CN207647651U - A kind of muffler and engine air inlet tube - Google Patents
A kind of muffler and engine air inlet tube Download PDFInfo
- Publication number
- CN207647651U CN207647651U CN201721563114.2U CN201721563114U CN207647651U CN 207647651 U CN207647651 U CN 207647651U CN 201721563114 U CN201721563114 U CN 201721563114U CN 207647651 U CN207647651 U CN 207647651U
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- inner cylinder
- outer barrel
- regulating device
- resonant cavity
- horizontal bush
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Abstract
The utility model provides a kind of muffler and engine air inlet tube, is related to engine art.Muffler includes inner cylinder, outer barrel and regulating device.Inner cylinder is tubular structure, has opposite inlet end and outlet side, multiple sound attenuation holes are equipped at the tube wall of the inner cylinder between inlet end and outlet side.Outer barrel is fixedly installed in the outside of inner cylinder, matches to form resonant cavity with inner cylinder, and sound wave enters resonant cavity by sound attenuation hole caused by the gas flowed through in inner cylinder.Regulating device is nested in the outside of inner cylinder, is matched with outer barrel to form the adjusting cavity of a relatively independent annular in resonant cavity, sound wave is prevented to enter adjusting cavity.Regulating device along the axis direction of inner cylinder by doing piston motion to adjust the volume of resonant cavity and the quantity of sound attenuation hole.The structure can ensure the case where induction noise and intake resistance when verification resonant cavity volume and noise elimination hole number are all different in the case of same air inlet pipe, eliminate disturbance variable, ensure that verification is reliable.
Description
Technical field
The utility model is related to engine arts, more particularly to a kind of muffler and engine air inlet tube.
Background technology
Gas handling system is an important component part in automobile, is used for equably supplying air to each cylinder of engine
With fuel mixture or pure air.Engine air inlet tube is mainly used to that gas is guided to enter cylinder.But with automobile industry
Development, gas handling system is other than needing to meet basic function, it is also necessary to the problems such as considering noise, intake resistance.
Existing common intake noise reduction structure uses resistant noise-reducing principle：Using refraction of the sound wave in resonant cavity and instead
Inject row noise reduction.Resonant cavity forms confined space by partition board, and reflection and interference constantly occur when sound wave is propagated in resonant cavity
Energy is consumed, noise is finally eliminated.
Air inlet pipe is respectively induction noise and intake resistance to the two big performance indicators that vehicle affects greatly, the two
Index influences each other, is mutually contradictory.Such as above-mentioned existing common noise elimination structure, more sound attenuation hole or resonant cavity are designed, it is right
Induction noise has certain promotion (noise reduction is favourable), but intake resistance can be made to increase, and influences vehicle dynamic property economy.
In order to make induction noise and intake resistance reach an optimal balance point, software point is mainly utilized in the prior art
Analysis is distinguished with providing the air inlet pipe of a variety of different resonant cavity volumes and/or different noise elimination hole numbers on rack or vehicle one by one
It is verified.But since the air inlet pipe that different schemes use is different, the variable being related to is more, so often verifying
Failure, inefficiency situation；And kinds of schemes parallel proof cost is larger, the period is longer.
Utility model content
One purpose of the utility model is to provide for a kind of muffler, to solve in the prior art in design resonant cavity
In the process, due to leading to problems such as the variable that is related to verify, crash rate is high, verification cost is big, the period is long more.
The utility model one is further objective is that will so that muffler easily adjusts appearance and degree of regulation is high.
Particularly, the utility model provides a kind of muffler, for finding induction noise and intake resistance equalization point, wraps
It includes：
Inner cylinder, tubular structure have opposite inlet end and outlet side, the institute between the inlet end and the outlet side
It states and is equipped with multiple sound attenuation holes at the tube wall of inner cylinder；
Outer barrel is coaxially fixedly installed in the outside of the inner cylinder, matches to form resonant cavity with the inner cylinder, the inner cylinder
Sound wave caused by the gas inside flowed through enters the resonant cavity by the sound attenuation hole；With
Regulating device, is nested in the outside of the inner cylinder, and the regulating device is matched with the outer barrel with described total
Intracavitary of shaking forms a relatively independent annular and adjusts cavity, prevents the sound wave from entering the adjusting by the regulating device
Cavity；
Wherein, the regulating device along the axis direction of the inner cylinder by doing piston motion to adjust the resonant cavity
The quantity of volume and the sound attenuation hole.
Optionally, the regulating device includes：
The horizontal bush being movably nested on the outside of the inner cylinder, the horizontal bush can covering part sound attenuation hole to hinder
Only the sound wave enters the adjusting cavity；With
The annular baffle extended along the horizontal bush radial direction, the inner ring of the annular baffle are nested in the level
The outside of sleeve, the outer ring of the annular baffle are contacted with the inner wall sealing of the outer barrel, and the annular baffle prevents the sound
Wave enters the adjusting cavity.
Optionally, further include driving device for driving the regulating device.
Optionally, the horizontal bush and the annular baffle integrated molding, the annular baffle is by the horizontal set
The edge of cylinder, which is radially bent, to be extended.
Optionally, one end of the outer barrel is nested in the outside of the horizontal bush, the outer barrel and the horizontal bush
It can in axial direction relatively move.
Optionally, the outer wall of the horizontal bush is equipped with the loose slot of groove type, and one end of the outer barrel is nested in described
At loose slot.
Optionally, the outer wall of the horizontal bush is connected through a screw thread with the outer barrel.
Optionally, the inner wall of the outer barrel is connected through a screw thread with the annular baffle.
Optionally, the horizontal bush further includes for measuring the measuring device for adjusting cavity volume.
Optionally, the annular baffle is nested in edge of the horizontal bush close to the one end at the inner cylinder center.
Particularly, the utility model additionally provides a kind of engine air inlet tube, including muffler recited above.
The muffler and engine air inlet tube of the utility model, are improved in the structure of existing muffler, increase by one
A regulating device, the regulating device adjust the volume of resonant cavity and the quantity of sound attenuation hole by doing piston motion, to ensure
Induction noise when verification resonant cavity volume and noise elimination hole number are all different in the case of same air inlet pipe and intake resistance
The case where, disturbance variable is eliminated, ensure that verification is reliable.
Further, the structure of the muffler is simple, easy to operate, has not only saved cost, also improves efficiency.
Further, the regulating device of the utility model also carries measuring device, can accurately measure the resonant cavity
Volume and sound attenuation hole quantity, it is ensured that the accuracy of data.
According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more
Add the above-mentioned and other purposes, advantages and features of clear the utility model.
Description of the drawings
Some specific realities of the utility model are described in detail by way of example rather than limitation with reference to the accompanying drawings hereinafter
Apply example.Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that
The drawings are not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of engine air inlet tube in the prior art；
Fig. 2 is the schematic cross sectional views of the cutting line A-A interceptions in Fig. 1；
Fig. 3 is the schematic diagram of the muffler of one embodiment according to the present utility model；
Fig. 4 be one embodiment according to the present utility model muffler in regulating device schematic diagram.
Reference numeral in figure is：
1- silencers, 2- engine air inlet tubes；
11- inner cylinders, 12- outer barrels, 13- regulating devices, 14- resonant cavities, 15- adjust cavity, 18- inlet ends, 19- outlets
End, 111- sound attenuation holes, 131- horizontal bush, 132- annular baffles, 133- loose slots.
Specific implementation mode
Fig. 1 is the schematic diagram of engine air inlet tube in the prior art.As shown in Figure 1, engine air inlet tube 2 includes
At least one muffler 1.Gas handling system is an important component part in automobile, is used for equably to each cylinder of engine
Supply air and fuel mixture or pure air.Engine air inlet tube 2 is mainly used to that gas is guided to enter cylinder, arrow in Fig. 1
Direction shown in head is engine charge direction.But with the development of automobile industry, gas handling system is in addition to needing to meet basic training
It can be outer, it is also necessary to the problems such as considering noise, intake resistance.
Fig. 2 is the schematic cross sectional views of the cutting line A-A interceptions in Fig. 1.As shown in Fig. 2, existing common air inlet disappears
Acoustic form uses resistant noise-reducing principle：Noise reduction is carried out using refraction of the sound wave in resonant cavity 14 and reflection.It is shown in Fig. 2
Muffler 1 has inlet end 18 and outlet side 19, outer barrel 12 and inner cylinder 11 is provided between inlet end 18 and outlet side 19, outside
Closed resonant cavity 14 is formed between cylinder 12 and inner cylinder 11, the peripheral wall of inner cylinder 11 is equipped with sound attenuation hole, the gas flowed through in inner cylinder 11
Reflection and interference consumption energy constantly occur when the sound wave that body generates is propagated in resonant cavity 14, finally eliminates noise.
Engine air inlet tube is respectively induction noise and intake resistance to the two big performance indicators that vehicle affects greatly,
The two indexs influence each other, are mutually contradictory.Existing common noise elimination structure as depicted in figs. 1 and 2, designs more disappear
Acoustic aperture 111 or resonant cavity have certain promotion (noise reduction is favourable) to induction noise, but intake resistance can be made to increase, and influence whole
Vehicle dynamic property economy.
In order to make induction noise and intake resistance reach an optimal balance point, software point is mainly utilized in the prior art
Analysis, to provide the air inlet pipe of 111 quantity of a variety of different resonant cavity volumes and/or different sound attenuation holes, on rack or vehicle one by one
It is verified respectively.But since the air inlet pipe that different schemes use is different, the variable being related to is more, so often occurring
Verification failure, inefficiency situation；And kinds of schemes parallel proof cost is larger, the period is longer.
In view of the above-mentioned problems, particularly, applicant in fig. 2 shown in done on the basis of muffler and further changed
Into for finding induction noise and intake resistance equalization point, various working can be adapted to, reduce variable.
Fig. 3 is the schematic diagram of the muffler 1 of one embodiment according to the present utility model.As shown in figure 3, this reality
A kind of Novel muffler 1, including inner cylinder 11, outer barrel 12 and regulating device 13 are provided with novel.Inner cylinder 11 is tubular structure, tool
There are opposite inlet end and outlet side, multiple sound attenuation holes 111 are equipped at the outer wall of the inner cylinder between inlet end and outlet side.Outer barrel
The 12 coaxial outsides for being fixedly installed in inner cylinder 11, match to form resonant cavity 14 with inner cylinder 11, the gas institute flowed through in inner cylinder 11
The sound wave of generation enters resonant cavity 14 by sound attenuation hole 111.Regulating device 13 is nested in the outside of inner cylinder 11, regulating device 13 with
Outer barrel 12 is matched to form the adjusting cavity 15 of a relatively independent annular in resonant cavity, and regulating device 13 prevents sound wave
Into adjusting cavity 15.Regulating device 13 along the axis direction of inner cylinder 11 by doing piston motion to adjust the volume of resonant cavity 14
With the quantity of sound attenuation hole 111.
The muffler 1 of the utility model, is improved in the structure of existing muffler, increases a regulating device 13,
Regulating device 13 adjusts the quantity of the volume and sound attenuation hole 111 of resonant cavity by doing piston motion, to ensure in same air inlet
The case where induction noise and intake resistance when resonant cavity volume and 111 quantity of sound attenuation hole are all different are verified in the case of pipe,
Disturbance variable is eliminated, ensure that verification is reliable.
Fig. 4 be one embodiment according to the present utility model muffler 1 in regulating device 13 schematic diagram.Such as
Shown in Fig. 4, in one embodiment of the utility model, regulating device 13 includes horizontal bush 131 and annular baffle 132.Water
Flat sleeve 131 is movably nested in the outside of inner cylinder 11, horizontal bush 131 can covering part sound attenuation hole 111 with prevent sound wave into
Enter to adjust cavity 15.Horizontal bush 131 is nested in the outside of inner cylinder 11, has not only saved space, it is ensured that resonant cavity 14
Air-tightness.Horizontal bush 131 is by the sliding along its axial direction, to seal or open sound attenuation hole 111.Horizontal bush 131 exists
It after being nested in 11 outside of inner cylinder, needs just it can be made to move in the axial direction with external force, and because of acoustic wave vibrations or can not set
Standby vibrations can make adjusting apparatus generate displacement.Annular baffle 132 is configured to extend along 131 radial direction of horizontal bush, cyclic annular
The inner ring of partition board 132 is nested in the outside of horizontal bush 131, and the outer ring of annular baffle 132 is contacted with the inner wall sealing of outer barrel 12,
Annular baffle 132 prevents sound wave from entering and adjusts cavity 15.
Using the muffler 1 of the utility model, the structure for redesigning muffler can not had to, it is only necessary in 11 He of inner cylinder
Increase a regulating device 13 with above structure between outer barrel 12, different resonant cavity volumes can be verified in same air inlet pipe
And the induction noise and intake resistance of 111 quantity lower inlet duct of sound attenuation hole, optimal value is selected according to test data, ensures single change
Verification under amount is reliable, and such structure is not only cost-effective, also improves conventional efficient.
In order to further decrease manufacturing cost, conventional efficient is improved, horizontal bush 131 is melted into 132 one of annular baffle
Type, annular baffle 132 is radially bent by the edge of horizontal bush 131 to be extended.
In order to ensure that the leakproofness for adjusting cavity 15 is good, easy to adjust, one end of outer barrel 12 is nested in horizontal bush 131
Outside, outer barrel 12 and horizontal bush 131 can be relatively moved along the axial direction of horizontal bush 131.Outer barrel 12 and horizontal bush
The material of good airproof performance can be used in 131 places being in contact.
In order to limit the size for adjusting cavity 15, the outer wall of horizontal bush 131 is equipped with the loose slot of groove type, outer barrel 12
One end is nested in loose slot.When outer wall is respectively at the both ends of loose slot, adjust cavity 15 be respectively provided with maximum volume and
Minimum volume.User of service can be by pushing regulating device 13 to adjust the size of adjusting cavity 15 axially movable.
In another embodiment of the utility model, outer wall and the outer barrel 12 of horizontal bush 131 are connected through a screw thread.It is logical
Rotation adjustment device 13 is crossed to realize the change for adjusting cavity 15, and then changes the size of resonant cavity 14 and making for sound attenuation hole 111
Use quantity.
In the another embodiment of the utility model, inner wall and the annular baffle 132 of outer barrel 12 are connected through a screw thread.
In order to improve accuracy, horizontal bush 131 further includes for measuring the measuring device for adjusting 15 volume of cavity.It measures
Device can be the graduated scale being mounted in loose slot, can also be the laser displacement sensor or electricity being installed at resonant cavity 14
Sense formula analog sensor.
In the other embodiment of the utility model, in order to further increase accuracy, muffler 1 can also further include using
In the driving device (not shown) of drive adjusting device 13.Driving device can be motor or hydraulic motor.
In order to ensure that regulating device 13 is not subjected to displacement during the test, muffler 1 is also provided with a positioning
Device (not shown).Positioning device can be positioning pin on muffler 1 and with the matched positioning of positioning pin
Slot.Positioning device can also be that fastener regulating device 13 being fixed on inner cylinder, fastener are an adjustable fastening
Circle, tight loop are centered around on the outside of regulating device.
Particularly, the utility model additionally provides a kind of engine air inlet tube, including the noise reduction described in above example
Device.
So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein
A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model
The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The range of type is understood that and regards as to cover other all these variations or modifications.
Claims (10)
1. a kind of muffler, for finding induction noise and intake resistance equalization point, which is characterized in that including：
Inner cylinder, tubular structure have opposite inlet end and outlet side, described interior between the inlet end and the outlet side
Multiple sound attenuation holes are equipped at the tube wall of cylinder；
Outer barrel is coaxially fixedly installed in the outside of the inner cylinder, matches to form resonant cavity with the inner cylinder, stream in the inner cylinder
Sound wave caused by the gas of warp enters the resonant cavity by the sound attenuation hole；With
Regulating device, is nested in the outside of the inner cylinder, and the regulating device is matched with the outer barrel in the resonant cavity
It is interior to form a relatively independent annular adjusting cavity, prevent the sound wave from entering the adjusting by the regulating device empty
Chamber；
Wherein, the regulating device along the axis direction of the inner cylinder by doing piston motion to adjust the volume of the resonant cavity
With the quantity of the sound attenuation hole.
2. muffler according to claim 1, which is characterized in that the regulating device includes：
The horizontal bush being movably nested on the outside of the inner cylinder, the horizontal bush can covering part sound attenuation hole to prevent
It states sound wave and enters the adjusting cavity；With
The annular baffle extended along the horizontal bush radial direction, the inner ring of the annular baffle are nested in the horizontal bush
Outside, the outer ring of the annular baffle contacts with the inner wall sealing of the outer barrel, the annular baffle prevent the sound wave into
Enter the adjusting cavity.
3. muffler according to claim 1, which is characterized in that further include for driving the driving of the regulating device to fill
It sets.
4. muffler according to claim 2, which is characterized in that the horizontal bush is integrally melted into the annular baffle
Type, the annular baffle is radially bent by the edge of the horizontal bush to be extended.
5. muffler according to claim 2, which is characterized in that one end of the outer barrel is nested in the horizontal bush
Outside, the outer barrel can be relatively moved in axial direction with the horizontal bush.
6. muffler according to claim 5, which is characterized in that the outer wall of the horizontal bush is equipped with the activity of groove type
One end of slot, the outer barrel is nested at the loose slot.
7. muffler according to claim 5, which is characterized in that the outer wall of the horizontal bush passes through spiral shell with the outer barrel
Line connects.
8. muffler according to claim 5, which is characterized in that the inner wall of the outer barrel passes through spiral shell with the annular baffle
Line connects.
9. muffler according to claim 2, which is characterized in that the horizontal bush further includes for measuring the adjusting
The measuring device of cavity volume.
10. a kind of engine air inlet tube, which is characterized in that including the muffler described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563114.2U CN207647651U (en) | 2017-11-21 | 2017-11-21 | A kind of muffler and engine air inlet tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563114.2U CN207647651U (en) | 2017-11-21 | 2017-11-21 | A kind of muffler and engine air inlet tube |
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| Publication Number | Publication Date |
|---|---|
| CN207647651U true CN207647651U (en) | 2018-07-24 |
Family
ID=62889533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721563114.2U Active CN207647651U (en) | 2017-11-21 | 2017-11-21 | A kind of muffler and engine air inlet tube |
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| Country | Link |
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| CN (1) | CN207647651U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236514A (en) * | 2018-11-22 | 2019-01-18 | 重庆工业职业技术学院 | A kind of adaptive intake muffler |
| CN109488495A (en) * | 2018-10-18 | 2019-03-19 | 北京汽车股份有限公司 | Silencing apparatus and vehicle |
| CN109736983A (en) * | 2018-12-29 | 2019-05-10 | 宝鸡吉利发动机有限公司 | A kind of noise elimination structure of engine air recirculating line |
| CN110006533A (en) * | 2019-04-11 | 2019-07-12 | 中国航发湖南动力机械研究所 | For inhibiting the device and radiation pyrometer of radiation source dimensional effect |
| CN110397528A (en) * | 2019-07-29 | 2019-11-01 | 浙江吉利新能源商用车集团有限公司 | Sound-attenuating system, sound reduction method and vehicle for air inlet system and exhaust system |
-
2017
- 2017-11-21 CN CN201721563114.2U patent/CN207647651U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488495A (en) * | 2018-10-18 | 2019-03-19 | 北京汽车股份有限公司 | Silencing apparatus and vehicle |
| CN109236514A (en) * | 2018-11-22 | 2019-01-18 | 重庆工业职业技术学院 | A kind of adaptive intake muffler |
| CN109236514B (en) * | 2018-11-22 | 2020-02-28 | 重庆工业职业技术学院 | Self-adaptive air inlet silencer |
| CN109736983A (en) * | 2018-12-29 | 2019-05-10 | 宝鸡吉利发动机有限公司 | A kind of noise elimination structure of engine air recirculating line |
| CN110006533A (en) * | 2019-04-11 | 2019-07-12 | 中国航发湖南动力机械研究所 | For inhibiting the device and radiation pyrometer of radiation source dimensional effect |
| CN110397528A (en) * | 2019-07-29 | 2019-11-01 | 浙江吉利新能源商用车集团有限公司 | Sound-attenuating system, sound reduction method and vehicle for air inlet system and exhaust system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220324 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: Zhejiang liankong Technology Co., Ltd Address before: 315336 818 Binhai two road, Hangzhou Bay New District, Ningbo, Zhejiang Patentee before: GEELY AUTOMOBILE RESEARCH INSTITUTE (NINGBO) Co.,Ltd. Patentee before: Zhejiang Geely Holding Group Co., Ltd |
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| TR01 | Transfer of patent right |