KR100199504B1 - Noise decrease apparatus for exhaust pipe of a car - Google Patents

Noise decrease apparatus for exhaust pipe of a car Download PDF

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Publication number
KR100199504B1
KR100199504B1 KR1019930021019A KR930021019A KR100199504B1 KR 100199504 B1 KR100199504 B1 KR 100199504B1 KR 1019930021019 A KR1019930021019 A KR 1019930021019A KR 930021019 A KR930021019 A KR 930021019A KR 100199504 B1 KR100199504 B1 KR 100199504B1
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South Korea
Prior art keywords
exhaust pipe
control device
noise
pipe
speaker
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KR1019930021019A
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Korean (ko)
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KR950011807A (en
Inventor
오재훈
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류정열
기아자동차주식회사
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Priority to KR1019930021019A priority Critical patent/KR100199504B1/en
Publication of KR950011807A publication Critical patent/KR950011807A/en
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Publication of KR100199504B1 publication Critical patent/KR100199504B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing

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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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

본 발명은 자동차의 소음장치에 관한 것으로서, 소음기의 소형화가 가능하고, 엔진의 성능이 향상되도록 하기 위해, 배기관에 연통되게 연결되는 연결파이프(11)와, 상기 연결파이프(11) 내부에 장착되는 스피커(12) 와, 상기 스피커(12)에 연결되고 전자제어장치(13)에 접속되어 신호를 발생시키는 능동잡음제어장치(14)로 구성되며, 상기 연결파이프(11)는 외주면에 냉각핀(11a)이 형성되어, 스피커(12)에서 배기관(3),(4) 또는, 소음기(5),(6) 내의 소음을 감지하여 능동잡음제어장치(14)로 신호를 전송하고, 능동제어장치(14)에 입력된 신호가 전자제어장치(13)에 의해 180도 위상이 바뀌도록 한 신호를 스프커(12)에 출력하여, 배기관(3),(4) 내의 소음을 상쇄시키도록 하는 자동차 배기관의 소음 저감장치이다.The present invention relates to a silencer of a vehicle, in order to reduce the size of the silencer and improve the performance of the engine, the connection pipe 11 is connected to the exhaust pipe in communication with, and is mounted inside the connection pipe (11) Speaker 12 and an active noise control device 14 connected to the speaker 12 and connected to the electronic control device 13 to generate a signal, the connection pipe 11 has a cooling fin ( 11a) is formed, the speaker 12 detects the noise in the exhaust pipe (3), (4), or silencers (5), (6) and transmits a signal to the active noise control device (14), active control device An automobile which outputs a signal in which the signal inputted at (14) is 180 degrees out of phase by the electronic control device 13 to the sprinkler 12 so as to cancel the noise in the exhaust pipes 3 and 4. Noise reduction device of exhaust pipe.

Description

자동차 배기관의 소음 저감장치Noise reduction device of automobile exhaust pipe

제1도는 종래 배기관을 나타내는 사시도.1 is a perspective view showing a conventional exhaust pipe.

제2도는 본 발명이 장치된 배기관의 사시도.Figure 2 is a perspective view of the exhaust pipe is equipped with the present invention.

제3도는 본 발명의 취부상태를 나타내는 부분 단면도.3 is a partial cross-sectional view showing the mounting state of the present invention.

제4도는 본 발명이 취부되는 상태의 다른 실시예를 나타내는 정면도.4 is a front view showing another embodiment of a state in which the present invention is mounted.

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

3 : 프론트파이프 4 : 센터파이프3: front pipe 4: center pipe

5 : 보조소음기 6 : 메인소음기5: auxiliary silencer 6: main silencer

11 : 연결파이프 12 : 스피커11: connection pipe 12: speaker

13 : 전자제어장치 14 : 능동잡음제어장치13 electronic control device 14 active noise control device

본 발명은 자동차의 소음장치에 관한 것으로서, 특히 능동잡음제어장치를 배기관에 부가시켜 소음을 저감시켜 주도록 하므로, 소음기를 소형화하고, 엔진의 성능이 향상되도록 하는 자동차 배기관의 소음 저감장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle silencer, and more particularly, to an active noise control device added to an exhaust pipe to reduce noise.

종래 자동차 배기관의 소음장치는 엔진에서 동력을 발생시키고 배기되는 고온 고압의 배기가스를 저온 저압으로 감쇄되도록 하여 외부로 방출하는 장치로서, 제1도에서 도시되는 바와 같이, 엔진(1)의 실린더 내부에 연통되게 배기관이 연결되고, 배기관 중간에 유해 가스를 무해가스로 환원시켜 주는 촉매컨버터(2)와 소음을 저감시켜 주는 소음기가 장치되며, 상기 배기관은 선단부의 프론트파이프(3)와 후단부의 센터파이프(4)가 분리 가능하게 연결되고, 소음기는 전방에 보조소음기(5)가 장치되고, 후방에 메인소음기(6)가 장치되어 있다.The conventional silencer of an automobile exhaust pipe is a device for generating power from an engine and discharging the exhaust gas of high temperature and high pressure discharged to low temperature and low pressure to discharge it to the outside. As shown in FIG. 1, the inside of the cylinder of the engine 1 An exhaust pipe is connected in communication with the exhaust pipe, and a catalytic converter 2 for reducing harmful gas into a harmless gas and a silencer for reducing noise are provided in the middle of the exhaust pipe. The pipe 4 is detachably connected, the silencer is equipped with an auxiliary silencer 5 in the front and a main silencer 6 in the rear.

이와같이 구성되는 종래 자동차 배기관의 소음장치는 실린더에서 배기되는 고온 고압의 배기가스가 프론트파이프(3)를 통해 촉매컨버터(2)로 유입되어 가스중의 유해한 CO, HC, NOX가 무해한 CO2, H2O, H2로 환원되고, 보조소음기(5)와 메인소음기(6)를 통과하며 내부에 형성된 공간에 의해 배기가스의 온도와 압력이 저하되어 외부로 방출된다. 한편, 소음기(5), (6)는 강판을 원통형으로 만들어 그 내부를 몇개의 공간으로 구분하여, 배기 가스가 그들의 장벽을 통과한 음파의 간섭, 압력변동의 감소, 배기온도의 저하 등을 일으켜 점차로 소음되도록 되어 있다.Thus silencer of a conventional automotive exhaust pipe configured is introduced into the catalytic converter (2) through the exhaust gas with the front pipe (3) at high temperature and high pressure discharged from the cylinder is harmful CO, HC, NO X in the gas harmless CO 2, It is reduced to H 2 O, H 2 , passes through the auxiliary silencer 5 and the main silencer 6, and the temperature and pressure of the exhaust gas are lowered and released to the outside by the space formed therein. On the other hand, the silencers 5 and 6 make the steel plate cylindrical and divide the inside into several spaces, causing the exhaust gases to pass through their barriers, causing interference of sound waves, reducing pressure fluctuations, and lowering the exhaust temperature. It is intended to gradually become noise.

그러나, 이러한 종래 자동차 배기관의 소음장치는 소음효과를 높이기 위해서 소음기(5),(6)의 저항을 너무 크게 하면, 엔진(1)의 폭음은 작아지 지만 배기행정에 미치는 저항, 즉 배압(back pressure)이 높아져 엔진(1)의 출력이 저하되고, 엔진(1)의 출력을 향상시키기 위해 소음기의 저항을 너무 작게 하면, 외부로 방출되는 소음이 너무 크게 되는 문제가 있었다.However, in such a conventional vehicle exhaust system silencer, if the resistance of the silencers 5 and 6 is made too large to increase the noise effect, the noise of the engine 1 is reduced but the resistance to the exhaust stroke, i.e. back When the pressure increases, the output of the engine 1 decreases, and if the resistance of the silencer is made too small to improve the output of the engine 1, there is a problem that the noise emitted to the outside becomes too large.

본 발명의 목적은 상기와 같은 종래의 문제점을 해결하기 위해, 배기관 내에서 감지된 신호의 위상을 180도 바꿔 출력하도록 하는 능동잡음제어장치를 부가시켜, 소음을 저감시켜 주고 배압을 줄여 주는 자동차 배기관의 소음 저감장치를 제공하는 데 있다.An object of the present invention is to solve the conventional problems as described above, by adding an active noise control device for outputting the phase of the signal detected in the exhaust pipe by 180 degrees, reducing the noise and reducing the back pressure automobile exhaust pipe To provide a noise reduction device of the.

이하 첨부된 도면에 따라 본 발명의 실시예를 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention according to the accompanying drawings in detail as follows.

본 발명의 배기관도 제2도와 제3도에서 도시되는 바와 같이, 프론트파이프(3)와 센터 파이프(4)로 되는 배기관이 엔진의 실린더 내부에 연통되게 연결되고, 프론트파이프(3)에 유해가스를 무해가스로 환원시켜 주는 촉매컨버터(2)가 장치되며, 센터파이프(4)에 소음을 저감시켜 주는 보조소음기(5)와 메인소음기(6)가 장치되는 것은 종래와 같다. 단, 본 발명은 센터파이프(4)에 냉각핀(11a)이 형성되는 연결파이프(11)가 연통되게 연결되고, 연결파이프(11) 내부에 스피커(12)가 장착되며, 전자제어장치(13)에 접속되어 입력 신호에 따라 신호를 발생시키는 능동잡음제어장치(Active Noise Control System)(14)가 스피커(12)에 연결됨을 그 기술적 구성상의 특징으로 한다.As shown in FIG. 2 and FIG. 3, the exhaust pipe of the present invention is connected to the exhaust pipe including the front pipe 3 and the center pipe 4 in communication with the inside of the cylinder of the engine, and the harmful gas to the front pipe 3. The catalytic converter (2) for reducing the gas into a harmless gas is provided, and the auxiliary silencer (5) and the main silencer (6) for reducing noise in the center pipe (4) are conventionally installed. However, in the present invention, the connection pipe 11 in which the cooling fins 11a are formed to be connected to the center pipe 4 is connected to each other, the speaker 12 is mounted inside the connection pipe 11, and the electronic control device 13 It is characterized by the technical configuration that the active noise control system (Active Noise Control System) 14 is connected to the speaker 12 is connected to the speaker 12 to generate a signal in accordance with the input signal.

이와같이 구성되는 본 발명은 스피커(12)에서 배기관(3),(4) 내의 소음을 감지하여 능동잡음제어장치(14)로 신호를 전송하고, 능동제어장치(14)에 입력된 신호가 전자제어장치(13)에 의해 180도 위상이 바뀌도록 한 신호를 스피커(12)에 출력하여, 배기관(3),(4) 내의 소음을 상쇄시킨다. 또한, 연결파이프(11)의 외주면에 형성된 냉각핀(11a)에 의해 방열되도록 하므로, 스피커(12)가 열에 의해 과열되는 것을 방지한다.According to the present invention configured as described above, the speaker 12 senses noise in the exhaust pipes 3 and 4, transmits a signal to the active noise control device 14, and the signal input to the active control device 14 is electronically controlled. The device 13 outputs a signal for changing the phase of 180 degrees to the speaker 12 to cancel the noise in the exhaust pipes 3 and 4. In addition, since the heat radiation is caused by the cooling fins 11a formed on the outer circumferential surface of the connection pipe 11, the speaker 12 is prevented from being overheated by heat.

한편, 제4도는 본 발명의 연결파이프(11)가 연결되는 상태를 나타내는 다른 실시예로서, 티(T)형파이프로 형성하여 외주면에 냉각핀(11a)이 형성되고, 배기관(3),(4) 사이에 양단이 연통되게 연결된다.On the other hand, Figure 4 is another embodiment showing a state in which the connecting pipe 11 of the present invention is connected, formed by a tee (T) pipe, the cooling fin (11a) is formed on the outer peripheral surface, exhaust pipe (3), ( 4) Both ends are connected in communication.

이러한 본 발명은 스피커(12)가 장착되는 연결파이프(11)가 배기관 의 센터파이프(4)에 연결되는 간단한 구조로, 비교적 큰 소음을 상쇄시키기 때문에, 종래와 같이 소음기(5),(6)가 크지 않아도 된다. 따라서, 배기 소음을 종래와 동등한 수준으로 유지하려고 할 경우, 소음기(5),(6)의 용량 축소가 가능하여, 소음기(5),(6)를 소형으로 제작할 수 있도록 한다. 또한, 소음기(5),(6)의 용량 축소로인해 배압이 감소되기 때문에, 엔진의 성능이 향상되고, 배기관의 표준화가 가능하다.The present invention has a simple structure in which the connecting pipe 11 on which the speaker 12 is mounted is connected to the center pipe 4 of the exhaust pipe, and cancels relatively loud noise, so that silencers 5 and 6 are conventionally used. Does not have to be large. Therefore, when the exhaust noise is to be maintained at the same level as in the prior art, the capacity of the silencers 5 and 6 can be reduced, so that the silencers 5 and 6 can be manufactured in a small size. In addition, since the back pressure is reduced due to the capacity reduction of the silencers 5 and 6, the performance of the engine is improved and the exhaust pipe can be standardized.

이상에서 살펴본 바와 같이, 본 발명은 배기관 내에서 감지한 소음 신호의 위상을 180도 바꿔 출력하도록 하는 능동잡음제어장치가 부가되어, 소음기를 소형으로 제작하고, 엔진의 성능을 향상시켜 주도록 하는 매우 유용한 것이다.As described above, the present invention is an active noise control device is added to change the phase of the noise signal detected in the exhaust pipe by 180 degrees, it is very useful to make the silencer small, improve the performance of the engine will be.

Claims (1)

배기관에 연통되게 연결되는 연결파이프와, 상기 연결파이프 내부에 장착되는 스피커와, 상기 스피커에 연결되고 전자제어장치에 접속되어 신호를 발생시키는 능동잡음제어장치에 있어서, 상기 연결파이프의 외주면에 다수개의 냉각핀이 형성되어 스피커의 과열을 방지하도록 한 것을 특징으로 하는 자동차 배기관의 소음저감장치.A connection pipe connected in communication with an exhaust pipe, a speaker mounted inside the connection pipe, and an active noise control device connected to the speaker and connected to an electronic control device to generate a signal, comprising: a plurality of connection pipes on an outer circumferential surface of the connection pipe; Cooling fins are formed to reduce the overheating of the speaker noise reduction device of the vehicle exhaust pipe, characterized in that.
KR1019930021019A 1993-10-11 1993-10-11 Noise decrease apparatus for exhaust pipe of a car KR100199504B1 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1019930021019A KR100199504B1 (en) 1993-10-11 1993-10-11 Noise decrease apparatus for exhaust pipe of a car

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KR950011807A KR950011807A (en) 1995-05-16
KR100199504B1 true KR100199504B1 (en) 1999-06-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030071429A (en) * 2002-02-28 2003-09-03 박이용 Silencer type cooling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030071429A (en) * 2002-02-28 2003-09-03 박이용 Silencer type cooling

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KR950011807A (en) 1995-05-16

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