silencer are connected with by-pass tube by connecting tube Connect, described connecting tube one end is connected to branch inside pipe wall, and the other end is connected on the protecgulum and stretches into the rear end silencer； Rear end silencer is divided into the preceding expansion cavity towards protecgulum side and the rear expansion cavity towards rear cover side by the first partition, The first partition is equipped with least two and is equipped with connection along the equally distributed through hole of first partition circumferencial direction, the through hole The first partition snorkel of preceding expansion cavity and rear expansion cavity, covers after described equipped with outside expansion cavity after connection and rear end silencer Rear cover snorkel.
- A kind of 3. muffler ASSY according to claim 2, it is characterised in that：Further, the connecting tube stretches into the end of rear end silencer and is blocked by blanking cover, in the connecting tube side wall close to stifled The position of lid is along the circumferential direction equipped with multiple ventilation holes.
- A kind of 4. muffler ASSY according to claim 3, it is characterised in that：Be additionally provided with second partition between first partition and the blanking cover, be provided through in the middle part of the second partition described second every The second partition snorkel of plate, the second partition towards between the side of connecting tube and the rear end silencer internal wall be equipped with inhale Sound material.
- A kind of 5. muffler ASSY according to claim 4, it is characterised in that：The sound-absorbing material is glass fibre or sponge plastics.
- A kind of 6. muffler ASSY according to claim 1, it is characterised in that：The front end silencer includes upper shell and lower housing shell and the noise elimination cavity surrounded by upper shell and lower housing shell, the upper casing Body is equipped with upper web plate, and sound-absorbing material is filled between the upper shell and upper web plate；The lower housing shell is equipped with lower web plate, institute State and sound-absorbing material is filled between lower housing shell and lower web plate；Tubular sound absorption structure is additionally provided with the noise elimination cavity, the tubular is inhaled Acoustic form includes outer net cylinder and interior net cylinder, filling sucting sound material between outer net cylinder and interior net cylinder；The outer net cylinder and interior net cylinder it Between the section thickness of sound-absorbing material gradually increase along air current flow direction.
- A kind of 7. muffler ASSY according to claim 6, it is characterised in that：The cross sectional shape of the outer net cylinder is circular or regular polygon, the shape in the interior net cylinder section and outer net cylinder cross sectional shape It is similar.
- A kind of 8. muffler ASSY according to claim 6, it is characterised in that：The sound-absorbing material is glass fibre or sponge plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496249.6A CN108005756A (en) | 2017-12-31 | 2017-12-31 | A kind of muffler ASSY |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711496249.6A CN108005756A (en) | 2017-12-31 | 2017-12-31 | A kind of muffler ASSY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005756A true CN108005756A (en) | 2018-05-08 |
Family
ID=62049888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711496249.6A Pending CN108005756A (en) | 2017-12-31 | 2017-12-31 | A kind of muffler ASSY |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135364A (en) * | 2021-12-07 | 2022-03-04 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity exhaust muffler for industrial vehicle |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651448Y (en) * | 2003-07-22 | 2004-10-27 | 王德福 | Double-cylinder silencer of motorcycle |
| CN2793341Y (en) * | 2005-04-12 | 2006-07-05 | 重庆隆鑫工业（集团）有限公司 | Reinforced silencer |
| CN2806778Y (en) * | 2005-07-06 | 2006-08-16 | 林辉江 | Exhaust muffler for diesel engine of railway passenger car with air conditioner |
| CN201110210Y (en) * | 2007-08-30 | 2008-09-03 | 重庆建设摩托车股份有限公司 | Engine exhaust silencer |
| CN202611803U (en) * | 2012-05-10 | 2012-12-19 | 东南大学 | Muffler for exhausting of vehicles |
| CN204113418U (en) * | 2014-09-23 | 2015-01-21 | 佛山市佛斯弟摩托车制造有限公司 | A kind of double tail pipe silencing apparatus |
| CN204663627U (en) * | 2015-04-02 | 2015-09-23 | 刘玺 | Be applicable to combined impedance silencing apparatus that is middle and high, low frequency noise elimination |
| CN104948265A (en) * | 2015-03-30 | 2015-09-30 | 徐工集团工程机械股份有限公司科技分公司 | Impedance compound muffler |
| CN207795345U (en) * | 2017-12-31 | 2018-08-31 | 重庆固发机械制造有限责任公司 | Muffler ASSY |
-
2017
- 2017-12-31 CN CN201711496249.6A patent/CN108005756A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651448Y (en) * | 2003-07-22 | 2004-10-27 | 王德福 | Double-cylinder silencer of motorcycle |
| CN2793341Y (en) * | 2005-04-12 | 2006-07-05 | 重庆隆鑫工业（集团）有限公司 | Reinforced silencer |
| CN2806778Y (en) * | 2005-07-06 | 2006-08-16 | 林辉江 | Exhaust muffler for diesel engine of railway passenger car with air conditioner |
| CN201110210Y (en) * | 2007-08-30 | 2008-09-03 | 重庆建设摩托车股份有限公司 | Engine exhaust silencer |
| CN202611803U (en) * | 2012-05-10 | 2012-12-19 | 东南大学 | Muffler for exhausting of vehicles |
| CN204113418U (en) * | 2014-09-23 | 2015-01-21 | 佛山市佛斯弟摩托车制造有限公司 | A kind of double tail pipe silencing apparatus |
| CN104948265A (en) * | 2015-03-30 | 2015-09-30 | 徐工集团工程机械股份有限公司科技分公司 | Impedance compound muffler |
| CN204663627U (en) * | 2015-04-02 | 2015-09-23 | 刘玺 | Be applicable to combined impedance silencing apparatus that is middle and high, low frequency noise elimination |
| CN207795345U (en) * | 2017-12-31 | 2018-08-31 | 重庆固发机械制造有限责任公司 | Muffler ASSY |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135364A (en) * | 2021-12-07 | 2022-03-04 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity exhaust muffler for industrial vehicle |
| CN114135364B (en) * | 2021-12-07 | 2023-09-15 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity industrial vehicle exhaust muffler |
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Application publication date: 20180508 |