KR100882655B1 - Muffer - Google Patents

Muffer Download PDF

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Publication number
KR100882655B1
KR100882655B1 KR1020070085383A KR20070085383A KR100882655B1 KR 100882655 B1 KR100882655 B1 KR 100882655B1 KR 1020070085383 A KR1020070085383 A KR 1020070085383A KR 20070085383 A KR20070085383 A KR 20070085383A KR 100882655 B1 KR100882655 B1 KR 100882655B1
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KR
South Korea
Prior art keywords
chamber
muffler
exhaust pipe
exhaust gas
rear chamber
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KR1020070085383A
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Korean (ko)
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박기철
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현대자동차주식회사
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Priority to KR1020070085383A priority Critical patent/KR100882655B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/06—Throttling-expansion and interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

A muffler is provided to absorb high frequency noise of exhaust gas whereby a plurality of penetration holes are formed on a single side baffle partitioning off the chamber and glass wool is filled in the front chamber. A muffler comprises two baffles(2a,2b) dividing a housing(1) into a front chamber, a rear chamber and a middle chamber, an inlet pipe(3) which passes through the two baffles and has a plurality of holes connected with the middle chamber, and an outlet pipe(4) having a U shape passing through the chambers. The outlet pipe includes a neck(4a) having a relatively small diameter on one end. A through hole is formed on the baffle partitioning off the front chamber and the middle chamber. Glass wool(5) is filled in the front chamber.

Description

머플러{Muffer}Muffler {Muffer}

본 발명은 차량에 사용되는 머플러에 관한 것으로, 특히 출구 배기파이프에서 공명실 효과를 극대화할 수 있도록 한 머플러에 관한 것이다.The present invention relates to a muffler used in a vehicle, and more particularly, to a muffler that can maximize the resonance chamber effect in the outlet exhaust pipe.

종래 차량의 배기장치는 엔진의 배기가스를 엔진의 외부로 유도하는 배기매니폴드와, 상기 배기매니폴드에 일단이 연결되면서 타단은 차체의 길이 방향을 따라 차체의 후방으로 연장되어 차체에 지지되는 배기파이프, 상기 배기파이프의 연장 경로에 설치된 촉매컨버터와 머플러(소음기) 등을 구비하고 있다.BACKGROUND ART Exhaust systems of a conventional vehicle include an exhaust manifold for guiding exhaust gas of an engine to the outside of the engine, and an end of which is connected to the exhaust manifold and the other end is extended to the rear of the vehicle along the longitudinal direction of the vehicle to be supported by the vehicle. And a catalytic converter and a muffler (silencer) provided in an extension path of the pipe and the exhaust pipe.

상기 머플러는 배기관 도중에 팽창실을 설치하여 내벽간의 음파 반사나 공명 현상을 이용하여 배기소음을 감쇠하거나 배기가스의 통로에 음파와의 마찰에 의해 음향에너지를 줄이는 흡음재를 사용하는 것도 있다.The muffler may be provided with an expansion chamber in the middle of the exhaust pipe to attenuate exhaust noise using sound wave reflections or resonance phenomena between inner walls, or to use a sound absorbing material that reduces acoustic energy by friction with sound waves in a passage of the exhaust gas.

도 1에는 종래 기술에 따른 차량의 고마력 엔진용 소형 머플러의 일례를 단면으로 도시한 것인 바, 즉 밀폐된 머플러 하우징(11)의 내부에는 2개의 배플(12a,12b)이 소정간격을 두고 일체로 장착되어 머플러 하우징(11)의 내부를 전방 챔버와 중간 챔버 및 후방 챔버인 3개의 챔버로 구획지우고, 입구 배기파이프(13)는 머플러 하우징(11)의 전방면을 관통하여 상기 2개의 배플(12)을 순차적으로 관 통해서 후방 챔버까지 연장되게 설치되고, 상기 입구 배기파이프의 상기 중간 챔버에 위하는 부위에는 배기가스 유출구 역할을 하는 다수개의 관통구멍이 형성되어 있다.FIG. 1 is a cross-sectional view showing an example of a small muffler for a high horsepower engine of a vehicle according to the prior art, that is, two baffles 12a and 12b are spaced inside the sealed muffler housing 11 at predetermined intervals. It is integrally mounted to partition the interior of the muffler housing 11 into three chambers, a front chamber, an intermediate chamber and a rear chamber, and an inlet exhaust pipe 13 penetrates the front surface of the muffler housing 11 to form the two baffles. (12) is sequentially installed to extend through the tube to the rear chamber, and a plurality of through holes are formed in a portion of the inlet exhaust pipe, which serves as an exhaust gas outlet.

그리고 출구 배기파이프(14)는 U자 형상을 하고서 그 일단은 배기가스 유입구로서 상기 중간 챔버와 연통되게 설치되는 반면에 타단은 배기가스 출구로서 상기 전방 챔버를 경유하여 후방 챔버까지 연장되게 설치되고, 상기 전방 챔버에는 글라스 울(15)이 충진되어, 상기 전방 배플(12a)에는 전방 챔버와 중간 챔버를 연통시키는 다수개의 관통구멍이 형성되어 있다.And the outlet exhaust pipe 14 is U-shaped and one end is installed to communicate with the intermediate chamber as the exhaust gas inlet, while the other end is installed to extend to the rear chamber via the front chamber as the exhaust gas outlet, Glass wool 15 is filled in the front chamber, and the front baffle 12a is formed with a plurality of through holes for communicating the front chamber with the intermediate chamber.

이에 따라 도 1에 도시한 바와 같이 상기 입구 배기파이프(13)를 통해 머플러 내부로 배기가스가 유입되어 입구 배기파이프의 관통구멍을 통해 상기 중간 챔버로 유입된 다음에 상기 출구 배기파이프를 따라서 U자 형상의 경로로 경유한 후에 상기 출구 배기파이프의 출구를 통해 머플러의 외부로 배출되게 된다.Accordingly, as shown in FIG. 1, the exhaust gas flows into the muffler through the inlet exhaust pipe 13, enters the intermediate chamber through the through hole of the inlet exhaust pipe, and then U-shaped along the outlet exhaust pipe. After passing through the path of the shape is discharged to the outside of the muffler through the outlet of the outlet exhaust pipe.

이러한 배기가스의 머플러 내부에서 유동과정에 상기 글라스 울(15)은 배기가스의 고주파 소음을 흡수하여 저감시키고, 상기 후방 챔버는 헬름홀츠 소음기 기능을 하도록 하여 높은 에너지의 저주파 연소음을 저감시키게 된다.The glass wool 15 absorbs and reduces the high frequency noise of the exhaust gas while the muffler of the exhaust gas flows, and the rear chamber functions as a Helmholtz silencer to reduce high energy low frequency combustion sounds.

그러나 상기와 같은 종래의 고마력 엔진용 소형 머플러에서는 배기가스의 소음 저감에 한계가 있어서 고마력 고용량의 엔진에는 배기가스의 소음이 크기 때문에 적용하기가 미흡하다고 하는 결점이 있었다.However, in the conventional small muffler for high horsepower engines as described above, there is a limitation in reducing noise of the exhaust gas, and therefore, the engine of high horsepower high capacity engine has a drawback that it is insufficient to apply the exhaust gas.

이에 본 발명은 상기한 사정을 감안하여 안출된 것으로, 콤팩트한 구조를 가지고서 배기가스의 유동소음을 최소화시키면서 공명실 효과를 극대화하여 배기가스의 저주파 및 고주파 소음을 효과적으로 저감하여 고마력 고용량의 엔진에 적용할 수 있도록 한 머플러를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above circumstances, and has a compact structure to maximize the resonance chamber effect while minimizing the flow noise of the exhaust gas, thereby effectively reducing the low frequency and high frequency noise of the exhaust gas to a high horsepower high capacity engine. The purpose is to provide a muffler for application.

상기와 같은 목적을 달성하기 위한 본 발명은, 밀폐된 머플러 하우징의 내부를 전방 챔버와 후방 챔버 및 중간 챔버로 구획지우도록 장착된 2개의 배플, 상기 머플러 하우징의 내부로 삽입되어 상기 2개의 배플을 순차적으로 관통해서 상기 후방 챔버까지 연장되어 막혀지고 상기 중간 챔버와 연통하도록 다수개의 관통구멍이 형성된 입구 배기파이프, 일단이 상기 후방 챔버와 연통하도록 설치됨과 더불어 타단은 상기 후방 챔버로부터 전방 챔버까지 연장된 다음에 다시 후방 챔버로 연장됨과 더불어 상기 중간 챔버와 연통하도록 다수개의 관통구멍이 형성된 출구 배기파이프를 갖추고 있다.The present invention for achieving the above object, the two baffles are mounted to partition the interior of the sealed muffler housing into the front chamber, the rear chamber and the intermediate chamber, inserted into the muffler housing to the two baffles An inlet exhaust pipe which is sequentially penetrated to the rear chamber and is blocked and is formed to communicate with the intermediate chamber, one end of which is installed to communicate with the rear chamber and the other end extends from the rear chamber to the front chamber It is then equipped with an outlet exhaust pipe extending into the rear chamber and having a plurality of through-holes in communication with the intermediate chamber.

바람직하기로는 상기 출구 배기파이프의 일단이 다른 부위보다 직경이 상대적으로 작은 네크부를 형성하는 것을 특징으로 한다.Preferably, one end of the outlet exhaust pipe forms a neck portion having a diameter smaller than that of the other portion.

이상 설명한 바와 같이 본 발명에 따른 머플러에 의하면, 배기가스의 출구 역할을 하는 후방 챔버에서 공명실 역할을 하도록 하여 공명실 효과의 극대화를 통한 저주파 고에너지의 엔진 연소음을 효과적으로 줄일 수 있고, 전방 챔버에 글라스 울을 적용하여 배기가스의 고주파 소음 저감 및 음질 개선을 도모할 수 있으며, 중간 챔버에서 배기가스의 유로의 팽창 및 축소의 변화를 통해 배기가스 소음을 전반적으로 감쇄시킬 수 있는 등의 효과가 있다.As described above, according to the muffler according to the present invention, by acting as a resonance chamber in the rear chamber that serves as the outlet of the exhaust gas, it is possible to effectively reduce the low-frequency high-energy engine combustion noise through the maximization of the resonance chamber effect, The glass wool can be applied to reduce the high frequency noise and improve the sound quality of the exhaust gas, and to reduce the overall exhaust noise noise by changing the expansion and contraction of the exhaust gas flow path in the intermediate chamber. have.

이하 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2에는 본 발명에 따른 머플러가 단면으로 도시되어 있는 바, 밀폐된 머플러 하우징(1)의 내부에는 2개의 배플(2a,2b)이 소정간격을 두고 일체로 장착되어 머플러 하우징(1)의 내부를 전방 챔버와 중간 챔버 및 후방 챔버인 3개의 챔버로 구획지우도록 되어 있다.2 shows a muffler according to the present invention in cross section, in the interior of the sealed muffler housing 1 two baffles 2a and 2b are integrally mounted at predetermined intervals to form an interior of the muffler housing 1. Is divided into three chambers, a front chamber, an intermediate chamber and a rear chamber.

입구 배기파이프(3)는 머플러 하우징(1)의 전방면을 관통하여 상기 2개의 배플(12)을 순차적으로 관통해서 후방 챔버까지 연장되게 설치되고, 상기 입구 배기파이프(3)의 상기 중간 챔버에 위치하는 부위에는 배기가스 유출구 역할을 하는 다수개의 관통구멍이 형성되어 입구 배기파이프를 통해 유입된 배기가스는 상기 관통구멍을 통해 상기 중간 챔버로 유출되게 되며, 상기 입구 파이프(3)의 상기 후방 챔버에 위치하는 끝부위는 막혀져 있다.The inlet exhaust pipe 3 is installed to extend through the front face of the muffler housing 1 through the two baffles 12 sequentially to the rear chamber, and to the intermediate chamber of the inlet exhaust pipe 3. A plurality of through holes that serve as an exhaust gas outlet are formed in the location where the exhaust gas introduced through the inlet exhaust pipe is discharged into the intermediate chamber through the through hole, and the rear chamber of the inlet pipe 3 is formed. The end located at is blocked.

그리고 출구 배기파이프(4)는 U자 형상을 하고서 그 일단은 상기 후방 챔버에 위치되게 설치되면서 다른 부위보다 직경이 상대적으로 작은 네크부(4a)를 형성하여 헬름홀츠 소음기 기능을 하게 함으로써, 공명실의 효과를 극대화할 수 있을 뿐만 아니라 후방 챔버에서 저주파 고에너지의 엔진 연소음을 저감시키게 된다.In addition, the outlet exhaust pipe 4 has a U shape and one end thereof is installed in the rear chamber, and forms a neck portion 4a having a smaller diameter than other portions to function as a Helmholtz silencer. In addition to maximizing the effect, it also reduces low-frequency, high-energy engine combustion noise in the rear chamber.

상기 출구 배기파이프(4)의 타단은 상기 중간 챔버와 전방 챔버를 경유하여 다시 상기 후방 챔버까지 연장되게 설치되고, 상기 출구 배기파이프(4)의 상기 중 간 챔버에 위치하는 부위에는 다수개의 관통구멍이 형성되어 출구 배기파이프(4)의 배기가스 유입구 역할을 하게 된다.The other end of the outlet exhaust pipe 4 is installed to extend back to the rear chamber via the intermediate chamber and the front chamber, and a plurality of through holes are provided at a portion of the outlet exhaust pipe 4 located in the intermediate chamber. This is formed to serve as the exhaust gas inlet of the outlet exhaust pipe (4).

상기와 같이 입구 배기파이프(3)의 관통구멍을 통해 중간 챔버로 유입된 배기가스가 상기 출구 배기파이프(4)의 다수개의 관통구멍을 통해 다시 출구 배기파이프(4)로 유입되는 과정에 배기가스의 난류 에너지를 최소화하여 배기가스의 유동 소음을 최소화시킬 수 있고, 또한 유로의 팽창 및 축소의 변화를 통해 배기가스 소음을 전반적으로 감쇄시킬 수 있게 된다.As described above, the exhaust gas introduced into the intermediate chamber through the through hole of the inlet exhaust pipe 3 flows back into the outlet exhaust pipe 4 through the plurality of through holes of the outlet exhaust pipe 4. It is possible to minimize the flow noise of the exhaust gas by minimizing the turbulent energy of the exhaust gas, and also to reduce the overall exhaust noise by changing the expansion and contraction of the flow path.

그리고 상기 전방 챔버와 중간 챔버를 구획지우는 일측 배플(2a)에만 다수개의 관통구멍이 형성됨과 더불어 상기 전방 챔버에는 글라스 울(5)이 충진되어, 상기 중간 챔버로 유입된 배기가스가 상기 배플(2a)의 관통구멍을 통해 전방 챔버로 유입되면서 상기 글라스 울(5)에 의해 배기가스의 고주파 소음이 흡수되어 저감될 뿐만 아니라 소음의 음질도 개선되게 된다.In addition, a plurality of through holes are formed in only one side baffle 2a which divides the front chamber and the middle chamber, and a glass wool 5 is filled in the front chamber so that the exhaust gas flowing into the intermediate chamber is baffle 2a. The high-frequency noise of the exhaust gas is absorbed and reduced by the glass wool 5 as it flows into the front chamber through the through-hole of the), and the sound quality of the noise is also improved.

도 1은 종래 기술에 따른 소형 머플러의 단면도,1 is a cross-sectional view of a small muffler according to the prior art,

도 2는 본 발명에 따른 소형 머플러의 단면도이다.2 is a cross-sectional view of a small muffler according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1-머플러 하우징 2a,2b-배플1-muffler housing 2a, 2b-baffle

3-입구 배기파이프 4-출구 배기파이프3-inlet exhaust pipe 4-outlet exhaust pipe

5-글라스 울5-glass wool

Claims (3)

밀폐된 머플러 하우징(1)의 내부를 전방 챔버와 후방 챔버 및 중간 챔버로 구획지우도록 장착된 2개의 배플(2a,2b), 상기 머플러 하우징(1)의 내부로 삽입되어 상기 2개의 배플을 순차적으로 관통해서 상기 후방 챔버까지 연장되어 막혀지고 상기 중간 챔버와 연통하도록 다수개의 관통구멍이 형성된 입구 배기파이프(3), 일단이 상기 후방 챔버와 연통하도록 설치됨과 더불어 타단은 상기 후방 챔버로부터 전방 챔버까지 연장된 다음에 다시 후방 챔버로 연장됨과 더불어 상기 중간 챔버와 연통하도록 다수개의 관통구멍이 형성된 출구 배기파이프(4)를 갖춘 머플러. Two baffles (2a, 2b) mounted to partition the interior of the sealed muffler housing (1) into the front chamber, the rear chamber and the intermediate chamber, and inserted into the muffler housing (1) to sequentially An inlet exhaust pipe 3 extending through the rear chamber to be closed to the rear chamber and having a plurality of through-holes to communicate with the intermediate chamber, one end of which is installed to communicate with the rear chamber, and the other end from the rear chamber to the front chamber; A muffler having an outlet exhaust pipe (4) which extends and then back to the rear chamber and has a plurality of through holes formed in communication with the intermediate chamber. 청구항 1에 있어서, 상기 출구 배기파이프(4)의 일단이 다른 부위보다 직경이 상대적으로 작은 네크부(4a)를 형성하도록 된 것을 특징으로 하는 머플러.The muffler according to claim 1, wherein one end of said outlet exhaust pipe (4) is formed to form a neck portion (4a) having a diameter smaller than that of the other portion. 청구항 2에 있어서, 상기 전방 챔버와 중간 챔버를 구획지우는 일측 배플(2a)에 관통구멍이 형성되고, 상기 전방 챔버에 글라스 울(5)이 충진된 것을 특징으로 하는 머플러.The muffler according to claim 2, wherein a through hole is formed in one side baffle (2a) which divides the front chamber and the intermediate chamber, and a glass wool (5) is filled in the front chamber.
KR1020070085383A 2007-08-24 2007-08-24 Muffer KR100882655B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1061424A (en) 1996-08-19 1998-03-03 Sango Co Ltd Noise eliminator and its manufacture
KR100360909B1 (en) 2000-09-20 2002-11-18 현대자동차주식회사 Muffler device
KR200307952Y1 (en) 2002-12-16 2003-03-17 동원정공 주식회사 Improvement in automobile muffler
JP2008045464A (en) 2006-08-11 2008-02-28 Toyota Motor Corp Exhaust device for engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1061424A (en) 1996-08-19 1998-03-03 Sango Co Ltd Noise eliminator and its manufacture
KR100360909B1 (en) 2000-09-20 2002-11-18 현대자동차주식회사 Muffler device
KR200307952Y1 (en) 2002-12-16 2003-03-17 동원정공 주식회사 Improvement in automobile muffler
JP2008045464A (en) 2006-08-11 2008-02-28 Toyota Motor Corp Exhaust device for engine

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