KR101048126B1 - Exhaust gas purification device - Google Patents

Exhaust gas purification device Download PDF

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Publication number
KR101048126B1
KR101048126B1 KR1020080097219A KR20080097219A KR101048126B1 KR 101048126 B1 KR101048126 B1 KR 101048126B1 KR 1020080097219 A KR1020080097219 A KR 1020080097219A KR 20080097219 A KR20080097219 A KR 20080097219A KR 101048126 B1 KR101048126 B1 KR 101048126B1
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South Korea
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filter
exhaust gas
soot
channel
inlet
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KR1020080097219A
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Korean (ko)
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KR20100037885A (en
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최성무
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현대자동차주식회사
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Priority to KR1020080097219A priority Critical patent/KR101048126B1/en
Priority to US12/512,762 priority patent/US20100083642A1/en
Priority to JP2009184863A priority patent/JP2010084758A/en
Priority to DE102009036850A priority patent/DE102009036850A1/en
Priority to CN200910163384.8A priority patent/CN101713314B/en
Publication of KR20100037885A publication Critical patent/KR20100037885A/en
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Publication of KR101048126B1 publication Critical patent/KR101048126B1/en

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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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N3/2066—Selective catalytic reduction [SCR]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

본 발명의 실시예에 따라, 연소실에서 배기된 배기가스가 지나는 입구와 출구가 각각 형성된 복수 개의 채널이 형성된 필터를 포함하여 배기가스에 포함된 매연(soot)를 포집하는 배기가스 정화장치는, 상기 필터에 형성된 상기 채널들 중 적어도 하나의 입구를 막도록 형성되는 제1마개 및 상기 채널들 중 적어도 하나의 출구를 막도록 형성되는 제2마개를 포함하고, 상기 제1마개는 상기 채널의 단부 전면에서 상기 입구에서 상기 출구 방향으로 소정거리만큼 삽입된 것을 특징으로 한다.According to an embodiment of the present invention, the exhaust gas purification apparatus for collecting the soot (soot) contained in the exhaust gas including a filter having a plurality of channels each formed inlet and outlet through which the exhaust gas exhausted from the combustion chamber passes, the A first plug formed to block an inlet of at least one of the channels formed in the filter and a second plug formed to block an outlet of at least one of the channels, the first plug being an end front of the channel; In the inlet is characterized in that it is inserted a predetermined distance in the exit direction.

따라서, 제1마개가 입구에서 출구 방향으로 설정된 깊이만큼 삽입되어 설치됨으로써 필터의 OFA가 늘어나고, 입자상 물질의 제거효율(재생효율)이 향상되며, 필터의 전단 막힘 현상이 방지될 뿐만 아니라, 배압이 저감되어 엔진의 출력향상에 도움을 준다.Therefore, the OFA of the filter is increased by inserting and installing the first plug by the depth set from the inlet to the outlet direction, the removal efficiency (regeneration efficiency) of the particulate matter is improved, and the shear clogging phenomenon of the filter is prevented, and the back pressure is also increased. Reduced to help improve engine power.

CPF, DPF, DOC, 채널, 마개, 매연, soot, 재생 CPF, DPF, DOC, Channel, Spigot, Soot, Soot, Play

Description

배기가스 정화장치{PURIFICATION DEVICE OF EXHAUST GAS}Exhaust gas purification device {PURIFICATION DEVICE OF EXHAUST GAS}

본 발명은 차량의 배기가스 정화장치에 관한 것으로서, 보다 상세하게는 설정된 온도에서 재생될 때 재생 효율이 향상되어 막힘 현상이 줄어든 배기가스 정화장치에 관한 것이다.The present invention relates to an exhaust gas purification device for a vehicle, and more particularly, to an exhaust gas purification device in which a regeneration efficiency is improved when a regeneration at a set temperature is reduced, thereby reducing clogging.

배기 가스 정화장치에서 촉매 필터에는, 배기 가스 흐름 방향으로 여러 개의 채널들이 형성되고, 이러한 복수 개의 채널을 통과하면서 배기가스에 포함된 입장상 물질들이 포집된다.In the exhaust gas purifier, a plurality of channels are formed in the catalyst filter in the exhaust gas flow direction, and the entrant substances contained in the exhaust gas are collected while passing through the plurality of channels.

일반적으로 필터에 형성된 채널들 중 적어도 하나는 입구가 패쇄되고 출구가 개방되며, 상기 채널들 중 적어도 하나는 입구가 개방되고, 출구가 폐쇄되며, 입구 또는 출구의 폐쇄된 부분이 교대로 배치되는 구조를 갖는다.In general, at least one of the channels formed in the filter has an inlet closed and an outlet opened, at least one of the channels has an inlet open, an outlet closed, and a closed portion of the inlet or outlet is alternately arranged. Has

한편, 촉매 중에서 촉매 여과필터(CPF: Catalyst Particulate Filter)가 적용되는데, 연소 시 발생하는 그으름(soot)과 같은 입자상 물질들(PM: Particular Matters)을 포집한다.Meanwhile, a catalyst filtration filter (CPF: Catalyst Particulate Filter) is applied among the catalysts and collects particulate matter (PM) such as soot generated during combustion.

최근에는, 여러 가지 배기가스 규제를 만족시키기 위해서 디젤 매연여과필터(DPF: Diesel Particulate Filter)에 디젤 산화 촉매(DOC: Diesel Oxidation Catalyst) 기능을 추가한 복합 형태의 촉매 여과필터(CPF: Catalyst Particulate Filter)가 적용되고 있다.Recently, to meet various emission regulations, a composite catalyst filter (CPF) that adds a diesel oxidation catalyst (DOC) to a diesel particulate filter (DPF) ) Is being applied.

도 5는 일반적인 배기가스 정화장치에 구비된 필터의 측단면도이다.5 is a side cross-sectional view of a filter provided in a general exhaust gas purification device.

도시한 바와 같이, 필터에는 제1,2,3필터월(10)에 형성되고, 이들 사이에 채널들(19, 18)이 형성되며, 한 채널(19)의 입구측에는 제1마개(16)가 배치되고, 다른 채널(18)의 출구측에 제2마개(14)가 배치된다.As shown, the filter is formed in the first, second and third filter walls 10, and channels 19 and 18 are formed therebetween, and the first plug 16 is provided at the inlet side of one channel 19. Is arranged, and the second plug 14 is arranged on the outlet side of the other channel 18.

배기가스가 상기 필터를 통과하면서, 전단부의 전면과 내측면으로 입자상 물질들이 부착되고, 전면에 포집된 입자상 물질의 덩어리(12)들이 상기 제2채널(18) 입구측으로 성장하여 상기 제2채널(18)의 입구를 막는 막힘 현상이 발생할 수 있다.As the exhaust gas passes through the filter, particulate matter is attached to the front and inner surfaces of the front end portion, and the agglomerates 12 of particulate matter collected on the front surface grow to the inlet side of the second channel 18 so that the second channel ( A blockage may occur that blocks the inlet of 18).

따라서, 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 창출된 것으로, 본 발명의 목적은 촉매 여과필터의 막힘 현상이 저감된 배기가스 정화장치를 제공하는 것이다.Accordingly, the present invention was created to solve the above problems, and an object of the present invention is to provide an exhaust gas purifying apparatus in which clogging of the catalyst filtration filter is reduced.

이러한 목적을 달성하기 위해, 연소실에서 배기된 배기가스가 지나는 입구와 출구가 각각 형성된 복수 개의 채널이 형성된 필터를 포함하여 배기가스에 포함된 매연(soot)를 포집하는 배기가스 정화장치는, 상기 필터에 형성된 상기 채널들 중 적어도 하나의 입구를 막도록 형성되는 제1마개 및 상기 채널들 중 적어도 하나의 출구를 막도록 형성되는 제2마개를 포함하고, 상기 제1마개는 상기 채널의 단부 전면에서 상기 입구에서 상기 출구 방향으로 소정거리만큼 삽입된 것을 특징으로 한다.In order to achieve this object, the exhaust gas purification apparatus for collecting the soot (soot) contained in the exhaust gas including a filter formed with a plurality of channels each formed inlet and outlet through which the exhaust gas exhausted from the combustion chamber passes, the filter A first stopper formed to block an inlet of at least one of the channels formed in the second stop; and a second stopper formed to block an outlet of at least one of the channels; Characterized in that it is inserted by a predetermined distance in the direction of the exit from the inlet.

상기 필터는, 디젤산화촉매(DOC: Diesel Oxidation Catalyst) 또는 매연여과필터(DPF: Diesel Particulate Filter)일 수 있고, 촉매여과필터(CPF: Catalyst Particulate Filter)일 수 있다.The filter may be a Diesel Oxidation Catalyst (DOC) or a Diesel Particulate Filter (DPF) or a Catalyst Particulate Filter (CPF).

상기 필터의 후단부로 선택적 환원 촉매(SCR: Selective Catalyst Reduction)가 배치되고, 상기 필터의 온도를 높인 재생 모드에서, 포집된 매연을 상기 필터에 형성된 촉매 금속 성분에 의해서 제거될 수 있다.Selective Catalyst Reduction (SCR) is disposed at the rear end of the filter, and in the regeneration mode in which the temperature of the filter is increased, the collected soot may be removed by the catalytic metal component formed in the filter.

상기 필터에 포집된 매연(soot)이 제거되는 상기 재생 모드에서, 상기 필터 의 전단부에서 후단부로 갈수록 온도가 상승하도록 분포되고 상기 제1마개는 상기 매연이 제거되는 설정된 온도가 형성된 위치에 배치되고, 상기 제1마개는 상기 채널의 앞쪽 단부면에서 상기 입구에서 상기 출구 방향으로 1.5 inch 이상 삽입되는 것을 특징으로 할 수 있다.In the regeneration mode in which the soot trapped by the filter is removed, the temperature is increased from the front end to the rear end of the filter so that the temperature is increased and the first stopper is disposed at a position where a set temperature at which the soot is removed is formed. The first plug may be inserted in the front end surface of the channel at least 1.5 inches from the inlet to the outlet direction.

아울러, 상기 제1마개가 삽입된 길이만큼 상기 필터는 길이방향으로 연장되어 제작되는 것이 바람직하다.In addition, the filter is preferably made to extend in the longitudinal direction by the length of the first plug is inserted.

상술한 바와 같이 본 발명에 따른 배기가스 정화장치에 의하면, 제1마개가 입구에서 출구 방향으로 설정된 깊이만큼 삽입되어 설치됨으로써 필터의 OFA가 늘어난다.As described above, according to the exhaust gas purifying apparatus according to the present invention, the OFA of the filter is increased by inserting and installing the first plug by a depth set in the inlet to outlet direction.

입자상 물질의 제거효율(재생효율)이 향상되어, 필터의 전단 막힘 현상이 방지되며, 배압이 저감되어 엔진의 출력향상에 도움을 준다.The removal efficiency (regeneration efficiency) of particulate matter is improved to prevent the filter from clogging, and the back pressure is reduced to help improve the engine output.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 배기가스 정화장치의 개략적인 측면도이다.1 is a schematic side view of an exhaust gas purifying apparatus according to an embodiment of the present invention.

도 1을 참조하면, 배기가스 정화장치는 엔진에 인접한 촉매여과필터(115, CPF: Catalyst Particulate Filter), 상기 촉매여과필터(115) 후단에 장착된 선택적 환원 촉매(120, SCR: Selective Catalyst Reduction system)를 포함한다.Referring to FIG. 1, the exhaust gas purifying apparatus includes a catalyst filtration filter 115 (CPF) adjacent to an engine and a selective catalytic reduction system (SCR) mounted at a rear end of the catalyst filtration filter 115. ).

상기 촉매여과필터(115)는 디젤산화촉매(DOC: Diesel Oxidation Catalyst, 100)와 상기 매연여과필터(DPF: Diesel Particulate Filter, 110)가 순서대로 배치된 구조 또는 상기 디젤산화촉매(100)와 상기 매연여과필터(110)가 일체로 형성된 구조를 가질 수 있다. The catalyst filtration filter 115 has a structure in which a Diesel Oxidation Catalyst (DOC) 100 and the Diesel Particulate Filter (DPF) 110 are arranged in this order or the diesel oxidation catalyst 100 and the diesel oxidation catalyst 100. The soot filtration filter 110 may have a structure formed integrally.

본 발명의 실시예에서, 상기 촉매여과필터(115)는 상기 디젤산화촉매(100)로 만 구성될 수 있고, 또는 상기 매연여과필터(110)로 만으로 구성될 수 있음은 당연하다.In the embodiment of the present invention, the catalyst filtration filter 115 may be composed of only the diesel oxidation catalyst 100, or may be composed of only the soot filtration filter 110 is natural.

도 2는 본 발명의 실시예에 따른 배기가스 정화장치의 온도분포를 도시한 그래프 및 배기가스 정화장치의 측면도이다.2 is a graph showing a temperature distribution of the exhaust gas purification apparatus according to an embodiment of the present invention and a side view of the exhaust gas purification apparatus.

상기 촉매여과필터(115)에 포집된 입자상 물질을 태워서 제거하기 위해서 상기 촉매여과필터(115)를 설정된 온도로 상승시키게 된다.The catalyst filtration filter 115 is raised to a set temperature in order to burn and remove the particulate matter collected in the catalyst filtration filter 115.

도 2를 참조하면, 운전조건 A에서 상기 필터(115)의 전면부 온도는 250도 이하이고, 후단부로 갈수록 온도가 상승하다 하강한다. 마찬가지로, 운전조건 B, C에서 상기 필터(115)의 전면부 온도는 400도 이하이고, 후단부로 갈수록 온도가 상승하다 하강하는 구조를 갖는다.Referring to FIG. 2, under operating condition A, the temperature of the front part of the filter 115 is 250 degrees or less, and the temperature increases and decreases toward the rear end. Similarly, under operating conditions B and C, the temperature of the front part of the filter 115 is 400 degrees or less, and the temperature increases and decreases toward the rear end.

상기 촉매여과필터(115)를 600도 이상으로 높이기 위해서 강제 재생 운전 조건에서는 연료를 추가적으로 분사하여 상기 촉매여과필터(115)의 전면부는 약 450도이고, 1inch 부분에서는 약 600도, 1.5inch 부분에서는 약 650도의 온도를 나타낸다.In order to increase the catalyst filtration filter 115 to 600 degrees or more, fuel is additionally injected in the forced regeneration operation condition so that the front portion of the catalyst filtration filter 115 is about 450 degrees, at about 600 degrees at 1 inch and at about 1.5 inches. The temperature is about 650 degrees.

상기 촉매여과필터에 포집된 입자상 물질은 높은 온도(약 600도 이상의 온도)에서 용이하게 제거되는 특징을 가지고 있으며, 상기와 같은 온도 분포로 인하 여 상기 촉매여과필터(115)에 포집된 입자상 물질 중에서 앞 부분에 포집된 입자상 물질이 잘 제거(재생)되지 못하는 문제점을 가지고 있다. Particulate matter trapped in the catalyst filter is characterized in that it is easily removed at a high temperature (temperature of about 600 degrees or more), and due to the temperature distribution as described above, among the particulate matter trapped in the catalyst filter (115) There is a problem that the particulate matter collected in the front portion is not easily removed (regenerated).

그러나, 본 발명의 실시예에서는 상기 촉매여과필터(115)의 구조를 개선하여 재생 효율을 향상시킨다. 상기 촉매여과필터의 상세한 구조에 관해서는, 도 3을 참조하여 상세하게 설명한다.However, in the embodiment of the present invention, the regeneration efficiency is improved by improving the structure of the catalyst filtration filter 115. The detailed structure of the said catalyst filtration filter is demonstrated in detail with reference to FIG.

도 3은 본 발명의 실시예에 따른 배기가스 정화장치에 구비된 필터의 측단면도이다.3 is a side cross-sectional view of a filter provided in the exhaust gas purifying apparatus according to the embodiment of the present invention.

도 3을 참조하면, 상기 촉매여과필터(115)는 적어도 제1,2채널(330, 340)을 형성하도록 제1,2,3월(300, 302, 304)이 배치되고, 상기 제2채널(340)의 입구측(좌측)에서 출구측(우측)으로 배기가스가 흐르는 구조를 갖고 있다.Referring to FIG. 3, the catalyst filtration filter 115 includes first, second, and third marches 300, 302, and 304 arranged to form at least first and second channels 330 and 340, and the second channel. The exhaust gas flows from the inlet side (left side) to the outlet side (right side) of the 340.

아울러, 상기 제1채널(330)의 입구는 제1마개(310)에 의해서 폐쇄되고, 상기 제2채널(340)의 출구는 제2마개(320)에 의해서 폐쇄된다. 따라서, 상기 제2채널(340)의 입구를 따라서 배기가스가 유입되고, 가운데 상기 제2월(300, 302)을 통과하여 상기 제1채널(330)의 출구로 배기가스가 이동한다.In addition, the inlet of the first channel 330 is closed by the first plug 310, and the outlet of the second channel 340 is closed by the second plug 320. Accordingly, the exhaust gas flows along the inlet of the second channel 340, and the exhaust gas moves through the second walls 300 and 302 to the outlet of the first channel 330.

상기 촉매여과필터(115)에 구비된 상기 제1마개(310)는 입구의 앞면에서 제1거리(d1)만큼 삽입되어 배치된다. 아울러, 본 발명의 실시예에서 상기 촉매여과필터(115)의 길이가 상기 제1길이(d1)만큼 연장되어 형성되는 것이 바람직하다.The first plug 310 provided in the catalyst filtration filter 115 is inserted and disposed by a first distance d1 from the front surface of the inlet. In addition, in the embodiment of the present invention, it is preferable that the length of the catalyst filtration filter 115 is formed to extend by the first length d1.

상기 제1마개(310)가 상기 제1채널(330)의 길이 방향으로 삽입되어 배치됨으로써, 상기 제1마개(310)가 배치된 상기 제1채널(330) 전단부에 홈(345)이 형성되고, 상기 홈(345) 내측으로 입자상 물질(325)들이 포집된다.As the first stopper 310 is inserted into and disposed in the longitudinal direction of the first channel 330, a groove 345 is formed in a front end portion of the first channel 330 in which the first stopper 310 is disposed. The particulate matter 325 is collected inside the groove 345.

상기 홈(345) 내측으로 입자상 물질(325)들이 포집되기 때문에, 입자상 물질(325)의 덩어리들이 상기 제2채널(340)의 입구측로 성장하여 이를 막는(blocking) 문제점을 해소할 수 있다.Since the particulate matter 325 is collected inside the groove 345, agglomeration of particulate matter 325 may grow to the inlet side of the second channel 340 to block the blocking problem.

도 4는 본 발명의 실시예에 따른 배기가스 정화장치에 구비된 필터의 재생시 온도를 나타내는 표이다.4 is a table showing the temperature during regeneration of the filter provided in the exhaust gas purifying apparatus according to the embodiment of the present invention.

도 4를 참조하면, 상기 촉매여과필터(115)의 전단부의 온도는 섭씨 450도이고, 1inch후단은 600도이며, 1.5inch 후단은 650도이므로 입자상 물질(soot)의 제거율이 전단부에서는 낮고, 1,5inch 후단에서 가장 높은 특징을 갖고 있다.Referring to FIG. 4, the temperature of the front end of the catalyst filtration filter 115 is 450 degrees Celsius, the first end is 600 degrees, and the 1.5 inch rear end is 650 degrees, so the removal rate of soot is low at the front end, It has the highest characteristic at the 1,5 inch rear end.

따라서, 전술한 바와 같이 전단부의 입자상 물질의 제거율(재생율)이 낮아서OFA(Open Frontal Area)를 줄이는 문제점을 야기하지만, 상기 제1마개(310)를 1.5inch 삽입하여 배치함으로써 OFA가 줄어드는 문제점을 해소할 수 있다.Therefore, as described above, the removal rate (regeneration rate) of the particulate matter at the front end is low, which causes a problem of reducing the OFA (Open Frontal Area), but the problem that OFA is reduced by inserting the first plug 310 by 1.5 inches is eliminated. can do.

상기 필터(115)를 재생하기 위해서, 상기 필터(115)에는 촉매 금속 성분이 워시코트 등으로 코팅되고, 상기 촉매 금속 성분은 상기 필터(115)의 온도를 높인 재생 모드에서, 포집된 매연 및 입자상 물질을 효과적으로 제거한다.In order to regenerate the filter 115, the filter 115 is coated with a catalyst metal component with a washcoat or the like, and the catalyst metal component is collected in the collected soot and particulate form in a regeneration mode in which the temperature of the filter 115 is increased. Effectively remove the material.

본 발명의 실시예에서, 촉매 여과 필터의 채널의 단면 형상은 일반적으로 정사각형, 육각형, 원형 및 삼각형 등 여러 가지의 형태를 가질 수 있음은 당연하다. In the embodiment of the present invention, it is obvious that the cross-sectional shape of the channel of the catalyst filtration filter may generally have various shapes such as square, hexagon, circle and triangle.

따라서, 본 발명의 실시예에서, 상기 촉매 여과 필터의 채널이 제1,2,3웰(300, 302, 304)로 형성된다는 것은 하나의 예에 불과하면, 여러 가지 형태로 변형 실시될 수 있다.Therefore, in the embodiment of the present invention, it is only one example that the channel of the catalyst filtration filter is formed of the first, second, third wells 300, 302, 304 may be modified in various forms. .

본 발명의 실시예에 따른, 촉매 여과 필터(CPF: Catalyzed Particulate Filter)의 채널 일부는 한쪽 방향으로 개방되어 있고, 다른 일부는 반대 쪽 방향으로 개방되어 있다.According to an embodiment of the present invention, a part of the channel of the Catalyzed Particulate Filter (CPF) is open in one direction and the other part is open in the opposite direction.

또한, 채널의 입출구는 교대로 플러그(마개)에 의해서 폐쇄되는 구조로 되어 있고, 전체 단면은 체크 패턴 형태를 갖고 있으며, 셀플레이트(셀웰: cell wall)는 배기가스가 투과하는 특징을 가지고 있다.In addition, the inlet and the outlet of the channel are alternately closed by plugs, the entire cross-section has a check pattern shape, and the cell plate (cell wall) has the characteristic of exhaust gas permeation.

따라서, 입자상 물질(PM: Particular Matters)들이 채널 내부 셀웰에 포집되고, 유해한 배기가스의 일부는 내부 표면에 코팅된 촉매에 의해서 산화/환원되어 무해한 물질로 전환되며, 나머지 가스는 채널 후단으로 이동한다.Therefore, particulate matter (PM) is collected in the cellwell inside the channel, and some of the harmful exhaust gas is oxidized / reduced by a catalyst coated on the inner surface and converted into a harmless material, and the remaining gas moves to the rear of the channel. .

한편, 채널 내부에 포집된 입자상 물질(그으름: soot)이 증가하면 배기가스 저항이 증가한다. 이러한 문제점을 해결하기 위해서 채널에 포집된 입자상 물질들은 높은 온도에서 태워 제거된다.On the other hand, when particulate matter (soot) trapped inside the channel increases, the exhaust gas resistance increases. In order to solve this problem, particulate matter trapped in the channel is removed by burning at a high temperature.

전술한 바와 같이, 촉매 여과 필터의 채널은 벌집형태(honey comb type)가 많고, 설계사양에 따라서 여러 가지로 변형될 수 있다.As described above, the channel of the catalyst filtration filter has many honey comb types, and may be variously modified according to design specifications.

이상으로 본 발명에 관한 바람직한 실시예를 설명하였으나, 본 발명은 상기 실시예에 한정되지 아니하며, 본 발명의 실시예로부터 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의한 용이하게 변경되어 균등하다고 인정되는 범위의 모든 변경을 포함한다. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and easily changed and equalized by those skilled in the art from the embodiments of the present invention. It includes all changes to the extent deemed acceptable.

도 1은 본 발명의 실시예에 따른 배기가스 정화장치의 개략적인 측면도이다.1 is a schematic side view of an exhaust gas purifying apparatus according to an embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 배기가스 정화장치의 온도분포를 도시한 그래프 및 배기가스 정화장치의 측면도이다.2 is a graph showing a temperature distribution of the exhaust gas purification apparatus according to an embodiment of the present invention and a side view of the exhaust gas purification apparatus.

도 3은 본 발명의 실시예에 따른 배기가스 정화장치에 구비된 필터의 측단면도이다.3 is a side cross-sectional view of a filter provided in the exhaust gas purifying apparatus according to the embodiment of the present invention.

도 4는 본 발명의 실시예에 따른 배기가스 정화장치에 구비된 필터의 재생시 온도를 나타내는 표이다.4 is a table showing the temperature during regeneration of the filter provided in the exhaust gas purifying apparatus according to the embodiment of the present invention.

도 5는 일반적인 배기가스 정화장치에 구비된 필터의 측단면도이다.5 is a side cross-sectional view of a filter provided in a general exhaust gas purification device.

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

100: 디젤 산화 촉매(DOC)100: diesel oxidation catalyst (DOC)

110: 매연 여과장치(DPF)110: soot filtration device (DPF)

115: 촉매여과필터(CPF)115: catalytic filtration (CPF)

120: 선택적 촉매(SCR)120: selective catalyst (SCR)

300, 302, 304: 제1,2,3월300, 302, 304: January, February, March

330, 340: 제1,2채널330, 340: first and second channel

310, 320: 제1,2마개310, 320: first and second stopper

325: 입자상물질(PM: Particular Matter)325: Particular Matter (PM)

Claims (8)

연소실에서 배기된 배기가스가 지나도록 복수 개의 채널들이 형성된 필터를 포함하여 배기가스에 포함된 매연(soot)를 포집하는 배기가스 정화장치에 있어서,In the exhaust gas purification apparatus for collecting the soot (soot) contained in the exhaust gas including a filter formed with a plurality of channels to pass the exhaust gas exhausted from the combustion chamber, 상기 채널들 중 제1채널의 입구를 막도록 형성되는 제1마개; 및A first stopper formed to block an inlet of a first channel of the channels; And 상기 제1채널과 인접한 상기 제2채널의 출구를 막도록 형성되는 제2마개; 를 포함하고,A second stopper formed to block an outlet of the second channel adjacent to the first channel; Including, 상기 제1마개는 상기 채널의 상기 입구에서 상기 출구 방향으로 소정거리만큼 삽입된 것을 특징으로 하는 배기가스 정화장치.And the first plug is inserted into the outlet from the inlet of the channel by a predetermined distance. 제1 항에 있어서,The method according to claim 1, 상기 필터는,The filter, 디젤산화촉매(DOC: Diesel Oxidation Catalyst) 또는 매연여과필터(DPF: Diesel Particulate Filter)인 것을 특징으로 하는 배기가스 정화장치.Exhaust gas purification apparatus, characterized in that the diesel oxidation catalyst (DOC: Diesel Oxidation Catalyst) or a diesel particulate filter (DPF). 제1 항에 있어서,The method according to claim 1, 상기 필터는,The filter, 촉매여과필터(CPF: Catalyst Particulate Filter)인 것을 특징으로 하는 배기가스 정화장치.Exhaust gas purification apparatus, characterized in that the catalyst filter (CPF: Catalyst Particulate Filter). 제2 항 또는 제3 항에 있어서,The method according to claim 2 or 3, 상기 필터의 후단부로 선택적 환원 촉매(SCR: Selective Catalyst Reduction)가 배치되는 배기가스 정화장치.Exhaust gas purification apparatus is disposed in the rear end of the filter, Selective Catalyst Reduction (SCR). 제1 항에 있어서,The method according to claim 1, 상기 필터의 온도를 높인 재생 모드에서, 포집된 매연이 연소되어 제거되는 배기가스 정화장치.In the regeneration mode in which the temperature of the filter is increased, the collected soot is burned and removed. 제1 항에 있어서,The method according to claim 1, 상기 필터에 포집된 매연(soot)이 연소되어 제거되는 재생 모드에서, In the regeneration mode in which the soot trapped in the filter is burned and removed, 상기 제1마개는 상기 매연이 제거되는 설정된 온도가 형성되는 위치에 배치되는 배기가스 정화장치.And the first stopper is disposed at a position at which a set temperature at which the soot is removed is formed. 제6 항에 있어서,The method according to claim 6, 상기 제1마개는 상기 채널의 앞쪽 단부면에서 상기 입구에서 상기 출구 방향으로 1 inch 이상 삽입되는 것을 특징으로 하는 배기가스 정화장치.And the first plug is inserted at least 1 inch from the inlet to the outlet at the front end face of the channel. 제1 항에 있어서,The method according to claim 1, 상기 제1마개가 삽입된 길이만큼 상기 필터는 길이방향으로 연장되어 제작되는 것을 특징으로 하는 배기가스 정화장치.Exhaust gas purification device, characterized in that the filter is made to extend in the longitudinal direction by the length of the first plug is inserted.
KR1020080097219A 2008-10-02 2008-10-02 Exhaust gas purification device KR101048126B1 (en)

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KR1020080097219A KR101048126B1 (en) 2008-10-02 2008-10-02 Exhaust gas purification device
US12/512,762 US20100083642A1 (en) 2008-10-02 2009-07-30 Exhaust gas purification device, manufacturing method thereof, and manufacturing device thereof
JP2009184863A JP2010084758A (en) 2008-10-02 2009-08-07 Exhaust gas purification device, its manufacturing method, and its manufacturing equipment
DE102009036850A DE102009036850A1 (en) 2008-10-02 2009-08-10 Exhaust gas purification device, manufacturing method for this and manufacturing device for this
CN200910163384.8A CN101713314B (en) 2008-10-02 2009-08-17 Method for forming tampon and apparatus for manufacturing exhaust gas purification device

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Publication number Priority date Publication date Assignee Title
JP2003504547A (en) 1999-07-12 2003-02-04 パーキンズ エンジンズ カンパニー リミテッド Automatic selective regeneration type particulate filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003504547A (en) 1999-07-12 2003-02-04 パーキンズ エンジンズ カンパニー リミテッド Automatic selective regeneration type particulate filter

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