KR20040031263A - Muffler with catalytic converter - Google Patents

Muffler with catalytic converter Download PDF

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Publication number
KR20040031263A
KR20040031263A KR1020020060641A KR20020060641A KR20040031263A KR 20040031263 A KR20040031263 A KR 20040031263A KR 1020020060641 A KR1020020060641 A KR 1020020060641A KR 20020060641 A KR20020060641 A KR 20020060641A KR 20040031263 A KR20040031263 A KR 20040031263A
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KR
South Korea
Prior art keywords
catalyst
temperature
exhaust gas
catalytic converter
porous membrane
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KR1020020060641A
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Korean (ko)
Inventor
김영선
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현대자동차주식회사
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Priority to KR1020020060641A priority Critical patent/KR20040031263A/en
Publication of KR20040031263A publication Critical patent/KR20040031263A/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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor
    • 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

Abstract

PURPOSE: A muffler integrated with a catalytic converter is provided to allow easy replacement of the catalytic converter, to resolve heat injury with a room and surrounding components, and to keep optimum performance of exhaust gas purification by controlling temperature of catalyst. CONSTITUTION: A plurality of holes(12) are formed on a side of a front end of an inlet pipe(10), and a porous membrane(21) is placed in a muffler housing(20) so that exhaust gas passes the holes and the porous membrane to be repeatedly expanded and contracted so as to reduce noise thereof. Exhaust gas passing the porous membrane passes catalyst(22) so that harmful gas such as carbon monoxide, hydrocarbon and nitrogen oxide is oxidized and deoxidized by the catalyst and converted into harmless components such as carbon dioxide, water and nitrogen. Exhaust gas whose harmful gas is removed passes a plurality of holes(32,34) formed on an outlet pipe(30) to be repeatedly expanded and contracted so as to reduce noise thereof. A hot wire(23) is placed between the porous membrane and the catalyst to be operated by a controller. The controller supplies power to the hot wire based on temperature of the catalyst sensed by a first temperature sensor(24) and temperature of the hot wire sensed by a second temperature sensor(25) so as to control temperature of the hot wire so that temperature of the catalyst is kept within fixed range.

Description

촉매 컨버터 일체형 소음기{Muffler with catalytic converter}Muffler with catalytic converter

본 발명은 소음기에 관한 것으로, 좀더 상세하게는 촉매 컨버터와 소음기가 일체로 형성된 촉매 컨버터 일체형 소음기에 관한 것이다.The present invention relates to a silencer, and more particularly, to a catalytic converter integrated silencer formed integrally with a catalytic converter and a silencer.

일반적으로, 차량에는 배기가스에 포함된 유해 성분을 제거하기 위한 촉매컨버터가 구비되고 있는 바, 상기한 촉매 컨버터는 석유를 원료로 하는 엔진의 배기가스에 포함된 일산화탄소(CO), 탄화수소(HC), 질소산화물(NOx) 등과 같은 유해 성분을 촉매를 사용하여 저감시키는 장치이다.In general, the vehicle is provided with a catalytic converter for removing the harmful components contained in the exhaust gas, the catalytic converter is a carbon monoxide (CO), hydrocarbon (HC) contained in the exhaust gas of the petroleum-based engine , To reduce harmful components such as nitrogen oxides (NOx) using a catalyst.

즉, 상기한 촉매 컨버터는, 백금 또는 파라듐과 같은 산화촉매를 사용하여 하기의 반응식 1과 같이 일산화탄소(CO), 탄화수소(HC)를 산화시켜서 이산화탄소(CO2)와 물(H2O)을 생성하고, 로듐과 같은 환원촉매를 사용하여 하기의 반응식 2와 같이 질소산화물(N0)을 질소(N2)로 환원시킨다.That is, the catalytic converter uses carbon monoxide (CO) and hydrocarbon (HC) to oxidize carbon dioxide (CO 2 ) and water (H 2 O) by using an oxidation catalyst such as platinum or palladium, as shown in Scheme 1 below. A nitrogen oxide (N0) is reduced to nitrogen (N 2 ) as shown in Scheme 2 below using a reducing catalyst such as rhodium.

CO, HC + O2→ CO2+ H2OCO, HC + O 2 → CO 2 + H 2 O

NO → N2 NO → N 2

그러나, 상기한 바와 같은 종래 기술에 따른 촉매 컨버터는 소음기와는 별도로 개발되어 제작됨에 따라, 이전에 판매된 차량에 촉매 컨버터를 장착하기 위해서는 차량의 구조 변경이 필연적일 뿐만 아니라 촉매 컨버터 장착에 따른 부품수와 작업공수가 증가하게 되는 문제점이 있었다.However, the catalytic converter according to the prior art as described above is developed and manufactured separately from the silencer, so that the structural change of the vehicle is inevitably necessary in order to mount the catalytic converter on a previously sold vehicle, and the components according to the catalytic converter installation. There was a problem that the number and workmanship increased.

또한, 촉매가 차량의 플로어(floor)와 근접 부위에 설치됨에 따라 실내 및 주변 부품들과의 열해문제가 발생되는 문제점이 있었다.In addition, as the catalyst is installed in the vicinity of the floor (floor) of the vehicle, there is a problem that thermal degradation problems with the interior and surrounding components occurs.

또, 엔진의 초기 운전기간 중에는 연료가 농후한 상태가 되며, 특히 온도가 낮을 수록 연료가 더욱 농후해진다. 따라서, 저온 시동시 엔진으로부터일산화탄소(CO), 탄화수소(HC)가 다량 배출되지만, 촉매 컨버터는 낮은 온도에서 일산화탄소(CO), 탄화수소(HC)를 효율적으로 산화시키지 못하므로, 배기가스 정화 성능이 떨어지는 문제점이 있었다.In addition, during the initial operation of the engine, the fuel is rich, particularly, the lower the temperature, the richer the fuel. Therefore, although carbon monoxide (CO) and hydrocarbons (HC) are largely discharged from the engine at low temperature startup, the catalytic converter does not efficiently oxidize carbon monoxide (CO) and hydrocarbons (HC) at low temperatures, resulting in poor exhaust gas purification performance. There was a problem.

이에, 본 발명은 상기한 바와 같은 문제점들을 해소하기 위해 안출된 것으로, 촉매 컨버터와 소음기가 일체로 형성되어, 소음기를 교체하면 자동적으로 촉매 컨버터도 교환되므로 촉매 컨버터의 교환이 매우 용이할 뿐만 아니라 실내 및 주변 부품과의 열해문제를 해소할 수 있고, 촉매의 온도를 조절하여, 배기가스 정화 성능을 최적으로 유지할 수 있는 촉매 컨버터 일체형 소음기를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, the catalytic converter and the silencer is integrally formed, when the silencer is replaced, the catalytic converter is automatically replaced, so the exchange of the catalytic converter is very easy as well as indoors. And it is an object to provide a catalytic converter integrated silencer that can solve the thermal problem with the surrounding components, and by controlling the temperature of the catalyst, the optimum exhaust gas purification performance can be maintained.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 촉매 컨버터 일체형 소음기는, 엔진에서 배출되는 배기가스가 입구파이프와 소음기 하우징 및 출구파이프를 차례로 통과하여 배출되도록 되어 있는 소음기에 있어서,Catalytic converter integrated silencer according to the present invention for achieving the above object, in the silencer is that the exhaust gas discharged from the engine is discharged through the inlet pipe, silencer housing and outlet pipe in turn,

상기 소음기 하우징의 내부에, 상기 입구파이프를 통해 공급되는 배기가스를 반복적으로 팽창 및 수축시키는 제1배기소음저감수단과, 상기 제1배기소음저감수단을 통과한 배기가스를 산화/환원시켜서 정화하는 촉매와, 상기 촉매의 온도를 조절하기 위한 온도조절수단과, 상기 촉매를 통과한 배기가스를 반복적으로 팽창 및 수축시켜서 상기 출구파이프를 통해 배출하는 제2배기소음저감수단이 구비되어 있는 것을 특징으로 한다.Inside the silencer housing, the first exhaust noise reduction means for repeatedly expanding and contracting the exhaust gas supplied through the inlet pipe, and the exhaust gas passed through the first exhaust noise reduction means for oxidizing / reducing and purifying And a second exhaust noise reduction means for repeatedly expanding and contracting the exhaust gas passing through the catalyst and discharging the exhaust gas through the outlet pipe. do.

도 1은 본 발명에 따른 촉매 컨버터 일체형 소음기의 구성도,1 is a block diagram of a catalytic converter integrated silencer according to the present invention,

도 2는 촉매온도의 변화에 따른 탄화수소(HC), 일산화탄소(CO)의 감소율을 도시한 그래프,2 is a graph showing the reduction rate of hydrocarbon (HC) and carbon monoxide (CO) according to the change of the catalyst temperature,

도 3은 배기가스온도의 변화에 따른 입자상 물질(PM)의 변화율 도시한 그래프이다.3 is a graph showing the rate of change of particulate matter (PM) according to the change of exhaust gas temperature.

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

10 : 입구파이프20 : 소음기 하우징10: inlet pipe 20: silencer housing

21 : 다공막22 : 촉매21 porous membrane 22 catalyst

23 : 열선24, 25 : 온도센서23: hot wire 24, 25: temperature sensor

30 : 출구파이프30: outlet pipe

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 촉매 컨버터 일체형 소음기의 구성도이다. 상기 도 1에 도시된 바와 같이, 엔진에서 배출되는 배기가스는 입구파이프(10)와 소음기 하우징(20)의 내부 및 출구파이프(30)를 차례로 통과하여 배출된다.1 is a block diagram of a catalytic converter integrated silencer according to the present invention. As shown in FIG. 1, the exhaust gas discharged from the engine is discharged through the inlet pipe 10, the silencer housing 20, and the outlet pipe 30 in order.

상기 입구파이프(10)의 선단부 측면에는 다수의 구멍(12)이 형성되어 있고, 상기 소음기 하우징(20)의 내부에는 다공막(21)이 구비되어 있어, 배기가스가 상기 다수의 구멍(12)과 다공막(21)을 통과하여 팽창과 수축을 반복함에 따라, 배기가스의 압력이 대기압에 좀더 근접해지게 되어 배기가스 소음이 1차적으로 감소된다.A plurality of holes 12 are formed at the side of the tip end of the inlet pipe 10, and a porous membrane 21 is provided inside the silencer housing 20, so that the exhaust gas is formed in the plurality of holes 12. As the expansion and contraction are repeated through the porous membrane 21, the pressure of the exhaust gas becomes closer to the atmospheric pressure, and the exhaust gas noise is primarily reduced.

상기와 같이 다공막(21)을 통과한 배기가스는 촉매(22)를 통과하면서 배기가스 중에 포함된 일산화탄소(CO), 탄화수소(HC), 질소산화물(NOx)과 같은 유해가스 성분이 상기 촉매(22)에 의해 산화/환원 반응하여 이산화탄소(CO2), 물(H20), 질소 (N2)등과 같이 인체에 무해한 성분으로 변환된다.As described above, the exhaust gas passing through the porous membrane 21 passes through the catalyst 22, and harmful gas components such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) contained in the exhaust gas pass through the catalyst ( 22) oxidation / reduction reaction is converted into components harmless to the human body such as carbon dioxide (CO 2 ), water (H 2 0), nitrogen (N 2 ).

상기와 같이 촉매(22)에 의해 유해가스 성분이 제거된 배기가스는 출구파이프(30)에 형성된 다수의 구멍(32, 34))들을 통과하면서 팽창과 수축을 반복함에 따라 배기가스의 압력이 대기압에 좀더 근접해지게 되어 배기가스 소음이 2차적으로 감소된다.As described above, the exhaust gas from which noxious gas components are removed by the catalyst 22 passes through a plurality of holes 32 and 34 formed in the outlet pipe 30, and as a result of the expansion and contraction of the exhaust gas, the pressure of the exhaust gas is atmospheric pressure. Closer to, the secondary emissions are reduced.

또한, 상기 다공막(21)과 촉매(22)의 사이에는 열선(23)이 구비되어 있고, 상기 열선(23)은 컨트롤러(미도시됨)에 의해 작동된다. 상기 콘트롤러는 제1온도센서(24)에 의해 감지된 촉매(22)의 온도와, 제2온도센서(25)에 의해 감지된열선(23)의 온도를 바탕으로 상기 열선(23)에 전원을 공급하여 상기 촉매(22)의 온도를 소정범위내로 바람직하게는 200 ~ 300도 내로 유지시키도록 열선(23)의 온도를 제어한다.In addition, a heating wire 23 is provided between the porous membrane 21 and the catalyst 22, and the heating wire 23 is operated by a controller (not shown). The controller supplies power to the heating wire 23 based on the temperature of the catalyst 22 detected by the first temperature sensor 24 and the temperature of the heating wire 23 detected by the second temperature sensor 25. The temperature of the heating wire 23 is controlled to maintain the temperature of the catalyst 22 in a predetermined range, preferably within 200 to 300 degrees.

따라서, 촉매(22)가 최적으로 조절되어 배기가스 정화 성능이 최적으로 유지되고, 또한 상기 열선(23)에 의해 배기가스내에 포함된 입자상 물질이 연소되어 제거된다.Accordingly, the catalyst 22 is optimally adjusted so that the exhaust gas purification performance is optimally maintained, and the particulate matter contained in the exhaust gas is burned and removed by the heating wire 23.

상기와 같이 구성된 본 발명에 따른 촉매 컨버터 일체형 소음기의 작용 및 효과를 도 2 및 3을 참조하여 상세히 설명하면 다음과 같다.The operation and effects of the catalytic converter integrated silencer according to the present invention configured as described above will be described in detail with reference to FIGS. 2 and 3.

엔진의 초기 운전기간에는 연료가 농후한 상태로 운전되어 일산화탄소(CO), 탄화수소(HC)가 다량 배출된다. 특히, 온도가 낮을 수록 연료가 더욱 농후해짐에 따라 저온 시동시 엔진으로부터 일산화탄소(CO), 탄화수소(HC)가 더욱더 많이 배출되지만, 촉매는 낮은 온도에서 일산화탄소(CO), 탄화수소(HC)를 효율적으로 산화시키지 못하므로, 도 2에 도시된 바와 같이 배기가스 정화 성능이 떨어지게 된다.In the initial period of operation of the engine, the fuel is rich and carbon monoxide (CO) and hydrocarbons (HC) are emitted. In particular, the lower the temperature, the richer the fuel, and the more carbon monoxide (CO) and hydrocarbon (HC) are emitted from the engine during low temperature start-up, but the catalyst efficiently removes carbon monoxide (CO) and hydrocarbon (HC) at low temperatures. Since it does not oxidize, exhaust gas purification performance is degraded as shown in FIG.

또한, 도 3에 도시된 바와 같이, 촉매가 지나치게 가열된 경우에는 유기가용물, 황산염등과 같은 입자상 물질이 증가하게 된다.In addition, as shown in FIG. 3, when the catalyst is excessively heated, particulate matter such as organic solubles, sulfates, and the like increases.

따라서, 촉매의 배기가스 정화 성능을 최적으로 유지시키기 위해서는 촉매의 온도를 적절한 소정범위내로 유지시킬 필요가 있는데, 본 발명에서는 다공막(21)과 촉매(22)의 사이에 열선(23)을 장착하고, 미도시된 콘트롤러가, 제1온도센서(24)에 의해 감지된 촉매(22)의 온도와, 제2온도센서(25)에 의해 감지된 열선(23)의 온도를 바탕으로 상기 열선(23)에 전원을 공급하여 상기 촉매(22)의 온도를 소정범위내로 바람직하게는 200 ~ 300도 내로 유지시킨다.Therefore, in order to optimally maintain the exhaust gas purification performance of the catalyst, it is necessary to keep the temperature of the catalyst within an appropriate predetermined range. In the present invention, the heating wire 23 is provided between the porous membrane 21 and the catalyst 22. In addition, the controller not shown is based on the temperature of the catalyst 22 detected by the first temperature sensor 24 and the temperature of the heating wire 23 detected by the second temperature sensor 25. Power is supplied to 23 to maintain the temperature of the catalyst 22 within a predetermined range, preferably within 200 to 300 degrees.

따라서, 촉매(22)가 최적의 온도로 조절되어 배기가스 정화 성능이 최적으로 유지되고, 또한 상기 열선(23)에 의해 배기가스내에 포함된 입자상 물질이 연소되어 제거되는 것이다.Therefore, the catalyst 22 is adjusted to the optimum temperature so that the exhaust gas purification performance is optimally maintained, and the particulate matter contained in the exhaust gas is burned and removed by the heating wire 23.

이상에서 설명한 바와 같이 본 발명에 따르면, 촉매 컨버터와 소음기가 일체로 형성되어, 소음기를 교체하면 자동적으로 촉매 컨버터도 교환되므로 촉매 컨버터의 교환이 매우 용이할 뿐만 아니라 실내 및 주변 부품과의 열해문제를 해소할 수 있고, 촉매의 온도를 조절하여, 촉매의 배기가스 정화 성능을 최적으로 유지할 수 있다. 또한, 배기가스내에 포함된 입자상 물질(PM)을 연소시켜서, 입자상 물질을 제거할 수 있다.As described above, according to the present invention, the catalytic converter and the silencer are integrally formed, and when the silencer is replaced, the catalytic converter is also automatically replaced. The catalyst can be eliminated, and the temperature of the catalyst can be adjusted to optimally maintain the exhaust gas purification performance of the catalyst. In addition, the particulate matter (PM) contained in the exhaust gas can be burned to remove the particulate matter.

Claims (2)

엔진에서 배출되는 배기가스가 입구파이프와 소음기 하우징 및 출구파이프를 차례로 통과하여 배출되도록 되어 있는 소음기에 있어서,In the silencer, the exhaust gas discharged from the engine is discharged through the inlet pipe, the muffler housing and the outlet pipe in order. 상기 소음기 하우징의 내부에, 상기 입구파이프를 통해 공급되는 배기가스를 반복적으로 팽창 및 수축시키는 제1배기소음저감수단과, 상기 제1배기소음저감수단을 통과한 배기가스를 산화/환원시켜서 정화하는 촉매와, 상기 촉매의 온도를 조절하기 위한 온도조절수단과, 상기 촉매를 통과한 배기가스를 반복적으로 팽창 및 수축시켜서 상기 출구파이프를 통해 배출하는 제2배기소음저감수단이 구비되어 있는 것을 특징으로 하는 촉매 컨버터 일체형 소음기.Inside the silencer housing, the first exhaust noise reduction means for repeatedly expanding and contracting the exhaust gas supplied through the inlet pipe, and the exhaust gas passed through the first exhaust noise reduction means for oxidizing / reducing and purifying And a second exhaust noise reduction means for repeatedly expanding and contracting the exhaust gas passing through the catalyst and discharging the exhaust gas through the outlet pipe. Catalytic converter integrated silencer. 제 1 항에 있어서, 상기 온도조절수단은, 상기 제1배기소음저감수단과 촉매 사이에 설치된 열선과, 상기 촉매의 온도를 감지하는 제1온도센서와, 상기 열선의 온도를 감지하기 위한 제2온도센서와, 상기 온도센서들에 의해 감지된 온도를 바탕으로 상기 열선을 작동시켜서 상기 촉매의 온도를 소정범위내로 유지시키는 제어기를 포함하여 구성된 것을 특징으로 하는 촉매 컨버터 일체형 소음기.According to claim 1, wherein the temperature control means, a heating wire installed between the first exhaust noise reduction means and the catalyst, a first temperature sensor for sensing the temperature of the catalyst, a second for sensing the temperature of the heating wire And a controller configured to maintain a temperature of the catalyst within a predetermined range by operating the heating wire based on a temperature sensor and a temperature sensed by the temperature sensors.
KR1020020060641A 2002-10-04 2002-10-04 Muffler with catalytic converter KR20040031263A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771843B2 (en) 2015-11-04 2017-09-26 Hyundai Motor Company Muffler integrated type gasoline particulate filter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0434417U (en) * 1990-07-18 1992-03-23
JPH04279720A (en) * 1991-03-07 1992-10-05 Hino Motors Ltd Exhaust muffler
JP2000248921A (en) * 1999-02-26 2000-09-12 Shintaro Yamada Purifying silencer
US6203764B1 (en) * 1999-01-15 2001-03-20 Midwest Research Institute Vacuum-insulated catalytic converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0434417U (en) * 1990-07-18 1992-03-23
JPH04279720A (en) * 1991-03-07 1992-10-05 Hino Motors Ltd Exhaust muffler
US6203764B1 (en) * 1999-01-15 2001-03-20 Midwest Research Institute Vacuum-insulated catalytic converter
JP2000248921A (en) * 1999-02-26 2000-09-12 Shintaro Yamada Purifying silencer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771843B2 (en) 2015-11-04 2017-09-26 Hyundai Motor Company Muffler integrated type gasoline particulate filter

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