CN110685835A - Intake manifold vibration and noise reduction structure - Google Patents
Intake manifold vibration and noise reduction structure Download PDFInfo
- Publication number
- CN110685835A CN110685835A CN201910838167.8A CN201910838167A CN110685835A CN 110685835 A CN110685835 A CN 110685835A CN 201910838167 A CN201910838167 A CN 201910838167A CN 110685835 A CN110685835 A CN 110685835A
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- CN
- China
- Prior art keywords
- intake manifold
- vibration
- vibration damping
- piston
- noise reduction
- 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
- 230000009467 reduction Effects 0.000 title claims abstract description 46
- 238000013016 damping Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
Images
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
- F02M35/10—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
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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
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
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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
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
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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
- F02M35/1288—Intake silencers ; Sound modulation, transmission or amplification combined with or integrated into other devices ; Plurality of air intake silencers
Abstract
The invention aims to provide a vibration and noise reduction structure of an intake manifold, which comprises: the vibration damping device comprises an air inlet manifold, a cylinder cover, an outer cylinder, an inner cylinder, elastic cushion blocks and a vibration damping device, wherein two ends of the outer cylinder are respectively provided with a through cover sleeved outside the air inlet manifold; a gap between the inner cylinder and the air inlet manifold forms a vibration damping cavity, and a gap between the inner cylinder and the outer cylinder forms a liquid cavity; the vibration damping device includes: the plurality of vibration damping assemblies are distributed along the circumference of the air inlet manifold and are formed by a plurality of vibration damping units; the vibration damping unit includes: the piston hole is arranged on the side wall of the inner barrel, the piston is arranged in the piston hole, the front end of the piston presses the outer side wall of the air inlet manifold, and the elastic pressing piece is arranged between the rear end of the piston and the inner side wall of the outer barrel; the liquid cavity is filled with a liquid medium; the liquid medium is water or hydraulic oil. The intake manifold vibration and noise reduction structure enables vibration noise to be small when the intake manifold is used, and the service life of the intake manifold is long.
Description
Technical Field
The invention relates to the field of automobile power systems, in particular to a vibration and noise reduction structure of an intake manifold.
Background
For a carburetor or throttle body gasoline injection engine, the intake manifold refers to the intake line from behind the carburetor or throttle body to in front of the cylinder head intake port; the intake manifold functions to distribute the air and fuel mixture from the carburetor or throttle body to the cylinder intake ports. The mounting structure of the intake manifold may be obtained from the chinese patent application No.: an engine intake manifold bracket disclosed in the utility model of CN201520631443.0 is known; the air inlet manifold is arranged on the cylinder cover through the mounting bracket, so that the defects that the vibration noise is high when the air inlet manifold is used and the service life of the air inlet manifold is short exist; therefore, the design of the intake manifold mounting structure which has the advantages of low vibration noise and long service life of the intake manifold becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects that the existing intake manifold is arranged on a cylinder cover through an installation support, the vibration noise is higher when the intake manifold is used, and the service life of the intake manifold is shorter, and provides an intake manifold installation structure which has lower vibration noise when the intake manifold is used and longer service life of the intake manifold.
The specific technical scheme of the invention is as follows:
an intake manifold vibration and noise reduction structure comprising: the vibration damping device comprises an air inlet manifold, a cylinder cover, an outer cylinder, an inner cylinder, elastic cushion blocks and a vibration damping device, wherein two ends of the outer cylinder are respectively provided with a through cover sleeved outside the air inlet manifold; a gap between the inner cylinder and the air inlet manifold forms a vibration damping cavity, and a gap between the inner cylinder and the outer cylinder forms a liquid cavity; the vibration damping device includes: the plurality of vibration damping assemblies are distributed along the circumference of the air inlet manifold and are formed by a plurality of vibration damping units; the vibration damping unit includes: the piston hole is arranged on the side wall of the inner barrel, the piston is arranged in the piston hole, the front end of the piston presses the outer side wall of the air inlet manifold, and the elastic pressing piece is arranged between the rear end of the piston and the inner side wall of the outer barrel; the liquid cavity is filled with a liquid medium; the liquid medium is water or hydraulic oil. When the vibration and noise reduction structure of the intake manifold is used, dynamic energy generated by the intake manifold along with the vibration of an engine is absorbed through the piston and the pressure spring of the vibration damping unit, and the dynamic energy is quickly attenuated, so that the intake manifold is quickly and stably released; when the piston moves outwards by the transverse vibration of the intake manifold, the rest pistons move inwards under the action of the liquid medium, and the pressure of the piston pressing the outer side wall of the intake manifold generates follow-up change, so that the dynamic energy generated by the vibration is more effectively attenuated, and the vibration reduction and noise reduction effects of the intake manifold are better. The intake manifold vibration and noise reduction structure ensures that the intake manifold has smaller vibration noise when in use and has longer service life; the elastic cushion block is beneficial to blocking vibration noise generated by the engine and is beneficial to vibration reduction and noise reduction of the intake manifold.
Preferably, the intake manifold vibration and noise reduction structure further comprises: the two sound absorption and noise reduction rings are sleeved on the intake manifold and are arranged on the opposite outer sides of the two through covers in a one-to-one correspondence manner; a sound insulation ring groove is formed in one end, opposite to the through cover, of the sound absorption and noise reduction ring; the sound absorption and noise reduction ring is made of mineral wool, glass wool and polyester fiber sound absorption plates. The sound absorption and noise reduction ring is beneficial to sound absorption and noise reduction; the sound insulation ring groove is beneficial to quickly attenuating noise.
Preferably, the front end of the piston is connected with an elastic pressing block which presses the outer side wall of the air inlet manifold. The elastic pressing block connected with the front end of the piston presses the outer side of the air inlet manifold to improve the vibration reduction and noise reduction effects.
Preferably, the elastic pressing piece is a pressure spring with one end connected with the rear end of the piston; the other end of the pressure spring presses the inner side wall of the outer cylinder. The elastic pressing piece is a pressure spring, and the elastic pressing effect is good.
Preferably, the vibration damping units of the vibration damping assembly are arranged along the axial direction of the intake manifold; the number of the slow vibration assemblies is even, and the slow vibration units of two adjacent slow vibration assemblies are arranged in a staggered mode. The circumferential vibration reduction and noise reduction effects of the intake manifold are uniform.
Preferably, an elastic sealing ring is arranged between the through cover and the intake manifold. Is beneficial to sealing.
Compared with the prior art, the invention has the beneficial effects that: the intake manifold vibration and noise reduction structure ensures that the intake manifold has smaller vibration noise when in use and has longer service life; the elastic cushion block is beneficial to blocking vibration noise generated by the engine and is beneficial to vibration reduction and noise reduction of the intake manifold. The sound absorption and noise reduction ring is beneficial to sound absorption and noise reduction; the sound insulation ring groove is beneficial to quickly attenuating noise. The elastic pressing block connected with the front end of the piston presses the outer side of the air inlet manifold to improve the vibration reduction and noise reduction effects. The elastic pressing piece is a pressure spring, and the elastic pressing effect is good. The unit that bradyseisms of bradyseism subassembly is arranged along the air intake manifold axial, and the number of bradyseism subassembly is the even number, and the unit that bradyseism of two adjacent bradyseism subassemblies is crisscross to be set up, does benefit to make air intake manifold circumference damping noise reduction effect even. An elastic sealing ring is arranged between the through cover and the intake manifold to facilitate sealing.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
In the figure: the device comprises an air inlet manifold 1, a cylinder cover 2, a through cover 3, an outer cylinder 4, an inner cylinder 5, an elastic cushion block 6, a vibration damping cavity 7, a liquid cavity 8, a piston hole 9, a piston 10, a sound absorption and noise reduction ring 11, a sound insulation ring groove 12, an elastic pressing block 13, a pressure spring 14 and an elastic sealing ring 15.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in figure 1: an intake manifold vibration and noise reduction structure comprising: the air intake manifold comprises an air intake manifold 1, a cylinder cover 2, an outer cylinder 4 of a through cover 3 sleeved outside the air intake manifold 1, inner cylinders 5 with two ends in one-to-one correspondence to the two through covers 3, elastic cushion blocks 6 respectively connected with the outer cylinder 4 and the cylinder cover 2 through screws, and a vibration damping device, wherein the two ends of the air intake manifold are respectively provided with the outer cylinder 4 of the through cover 3; the through cover 3 is in threaded connection with the outer barrel 4; a gap between the inner cylinder 5 and the intake manifold 1 forms a buffer cavity 7, and a gap between the inner cylinder 5 and the outer cylinder 4 forms a liquid cavity 8; the vibration damping device includes: the plurality of vibration damping assemblies are distributed along the circumference of the air inlet manifold 1 and are composed of three vibration damping units; the vibration damping unit includes: the device comprises a piston hole 9 arranged on the side wall of the inner cylinder 5, a piston 10 arranged in the piston hole 9 and with the front end pressing the outer side wall of the air inlet manifold 1, and an elastic pressing piece arranged between the rear end of the piston 10 and the inner side wall of the outer cylinder 4; the liquid chamber 8 is filled with a liquid medium; the liquid medium is hydraulic oil; the material of the elastic cushion block 6 is rubber.
In this embodiment:
the intake manifold 1 vibration damping and noise reducing structure further comprises: the two sound absorption and noise reduction rings 11 are sleeved on the air inlet manifold 1 and are arranged on the opposite outer sides of the two through covers 3 in a one-to-one correspondence manner; a sound insulation ring groove 12 is arranged at one end of the sound absorption and noise reduction ring 11 opposite to the through cover 3; the material of the sound absorption and noise reduction ring 11 is mineral wool.
The front end of the piston 10 is bonded with an elastic pressing block 13 which presses the outer side wall of the intake manifold 1. The material of the elastic pressing block 13 is rubber.
The elastic pressing piece is a pressure spring 14 with one end welded with the rear end of the piston 10; the other end of the pressure spring 14 presses the inner side wall of the outer cylinder 4.
The vibration damping units of the vibration damping assembly are axially arranged along the air inlet manifold 1; the number of the slow vibration assemblies is four, and the slow vibration units of two adjacent slow vibration assemblies are arranged in a staggered mode.
An elastic sealing ring 15 is arranged between the through cover 3 and the intake manifold 1. The elastic sealing ring 15 is an O-ring.
When the vibration and noise reduction structure of the intake manifold 1 is used, the intake manifold 1 vibrates along with the vibration of an engine, the front end of the intake manifold 1 presses the piston 10 at the outer side of the intake manifold 1, one end of the intake manifold is connected with the rear end of the piston 10, and the other end of the intake manifold presses the pressure spring 14 at the inner side of the outer cylinder 4 to buffer and absorb the dynamic energy of the vibration and quickly attenuate the vibration, so that the intake manifold 1 is quickly and stably released; when one piston 10 moves outwards by the transverse vibration of the intake manifold 1, the rest pistons 10 move inwards under the action of the liquid medium, the pressure of the piston 10 pressing the outer side wall of the intake manifold 1 generates follow-up change, so that the vibration dynamic energy attenuation is more effective, the sound absorption and noise reduction are realized through the sound absorption and noise reduction ring 11, and the vibration reduction and noise reduction effect of the intake manifold 1 is better.
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 intake manifold vibration and noise reduction structure comprising: air intake manifold, cylinder cap, characterized by, air intake manifold damping fall make an uproar structure still include: the two ends of the outer cylinder are respectively provided with a through cover sleeved outside the air inlet manifold, the two ends of the inner cylinder are correspondingly connected with the two through covers one by one, the elastic cushion blocks are respectively connected with the outer cylinder and the cylinder cover, and the vibration damping device is arranged on the outer cylinder; a gap between the inner cylinder and the air inlet manifold forms a vibration damping cavity, and a gap between the inner cylinder and the outer cylinder forms a liquid cavity; the vibration damping device includes: the plurality of vibration damping assemblies are distributed along the circumference of the air inlet manifold and are formed by a plurality of vibration damping units; the vibration damping unit includes: the piston hole is arranged on the side wall of the inner barrel, the piston is arranged in the piston hole, the front end of the piston presses the outer side wall of the air inlet manifold, and the elastic pressing piece is arranged between the rear end of the piston and the inner side wall of the outer barrel; the liquid chamber is filled with a liquid medium.
2. The intake manifold vibration damping and noise reducing structure according to claim 1, wherein: further comprising: the two sound absorption and noise reduction rings are sleeved on the intake manifold and are arranged on the opposite outer sides of the two through covers in a one-to-one correspondence manner; and a sound insulation ring groove is arranged at one end of the sound absorption and noise reduction ring opposite to the through cover.
3. The precision intake manifold vibration damping and noise reducing structure according to claim 1, wherein: the front end of the piston is connected with an elastic pressing block which presses the outer side wall of the air inlet manifold.
4. The intake manifold vibration/noise reduction structure according to claim 1, 2 or 3, wherein: the elastic pressing piece is a pressure spring with one end connected with the rear end of the piston; the other end of the pressure spring presses the inner side wall of the outer cylinder.
5. The intake manifold vibration/noise reduction structure according to claim 1, 2 or 3, wherein: the vibration damping units of the vibration damping assembly are axially arranged along the intake manifold; the number of the slow vibration assemblies is even, and the slow vibration units of two adjacent slow vibration assemblies are arranged in a staggered mode.
6. The intake manifold vibration/noise reduction structure according to claim 1, 2 or 3, wherein: an elastic sealing ring is arranged between the through cover and the intake manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838167.8A CN110685835A (en) | 2019-09-05 | 2019-09-05 | Intake manifold vibration and noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838167.8A CN110685835A (en) | 2019-09-05 | 2019-09-05 | Intake manifold vibration and noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110685835A true CN110685835A (en) | 2020-01-14 |
Family
ID=69108845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910838167.8A Pending CN110685835A (en) | 2019-09-05 | 2019-09-05 | Intake manifold vibration and noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110685835A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD273092A1 (en) * | 1988-06-21 | 1989-11-01 | Schwermasch Liebknecht Veb K | SPRING-COUPLED SWIVEL DAMPER BZW. VIBRATION DAMPING, ROTATING CLUTCH |
| CN205497366U (en) * | 2016-01-11 | 2016-08-24 | 江苏三浦五金有限公司 | Dual fail -safe kinetic energy percussion ware |
| CN206487577U (en) * | 2017-01-25 | 2017-09-12 | 宁波神通模塑有限公司 | Inlet manifold mounting structure |
| CN107575528A (en) * | 2017-08-14 | 2018-01-12 | 浙江水利水电学院 | Accurate communication equipment vibration absorber |
| CN207348990U (en) * | 2017-11-07 | 2018-05-11 | 浙江安吉金焰机械有限公司 | A kind of new automobile inlet manifold |
-
2019
- 2019-09-05 CN CN201910838167.8A patent/CN110685835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD273092A1 (en) * | 1988-06-21 | 1989-11-01 | Schwermasch Liebknecht Veb K | SPRING-COUPLED SWIVEL DAMPER BZW. VIBRATION DAMPING, ROTATING CLUTCH |
| CN205497366U (en) * | 2016-01-11 | 2016-08-24 | 江苏三浦五金有限公司 | Dual fail -safe kinetic energy percussion ware |
| CN206487577U (en) * | 2017-01-25 | 2017-09-12 | 宁波神通模塑有限公司 | Inlet manifold mounting structure |
| CN107575528A (en) * | 2017-08-14 | 2018-01-12 | 浙江水利水电学院 | Accurate communication equipment vibration absorber |
| CN207348990U (en) * | 2017-11-07 | 2018-05-11 | 浙江安吉金焰机械有限公司 | A kind of new automobile inlet manifold |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200114 |