According to an embodiment of the present invention, an exhaust gas purification device comprises: an engine which produces power by burning a mixture of air and fuel and exhausts exhaust gas generated during the combustion process to the outside through an exhaust pipe; a first three way catalyst (TWC) and a second TWC which are sequentially mounted on the exhaust pipe at the rear end of the engine, and convert harmful gases including carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) contained in the exhaust gas into harmless components through a redox reaction; and an electrically heated catalyst (EHC) which is mounted between the first TWC and the second TWC and is heated by applying power to transfer heat to the first TWC and the second TWC to reach the catalyst activation temperature.

    본 발명의 일 실시예에 따른 배출 가스 정화 장치는, 공기와 연료의 혼합기를 태워 동력을 생산하고, 연소 과정에서 발생한 배출 가스를 배기 파이프를 통해 외부로 배출하는 엔진과, 상기 엔진 후단의 배기 파이프에 차례로 장착되며, 상기 배출 가스에 포함된 일산화탄소(CO), 탄화수소(HC), 및 질소산화물(NOx)을 포함하는 유해 가스를 산화환원 반응을 통해 무해한 성분으로 변환시키는 제1 삼원 촉매(Three Way Catalyst: TWC) 및 제2 삼원 촉매, 및 상기 제1 삼원 촉매와 제2 삼원 촉매 사이에 장착되고, 전력 인가에 의해 히팅되어 상기 제1 삼원 촉매 및 제2 삼원 촉매에 열을 전달하여 촉매 활성화 온도에 도달하도록 하는 전기 가열식 촉매(EHC)를 포함한다.


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    Title :

    APPARATUS FOR PURIFYING EXHAUST GAS


    Additional title:

    배출 가스 정화 장치


    Contributors:

    Publication date :

    2024-01-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B01D SEPARATION , Trennen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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