KR20080001867A - Control device for regenerating catalyzed particulate filter - Google Patents

Control device for regenerating catalyzed particulate filter Download PDF

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KR20080001867A
KR20080001867A KR1020060060294A KR20060060294A KR20080001867A KR 20080001867 A KR20080001867 A KR 20080001867A KR 1020060060294 A KR1020060060294 A KR 1020060060294A KR 20060060294 A KR20060060294 A KR 20060060294A KR 20080001867 A KR20080001867 A KR 20080001867A
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South Korea
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path
intake
engine
control valve
exhaust
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KR1020060060294A
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Korean (ko)
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KR101231408B1 (en
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박상현
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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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D43/00—Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
    • 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
    • F01N2260/04—Exhaust treating devices having provisions not otherwise provided for for regeneration or reactivation, e.g. of catalyst

Abstract

A regeneration control device for a catalyzed particulate filter is provided to prevent damage of the filter by preventing sudden rise of temperature of the filter cause due to the combustion of soot in the filter. A regeneration control device includes a catalyzed particulate filter(14), a branch path(18), an exhaust gas component separation unit(20), an open/shut control valve(22), a load detection unit(24), and a control unit(26). The catalyzed particulate filter is mounted on an exhaust path(12) of an engine(10). The branch path is branched from the exhaust path and communicated to an intake path(16) of the engine. The exhaust gas component separation unit is arranged on the branch path, and separates exhaust gas into nitrogen and oxygen components and supplies only the nitrogen component to the intake path. The open/shut control valve is mounted on the intake path and the branch path, and controls intake and exhaust. The load detection unit detects load of the engine. The control unit lowers concentration of oxygen of intake air by controlling opening/shutting operation of the open/shut control valve and prevents regeneration of the catalyzed particulate filter when the load detection unit detects overrun of the engine.

Description

디젤매연 촉매여과필터의 재생 제어장치{control device for regenerating catalyzed particulate filter}Regeneration control device for diesel particulate catalytic filtration filter {control device for regenerating catalyzed particulate filter}

도 1은 본 발명에 따른 디젤매연 촉매여과필터의 재생 제어장치의 구성을 도시한 도면.1 is a view showing the configuration of a regeneration control apparatus for a diesel particulate catalyst filtration filter according to the present invention.

도 2는 도 1에 도시된 배기가스 성분 분리부의 구성을 도시한 도면.FIG. 2 is a diagram showing the configuration of the exhaust gas component separator shown in FIG. 1; FIG.

< 도면의 주요 부분에 대한 부호의 설명 >    <Description of Symbols for Main Parts of Drawings>

10-엔진 12-배기경로10-engine 12-exhaust path

14-디젤매연 촉매여과필터 16-흡기경로14-Diesel Soot Catalytic Filtration Filters 16-Intake Path

18-분기경로 20-배기가스 성분 분리부18-branch route 20-exhaust gas component separator

22-개폐조절밸브 24-부하 검출부22-opening control valve 24-load detection part

26-제어 유니트26-control unit

본 발명은 디젤매연 촉매여과필터의 재생 제어장치에 관한 것으로, 보다 상세하게는 엔진의 동작중 오버런 진입시 배기가스중 포함된 과도한 산소성분에 의한 촉매여과필터의 열해에 의한 손상을 방지하는 디젤매연 촉매여과필터의 재생 제어장치에 관한 것이다.The present invention relates to a regeneration control apparatus for a diesel particulate catalyst filtration filter, and more particularly, a diesel particulate catalyst for preventing damage due to thermal degradation of a catalyst filtration filter caused by excessive oxygen contained in exhaust gas when an overrun enters during operation of an engine. A regeneration control apparatus for a filtration filter.

최근 들어, 선진 각국에서는 대기오염의 방지를 위해 디젤차량에 대한 배기가스의 규제를 점차 강화하고 있는 추세인 바, 미국의 경우 현재 시행중인 연방규제를 2004년 이후 대폭 강화하였고, 유럽연합의 경우에도 2000년 Euro-3, 2005년 Euro-4의 규정을 각각 적용하고 있으며, 아울러 향후 적용될 Euro-5의 규정에서는 현재 Euro-4의 규정이 허용하는 기준에 50%의 수준으로 질소 산화물과 입자상 물질에 대한 규제를 각각 강화할 예정이다.Recently, the developed countries are gradually tightening the regulation of exhaust gas for diesel vehicles to prevent air pollution. In the United States, the federal regulations that have been in force have been strengthened since 2004. The Euro-3 in 2000 and the Euro-4 in 2005 apply respectively, and in the future, the Euro-5 regulations apply to nitrogen oxides and particulate matter at a level of 50% of the current Euro-4 standard. The regulations will be strengthened.

즉, 디젤엔진을 탑재하고 있는 차량에 있어 대기 오염의 원인은 주로 질소 산화물(NOx)과 매연(Soot)이라 지칭되는 입자상 물질(PM;Particulate Matter)에 의해 발생되는 것이므로, 디젤 차량의 배기규제는 주로 질소 산화물과 입자상 물질에 해당되는 것이다. In other words, in vehicles equipped with diesel engines, air pollution is mainly caused by nitrogen oxides (NOx) and particulate matter (PM) called soot. It mainly corresponds to nitrogen oxides and particulate matter.

이에 따라, 종래 디젤차량에서는 Euro-4 규제를 맞추기 위해 배기계통에 디젤매연 촉매여과필터(CPF; Catalyzed Particulate Filter, 촉매가 코팅된 디젤매연 여과필터[DPF; Diesel Particulate Filter]로서 촉매코팅 매연필터 또는 디젤매연 여과장치로도 지칭됨)와 같은 후처리 장치를 필수적으로 적용하고 있는 바, 상기 디젤매연 촉매여과필터의 경우에는 적절한 배기가스의 온도와 산소의 농도를 유지하여 필터의 재생시기를 조절하고 제어하는 기술이 가장 중요한 요소중 하나이다.Accordingly, in a conventional diesel vehicle, a diesel particulate catalyst filter (CPF; Catalyzed Particulate Filter), a catalyst coated diesel particulate filter (DPF; Diesel Particulate Filter) in the exhaust system in order to meet the Euro-4 regulation, or Post-treatment devices such as diesel particulate filtration are essentially applied. In the case of the diesel particulate catalytic filtration filter, the regeneration timing of the filter is controlled by maintaining an appropriate exhaust gas temperature and oxygen concentration. Control technology is one of the most important factors.

그러나, 종래 디젤차량에서 디젤매연 촉매여과필터에서는 내부 온도를 대략 600℃ 정도로 유지하는 것이 필터에 축적된 매연의 연소에 따른 재생에 가장 최적 의 상태이었으나, 엔진의 운전 조건이 오버런으로 진입하는 경우에는 디젤매연 촉매여과필터로 유입되는 산소의 농도가 과다해져 급격한 매연의 연소가 발생하게 되므로, 이로 인해 디젤매연 촉매여과필터의 내부 온도는 대략 1000℃를 상회하게 되는 상황이 유발되는 문제가 있었다.However, in conventional diesel vehicles, maintaining the internal temperature at about 600 ° C. was most optimal for regeneration due to the combustion of soot accumulated in the filter. However, when the engine operating conditions enter the overrun, Since the concentration of oxygen introduced into the diesel particulate catalyst filtration filter is excessive, the combustion of the exhaust gas occurs rapidly, which causes a problem that the internal temperature of the diesel particulate catalyst filter exceeds about 1000 ° C.

이러한 문제는 고온의 환경에서 디젤매연 촉매여과필터가 녹아 내리는 현상, 즉 제어되지 않은 필터의 재생이라는 현상이 발생하기 때문에 기인하는 것이다.This problem is due to the phenomenon that the diesel particulate catalyst filter melts in a high temperature environment, that is, uncontrolled filter regeneration occurs.

그럼에도 불구하고, 현재까지 엔진의 오버런시 디젤매연 촉매여과필터가 녹아내리는 열해의 현상을 보다 적극적으로 제어할 수 있는 기술이 개발되지 못해 디젤매연 촉매여과필터의 개발에 중요한 문제점으로 부각되고 있다.Nevertheless, until now, no technology has been developed to more actively control the phenomenon of thermal degradation in which diesel particulate catalytic filter filters melt during overrun of the engine. Therefore, it is emerging as an important problem in the development of diesel particulate catalyst filters.

이에 본 발명은 상기와 같은 점을 감안하여 안출된 것으로, 디젤엔진의 운전중 오버런의 발생시 배기가스중 포함된 질소 성분을 흡기계통으로 재공급하여 흡입공기의 산소 농도를 낮추도록 함으로써, 디젤매연 촉매여과필터의 재생을 회피하고 그로 인한 필터의 열해를 방지할 수 있도록 하는 데 그 목적이 있다.Accordingly, the present invention has been made in view of the above, by re-supplying the nitrogen component contained in the exhaust gas to the intake pipe when the overrun occurs during operation of the diesel engine to lower the oxygen concentration of the intake air, diesel soot catalyst The purpose is to avoid regeneration of the filtration filter and to prevent thermal degradation of the filter.

상기와 같은 목적을 달성하기 위한 본 발명은, 엔진의 배기경로상에 설치된 디젤매연 촉매여과필터와; The present invention for achieving the above object, the diesel particulate catalyst filtration filter installed on the exhaust path of the engine;

상기 배기경로로부터 분기되어 상기 엔진의 흡기경로와 연통되도록 설치된 분기경로; A branch path branched from the exhaust path and installed to communicate with the intake path of the engine;

상기 분기경로상에 설치되어 배기가스를 질소와 산소 성분으로 각각 분리하여 질소 성분만을 상기 흡기경로에 제공하는 배기가스 성분 분리부; An exhaust gas component separator installed on the branch path to separate the exhaust gas into nitrogen and oxygen components to provide only nitrogen components to the intake path;

상기 흡기경로와 상기 분기경로상에 각각 설치되어 흡기와 배기의 유동을 각각 조절하는 개폐조절밸브; Opening and closing control valves respectively provided on the intake path and the branch path to control the flow of intake and exhaust;

상기 엔진의 부하를 검출하는 부하 검출부 및; A load detector for detecting a load of the engine;

상기 부하 검출부로부터 상기 엔진의 오버런 검출시, 상기 개폐조절밸브의 개폐를 각각 조절하여 흡입공기의 산소 농도를 저하시켜 상기 디젤매연 촉매여과필터의 재생을 방지하는 제어 유니트를 포함하여 구성된 것을 특징으로 한다.Characterized in that to independently control the opening and closing of the engine overrun detected when the opening and closing control valve from the load detecting section decreases the oxygen concentration of the group intake ipgong configured with a control unit for preventing the reproduction of the DPF do.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 도 1에 도시된 바와 같이, 엔진(10)의 배기경로(12)상에 디젤매연 촉매여과필터(14)가 설치되고, 상기 배기경로(12)로부터 분기되어 상기 엔진(10)의 흡기경로(16)와 연통되도록 분기경로(18)가 설치되며, 상기 분기경로(18)에는 배기가스의 성분을 질소 성분과 산소 성분으로 각각 분리하여 질소 성분만을 상기 흡기경로(16)에 제공하는 배기가스 성분 분리부(20)가 설치된다.As shown in FIG. 1, the diesel particulate catalyst filtration filter 14 is installed on the exhaust path 12 of the engine 10, and is branched from the exhaust path 12. A branch path 18 is provided to communicate with the intake path 16. The branch path 18 separates the components of the exhaust gas into nitrogen and oxygen components, respectively, to provide only the nitrogen component to the intake path 16. An exhaust gas component separator 20 is provided.

그리고, 상기 흡기경로(16)와 상기 분기경로(18)상에는 흡기와 배기의 유동을 각각 조절하는 개폐조절밸브(22)가 설치되고, 상기 흡기경로(16)에는 상기 엔진(10)의 부하를 검출하는 부하 검출부(24)가 설치된다.On the intake path 16 and the branch path 18, an opening / closing control valve 22 for regulating the flow of intake and exhaust is provided, and the intake path 16 loads the engine 10. The load detection part 24 which detects is provided.

또한, 제어 유니트(26)는 상기 부하 검출부(24)로부터 상기 엔진(10)의 오버 런 검출시, 상기 개폐조절밸브(22)의 개폐를 각각 조절하여 흡입공기의 산소 농도를 저하시켜 상기 디젤매연 촉매여과필터(14)의 재생을 방지하도록 구비된다.In addition, the control unit 26 controls the opening and closing of the opening / closing control valve 22, respectively, when detecting the overrun of the engine 10 from the load detection unit 24, thereby lowering the oxygen concentration of the intake air, thereby reducing the diesel particulate smoke. It is provided to prevent regeneration of the catalyst filtration filter (14).

여기서, 상기 배기가스 성분 분리부(20)는 도 2에 도시된 바와 같이, 상기 분기경로(18)상에 설치된 EP수지재의 수지판관부(20a)와, 상기 수지판관부(20a)의 내부에 길이방향을 따라 배치된 다수의 중공사막(20b)으로 이루어지되, 상기 중공사막(20b)은 세라믹 계열의 폴리아미드 성분으로 이루어진 멤브레인으로 구성된다.Here, the exhaust gas component separation unit 20, as shown in Figure 2, the resin plate tube portion 20a of the EP resin material provided on the branch path 18 and the inside of the resin plate tube portion 20a. It consists of a plurality of hollow fiber membrane 20b disposed along the longitudinal direction, the hollow fiber membrane 20b is composed of a membrane made of a ceramic-based polyamide component.

또한, 상기 중공사막(20b)은 상기 배기경로(12)로부터 상기 흡기경로(16)를 향해 단면적이 점차 줄어드는 형태로 이루어진 단중공사막이다.In addition, the hollow fiber membrane 20b is a single hollow fiber membrane formed in a form in which the cross-sectional area gradually decreases from the exhaust path 12 toward the intake path 16.

그리고, 상기 개폐조절밸브(22)는 상기 흡기경로(16)상에 설치되어 경로의 개폐를 조절하는 제1 개폐조절밸브(22a)와, 상기 분기경로(18)의 배기가스 성분 분리부(20) 후단에 설치되어 경로의 개폐를 조절하는 제2 개폐조절밸브(22b)로 이루어지는 바, 상기 제1 및 제2 개폐조절밸브(22a,22b)의 개폐는 상기 제어 유니트(26)에 의해 이루어짐은 물론이다.In addition, the opening and closing control valve 22 is provided on the intake path 16, the first opening and closing control valve 22a for controlling the opening and closing of the path, and the exhaust gas component separator 20 of the branch path (18). The second opening and closing control valve (22b) is installed at the rear end to control the opening and closing of the path, the opening and closing of the first and second opening and closing control valve (22a, 22b) is made by the control unit 26 Of course.

또한, 상기 부하 검출부(24)는 상기 흡기경로(16)상에 설치되어 흡입공기의 유동량을 검출하는 공기 유동량 검출센서로 이루어진다.In addition, the load detection unit 24 is provided on the intake path 16 is composed of an air flow amount detection sensor for detecting the flow amount of the intake air.

아울러, 상기 제어 유니트(26)는 상기 엔진(10)의 오버런시 상기 제1 개폐조절밸브(22a)를 폐쇄시킴과 더불어 상기 제2 개폐조절밸브(22b)를 개방시키고, 정상 상태에서는 상기 제1 개폐조절밸브(22a)를 개방시키고 상기 제2 개폐조절밸브(22b)를 폐쇄시키도록 되어 있다.In addition, the control unit 26 closes the first opening / closing control valve 22a when the engine 10 is overrun, and opens the second opening / closing control valve 22b. The on-off control valve 22a is opened and the second on-off control valve 22b is closed.

한편, 도면중 미설명 부호 28은 상기 흡기경로(16)중에 설치되어 흡기중 포 함된 이물질을 제거하는 에어 필터이고, 30은 터보 차져이며, 32는 인터쿨러이다.Meanwhile, reference numeral 28 in the drawing is an air filter installed in the intake path 16 to remove foreign matters contained in the intake, 30 is a turbocharger, and 32 is an intercooler.

따라서, 상기 제어 유니트(26)는 엔진(10)의 가동중 상기 부하 검출부(24)를 매개로 오버런을 인식하게 되면, 상기 흡기경로(16)상에 설치된 제1 개폐조절밸브(22a)를 폐쇄시키고, 상기 배기경로(12)로부터 분지된 분기경로(18)상에 설치된 제2 개폐조절밸브(22b)를 개방시키게 된다.Therefore, when the control unit 26 recognizes the overrun via the load detection unit 24 while the engine 10 is operating, the control unit 26 closes the first opening / closing regulating valve 22a provided on the intake path 16. Then, the second on-off control valve 22b provided on the branch path 18 branched from the exhaust path 12 is opened.

이에 따라, 상기 분기경로(18)를 통해 유동되는 배기가스는 상기 배기가스 성분 분리부(20)에 의해 산소 성분과 질소 성분으로 각각 분리되는 바, 분리된 질소 가스는 상기 제2 개폐조절밸브(22b)를 통해 상기 엔진(10)의 흡기측으로 유입되어 연소후 배기경로(12)를 통해 배출되는 배기가스의 성분중 산소의 농도를 낮추게 되고, 이로 인해 상기 디젤매연 촉매여과필터(14)의 재생은 이루어지지 않게 된다.Accordingly, the exhaust gas flowing through the branch path 18 is separated into an oxygen component and a nitrogen component by the exhaust gas component separator 20, and the separated nitrogen gas is separated from the second open / close control valve ( 22b) to lower the concentration of oxygen in the components of the exhaust gas flowing into the intake side of the engine 10 and discharged through the exhaust path 12 after combustion, thereby regenerating the diesel particulate catalyst filter 14 Is not done.

이때, 연소후 배기경로(12)를 통해 배출되는 배기가스중 산소의 농도는 상기 디젤매연 촉매여과필터(14)가 재생에 요구되는 수준 보다 이하로 설정됨은 물론이고, 이는 상기 개폐조절밸브(22)의 개폐에 대한 제어를 통해 달성할 수 있다.At this time, the concentration of oxygen in the exhaust gas discharged through the exhaust path 12 after combustion is set to less than the level required for the diesel particulate catalyst filtration filter 14 for regeneration, which is the on-off control valve 22 Can be achieved through control of the opening and closing of

이 경우, 상기 배기가스 성분 분리부(20)에서는 세라믹 계열의 폴리아미드 성분으로 이루어진 중공사막(20b)에 의해 배기가스중 질소 및 산소 성분을 각각 분리하게 되는 바, 상기 배기가스 성분 분리부(20)의 고압측에서는 질소 성분이 발생하게 되고, 저압측에서는 산소 성분이 대기중으로 방사하게 된다.In this case, the exhaust gas component separator 20 separates nitrogen and oxygen components from the exhaust gas by the hollow fiber membrane 20b made of a ceramic-based polyamide component. On the high pressure side of the N), a nitrogen component is generated, and on the low pressure side, the oxygen component is radiated to the atmosphere.

이는 멤브레인이 가지는 특성중 하나인 분자 단면적의 차이에 따른 투과 및 비투과의 특성으로 기인하는 바, 배기가스중 분자의 단면적이 큰 질소 성분은 멤브레인의 중공사막(20b)을 투과하지 못하고, 분자의 단면적이 상대적으로 작은 산소 성분만이 중공사막(20b)을 투과하여 외부로 배출됨에 따라 기인하는 현상이다.This is due to the characteristics of permeation and non-permeability according to the difference in molecular cross-sectional area, which is one of the characteristics of the membrane. The nitrogen component having a large cross-sectional area of the molecule in the exhaust gas does not penetrate the hollow fiber membrane 20b of the membrane, This relatively small oxygen component is a phenomenon caused by passing through the hollow fiber membrane 20b and discharged to the outside.

이상 설명한 바와 같이 본 발명에 따른 디젤매연 촉매여과필터의 재생 제어장치에 의하면, 엔진(10)의 가동중 오버런의 발생시 배기경로(12)를 통해 배출되는 배기가스중 일부를 흡기경로(16)로 재공급하여 연소후 배출되는 배기가스중 산소 성분을 낮추고, 이로 인해 디젤매연 촉매여과필터(14)에서 매연의 연소에 따른 필터 내부 온도의 급격한 상승을 방지하여 열해에 의한 필터의 손상을 억제할 수 있게 된다.As described above, according to the regeneration control apparatus of the diesel particulate catalyst filtering filter according to the present invention, a part of the exhaust gas discharged through the exhaust path 12 when the overrun occurs during operation of the engine 10 is transferred to the intake path 16. By re-supply, the oxygen content of exhaust gas discharged after combustion is lowered, and thus, the diesel soot catalyst filtration filter 14 prevents a sudden rise in the internal temperature of the filter due to the combustion of soot, thereby preventing damage to the filter due to thermal damage. Will be.

이때 흡기경로(16)로 재공급되는 배기가스는 배기가스 성분 분리부(20)를 통해 산소 및 질소 성분으로 분리되고, 분리된 질소 가스만을 흡기경로(16)를 통해 연소실로 공급하여 연소후 배출되는 배기가스중 포함된 산소 성분을 현저하게 줄일 수 있게 되는 것이다.At this time, the exhaust gas re-supplied to the intake path 16 is separated into oxygen and nitrogen components through the exhaust gas component separator 20, and only the separated nitrogen gas is supplied to the combustion chamber through the intake path 16 to be discharged after combustion. It is possible to significantly reduce the oxygen component contained in the exhaust gas.

Claims (6)

엔진의 배기경로상에 설치된 디젤매연 촉매여과필터와; A diesel particulate catalyst filtration filter installed on an exhaust path of the engine; 상기 배기경로로부터 분기되어 상기 엔진의 흡기경로와 연통되도록 설치된 분기경로; A branch path branched from the exhaust path and installed to communicate with the intake path of the engine; 상기 분기경로상에 설치되어 배기가스를 질소와 산소 성분으로 각각 분리하여 질소 성분만을 상기 흡기경로에 제공하는 배기가스 성분 분리부; An exhaust gas component separator installed on the branch path to separate the exhaust gas into nitrogen and oxygen components to provide only nitrogen components to the intake path; 상기 흡기경로와 상기 분기경로상에 각각 설치되어 흡기와 배기의 유동을 각각 조절하는 개폐조절밸브; Opening and closing control valves respectively provided on the intake path and the branch path to control the flow of intake and exhaust; 상기 엔진의 부하를 검출하는 부하 검출부 및; A load detector for detecting a load of the engine; 상기 부하 검출부로부터 상기 엔진의 오버런 검출시, 상기 개폐조절밸브의 개폐를 각각 조절하여 흡입공기의 산소 농도를 저하시켜 상기 디젤매연 촉매여과필터의 재생을 방지하는 제어 유니트를 포함하여 구성된 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.When the overrun detection of the engine from the load detection unit, it is characterized in that it comprises a control unit for controlling the opening and closing of the opening and closing control valve to reduce the oxygen concentration of the intake air to prevent the regeneration of the diesel particulate catalyst filtration filter Regenerative control device of diesel particulate catalyst filtration filter. 청구항 1에 있어서, The method according to claim 1, 상기 배기가스 성분 분리부는 상기 분기경로상에 설치된 EP수지의 수지판관부와, 상기 수지판관부의 내부에 길이방향을 따라 배치된 다수의 중공사막으로 이루어지되, 상기 중공사막은 세라믹 계열의 폴리아미드 성분으로 이루어진 멤브레인 인 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.The exhaust gas component separator comprises a resin plate tube portion of an EP resin provided on the branch path, and a plurality of hollow fiber membranes disposed along a length direction in the resin plate tube portion, wherein the hollow fiber membrane is a ceramic polyamide component. Regeneration control apparatus for diesel particulate catalyst filtration filter, characterized in that consisting of a membrane. 청구항 2에 있어서, The method according to claim 2, 상기 중공사막은 상기 배기경로로부터 흡기경로를 향해 단면적이 점차 줄어드는 단중공사막인 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.The hollow fiber membrane is a regeneration control apparatus for a diesel particulate catalyst filtering filter, characterized in that the mono-hollow membrane is gradually reduced in cross-sectional area from the exhaust path toward the intake path. 청구항 1에 있어서, The method according to claim 1, 상기 개폐조절밸브는 상기 흡기경로상에 설치되어 경로의 개폐를 조절하는 제1 개폐조절밸브와, 상기 분기경로의 상기 배기가스 성분 분리부 후단에 설치되어 경로의 개폐를 조절하는 제2 개폐조절밸브로 이루어진 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.The opening and closing control valve is installed on the intake path to control the opening and closing of the path, and the second opening and closing control valve is installed at the rear end of the exhaust gas component separation unit of the branch path to control the opening and closing of the path. Regeneration control device for diesel particulate catalyst filtration filter, characterized in that consisting of. 청구항 1에 있어서, The method according to claim 1, 상기 부하 검출부는 상기 흡기경로상에 설치되어 흡입공기의 유동량을 검출하는 공기 유동량 검출센서로 이루어진 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.And the load detector comprises an air flow amount detection sensor installed on the intake path to detect the flow amount of the intake air. 청구항 1에 있어서, The method according to claim 1, 상기 제어 유니트는 상기 엔진의 오버런시 상기 제1 개폐조절밸브를 폐쇄시킴과 더불어 상기 제2 개폐조절밸브를 개방시키고, 상기 엔진의 정상 상태에서는 상기 제1 개폐조절밸브를 개방시킴과 더불어 상기 제2 개폐조절밸브를 폐쇄시키는 것을 특징으로 하는 디젤매연 촉매여과필터의 재생 제어장치.The control unit closes the first open / close control valve when the engine is overrun, opens the second open / close control valve, and opens the first open / close control valve in the normal state of the engine. Regeneration control device for diesel particulate catalyst filtration filter characterized in that for closing the on-off control valve.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130028330A (en) * 2011-09-09 2013-03-19 현대자동차주식회사 System for purifying exhaust gas and method for controlling the same
KR101399993B1 (en) * 2011-11-24 2014-05-30 삼성중공업 주식회사 Apparatus and Method For Exhaust Gas Purification of Marine Engine
US9732656B2 (en) 2015-07-23 2017-08-15 Hyundai Motor Company Method for regenerating exhaust gas filter for vehicles and system therefor
KR20190069010A (en) 2017-12-11 2019-06-19 현대자동차주식회사 Method for controlling regeneration gasoline particulate filter of hybrid vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003027926A (en) * 2001-07-17 2003-01-29 Toyota Motor Corp Exhaust emission control device of internal combustion engine using oxygen enriching system, and its method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130028330A (en) * 2011-09-09 2013-03-19 현대자동차주식회사 System for purifying exhaust gas and method for controlling the same
KR101399993B1 (en) * 2011-11-24 2014-05-30 삼성중공업 주식회사 Apparatus and Method For Exhaust Gas Purification of Marine Engine
US9732656B2 (en) 2015-07-23 2017-08-15 Hyundai Motor Company Method for regenerating exhaust gas filter for vehicles and system therefor
KR20190069010A (en) 2017-12-11 2019-06-19 현대자동차주식회사 Method for controlling regeneration gasoline particulate filter of hybrid vehicle

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