KR200307951Y1 - Improvement in automobile muffler - Google Patents

Abstract

The present invention relates to the provision of an automobile silencer configured to provide excellent noise action in an efficient and durable configuration, without difficulty in manufacturability and manufacturing cost, and to maintain a long service life.

The present invention and the resonator 100 by installing the porous tube 102 in the center of the circular body 101; The partitions 204 and 205 are installed in the circular body 201 so that the inner space of the body 201 is separated into the chambers 208, 209 and 210 by the partitions 204 and 205. The suction pipe 302 and the discharge pipe 203 are disposed along the center of the body 201, and the sound absorbing materials 206 and 207 are disposed around the suction pipe 202 and the discharge pipe 203. A muffler 200; The inner space of the triangular cylindrical body 301 is separated into chambers 311, 312 and 313 by partition walls 308 and 309 that form holes 308a and 309a. 301, a suction tube 302 having a semi-resonator 303 installed at an inlet portion, a discharge tube 304 having a sound absorbing material 305b and a resonator 305 having holes 305a around the body, and a porous type By-pass tubes 306 and 307 made of tubes are arranged, and the discharge pipe 304 is installed in close proximity to the bottom portion of the body 301 where the condensate passages 308b and 309b are installed. It provides a silencer for cars, characterized in that the configuration comprising a.

Description

Automotive Silencer {IMPROVEMENT IN AUTOMOBILE MUFFLER}

The present invention relates to an improvement of a muffler installed in an automobile, and more particularly, to an automobile silencer that is easy to manufacture while providing excellent noise action by a combination configuration of a resonator, a whole muffler and a rear muffler.

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.

Currently, the demand level of the demand for silencers of automobiles is increasing day by day, and the composition of silencers is becoming more and more complicated. The more complicated the configuration, the better the noise effect of the desired bar, but the more Difficult and costly production costs, and also a lot of weak spots for high-temperature and high-pressure exhaust gas is accompanied by problems such as frequent failures and shorter service life.

In other words, the conventional silencers for automobiles are relatively simple in construction and easy to manufacture, which is difficult to achieve the required level of noise effect, and the good noise effect is too complicated. There was this short issue.

The present invention has been devised in such a background, and its purpose is to show excellent noise effect through acoustic tuning of the internal structure of the silencer, and there is no great difficulty in terms of manufacturability and manufacturing cost, etc. It is to provide a long silencer for cars.

1 is a cross-sectional view of the resonator of the present invention, a fine front cross-sectional view, I side cross-sectional view,

Figure 2 is a cross-sectional view of the muffler of the present invention, a thin cross-sectional front view, I side cross-sectional view,

Figure 3 is a cross-sectional view of the rear muffler in the present invention, a thin front cross-sectional view, a front cross-sectional view I saw from another direction, a side cross-sectional view, a side cross-sectional view as seen from another direction.

Explanation of symbols on main parts of drawing

Reference Signs List 100 resonator 101 resonator body 102 porous tube

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

202a: suction pipe hole 202b: suction pipe end 203: discharge pipe

203a: discharge pipe hole 204,205: partition 206,207: sound absorbing material

208,209,210 Chamber 300 Rear muffler 301 Rear muffler body

302: suction pipe 302a, 302b: suction pipe hole 302c: suction pipe end

303: semi-resonator 303a: semi-resonator hole 304: discharge pipe

304a: inlet portion of the discharge pipe 305: discharge pipe resonator

305a: discharge pipe resonator hole 305b: sound absorbing material

306,307: bypass tube 306a, 307b: bypass tube hole

308,309 Bulkhead 308a, 309a Bulkhead Hole

308a, 309b: condensate passage 310: sound absorbing material

311,312,313: Chamber

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

The muffler for automobiles of the present invention consists of a combination of a resonator 100 as illustrated in FIG. 1, a total muffler 200 as illustrated in FIG. 2, and a rear muffler 300 as illustrated in FIG. 3. have.

The resonator 100 of FIG. 1 is a place where the primary damping action of the exhaust gas is first performed when the combustion exhaust gas from the automobile engine is first passed, and the porous tube 102 receives the high-pressure pulsating wave of the exhaust gas. The shock absorbing noise in the low speed section is attenuated, and the porous tube 102 is configured such that the cylindrical body 101 surrounds the annular space 103. Here, reference numerals 104 and 105 denote end plates for closing both ends of the body 101, respectively, and 106 denotes a connection bracket, respectively.

In the entire muffler 200 of FIG. 2, the partition walls 204 and 205 are installed in the cylindrical body 201 having both ends blocked by the end plates 211 and 212 so that the inner space of the body 201 is chamber 208. 209 and 210, the suction pipe 202 and the discharge pipe 203 is disposed in the illustrated embodiment along the center of the body 201, and the suction pipe 202 and the discharge pipe ( The sound absorbing materials 206 and 207 are arranged around the periphery of 203.

In the case of all the muffler 200, the exhaust gas from the above-described resonator 100 is introduced into the body 201 through the suction pipe 202, and the exhaust gas passes through the intermediate chamber 209 to the discharge pipe 203. The holes 202a formed in the chambers 208, 209 and 210 formed by the partition walls 204 and 205, the suction pipe 202 made of the porous tube, and the exhaust pipe 203 are discharged to the outside. Noise reduction by the interaction of the 203a, noise reduction by the sound absorbing materials 206 and 207, and the damping effect of the damping effect of the end portion 202b of the reduced diameter shaft portion are simultaneously and continuously performed. It is intended to exhibit excellent noise effect. In addition, by connecting the inlet of the discharge pipe 203 and the partition wall 205 to the portion 203b of the shape similar to the bell mouse, it is possible to reduce the flow noise of the exhaust gas.

On the other hand, the rear muffler 300 of FIG. 3 has a partition 308 and 309 having a plurality of holes 308a and 309a in the body 301 which is formed in a triangular cylindrical shape as a whole. The space is separated into chambers 311, 312, and 313, and the suction pipe 302, the discharge pipe 304, and the bypass tube 306, 307 are installed in the body 301 in the illustrated mode. It is made in such a way.

Semi-resonator 303 is provided in front of the suction pipe 302 of the rear muffler 300, the noise caused by the exhaust gas pulsating waves that have been passed without being reduced in all the muffler 200 described above are holes 303a Partially attenuated through the semi-resonator 303 in a double porous tube structure, and through the holes 302b of the suction pipe 302 and the end 302c of the suction pipe 302 chambers 312 and 313. As it expands into, further attenuation occurs. In addition, the exhaust gas noise once attenuated in the chamber 313 is transferred to the chamber 311 through the holes 306a and 307a of the bypass tubes 306 and 307 and the holes 308a of the partition wall 308. The noise attenuated once in the chamber 313 by exiting the end portion 302c of the suction pipe 302 is guided into the chamber 312 through the holes 309a of the partition 309, and thus attenuated again.

The sound absorbing material 310 is disposed in the chamber 312 so that the high frequency noise is greatly attenuated. The inlet portion 304a of the discharge pipe 304 having a bell mouse shape functions to reduce the flow noise of the exhaust gas. In addition, a resonator 305 including holes 305a and a sound absorbing material 305b is provided around the discharge pipe 304 to reduce sound absorption and partial flow noise due to interaction with the resonator 305. . In this way, the exhaust gas collected into the chamber 311 in the front of the state in which the noise is almost all attenuated is finally discharged to the atmosphere through the discharge pipe 304.

Further, the discharge pipe 304 of the rear muffler 300 is disposed close to the bottom of the muffler body 300, which is provided to the bottom of the rear muffler body 300 condensed water generated by the cooling of the exhaust gas In order to effectively discharge through the condensate passage 308b (309b), which is to minimize the corrosion problems caused by condensate.

The resonator 100, the entire muffler 200 and the rear muffler 300 are mounted to the vehicle in a state connected to each other through a conventional tube not shown here.

Therefore, the present invention provides an excellent noise effect by the effective combination of the resonator 100 and the entire muffler 200 and the rear muffler 300 as described above, while providing the effect of providing easy noise and maintaining a long service life. I have it.

Claims (1)

Resonator 100 by installing the porous tube 102 in the center of the circular body 101; The partitions 204 and 205 are installed in the circular body 201 so that the inner space of the body 201 is separated into the chambers 208, 209 and 210 by the partitions 204 and 205. The suction pipe 302 and the discharge pipe 203 are disposed along the center of the body 201, and the sound absorbing materials 206 and 207 are disposed around the suction pipe 202 and the discharge pipe 203. A muffler 200; The inner space of the triangular cylindrical body 301 is separated into chambers 311, 312 and 313 by partition walls 308 and 309 that form holes 308a and 309a. 301, a suction tube 302 having a semi-resonator 303 installed at an inlet portion, a discharge tube 304 having a sound absorbing material 305b and a resonator 305 having holes 305a around the body, and a porous type By-pass tubes 306 and 307 made of tubes are arranged, and the discharge pipe 304 is installed in close proximity to the bottom portion of the body 301 where the condensate passages 308b and 309b are installed. Automotive silencer characterized in that comprises a configuration.