CN215979553U

CN215979553U - Silencer of motorcycle

Info

Publication number: CN215979553U
Application number: CN202122651178.0U
Authority: CN
Inventors: 朱琰; 石帅; 钟浩; 高强; 王振宇
Original assignee: Juneng Motorcycle Technology Co ltd
Current assignee: Juneng Motorcycle Technology Co ltd
Priority date: 2021-10-30
Filing date: 2021-10-30
Publication date: 2022-03-08
Anticipated expiration: 2031-10-30

Abstract

The utility model belongs to the technical field of motorcycles, and relates to a muffler of a motorcycle, which comprises a muffler barrel, wherein a front partition plate and a rear partition plate are arranged in the muffler barrel, an inner cavity of the muffler barrel is divided into a first expansion chamber at the front end, a second expansion chamber at the rear end and a third expansion chamber in the middle, a vent pipe, a return pipe and a first muffling pipe which are sequentially connected are arranged in the muffler barrel, the vent pipe and the first muffling pipe penetrate through the first expansion chamber, the third expansion chamber and the second expansion chamber, the return pipe is positioned in the second expansion chamber, a catalyst carrier pipe positioned in the first expansion chamber is arranged on the vent pipe, a plurality of first pressure relief holes are formed in the rear end of the catalyst carrier pipe, and a plurality of second pressure relief holes are formed in the part, positioned in the first expansion chamber, of the front end of the first muffling pipe. The silencer of the motorcycle can effectively reduce noise, thereby improving the satisfaction of riders and reducing environmental noise pollution.

Description

Silencer of motorcycle

Technical Field

The utility model belongs to the technical field of motorcycles, and relates to a muffler of a motorcycle.

Background

A motorcycle silencer is a device that allows airflow to pass through to attenuate noise, and is one of the important parts on a motorcycle. The performance of the silencer not only affects the noise of the motorcycle, but also has great influence on the performance of the engine, such as power, oil consumption, torque and the like. Most of the existing motorcycle silencers are not good in structural design, and can not reasonably and effectively absorb tail gas exhausted by the operation of an engine and corresponding noise, so that the operation noise of the silencer is larger.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the silencer of the motorcycle, which can more effectively reduce noise, thereby improving the satisfaction degree of riders and reducing the environmental noise pollution.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

the utility model provides a muffler of motorcycle, includes the muffler barrel, be provided with preceding baffle and back baffle in the muffler barrel to cut apart into the first expansion chamber of front end, the second expansion chamber of rear end and the third expansion chamber at middle part with the barrel inner chamber, be provided with breather pipe, return venturi tube and the first hush pipe that connects gradually in the muffler barrel, the breather pipe runs through first expansion chamber, third expansion chamber and second expansion chamber with first hush pipe, it is located the second expansion chamber to return the venturi tube, be provided with the catalyst carrier pipe that is located first expansion chamber on the breather pipe, the rear end of catalyst carrier pipe is provided with a plurality of first pressure release holes, the part that first hush pipe front end is located first expansion chamber is provided with a plurality of second pressure release holes.

Preferably, the first pressure relief hole and the second pressure relief hole are circular through holes; preferably, the number of the first pressure relief holes is 2-4, and the first pressure relief holes are distributed along the circumferential direction; the number of the second pressure relief holes is 20-40, the second pressure relief holes are distributed in an array mode along the circumferential direction, and the aperture of each of the first pressure relief holes and the aperture of each of the second pressure relief holes are 4.5-5.5 mm.

In the above-described muffler for a motorcycle, a volume ratio of the first expansion chamber, the third expansion chamber, and the second expansion chamber is 5: 2: 3.

in the muffler for a motorcycle, the muffler cylinder is provided with a second muffler pipe connecting the first expansion chamber and the second expansion chamber, a third muffler pipe connecting the second expansion chamber and the third expansion chamber, and a tail pipe connecting the third expansion chamber and the outside.

In the muffler of the motorcycle, the front end of the third muffler pipe is connected with the front partition plate, and the third muffler pipe is provided with a plurality of third pressure relief holes and is communicated with the third expansion chamber through the third pressure relief holes.

Preferably, the third pressure relief hole is a circular through hole; preferably, the number of the third pressure relief holes is 100 and 200, and the third pressure relief holes are distributed along the circumferential direction in an array manner, and the aperture of each third pressure relief hole is 2.5-3.5 mm.

In the above muffler for a motorcycle, the front end of the muffler cylinder is provided with the front cover and the front cover liner, and the rear end of the muffler cylinder is provided with the rear cover and the rear cover liner.

In the silencer of the motorcycle, the inner wall of the silencer cylinder is covered with the sound-absorbing cotton, the thickness of the sound-absorbing cotton is 3-5mm, and the sound-absorbing cotton is arranged between the inner wall of the silencer cylinder and the screen plate.

The principle of the utility model for enhancing noise reduction is as follows: through increasing first pressure release hole, exhaust gas can escape a part gas earlier to first inflation room after catalyst carrier, through increasing second pressure release hole, exhaust gas can pass through the aperture position and expand in first inflation room rapidly, avoids because the extra noise that the inflation did not thoroughly cause. Through increasing the third pressure release hole for the gas of second expansion chamber slowly passes through little hole site and discharges to third expansion chamber, avoids because the gas of second expansion chamber gets into the extra noise that third expansion chamber caused fast.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model can reasonably and effectively absorb the tail gas discharged by the running of the engine and the corresponding noise by adding the multi-point silencing hole positions, and particularly can obviously reduce the running noise of the silencer, thereby improving the satisfaction of riders and reducing the environmental noise pollution.

2. The utility model improves the layout of the muffler cavity, improves the structure of the muffler barrel and further reduces the noise of the muffler during working.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a block diagram of the interior of the present invention;

reference numerals: 1. a muffler cylinder; 2. a front bulkhead; 3. a rear bulkhead; 4. a first expansion chamber; 5. a second expansion chamber; 6. a third expansion chamber; 7. a breather pipe; 8. a pipe is returned; 9. a first silencer duct; 10. a catalyst carrier tube; 11. a first pressure relief vent; 12. a second pressure relief vent; 13. a second muffler pipe; 14. a third muffler pipe; 15. a tail pipe; 16. a third pressure relief vent; 17. a front cover; 18. a front cover liner; 19. a rear cover; 20. and a rear cover liner.

Detailed Description

The utility model is further described in the following with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:

a silencer of a motorcycle comprises a silencer cylinder body 1, a front clapboard 2 and a rear clapboard 3 are arranged in the silencer cylinder body 1, and divides the inner cavity of the cylinder body into a first expansion chamber 4 at the front end, a second expansion chamber 5 at the rear end and a third expansion chamber 6 in the middle, a vent pipe 7, a clip pipe 8 and a first silencing pipe 9 which are connected in sequence are arranged in the silencer cylinder body 1, the vent pipe 7 and the first silencing pipe 9 penetrate through the first expansion chamber 4, the third expansion chamber 6 and the second expansion chamber 5, the return pipe 8 is positioned in the second expansion chamber 5, the breather pipe 7 is provided with a catalyst carrier pipe 10 positioned in the first expansion chamber 4, the muffler cylinder 1 is provided with a second silencing pipe 13 connecting the first expansion chamber 4 and the second expansion chamber 5, a third silencing pipe 14 connecting the second expansion chamber 5 and the third expansion chamber 6, and a tail pipe 15 connecting the third expansion chamber 6 and the outside.

The utility model adds a plurality of silencing hole sites: the rear end of the catalyst carrier tube 10 is provided with a plurality of first pressure relief holes 11, and the part of the front end of the first silencing tube 9, which is positioned in the first expansion chamber 4, is provided with a plurality of second pressure relief holes 12. Through increasing first pressure release hole 11, some gas will be escaped earlier to first expansion chamber 4 to exhaust tail gas after through catalyst carrier, through increasing second pressure release hole 12, exhaust tail gas can pass through the aperture position and expand in first expansion chamber 4 rapidly.

The first pressure relief hole 11 and the second pressure relief hole 12 are circular through holes; the number of the first pressure relief holes 11 is 2, the first pressure relief holes are distributed along the circumferential direction and are respectively positioned at the upper side and the lower side, and the aperture of each first pressure relief hole is 5 mm; the number of the second pressure relief holes 12 is 28, the second pressure relief holes are distributed along the circumferential direction in an array mode, and the aperture of each second pressure relief hole is 5 mm. Other numbers and apertures may be provided depending on the specifications of the silencer.

In addition to the first pressure relief hole 11 and the second pressure relief hole 12, a third pressure relief hole 16 is added to the third sound-deadening pipe 14 in the present embodiment, and the setting mode is as follows: the front end of the third silencing tube 14 is connected with the front clapboard 2, and the third silencing tube 14 is provided with a plurality of third pressure relief holes 16 and is communicated with the third expansion chamber 6 through the third pressure relief holes 16. By adding the third pressure relief hole 16, the gas in the second expansion chamber 5 is slowly discharged to the third expansion chamber 6 through the small hole.

The third pressure relief holes 16 are circular through holes, the third pressure relief holes 16 are provided with 132 pressure relief holes and distributed along the circumferential direction in an array manner, and the diameter of each third pressure relief hole 16 is 3 mm. Other numbers and apertures may be provided depending on the specifications of the silencer.

The embodiment further improves the layout of the silencer cavity: the volume ratio of the first expansion chamber 4, the third expansion chamber 6 and the second expansion chamber 5 is 5: 2: 3. to better reduce noise.

The structure of the silencer cylinder 1 is further improved in the embodiment:

the front end of the silencer cylinder 1 is provided with a front cover 17 and a front cover lining 18, and the rear end of the silencer cylinder 1 is provided with a rear cover 19 and a rear cover lining 20. The single-layer structure of the front cover 17 and the rear cover 19 of the existing silencer is improved into a double-layer structure, so that the escaping of noise in the cavity can be more effectively blocked.

The inner wall of the silencer cylinder body 1 is covered with sound-absorbing cotton, the thickness of the sound-absorbing cotton is 3-5mm, the sound-absorbing cotton is arranged between the inner wall of the silencer cylinder body 1 and the screen plate, the wall thickness of the cylinder body is increased, and the sound-absorbing material is thickened and filled in the sound-absorbing chamber to absorb exhaust sound, so that the aim of sound attenuation is achieved.

The working process of the embodiment is as follows: the exhaust tail gas enters the silencer through the vent pipe 7, sequentially flows through the vent pipe 7 (after passing through the catalyst carrier pipe 10, a part of gas escapes to the first expansion chamber 4 from the first pressure relief hole 11), the pipe 8 and the first silencing pipe 9, and enters the first expansion chamber 4 from the second pressure relief hole 12 and the front end of the first silencing pipe 9; the exhaust gas is expanded in the first expansion chamber 4, enters the second expansion chamber 5 through the second silencing pipe 13, enters the third expansion chamber 6 through the third pressure relief hole 16 on the third silencing pipe 14, and is finally discharged to the outside through the tail pipe 15.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. A silencer of a motorcycle comprises a silencer cylinder body (1), wherein a front partition plate (2) and a rear partition plate (3) are arranged in the silencer cylinder body (1), and an inner cavity of the cylinder body is divided into a first expansion chamber (4) at the front end, a second expansion chamber (5) at the rear end and a third expansion chamber (6) in the middle, the silencer is characterized in that a vent pipe (7), a return pipe (8) and a first silencing pipe (9) which are sequentially connected are arranged in the silencer cylinder body (1), the vent pipe (7) and the first silencing pipe (9) penetrate through the first expansion chamber (4), the third expansion chamber (6) and the second expansion chamber (5), the return pipe (8) is positioned in the second expansion chamber (5), a catalyst carrier pipe (10) positioned in the first expansion chamber (4) is arranged on the vent pipe (7), a plurality of first pressure relief holes (11) are arranged at the rear end of the catalyst carrier pipe (10), the part of the front end of the first silencing pipe (9) positioned in the first expansion chamber (4) is provided with a plurality of second pressure relief holes (12).

2. A silencer for motorcycles as claimed in claim 1, wherein said first pressure release holes (11) are provided in an amount of 2 to 4, circumferentially distributed; the number of the second pressure relief holes (12) is 20-40, the second pressure relief holes are distributed along the circumferential direction in an array mode, and the aperture of each of the first pressure relief holes (11) and the aperture of each of the second pressure relief holes (12) are 4.5-5.5 mm.

3. A silencer for motorcycles as claimed in claim 1, wherein the volume ratio of said first expansion chamber (4), said third expansion chamber (6) and said second expansion chamber (5) is 5: 2: 3.

4. a muffler for a motorcycle according to claim 1, wherein a second muffler pipe (13) connecting the first expansion chamber (4) and the second expansion chamber (5), a third muffler pipe (14) connecting the second expansion chamber (5) and the third expansion chamber (6), and a tail pipe (15) connecting the third expansion chamber (6) and the outside are provided in the muffler cylinder (1).

5. A silencer for motorcycles as claimed in claim 4, wherein said third silencing tube (14) is connected at its front end to the front partition (2), and the third silencing tube (14) is provided with a plurality of third pressure relief holes (16) and is communicated with the third expansion chamber (6) through the third pressure relief holes (16).

6. A silencer according to claim 5, wherein said third pressure release holes (16) are provided with 100 and 200 holes distributed in a circumferential array, and the diameter of said third pressure release holes (16) is 2.5-3.5 mm.

7. A muffler for a motorcycle according to claim 1, wherein the front end of the muffler shell (1) is provided with a front cover (17) and a front cover liner (18), and the rear end of the muffler shell (1) is provided with a rear cover (19) and a rear cover liner (20).

8. A silencer for a motorcycle according to claim 1, wherein the inner wall of the silencer cylinder (1) is covered with sound-absorbing cotton, and the thickness of the sound-absorbing cotton is 3-5 mm.