CN106481422A - Exhaust silencer assembly - Google Patents
Exhaust silencer assembly Download PDFInfo
- Publication number
- CN106481422A CN106481422A CN201611010612.4A CN201611010612A CN106481422A CN 106481422 A CN106481422 A CN 106481422A CN 201611010612 A CN201611010612 A CN 201611010612A CN 106481422 A CN106481422 A CN 106481422A
- Authority
- CN
- China
- Prior art keywords
- level
- inlet pipe
- dividing plate
- sound attenuation
- pipe
- 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
- 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
- F01N13/02—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 separate silencers in series
-
- 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
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
-
- 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
- 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
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
-
- 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
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 kind of exhaust silencer assembly, including one-level silencer and secondary muffler, one-level silencer includes one-level air inlet pipe and one-level escape pipe, and one-level air inlet pipe is located in one-level escape pipe, and with the gap for setting between one-level escape pipe and one-level air inlet pipe；Secondary muffler includes that secondary inlet pipe and two grades of escape pipes, secondary inlet pipe and two grades of escape pipes are crisscross arranged.The exhaust silencer assembly that the present invention is provided, by arranging one-level silencer and secondary muffler, and the escape pipe in one-level silencer is set in air inlet pipe, air inlet pipe in secondary muffler and escape pipe are crisscross arranged, it is achieved thereby that automobile is under full throttle operating mode, the low-frequency noise caused at exhaust pipe mouth can effectively be reduced, improve the comfort level of driving.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of exhaust silencer assembly.
Background technology
The NVH performance of the air inlet system and exhaust system of automobile is the key index for affecting car load NVH performance.Gas extraction system noise can draw
Rise and accelerate in-car roar, the problems such as idling internal car noise is big.In the prior art, automobile is accelerated in full throttle operating mode
During 2000rpm or so, there is strong sonorant in in-car, oppresses ear-drum, reduces the comfort level of driving, and noise fluctuations amplitude
7dB is reached, has had a strong impact on the NVH performance of car load.This sonorant is typically caused by gas extraction system mouth of pipe noise, and is low
Frequency noise.Therefore, develop a kind of silencer that can reduce this low-frequency noise and seem particularly necessary.
Content of the invention
It is an object of the invention to provide a kind of exhaust silencer assembly, to realize automobile under full throttle operating mode, Ke Yiyou
Effect reduces the low-frequency noise caused at exhaust pipe mouth, improves the comfort level of driving.
The invention provides a kind of exhaust silencer assembly, wherein, including：
One-level silencer, the one-level silencer include one-level air inlet pipe and one-level escape pipe, and the one-level air inlet pipe is worn
It is located in the one-level escape pipe, and with the gap for setting between the one-level escape pipe and the one-level air inlet pipe；
Secondary muffler, the secondary muffler include secondary inlet pipe and two grades of escape pipes, the secondary inlet pipe and
Two grades of escape pipes be arranged in parallel, and the gas outlet of the secondary inlet pipe is near the gas outlet of two grades of escape pipes, institute
State the air inlet of the air inlet near the secondary inlet pipe of two grades of escape pipes.
Exhaust silencer assembly as above, these, it is preferred to, the one-level silencer also include the first dividing plate and
Second partition, one end that the one-level escape pipe is coordinated with the one-level air inlet pipe are arranged on first dividing plate and described second
Between dividing plate；
The first sound attenuation hole is provided with first dividing plate and the second partition.
Exhaust silencer assembly as above, these, it is preferred to, the secondary muffler also include the 3rd dividing plate and
4th dividing plate, the secondary inlet pipe and two grades of escape pipes respectively also cross the 3rd dividing plate and the described 4th every
Plate；
The second sound attenuation hole is provided with 3rd dividing plate and the 4th dividing plate.
Exhaust silencer assembly as above, these, it is preferred to, on the 4th dividing plate and two grades of escape pipes
The distance between one end of gas outlet is 181mm；
The distance between 3rd dividing plate and the 4th dividing plate are 70mm.
Exhaust silencer assembly as above, these, it is preferred to, second sound attenuation hole includes big sound attenuation hole and little
Sound attenuation hole, a diameter of 10mm of the big sound attenuation hole, a diameter of 3mm of the little sound attenuation hole.
Exhaust silencer assembly as above, these, it is preferred to, the quantity of the big sound attenuation hole is 9, described little
The quantity of sound attenuation hole is 4.
Exhaust silencer assembly as above, these, it is preferred to, the 3rd noise elimination is provided with the secondary inlet pipe
Be provided with hole, and the secondary inlet pipe the 3rd sound attenuation hole region be arranged on the 3rd dividing plate and the described 4th every
Between plate.
Exhaust silencer assembly as above, these, it is preferred to, sound-absorbing is additionally provided with the secondary inlet pipe
Cotton, and the acoustical cotton is wrapped on the secondary inlet pipe region for being provided with the 3rd sound attenuation hole.
Exhaust silencer assembly as above, these, it is preferred to, the secondary muffler is provided with two.
The exhaust silencer assembly that the present invention is provided, by arranging one-level silencer and secondary muffler, and one-level is disappeared
Escape pipe in sound device is set in air inlet pipe, the air inlet pipe in secondary muffler and escape pipe is crisscross arranged, so as to realize
Automobile can effectively reduce the low-frequency noise caused at exhaust pipe mouth, improve the comfort level of driving under full throttle operating mode.
Description of the drawings
Fig. 1 is that one-level silencer and secondary muffler are installed to the state diagram in gas extraction system；
Fig. 2 is the structural representation of one-level silencer；
Fig. 3 is the structural representation of secondary muffler；
Fig. 4 is the structural representation of the 3rd dividing plate or the 4th dividing plate；
Fig. 5 is the noise transmission loss of one-level silencer provided in an embodiment of the present invention and one-level silencer in prior art
Comparison diagram；
Fig. 6 is the noise transmission loss of secondary muffler provided in an embodiment of the present invention and secondary muffler in prior art
Comparison diagram.
Description of reference numerals：
100- one-level silencer 110- one-level air inlet pipe 120- one-level escape pipe
130- the first dividing plate 140- second partition 200- secondary muffler
210- secondary inlet pipe 211- bis- grades of escape pipes of the 3rd sound attenuation hole 220-
The big sound attenuation hole of the 4th dividing plate 241- of the 3rd dividing plate 240- of 230-
The little sound attenuation hole of 232-
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Fig. 1 is that one-level silencer and secondary muffler are installed to the state diagram in gas extraction system, and Fig. 2 is one-level silencer
Structural representation, Fig. 3 are the structural representation of secondary muffler, and Fig. 4 is the structural representation of the 3rd dividing plate or the 4th dividing plate.
Referring to Fig. 1 to Fig. 4, a kind of exhaust silencer assembly is embodiments provided, including one-level
Silencer 100 and secondary muffler 200, one-level silencer 100 include one-level air inlet pipe 110 and one-level escape pipe 120, and one is grading
Tracheae 110 is located in one-level escape pipe 120, and between setting between one-level escape pipe 120 and one-level air inlet pipe 110
Gap；Secondary muffler 200 includes secondary inlet pipe 210 and two grades of escape pipes 220, secondary inlet pipe 210 and two grades of escape pipes 220
It is arranged in parallel, and the gas outlet of secondary inlet pipe 210 is near the gas outlet of two grades of escape pipes 220, the air inlet of two grades of escape pipes 220
Mouth is near the air inlet of secondary inlet pipe 210.
During gas is flowed in exhaust silencer assembly provided in an embodiment of the present invention, gas flows successively through one
Level silencer 100 and secondary muffler 200；When gas flows through one-level silencer 100, gas is flowed into from one-level air inlet pipe 110,
Flow out from two grades of escape pipes 220, due to being provided with gap at the cooperation of one-level air inlet pipe 110 and one-level escape pipe 120, therefore
Helmholz resonance phenomenon can occur at the cooperation, i.e., low-frequency noise can be absorbed in large quantities near resonant frequency；Work as gas
When flowing through secondary muffler 200, gas is flowed into from secondary inlet pipe 210, is flowed out from two grades of escape pipes 220, due to secondary inlet
Pipe 210 and two grades of escape pipes 220 are set in parallel in the cavity of secondary muffler 200, and the gas outlet of secondary inlet pipe 210 is leaned on
The gas outlet of nearly two grades of escape pipes 220, the air inlet of two grades of escape pipes 220 is near the air inlet of secondary inlet pipe 210, therefore gas
Flow trace in the cavity of secondary muffler 200 can occur complications, so as to reduce the flow velocity of gas, it is suppressed that regeneration is made an uproar
Sound, so as to by arranging two-stage silencer, significantly reduce the low-frequency noise in blast pipe.
Further, secondary muffler 200 can be provided with two, it is possible thereby to inhale to low frequency noise further
Receive.
Further, one-level silencer 100 also includes the first dividing plate 130 and second partition 140, one-level escape pipe 120 with
One end that one-level air inlet pipe 110 coordinates is arranged between the first dividing plate 130 and second partition 140；First dividing plate 130 and second every
The first sound attenuation hole is provided with plate 140, it is possible thereby to reduce the radiated noise caused due to the flowing of gas further.
It will be appreciated by persons skilled in the art that with reference to Fig. 4, secondary muffler 200 can also include the 3rd dividing plate 230
With the 4th dividing plate 240, secondary inlet pipe 210 and two grades of escape pipes 220 are respectively through the 3rd dividing plate 230 and the 4th dividing plate 240；
The second sound attenuation hole is provided with 3rd dividing plate 230 and the 4th dividing plate 240.
It should be noted that in the prior art, on the 4th dividing plate 240 and two grades of escape pipes 220 one end of gas outlet it
Between distance be 108mm, the distance between the 3rd dividing plate 230 and the 4th dividing plate 240 be 100mm；And in embodiments of the present invention,
On 3rd dividing plate 230 and two grades of escape pipes 220, the distance between one end of gas outlet is 181mm, the 3rd dividing plate 230 and the 4th every
The distance between plate 240 is 70mm, and this kind of design can make secondary muffler 200 obtain significantly for the acoustical absorptivity of low-frequency range
The lifting of degree.
Further, the second sound attenuation hole includes big sound attenuation hole 241 and little sound attenuation hole 232, big sound attenuation hole 241 a diameter of
10mm, a diameter of 3mm of little sound attenuation hole 232, using sound attenuation hole of different sizes, can be carried out to the sound wave of different frequencies
Filter.
Further, on the 3rd dividing plate 230 or the 4th dividing plate 240, the quantity of big sound attenuation hole 241 is 9, little sound attenuation hole
232 quantity is 4.
It should be noted that the big quantity of sound attenuation hole 241 and the quantity of little sound attenuation hole 232 are not limited merely to the present embodiment
The quantity of offer, it is also possible to which the exhaust parameter according to different automobile types difference gas extraction system is set, and this present embodiment is not made
Limit.
Further, it is provided with secondary inlet pipe 210 on the 3rd sound attenuation hole 211, and secondary inlet pipe 210 and is provided with
The region of three sound attenuation holes 211 is arranged between the 3rd dividing plate 230 and the 4th dividing plate 240, it is possible thereby to filter out substantial amounts of high frequency
Section noise.
Further, acoustical cotton is additionally provided with secondary inlet pipe 210, and acoustical cotton is wrapped on secondary inlet pipe 210
The region of the 3rd sound attenuation hole 211 is provided with, such that it is able to further absorb the noise at the 3rd sound attenuation hole 211.
Fig. 5 is the noise transmission loss of one-level silencer provided in an embodiment of the present invention and one-level silencer in prior art
Comparison diagram, Fig. 6 are the noise transmission loss of secondary muffler provided in an embodiment of the present invention and secondary muffler in prior art
Comparison diagram.
As shown in figure 5, in the noise transmission loss song that the curve below coordinate system is one-level silencer 100 in prior art
Line, the curve above the coordinate system are the noise transmission loss curve of one-level silencer 100 provided in an embodiment of the present invention, in frequency
Rate is at 67Hz it is known that the noise transmission loss in one-level silencer 100 provided in an embodiment of the present invention is much larger than existing
Noise transmission loss in technology in one-level silencer 100, it can be seen that one-level silencer provided in an embodiment of the present invention
100 pairs eliminate low-frequency noise and can play more preferable effect.
As shown in fig. 6, in the noise transmission loss song that the curve below coordinate system is secondary muffler 200 in prior art
Line, the curve above the coordinate system are the noise transmission loss curve of secondary muffler provided in an embodiment of the present invention 200, in frequency
Rate is at 67Hz it is known that the noise transmission loss in secondary muffler provided in an embodiment of the present invention 200 is much larger than existing
Noise transmission loss in technology in secondary muffler 200, it can be seen that secondary muffler provided in an embodiment of the present invention
200 pairs eliminate low-frequency noise and can play more preferable effect.
Exhaust silencer assembly provided in an embodiment of the present invention, by arranging one-level silencer and secondary muffler, and will
Escape pipe in one-level silencer is set in air inlet pipe, and the air inlet pipe in secondary muffler and escape pipe are crisscross arranged, from
And automobile is achieved under full throttle operating mode, can effectively reduce the low-frequency noise caused at exhaust pipe mouth, improve driving
Comfort level.
Construction, feature and the action effect of the present invention, above institute are described in detail according to the embodiment shown in schema above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Want made change, or the Equivalent embodiments of equivalent variations are revised as, when still covered with diagram without departing from specification spiritual,
All should be within the scope of the present invention.
Claims (9)
1. a kind of exhaust silencer assembly, it is characterised in that include：
One-level silencer, the one-level silencer include one-level air inlet pipe and one-level escape pipe, and the one-level air inlet pipe is located in
In the one-level escape pipe, and with the gap for setting between the one-level escape pipe and the one-level air inlet pipe；
Secondary muffler, the secondary muffler include secondary inlet pipe and two grades of escape pipes, the secondary inlet pipe and described
Two grades of escape pipes be arranged in parallel, and the gas outlet of the secondary inlet pipe is near the gas outlet of two grades of escape pipes, and described two
The air inlet of level escape pipe is near the air inlet of the secondary inlet pipe.
2. exhaust silencer assembly according to claim 1, it is characterised in that the one-level silencer also include first every
Plate and second partition, one end that the one-level escape pipe is coordinated with the one-level air inlet pipe are arranged on first dividing plate and described
Between second partition；
The first sound attenuation hole is provided with first dividing plate and the second partition.
3. exhaust silencer assembly according to claim 1, it is characterised in that the secondary muffler also include the 3rd every
Plate and the 4th dividing plate, the secondary inlet pipe and two grades of escape pipes are respectively also cross the 3rd dividing plate and the described 4th
Dividing plate；
The second sound attenuation hole is provided with 3rd dividing plate and the 4th dividing plate.
4. exhaust silencer assembly according to claim 3, it is characterised in that the 4th dividing plate is given vent to anger with described two grades
On pipe, the distance between one end of gas outlet is 181mm；
The distance between 3rd dividing plate and the 4th dividing plate are 70mm.
5. exhaust silencer assembly according to claim 4, it is characterised in that second sound attenuation hole includes big sound attenuation hole
With little sound attenuation hole, a diameter of 10mm of the big sound attenuation hole, a diameter of 3mm of the little sound attenuation hole.
6. exhaust silencer assembly according to claim 5, it is characterised in that the quantity of the big sound attenuation hole is 9, institute
The quantity for stating little sound attenuation hole is 4.
7. exhaust silencer assembly according to claim 3, it is characterised in that be provided with the 3rd on the secondary inlet pipe
The region for being provided with the 3rd sound attenuation hole on sound attenuation hole, and the secondary inlet pipe is arranged on the 3rd dividing plate and described
Between four dividing plates.
8. exhaust silencer assembly according to claim 7, it is characterised in that be additionally provided with suction on the secondary inlet pipe
Sound cotton, and the acoustical cotton is wrapped on the secondary inlet pipe region for being provided with the 3rd sound attenuation hole.
9. exhaust silencer assembly according to claim 1, it is characterised in that the secondary muffler is provided with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010612.4A CN106481422A (en) | 2016-11-15 | 2016-11-15 | Exhaust silencer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010612.4A CN106481422A (en) | 2016-11-15 | 2016-11-15 | Exhaust silencer assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106481422A true CN106481422A (en) | 2017-03-08 |
Family
ID=58272356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611010612.4A Pending CN106481422A (en) | 2016-11-15 | 2016-11-15 | Exhaust silencer assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106481422A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050024162A (en) * | 2003-09-05 | 2005-03-10 | 현대자동차주식회사 | Muffler |
| KR20090013186U (en) * | 2008-06-20 | 2009-12-30 | 동원테크 주식회사 | Muffler for Automobile |
| KR20110136391A (en) * | 2010-06-15 | 2011-12-21 | 동원테크 주식회사 | Muffler for vehicle |
| CN102686840A (en) * | 2009-12-28 | 2012-09-19 | 丰田自动车株式会社 | Exhaust apparatus for internal combustion engine |
| CN202690186U (en) * | 2012-06-19 | 2013-01-23 | 南京海特汽车部件有限公司 | Silencer assembly |
| CN204082266U (en) * | 2014-08-27 | 2015-01-07 | 安徽江淮汽车股份有限公司 | A kind of automobile sound absorber assembly |
| CN105697103A (en) * | 2016-04-15 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Engine exhaust system silencer |
| CN105909343A (en) * | 2016-06-02 | 2016-08-31 | 韩群山 | Muffler of journey-increased type electric hybrid automobile |
-
2016
- 2016-11-15 CN CN201611010612.4A patent/CN106481422A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050024162A (en) * | 2003-09-05 | 2005-03-10 | 현대자동차주식회사 | Muffler |
| KR20090013186U (en) * | 2008-06-20 | 2009-12-30 | 동원테크 주식회사 | Muffler for Automobile |
| CN102686840A (en) * | 2009-12-28 | 2012-09-19 | 丰田自动车株式会社 | Exhaust apparatus for internal combustion engine |
| KR20110136391A (en) * | 2010-06-15 | 2011-12-21 | 동원테크 주식회사 | Muffler for vehicle |
| CN202690186U (en) * | 2012-06-19 | 2013-01-23 | 南京海特汽车部件有限公司 | Silencer assembly |
| CN204082266U (en) * | 2014-08-27 | 2015-01-07 | 安徽江淮汽车股份有限公司 | A kind of automobile sound absorber assembly |
| CN105697103A (en) * | 2016-04-15 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Engine exhaust system silencer |
| CN105909343A (en) * | 2016-06-02 | 2016-08-31 | 韩群山 | Muffler of journey-increased type electric hybrid automobile |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170308 |