KR20020058675A - Catalytic converter - Google Patents

Catalytic converter Download PDF

Info

Publication number
KR20020058675A
KR20020058675A KR1020000086805A KR20000086805A KR20020058675A KR 20020058675 A KR20020058675 A KR 20020058675A KR 1020000086805 A KR1020000086805 A KR 1020000086805A KR 20000086805 A KR20000086805 A KR 20000086805A KR 20020058675 A KR20020058675 A KR 20020058675A
Authority
KR
South Korea
Prior art keywords
electrode member
cylinder
exhaust gas
catalytic converter
monolith
Prior art date
Application number
KR1020000086805A
Other languages
Korean (ko)
Inventor
김연승
Original Assignee
이계안
현대자동차주식회사
류정열
기아자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이계안, 현대자동차주식회사, 류정열, 기아자동차주식회사 filed Critical 이계안
Priority to KR1020000086805A priority Critical patent/KR20020058675A/en
Publication of KR20020058675A publication Critical patent/KR20020058675A/en

Links

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
    • F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious 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
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides

Abstract

PURPOSE: A catalyst converter is provided to reduce the foreign materials exhausted from a diesel engine by adding a plasma reactor to an oxidization catalyst. CONSTITUTION: A catalyst converter comprises a cylinder(10) having an inlet port and an exhaust port which an exhaust gas discharged from an engine is flowed in through and discharged from, an electrode member(20) respectively installed at one side of the inlet port and the exhaust port, a monolith(30) installed at the periphery of the cylinder to be intersected with the electrode member, an NOx removing catalyst(40) installed in the electrode member and the monolith to remove the harmful material contained in the exhaust gas, and a power supply(50) connected to the electrode member to supply a power to the electrode member.

Description

촉매 컨버터{CATALYTIC CONVERTER}Catalytic Converter {CATALYTIC CONVERTER}

본 발명은 촉매 컨버터에 관한 것으로서, 보다 상세하게는 산화 촉매에 플라즈마 반응기를 덧붙여 디젤엔진에서 배출되는 입자상물질(PM; Particulate Matter) 등의 이물질을 저감시킬 수 있도록 개선된 촉매 컨버터에 관한 것이다.The present invention relates to a catalytic converter, and more particularly, to a catalytic converter improved by adding a plasma reactor to an oxidation catalyst to reduce foreign substances such as particulate matter (PM) discharged from a diesel engine.

가솔린 엔진의 한계점인 열 효율성과 연비 저감이 이루어질 수 있는 대안으로 디젤엔진이 강력히 추천되고 있으며, 사용자의 기호 또한 이에 발맞추어 그 수요가 급격히 증가하고 있다.Diesel engines are strongly recommended as alternatives to gasoline engines, which can reduce thermal efficiency and fuel economy, and demands are rapidly increasing in line with user preferences.

그러나 디젤엔진의 사용이 계속 증가하면서 많은 선진국에서는 디젤엔진의 배기가스 배출 허용기준을 강화하고 있으며, 디젤엔진에서 배출되는 오염물질을 줄이도록 강요하고 있다. 이는 자동차업계에로서 마켓쉐어(market share)를 잠식당하는 형상이며, 이는 이러한 규제를 만족함으로써 더 큰 시장을 개척할 수 있는 가능성을 내포하고 있다고도 할 수 있다.However, as the use of diesel engines continues to increase, many developed countries are tightening their emission standards and are forced to reduce their emissions. This is a form of encroaching market share for the automotive industry, which implies the possibility of opening up larger markets by satisfying these regulations.

즉, 이 규제가 유럽과 미국을 중심으로 점차 강화됨에 따라 기존 방식의 후처리 장치에서 벗어난 새로운 개념의 배기 정화장치가 절실하게 요구되게 되었으며, 강화되는 배출가스 규제를 먼저 만족하는 회사만이 살아남는 형국이다.In other words, as this regulation is gradually strengthened around Europe and the United States, a new concept of exhaust purifier is desperately needed from the conventional aftertreatment system, and only companies that satisfy the tightened emission regulations first survive. to be.

이에 따라 그 대안으로서 현재 여러 종류의 대책이 연구중이며, 그 중 플라즈마를 이용한 배기 정화 시스템이 NOx와 입자상물질을 동시에 저감할 수 있는 가능성을 가지고 새로이 관심을 받고 있다.Accordingly, as an alternative, various kinds of countermeasures are currently being studied. Among them, an exhaust purification system using plasma has received new attention with the possibility of simultaneously reducing NOx and particulate matter.

한편, 종래의 디젤엔진용 산화 촉매의 주요 역할은 입자상물질의 제거가 주요 목표이다. 그러나, 앞으로 배기가스 규제가 더욱 강화되어 NOx의 처리가 문제가 되며, 그 양은 배기가스 재순환 장치 또는 시스템에 의해 줄일 수도 있으나, 재순환 배기 가스량을 증가시킬 경우, 입자상물질 발생량이 많아져, 기존의 산화촉매로는 법규 대응이 불가능한 상황이다.On the other hand, the main role of the conventional oxidation catalyst for diesel engine is the removal of particulate matter is the main goal. However, in the future, the exhaust gas regulation is further strengthened, and the treatment of NOx becomes a problem, and the amount may be reduced by the exhaust gas recirculation apparatus or system. It is not possible to respond to regulations with catalysts.

또한 입자상물질을 포함한 CO, HC의 배출 대응에 있어서도 촉매의 귀금속 함유량 등이 많아져야 하므로 비용면에서도 문제가 될 수 있다.In addition, in response to the emission of CO and HC including particulate matter, the catalyst must increase the content of precious metals, etc., which can be a problem in terms of cost.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 산화 촉매에 플라즈마 반응기를 덧붙여 디젤엔진에서 배출되는 이물질을 저감시킬 수 있도록 한 촉매 컨버터를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a catalytic converter capable of reducing foreign substances discharged from a diesel engine by adding a plasma reactor to an oxidation catalyst.

도 1은 본 발명에 따른 촉매 컨버터의 구성을 나타낸 개략적인 도면.1 is a schematic view showing the configuration of a catalytic converter according to the present invention.

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

10. 실린더20. 전극부재10. Cylinder 20. Electrode member

30. 모노리쓰40. 질소산화물 제거 촉매30. Monolith 40. NOx removal catalyst

50. 전원공급정치50. Power Supply Politics

상기와 같은 목적을 달성하기 위한 본 발명의 촉매 컨버터는, 엔진으로부터 배출되는 배기가스가 유입되고 다시 배출되는 유입구 및 배출구가 형성된 실린더와; 상기 실린더내의 상기 유입구 및 상기 배출구의 일측에 각각 설치된 전극부재와; 상기 전극부재와 교차되게 상기 실린더 외주면에 설치되어 상기 전극부재와 함께 케이싱 형상을 하는 모노리쓰와; 상기 전극부재 및 상기 모노리쓰 내에 설치되어 배기가스에 함유된 유해물질을 제거토록 하는 질소산화물 제거 촉매와; 상기 전극부재에 전원을 공급하기 위해 상기 전극부재와 연결 설치된 전원공급장치;를 포함하는 것을 그 특징으로 한다.Catalytic converter of the present invention for achieving the above object, the exhaust gas is discharged from the engine flows in and out the cylinder is formed with an inlet and outlet is discharged again; Electrode members respectively provided at one side of the inlet and the outlet of the cylinder; A monolith disposed on the outer circumferential surface of the cylinder to intersect with the electrode member to form a casing together with the electrode member; A nitrogen oxide removal catalyst installed in the electrode member and the monolith to remove harmful substances contained in exhaust gas; And a power supply device connected to the electrode member to supply power to the electrode member.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1에는 본 발명에 따른 촉매 컨버터를 개략적으로 나타낸 구성도가 도시되어 있다.1 shows a schematic diagram of a catalytic converter according to the present invention.

도면을 참조하면, 본 발명에 따른 촉매 컨버터는, 엔진으로부터 배출되는 배기가스가 유입되고 다시 배출되는 유입구(11) 및 배출구(12)가 형성된 실린더(10)와, 상기 실린더(10)내의 유입구(11) 및 배출구(12)의 일측에 각각 설치된 전극부재(20)와, 상기 전극부재(20)와 교차되게 실린더(10) 외주면에 설치되어 전극부재(20)와 함께 케이싱(casing) 형상을 하는 모노리쓰(monolith)(30)와, 상기 전극부재(20) 및 모노리쓰(30) 내에 설치되어 배기가스에 함유된 유해물질을 제거토록 하는 질소산화물 제거 촉매(DeNOx 촉매)(40)와, 상기 전극부재(20)에 전원을공급하기 위해 전극부재(20)와 연결 설치된 전원공급장치(50)를 포함하여 구성된다.Referring to the drawings, the catalytic converter according to the present invention includes a cylinder 10 having an inlet 11 and an outlet 12 through which the exhaust gas discharged from the engine is introduced and discharged again, and an inlet hole in the cylinder 10. 11) and the electrode member 20 provided on one side of the discharge port 12 and the outer peripheral surface of the cylinder 10 to intersect the electrode member 20 is installed to form a casing (casing) with the electrode member 20 A monolith 30, a nitrogen oxide removal catalyst 40 installed in the electrode member 20 and the monolith 30 to remove harmful substances contained in exhaust gas, and It is configured to include a power supply device 50 is connected to the electrode member 20 to supply power to the electrode member 20.

상기 실린더(10)의 유입구(11) 및 배출구(12)는 배기가스가 실린더(10)의 원주방향으로 유입되어 균일한 분포로 퍼질 수 있도록 원뿔형으로 이루어진다.The inlet 11 and the outlet 12 of the cylinder 10 has a conical shape so that the exhaust gas flows in the circumferential direction of the cylinder 10 to spread in a uniform distribution.

그리고, 상기 모노리쓰(30)의 내면 일측에는 워시 코트(wash-coat)가 구비된다.In addition, a wash coat is provided on one side of the inner surface of the monolith 30.

상기 전극부재(20)는 배기가스가 유동될 수 있도록 매시(mesh) 형태로 이루어지고, 상기 모노리쓰(30)는 배기가스가 유동될 수 있도록 하니컴(honey-comb) 형태로 이루어진다.The electrode member 20 is formed in a mesh form to allow the exhaust gas to flow, and the monolith 30 is formed in a honey-comb form to allow the exhaust gas to flow.

상술한 바와 같은 구성을 갖는 본 발명에 따른 촉매 컨버터의 작용을 설명하면 다음과 같다.Referring to the operation of the catalytic converter according to the present invention having the configuration as described above is as follows.

본 발명에 따른 촉매 컨버터는, 기존의 산화촉매에 플라즈마 반응기를 부가하여 디젤엔진에서 배출되는 입자상물질 저감 효율을 증가시키는 것으로, 이를 보다 구체적으로 설명하기로 한다.Catalytic converter according to the present invention, by adding a plasma reactor to the existing oxidation catalyst to increase the efficiency of particulate matter discharged from the diesel engine, it will be described in more detail.

도 1에 도시된 바와 같이, 배기가스가 유동되는 엔진의 배기계의 일측에 실린더(10)를 설치하고, 그 전후에 매시 형태의 전극부재(20)를 설치한다. 그리고 이 전극부재(20)에 예컨대 AC 고전압을 인가하여 전극부재(20) 및 모노리쓰(30) 내에서 즉, 촉매 담체 내에서 플라즈마 반응을 시킨다.As shown in FIG. 1, a cylinder 10 is installed on one side of an exhaust system of an engine through which exhaust gas flows, and an electrode member 20 in a mesh form is provided before and after. For example, an AC high voltage is applied to the electrode member 20 to cause a plasma reaction in the electrode member 20 and the monolith 30, that is, in the catalyst carrier.

이 촉매 담체 내에서 플라즈마 반응을 발생시킬 경우, 많은 레디칼이 생성되어 No가 NO2로 변환되어 수트(soot)의 산화온도를 저감시키는데 참여되고, 많은 양의 입자상물질이 산화촉매와 플라즈마 반응에 의해 제거될 수 있다.When a plasma reaction is generated in this catalyst carrier, a lot of radicals are produced and No is converted into NO 2 to reduce the oxidation temperature of the soot, and a large amount of particulate matter is removed by the oxidation catalyst and the plasma reaction. Can be.

그리고 담체는 플라즈마 반응의 유전체 역할을 하여 스트리머 반응에서 스파크로의 전이를 방지시켜 주며, 담체에 흡착된 입자상물질을 산화시킨다.And the carrier serves as a dielectric of the plasma reaction to prevent the transition to the spark in the streamer reaction, oxidizing the particulate matter adsorbed on the carrier.

상술한 바와 같이 본 발명에 따른 촉매 컨버터는 다음과 같은 효과를 갖는다.As described above, the catalytic converter according to the present invention has the following effects.

배출되는 배기가스의 오염물질을 제거할 수 있고, 질소산화물 제거 촉매와 디젤 입자상물질 필터의 기능을 겸할 수 있어 장치가 간단해지고, 비용이 절감된다.Contaminants in the exhaust gases can be removed, and the functions of the nitrogen oxide removal catalyst and the diesel particulate filter can be combined to simplify the apparatus and reduce costs.

그리고 기존의 전기장치로 연결되므로 원가절감이 이루어질 수 있다.And since it is connected to the existing electric device can be reduced cost.

본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 보호범위는 첨부된 특허청구범위에 의해서만 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (5)

엔진으로부터 배출되는 배기가스가 유입되고 다시 배출되는 유입구 및 배출구가 형성된 실린더와;A cylinder having an inlet port and an outlet port through which exhaust gas discharged from the engine is introduced and discharged again; 상기 실린더내의 상기 유입구 및 상기 배출구의 일측에 각각 설치된 전극부재와;Electrode members respectively provided at one side of the inlet and the outlet of the cylinder; 상기 전극부재와 교차되게 상기 실린더 외주면에 설치되어 상기 전극부재와 함께 케이싱 형상을 하는 모노리쓰와;A monolith disposed on the outer circumferential surface of the cylinder to intersect with the electrode member to form a casing together with the electrode member; 상기 전극부재 및 상기 모노리쓰 내에 설치되어 배기가스에 함유된 유해물질을 제거토록 하는 질소산화물 제거 촉매와;A nitrogen oxide removal catalyst installed in the electrode member and the monolith to remove harmful substances contained in exhaust gas; 상기 전극부재에 전원을 공급하기 위해 상기 전극부재와 연결 설치된 전원공급장치;를 포함하는 것을 특징으로 하는 촉매 컨버터.And a power supply device connected to the electrode member to supply power to the electrode member. 제1항에 있어서,The method of claim 1, 상기 실린더의 상기 유입구 및 배출구는 배기가스가 상기 실린더의 원주방향으로 유입되어 균일한 분포로 퍼질 수 있도록 원뿔형으로 이루어진 것을 특징으로 하는 촉매 컨버터.The inlet and outlet of the cylinder is a catalytic converter, characterized in that the exhaust gas flows in the circumferential direction of the cylinder is conical so as to spread in a uniform distribution. 제1항에 있어서,The method of claim 1, 상기 모노리쓰의 내면 일측에는 워시 코트가 구비된 것을 특징으로 하는 촉매 컨버터.Catalytic converter, characterized in that the wash coat is provided on one side of the inner surface of the monolith. 제1항에 있어서,The method of claim 1, 상기 전극부재는 배기가스가 유동될 수 있도록 매시 형태로 이루어진 것을 특징으로 하는 촉매 컨버터.The electrode member is a catalytic converter, characterized in that made in the form of a mesh so that the exhaust gas flows. 제1항에 있어서,The method of claim 1, 상기 모노리쓰는 배기가스가 유동될 수 있도록 하니컴 형태로 이루어진 것을 특징으로 하는 촉매 컨버터.The monolith is a catalytic converter, characterized in that in the form of honeycomb so that the exhaust gas flows.
KR1020000086805A 2000-12-30 2000-12-30 Catalytic converter KR20020058675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000086805A KR20020058675A (en) 2000-12-30 2000-12-30 Catalytic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020000086805A KR20020058675A (en) 2000-12-30 2000-12-30 Catalytic converter

Publications (1)

Publication Number Publication Date
KR20020058675A true KR20020058675A (en) 2002-07-12

Family

ID=27689761

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000086805A KR20020058675A (en) 2000-12-30 2000-12-30 Catalytic converter

Country Status (1)

Country Link
KR (1) KR20020058675A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120126509A (en) * 2011-05-12 2012-11-21 한국전력공사 Apparatus and method for treating exhaust gas in order to minimize amount of sulfur dioxide oxidized to sulfur trioxide using sacrificial anode system in selective catalytic reduction process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6349216A (en) * 1986-08-14 1988-03-02 Komatsu Ltd Filter for purifying exhaust gas
JPH0610652A (en) * 1992-06-24 1994-01-18 Isuzu Motors Ltd Exhaust gas emission control device for diesel engine
KR950012139A (en) * 1993-10-14 1995-05-16 곤도 다카오 Optical molding method and optical molding apparatus
JPH07204518A (en) * 1994-01-28 1995-08-08 Shimadzu Corp Purifying device for exhaust gas from automobile
US5588292A (en) * 1994-06-28 1996-12-31 Shimadzu Corporation Exhaust gas purifier
KR20000075396A (en) * 1999-05-20 2000-12-15 김덕중 Exhaust gas purifier of internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6349216A (en) * 1986-08-14 1988-03-02 Komatsu Ltd Filter for purifying exhaust gas
JPH0610652A (en) * 1992-06-24 1994-01-18 Isuzu Motors Ltd Exhaust gas emission control device for diesel engine
KR950012139A (en) * 1993-10-14 1995-05-16 곤도 다카오 Optical molding method and optical molding apparatus
JPH07204518A (en) * 1994-01-28 1995-08-08 Shimadzu Corp Purifying device for exhaust gas from automobile
US5588292A (en) * 1994-06-28 1996-12-31 Shimadzu Corporation Exhaust gas purifier
KR20000075396A (en) * 1999-05-20 2000-12-15 김덕중 Exhaust gas purifier of internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120126509A (en) * 2011-05-12 2012-11-21 한국전력공사 Apparatus and method for treating exhaust gas in order to minimize amount of sulfur dioxide oxidized to sulfur trioxide using sacrificial anode system in selective catalytic reduction process
KR101879204B1 (en) * 2011-05-12 2018-07-17 한국전력공사 Apparatus and method for treating exhaust gas in order to minimize amount of sulfur dioxide oxidized to sulfur trioxide using sacrificial anode system in selective catalytic reduction process

Similar Documents

Publication Publication Date Title
US7380395B2 (en) Exhaust gas system
KR101361595B1 (en) Method for regenerating soot filters in the exhaust gas system of a lean mix engine, and exhaust gas system therefor
WO1996005417A1 (en) Series combination catalytic converter
US11603784B2 (en) Exhaust system and features thereof
JP2011089521A (en) SYSTEM FOR NOx REDUCTION IN EXHAUST GAS
WO2008157015A1 (en) Emission abatement assembly having a mixing baffle and associated method
US20070122319A1 (en) Particulate filter
JP2009197695A (en) Exhaust emission control device
JP2009197695A5 (en)
JP2010242515A (en) Exhaust emission control system and exhaust emission control method
US6159429A (en) Apparatus for treating hydrocarbon and carbon monoxide gases
CN211598795U (en) Post-processing system
KR20020058675A (en) Catalytic converter
KR100405676B1 (en) Device of reducing noxious substances for a diesel engine
KR100387485B1 (en) Device of reducing noxious substances for a diesel engine
KR20000014271U (en) Catalytic Integrated Multistage Corona Reactor
KR100387477B1 (en) Device of reducing noxious substances for a diesel engine
EP4048431A1 (en) Exhaust system and features thereof
KR100411050B1 (en) Device of reducing noxious substances adopting muffler
JP2019085878A (en) After-treatment device
AU2020369432B2 (en) Exhaust system and features thereof
JPH10205325A (en) Nox reducing and removing honeycomb catalyst device
KR20020017511A (en) an apparatus for purifying exhaust using the plasma
KR20210001021A (en) Exhaust gas aftertreatment system
KR19980062495A (en) Overheat prevention structure of automobile converter

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application