CN109026281A

CN109026281A - A kind of automobile-used exhaust silencer of motor

Info

Publication number: CN109026281A
Application number: CN201810823962.5A
Authority: CN
Inventors: 侯献军; 王友恒; 何喆
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2018-12-18
Anticipated expiration: 2038-07-25
Also published as: CN109026281B

Abstract

The present invention proposes a kind of automobile-used exhaust silencer of motor, including noise elimination cylinder, air inlet pipe and tailpipe, air inlet pipe tail portion penetrates on the left of noise elimination cylinder, tailpipe tail portion is pierced by the right side of noise elimination cylinder, by being equipped at intervals with vertical first in silencing pot body, second, third partition is divided into first from left to right, second, third, 4th chamber, the through-hole of support air inlet pipe is respectively equipped on partition, second, the first hush pipe is equipped between third partition, connection second, 4th chamber, the second hush pipe of perforation setting in first partition, connection first, second chamber, first, third hush pipe is equipped between second partition, connection first, third chamber, third partition is equipped with the through-hole of support tailpipe, the head of tailpipe is located in third chamber.The present invention can be realized multistage noise reduction, and noise is effectively reduced.

Description

A kind of automobile-used exhaust silencer of motor

Technical field

The invention belongs to the technical field of motorcycle more particularly to a kind of automobile-used exhaust silencers of motor.

Background technique

Motorcycle is as a kind of easy to operate, small volume and less weight small vehicles, either in rural area or city, all It is applied more and more widely.For silencer as an essential accessory on motorcycle, the size of acoustical absorptivity is certain The quality of motorcycle quality is also reflected in degree.Meanwhile as motorcycle fan, pursuing, speed is irritating simultaneously, It is stimulated in order to avoid being formed to ear, it is also desirable to reduce noise.The acoustical absorptivity for how improving noise eliminator of motorcycle is vast life Produce producer and consumer's urgent problem to be solved.And the exhaust silencer of current motorcycle then has a single function, it can not basis The hobby and gear of driver carries out differentiated control, can not adapt to different races and daily demand.

Summary of the invention

Disappear the technical problem to be solved by the invention is to solve the above problems providing a kind of motor automobile exhaust gas Sound device is equipped with multistage noise reduction, noise is effectively reduced.

The technical proposal adopted by the invention to solve the above technical problems is that: a kind of automobile-used exhaust silencer of motor, it is special Sign is, including noise elimination cylinder, air inlet pipe and tailpipe, and the air inlet pipe tail portion penetrates on the left of the noise elimination cylinder, institute It states tailpipe tail portion to be pierced by the right side of noise elimination cylinder, the first, second, third vertical partition is equipped at intervals in silencing pot body, Noise elimination cylinder is divided into the first, second, third, fourth chamber from left to right, is distinguished on first, second, third partition Equipped with the through-hole for supporting air inlet pipe, it is equipped with the first hush pipe between second, third partition, passes through first hush pipe and is connected to institute State the second, the 4th chamber, the second hush pipe of perforation setting in first partition, be connected to described first by second hush pipe, Second chamber is equipped with third hush pipe between the first, second partition, is connected to first, third chamber by the third hush pipe, Third partition is equipped with the through-hole of support tailpipe, and the head of tailpipe is located in third chamber.

According to the above scheme, the air inlet pipe tail portion is the S-shaped bend pipe of bending twice, and the S-shaped bend pipe is in the silencing pot Internal arranged distribution from the bottom up.

According to the above scheme, lower layer's horizontal tube of the S-shaped bend pipe includes divergent segment from left to right, expansion arc and tapered Section, the divergent segment are located in the first chamber, and the expansion arc is located in second, third described chamber, the converging transition In third chamber.

According to the above scheme, the part that the upper layer horizontal tube of the S-shaped bend pipe is located in the second chamber is evenly distributed with sound attenuation hole.

According to the above scheme, first hush pipe and the coaxial arrangement of the second hush pipe.

According to the above scheme, the aperture of the third hush pipe is less than the air inlet pipe and the first hush pipe.

According to the above scheme, the tail portion of the tailpipe is arranged diagonally downward, the setting of exhaust outlet corresponding ground.

The beneficial effects of the present invention are: provide a kind of automobile-used exhaust silencer of motor, will be eliminated the noise cylinder by three pieces of partitions Four chambers are divided, and are respectively communicated with different chambers by three hush pipes, and by the special construction of air inlet pipe, realize more Secondary gas expansion loss sound energy has multistage erasure effect；Sound attenuation hole is set in air inlet pipe, improves low frequency acoustical absorptivity；Originally disappear Sound device have the characteristics that it is simple and practical in structure, implement that simple, noise elimination effect is good, at low cost, win the market competition for enterprise product Power.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of one embodiment of the invention.

Fig. 2 is the noise elimination inner barrel structural schematic diagram of one embodiment of the invention.

Fig. 3 is the fractionation schematic diagram of the noise elimination inner barrel structure of one embodiment of the invention.

Specific embodiment

For a better understanding of the invention, with reference to the accompanying drawings and examples to further description of the present invention.

As shown in Figure 1-Figure 3, the automobile-used exhaust silencer of a kind of motor, including noise elimination cylinder 1, air inlet pipe 2 and tailpipe 3, air inlet pipe tail portion penetrates on the left of noise elimination cylinder, and tailpipe tail portion is pierced by the right side of noise elimination cylinder, interval in silencing pot body Equipped with vertical first partition 7, second partition 8, third partition 9, noise elimination cylinder is divided into first, second, from left to right Three, the 4th chamber is respectively equipped with the through-hole of support air inlet pipe on the first, second, third partition, sets between second, third partition There is the first hush pipe 4, the second, the 4th chamber is connected to by the first hush pipe, the second hush pipe 5 of perforation setting in first partition, It is connected to first, second chamber by the second hush pipe, third hush pipe 6 is equipped between the first, second partition, passes through third Hush pipe is connected to first, third chamber, and third partition is equipped with the through-hole of support tailpipe, and the head of tailpipe is located at the In three chambers.

Air inlet pipe tail portion is the S-shaped bend pipe of bending twice, S-shaped bend pipe arranged distribution from the bottom up in silencing pot body.S-shaped Lower layer's horizontal tube of bend pipe includes divergent segment 10, expansion arc 11 and converging transition 12 from left to right, and divergent segment is located at first chamber Interior, expansion arc is located in second, third chamber, and converging transition is located in third chamber.

The upper layer horizontal tube of S-shaped bend pipe is located at the part in second chamber and is evenly distributed with sound attenuation hole 13.

First hush pipe and the coaxial arrangement of the second hush pipe.

The aperture of third hush pipe is less than air inlet pipe and the first hush pipe.

The tail portion of tailpipe is arranged diagonally downward, the setting of exhaust outlet corresponding ground.Exhaust gas is discharged after silencer, by Tailpipe influences, and sprays to the ground of obliquely downward, and exhaust gas is avoided to be sprayed onto other people, vehicle, improves safety.

After the exhaust gas of engine enters noise elimination cylinder from air inlet pipe, process is as follows: exhaust gas most of first is in S-shaped bend pipe Experience expansion for the first time is in lower layer's horizontal tube to be lost sound energy, reduce noise, upper layer horizontal tube of the fraction exhaust gas from S-shaped bend pipe Upper uniformly distributed sound attenuation hole is dispersed into second chamber, carries out second of expansion so that sound energy is lost, reduces noise；Then most of useless Gas enters the 4th chamber by air inlet pipe, carries out third time expansion so that sound energy is lost, reduces noise；Most of exhaust gas reverses through First hush pipe enters second chamber, with before fraction exhaust gas can and, undergo the 4th time expansion be lost sound energy, reduction make an uproar Sound is then passed through the second hush pipe and enters first chamber, undergoes the 5th expansion sound energy is lost, reduces noise, passes through later Third hush pipe enters third chamber, undergoes the 6th expansion so that sound energy is lost, reduces noise, final exhaust gas is arranged from tailpipe Out, multistage noise reduction is undergone, noise is effectively reduced.

Above is only presently preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this, Therefore the equivalence changes done according to scope of the present invention patent, still belong to protection scope of the present invention.

Claims

1. a kind of automobile-used exhaust silencer of motor, which is characterized in that including noise elimination cylinder, air inlet pipe and tailpipe, it is described into Tracheae tail portion penetrates on the left of the noise elimination cylinder, and the tailpipe tail portion is pierced by the right side of noise elimination cylinder, in silencing pot body It is equipped at intervals with the first, second, third vertical partition, noise elimination cylinder is divided into first, second, third, fourth from left to right Chamber is respectively equipped with the through-hole of support air inlet pipe on first, second, third partition, and the is equipped between second, third partition One hush pipe is connected to the second, the 4th chamber by first hush pipe, the second noise reduction of perforation setting in first partition Pipe is connected to first, second chamber by second hush pipe, is equipped with third hush pipe between the first, second partition, leads to It crosses the third hush pipe and is connected to first, third chamber, third partition is equipped with the through-hole of support tailpipe, tailpipe Head is located in third chamber.

2. the automobile-used exhaust silencer of a kind of motor according to claim 1, which is characterized in that the air inlet pipe tail portion is folding Curved S-shaped bend pipe twice, S-shaped bend pipe arranged distribution from the bottom up in the silencing pot body.

3. the automobile-used exhaust silencer of a kind of motor according to claim 2, which is characterized in that the lower layer of the S-shaped bend pipe Horizontal tube includes divergent segment, expansion arc and converging transition from left to right, and the divergent segment is located in the first chamber, described swollen Swollen section is located in second, third described chamber, and the converging transition is located in third chamber.

4. the automobile-used exhaust silencer of a kind of motor according to claim 3, which is characterized in that the upper layer of the S-shaped bend pipe The part that horizontal tube is located in the second chamber is evenly distributed with sound attenuation hole.

5. the automobile-used exhaust silencer of a kind of motor according to claim 1, which is characterized in that first hush pipe and The coaxial arrangement of two hush pipes.

6. the automobile-used exhaust silencer of a kind of motor according to claim 1, which is characterized in that the hole of the third hush pipe Diameter is less than the air inlet pipe and the first hush pipe.

7. the automobile-used exhaust silencer of a kind of motor according to claim 1, which is characterized in that the tail portion of the tailpipe It is arranged diagonally downward, the setting of exhaust outlet corresponding ground.