CN106401699A - Gasoline exhaust silencer - Google Patents
Gasoline exhaust silencer Download PDFInfo
- Publication number
- CN106401699A CN106401699A CN201610377033.7A CN201610377033A CN106401699A CN 106401699 A CN106401699 A CN 106401699A CN 201610377033 A CN201610377033 A CN 201610377033A CN 106401699 A CN106401699 A CN 106401699A
- Authority
- CN
- China
- Prior art keywords
- air
- vent
- anger
- inner tube
- baffle
- 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
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
- 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
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
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 invention discloses a gasoline exhaust silencer. The silencer comprises a casing as well as a front outer baffle and a back outer baffle which are located at the front end and the back end of the casing to seal the casing; four inner baffles are arranged inside the casing; an inner cavity of the casing is divided by each inner baffle into five chambers; at least 60 air holes are formed in each inner baffle; an air inlet is formed in the middle of the casing; the outer layer of the air inlet in the middle of the casing is sleeved with a reinforcing plate outer layer; air outlet inner pipes are inserted in two ends of the casing; at least 250 air holes are formed in the middle of each air outlet inner pipe; and sound absorbing layers are arranged on outer walls of the air holes in the middles of the air outlet inner pipes. The silencer is reasonable in structure, has the relatively good silencing effect at the temperature and under the pressure of a working air flow in the required frequency range, the sound is reduced by 1-2 db at the rated rotating speed, and the power loss is reduced by 0.3%.
Description
Technical field
The present invention relates to a kind of auto parts machinery, more particularly to a kind of gasoline exhaust muffler.
Background technology
With developing rapidly of China's economy, automobile pollution increases swift and violent, is even more in some big city automobile quantity
Sharply increase, automobile noise have become as harm urban environment main because of rope, automobile noise accounts for the 75% of ambient noise.For
The noise of restricting vehicle, country has formulated increasingly stricter mandatory noise criteria, and automotive industrial policy also specifies
Unauthenticated qualified product must not be sold, import and use, therefore reduce automobile noise and have become as each automobile production producer
The important topic facing；And automobile exhaust system accounts for that vehicle complete vehicle distributes noise 36%, generally high than other noises
10-15 decibel, therefore reducing exhaust noise is the main path reducing automobile noise.Existing silencer is all including housing and position
In front outer baffle and the rear outer baffle of housing described in housing forward end and back-end closure, described enclosure interior interval setting from front to back
There are four pieces of Internal baffles, described housing cavity is divided into five chambers by described Internal baffle, from front to back described first plate washer and
It is provided with air-vent, described housing central section is provided with air inlet, described housing central section air inlet outer layer is arranged with benefit on four plate washers
Strong plate outer layer, described first plate washer and the second plate washer are inserted with interpolation pipe, described interpolation pipe connect first chamber and the 3rd chamber,
It is provided with least more than 50 air-vents, described third gear plate and fourth speed plate are all inserted with interpolation in the middle part of described interpolation pipe
Pipe, described interpolation pipe connects the 3rd chamber and the 5th chamber, is provided with least more than 50 air-vents, institute in the middle part of described interpolation pipe
State housing two ends and be all inserted with inner tube of giving vent to anger, in the middle part of described inner tube of giving vent to anger, be provided with least 250 air-vents, inner tube of giving vent to anger goes out
It is provided with least 20 air-vents at mouthful, 250 hole outer walls are provided with absorbent treatment.Such silencer, can play certain
Noise elimination effect, but noise can not be reduced further.
Content of the invention
The present invention completes to solve of the prior art not enough, it is an object of the invention to provide rational in infrastructure,
Under the temperature and pressure of working air current, in the frequency range needing, there is preferable soundproof effect so as in rated speed
Under reduce 1-2 decibel, power loss reduces 0.3% gasoline exhaust muffler.
The technical scheme is that：A kind of gasoline exhaust muffler, it includes housing and is located at housing forward end and rear end
The front outer baffle of closing housing and rear outer baffle, described housing central section is provided with air inlet, described housing central section air inlet outer layer jacket
It is provided with stiffening plate outer layer, described housing two ends are all inserted with inner tube of giving vent to anger, described inner tube of giving vent to anger is provided with least 250 thoroughly
Pore, the middle part air-vent outer wall of described inner tube of giving vent to anger is provided with absorbent treatment, the outlet side of inner tube of giving vent to anger does not have air-vent.
The further technical scheme of the present invention is：Described absorbent treatment is made up of glass fibre, and described glass fibre is set in
Described give vent to anger outside 250 ventilative hole walls of inner tube；Described absorbent treatment by sleeve pipe be fixed on described in give vent to anger 250 ventilative hole walls of inner tube
Outward, described sleeve pipe front-end and back-end shrink be fixed on described in give vent to anger inner tube tube wall on.
Further, 250 air-vents given vent to anger in inner tube, are scattered in elliptical shape, and the inwall of each air-vent is outer
Face diameter is big, the little venturi-shaped of mid diameter.
The present invention further technical scheme is：Described sleeve pipe is steel pipe, and spot welding is passed through after shrinking in described sleeve pipe two ends
Mode is given vent to anger in inner tube described in being fixed on.
Further technical scheme is the present invention：Described enclosure interior is provided with Internal baffle, and Internal baffle includes gear in first
Plate, the second Internal baffle, the 3rd Internal baffle and the 4th internal flap, every piece of internal flap are equipped with least 60 air-vents, in every piece
Housing cavity is divided into five chambers by baffle plate.
Further technical scheme is the present invention：Described housing central section is provided with air inlet；Described housing central section air inlet
Outer layer is arranged with stiffening plate outer layer；Described hull outside is arranged with thermal baffle layer.
The present invention compared with prior art has following features：
1st, a kind of gasoline exhaust muffler that the present invention provides, 250 ventilative hole wall peripheral hardwares of described inner tube of giving vent to anger are equipped with sound absorption
Layer, absorbent treatment can effectively absorb sound wave, and the outlet side of inner tube of giving vent to anger does not have air-vent, so that sound wave can't pass inner tube of giving vent to anger
Upper air-vent, sound wave produces reflection in chamber, thus reducing noise.
2nd, a kind of gasoline exhaust muffler that the present invention provides, every piece of internal flap, at least provided with 60 air-vents, so makes
Sound ratio milder, smoothly, through experimental test, noise reduces 1-2 decibel, power loss under rated speed to air-flow ratio
Reduce 0.3%.
Brief description
Fig. 1 is the cut-away view of the present invention；
Fig. 2 is the inner side elevational view of the present invention；
Fig. 3 is absorbent treatment and the sleeve pipe schematic diagram of the present invention；
Fig. 4 is inventive shell air inlet and stiffening plate schematic diagram.
Figure number explanation
1 ... housing 2 ... front outer baffle 3 ... rear outer baffle 4 ... air inlet
5 ... give vent to anger inner tube 6 ... air-vent 7 ... chamber 8 ... first Internal baffle
9 ... second Internal baffle 10 ... the 3rd Internal baffle 11 ... the 4th Internal baffle 12 ... absorbent treatment
13 ... sleeve pipe 14 ... thermal insulation board 15 ... stiffening plates.
Specific embodiment
1 to Fig. 4 is described in further detail to the present invention below in conjunction with the accompanying drawings.
Referring to figs. 1 to Fig. 4, the present invention a kind of gasoline exhaust muffler, it includes housing 1 and is located at housing 1 front end
With front outer baffle 2 and the rear outer baffle 3 of back-end closure housing 1, it is provided with air inlet 4 in the middle part of described housing 1, in the middle part of described housing 1
Air inlet 4 outer layer is arranged with stiffening plate 15 outer layer, and the effect of stiffening plate 15 outer layer is to strengthen blast pipe intensity, so that blast pipe is not allowed
Easy fracture；Described housing 1 two ends are inserted with inner tube 5 of giving vent to anger；It is provided with absorbent treatment on the middle part tube wall of described inner tube 5 of giving vent to anger；Inhale
Sound layer can effectively absorb sound wave, reduces noise.
There is no interpolation pipe so that sound ratio is milder on every piece of internal flap in described housing, air-flow ratio smoothly, through examination
Test tries, and noise reduces 1-2 decibel under rated speed, and power loss reduces 0.3%；Described absorbent treatment 12 is by glass fibers
Dimension is made, described absorbent treatment 12 be sheathed on described in give vent to anger outside the tube wall of inner tube 5 middle part；
250 air-vents 6 in inner tube of giving vent to anger 5, are scattered in elliptical shape, and the inwall of each air-vent 6 is that outside diameter is big, in
Between the little venturi-shaped of diameter.When gas passes through air-vent 6, being relatively large in diameter of inlet port, more gases can be made
Enter air-vent 6, air-vent 6 mid diameter is less, a compression is produced to gas, and when gas leaves air-vent 6,
Diameter becomes big, the energy release in gas, can play more preferable soundproof effect.
Described absorbent treatment by sleeve pipe 13 be fixed on described in give vent to anger on the tube wall of inner tube 5 middle part, described sleeve pipe 13 front end and after
End shrink be fixed on described in give vent to anger inner tube 5 tube wall on；Described sleeve pipe 13 is steel pipe, and point is passed through after shrinking in described sleeve pipe 13 two ends
Weldering mode is given vent to anger in inner tube 5 described in being fixed on；So absorbent treatment do not allow easy to fall off, be also convenient for process.
It is provided with Internal baffle, Internal baffle includes the first Internal baffle 8, the second Internal baffle 9, the 3rd Internal baffle inside described housing 1
10 and the 4th Internal baffle 11, every piece of Internal baffle is equipped with least 60 air-vents 6, housing 1 inner chamber is separated by every piece of Internal baffle
For five chambers 7, this five chambers 7 can also be referred to as anechoic chamber；Sound wave can be by air-vent 6 on internal flap from the 3rd chamber
Enter into first, second, the four, the 5th chambers 7, the first to the 5th chamber 7 defines expansion chambers；Sound wave is in expansion indoor propagation
The stronger reflection of Shi Fasheng and interference, low-frequency noise wave length of sound is long, is easier transmitting and interferes, thus effectively
Reduce the acoustic energy of low-frequency noise；Using the silencer of this spline structure, through experimental test data display, in lower frequency
Section（50-200Hz）The interior noise 3-4 decibel that can effectively reduce engine；In addition, being arranged with heat-insulated outside described housing 1
14 layers of plate；The effect that 14 layers of thermal insulation board is heat-insulated.
At least 60 air-vents 6 are equipped with every piece of Internal baffle, are scattered in garden ring shape, the inwall of each air-vent 6 is
Outside diameter is big, the little venturi-shaped of mid diameter.When gas passes through air-vent 6, being relatively large in diameter of inlet port, permissible
Make more gases enter air-vents 6, air-vent 6 mid diameter is less, a compression produced to gas, and work as gas from
When opening air-vent 6, diameter becomes big, the energy release in gas, can play more preferable soundproof effect.
Above-mentioned only the specific embodiment in the present invention is illustrated, but can not be all as protection scope of the present invention
It is to zoom in or out according to the equivalence changes done by design spirit in the present invention or modification or equal proportion, all be considered as
Enter protection scope of the present invention.
Claims (9)
1. a kind of gasoline exhaust muffler it is characterised in that：It includes housing and is located at housing forward end and back-end closure housing
Front outer baffle and rear outer baffle, described housing central section is provided with air inlet, and described housing central section air inlet outer layer is arranged with stiffening plate
Outer layer, described housing two ends are all inserted with inner tube of giving vent to anger, and described inner tube of giving vent to anger is provided with least 250 air-vents, described
It is provided with absorbent treatment on the middle part air-vent outer wall of inner tube of giving vent to anger.
2. a kind of gasoline exhaust muffler according to claim 1 it is characterised in that：Described absorbent treatment is by glass fibre system
Become, described absorbent treatment be sheathed on described in give vent to anger air-vent outer wall in the middle part of inner tube.
3. a kind of gasoline exhaust muffler according to claim 1 it is characterised in that：Described absorbent treatment is fixed by sleeve pipe
Air-vent outer wall in the middle part of described inner tube of giving vent to anger, described sleeve pipe front-end and back-end shrink be fixed on described in give vent to anger the tube wall of inner tube
On.
4. a kind of gasoline exhaust muffler according to claim 1 and 2 it is characterised in that：250 giving vent to anger in inner tube are thoroughly
Pore, is scattered in elliptical shape, and the inwall of each air-vent is that outside diameter is big, the little venturi-shaped of mid diameter.
5. a kind of gasoline exhaust muffler according to claim 3 it is characterised in that：Described sleeve pipe is steel pipe, described set
Pipe two ends shrink after by spot welding mode be fixed on described in give vent to anger in inner tube.
6. a kind of gasoline exhaust muffler according to claim 1 it is characterised in that：Described enclosure interior is provided with interior gear
Plate, Internal baffle includes for the first Internal baffle, the second Internal baffle, the 3rd Internal baffle and the 4th internal flap, every piece of internal flap being all provided with
There are at least 60 air-vents, housing cavity is divided into five chambers by every piece of Internal baffle.
7. a kind of gasoline exhaust muffler according to claim 6 it is characterised in that：It is equipped with least on every piece of Internal baffle
60 air-vents, air-vent is scattered in garden ring shape, and the inwall of each air-vent is that outside diameter is big, the little civilian mound of mid diameter
In tube shape.
8. a kind of gasoline exhaust muffler according to claim 1 it is characterised in that：Described housing central section is provided with air inlet
Mouthful, described housing central section air inlet outer layer is arranged with stiffening plate outer layer.
9. a kind of gasoline exhaust muffler according to claim 1 it is characterised in that：Described hull outside is arranged with heat-insulated
Flaggy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377033.7A CN106401699A (en) | 2016-05-31 | 2016-05-31 | Gasoline exhaust silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377033.7A CN106401699A (en) | 2016-05-31 | 2016-05-31 | Gasoline exhaust silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106401699A true CN106401699A (en) | 2017-02-15 |
Family
ID=58005428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610377033.7A Pending CN106401699A (en) | 2016-05-31 | 2016-05-31 | Gasoline exhaust silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106401699A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025890A (en) * | 1989-02-23 | 1991-06-25 | Mazda Motor Corporation | Engine exhaust apparatus |
| CN201486624U (en) * | 2009-08-03 | 2010-05-26 | 奇瑞汽车股份有限公司 | Exhaust gas silencer |
| KR20130060839A (en) * | 2011-11-30 | 2013-06-10 | 현대자동차주식회사 | Muffler for vehicles in order to perform sporty booming sound |
| KR20130128808A (en) * | 2012-05-18 | 2013-11-27 | 디젠스 주식회사 | Resonator for turbo charger |
| CN103867276A (en) * | 2012-12-12 | 2014-06-18 | 起亚自动车株式会社 | Dual muffler |
| CN103912358A (en) * | 2014-04-21 | 2014-07-09 | 上汽通用五菱汽车股份有限公司 | Stamping muffler |
| CN104612798A (en) * | 2013-11-04 | 2015-05-13 | 天津华瑞达汽车消声器有限公司 | Muffler air inlet pipe |
| CN204371457U (en) * | 2014-10-24 | 2015-06-03 | 重庆金仑工业股份有限公司 | Exhaust system for motorcycle silencing apparatus |
| CN204371463U (en) * | 2014-12-11 | 2015-06-03 | 湘电重型装备有限公司 | A kind of muffler for motor |
| CN204851384U (en) * | 2015-07-22 | 2015-12-09 | 邓厚才 | In advance two swallow tail flat amortization drums that go out |
| CN105464753A (en) * | 2014-08-28 | 2016-04-06 | 天津华瑞达汽车消声器有限公司 | Secondary silencer for automobile |
| CN205654402U (en) * | 2016-05-31 | 2016-10-19 | 湖南长丰汽车零部件有限责任公司 | Gasoline exhaust muffler |
-
2016
- 2016-05-31 CN CN201610377033.7A patent/CN106401699A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025890A (en) * | 1989-02-23 | 1991-06-25 | Mazda Motor Corporation | Engine exhaust apparatus |
| CN201486624U (en) * | 2009-08-03 | 2010-05-26 | 奇瑞汽车股份有限公司 | Exhaust gas silencer |
| KR20130060839A (en) * | 2011-11-30 | 2013-06-10 | 현대자동차주식회사 | Muffler for vehicles in order to perform sporty booming sound |
| KR20130128808A (en) * | 2012-05-18 | 2013-11-27 | 디젠스 주식회사 | Resonator for turbo charger |
| CN103867276A (en) * | 2012-12-12 | 2014-06-18 | 起亚自动车株式会社 | Dual muffler |
| CN104612798A (en) * | 2013-11-04 | 2015-05-13 | 天津华瑞达汽车消声器有限公司 | Muffler air inlet pipe |
| CN103912358A (en) * | 2014-04-21 | 2014-07-09 | 上汽通用五菱汽车股份有限公司 | Stamping muffler |
| CN105464753A (en) * | 2014-08-28 | 2016-04-06 | 天津华瑞达汽车消声器有限公司 | Secondary silencer for automobile |
| CN204371457U (en) * | 2014-10-24 | 2015-06-03 | 重庆金仑工业股份有限公司 | Exhaust system for motorcycle silencing apparatus |
| CN204371463U (en) * | 2014-12-11 | 2015-06-03 | 湘电重型装备有限公司 | A kind of muffler for motor |
| CN204851384U (en) * | 2015-07-22 | 2015-12-09 | 邓厚才 | In advance two swallow tail flat amortization drums that go out |
| CN205654402U (en) * | 2016-05-31 | 2016-10-19 | 湖南长丰汽车零部件有限责任公司 | Gasoline exhaust muffler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106468197B (en) | A kind of wideband noise-reducing silencer | |
| CN104948263B (en) | One kind expansion resonance composite muffler | |
| CN202578840U (en) | Automobile exhaust silencer | |
| CN205654400U (en) | Silencer | |
| CN202228158U (en) | Silencer for light truck | |
| CN103277171B (en) | Novel exhaust muffling structure | |
| CN205654402U (en) | Gasoline exhaust muffler | |
| CN204716362U (en) | Engineering machinery noise-reducing silencer | |
| CN206158820U (en) | Impedance combined silencer | |
| CN106401699A (en) | Gasoline exhaust silencer | |
| CN203321650U (en) | Transverse flow perforated pipe silencer structure with choked flow barrier | |
| CN206338099U (en) | A kind of wideband noise-reducing silencer | |
| CN204877594U (en) | Compound silencer of expansion resonance | |
| CN202047891U (en) | Gasoline exhaust muffler | |
| CN105422337A (en) | Air intake silencer | |
| CN206111278U (en) | Car exhaust system premuffler | |
| CN201620933U (en) | Diesel oil exhaust muffler | |
| CN201687552U (en) | Gasoline exhaust muffler | |
| CN108798828B (en) | Muffler for automobile engine | |
| CN205638611U (en) | Multicavity backward flow dissipation combined type muffling device | |
| CN206376917U (en) | Absolute silencer is used in the experiment of full frequency band large noise elimination quantity auto NVH | |
| CN211874577U (en) | Exhaust silencer for formula car | |
| CN214273839U (en) | Multi-cylinder diesel engine intake pipe with noise reduction function | |
| CN201502421U (en) | Anti-noise structure for motor of diesel generator | |
| CN213510797U (en) | Multi-cavity resonance composite muffler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
|
| RJ01 | Rejection of invention patent application after publication |