CN205064145U - A wide band sound -attenuating structure for engine air intake system - Google Patents
A wide band sound -attenuating structure for engine air intake system Download PDFInfo
- Publication number
- CN205064145U CN205064145U CN201520789216.0U CN201520789216U CN205064145U CN 205064145 U CN205064145 U CN 205064145U CN 201520789216 U CN201520789216 U CN 201520789216U CN 205064145 U CN205064145 U CN 205064145U
- Authority
- CN
- China
- Prior art keywords
- chamber
- suction tude
- barrel
- noise elimination
- elimination structure
- 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.)
- Active
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model provides a wide band sound -attenuating structure for engine air intake system, include: the intake pipe, the section of thick bamboo wall that has the cylinder, section of thick bamboo wall has and link up a plurality of apertures of section of thick bamboo wall, with the cover body, follow the length direction of intake pipe extends the predetermined distance, and follow the circumferencial direction of section of thick bamboo wall is in cover on the partial circumference of section of thick bamboo wall section of thick bamboo wall, thereby by a section of thick bamboo wall with a cavity has been injectd to the cover body, wherein, a plurality of little pore size distributions are in a section of thick bamboo wall partial circumference on and with the cavity intercommunication. The utility model discloses a wide band sound -attenuating structure for engine air intake system sets up wide band sound -attenuating structure on the partial circumference through the radial direction of intake pipe at air intake system, under the prerequisite of avoiding dust and rainwater to invade, can arrange that reliability and durability are better relatively in a flexible way in irregular space, and the risk that acoustics was revealed is low, and the cost is relatively low.
Description
Technical field
The utility model relates to noise reduction field, particularly relates to a kind of wideband noise elimination structure for engine aspirating system.
Background technique
The noise (Nosise) of automobile, vibration (Vibration) and sound vibration roughness (Harshness) are referred to as the NVH characteristic of automobile, are key factors of measurement Automobile Design and workmanship.The gas handling system of automobile generally comprises air cleaner assy, air filter air inlet pipe, resonant cavity, engine charge flexible pipe etc., and it is an important constituent element in automobile, with remove enter motor air in contained suspended particulate impurity.Along with the raising of automotive performance, gas handling system, except meeting except fundamental function, also needs to consider NVH noise problem.
In order to obtain good NVH performance, the method that current people take mainly increases acoustic element on induction system line.Traditional acoustic element is generally resonant cavity, wavelength tube, woven tube.Wherein, noise reduction is it is preferred that woven tube, but woven tube often easily invades dust and rainwater due to the characteristic of himself, affects its usability.And resonant cavity is mainly used in eliminating Middle and low frequency noise, wavelength tube is mainly used in eliminating high-frequency noises, and the frequency band of both stress release treatment is all narrower, cannot cover enough bandwidth.Further, acoustic wave filter structure of the prior art is generally all surround suction tude in the radial direction in suction tude, and this adds enforcement difficulty when arrangement space is limited, and also very high to the requirement of its Surrounding Parts separated by gap.
Model utility content
The purpose of this utility model to provide a kind of wideband noise elimination structure effectively eliminating broad-band noise when arrangement space is limited to.
Especially, the utility model provides a kind of wideband noise elimination structure for engine aspirating system, comprising:
Suction tude, has columnar barrel, and described barrel has multiple apertures of through described barrel; With
Cover body, the length direction along described suction tude extends intended distance, and on the part-circular periphery of described barrel, covers described barrel along the circumferencial direction of described barrel, thus defines a chamber by described barrel and described cover body;
Wherein, described multiple aperture be distributed in described barrel part-circular periphery on and with described chamber.
Alternatively, also comprise at least one dividing plate, it is arranged in described chamber, and described chamber is separated into mutual disconnected multiple sub-chamber by the length direction along described suction tude.
Alternatively, at least Liang Ge sub-chamber in described multiple sub-chamber has different volumes.
Alternatively, the described aperture at least Liang Ge sub-chamber in described multiple sub-chamber has different distribution densities and/or aperture.
Alternatively, described multiple aperture is evenly distributed on the described barrel of described suction tude.
Alternatively, described cover body has the roof be positioned at above described chamber and be parallel to each other two sidewalls laterally surrounding described chamber and the antetheca be parallel to each other and rear wall.
Alternatively, the described roof of described cover body is in tilted layout along the relatively described suction tude of length direction of described suction tude.
Alternatively, the respective lower limb of described antetheca and described rear wall is formed as the circular arc that matches with the described barrel of described suction tude.
Alternatively, the resonant cavity be connected with described suction tude is also comprised.
Alternatively, the acoustical cotton be arranged in described suction tude is also comprised.
Wideband noise elimination structure of the present utility model, for the gas handling system of motor, by arranging wideband noise elimination structure on the part-circular periphery of the suction tude radial direction of gas handling system, under the prerequisite avoiding dust and rainwater to invade, can in Anomalistic space flexible arrangement, reliability and durability are relatively better, and the risk that acoustics is revealed is low, and advantage of lower cost.Meanwhile, the utility model matches by adopting wideband noise elimination structure resonant cavity, can eliminate the low frequency noise of single-frequency, can eliminate again the medium-high frequency noise of wide-band, substantially increase overall noise reduction.
According to hereafter by reference to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present utility model more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present utility model with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference character identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is the schematic perspective view of the wideband noise elimination structure according to the utility model embodiment;
Fig. 2 is the side view of the noise elimination structure of wideband shown in Fig. 1;
Fig. 3 is the structural representation of chamber 4 inside of the noise elimination structure of wideband shown in Fig. 1.
Embodiment
Fig. 1 is the structural representation of the wideband noise elimination structure according to the utility model embodiment, and it comprises suction tude 1 and cover body 2 in general manner.Suction tude 1 has columnar barrel 3, and it is through in whole gas handling system, and gas enters into motor thus.Cover body 2 extends certain distance at the length direction along suction tude 1, and on the part-circular periphery of barrel 3, covers barrel 3 along the circumferencial direction of barrel 3, thus defines a chamber 4 by barrel 3 and cover body 2.
Fig. 3 shows the structural representation of the chamber 4 of broadband muffler of the present utility model.Cover body 2 also has be parallel to each other two sidewalls 6 and the antetheca 7 be parallel to each other and rear wall 8 that are positioned at roof 5 above chamber 4 and laterally surround chamber 4.The respective lower limb of antetheca 7 and rear wall 8 is formed as the circular arc matched with the barrel 3 of suction tude 1.Barrel 3 also has multiple apertures 9 of through barrel 3, the part-circular periphery that multiple aperture 9 is distributed in barrel 3 is connected with chamber 4, thus form noise elimination structure.Usually, this noise elimination structure can eliminate the noise that frequency is 700Hz ~ 1400Hz, can obtain good soundproof effect in wider frequency band range.It should be noted that, aperture 9 is distributed in barrel 3 outside and is coated with on the barrel 3 of cover body 2.
In an embodiment of the present utility model, as shown in Figure 3, be also provided with a dividing plate 10 in chamber 4, chamber 4 is separated into disconnected first sub-chamber 11 and the second sub-chamber 12 mutually by its length direction along suction tude 1.First has different volumes from chamber 11 and the second sub-chamber 12, wherein, has 26 apertures 9, have 18 apertures 9 in the second sub-chamber 12 of small volume in the first sub-chamber 11 that volume is larger.Aperture 9 is evenly distributed on the barrel 3 of suction tude 1, and usually, the aperture of aperture 9 is preferably at 1mm ~ 5mm.
In other unshowned embodiments of the present utility model, be also provided with multiple dividing plate 10 in chamber 4, chamber 4 is separated into mutual disconnected multiple sub-chamber 13 along the length direction of suction tude 1 by multiple dividing plate 10.Have at least the volume of Liang Ge sub-chamber 13 to be not identical in multiple sub-chamber 13, thus, aperture 9 number in multiple sub-chamber 13 is also incomplete same.
In another unshowned embodiment of the present utility model, the aperture 9 at least Liang Ge sub-chamber 13 in multiple sub-chamber 13 has different distribution densities or has different apertures.Be understandable that, the aperture 9 at least Liang Ge sub-chamber 13 in multiple sub-chamber 13 can also have different distribution densities and aperture.It should be noted that, here the distribution density of said aperture 9 and aperture mainly obtain according to punching rate, and the punching rate that different noise frequencies is corresponding different, therefore as required the aperture 9 in multiple sub-chamber 13 can be designed to multiple different pattern.
In another embodiment of the present utility model, with reference to figure 2, the roof 5 of cover body 2 is in tilted layout along the relative suction tude 1 of length direction of suction tude 1, and this mainly sets according to the size in actual arrangement space.Distance between the top edge of the antetheca 7 of cover body 2 and lower limb is less, and its top edge is close in the barrel 3 of suction tude 1.This can flexible arrangement when arrangement space is limited.
In an embodiment of the present utility model, with reference to figure 1, also comprise the resonant cavity 14 be connected with suction tude 1, it is arranged in the side of suction tude 1, resonant cavity 1 is connected with suction tude 14, and for eliminating the low-frequency noise of single-frequency, general resonant cavity 14 eliminates the noise that frequency is 210Hz.
In an embodiment of the present utility model, with reference to figure 2, also comprise the acoustical cotton 15 be arranged in suction tude 1, the noise reduction of gas handling system can be improved so further.
In aforementioned multiple embodiment, as shown in Figure 1, the surface of cover body 2 is also provided with multiple stiffening rib 16 for strengthening its surface strength, and cover body 2 can be prevented like this not to be twisted or to damage and affect noise reduction in the space of limitation.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present utility model is illustrate and described herein detailed, but, when not departing from the utility model spirit and scope, still can directly determine or derive other modification many or amendment of meeting the utility model principle according to content disclosed in the utility model.Therefore, scope of the present utility model should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1., for a wideband noise elimination structure for engine aspirating system, it is characterized in that, comprising:
Suction tude, has columnar barrel, and described barrel has multiple apertures of through described barrel; With
Cover body, the length direction along described suction tude extends intended distance, and on the part-circular periphery of described barrel, covers described barrel along the circumferencial direction of described barrel, thus defines a chamber by described barrel and described cover body;
Wherein, described multiple aperture be distributed in described barrel part-circular periphery on and with described chamber.
2. wideband noise elimination structure according to claim 1, is characterized in that, also comprises at least one dividing plate, and it is arranged in described chamber, and described chamber is separated into mutual disconnected multiple sub-chamber by the length direction along described suction tude.
3. wideband noise elimination structure according to claim 2, is characterized in that, at least Liang Ge sub-chamber in described multiple sub-chamber has different volumes.
4. wideband noise elimination structure according to claim 3, is characterized in that, the described aperture at least Liang Ge sub-chamber in described multiple sub-chamber has different distribution densities and/or aperture.
5. wideband noise elimination structure according to claim 1, is characterized in that, described multiple aperture is evenly distributed on the described barrel of described suction tude.
6. wideband noise elimination structure according to claim 1, is characterized in that, described cover body has the roof be positioned at above described chamber and be parallel to each other two sidewalls laterally surrounding described chamber and the antetheca be parallel to each other and rear wall.
7. wideband noise elimination structure according to claim 6, is characterized in that, the described roof of described cover body is in tilted layout along the relatively described suction tude of length direction of described suction tude.
8. wideband noise elimination structure according to claim 6, is characterized in that, the respective lower limb of described antetheca and described rear wall is formed as the circular arc matched with the described barrel of described suction tude.
9. wideband noise elimination structure according to claim 1, is characterized in that, also comprises the resonant cavity be connected with described suction tude.
10. the wideband noise elimination structure according to any one of claim 1-9, is characterized in that, also comprises the acoustical cotton be arranged in described suction tude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789216.0U CN205064145U (en) | 2015-10-13 | 2015-10-13 | A wide band sound -attenuating structure for engine air intake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520789216.0U CN205064145U (en) | 2015-10-13 | 2015-10-13 | A wide band sound -attenuating structure for engine air intake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064145U true CN205064145U (en) | 2016-03-02 |
Family
ID=55390711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520789216.0U Active CN205064145U (en) | 2015-10-13 | 2015-10-13 | A wide band sound -attenuating structure for engine air intake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578183A (en) * | 2017-09-28 | 2019-04-05 | 长城汽车股份有限公司 | Engine air inlet tube and engine aspirating system |
| US10968876B2 (en) | 2018-01-16 | 2021-04-06 | Ford Global Technologies, Llc | Engine air intake duct with orifice cap and manufacture thereof |
-
2015
- 2015-10-13 CN CN201520789216.0U patent/CN205064145U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578183A (en) * | 2017-09-28 | 2019-04-05 | 长城汽车股份有限公司 | Engine air inlet tube and engine aspirating system |
| US10968876B2 (en) | 2018-01-16 | 2021-04-06 | Ford Global Technologies, Llc | Engine air intake duct with orifice cap and manufacture thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104234890A (en) | High-frequency muffler used on automobile intercooler intake pipe | |
| CN204163804U (en) | Automobile exhaust pipe baffler | |
| CN106121881A (en) | High frequency acoustic filter in vehicle intercooler air inlet pipe | |
| CN205064145U (en) | A wide band sound -attenuating structure for engine air intake system | |
| CN105569775A (en) | Exhaust muffler and vehicle with same | |
| CN201461034U (en) | Exhaust silencer for light-weight cars | |
| CN206419135U (en) | Multi-cavity resonance exhaust silencer | |
| CN104989494A (en) | Multicavity resonance muffler | |
| CN102367791A (en) | Intake silencer used in air compressor of light truck pneumatic brake system | |
| CN206522207U (en) | air filter assembly | |
| CN103195549B (en) | A kind of silencer muffler partition plate and silencing apparatus | |
| CN210217866U (en) | Silencer and vehicle | |
| CN214616823U (en) | Adjustable frequency air inlet silencer and vehicle | |
| CN205225522U (en) | Engine and noise eliminator | |
| CN207634217U (en) | Intake muffler and diesel fork lift truck | |
| CN202789047U (en) | Back-stage muffler for auto vent-pipes | |
| CN204436545U (en) | Light truck muffler for internal combustion engine | |
| CN203035309U (en) | Gasoline engine muffler | |
| CN109737066B (en) | Air compressor noise eliminator for fuel cell | |
| CN208364271U (en) | A kind of noise reduction resonator device for reducing car inside noise | |
| CN204827726U (en) | Car and be used for air cleaner of car | |
| CN204419303U (en) | The variable noise elimination air-strainer of a kind of integral type multi-frequency | |
| CN207686792U (en) | A kind of automobile-used impedance composite clampshell silencer | |
| Mimani et al. | Design of large reactive silencers for industrial applications | |
| CN106468211A (en) | Automobile, electromotor, the acoustic filter located at supercharger gas outlet and forming method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |