KR200209078Y1 - 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 consists of a trapezoidal cross-sectional body 101, a suction tube 102 made of a series of porous tubules disposed inside the body 101, a bulkhead 103 without a hole, and a sound absorbing material 104. The muffler 100, the body 201 having a triangular cross section, the suction tube 202 and the discharge tube 204 disposed inside the body 201, the bypass tube 203 having the holes 203a, and the sound absorbing material ( 206, comprising partitions 207, 208 having a plurality of holes 207a, 208a to divide the interior space of the body 201 into a plurality of spaces 209, 210, 211. Provided is a car muffler, characterized in that consisting of a combination of the rear muffler (200).

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 attenuation means in an automobile, and relates to an automobile muffler composed of a combination of a trapezoidal all muffler and a triangular 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, consumer's required quality level of automobile muffler is getting higher and higher, and the structure of muffler is getting more and more complicated. However, considering the overall design and manufacturing conditions of the automobile, it is suitable for the automobile. 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,

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

Figure 4 is a side cross-sectional view of one side of the rear muffler,

Figure 5 is a side cross-sectional view of the other side of the rear muffler.

Explanation of symbols on main parts of drawing

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

102a, 102b: suction pipe hole 103: partition 104: sound absorbing material

200: rear muffler 201: rear muffler body 202: suction pipe

202a: suction tube hole 203: bypass tube

203a: bypass tube hole 204: discharge pipe

204a: outlet pipe hole 204b: bell mouse 204c: connection pipe

205: support rod 206: sound absorbing material 207, 208: partition wall

207a, 208a: bulkhead hole 207b, 208b: condensate passage 209, 210, 211: space part

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

1 to 2 of the accompanying drawings show the configuration of all the muffler 100 of the muffler of the present invention, and FIGS. 3 to 5 show the configuration of the rear muffler 200 of the muffler of the present invention, respectively.

The muffler of the present invention has a trapezoidal cross-sectional body 101 as shown in Figs. 1 to 3 and a suction tube 102 and a hole made of a series of porous tubules arranged in the form shown in the interior of the body 101. And a partition 103 and a sound absorbing material 104 which are free of charge, and noise of exhaust gas from the engine is discharged into the body 101 through the holes 102a and 102b of the suction pipe 102. All mufflers 100 which are to be attenuated by 104,

As shown in Figs. 3 to 5, there is a triangular cross-sectional body 201, a suction tube 202 and an outlet tube 204, and a plurality of holes 203a, which are arranged in the embodiment shown inside the body 201. The rear muffler 200 includes a bypass tube 203, a sound absorbing material 206, partition walls 207 and 208 having a plurality of holes 207a and 208a, and the like.

The inner space of the body 201 of the rear muffler 200 is divided into three spaces 209, 210 and 211 due to the partition walls 207 and 208 installed inside the body 201. . In the rear muffler 200, the distal end of the discharge pipe 204 is located in the space portion 211 in the form of a bell mouse 204b, and the middle portion of the discharge pipe 204 is located in the space portion 210. A long connection is provided through the U-shaped connecting pipe 204c having the holes 204a to exhaust the exhaust gas in a state of attenuating a specific frequency exhibited by the exhaust noise. In the figure, 205 denotes a support rod, and 207b and 208b denote condensate passages.

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 entering the series of porous suction pipe 102 is the suction pipe hole The sound of the high frequency is attenuated by the sound absorbing material 104 surrounding the surroundings while being discharged into the body 101 through the 102a and 102b, and the partition 103 separates the suction pipe 102 and the muffler body 101 from each other. Support and improve durability.

The exhaust gas that has passed through the muffler 100 in this way passes through the suction pipe 202 where the end of the rear muffler 200 is blocked, exits the suction pipe holes 202a, expands in the space 209, and then bypasses the tub. It re-expands in the space portion 211 via the web 203 to reduce the noise. Exhaust gas entering the discharge pipe 204 from the space 211 is discharged into the atmosphere through the U-shaped porous connecting pipe 204c, the sound absorbing material 206 is disposed in the space 210 partition wall 207 The high frequency noise coming through the holes 207a and 208a of the 208 is attenuated.

In the muffler of the present invention, the condensed water generated by the cooling of the exhaust gas is collected in the space portion 211 through the condensate passages 207b and 208b and discharged to the discharge pipe 204, and the discharge pipe 204 is muffled. Designed and manufactured to be located at the bottom of the body to facilitate the discharge of condensate to prevent corrosion by conventional condensate. In addition, the partitions 207 and 208 are connected and supported by the supporting rods 205 to prevent deformation of the partitions. In addition, the tip portion formed in the shape of the bell mouse 204b of the discharge pipe 204 reduces the flow noise generated when the exhaust gas is discharged and plays a major role in the attenuation of the noise. In addition, the discharge pipe 204 is elongated through the U-shaped connecting pipe 204c having a plurality of holes 204a to attenuate a specific frequency in the exhaust noise.

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

Claims (3)

It comprises a trapezoidal cross-sectional body 101, a suction tube 102 made of a series of porous tubing disposed inside the body 101, an unbroken partition 103, and a sound absorbing material 104. Exhaust gas is discharged into the body 101 through the holes 102a and 102b of the suction pipe 102 and all the mufflers 100 are configured to be attenuated by the sound absorbing material 104, Body 201 having a triangular cross-sectional shape, suction tube 202 and discharge tube 204 disposed inside the body 201, bypass tube 203 having a plurality of holes 203a, sound absorbing material 206, a plurality of And partition walls 207 and 208 for dividing the internal space of the body 201 into a plurality of space portions 209, 210 and 211 with holes 207a and 208a of the suction pipe. 202 is installed to communicate with the space portion 209 through the holes 202a with the end blocked, and the sound absorbing material 206 is a combination configuration of the rear muffler 200 disposed in the space 210. Car muffler, characterized in that consisting of. The discharge pipe 204 of the rear muffler 200 has a tip portion in the form of a bell mouse 204b located in the space portion 211, and an intermediate portion of the discharge pipe 204 is a space portion 210. Automotive muffler, characterized in that the connection is installed through the U-shaped connecting pipe (204c) of the porous body. The automobile muffler according to claim 1 or 2, wherein condensate passages (207b) and (208b) are formed under the body (201) of the rear muffler (200).