KR100489112B1 - Variable-diameter Exhaust system - Google Patents

Variable-diameter Exhaust system Download PDF

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Publication number
KR100489112B1
KR100489112B1 KR10-2002-0021893A KR20020021893A KR100489112B1 KR 100489112 B1 KR100489112 B1 KR 100489112B1 KR 20020021893 A KR20020021893 A KR 20020021893A KR 100489112 B1 KR100489112 B1 KR 100489112B1
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South Korea
Prior art keywords
members
exhaust
thermal expansion
outer pipe
exhaust system
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KR10-2002-0021893A
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Korean (ko)
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KR20030083381A (en
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박기철
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현대자동차주식회사
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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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/22—Flexible elastomeric material
    • 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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat

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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

본 발명은 직경 가변형 배기 시스템에 관한 것으로, 외부파이프와, 상기 외부파이프의 내부에 구비되면서 반원 형상의 단면을 가지는 제1 및 제2내부부재와, 상기 제1 및 제2내부부재의 양 접촉부위의 틈새를 밀폐시키기 위한 제1 및 제2밀폐부재와, 상기 제1 및 제2밀폐부재를 상기 제1 및 제2내부부재의 접촉부위로 밀착시켜서 상기 제1 및 제2내부부재와 제1 및 제2밀폐부재에 의해 내부 파이프를 구현하도록 하는 제1 및 제2스프링을 포함하여 구성되는 한편, 상기 제1 및 제2내부부재는, 각각 서로 다른 열팽창계수를 가지는 2개의 열팽창부재를 접합시켜서 형성함으로써, 차량의 엔진에서 배출되는 배기가스의 흐름에 의한 온도변화에 따라 배기 통로의 직경이 자동적으로 가변되어 최적의 배기성능을 얻을 수 있는 효과가 있다.The present invention relates to a variable diameter exhaust system, comprising: an outer pipe, first and second inner members having a semicircular cross section provided inside the outer pipe, and both contact portions of the first and second inner members. The first and second sealing members and the first and second sealing members to closely contact the contact portions of the first and second inner members to seal the gap between the first and second sealing members. The first and second inner members are formed by joining two thermal expansion members having different thermal expansion coefficients, respectively. In addition, the diameter of the exhaust passage is automatically changed according to the temperature change caused by the flow of the exhaust gas discharged from the engine of the vehicle, thereby obtaining the optimum exhaust performance.

Description

직경 가변형 배기 시스템{Variable-diameter Exhaust system} Variable-diameter exhaust system {Variable-diameter Exhaust system}

본 발명은 직경 가변형 배기 시스템에 관한 것으로, 좀더 상세하게는 차량의 엔진에서 배출되는 배기가스의 흐름에 의한 온도변화에 따라 배기 통로의 직경을 가변시켜서 최적의 배기성능을 얻을 수 있도록 한 직경 가변형 배기 시스템에 관한 것이다.The present invention relates to a variable diameter exhaust system, and more particularly, to a variable diameter exhaust to obtain an optimum exhaust performance by varying the diameter of the exhaust passage in accordance with the temperature change caused by the flow of exhaust gas from the engine of the vehicle. It's about the system.

일반적으로, 자동차의 배기 시스템은 연소의 생성물인 고온, 고압의 가스를 적당한 곳으로 안내할 뿐만 아니라, 연소중에 발생되는 연소음을 감쇄시키는 장치로서의 역할을 수행한다. 이러한 배기 시스템의 기능은 크게 소음저감과 배기압저감이라는 두가지 기능으로 나눌 수 있는데, 현재까지는 머플러나 배기 파이프의 형상을 최적화하는 방법으로 앞에서 언급한 두가지 기능을 모두 충족시키려는 시도가 이루어지고 있었다.In general, the exhaust system of an automobile not only guides high-temperature, high-pressure gas, which is a product of combustion, to a suitable place, but also serves as a device for attenuating combustion noise generated during combustion. The function of the exhaust system can be classified into two functions, namely noise reduction and exhaust pressure reduction. Until now, attempts to satisfy both of the aforementioned functions have been made by optimizing the shape of the muffler or the exhaust pipe.

그러나, 상기한 바와 같은 배기 시스템은 그 형상이 고정되어 있음에 따라 엔진의 전체 RPM영역에 걸쳐 효과적인 성능을 발휘하기가 어려운 문제점이 있으므로, 이러한 문제점을 해소하기 위해 최근에는 가변 머플러 시스템(Dual-mode Exhaust system}이 개발되어 장착되고 있다.However, since the exhaust system as described above has a problem that it is difficult to achieve effective performance over the entire RPM region of the engine as its shape is fixed, recently, in order to solve this problem, a variable muffler system (dual-mode) has recently been developed. Exhaust system} is developed and installed.

상기한 가변 머플러 시스템은 엔진의 저속영역에서는 밸브를 닫고 엔진의 고속영역에서는 밸브를 열어서 엔진에서 배출되는 배기가스를 서로 다른 구조를 가지는 머플러를 통과시키는 방식이다.The above-described variable muffler system is to close the valve in the low speed region of the engine and open the valve in the high speed region of the engine so that the exhaust gas discharged from the engine passes through the mufflers having different structures.

그러나, 상기한 바와 같은 가변 머플러 시스템은, 밸브의 개폐를 통해서 배기경로를 변경함에 따라 엔진의 동작상태를 2가지 조건 즉, 저속과 고속으로만 가정하여 배기 시스템을 제어할 수 밖에 없으므로, 엔진의 회전수 및 엔진의 배기량등과 같은 조건에 민감하게 동작하지 못하는 문제점이 있었다.However, in the variable muffler system as described above, as the exhaust path is changed through opening and closing of the valve, the exhaust system can only be controlled by assuming that the engine operating state is two conditions, namely, low speed and high speed. There was a problem in that it does not operate sensitively to conditions such as the number of revolutions, the engine displacement.

본 발명은 상기한 바와 같은 종래의 문제점을 해소하기 위해 안출된 것으로, 엔진에서 배출되는 배기가스의 흐름에 의한 온도변화에 따라 배기 통로의 직경을 자동적으로 가변시켜서 최적의 배기성능을 얻을 수 있도록 한 직경 가변형 배기 시스템을 제공하는데 그 목적이 있다.The present invention has been made to solve the conventional problems as described above, by automatically varying the diameter of the exhaust passage in accordance with the temperature change by the flow of exhaust gas discharged from the engine to obtain the optimum exhaust performance The purpose is to provide a variable diameter exhaust system.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 직경 가변형 배기 시스템은, 외부파이프와, 상기 외부파이프의 내부에 구비되면서 반원 형상의 단면을 가지는 제1 및 제2내부부재와, 상기 제1 및 제2내부부재의 양 접촉부위의 틈새를 밀폐시키기 위한 제1 및 제2밀폐부재와, 상기 제1 및 제2밀폐부재를 상기 제1 및 제2내부부재의 접촉부위로 밀착시켜서 상기 제1 및 제2내부부재와 제1 및 제2밀폐부재에 의해 내부 파이프를 구현하도록 하는 제1 및 제2스프링을 포함하여 구성되는 한편, 상기 제1 및 제2내부부재는, 각각 서로 다른 열팽창계수를 가지는 2개의 열팽창부재를 접합시켜서 형성한 것을 특징으로 한다.A variable diameter exhaust system according to the present invention for achieving the object as described above, the first and second inner member having an outer pipe, a semicircular cross section while being provided inside the outer pipe, The first and second sealing members and the first and second sealing members for sealing the gap between the contact portions of the second inner member and the first and second sealing members in close contact with the contact portion of the first and second inner members. A first and second springs configured to implement an inner pipe by the inner member and the first and second sealing members, wherein the first and second inner members each have a different coefficient of thermal expansion. It is characterized by forming two thermal expansion members by joining.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 직경 가변형 배기 시스템에서 배기 통로의 직경이 축소된 상태를 도시한 단면도이며, 도 2는 본 발명에 따른 직경 가변형 배기 시스템에서 배기 통로의 직경이 확대된 상태를 도시한 단면도이다.1 is a cross-sectional view showing a reduced diameter of the exhaust passage in the variable diameter exhaust system according to the present invention, Figure 2 is a cross-sectional view showing an enlarged diameter of the exhaust passage in a variable diameter exhaust system according to the present invention. to be.

상기 도 1 및 2에 도시된 바와 같이, 본 발명에 따른 직경 가변형 배기 시스템은, 외부파이프(10)와, 제1내부부재(20), 제2내부부재(30), 제1밀폐부재(41), 제2밀폐부재(42), 제1스프링(51)과, 제2스프링(52)을 포함하여 구성되어 있다.1 and 2, the variable diameter exhaust system according to the present invention, the outer pipe 10, the first inner member 20, the second inner member 30, the first sealing member 41 ), A second sealing member 42, a first spring 51, and a second spring 52.

상기 제1 및 제2내부부재(20, 30)는 반원 형상의 단면을 가지고 있으며, 상기 외부파이프(10)의 내부에서 파이프 형상을 이루도록 설치되어 있다. 또한, 상기 각 내부부재(20, 30)는 서로 다른 열팽창계수를 가지는 2개의 열팽창부재(21, 22)(31, 32)를 접합시켜서 형성한 것으로, 내측 열팽창부재(22, 32)의 열팽창계수가 외측 열팽창부재(21, 22)의 열팽창계수 보다 커서 배기가스 흐름에 의해 온도가 증가하며 상기 각 내부부재(20, 30)는 바깥쪽으로 벌어지도록 되어 있다.The first and second inner members 20 and 30 have a semicircular cross section and are installed to form a pipe in the outer pipe 10. In addition, each of the inner members 20 and 30 is formed by joining two thermal expansion members 21, 22, 31 and 32 having different thermal expansion coefficients, and the thermal expansion coefficients of the inner thermal expansion members 22 and 32. Is greater than the coefficient of thermal expansion of the outer thermal expansion members 21 and 22, the temperature increases due to the exhaust gas flow, and each of the inner members 20 and 30 is spread outward.

상기 제1 및 제2밀폐부재(42, 42)는 상기 제1 및 제2스프링(51, 52)에 의해 상기 제1 및 제2내부부재(20, 30)의 접촉부위로 밀착되어, 상기 제1 및 제2내부부재(20, 30)의 양 접촉부위에서 발생되는 틈새를 통해 이물질의 출입되는 것을 방지한다.The first and second sealing members 42 and 42 are in close contact with the contact portions of the first and second inner members 20 and 30 by the first and second springs 51 and 52. And it prevents the entry of foreign matter through the gap generated at both contact portions of the second inner member (20, 30).

또한, 상기 제1 및 제2스프링(51, 52)는 상기 외부파이프(10)의 내측면에 형성된 안착홈(61, 62)에 안착되어 상기 제1 및 제2밀폐부재를(41, 42)를 내측으로 밀착시키도록 되어 있다.In addition, the first and second springs 51 and 52 are seated in the seating grooves 61 and 62 formed in the inner surface of the outer pipe 10 to seal the first and second sealing members 41 and 42. Is in close contact with the inside.

상기와 같이 구성된 본 발명에 따른 직경 가변형 배기 시스템의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the variable diameter exhaust system according to the present invention configured as described above are as follows.

엔진의 저RPM영역에서는 엔진에서 배출되어 외부파이프(10)를 통해 제1 및 제2내부부재(20, 30)를 통과하는 배기가스의 흐름이 약하게 되며, 이때에는 배기가스에 의해 상기 제1 및 제2내부부재(20, 30)로 가해지는 온도가 비교적 낮은 상태가 된다. In the low RPM region of the engine, the flow of exhaust gas discharged from the engine and passing through the first and second inner members 20 and 30 through the outer pipe 10 is weakened. The temperature applied to the second inner members 20 and 30 is in a relatively low state.

따라서, 상기 제1 및 제2내부부재(20, 30)는 도 1에 도시된 바와 같이 내측으로 좁아지는 형상을 하게 됨에 따라 배기 통로의 직경이 축소되는 효과를 가지게 된다.Therefore, the first and second inner members 20 and 30 have an effect of narrowing inwardly as shown in FIG. 1, thereby reducing the diameter of the exhaust passage.

한편, 엔진의 고RPM영역에서는 엔진에서 배출되어 외부파이프(10)를 통해 제1 및 제2내부부재(20, 30)를 통과하는 배기가스의 흐름이 점점 강하게 되며, 이때에는 배기가스에 의해 상기 제1 및 제2내부부재(20, 30)에 가해지는 온도가 비교적 높은 상태가 된다. On the other hand, in the high RPM region of the engine, the exhaust gas flowing from the engine and passing through the first and second inner members 20 and 30 through the outer pipe 10 becomes increasingly strong. The temperature applied to the first and second inner members 20 and 30 is relatively high.

따라서, 제1 및 제2내부부재(20, 30)가 열팽창하게 되는데, 상기 제1 및 제2내부부재(20, 30)를 구성하는 내측 열팽창부재(22, 32)의 열팽창율이 외측 열팽창부재(21, 31)의 열팽창율 보다 커서, 상기 제1 및 제2내부부재(20, 30)는 상기 제1 및 제2스프링(51, 52)의 힘을 극복하고 바깥쪽으로 벌어지게 됨에 따라 배기 통로의 직경이 커지는 효과를 가지게 된다.Accordingly, the first and second inner members 20 and 30 are thermally expanded, and the thermal expansion coefficients of the inner thermal expansion members 22 and 32 constituting the first and second inner members 20 and 30 are the outer thermal expansion members. Larger than the coefficient of thermal expansion of (21, 31), the first and second inner member (20, 30) is the exhaust passage as it overcomes the force of the first and second spring (51, 52) and spread outward It has the effect of increasing the diameter of.

이상에서 살펴본 바와 같이 본 발명에 따르면, 엔진에서 배출되는 배기가스의 흐름에 의한 온도변화에 따라 배기 통로의 직경을 자동적으로 가변시켜서 최적의 배기성능을 얻을 수 있는 효과가 있다.As described above, according to the present invention, the diameter of the exhaust passage is automatically changed according to the temperature change caused by the flow of the exhaust gas discharged from the engine, thereby obtaining the optimum exhaust performance.

도 1은 본 발명에 따른 직경 가변형 배기 시스템에서 배기 통로의 직경이 축소된 상태를 도시한 단면도,1 is a cross-sectional view showing a state in which the diameter of the exhaust passage is reduced in the variable diameter exhaust system according to the present invention;

도 2는 본 발명에 따른 직경 가변형 배기 시스템에서 배기 통로의 직경이 확대된 상태를 도시한 단면도이다.Figure 2 is a cross-sectional view showing an enlarged diameter of the exhaust passage in the variable diameter exhaust system according to the present invention.

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

10 : 외부파이프 20 : 제1내부부재10: outer pipe 20: first inner member

30 : 제2내부부재 41, 42 : 밀폐부재30: second inner member 41, 42: sealing member

51, 52 : 스프링51, 52: spring

Claims (1)

외부파이프와, 상기 외부파이프의 내부에 구비되면서 반원 형상의 단면을 가지는 제1 및 제2내부부재와, 상기 제1 및 제2내부부재의 양 접촉부위의 틈새를 밀폐시키기 위한 제1 및 제2밀폐부재와, 상기 외부파이프의 내측면에 형성된 안착홈에 안착된 상태에서 상기 제1 및 제2밀폐부재를 내측으로 밀어서 상기 제1 및 제2밀폐부재를 상기 제1 및 제2내부부재의 접촉부위로 밀착시켜 상기 제1 및 제2내부부재와 제1 및 제2밀폐부재에 의해 내부 파이프가 구현되도록 하는 제1 및 제2스프링을 포함하여 구성되는 한편, 상기 제1 및 제2내부부재는, 각각 서로 다른 열팽창계수를 가지는 2개의 열팽창부재를 접합시켜서 형성한 것을 특징으로 하는 직경 가변형 배기 시스템.An outer pipe, first and second inner members provided in the outer pipe and having a semicircular cross section, and first and second seals for closing gaps between both contact portions of the first and second inner members. The first and second sealing members are brought into contact with the first and second inner members by pushing the first and second sealing members inward while seated in a sealing member and a seating groove formed in the inner surface of the outer pipe. The first and second inner members are configured to include the first and second springs to be in close contact with each other so that the inner pipe is realized by the first and second inner members and the first and second sealing members. A variable diameter exhaust system, formed by joining two thermal expansion members each having a different thermal expansion coefficient.
KR10-2002-0021893A 2002-04-22 2002-04-22 Variable-diameter Exhaust system KR100489112B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089388A (en) * 2016-07-29 2016-11-09 安徽工程大学 Two stroke engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990001485U (en) * 1997-06-19 1999-01-15 배순훈 Reduction device for lukewarm water output of gas boiler
KR19990020048A (en) * 1997-08-30 1999-03-25 정몽규 Catalytic converter
KR20010008746A (en) * 1999-07-03 2001-02-05 정몽규 Oil control apparatus to decrease smoke as starting cooling engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990001485U (en) * 1997-06-19 1999-01-15 배순훈 Reduction device for lukewarm water output of gas boiler
KR19990020048A (en) * 1997-08-30 1999-03-25 정몽규 Catalytic converter
KR20010008746A (en) * 1999-07-03 2001-02-05 정몽규 Oil control apparatus to decrease smoke as starting cooling engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089388A (en) * 2016-07-29 2016-11-09 安徽工程大学 Two stroke engine
CN106089388B (en) * 2016-07-29 2018-09-04 安徽工程大学 Two stroke engine

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