CN210715299U - Broadband silencer and medium cooling pipe with same - Google Patents
Broadband silencer and medium cooling pipe with same Download PDFInfo
- Publication number
- CN210715299U CN210715299U CN201921429247.XU CN201921429247U CN210715299U CN 210715299 U CN210715299 U CN 210715299U CN 201921429247 U CN201921429247 U CN 201921429247U CN 210715299 U CN210715299 U CN 210715299U
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- cylindric
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- annular partition
- partition portion
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- 230000003584 silencer Effects 0.000 title claims description 23
- 238000001816 cooling Methods 0.000 title claims description 9
- 238000005192 partition Methods 0.000 claims abstract description 20
- 230000030279 gene silencing Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920006500 PA66-GF35 Polymers 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Supercharger (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model provides a wide band muffler and have well cold tube of this wide band muffler. This wide band muffler includes cylindric casing and cylindric core, the cylindric core passes through the end cover pressure equipment in the cylindric casing, the outer wall of cylindric core is equipped with two or more annular partition portion, the periphery of annular partition portion and the inner wall tight fit of cylindric casing, annular partition portion falls into a plurality of amortization chamber with the space between cylindric shells inner wall and the cylindric core outer wall, the outer wall of cylindric core is located and is equipped with the bar hole between the annular partition portion, the length direction in bar hole and the radial parallel of cylindric core, inside bar hole intercommunication amortization chamber and the cylindric core. The utility model discloses a cooperation structure in bar hole and amortization chamber can satisfy the noise elimination frequency requirement of turbo charger Hiss noise, effectively reduces turbo charger Hiss noise.
Description
Technical Field
The utility model relates to an automobile engine accessories technical field, concretely relates to wide band muffler and have well cold tube of this wide band muffler.
Background
With the increasing development of automobile technology, the automobile dynamic property is also paid attention to by users as a performance index closely related to the daily driving of customers. Meanwhile, with the stricter national relevant standards on fuel consumption and emission regulations of automobile enterprises, particularly the proposal of carbon emission limitation, a supercharging technology becomes a necessary choice for the technical development of the engine, wherein the turbocharger has the unique technical characteristic of even reading, and is increasingly widely applied to the automobile engine. The turbocharger has hundreds of thousands of operating rotating speeds or even hundreds of thousands of operating rotating speeds per minute, which inevitably bring about the operating noise of the turbocharger, and although the invention of the turbocharger has been invented for many years, the research related to the turbocharger noise in the world is just started, and the operating noise of the turbocharger can seriously affect the driving comfort of customers and even cause complaints. The general turbocharger noise is classified into 4 categories according to the spectral characteristics, frequency range and generation mechanism of the noise, which are transient surge, synchronous noise, multi-step synchronous noise and broadband noise, and the broadband noise is also called Hiss noise. Hiss noise is a very common turbocharger noise, and mainly occurs when an engine accelerator is accelerated instantaneously, and the rotating speed of a turbocharger is rapidly increased in a relatively short time, and sometimes occurs under a steady state condition when the rotating speed of the turbocharger is not changed. The main reason for generating the noise is that the engine pursues low-speed and high-torque, and the operation line of the compressor is too close to a surge area, so that pressurized air is subjected to turbulence when the impeller of the compressor of the turbocharger works.
Through the analysis of the Hiss noise performance characteristics and the generation principle and reason of the turbocharger, the noise should be controlled mainly from 2 aspects, namely the noise source and the propagation path. The control noise source is mainly to make the operation line of the supercharger far away from the surge curve, and is realized by the structural optimization of the supercharger body, including the schemes of electric control calibration, large-pressure impeller, variable cross-section turbocharger structural optimization, vortex air inlet structural optimization, blade profile optimization and the like; and controlling a transmission path, wherein the Hiss noise is controlled in the transmission path of the noise mainly by using modes of blocking, separating, absorbing and the like, and the Hiss noise control method comprises the control of schemes of a whole vehicle acoustic bag, a wrapping pipeline, a pressurizing silencer and the like.
The turbocharger body is complex to improve, high in cost and not practical in the development stage, so that Hiss noise is reduced mainly by controlling the way of a transmission path at present, and the scheme of additionally arranging a proper silencer at the outlet of the turbocharger is common in the application of the whole vehicle.
At present, a silencer additionally arranged at a middle cooling pipe at the outlet of a supercharger is difficult to pertinently eliminate Hiss noise because a plurality of uniformly distributed circular hole structures are adopted in air holes of a silencing cavity.
Disclosure of Invention
The utility model discloses a first purpose provides a wide band muffler can effectively reduce turbo charger Hiss noise.
According to the utility model provides a wide band muffler, including cylindric casing and cylindric core, the cylindric core pass through the end cover press-fit in the cylindric casing, the outer wall of cylindric core is equipped with two or more annular partition portion, the periphery of annular partition portion with the inner wall tight fit of cylindric casing, annular partition portion will space between cylindric shells inner wall and the cylindric core outer wall falls into a plurality of amortization chamber, the outer wall of cylindric core is located be equipped with the bar hole between the annular partition portion, the length direction in bar hole with the radial parallel of cylindric core, bar hole intercommunication the amortization chamber with inside the cylindric core.
The utility model discloses a wide band muffler through the cooperation structure in bar hole and amortization chamber, can satisfy the noise elimination frequency requirement of turbo charger Hiss noise, effectively reduces turbo charger Hiss noise.
Further, in order to improve the noise reduction effect, the strip-shaped holes are symmetrically arranged in pairs with the circumference center of the cylindrical core body.
Furthermore, the outer end peripheral wall of cylindric casing is equipped with the first bulge loop that the cross-section is semicircular, the terminal surface axial extension of cylindric casing is equipped with first cylindric connecting portion, the end cover is equipped with second cylindric connecting portion, the tip of second cylindric connecting portion is equipped with the second bulge loop that the cross-section is semicircular. The connecting structure can reduce the space occupied by the silencer and can be more flexibly arranged in the limited arrangement space of the whole vehicle.
Furthermore, the annular partition plate part has two and will the space between cylindric shells inner wall and the cylindric core outer wall divides into three amortization chamber, three amortization chamber corresponds respectively and is equipped with three pairs of bar holes, and the length in these three pairs of bar holes is the same, and the width size differentiation in three pairs of bar holes. The different pairs of strip-shaped holes are matched with the plurality of silencing cavities, so that the silencing requirements of different target frequencies can be met, and the problem of Hiss noise of the turbocharger is solved.
Preferably, the width dimension ratio of the three pairs of strip-shaped holes is 4.5: 2.5: 4. The silencer with the structure has the silencing frequency range of 1700 Hz-2700 Hz, and can solve the problem of Hiss noise generation frequency corresponding to the turbocharger of the existing supercharged engine.
A second object of the utility model is to provide a well cold tube with above-mentioned wide band muffler, this well cold tube includes above-mentioned wide band muffler, insert respectively at the both ends of wide band muffler well cold tube is through the worm clamp fastening.
Drawings
Fig. 1 is a schematic view of a connection structure of the broadband silencer and the intermediate cooling pipe of the present invention.
Fig. 2 is a schematic cross-sectional structure diagram of the broadband silencer of the present invention.
FIG. 3 is a graph of Hiss noise spectrum of a conventional supercharged engine in an original state without a silencer.
Fig. 4 is a Hiss noise spectrum diagram of a supercharged engine equipped with the present invention.
In which the figures are as follows: 1. a broadband silencer; 11. a cylindrical housing; 111. a first convex ring; 112. a first cylindrical connecting portion; 12. a cylindrical core; 121. an annular partition portion; 122. a strip-shaped hole; 13. an end cap; 131. a second cylindrical connecting portion; 132. a second convex ring; 14. a sound-deadening chamber; 2. a medium-cooling pipe; 2a, a middle cooling pipe section; 2b, a middle cooling pipe section; 3a, a worm hoop; 3b, a worm hoop.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, and the like.
As fig. 1, 2, the utility model discloses a wide band muffler 1, including cylindric casing 11 and cylindric core 12, cylindric core 12 passes through end cover 13 pressure equipment in cylindric casing 11, the outer wall of cylindric core 12 is equipped with two or more than two annular partition portions 121, the periphery of annular partition portion 121 and cylindric casing 11's inner wall tight fit, annular partition portion 121 falls into a plurality of amortization chamber 14 with the space between cylindric casing 11 inner wall and the cylindric core 12 outer wall, the outer wall of cylindric core 12 is located and is equipped with bar hole 122 between annular partition portion 121, the length direction in bar hole 122 and the radial parallel of cylindric core 12, bar hole 122 intercommunication amortization chamber 14 and the inside of cylindric core 12.
The utility model discloses a wide band muffler through the cooperation structure of bar hole 122 and amortization chamber 14, can satisfy the noise elimination frequency requirement of turbo charger Hiss noise, effectively reduces turbo charger Hiss noise.
As a preferred embodiment, in order to enhance the sound deadening effect, the strip-shaped holes 122 are provided in pairs symmetrically with respect to the circumferential center of the cylindrical core 12.
Preferably, the outer end peripheral wall of the cylindrical shell 11 is provided with a first convex ring 111 with a semicircular section, the end surface of the cylindrical shell 11 is axially extended to be provided with a first cylindrical connecting part 112, the end cover 13 is provided with a second cylindrical connecting part 131, and the end part of the second cylindrical connecting part 131 is provided with a second convex ring 132 with a semicircular section. The connecting structure can reduce the space occupied by the broadband silencer 1, and can be more flexibly arranged in the limited arrangement space of the whole vehicle.
Preferably, the annular partition plate portion 121 has two and divides the space between the inner wall of the cylindrical shell 11 and the outer wall of the cylindrical core 12 into three muffling chambers, the three muffling chambers are respectively and correspondingly provided with three pairs of strip-shaped holes, the three pairs of strip-shaped holes have the same length, and the width dimensions of the three pairs of strip-shaped holes are different. The different pairs of strip-shaped holes are matched with the plurality of silencing cavities, so that the silencing requirements of different target frequencies can be met, and the problem of Hiss noise of the turbocharger is solved.
Preferably, the width dimension ratio of the three pairs of strip-shaped holes is 4.5: 2.5: 4. The silencer with the structure has the silencing frequency range of 1700 Hz-2700 Hz, and can solve the problem of Hiss noise generation frequency corresponding to the turbocharger of the existing supercharged engine. In practical application, the length of the three pairs of strip-shaped holes is preferably 38mm, and the widths of the three pairs of strip-shaped holes are respectively 4.5mm, 2.5mm and 4 mm; the cylindrical shell 11, the cylindrical core 12 and the end cover 13 of the broadband silencer 1 are all made of PA66-GF35 materials by injection molding, so that the weight of the whole vehicle can be reduced; the cylindrical housing 11 and the end cap 13 are welded together using a vibration friction welding process.
The utility model discloses still provide well cold tube 2 with above-mentioned wide band muffler 1, cold tube 2 includes above-mentioned wide band muffler 1 in this, and cold tube 2a and well cold tube 2b and through worm clamp 3a and the fastening of worm clamp 3b in inserting respectively at the both ends of wide band muffler 1.
As shown in FIG. 3, when the existing supercharged engine is not provided with a silencer, Hiss noises exist in the supercharged engine at 1888Hz, 2238Hz, 2466Hz and 2640Hz, and the required silencer silencing frequency range is 1700Hz to 2700 Hz. Use the utility model discloses a behind the well cold tube 2 of silencer 1 is frequently imitated to bandwidth, it is obvious to improve the effect at target frequency section Hiss noise, as shown in fig. 4 to effectual turbocharger Hiss noise problem of having solved.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (6)
1. The utility model provides a wide band muffler, its characterized in that includes cylindric casing and cylindric core, the cylindric core pass through the end cover pressure equipment in the cylindric casing, the outer wall of cylindric core is equipped with two or more annular partition portion, the periphery of annular partition portion with the inner wall tight fit of cylindric casing, annular partition portion will space between cylindric casing inner wall and the cylindric core outer wall divides into a plurality of amortization chamber, the outer wall of cylindric core is located be equipped with the bar hole between the annular partition portion, the length direction in bar hole with the radial parallel of cylindric core, the bar hole intercommunication the amortization chamber with inside the cylindric core.
2. The broadband silencer of claim 1, wherein said slotted holes are symmetrically arranged in pairs about a circumferential center of said cylindrical core.
3. The broadband silencer according to claim 2, wherein the outer end peripheral wall of the cylindrical housing is provided with a first convex ring having a semicircular cross section, the end surface of the cylindrical housing extends axially to form a first cylindrical connecting portion, the end cap is provided with a second cylindrical connecting portion, and the end of the second cylindrical connecting portion is provided with a second convex ring having a semicircular cross section.
4. The broadband silencer according to claim 1, 2 or 3, wherein the annular partition portion has two and divides the space between the inner wall of the cylindrical shell and the outer wall of the cylindrical core into three silencing chambers, and the three silencing chambers are respectively provided with three pairs of strip-shaped holes, the three pairs of strip-shaped holes have the same length, and the width dimensions of the three pairs of strip-shaped holes are different.
5. The broadband silencer of claim 4, wherein the ratio of the width dimensions of the three pairs of strip-shaped apertures is 4.5: 2.5: 4.
6. A middle cooling pipe, characterized by comprising the wide-band silencer of claim 5, wherein both ends of the wide-band silencer are respectively inserted into the middle cooling pipe and fastened through a worm clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429247.XU CN210715299U (en) | 2019-08-30 | 2019-08-30 | Broadband silencer and medium cooling pipe with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429247.XU CN210715299U (en) | 2019-08-30 | 2019-08-30 | Broadband silencer and medium cooling pipe with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715299U true CN210715299U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921429247.XU Active CN210715299U (en) | 2019-08-30 | 2019-08-30 | Broadband silencer and medium cooling pipe with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210715299U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596718A (en) * | 2022-10-09 | 2023-01-13 | 中国第一汽车股份有限公司（Cn） | A pressure shell assembly and a turbocharger for reducing intake noise of a supercharger |
| CN117287289A (en) * | 2023-08-28 | 2023-12-26 | 东风柳州汽车有限公司 | A muffler and vehicle |
-
2019
- 2019-08-30 CN CN201921429247.XU patent/CN210715299U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115596718A (en) * | 2022-10-09 | 2023-01-13 | 中国第一汽车股份有限公司（Cn） | A pressure shell assembly and a turbocharger for reducing intake noise of a supercharger |
| CN117287289A (en) * | 2023-08-28 | 2023-12-26 | 东风柳州汽车有限公司 | A muffler and vehicle |
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