CN103104384A - Motor air-inlet pipe, motor air-inlet system and automobile - Google Patents
Motor air-inlet pipe, motor air-inlet system and automobile Download PDFInfo
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- CN103104384A CN103104384A CN2011103556608A CN201110355660A CN103104384A CN 103104384 A CN103104384 A CN 103104384A CN 2011103556608 A CN2011103556608 A CN 2011103556608A CN 201110355660 A CN201110355660 A CN 201110355660A CN 103104384 A CN103104384 A CN 103104384A
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- tube
- air inlet
- engine air
- inlet tube
- engine
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Abstract
The invention provides a motor air-inlet pipe. The motor air-inlet pipe comprises an outer pipe (2) and an inner pipe (4), wherein a space exists between the pipe wall of the outer pipe (2) and the pipe wall of the inner pipe (4), and a plurality of inner pipe penetrated holes (5) are formed in the pipe wall of the inner pipe (4). The invention further provides a motor air-inlet system with the motor air-inlet pipe and an automobile with the motor air-inlet pipe. According to the motor air-inlet pipe, a special double-layer structure that a space exists between the outer pipe and the inner pipe is used, a sound insulation function is achieved through the space between the outer pipe and the inner pipe, noise in the motor air-inlet pipe is reduced significantly, the performance of the automobile such as noise vibration and harshness (NVH) performance is improved, and the ride comfortableness of the automobile is effectively improved.
Description
Technical field
The present invention relates to engine intake duct, particularly, relate to a kind of engine air inlet tube.In addition, the invention still further relates to a kind of engine aspirating system and automobile that comprises this engine air inlet tube.
Background technique
Motor is widely used on various machinery, especially on automobile.Along with the raising of people to the car comfort requirement in recent years, the automobile engineer has classified NVH (being noise, vibration, sound vibration roughness) as primary design and has considered key element, and wherein reducing noise is crucial designing requirement.On other engineering mechanical device (such as excavator, bulldozer etc.), it is also obviously favourable reducing noise.
The engine aspirating system noise is one of topmost noise source of automobile.The engine aspirating system noise mainly refers to the noise that produces in suction port place and suction tude, and this noise source is from the close together in compartment, and is very large on the formation impact of internal car noise.Wherein, when the engine aspirating system air inlet, air stream is through engine air inlet tube, because air stream speed is very fast, can there be friction between itself and suction tude tube wall, adds the turbulent flow of air stream itself etc., thereby can produce the noises such as vibration noise, frictional noise, radiated noise, these noises have accounted for the larger specific gravity of engine aspirating system noise, and the riding comfort of automobile is had considerable influence.Therefore, the noise in the reduction suction tude can improve the travelling comfort of automobile significantly.
In addition, develop rapidly along with engine technology, engine power improves greatly, the heat that produces is also more and more, cabin temperature increases, air can be heated the engine air inlet tube from suction port to engine intake manifold, this certainly will cause that intake temperature improves, it means that the air density that enters motor descends, air inflow is insufficient, thereby can cause smoke evacuation increase, power to descend, raise to the increase of cooling system heat dissipating capacity, engine temperature under certain driving cycle, have influence on the performances such as car load discharging, oil consumption, engine power.
Because the defects of prior art needs a kind of novel suction tude of design, to solve or to alleviate the defects of prior art suction tude.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of engine air inlet tube, and noise can be eliminated or reduce to this engine air inlet tube effectively when air inlet.
The further technical problem to be solved of the present invention is to provide a kind of engine air inlet tube, and this engine air inlet tube not only can effectively reduce when air inlet or eliminate pneumatic noise, and can guarantee that to a certain extent air inlet is abundant.
On this basis, technical problem to be solved by this invention is to provide a kind of engine aspirating system, and this engine aspirating system can reduce induction noise effectively.
In addition, the technical problem that the present invention also will solve is to provide a kind of automobile, and this automobile has significantly reduced internal car noise, thereby has riding comfort preferably.
In order to solve the problems of the technologies described above, the invention provides a kind of engine air inlet tube, wherein, this engine air inlet tube comprises outer tube and inner tube, have the interval between the tube wall of described outer tube and the tube wall of described inner tube, be formed with a plurality of inner perforated tubes on the tube wall of described inner tube.
Preferably, described outer tube and/or inner tube are formed by plastic materials or metallic material.
Preferably, be provided with the porosity soundproof material in the interval between described outer tube and inner tube.
Specifically selectively, described porosity soundproof material is sound insulation fiber, Sound-proof material, polyester sponge or polyethers sponge.
Further preferably, described porosity soundproof material becomes multilayer along the radial shape of described engine air inlet tube, and every layer is adopted different porosity soundproof materials.
More preferably, the outer surface of described outer tube is coated with the reflect heat layer.
Specifically selectively, described reflect heat layer is aluminium foil layer, copper foil layer or tinfoil paper layer.
On the basis of the engine air inlet tube of technique scheme, the invention provides a kind of engine aspirating system, wherein, the engine air inlet tube of technique scheme of the present invention is installed between the suction port of this engine aspirating system and intake manifold.
In addition, the present invention also provides a kind of automobile, comprises motor, and wherein, described motor has the above-mentioned engine aspirating system of root.
Pass through technique scheme, engine air inlet tube of the present invention comprises the double layer construction of the spaced outer tube of tool and inner tube, can effectively realize sound insulation function by the interval between this outer tube and inner tube, be formed with on inner pipe simultaneously a plurality of inner perforated tubes, jointly form silencing apparatus by the interval between this inner perforated tube and inner and outer pipe, thereby more effectively insulate against sound, eliminate the noise, reduce significantly the noise in engine air inlet tube.under further optimal way, in motor of the present invention, be provided with the porous soundproof material in interval between outer tube, thereby make the noise reduction of described engine air inlet tube better, in addition, the outer surface of described outer tube arranges the reflect heat layer, by this reflect heat layer and in, clearance space between outer tube and porosity soundproof material, engine air inlet tube of the present invention not only can reduce induction noise effectively, and can reduce or isolate the air stream transmission of heat in the suction tude in engine nacelle, this is for the NVH performance of for example automobile, discharging, oil consumption, the engine efficiency raising all has positive role, and significantly improved the riding comfort of automobile.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Description of drawings
Following accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of specification, and itself and following embodiment one are used from explanation the present invention, but protection scope of the present invention is not limited to following the drawings and the specific embodiments.In the accompanying drawings:
Fig. 1 is the sectional structure schematic diagram of the engine air inlet tube of the specific embodiment of the invention.
Description of reference numerals:
1 reflect heat layer; 2 outer tubes;
3 porosity soundproof materials; 4 inner tubes;
5 inner perforated tubes.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, should be understood that, embodiment described herein only is used for description and interpretation the present invention, and protection scope of the present invention is not limited to following embodiment.
Shown in Figure 1, engine air inlet tube of the present invention comprises outer tube 2 and inner tube 4, has the interval between the tube wall of the tube wall of its middle external tube 1 and inner tube 4, can be formed with a plurality of inner perforated tubes 5 on the tube wall of inner tube 4.
In technique scheme, described outer tube 2 and inner tube 4 can independently be processed separately, then mutual sheathing and being fixed together by corresponding fastening piece.Certainly, processing mode can have multiple, and it is not limited to aforesaid way.Wherein, outer tube 2 can be plastic materials, metallic material or other material that is fit to, and its two ends are used for the forward and backward pipeline assembly connection with engine aspirating system.Inner tube 4 also can for plastic materials, metallic material or other material that is fit to, be used for passing through air draught in inner tube 4.When outer tube 2 and inner tube 4 employing plastic materials, because plastic materials has sound-insulating and heat-insulating effect preferably, therefore can make the anti-acoustic capability of engine air inlet tube of the present invention better.
Has the interval between the outer tube 2 of the engine air inlet tube of technique scheme and inner tube 4, be to be formed with cavity between outer tube 2 and inner tube 4, this cavity can play the effect of effective isolation to the induction noise of inner tube 4 interior generations, this cavity has also played certain blocking effect to the transmission of temperature in addition.
And, under aforesaid way, being formed with a plurality of inner perforated tubes 5 on described inner tube 4, this inner perforated tube 5 coordinates the formation silencing apparatus with above-mentioned cavity, thereby effectively realizes the function of noise elimination noise reduction.Annotatedly be, coordinate with described cavity with regard to above-mentioned inner perforated tube 5 and form with regard to silencing apparatus, its noise elimination function that can realize is relevant with the formation area with the diameter of inner perforated tube 5, apparently, if the diameter of inner perforated tube 5 is less and the gross area is less, above-mentioned inner perforated tube 5 is equivalent to a known ground Helmholtz resonator muffler with the formed silencing apparatus of cavity, and a plurality of inner perforated tubes 5 are the connecting tube in the Helmholtz resonator muffler.If the diameter of inner perforated tube 5 is larger, its function is equivalent to an expansion muffler.
Preferably, be provided with porosity soundproof material 3 in the interval between described outer tube 2 and inner tube 4.Under this optimal way, by in the interval between outer tube 2 and inner tube 4, porosity soundproof material 3 being set, can strengthen better soundproof effect, and because the soundproof material 3 that arranges has porosity, therefore do not affect the noise elimination function of above-mentioned inner perforated tube 5 and the formed silencing apparatus of cavity, on the contrary, thus because it can strengthen soundproof effect by sound-absorbing.Specifically selectively, this porosity soundproof material can be sound insulation fiber, Sound-proof material, polyester sponge and polyethers sponge etc.In addition, apparently, this porosity soundproof material also can play certain heat-blocking action.For example, with regard to above-mentioned sound insulation fiber, it has lightweight, the acoustical absorbance properties that heat-resisting, thermal capacity is little, thermal conductivity is low and good.
In fact described porosity soundproof material 3 has formed dissipative muffler, the main absorbing high-frequency of dissipative muffler and the wider noise of frequency band, its principle is that air-flow passes through porous medium, sound comes back reflective between hole, the produce power loss is to reach the purpose of noise elimination.The dissipative muffler high frequency is eliminated the noise and to be depended on properties of materials, as the structure of material, hole diameter in material and the density of material etc.In concrete enforcement, can be according to the frequency range of the noise that will eliminate, select porosity soundproof material with proper characteristics, sound insulation lamination coating for example, reaching the purpose of noise elimination, and the sound insulation fiber has good heat-shielding performance performance equally.
In addition, according to the difference of eliminating the noise and requiring, described porosity soundproof material can become multilayer along the radial shape of described engine air inlet tube, every layer is adopted different porosity soundproof materials, thereby pass through the characteristic of the porosity soundproof material of different layers, realize the frequency of different noise eliminations and the effect of noise elimination.
Because temperature in engine compartment is higher, the circulation way of the heat that engine operation produces is mainly by radiation mode and air dielectric circulation way, wherein, for the heat of propagating by air dielectric, engine air inlet tube of the present invention can play effective iris action by means of the interval between outer tube 2 and inner tube 4 and the porosity soundproof material that preferably is arranged on this interval.In order to prevent making the air stream in engine air inlet tube be heated inadequately by the heat that radiation mode is propagated, preferably, the outer surface of described outer tube 2 is coated with reflect heat layer 1, thereby effectively plays the reflecting action to radiations heat energy.
Reflect heat layer 1 can have multiple, such as aluminium foil layer, copper foil layer, tinfoil paper layer etc., and the functions such as for example, with regard to aluminium foil, that aluminium foil has is heat insulation, waterproof, protection against the tide, aluminum foil material has remarkable heat preservation and insulation, can reflect away the radiation heat more than 93%.Aluminium foil is housed outside engine air inlet tube, can weakens greatly the transmission of the air of temperature in the suction tude in engine compartment, effectively reduce intake temperature.Certainly, reflect heat layer 1 is not limited to above-mentioned aluminium foil layer, copper foil layer, tinfoil paper layer etc., and for example reflect heat layer 1 can be also the formed coatings of some reflect heat coating, and reflect heat layer 1 can also adopt the material formation such as reflect heat glass for another example.In a word, as long as reflect heat layer 1 can play the effect of effective reflected radiation heat.
On the basis of above-mentioned engine air inlet tube technological scheme, the invention provides a kind of engine aspirating system, the engine air inlet tube that the above-mentioned arbitrary technological scheme of the present invention limits is installed between the suction port of this engine aspirating system and intake manifold.In addition, the present invention also provides a kind of automobile, and this automobile adopts above-mentioned engine aspirating system.Apparently, because above-mentioned engine aspirating system and automobile all adopt with good grounds engine air inlet tube of the present invention, so it has the above-mentioned noise reduction that engine air inlet tube of the present invention can realize, heat insulation technique effect equally.
Can be found out by upper description, engine air inlet tube of the present invention comprises the double layer construction of the spaced outer tube 2 of tool and inner tube 4, can effectively realize sound insulation function by the interval between this outer tube 2 and inner tube 4, and be formed with a plurality of inner perforated tubes 5 on inner tube 4, jointly form silencing apparatus by the interval between this inner perforated tube 5 and inner and outer pipe, thereby more effectively insulate against sound, eliminate the noise, reduce significantly the noise in engine air inlet tube.under further optimal way, in motor of the present invention, be provided with the porous soundproof material in interval between outer tube, thereby make the noise reduction of described engine air inlet tube better, in addition, the outer surface of described outer tube arranges the reflect heat layer, by this reflect heat layer and in, interval between outer tube and porosity soundproof material, engine air inlet tube of the present invention not only can reduce induction noise effectively, and can reduce or isolate the air stream transmission of heat in the suction tude in engine nacelle, this is for the NVH performance of for example automobile, discharging, oil consumption, the engine efficiency raising all has positive role, and significantly improved the riding comfort of automobile.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned mode of execution; in technical conceive scope of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.For example, can will change into molybdenum foil as the aluminium foil of reflect heat layer 1, this belongs to technical conceive of the present invention equally.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. engine air inlet tube, wherein, this engine air inlet tube comprises outer tube (2) and inner tube (4), has the interval between the tube wall of the tube wall of described outer tube (2) and described inner tube (4), is formed with a plurality of inner perforated tubes (5) on the tube wall of described inner tube (4).
2. engine air inlet tube according to claim 1, wherein, described outer tube (2) and/or inner tube (4) are formed by plastic materials or metallic material.
3. engine air inlet tube according to claim 1 and 2, wherein, be provided with porosity soundproof material (3) in the interval between described outer tube (2) and inner tube (4).
4. engine air inlet tube according to claim 3, wherein, described porosity soundproof material (3) is sound insulation fiber, Sound-proof material, polyester sponge or polyethers sponge.
5. engine air inlet tube according to claim 3, wherein, described porosity soundproof material (3) becomes multilayer along the radial shape of described engine air inlet tube, and every layer is adopted different porosity soundproof materials.
6. engine air inlet tube according to claim 3, wherein, the outer surface of described outer tube (2) is coated with reflect heat layer (1).
7. engine air inlet tube according to claim 6, wherein, described reflect heat layer (1) is aluminium foil layer, copper foil layer or tinfoil paper layer.
8. engine aspirating system, wherein, be equipped with the described engine air inlet tube of any one according to claim 1 to 7 between the suction port of this engine aspirating system and intake manifold.
9. automobile, comprise motor, and wherein, described motor has engine aspirating system according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110355660.8A CN103104384B (en) | 2011-11-10 | 2011-11-10 | Engine air inlet tube, engine aspirating system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110355660.8A CN103104384B (en) | 2011-11-10 | 2011-11-10 | Engine air inlet tube, engine aspirating system and automobile |
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| Publication Number | Publication Date |
|---|---|
| CN103104384A true CN103104384A (en) | 2013-05-15 |
| CN103104384B CN103104384B (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110355660.8A Active CN103104384B (en) | 2011-11-10 | 2011-11-10 | Engine air inlet tube, engine aspirating system and automobile |
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| Country | Link |
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| CN (1) | CN103104384B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321304A (en) * | 2016-11-25 | 2017-01-11 | 安徽江淮汽车集团股份有限公司 | Spiral air-intake pipeline |
| CN106555721A (en) * | 2016-11-17 | 2017-04-05 | 江苏星辰星汽车附件有限公司 | A kind of automobile NVH noise reduction air inlet pipe |
| CN111503410A (en) * | 2020-04-01 | 2020-08-07 | 西安交通大学 | Helmholtz type silencer |
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| CN1556895A (en) * | 2001-09-21 | 2004-12-22 | �����ɷ� | Engine intake manifold made of noise barrier composite material |
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| US20050150718A1 (en) * | 2004-01-09 | 2005-07-14 | Knight Jessie A. | Resonator with retention ribs |
| WO2005072474A2 (en) * | 2004-01-27 | 2005-08-11 | Emler Don R | Vehicle exhaust systems |
| JP2006002767A (en) * | 2004-06-14 | 2006-01-05 | Veritas Ag | Muffler |
| CN101113702A (en) * | 2006-07-28 | 2008-01-30 | 株式会社电装 | Air inlet |
| CN101153572A (en) * | 2006-09-29 | 2008-04-02 | 株式会社电装 | Air input device |
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2011
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1556895A (en) * | 2001-09-21 | 2004-12-22 | �����ɷ� | Engine intake manifold made of noise barrier composite material |
| CN1606657A (en) * | 2001-12-20 | 2005-04-13 | 美国柴油机燃气公司 | Fuel saving combustion engine insulation method and system |
| US20050150718A1 (en) * | 2004-01-09 | 2005-07-14 | Knight Jessie A. | Resonator with retention ribs |
| WO2005072474A2 (en) * | 2004-01-27 | 2005-08-11 | Emler Don R | Vehicle exhaust systems |
| JP2006002767A (en) * | 2004-06-14 | 2006-01-05 | Veritas Ag | Muffler |
| CN101113702A (en) * | 2006-07-28 | 2008-01-30 | 株式会社电装 | Air inlet |
| CN101153572A (en) * | 2006-09-29 | 2008-04-02 | 株式会社电装 | Air input device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555721A (en) * | 2016-11-17 | 2017-04-05 | 江苏星辰星汽车附件有限公司 | A kind of automobile NVH noise reduction air inlet pipe |
| CN106321304A (en) * | 2016-11-25 | 2017-01-11 | 安徽江淮汽车集团股份有限公司 | Spiral air-intake pipeline |
| CN111503410A (en) * | 2020-04-01 | 2020-08-07 | 西安交通大学 | Helmholtz type silencer |
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| Publication number | Publication date |
|---|---|
| CN103104384B (en) | 2015-11-18 |
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