CN214533134U

CN214533134U - Silencer of large-displacement motorcycle

Info

Publication number: CN214533134U
Application number: CN202023185558.1U
Authority: CN
Inventors: 黄彬; 任强; 杨凤文; 周青春; 邓疆
Original assignee: Chongqing Zongshen Innovation Technology Research Institute Co Ltd
Current assignee: Chongqing Zongshen Innovation Technology Research Institute Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-29
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a silencer of large discharge capacity motorcycle, its characterized in that: including the inlet connection, touch media, first amortization package, tail pipe, first amortization package includes left cavity, right cavity, back cavity, it is located to touch the media in the cavity of a left side, separate through the median septum between left cavity and the right cavity, it has a plurality of sound holes of inhaling to distribute on left side cavity and the right cavity inner wall, back cavity pass through the exhaust inner cup with left cavity, right cavity cut off, the back cavity intussuseption is filled with and inhales the sound cotton, the trompil has on the exhaust inner cover, the last second amortization package that has of tail pipe the air inlet of second amortization package is provided with the reposition of redundant personnel valve block. The beneficial effects of the utility model include: the structure can meet the common requirement that the power conversion efficiency of the engine on the finished automobile is about 90 percent, the accelerating noise of the motorcycle meets the national standard of less than or equal to 80dA, the heat load of the engine is reduced, the maximum speed of the finished automobile is increased, and the oil consumption is reduced.

Description

Silencer of large-displacement motorcycle

Technical Field

The utility model relates to a motorcycle blast pipe field, concretely relates to silencer of big discharge capacity motorcycle.

Background

The motorcycle silencer is an indispensable component of a motorcycle and has the function of purifying and silencing exhaust gas discharged by an engine. The silencer of the motorcycle in the prior art is mainly a barrel type silencer and mainly an impedance composite silencer, and the silencer structure is only suitable for the motorcycle with small displacement or medium displacement. If the power conversion agent is applied to a large-displacement motorcycle, the output power and the torque of an engine of the motorcycle are seriously influenced, and the power conversion efficiency of the engine on the finished motorcycle is generally about 80 percent after tests; and the motorcycle acceleration noise can not meet the requirement that the national standard is less than or equal to 80 dA.

Disclosure of Invention

To the weak point among the above-mentioned prior art, the utility model provides a silencer of big discharge capacity motorcycle, its power conversion efficiency that is favorable to improving the engine and reduce exhaust noise.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a silencer of a large-displacement motorcycle is characterized in that: the air inlet pipe joint is connected with the touch medium, the touch medium is arranged in the first noise reduction bag, the first noise reduction bag comprises a left cavity, a right cavity and a rear cavity, the touch medium is positioned in the left cavity, the left cavity and the right cavity are separated by a middle partition plate, a plurality of sound absorption holes are distributed on the inner walls of the left cavity and the right cavity, the rear cavity is positioned behind the left cavity and the right cavity, the rear cavity is separated from the left cavity and the right cavity by an inner exhaust cover, sound absorption cotton is filled in the rear cavity, an opening is formed in the inner exhaust cover and is right opposite to the exhaust end of the touch medium, two air inlet pipes communicating the left cavity and the right cavity are arranged on the middle partition plate, and the exhaust tail pipe is connected on the first noise reduction bag, and the right chamber is directly communicated with the exhaust tail pipe, a second silencing bag is arranged on the exhaust tail pipe, and a flow dividing valve plate is arranged at an air inlet of the second silencing bag.

Further, it includes the catalyst and is used for the catalyst installation section of thick bamboo of parcel catalyst to touch the medium, wherein the inlet end of a catalyst installation section of thick bamboo through admit air the connecting pipe with the end of giving vent to anger of inlet pipe joint is connected, the end of giving vent to anger of a catalyst installation section of thick bamboo is uncovered, a catalyst installation section of thick bamboo still supports the setting through the catalyst support frame in the left side cavity.

Further, the first silencing bag comprises a shell structure formed by combining an air inlet outer cover, a left shell, a right shell and an air outlet outer cover, wherein asbestos fillers are arranged on the inner sides of the left shell and the right shell, an inner screen plate is arranged on the inner side of each asbestos filler, and a plurality of sound absorption holes are formed in the local part of the inner screen plate.

Further, the inner side of the air inlet outer cover is provided with an air inlet inner cover, and the outer edges of the air inlet inner cover and the air outlet inner cover are provided with supporting platforms for supporting the inner net plate.

Further, the second silencing bag comprises a shell structure formed by sequentially connecting a conical barrel, an outer barrel and a tail cover, the shell structure further comprises an air flow channel structure formed by sequentially connecting an exhaust pipe, an inner net barrel and a tail pipe, the flow dividing valve plate is arranged at the air outlet end of the exhaust pipe, a plurality of sound absorbing holes are uniformly distributed in the inner net barrel, an annular cavity is formed between the inner net barrel and the outer barrel, and the tail barrel is filled with an asbestos filler in the annular cavity.

Further, a net cylinder supporting plate for supporting the inner net cylinder and the tail pipe is arranged on the inner side of the tail cover.

Furthermore, the splitter valve plate is provided with a plurality of splitter holes distributed in an annular shape.

Further, tail pipe still includes tail section of thick bamboo connecting pipe, tail section of thick bamboo connecting pipe inlet end stretches into in the right side cavity, the end of giving vent to anger of tail section of thick bamboo connecting pipe pass through the joint with the second amortization package is connected.

Furthermore, the air outlet end of the tail cylinder connecting pipe extends into the joint, a graphite lining is arranged between the outer wall of the tail cylinder connecting pipe and the inner wall of the joint, and a hoop is arranged on the outer side of the joint.

Furthermore, the air inlet pipe joint comprises an upper cover of the air inlet pipe joint and a lower cover of the air inlet pipe joint which are buckled up and down, and the air inlet end of the air inlet pipe joint is provided with two air inlets.

The beneficial effects of the utility model include: the structure can meet the common requirement that the power conversion efficiency of the engine on the finished automobile is about 90 percent, the accelerating noise of the motorcycle meets the national standard of less than or equal to 80dA, the heat load of the engine is reduced, the maximum speed of the finished automobile is increased, and the oil consumption is reduced.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the present invention;

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

FIG. 3 is a cross-sectional view B-B of FIG. 2;

fig. 4 is an exploded schematic view of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

A silencer of a large-displacement motorcycle as shown in figures 1-4 comprises an air inlet pipe joint 1, a contact medium 2, a first silencing bag 3 and an exhaust tail pipe 4, wherein the air inlet pipe joint 1 is connected with the contact medium 2. The tactile medium 2 is arranged in the first sound-damping package 3. The first sound-damping package 3 comprises a left chamber a in which the tactile medium 2 is located, a right chamber b, a rear chamber c. The left chamber a and the right chamber b are separated by a middle partition plate 9. It has a plurality of sound holes to inhale to distribute on left cavity a and the right cavity b inner wall, back cavity c is located the rear of left cavity a and right cavity b, back cavity c cuts off with left cavity a, right cavity b through exhaust inner cup 6, back cavity c intussuseption is filled with and inhales the sound cotton, the position that just is touching the exhaust end of media 2 on the exhaust inner cup 6 has the trompil, be provided with two intake pipes 7 that communicate left cavity a and right cavity b on the median septum 9, tail pipe 4 is connected on first amortization package 3, and directly communicate with right cavity b, tail pipe 4 is last to have second amortization package 5, be provided with flow divider piece 8 at the air inlet of second amortization package 5. The working principle of the invention is that the waste gas of the engine enters from the air inlet pipe joint 1, firstly is purified by the contact medium 2, the air flow is sprayed into the first silencing bag 3, the air flow firstly impacts the inner exhaust cover 6, but because the part of the inner exhaust cover 6, which is opposite to the exhaust end of the contact medium 2, is provided with the hole, the sound-absorbing cotton filled in the rear cavity c can play a certain role of buffering and absorbing sound to the air flow, then the waste gas enters the right cavity b from the left cavity a through the middle partition board 9, because the inner walls of the left cavity a and the right cavity b are provided with the plurality of sound-absorbing holes, the sound can be further absorbed, when the air flow is discharged from the right cavity b and enters the exhaust tail pipe 4, the air flow is firstly buffered and shunted through the shunt valve plate 8 arranged at the air inlet of the second silencing bag 5, the sound is further absorbed through the second silencing bag 5, then the air flow is discharged out of the atmosphere, and the noise is extremely small, completely meets the national standard.

As shown in fig. 1 and 4, in the present embodiment, the catalyst 2 includes a catalyst 20 and a catalyst mounting cylinder 21 for wrapping the catalyst 20, wherein an air inlet end of the catalyst mounting cylinder 21 is connected to an air outlet end of the air inlet pipe joint 1 through an air inlet connecting pipe 22, the air outlet end of the catalyst mounting cylinder 21 is open, and the catalyst mounting cylinder 21 is further supported and disposed in the left chamber a through a catalyst support frame 23.

As shown in fig. 2 and 4, the first sound-absorbing bag 3 of the present embodiment includes a housing structure composed of an air inlet outer cover 31, a left housing 33, a right housing 34, and an air outlet outer cover 35, wherein the inner sides of the left housing 33 and the right housing 34 are both provided with asbestos filler 36, the inner side of the asbestos filler 36 is provided with an inner mesh plate 37, and a plurality of sound-absorbing holes are locally formed on the inner mesh plate 37. The inner side of the air inlet outer cover 31 is provided with an air inlet inner cover 32, and the outer edges of the air inlet inner cover 32 and the air outlet inner cover 6 are provided with support tables for supporting the inner mesh plate 37.

As shown in fig. 2 and 4, the second muffling package 5 includes a housing structure formed by connecting a conical cylinder 51, an outer cylinder 52, and a tail cover 53 in sequence, and the housing structure further includes an airflow channel structure formed by connecting an exhaust pipe 54, an inner cylinder 55, and a tail pipe 56 in sequence, wherein the shunt valve sheet 8 is disposed at an air outlet end of the exhaust pipe 54, the inner cylinder 55 is uniformly provided with a plurality of sound absorbing holes, an annular cavity is formed between the inner cylinder 55 and the outer cylinder 52, and the annular cavity is filled with a tail cylinder asbestos filler 57.

Further, a net drum support plate 58 supporting the inner net drum 55 and the tail pipe 56 is provided inside the tail cover 53.

As shown in fig. 3, the flow dividing valve plate 8 has a plurality of flow dividing holes 81 distributed annularly. The air flow through the diverter blade 8 will be divided into several streams.

As shown in fig. 2 and 4, the tail pipe 4 further includes a tail cylinder connecting pipe 41, an air inlet end of the tail cylinder connecting pipe 41 extends into the right chamber b, and an air outlet end of the tail cylinder connecting pipe 41 is connected with the second sound-deadening bag 5 through a joint 42.

Further, the air outlet end of the transition piece connecting pipe 41 extends into the joint 42, a graphite lining 43 is arranged between the outer wall of the transition piece connecting pipe 41 and the inner wall of the joint 42, and an anchor ear 44 is arranged outside the joint 42.

As shown in fig. 4, in order to adapt to a two-cylinder or four-cylinder engine with large displacement, the intake pipe joint 1 of the present embodiment is composed of an intake pipe joint upper cover and an intake pipe joint lower cover which are fastened up and down, and the intake end of the intake pipe joint 1 has two intake ports.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.

Claims

1. A silencer of a large-displacement motorcycle is characterized in that: the air inlet pipe joint comprises an air inlet pipe joint (1), a contact medium (2), a first silencing bag (3) and an exhaust tail pipe (4), wherein the air inlet pipe joint (1) is connected with the contact medium (2), the contact medium (2) is arranged in the first silencing bag (3), the first silencing bag (3) comprises a left cavity (a), a right cavity (b) and a rear cavity (c), the contact medium (2) is positioned in the left cavity (a), the left cavity (a) and the right cavity (b) are separated through a middle partition plate (9), a plurality of sound absorption holes are distributed on the inner walls of the left cavity (a) and the right cavity (b), the rear cavity (c) is positioned behind the left cavity (a) and the right cavity (b), the rear cavity (c) is separated from the left cavity (a) and the right cavity (b) through an exhaust inner cover (6), and sound absorption cotton is filled in the rear cavity (c), the exhaust device is characterized in that a hole is formed in the position, opposite to the exhaust end of the contact medium (2), of the inner exhaust cover (6), two air inlet pipes (7) communicated with a left cavity (a) and a right cavity (b) are arranged on the middle partition plate (9), the tail exhaust pipe (4) is connected to the first silencing bag (3) and directly communicated with the right cavity (b), the tail exhaust pipe (4) is provided with a second silencing bag (5), and a flow dividing valve plate (8) is arranged at an air inlet of the second silencing bag (5).

2. A muffler for a large-displacement motorcycle according to claim 1, wherein: touch media (2) including catalyst (20) and be used for wrapping up catalyst installation section of thick bamboo (21) of catalyst (20), wherein the inlet end of a catalyst installation section of thick bamboo (21) through admit air connecting pipe (22) with the end connection of giving vent to anger of inlet pipe joint (1), the end of giving vent to anger of a catalyst installation section of thick bamboo (21) is uncovered, a catalyst installation section of thick bamboo (21) still support the setting through catalyst support frame (23) in left side cavity (a).

3. A muffler for a large-displacement motorcycle according to claim 1, wherein: the first silencing bag (3) comprises a shell structure formed by combining an air inlet outer cover (31), a left shell (33), a right shell (34) and an air outlet outer cover (35), wherein asbestos fillers (36) are arranged on the inner sides of the left shell (33) and the right shell (34), an inner screen plate (37) is arranged on the inner side of each asbestos filler (36), and a plurality of sound absorption holes are formed in the local part of the inner screen plate (37).

4. A muffler for a large-displacement motorcycle according to claim 3, wherein: the inner side of the air inlet outer cover (31) is provided with an air inlet inner cover (32), and the outer edges of the air inlet inner cover (32) and the air outlet inner cover (6) are provided with support tables for supporting the inner mesh plate (37).

5. A muffler for a large-displacement motorcycle according to claim 1, wherein: second amortization package (5) include by awl section of thick bamboo (51), outer barrel (52), tail-hood (53) connect gradually the shell structure of back constitution, this shell structure still includes by blast pipe (54), interior net section of thick bamboo (55), tail pipe (56) connect gradually the air current channel structure of back constitution, shunt valve block (8) set up in the end of giving vent to anger of blast pipe (54), the equipartition has a plurality of sound holes of inhaling on interior net section of thick bamboo (55), interior net section of thick bamboo (55) with annular cavity has between outer barrel (52), fills tail section of thick bamboo asbestos filler (57) in this annular cavity.

6. The muffler of a large-displacement motorcycle as set forth in claim 5, wherein: and a net cylinder supporting plate (58) for supporting the inner net cylinder (55) and the tail pipe (56) is arranged on the inner side of the tail cover (53).

7. A muffler for a large-displacement motorcycle according to claim 1 or 5, wherein: the splitter valve plate (8) is provided with a plurality of annularly distributed splitter holes (81).

8. A muffler for a large-displacement motorcycle according to claim 1, wherein: the tail pipe (4) further comprises a tail cylinder connecting pipe (41), the air inlet end of the tail cylinder connecting pipe (41) extends into the right chamber (b), and the air outlet end of the tail cylinder connecting pipe (41) is connected with the second silencing bag (5) through a connector (42).

9. A muffler for a large displacement motorcycle according to claim 8, wherein: the air outlet end of the tail cylinder connecting pipe (41) extends into the connector (42), a graphite lining (43) is arranged between the outer wall of the tail cylinder connecting pipe (41) and the inner wall of the connector (42), and a hoop (44) is arranged on the outer side of the connector (42).

10. A muffler for a large-displacement motorcycle according to claim 1, wherein: the air inlet pipe joint (1) is composed of an upper cover and a lower cover which are buckled up and down, and the air inlet end of the air inlet pipe joint (1) is provided with two air inlets.