KR200209076Y1 - Improvements in muffler for use in automobiles - Google Patents

Abstract

The present invention relates to an improvement of an automobile muffler, and more particularly, to an automobile muffler configured to provide excellent noise reduction while having excellent manufacturing and durability.

The present invention is a trapezoidal cross-sectional body 101 and the suction tube 102 and the discharge tube 103 of a porous tubular disposed inside the body 101 and a plurality of holes are formed, respectively, the body 101 And partition walls 104 and 105 for dividing the interior space into a plurality of space portions 106, 107, and 108, and exhaust gas from the engine passes through the suction pipe 102. All the muffler 100 and the trapezoidal cross-sectional body 201 and the suction pipe 202 and the discharge pipe 205 disposed inside the body 201 to be discharged into the discharge pipe 103 and the partition 105. ), A suction pipe resonate 203 having a sound absorbing material 204, a discharge pipe resonate 206 having a sound absorbing material 207, and a plurality of spaces 212 having an inner space in the body 201 with a plurality of holes. On the partitions 211 and 211, the partitions 211 and 211 divided into the (213) and 214 and the spaces 212 and 214 communicate with each other. It provides a muffler for cars, characterized in that, consisting of the combination structure of the rear muffler 200 is configured to include a by-pass arrangement probe tube 209.

Description

Muffler for car {IMPROVEMENTS IN MUFFLER FOR USE IN AUTOMOBILES}

The present invention relates to an improvement of a muffler installed and used as an exhaust noise reduction means in an automobile, and relates to an automobile muffler composed of a combination of a trapezoidal all muffler and a rear muffler.

Automotive muffler related to the present invention is usually composed of a combination of components such as porous tubule, bulkhead, straight pipe, sound absorbing material, resonate, etc. inside the tubular muffler body, the high-temperature, high-pressure explosion sound generated from the engine As the exhaust gas having the first pass through the front and rear muffler, the noise is reduced.

At present, the quality requirements of consumers for automobile mufflers are increasing day by day, but the structure of muffler is becoming more and more complicated. At the same time, making and providing a satisfactory muffler has become a very difficult problem.

The present invention has been researched and devised in this background, and its purpose is to provide a muffler for automobile which can provide a very effective and excellent noise attenuation effect through the acoustic tuning of the internal structure with good manufacturability and durability as an automobile muffler. will be.

1 is a front cross-sectional view of the entire muffler of the present invention,

Figure 2 is a side cross-sectional view of the muffler altogether,

Figure 3 is a cross-sectional side view of the other side of the muffler,

4 is a front sectional view of the rear muffler of the present invention;

Figure 5 is a side cross-sectional view of one side of the rear muffler,

6 is a side cross-sectional view of the other side of the rear muffler.

Explanation of symbols for major couples in drawings

100: all muffler 101: all muffler body 102: suction pipe

102a: suction pipe hole 103: discharge pipe 103a: discharge pipe hole

103b: Bellemouth 104,105: partition 104a, 105a: hole of the partition

106,107,108: space 200: rear muffler 201: rear muffler body

202: suction pipe 202a, 202b: suction pipe hole 203: suction pipe resonate

203a: suction pipe resonate hole 204, 207: sound absorbing material

205: discharge pipe 205a: discharge pipe hole 205b: bell mouse

206: discharge pipe resonate 206a: discharge pipe resonate hole

208: drain pipe 209: bypass tube

209a: bypass tube hole 210: support rod

211: partition 211a: partition hole 211b: condensate passage

212,213,214: Space Department

Hereinafter, the present invention for achieving the above object will be described in more detail with reference to the accompanying drawings.

1 to 3 of the accompanying drawings show the configuration of all the muffler 100 of the muffler of the present invention, Figures 4 to 6 show the configuration of the rear muffler 200 of the muffler of the present invention, respectively.

As illustrated in FIGS. 1 to 3, the muffler of the present invention has a trapezoidal cross-sectional body 101 and a suction tube 102 and a discharge tube 103 made of porous tubules disposed in the shape shown in the interior of the body 101. And a plurality of holes 104a and 105a each having a plurality of holes 104a and 105a formed therein, and exhaust gas from the engine is discharged into the partition 104 through the suction pipe 102. All the muffler 100 which is supposed to fall into the 103 and the partition 105,

4 to 6, the suction pipe having the trapezoidal cross-sectional body 201 and the suction pipe 202, the discharge pipe 205, and the sound absorbing material 204 disposed in the embodiment shown inside the body 201 is embedded. It comprises a resonate 203, a discharge pipe resonate 206 incorporating a sound absorbing material 207, partitions 211, 211, and the like, and comprises a resonate 203 through holes 202a of the suction pipe 202. The noise of the exhaust gas discharged to the portion is attenuated by some sound absorbing material 204, and the exhaust gas discharged through the rear end portion with the holes 202a of the suction pipe 202 is the hole 209a of the bypass tube 209. ) Through the holes 211a of the bulkheads 211 and the partition wall 211, and then attenuated the air through the discharge pipe 205 with the resonate 206 into which the sound absorbing material 207 was inserted. It consists of a combination of the rear muffler 200 configured to be discharged in the middle.

The inner space of the body 101 of the muffler 100 is divided into three spaces 106, 107, 108 due to the partition walls 104 and 105 installed inside the body 101. In addition, the inner space of the body 201 of the rear muffler 200 is also divided into three space parts 212, 213 and 214 due to the partition walls 211 and 211 installed inside the body 201. . In the entire muffler 100, the suction pipe 102 with the holes 102a has its rear end blocked by the partition 104, and the discharge pipe 103 with the holes 103a has its bell as shown in the distal end thereof. It forms the shape of the mouse 103b, and the rear end is in the state which goes through outward through the center part of an end plate. The rear end of the discharge pipe 103 of all the muffler 100 is connected to the front end of the suction pipe 202 of the rear muffler 200 through a normal exhaust pipe. In the figure, 203a shows holes of the suction pipe resonate 203 and 206a shows holes of the discharge pipe resonate 206.

Looking at the effect of the present invention configured as described above, the exhaust gas from the engine is first introduced into the suction pipe 102 of the muffler 100, the exhaust gas sucked into the porous suction pipe 102 is blocked end Noise is attenuated while falling into the space portion 106 through the suction pipe holes 102a, and again attenuated in the space portion 107 through the holes 104a of the partition 104 to discharge the discharge pipe 103 and the partition wall ( It is discharged through the holes 105a of 105. Exhaust gas entering the holes 105a of the partition 105 is attenuated once again in the space 108 and is discharged to the discharge pipe 103. The bell mouth 103b, which is an inlet of the discharge pipe 103, has a function of reducing flow noise. In this way, the exhaust gas having passed through the muffler 100 is expanded in the space 214 through the end of the suction pipe 202 and the suction pipe holes 202b which are not blocked by the rear muffler 200. In addition, attenuation of some noise is induced in the suction pipe resonate 203 in which the suction material 204 is embedded. The exhaust gas from which the noise is attenuated in the space 214 is transferred to the space 212 through the bypass tube 209 to induce expansion and attenuation of noise again. In addition, a part of the exhaust gas passing through the bypass tube 209 is reduced in the expansion noise in the space 213 through the bypass tube hole 209a. The exhaust gas reaching the space 212 is discharged into the atmosphere through the discharge pipe 205, and negative absorption also occurs in the discharge pipe resonate 206 in which the suction material 207 is embedded through the discharge pipe holes 205a. . The partitions 211 and 211 form the respective space portions 212, 213 and 214 and induce the flow of the exhaust gas through the holes 211a of these partitions to serve to reduce negative attenuation and exhaust pressure. .

In the muffler of the present invention, the condensed water generated by the cooling of the exhaust gas is collected in the space portion 212 through the condensate passage 211b and discharged to the discharge pipe 205 through the drain pipe 208, the discharge pipe ( 205) is designed to be located at the bottom of the muffler body to facilitate the discharge of condensate to prevent corrosion by conventional condensate. In addition, the partitions 211 and 211 are connected and supported by the supporting rods 210 to prevent deformation of the partitions. In addition, the tip portion formed in the shape of the bell mouse 205b of the discharge pipe 205 reduces the flow noise generated when the exhaust gas is discharged and plays a major role in attenuation of the noise.

Therefore, the present invention is a new useful effect that can provide a durable muffler with excellent noise attenuation action without causing a large difficulty in the production of such a muffler by the effective configuration, action as described above Will have.

Claims (3)

The trapezoidal cross-sectional body 101, the suction tube 102 and the discharge tube 103 of the porous tubular disposed inside the body 101, and a plurality of holes are formed, respectively, and the space inside the body 101 is formed. And partition walls 104 and 105 which divide the space into a plurality of spaces 106, 107, and 108, and exhaust gas from the engine flows into the partition 104 through the suction pipe 102. All the muffler 100 which is to be discharged to the discharge pipe 103 and the partition 105, A trapezoidal cross-sectional body 201, a suction pipe 202 and an discharge pipe 205 disposed inside the body 201, a suction pipe resonate 203 containing a sound absorbing material 204, a discharge pipe containing a sound absorbing material 207 Resonate 206, partition walls 211, 211 having a plurality of holes and dividing the interior space of the body 201 into a plurality of space portions 212, 213, 214, and the space portion ( Automotive muffler, comprising a combination of a rear muffler 200 including a bypass tube 209 disposed on the partitions 211 and 211 so as to communicate 212 and 214 with each other. . The discharge pipe 103 of the entire muffler 100 and the discharge pipe 205 of the rear muffler 200 are each configured to have a tip portion in the form of a bell mouse (103b) (205b). Car muffler. The muffler for automobile according to claim 1 or 2, wherein a condensate passage (211b) is formed under the body (201) of the rear muffler (200).