KR20010038901A - A muffler of exhaust gas flow control in vehicle - Google Patents

A muffler of exhaust gas flow control in vehicle Download PDF

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Publication number
KR20010038901A
KR20010038901A KR1019990047069A KR19990047069A KR20010038901A KR 20010038901 A KR20010038901 A KR 20010038901A KR 1019990047069 A KR1019990047069 A KR 1019990047069A KR 19990047069 A KR19990047069 A KR 19990047069A KR 20010038901 A KR20010038901 A KR 20010038901A
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KR
South Korea
Prior art keywords
exhaust gas
opening
vehicle
exhaust
pipes
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KR1019990047069A
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Korean (ko)
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KR100325741B1 (en
Inventor
함원득
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류정열
기아자동차 주식회사
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Priority to KR1019990047069A priority Critical patent/KR100325741B1/en
Publication of KR20010038901A publication Critical patent/KR20010038901A/en
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Publication of KR100325741B1 publication Critical patent/KR100325741B1/en

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Classifications

    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/161—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers
    • F01N1/163—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers by means of valves
    • 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
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
    • 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
    • F01N2390/00—Arrangements for controlling or regulating exhaust apparatus
    • F01N2390/04—Arrangements for controlling or regulating exhaust apparatus using electropneumatic components
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus

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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

PURPOSE: A resonant muffler for controlling flow of vehicle exhaust gas is provided to improve the capacity of engine output with reducing exhaust noise and back pressure by opening and shutting discharge pipes with using the compressed air and a valve. CONSTITUTION: In a resonant muffler having a plurality of porous pipes installed inside of a shell covering separated inflow pipe(1) and discharge pipes(2a,2b) with being supported by partitions(4a,4b,4c), a resonant muffler for controlling flow of vehicle exhaust gas includes a valve(6) installed in a front end of one discharge pipe for opening and shutting the discharge pipes, wherein the valve is operated by air pressure of a compressed air source(8) by a signal applied from an ECU(7) operating corresponding to the rotary frequency of an engine.

Description

차량용 배기가스 흐름조절용 공명소음기{A muffler of exhaust gas flow control in vehicle}Resonance silencer for vehicle exhaust control {A muffler of exhaust gas flow control in vehicle}

본 발명은 차량용 엔진의 배기가스를 방출하는 배기장치에 관한 것으로, 특히 차량엔진의 다양한 회전수에 대응하여 배기가스의 흐름을 조절함에 따라 배기소음과 배압을 저감시킨 개량된 차량용 배기가스 흐름조절용 공명소음기에 관한 것이다.The present invention relates to an exhaust device for releasing exhaust gas of a vehicle engine, and in particular, to improve the exhaust noise and back pressure of an improved vehicle exhaust gas flow regulation by adjusting the exhaust gas flow in response to various rotational speeds of a vehicle engine. It is about a silencer.

주지된 바와 같이 차량용 배기장치의 공명소음기는 엔진의 폭발행정후 방출되는 배기가스를 외부로 빠져나가도록 유도 안내하는 장치로서, 다양한 소음기들이 기히 제안되어 이용되고 있는 실정인바, 그중 다단식 공명소음기의 종래구조를 살펴 보면, 도 2에 도시된 바와 같이 이격된 유입/배출 배기파이프들(101,102)을 감싸는 쉘(103) 내부에는 격벽들(104)에 의해 여러개의 다공 파이프(105)가 설치되어 있어서 상기 격벽들(104) 사이의 체적 및 다공 파이프(105)의 배치형태에 따라 특정한 엔진 회전수의 소음만을 저감시키는 구조로 되어 있다.As is well known, the resonant silencer of an exhaust device for a vehicle is a device for guiding the exhaust gas emitted after the explosion stroke to the outside, and various silencers have been proposed and used. Among them, the conventional multistage resonant silencer Looking at the structure, as shown in Figure 2 inside the shell 103 surrounding the inlet / discharge exhaust pipes (101, 102) spaced apart by a plurality of porous pipes 105 are installed by the partitions 104, According to the volume between the partitions 104 and the arrangement of the porous pipes 105, only the noise of a specific engine speed is reduced.

이는 상기 공명소음기의 내부구조에 있어서, 다공 파이프(105)들의 배치형태가 일정하게 구획되어 설치되어 있기 때문에 앞선 엔진 회전수의 영역에서 소음저감이 효율적으로 이루어지지 않고, 배압상승으로 인하여 궁극적으로는 엔진의 출력이 저하되는 문제점이 있었다.This is because in the internal structure of the resonant silencer, since the arrangement of the perforated pipes 105 is installed in a constant partition, noise reduction is not effectively achieved in the region of the engine speed, and ultimately due to the back pressure increase. There was a problem that the output of the engine is reduced.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로, 공명소음기의 쉘내부에 설치된 일부 배출파이프에 밸브를 설치하여 엔진의 회전수에 따라 배기가스의 흐름이 조절되어 배기소음과 배압을 저감시키도록 이루어진 차량용 배기가스 흐름조절용 공명소음기를 제공함에 그 목적이 있다Accordingly, the present invention has been invented to solve the above problems, by installing a valve in a part of the exhaust pipe installed in the shell of the resonant silencer to control the flow of exhaust gas in accordance with the engine speed to reduce the exhaust noise and back pressure The purpose of the present invention is to provide a resonant silencer for vehicle exhaust gas flow control.

도 1은 본 발명에 따른 공명소음기의 전체 구성도,1 is an overall configuration diagram of a resonance silencer according to the present invention,

도 2는 종래구조로서, 도 1에 대응되는 공명소음기의 개략 단면도이다.2 is a schematic cross-sectional view of a resonance silencer corresponding to FIG. 1 as a conventional structure.

- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-

1 - 유입파이프, 2a,2b - 배출파이프,1-inlet pipe, 2a, 2b-outlet pipe,

3 - 쉘(shell), 4a,4b,4c - 격벽,3-shell, 4a, 4b, 4c-bulkhead,

5a,5b,5c - 다공파이프, 6 - 개폐용 밸브,5a, 5b, 5c-porous pipes, 6-valves for opening and closing,

7 - ECU, 8 - 압축공기원.7-ECU, 8-compressed air source.

상기와 같은 목적을 달성하기 위한 본 발명은 이격된 배기가스의 유입 및 배출파이프들을 감싸는 쉘 내부에 격벽에 의해서 여러개의 다공 파이프들이 설치되어 이루어진 차량용 배기가스 공명소음기에 있어서, 상기 한쪽 배출파이프의 선단에는 개폐용 밸브를 설치하되 이 개폐용 밸브는 엔진의 회전수에 대응하여 작용하는 ECU의 신호인가에 의해 압축공기원의 공압으로 작용되어지도록 되어 있다.In order to achieve the above object, the present invention provides a vehicle exhaust gas resonance silencer in which a plurality of perforated pipes are installed by a partition wall inside a shell that surrounds inlet and outlet pipes of spaced exhaust gas. An opening / closing valve is installed in the valve, and the opening / closing valve is operated by the pneumatic pressure of the compressed air source by applying a signal from the ECU which acts corresponding to the engine speed.

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

도 1은 본 발명에 따른 차량용 배기가스 흐름조절용 공명소음기의 전체를 나타낸 개략 구성도로서, 도면에 도시된 바와 같이 본 발명은 이격된 배기가스 유입파이프(1)와 배출파이프들(2a,2b)을 감싸는 쉘(3) 내부에 격벽들(4a,4b,4c)들에 지지되어 여러개의 다공 파이프들(5a,5b,5c)이 설치되어 이루어진 공명소음기에 있어서, 상기 한쪽 배출파이프(2b)의 선단에는 개폐용 밸브(6)를 설치하되, 이 개폐용 밸브(6)는 엔진 회전수에 대응하여 작용하는 ECU(7)의 신호 인가에 의해 압축공기원(8)의 공압으로 작동하도록 되어 있다.1 is a schematic configuration diagram showing the entirety of a resonant silencer for controlling a vehicle exhaust gas flow according to the present invention. As shown in the drawing, the present invention provides a spaced exhaust gas inlet pipe 1 and exhaust pipes 2a and 2b. In the resonator of the silencer made of a plurality of porous pipes (5a, 5b, 5c) is supported by the partitions (4a, 4b, 4c) inside the shell (3) surrounding the shell of the discharge pipe (2b) An open / close valve 6 is provided at the front end, and the open / close valve 6 is operated by the pneumatic pressure of the compressed air source 8 by the application of a signal from the ECU 7 acting corresponding to the engine speed. .

또한 상기 개폐용 배출파이프(2b)의 둘레에는 다공이 형성되어 있지 않고 원통형의 파이프로 되어 있다.In addition, no perforation is formed around the opening / closing discharge pipe 2b, and a cylindrical pipe is formed.

이와 같이 이루어진 본 발명에 따른 차량용 배기가스 흐름조절용 공명소음기는 쉘(3) 내부에 장착된 배출파이프(2b)에 개폐용 밸브(6)가 설치되어 있어서, 이 개폐용 밸브(6)의 개폐에 따라 배기가스의 흐름이 조정되는 바, 즉 엔진의 회전수가 저속일 때에는 ECU(7)가 이를 감지하여 압축공기원(8)의 공압으로 상기 개폐용 밸브(6)를 폐쇄시키게 되는데, 이에 따라 화살표 방향으로 흐르는 배기가스의 흐름이 축방향의 흐름에서 반경방향으로 변화하여 흐름에 따라 소음주파수의 반사와 산란 효과로 소음이 저감되고 배압은 약간 높아지나 엔진 출력에는 영향을 거의 끼치지 않게 된다.The resonant silencer for vehicle exhaust gas flow control according to the present invention thus constructed is provided with an opening / closing valve 6 in the discharge pipe 2b mounted inside the shell 3, so as to open and close the opening / closing valve 6. Accordingly, when the flow of the exhaust gas is adjusted, that is, when the engine speed is low, the ECU 7 detects this and closes the opening / closing valve 6 by the pneumatic pressure of the compressed air source 8. As the flow of exhaust gas flowing in the direction changes from the axial flow to the radial direction, the noise is reduced due to the reflection and scattering effect of the noise frequency and the back pressure is slightly increased but the engine output is hardly affected.

한편, 상기 엔진의 회전수가 고속일 때에는 ECU(7)가 이를 감지하여 압축공기원(8)의 공압으로 이 개폐용 밸브(6)를 개방시키게 되는데, 그러면 본 발명에 따른 공명소음기는 종래 공명소음기와 같이 배기가스의 흐름을 원활하게 유도하여 소음과 배압을 낮추게 된다.On the other hand, when the engine speed is high, the ECU (7) detects this to open the opening and closing valve (6) by the pneumatic pressure of the compressed air source (8), then the resonant silencer according to the present invention conventional resonance silencer As described above, the flow of the exhaust gas is smoothly induced to lower the noise and the back pressure.

상기와 같이 본 발명은 엔진의 회전수에 따라 압축공기와 개폐용 밸브를 이용하여 공명소음기 내부의 배출파이프를 개방/폐쇄시키어 배기가스의 흐름을 조절함에 따라 배기소음과 배압을 저감시키면서 엔진출력의 성능도 개선되는 효과를 지니게 된다.As described above, the present invention uses the compressed air and the opening / closing valve to open / close the exhaust pipe inside the resonance silencer to control the flow of the exhaust gas, thereby reducing the exhaust noise and back pressure. Performance will also be improved.

Claims (2)

이격된 배기가스의 유입파이프(1)와 배출파이프들(2a,2b)을 감싸는 쉘(3) 내부에 격벽들(4a,4b,4c)들에 지지되어 여러개의 다공 파이프들(5a,5b,5c)이 설치되어 이루어진 공명소음기에 있어서,The porous pipes 5a and 5b are supported by the partition walls 4a, 4b and 4c inside the shell 3 surrounding the inflow pipe 1 and the exhaust pipes 2a and 2b of the exhaust gas. In the resonant silencer 5c) is installed, 상기 한쪽 배출파이프(2b)의 선단에는 개폐용 밸브(6)를 설치하되, 이 개폐용 밸브(6)는 엔진 회전수에 대응하여 작용하는 ECU(7)의 신호 인가에 의해 압축공기원(8)의 공압으로 작동하도록 이루어진 것을 특징으로 하는 차량용 배기가스 흐름조절용 공명소음기.An opening / closing valve 6 is provided at the front end of the one discharge pipe 2b, and the opening / closing valve 6 is a compressed air source 8 by applying a signal from the ECU 7 acting corresponding to the engine speed. Resonance silencer for vehicle exhaust gas flow, characterized in that configured to operate at pneumatic. 제 1항에 있어서, 상기 한쪽 배출파이프(2b)는 다공 없이 원통형 파이프로 이루어진 것을 특징으로 하는 차량용 배기가스 흐름조절용 공명소음기.The resonance exhaust silencer according to claim 1, wherein said one exhaust pipe (2b) is made of a cylindrical pipe without porosity.
KR1019990047069A 1999-10-28 1999-10-28 A muffler of exhaust gas flow control in vehicle KR100325741B1 (en)

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