CN110685837A - Engine intake manifold entry noise reduction structure - Google Patents
Engine intake manifold entry noise reduction structure Download PDFInfo
- Publication number
- CN110685837A CN110685837A CN201910837472.5A CN201910837472A CN110685837A CN 110685837 A CN110685837 A CN 110685837A CN 201910837472 A CN201910837472 A CN 201910837472A CN 110685837 A CN110685837 A CN 110685837A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- intake manifold
- inlet
- net
- sound absorption
- 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
- 238000010521 absorption reaction Methods 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 239000011490 mineral wool Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000011491 glass wool Substances 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
An object of the present invention is to provide an engine intake manifold inlet noise reduction structure, comprising: the engine is provided with an inlet of an air inlet manifold, the air inlet manifold with one end communicated with the inlet of the air inlet manifold, a noise reduction net and a sound absorption and noise reduction block arranged on the outer side wall of one end of the air inlet manifold; the shape of the noise reduction net is a circular crown shape with the radius equal to the radius of the inlet of the intake manifold; the noise reduction net is positioned at the inner side of the inlet of the intake manifold and is connected with the inner side of the inlet of the intake manifold in a surrounding way; the sound absorption and noise reduction block is made of mineral wool, glass wool and polyester fiber sound absorption boards. According to the engine intake manifold inlet noise reduction structure, the inner side of the intake manifold inlet is provided with the noise reduction net in a circular crown shape, the outer side of one end of the intake manifold is provided with the sound absorption and noise reduction block which is favorable for sound absorption and noise reduction, turbulence can not be generated when high-speed airflow enters the intake manifold inlet from the intake manifold, and the noise is small.
Description
Technical Field
The invention relates to the field of automobile power systems, in particular to a noise reduction structure for an inlet of an engine intake manifold.
Background
Automobiles are increasingly popular and growing as a main vehicle, and thus environmental pollution caused by automobile noise is also reflected most. The noise generated by the engine in the automobile noise accounts for a large part, and the intake noise generated by pressure fluctuation caused by the periodic opening and closing of the intake valve of the engine and the high-speed airflow flowing through the intake valve channel in the intake process is one of the noise sources, and has important significance in controlling and optimizing the noise. The engine is provided with an inlet manifold communicated with an inlet valve; when high-speed airflow enters an inlet of an intake manifold from the intake manifold, the defect that turbulence is generated to cause larger noise exists, so that the noise reduction structure for the inlet of the intake manifold of the engine, which can not generate turbulence and has smaller noise when the high-speed airflow enters the inlet of the intake manifold from the intake manifold, is designed.
Disclosure of Invention
The invention aims to overcome the defect that when high-speed airflow enters an inlet of an intake manifold from the intake manifold, turbulence can be generated to cause larger noise, and provides a noise reduction structure for the inlet of the intake manifold of an engine, which can not generate turbulence and has smaller noise when the high-speed airflow enters the inlet of the intake manifold from the intake manifold.
The specific technical scheme of the invention is as follows:
an engine intake manifold inlet noise reduction structure comprising: the engine is provided with an inlet of an air inlet manifold, the air inlet manifold with one end communicated with the inlet of the air inlet manifold, a noise reduction net and a sound absorption and noise reduction block arranged on the outer side wall of one end of the air inlet manifold; the shape of the noise reduction net is a circular crown shape with the radius equal to the radius of the inlet of the intake manifold; the noise reduction net is positioned at the inner side of the inlet of the intake manifold and is connected with the inner side of the inlet of the intake manifold in a surrounding way; the sound absorption and noise reduction block is made of mineral wool, glass wool and polyester fiber sound absorption boards. The noise reduction structure for the inlet of the intake manifold of the engine is characterized in that a noise reduction net in a circular crown shape is arranged on the inner side of the inlet of the intake manifold, a sound absorption and noise reduction block which is favorable for sound absorption and noise reduction is arranged on the outer side of one end of the intake manifold in a surrounding mode, turbulent flow cannot be generated when high-speed airflow enters the inlet of the intake manifold from the intake manifold, and noise is small.
Preferably, the noise reduction net is positioned at the lower side of the inlet of the intake manifold; the sound absorption and noise reduction block is connected with the upper side of the outer side wall at one end of the air inlet manifold. The vibration reduction, sound absorption and noise reduction effects are improved.
Preferably, the sound absorption and noise reduction block is provided with a sound insulation cavity. The noise is easy to be attenuated quickly.
Preferably, the distance between the noise reduction net and the outer end of the inlet of the intake manifold is less than or equal to 30 mm; the ratio of the height of the circular crown of the noise reduction net to the radius of the inlet of the intake manifold is 0.7-0.95: 1. the effect of reducing the noise at the inlet of the intake manifold is obvious.
Preferably, the mesh of the noise reduction net is a square hole with the side length not more than 8 mm. The effect of reducing the noise at the inlet of the intake manifold is obvious.
Preferably, the material of the noise reduction net is high-temperature-resistant plastic. The manufacture is convenient, the weight is light, and the vibration and noise reduction is facilitated.
Compared with the prior art, the invention has the beneficial effects that: according to the engine intake manifold inlet noise reduction structure, the inner side of the intake manifold inlet is provided with the noise reduction net in a circular crown shape, the outer side of one end of the intake manifold is provided with the sound absorption and noise reduction block which is favorable for sound absorption and noise reduction, turbulence can not be generated when high-speed airflow enters the intake manifold inlet from the intake manifold, and the noise is small. The noise reduction net is positioned at the lower side of the inlet of the intake manifold, and the sound absorption and noise reduction block is connected with the upper side of the outer side wall at one end of the intake manifold, so that the vibration reduction, sound absorption and noise reduction effects are improved. And a sound insulation cavity is arranged in the sound absorption and noise reduction block. The noise is easy to be attenuated quickly. The distance between the noise reduction net and the outer end of the inlet of the intake manifold is less than or equal to 30mm, and the ratio of the height of the circular crown of the noise reduction net to the radius of the inlet of the intake manifold is 0.7-0.95: 1, the mesh of noise reduction net is the square hole that the length of side is not more than 8 mm, and it is obvious to reduce intake manifold entrance noise effect. The noise reduction net is made of high-temperature-resistant plastic, is convenient to manufacture and light in weight, and is beneficial to vibration reduction and noise reduction.
Drawings
Figure 1 is a schematic illustration of an explosive structure according to the present invention.
In the figure: the engine comprises an intake manifold inlet 1, an engine 2, an intake manifold 3, a noise reduction net 4, a sound absorption and noise reduction block 5, a sound insulation cavity 6 and meshes 7.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in figure 1: an engine intake manifold inlet noise reduction structure comprising: the engine is provided with an inlet 1 of an air inlet manifold, the air inlet manifold 3 with one end communicated with the inlet 1 of the air inlet manifold, a noise reduction net 4 and a sound absorption and noise reduction block 5 arranged at the outer side wall of one end of the air inlet manifold 3; the shape of the noise reduction net 4 is a circular crown shape with the radius equal to that of the inlet 1 of the intake manifold; the noise reduction net 4 is positioned on the inner side of the inlet 1 of the intake manifold and is screwed with the inner side of the inlet 1 of the intake manifold. The material of the sound absorption and noise reduction block 5 is mineral wool.
The noise reduction net 4 is positioned at the lower side of the inlet 1 of the intake manifold; the sound absorption and noise reduction block 5 is bonded with the upper side of the outer side wall of one end of the intake manifold 3.
And a sound insulation cavity 6 is arranged in the sound absorption and noise reduction block 5.
The distance between the noise reduction net 4 and the outer end of the inlet 1 of the intake manifold is 20 mm; the ratio of the crown height of the noise reduction mesh 4 to the radius of the intake manifold inlet 1 is 0.9: 1.
the mesh 7 of the noise reduction net 4 is a square hole with the side length of 6 mm.
The noise reduction net 4 is made of high-temperature-resistant plastic.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (6)
1. An engine intake manifold inlet noise reduction structure comprising: the engine that is equipped with intake manifold entry, the intake manifold of one end and intake manifold entry intercommunication, characterized by, engine intake manifold entry noise reduction structure still include: the noise reduction net is a sound absorption and noise reduction block arranged on the outer side wall of one end of the intake manifold; the shape of the noise reduction net is a circular crown shape with the radius equal to the radius of the inlet of the intake manifold; the noise reduction net is positioned on the inner side of the inlet of the intake manifold and is connected with the inner side of the inlet of the intake manifold.
2. The engine intake manifold inlet noise reduction structure according to claim 1, characterized in that: the noise reduction net is positioned at the lower side of the inlet of the intake manifold; the sound absorption and noise reduction block is connected with the upper side of the outer side wall at one end of the air inlet manifold.
3. The engine intake manifold inlet noise reduction structure according to claim 1 or 2, characterized in that: and a sound insulation cavity is arranged in the sound absorption and noise reduction block.
4. The engine intake manifold inlet noise reduction structure according to claim 1 or 2, characterized in that: the distance between the noise reduction net and the outer end of the inlet of the intake manifold is less than or equal to 30 mm; the ratio of the height of the circular crown of the noise reduction net to the radius of the inlet of the intake manifold is 0.7-0.95: 1.
5. the engine intake manifold inlet noise reduction structure according to claim 1 or 2, characterized in that: the mesh of the noise reduction net is a square hole with the side length not more than 8 mm.
6. The engine intake manifold inlet noise reduction structure according to claim 1 or 2, characterized in that: the noise reduction net is made of high-temperature-resistant plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837472.5A CN110685837A (en) | 2019-09-05 | 2019-09-05 | Engine intake manifold entry noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837472.5A CN110685837A (en) | 2019-09-05 | 2019-09-05 | Engine intake manifold entry noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110685837A true CN110685837A (en) | 2020-01-14 |
Family
ID=69107782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910837472.5A Pending CN110685837A (en) | 2019-09-05 | 2019-09-05 | Engine intake manifold entry noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110685837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000964A (en) * | 2021-10-27 | 2022-02-01 | 湖南弘辉科技有限公司 | Noise reduction device of ship engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090038880A1 (en) * | 2006-03-16 | 2009-02-12 | Sadao Asada | Air Intake Noise Reducing Device, Internal Combustion Engine Fitted with the Same and Structure for Fitting the Same to the Internal Combustion Engine |
| JP2011236853A (en) * | 2010-05-12 | 2011-11-24 | Denso Corp | Intake air noise reduction device for internal combustion engine |
| CN204877749U (en) * | 2015-06-15 | 2015-12-16 | 华晨汽车集团控股有限公司 | Net system spare of making an uproar falls |
| US20160146167A1 (en) * | 2013-07-09 | 2016-05-26 | Nok Corporation | Sealing device |
| 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 |
| CN207437236U (en) * | 2017-09-28 | 2018-06-01 | 中国第一汽车股份有限公司 | A kind of noise reducing type throttle body sealing ring |
| CN207847820U (en) * | 2018-01-29 | 2018-09-11 | 北京汽车动力总成有限公司 | Seal washer and have its vehicle |
-
2019
- 2019-09-05 CN CN201910837472.5A patent/CN110685837A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090038880A1 (en) * | 2006-03-16 | 2009-02-12 | Sadao Asada | Air Intake Noise Reducing Device, Internal Combustion Engine Fitted with the Same and Structure for Fitting the Same to the Internal Combustion Engine |
| JP2011236853A (en) * | 2010-05-12 | 2011-11-24 | Denso Corp | Intake air noise reduction device for internal combustion engine |
| US20160146167A1 (en) * | 2013-07-09 | 2016-05-26 | Nok Corporation | Sealing device |
| CN204877749U (en) * | 2015-06-15 | 2015-12-16 | 华晨汽车集团控股有限公司 | Net system spare of making an uproar falls |
| 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 |
| CN207437236U (en) * | 2017-09-28 | 2018-06-01 | 中国第一汽车股份有限公司 | A kind of noise reducing type throttle body sealing ring |
| CN207847820U (en) * | 2018-01-29 | 2018-09-11 | 北京汽车动力总成有限公司 | Seal washer and have its vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000964A (en) * | 2021-10-27 | 2022-02-01 | 湖南弘辉科技有限公司 | Noise reduction device of ship engine |
| CN114000964B (en) * | 2021-10-27 | 2022-10-04 | 湖南弘辉科技有限公司 | Noise reduction device of ship engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200114 |