KR200449902Y1 - Muffler for Automobile - Google Patents

Abstract

The present invention relates to a muffler for an automobile composed of a total muffler and a rear muffler, and more specifically, the first, second, and third partition walls 206 inside the rear muffler body 201 provided with end plates 221 and 222. 207 and 208 are provided in this order, the 1st partition 206 is provided with the partition hole 206a, and the 3rd partition 208 is provided with the 3rd partition hole 208a; The suction pipe 202 through which the exhaust gas flows from the total muffler is sequentially passed through the first space 211, the second space 212, and the third space 213, and the outlet 202-Out is the fourth space 214. A suction pipe hole 2 (202b) is provided on an outer circumferential surface of the suction pipe 202 which is in communication with and is located in the third space 213; The bypass pipe 204 communicates the third space 213 and the second space 212; The inlet 203-In is fixed by the first diaphragm 206 to communicate with the first space 211, passing through the second space 212, the third space 213, and the fourth space 214. And a rear muffler (200) provided with a discharge pipe (203) composed of a U "-shaped curved pipe.

Silencer, Muffler, Suction Tube, Discharge Tube

Description

Car Muffler {Muffler for Automobile}

The present invention relates to an automobile silencer, and more particularly, to an automobile silencer that is easy to manufacture and maintains a long service life while providing an excellent noise reduction effect by a combination configuration of all mufflers and rear mufflers.

In an engine of an automobile using an engine of an internal combustion engine as a power source, since high-temperature, high-pressure exhaust gas is discharged with severe noise, a silencer is used as a means for reducing the exhaust noise and pressure of the exhaust gas. At present, the demand level of the demand for the silencer of automobiles is increasing day by day, and the composition of the silencer is becoming more and more complicated. The more complicated the configuration, the better the noise effect of the desired bar, but the more This difficult and costly production cost, and also has a number of vulnerable parts to the high-temperature, high-pressure exhaust gas, and the problems are frequent, such as the failure and shorten the service life. That is, the conventional silent silencers are relatively simple and easy to manufacture is difficult to achieve the required level of noise effect, and the good noise effect is too complicated and difficult to manufacture due to the complicated configuration and expensive manufacturing cost. There were frequent problems with short lifespans.

The present invention has been devised in this background, and its purpose is to show excellent noise reduction effect through acoustic tuning of the internal structure of the silencer, and without difficulty in terms of manufacturability and manufacturing cost, and also an efficient and durable configuration. The purpose is to provide a silencer for a car with a long service life.

Automobile silencer according to the present invention, in the silencer for automobile composed of all muffler and rear muffler,

The first, second, and third partition walls 206, 207, and 208 are sequentially provided inside the rear muffler main body 201 having the end plates 221 and 222, and the first partition wall 206 has a partition hole ( 206a, and the third partition 208 is provided with a third partition hole 208a;

A first space 211 is provided between the one end plate 221 and the first partition 206 having the suction pipe inlet 202 -In and the discharge pipe outlet 203 -Out, and the first partition 206 and A second space 212 is provided between the second partition walls 207, and a third space 213 is provided between the second partition wall 207 and the third partition wall 208, and the third partition wall 208 is provided. A fourth space 214 is provided between the second end plate and the other end plate;

The suction pipe 202 into which the exhaust gas flows from the all muffler is sequentially passed through the first space 211, the second space 212, and the third space 213, and the outlet 202-Out is the fourth space ( A suction pipe hole 2 202b is provided on an outer circumferential surface of the suction pipe 202 which is in communication with 214 and is located in the third space 213;

The bypass pipe 204 communicates the third space 213 and the second space 212;

The inlet 203-In is fixed by the first diaphragm 206 to communicate with the first space 211, through the second space 212, the third space 213, and the fourth space 214, It characterized in that it comprises a rear muffler 200 is provided with a discharge pipe 203 is a "U" shaped curved pipe.

According to the present invention solves the problems of the prior art, according to the present invention is easy to manufacture and maintain a long service life while providing excellent noise reduction effect by the combination of all the muffler and the rear muffler as described above An automobile silencer is provided.

By combining a plurality of small capacity mufflers, there is provided an automobile silencer that can effectively reduce exhaust noise of a vehicle having a large displacement while using a limited space at the bottom of the vehicle. A high performance automotive silencer is provided which is excellent in noise attenuation, productive and has only a moderate level of back pressure loss.

According to the present invention, an efficient exhaust noise attenuation path is formed by the arrangement of the bulkhead and the arrangement of the suction, discharge, bypass, and sound absorbing materials in a small-capacity muffler, and the length of the discharge pipe is increased to reduce noise without increasing the back pressure. Automotive silencers are provided to increase the effectiveness.

Hereinafter will be described in detail with reference to the accompanying drawings the configuration and operation of the vehicle silencer according to an embodiment of the present invention. 1 is a block diagram of an all-muffler of an automobile silencer according to an embodiment of the present invention, Figure 2 is a block diagram of a partition provided in all mufflers according to an embodiment of the present invention.

As shown in FIG. 1 or FIG. 2, the total muffler 100 has both ends closed with end plates 121 and 122 and a total muffler main body 101 in which the first partition 104 is vertically provided in the inner space. And a sound absorbing material 105 filled in the space inside the total muffler main body 101, and a suction / discharge pipe 103 formed through the total muffler main body 101 and having suction and discharge pipe holes 103a and 103a 'formed on an outer circumferential surface thereof. And meshes 103b and 103b 'surrounding the suction and discharge tube holes 103a and 103a'. The mesh is preferably made of stainless steel.

As for all muffler 100, the partition wall hole 104a is provided in the 1st partition 104, the 1st space 106 and the 2nd space 107 are communicated, and all the muffler 100 is a suction and discharge pipe | tube. Exhaust noise passing through the 103 is diffused and attenuated into the space 106 and the space 107 through the intake and discharge pipe holes 103a and 103a ', and enters the space 106 and the space 107. The high frequency component of the noise is further attenuated by the sound absorbing material 105.

Figure 3 is a configuration of the rear muffler according to an embodiment of the present invention, Figure 4 is a configuration of the first partition wall of the rear muffler according to an embodiment of the present invention, Figure 5 is a rear muffler according to an embodiment of the present invention Second partition wall configuration, Figure 6 is a third partition wall configuration of the rear muffler according to an embodiment of the present invention.

 The rear muffler 200 includes a rear muffler main body 201 having first end plates 221 and 222, first, second and third partition walls 206, 207, and 208, suction pipes 202, and bypass pipes 204. , 205), and a discharge pipe 203 including a "U" shaped curved pipe.

As illustrated in FIG. 3, first, second, and third partition walls 206, 207, and 208 are sequentially provided in the rear muffler main body 201 having the end plates 221 and 222. As shown in FIGS. 4 and 6, the first partition 206 is provided with a partition hole 206a, and the third partition 208 is provided with a third partition hole 208a.

A first space 211 is provided between the one end plate 221 and the first partition 206 having the suction pipe inlet 202 -In and the discharge pipe outlet 203 -Out, and the first partition 206 and The second space 212 is provided between the second partition walls 207. A third space 213 is provided between the second partition wall 207 and the third partition wall 208, and a fourth space 214 is provided between the third partition wall 208 and the other end plate 222. .

The suction pipe 202 through which the exhaust gas flows from the all muffler is sequentially passed through the first space 211, the second space 212, and the third space 213, and the outlet 202-Out is the fourth space 214. ), The suction pipe hole 2 (202b) is provided on the outer circumferential surface of the suction pipe 202 located in the third space (213).

An outer circumferential surface of the suction pipe 202 located in the second space 212 is provided with a suction pipe hole 1 202a, and the suction pipe hole 1 202a and the first space 211 and the second space 212 in communication therewith. The specific frequency noise is attenuated by the action of, and the opening area formed by the suction pipe holes 1 (202a) is preferably 0.01 to 0.1 times the cross-sectional area of the suction pipe. If the open area is too large, the effect of the specific frequency is reduced, and if the open area is too small, the effect of reducing the specific frequency noise is reduced.

The bypass pipe 204 communicates the third space 213 and the second space 212. It is preferable that two bypass pipes 204 are provided in the second partition 207. The number of bypass pipes is preferably 1 to 2 in consideration of productivity, noise characteristics, and back pressure characteristics.

In the discharge pipe 203, the inlet 203-In is fixed by the first diaphragm 206 to communicate with the first space 211, and the second space 212, the third space 213, and the fourth space ( 214) is configured to include a "U" curved pipe.

The discharge pipe 203 includes a straight discharge pipe upstream part 251 passing through the second space 212 and the third space 213, a curved pipe part 253 located in the fourth space, the third space 213 and the second space. It consists of a straight discharge pipe downstream part 255 through the space 212 and the first space 211.

The silencer for automobiles of the present invention is attenuated while the noise of the exhaust gas introduced through the inlet 202-In of the suction pipe is diffused into the third space 213 through the suction pipe hole 2 202b, and the outlet 202- Attenuates while being diffused into the fourth space 214 through Out). Noise of the exhaust gas of the third space 213 is attenuated while passing through the bypass pipe 204 and diffused into the second space 212. After the exhaust gas of the second space passes through the first partition 206 and moves to the first space, the exhaust gas flows into the discharge pipe 203 through the discharge pipe inlet 203 -In and is discharged to the outside along the pipe.

Support rods 209 and 210 are provided between the barrier ribs to prevent deformation of the barrier ribs, and the inlet of the bypass pipe 204 is of the bell mouth 204a or 205a type having an extended end portion to reduce the flow noise of the exhaust gas. Do.

Hereinafter will be described in detail the operation according to the configuration of the vehicle silencer according to an embodiment of the present invention. The present invention relates to a muffler which is an automobile exhaust noise attenuation component, and is composed entirely of a muffler and a rear muffler. Each of the front and rear mufflers consists of straight pipes, porous tubes, regulators, bypass pipes, curved pipes, etc., and noise is attenuated by exhaust gas from the engine passing through the front and rear silencers. As the performance of automobiles develops and the quality of noise and vibration demanded by consumers increases, the interior of the muffler is being matched with various and complicated structures.

The muffler for automobiles of the present invention is attenuated while the noise of the exhaust gas introduced through the inlet 202-In of the suction pipe is diffused into the third space 213 through the suction pipe hole 2 202b, and also the outlet 202. Attenuates while spreading to the fourth space 214 through -Out). Noise of the exhaust gas of the third space 213 is attenuated while passing through the bypass pipe 204 and diffused into the second space 212. After the exhaust gas of the second space passes through the first partition 206 and moves to the first space, the exhaust gas flows into the discharge pipe 203 through the discharge pipe inlet 203 -In and is discharged to the outside along the pipe.

The muffler of the present invention is to attenuate the sound while passing through the muffler 100, and then to further attenuate the negative in the rear muffler 200 to discharge the exhaust gas to the atmosphere, all of the muffler main body 101 inside Exhaust sound expands to the spaces 105 and 106 through the suction and discharge pipe holes 102a to lower the sound pressure, and at the same time, the sound absorbing material 104 contained in the spaces 105 and 106 attenuates the noise in the high frequency region. In order to prevent the radiation of 104, the stainless steel mesh 102b was used for the intake and discharge pipe holes 102a. The partition 103 secures the internal suction and discharge pipes 102 and the entire muffler main body 101 to reduce radiation noise, and maximizes the partition hole 103a in order to make the best use of the spaces 105 and 106 of the main body 102. .

In the rear muffler main body 201, the high temperature and high pressure exhaust gas that enters through the suction port 202 first enters the space 212 through the suction hole 202a, whereby a specific frequency noise is attenuated, and the space through the suction hole 202b. Entering (213), noise reduction is performed at the same time. The exhaust gas entering the final space 214 cancels the sound of a specific frequency while moving to the space 213 through the partition hole 208a of the partition 208 after the noise is attenuated by the diffusion, and the two bypass pipes Moving to the next space 212 through 204 and 205 to attenuate the noise. The exhaust gas collected in the space 211 goes out into the atmosphere through the discharge pipe 203. The length of the discharge pipe is long and the U-pipe is used to gradually reduce the noise due to the pressure drop as the exhaust gas is passed through the long passage. Finally, the noise was reduced in the high frequency region by passing through the resonator 203b.

The support rods 209 and 210 of the present invention are intended to prevent deformation of the partition wall during the manufacture of the muffler, and the bell mouths 204a and 205a of the bypass pipe play an important role in reducing the flow noise of the exhaust gas.

Although the present invention has been described with reference to the above-mentioned preferred embodiments, the scope of the present invention is not limited to these embodiments, the scope of the present invention is defined by the claims below and equivalent scope of the present invention It will include various modifications and variations belonging to.

The reference numerals set forth in the claims below are merely to aid the understanding of the invention and do not affect the interpretation of the scope of the claims, and the scope of the claims should not be construed narrowly.

1 is a schematic diagram of an all-muffler of an automobile silencer according to an embodiment of the present invention.

Figure 2 is a partition configuration diagram provided in all mufflers according to an embodiment of the present invention.

Figure 3 is a rear muffler configuration according to an embodiment of the present invention.

Figure 4 is a first partition wall configuration of the rear muffler according to an embodiment of the present invention.

5 is a second partition wall configuration of the rear muffler according to an embodiment of the present invention.

Figure 6 is a third partition wall configuration of the rear muffler according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: all muffler 101: all muffler body

102: suction and discharge pipe 102a: suction and discharge pipe hole

102b: stainless steel mesh 103: bulkhead-1

103a: partition hole 104: sound absorbing material

105, 106: space

200: rear muffler 201: rear muffler body

202: suction pipe 202a: suction pipe hole 1

202b: Suction tube hole 2 203: Drain tube

203a: discharge pipe hole 203b: discharge pipe resonator

203c: Sound absorbing material 204: Bypass pipe 1

205: Bypass pipe 2 204a, 205a: Bell mouse

206, 207, and 208: first, second and third partition walls 206a and 208a partition wall holes

209, 210: support rod

211, 212, 213, 214: first, second, third, and fourth spaces

Claims (7)

In the silencer for automobile composed of all muffler and rear muffler, The first, second, and third partition walls 206, 207, and 208 are sequentially provided inside the rear muffler main body 201 having the end plates 221 and 222, and the first partition wall 206 has a partition hole ( 206a, and the third partition 208 is provided with a third partition hole 208a; A first space 211 is provided between the one end plate 221 and the first partition 206 having the suction pipe inlet 202 -In and the discharge pipe outlet 203 -Out, and the first partition 206 and A second space 212 is provided between the second partition walls 207, and a third space 213 is provided between the second partition wall 207 and the third partition wall 208, and the third partition wall 208 is provided. A fourth space 214 is provided between the second end plate and the other end plate; The suction pipe 202 into which the exhaust gas flows from the all muffler is sequentially passed through the first space 211, the second space 212, and the third space 213, and the outlet 202-Out is the fourth space ( A suction pipe hole 2 (202b) is provided on an outer circumferential surface of the suction pipe 202 which is in communication with 214 and is located in the third space 213; The bypass pipe 204 communicates the third space 213 and the second space 212; The inlet 203-In is fixed by the first diaphragm 206 to communicate with the first space 211, through the second space 212, the third space 213, and the fourth space 214, Silencer for a vehicle, characterized in that it comprises a rear muffler (200) is provided with a discharge pipe (203) containing a "U" shaped curved pipe. The method of claim 1, The all muffler 100, Both ends are finished with end plates 121 and 122, and the main muffler body 101 having the first partition wall 104 vertically provided in the inner space, and the sound absorbing material 105 filled in the space inside the all muffler body 101. ), A suction / exhaust tube 103 which penetrates the main muffler main body 101 and has suction and discharge tube holes 103a and 103a 'formed on an outer circumferential surface thereof, and a mesh surrounding the suction and discharge tube holes 103a and 103a'. 103b, 103b '). delete delete The method of claim 1, The bypass pipe 204 is provided with two silencers for the second partition wall (207), characterized in that. The method of claim 1, The discharge pipe 203 includes a straight discharge pipe upstream part 251 passing through the second space 212 and the third space 213, a curved pipe part 253 located in the fourth space, and a third space 213 and a third space. A silencer for automobiles, comprising a straight discharge pipe downstream portion 255 passing through two spaces 212 and a first space 211. The method of claim 1,  Support rods 209 and 210 are provided between the partition walls to prevent deformation of the partition walls. Muffler for automobiles, characterized in that the inlet of the bypass pipe (204) is of the bell mouth (204a, 205a) type of the end is expanded to reduce the flow noise of the exhaust gas.

Images