CN107605571B - Muffler and motorcycle thereof - Google Patents
Muffler and motorcycle thereof Download PDFInfo
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- CN107605571B CN107605571B CN201710855540.1A CN201710855540A CN107605571B CN 107605571 B CN107605571 B CN 107605571B CN 201710855540 A CN201710855540 A CN 201710855540A CN 107605571 B CN107605571 B CN 107605571B
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- pipe
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- middle pipe
- sleeve
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Abstract
The invention discloses a muffler and a motorcycle thereof, wherein the muffler comprises a muffler cylinder body and an inner connecting pipe assembly which is arranged in the muffler cylinder body and is used for leading in and leading out waste gas, an inner cylinder is arranged in the cylinder body, and the inner connecting pipe assembly longitudinally penetrates through an inner cavity formed by the inner cylinder; the inner barrel is arranged on the outer sleeve at intervals of the inner connecting pipe assembly, a plurality of first through holes are formed in the side wall of the inner barrel, medium-frequency sound waves in a medium-high frequency range can be eliminated by the inner barrel, the sound intensity of the sound of an exhaust pipe is effectively reduced, meanwhile, the sharpness of the medium-high frequency range is reduced to 8.6acum from original 9.9acum by the aid of a resonance cavity arranged in a matched mode, the sound intensity of the medium-high frequency range is reduced to 210.4sone, tone is greatly improved, the sound intensity can be adjusted through a simple silencer internal structure, the noise elimination performance of the silencer is not reduced, the power performance of an engine is not influenced, and the cost of the silencer is effectively reduced.
Description
Technical Field
The invention relates to the field of noise elimination, in particular to a muffler and a motorcycle thereof.
Background
In order to obtain better exhaust sound quality effect, the motorcycle industry generally needs to use sound absorption materials in the muffler. After the sound absorbing material is used, for technical reasons, the muffler must be made of stainless steel (if common steel is used, the inner surface of the muffler must be subjected to rust-proof treatment by "inner paint filling", and the "inner paint filling" will cause the failure of the sound absorbing material). The muffler made of sound absorbing materials and stainless steel has high cost, poor economic benefit, unfavorable cost control, complex treatment process and low production efficiency.
Therefore, in order to solve the above problems, there is a need for a muffler and a motorcycle thereof, which can be adjusted by a simple muffler internal structure, and which can effectively reduce the cost of the muffler without reducing the muffler muffling performance nor affecting the engine power performance.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a muffler, which can be adjusted by a simple muffler internal structure, and which can effectively reduce the cost of the muffler without reducing the muffler muffling performance and affecting the engine power performance.
The muffler comprises a muffler cylinder body and an inner connecting pipe assembly which is arranged in the muffler cylinder body and used for leading in and leading out waste gas, wherein an inner cylinder is arranged in the cylinder body, and the inner connecting pipe assembly longitudinally penetrates through an inner cavity formed by the inner cylinder.
Further, the inner connecting pipe assembly comprises a front pipe, a middle pipe and a tail pipe, wherein the tail pipe is communicated with the middle pipe and used for introducing waste gas into the tail pipe, a sleeve is sleeved outside part of the tail pipe, a first resonance cavity is formed between the sleeve and the tail pipe, and a radial resonance hole used for communicating an inner cavity of the tail pipe with the first resonance cavity is formed in a side wall of the tail pipe, corresponding to the sleeve.
Further, a perforated baffle plate for dividing the middle pipe into a middle pipe front section and a middle pipe rear section is arranged in the middle of the middle pipe, inner cavities of the middle pipe front section and the middle pipe rear section are respectively a front cavity and a rear cavity, and a plurality of first through holes are formed in the side wall of the middle pipe; the front pipe and the tail pipe are respectively and partially arranged in the front cavity and the rear cavity, a plurality of second through holes are formed in the side wall of the front pipe, and the rear port of the front pipe is a plugging port.
Further, a front baffle is arranged at the front end of the inner cylinder, and the middle pipe penetrates through the front baffle and is supported on the front baffle; the front end of the silencer cylinder body forms a conical cover with a small end facing forward, the rear end of the conical cover is fixed on the silencer cylinder body in a sealing way, the front end of the conical cover is fixed on the rear section of the front pipe outside the rear cavity in a sealing way, and part of the rear section of the middle pipe with the first through hole extends into the conical cover and is fixed on the rear section of the front pipe outside the rear cavity in a sealing way, so that a second resonance cavity is formed in the conical cover.
Further, the ratio of the diameter of the sleeve to the diameter of the tail pipe is 1.2-1.5, and the opening ratio of the side wall of the tail pipe is 9-15%.
Further, the side wall of the inner cylinder is provided with a plurality of third through holes; the aperture ratio of the side wall of the inner cylinder is 1.8-2.8%.
Further, the ratio of the diameter of the muffler cylinder body to the diameter of the inner cylinder is 1.05-1.10; the ratio of the diameter of the inner cylinder to the diameter of the middle tube is 2-3.
Further, both ends of the sleeve and the middle tube extend outwards along the axial direction and form a conical port after diameter reduction, and the front end of the front section of the middle tube is fixedly sleeved on the outer circle of the sleeve in a sealing manner.
Further, the ratio of the length of the middle pipe to the length of the tail pipe extending into the middle pipe is 3.5-4.5; the ratio of the length of the middle pipe to the length of the sleeve extending into the middle pipe is 4.5-5.5.
The invention also discloses a motorcycle provided with the silencer with the structure.
The beneficial effects of the invention are as follows: according to the muffler and the motorcycle thereof disclosed by the invention, the inner barrel is sleeved outside the inner pipe assembly in the muffler at intervals, and the side wall of the inner barrel is provided with the plurality of third through holes, so that the inner barrel can eliminate intermediate frequency sound waves in a middle-high frequency range, the loudness of the sound of an exhaust pipe is effectively reduced, the exhaust sound quality of the motorcycle is improved, and the loudness of the middle-high frequency range is reduced from 264sone to 254.8sone; meanwhile, the sharpness of the medium-high frequency area is reduced to 8.6acum from the original 9.9acum by the resonance cavity matched with the muffler, the loudness of the medium-high frequency area is reduced to 210.4 tone, the tone is greatly improved, the sound can be adjusted through the simple internal structure of the muffler, the noise elimination performance of the muffler is not reduced, the power performance of the engine is not influenced, and the cost of the muffler is effectively reduced.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
fig. 1 is a schematic structural view of the present invention.
Detailed Description
FIG. 1 is a schematic view of the structure of the muffler according to the present embodiment; the muffler comprises a muffler barrel body 1 and an inner connecting pipe assembly which is arranged in the muffler barrel body 1 and used for leading in and leading out waste gas, wherein an inner barrel 2 is arranged in the barrel body, and the inner connecting pipe assembly longitudinally penetrates through an inner cavity formed by the inner barrel 2.
In this embodiment, the side wall of the inner cylinder 2 is provided with a plurality of third through holes d; the aperture ratio of the side wall of the inner cylinder 2 is 1.8-2.8%, preferably 2.3%; the wall thickness of the inner cylinder is 1.3-1.7mm, preferably 1.5mm, so that the rigidity of the inner cylinder is improved, and the thin-wall vibration is inhibited; the diameter of the third through hole d is preferably 5mm, the inner cylinder 2 is arranged outside the connecting pipe assembly, and a plurality of third through holes d (only one of which is drawn and the other of which is not shown) are arranged on the side wall of the inner cylinder, so that the inner cylinder can eliminate sound waves of about 2700 Hz in a high frequency band, the loudness of the sound of an exhaust pipe is effectively reduced, the exhaust sound quality of a motorcycle is improved, and the loudness of a high frequency region is reduced from 264 tone to 254.8 tone.
In this embodiment, the inner joint pipe assembly includes a front pipe 3, a middle pipe 4 and a tail pipe 5, a perforated partition 6 for dividing the inner cavity of the middle pipe 4 into front and rear cavities is provided in the middle of the middle pipe 4, and a plurality of first through holes a are provided on the side wall of the middle pipe 4; the front pipe 3 and the tail pipe 5 are respectively and partially arranged in the front cavity and the rear cavity, the front pipe 3 comprises a front pipe section and a rear pipe section 3a which are arranged front and back, the front pipe section is positioned in the middle pipe, the side wall of the front pipe section is provided with a second through hole, the rear pipe section and the front pipe section are welded or integrally formed, the side wall of the front pipe 3 is provided with a plurality of second through holes b (the front pipe section positioned in the front pipe) and the rear port of the front pipe 3 is a plugging port; the liner 5 is sleeved with a sleeve 7 at intervals, a first resonance cavity is formed between the sleeve 7 and the liner 5, and a plurality of radial resonance holes c used for communicating the inner cavity of the liner 5 with the resonance cavity are formed in the side wall of the liner 5; the diameter of the radial resonance holes c is preferably 6mm, the number of the radial resonance holes c is 20 and 5 are in a row, and the radial resonance holes c are uniformly distributed in four rows along the circumference of the tail pipe 5; through set up the sleeve pipe at tail pipe 5 overcoat, first resonance cavity and tail pipe 5 pass through radial resonance hole c intercommunication, utilize the resonance cavity can eliminate high frequency sound wave, greatly reduced well high frequency region's sharpness, and then improve the sound quality of former silencer exhaust noise high frequency (2000-5000 Hz).
In this embodiment, the ratio of the diameter of the sleeve 7 to the diameter of the tail pipe 5 is 1.2-1.5, preferably 1.35; the aperture ratio of the side wall of the tail pipe 5 is 9-15%, preferably 12%, which is beneficial to improving the resonance effect of the resonance cavity, so that the high-frequency treatment frequency range is wide, and the tone quality is improved.
In this embodiment, the ratio of the diameter of the muffler cylinder 1 to the diameter of the inner cylinder is 1.05-1.10, preferably 1.07; the ratio of the diameter of the inner cylinder 2 to the diameter of the middle pipe 4 is 2-3, preferably 2.5, which is favorable for matching the resonance cavity with the inner cylinder 2, reduces the sharpness of a high-frequency region from original 9.9acum to 8.6acum, reduces the loudness of the high-frequency region to 210.4 sodium, and the muffler designed according to the proportion range is tested as shown in the table 1, and is favorable for reducing the loudness through the arrangement of the inner cylinder, but the sharpness is increased to some extent, and the resonance cavity under the parameter is arranged, so that the loudness and the sharpness are greatly reduced through matching the resonance cavity with the inner cylinder, the tone is greatly improved, and the power performance is not influenced.
Table 1 acoustic parameter comparison
In the embodiment, the front end of the inner cylinder is provided with a front baffle plate 8, and the middle pipe passes through the front baffle plate 8 and is supported on the front baffle plate; the front end of the silencer cylinder body forms a conical cover 10 with a small end facing forward, the rear end of the conical cover is fixed on the silencer cylinder body in a sealing way, the front end of the conical cover is fixed on the rear section of the front pipe outside the rear cavity in a sealing way, and part of the rear section of the middle pipe with a first through hole extends into the conical cover and is fixed on the rear section of the front pipe outside the rear cavity in a sealing way, so that a second resonance cavity is formed in the conical cover; the rear baffle 9 is fixedly arranged at the rear end of the inner cylinder in a sealing manner to seal and support, and the conical inner cavity 11 formed by the conical cover is beneficial to resonance through the arrangement of the front baffle, so that the silencing effect is improved, and the tone quality is integrally coordinated and optimized.
In this embodiment, the sleeve pipe and the both ends of well pipe form the toper port after outwards extending and reducing along the axial, the front end seal of well pipe anterior segment is fixed the overcoat in the telescopic excircle, and the toper port does benefit to sealedly, does benefit to simultaneously and optimizes the shape of first resonance chamber, improves resonance intensity.
In this embodiment, the ratio of the length of the middle pipe 4 to the length of the tail pipe 5 extending into the middle pipe 4 is 3.5-4.5; preferably 4, the ratio of the length of the middle tube to the length of the sleeve extending into the middle tube is 4.5-5.5, preferably 5; the resonance with the middle pipe 4 is facilitated, and the resonance intensity and the silencing effect are improved.
The invention also discloses a motorcycle, wherein the motorcycle is provided with the silencer with the structure; the muffler has low cost, high exhaust tone quality and pleasant motorcycle sound.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. A muffler, characterized in that: the muffler comprises a muffler cylinder body and an inner connecting pipe assembly which is arranged in the muffler cylinder body and used for leading in and leading out waste gas, wherein an inner cylinder is arranged in the cylinder body, and the inner connecting pipe assembly longitudinally penetrates through an inner cavity formed by the inner cylinder; the inner connecting pipe assembly comprises a front pipe, a middle pipe and a tail pipe, wherein the tail pipe is communicated with the middle pipe and used for introducing waste gas into the tail pipe, a sleeve is sleeved outside part of the tail pipe, a first resonance cavity is formed between the sleeve and the tail pipe, radial resonance holes used for communicating the inner cavity of the tail pipe with the first resonance cavity are formed in the side wall of the tail pipe corresponding to the sleeve, a front baffle is arranged at the front end of the inner cylinder, and the middle pipe penetrates through the front baffle and is supported on the front baffle; the front end of the silencer cylinder body forms a conical cover with a small head end facing forward, the rear end of the conical cover is fixed on the silencer cylinder body in a sealing mode, the front end of the conical cover is fixed on the rear section of the front pipe outside the rear cavity in a sealing mode, part of the rear section of the middle pipe with the first through hole stretches into the conical cover and is fixed on the rear section of the front pipe outside the rear cavity in a sealing mode to enable the conical cover to form a second resonance cavity, and a perforated partition plate used for dividing the middle pipe into the front section of the middle pipe and the rear section of the middle pipe is arranged in the middle of the middle pipe.
2. The muffler of claim 1, wherein: the inner cavities of the front section and the rear section of the middle pipe are respectively a front cavity and a rear cavity, and a plurality of first through holes are formed in the side wall of the middle pipe; the front pipe and the tail pipe are respectively and partially arranged in the front cavity and the rear cavity, a plurality of second through holes are formed in the side wall of the front pipe, and the rear port of the front pipe is a plugging port.
3. The muffler of claim 1, wherein: the ratio of the diameter of the sleeve to the diameter of the tail pipe is 1.2-1.5, and the opening ratio of the side wall of the tail pipe is 9-15%.
4. The muffler of claim 1, wherein: the side wall of the inner cylinder is provided with a plurality of third through holes; the aperture ratio of the side wall of the inner cylinder is 1.8-2.8%.
5. The muffler of claim 1, wherein: the ratio of the diameter of the silencer cylinder body to the diameter of the inner cylinder is 1.05-1.10; the ratio of the diameter of the inner cylinder to the diameter of the middle tube is 2-3.
6. The muffler of claim 5, wherein: the two ends of the sleeve and the middle pipe extend outwards along the axial direction and form a conical port after diameter reduction, and the front end of the front section of the middle pipe is fixedly sleeved on the outer circle of the sleeve in a sealing manner.
7. The muffler of claim 1, wherein: the ratio of the length of the middle pipe to the length of the tail pipe extending into the middle pipe is 3.5-4.5; the ratio of the length of the middle pipe to the length of the sleeve extending into the middle pipe is 4.5-5.5.
8. A motorcycle, characterized in that: the motorcycle is equipped with the muffler as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855540.1A CN107605571B (en) | 2017-09-20 | 2017-09-20 | Muffler and motorcycle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710855540.1A CN107605571B (en) | 2017-09-20 | 2017-09-20 | Muffler and motorcycle thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605571A CN107605571A (en) | 2018-01-19 |
| CN107605571B true CN107605571B (en) | 2023-08-25 |
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ID=61061650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710855540.1A Active CN107605571B (en) | 2017-09-20 | 2017-09-20 | Muffler and motorcycle thereof |
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| Country | Link |
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| CN (1) | CN107605571B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419492B (en) * | 2022-08-12 | 2024-01-26 | 成都天地直方发动机有限公司 | Anti-explosion diesel engine muffler device |
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| CN2057699U (en) * | 1989-09-04 | 1990-05-30 | 南昌飞机制造公司 | Motorcycle silencer |
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| CN202228158U (en) * | 2011-09-23 | 2012-05-23 | 安徽江淮汽车股份有限公司 | Light truck silencer |
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| CN107605571A (en) | 2018-01-19 |
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