KR20020058812A - Exhausted gas recirculation apparatus - Google Patents

Exhausted gas recirculation apparatus Download PDF

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Publication number
KR20020058812A
KR20020058812A KR1020000086942A KR20000086942A KR20020058812A KR 20020058812 A KR20020058812 A KR 20020058812A KR 1020000086942 A KR1020000086942 A KR 1020000086942A KR 20000086942 A KR20000086942 A KR 20000086942A KR 20020058812 A KR20020058812 A KR 20020058812A
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South Korea
Prior art keywords
exhaust gas
manifold
exhaust
gas recirculation
flow paths
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KR1020000086942A
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Korean (ko)
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정치영
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이계안
현대자동차주식회사
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Priority to KR1020000086942A priority Critical patent/KR20020058812A/en
Publication of KR20020058812A publication Critical patent/KR20020058812A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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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)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PURPOSE: An Exhausted Gas Recirculation(EGR) device is provided to reduce NOx and particulate matter by installing a Diesel Particulate Filter(DPF) for collecting noxious matter. CONSTITUTION: An intake manifold and exhaust manifold are installed in one side of an engine(10). An Exhausted Gas Recirculation(EGR) pipe(13) is installed between the intake manifold and the exhaust manifold so that gas exhausted from the exhaust manifold is again introduced into the intake manifold. A Diesel Particulate Filter(DPF)(20) is installed on the EGR pipe(13), and collects and burns particulate matter in the recirculated exhaust gas before the recirculated gas exhausted from the exhaust manifold is introduced into the intake manifold.

Description

배기가스 재순환 장치{EXHAUSTED GAS RECIRCULATION APPARATUS}EXHAUSTED GAS RECIRCULATION APPARATUS}

본 발명은 배기가스 재순환(EGR; Exhausted Gas Recirculation) 장치에 관한 것으로서, 보다 상세하게는 배기가스 내의 유해물질을 포집할 수 있는 장치를 채용하여 질소산화물(N0x)과 입자상 물질(PM 또는 Particulate Matter)을 동시에 저감시킬 수 있도록 하여 성능이 향상되도록 그 구조가 개선된 배기가스 재순환 장치에 관한 것이다.The present invention relates to an Exhausted Gas Recirculation (EGR) device, and more particularly, employs a device capable of capturing harmful substances in the exhaust gas. The present invention relates to an exhaust gas recirculation apparatus of which the structure is improved to improve the performance by simultaneously reducing the pressure.

배기가스 재순환 장치는, 배기가스 중의 질소산화물(이하, NOx라 함)을 감소시키는 수단으로서 배기가스의 일부를 흡기 계통에 다시 돌려보내어 혼합기가 연소할 때 최고온도를 낮추어 NOx의 생성량을 적게 한다. 흡기관에 되돌려 보내지는 배기가스의 조절은 스로틀 밸브 부근의 부압이나 배기관 내의 배기압에 의해 제어되는 컨트롤 밸브(또는 이지알(EGR)밸브)에 의해 이루어진다. 보통 이를 약칭해서 EGR이라고 한다.The exhaust gas recirculation apparatus sends a portion of the exhaust gas back to the intake system as a means of reducing nitrogen oxides (hereinafter referred to as NOx) in the exhaust gas, lowering the maximum temperature when the mixer burns, and reducing the amount of NOx produced. The exhaust gas returned to the intake pipe is controlled by a control valve (or ERG valve) controlled by the negative pressure near the throttle valve or the exhaust pressure in the exhaust pipe. Usually abbreviated as EGR.

이와 같이 종래의 배기가스 재순환 장치의 경우, 배기가스의 직접 흡기 배급으로 NOx의 저감은 이루어지지만, 입자상 물질이 증가된다. 이러한 문제점을 극복하기 위해 설치된 EGR 쿨러(cooler)의 경우 입자상 물질의 발생이 상대적으로 감소하지만, NOx 저감 효율이 감소하는 문제점이 있다.As described above, in the conventional exhaust gas recirculation apparatus, although NOx is reduced by direct intake distribution of exhaust gas, particulate matter is increased. In the case of the EGR cooler installed to overcome this problem, the generation of particulate matter is relatively reduced, but there is a problem in that the NOx reduction efficiency is reduced.

상기 EGR 쿨러는 냉각수를 엔진 블록에서 공급받아야 하기 때문에 부가적으로 파이프가 설치되어야 하고 엔진 설계상 좋지 않은 영향을 끼친다.Since the EGR cooler needs to receive coolant from the engine block, additional pipes must be installed and adversely affect the engine design.

그리고 디젤엔진의 경우, NOx와 입자상 물질이 배기가스의 가장 큰 부분을 차지한다. 이러한 디젤엔진에 있어서 NOx는 일반적으로 배기가스 재순환 장치에 의해 저감시키지만 EGR 가스가 연소실 내로 흡입되면 입자상 물질의 발생량이 증가하게 된다.And for diesel engines, NOx and particulate matter make up the largest portion of the exhaust. In such a diesel engine, NOx is generally reduced by an exhaust gas recirculation apparatus, but when the EGR gas is sucked into the combustion chamber, the amount of particulate matter is increased.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 배기가스 내의 유해물질을 포집할 수 있는 장치를 채용하여 N0x와 입자상 물질을 동시에 저감시킬 수 있도록 한 배기가스 재순환 장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and provides an exhaust gas recirculation apparatus capable of simultaneously reducing NOx and particulate matter by employing a device capable of collecting harmful substances in the exhaust gas. have.

도 1은 본 발명에 따른 배기가스 재순환 장치의 구성을 나타낸 개략적인 도면.1 is a schematic view showing the configuration of an exhaust gas recirculation apparatus according to the present invention.

도 2는 본 발명에 따른 배기가스 재순환 장치에 설치된 디젤 입자상 물질 필터의 개략적인 도면.2 is a schematic view of a diesel particulate filter installed in an exhaust gas recirculation apparatus according to the present invention.

도 3은 도 2에 도시된 세라믹 격벽부재의 일 실시예를 나타내 보인 도면.3 is a view illustrating an embodiment of the ceramic partition member illustrated in FIG. 2.

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

20. 디젤 입자상 물질 필터20. Diesel particulate filter

22. 세라믹 격벽부재22. Ceramic bulkhead member

23. 입자상층23. Particulate Layer

24. 플러그 부재24. Plug member

상기와 같은 목적을 달성하기 위한 본 발명의 배기가스 재순환 장치는, 엔진의 일측에 각각 설치된 흡기 매니폴드와, 배기 매니폴드와; 상기 배기 매니폴드로부터 배출된 배기가스가 상기 흡기 매니폴드로 다시 유입될 수 있도록 상기 흡기 매니폴드와 상기 배기 매니폴드 사이에 설치된 EGR 파이프와; 상기 EGR 파이프 상에 설치되어 상기 배기 매니폴드로부터 배출된 재순환 배기가스가 상기 흡기 매니폴드로 유입되기 전 재순환 배기가스에 함유된 입자상 물질을 포집하여 태워 필터링이 되도록 하는 디젤 입자상 물질 필터;를 포함하는 것을 특징으로 한다.Exhaust gas recirculation apparatus of the present invention for achieving the above object, the intake manifold and exhaust manifold respectively provided on one side of the engine; An EGR pipe provided between the intake manifold and the exhaust manifold so that exhaust gas discharged from the exhaust manifold can flow back into the intake manifold; A diesel particulate filter installed on the EGR pipe to collect and burn particulate matter contained in the recycle exhaust gas before the recycle exhaust gas discharged from the exhaust manifold is introduced into the intake manifold; It is characterized by.

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 배기가스 재순환 장치를 개략적으로 나타낸 구성도가 도시되어 있다. 여기에서는 일반적인 배기가스 재순환 장치의 구성 설명은 생략하고, 본 발명의 특징에 따른 구성만을 설명하기로 한다.1 is a schematic view showing an exhaust gas recirculation apparatus according to the present invention. Here, the description of the configuration of the general exhaust gas recirculation apparatus is omitted, and only the configuration according to the features of the present invention will be described.

도면을 참조하면, 본 발명에 따른 배기가스 재순환 장치는, 엔진(10)의 일측에 각각 설치된 흡기 매니폴드와, 배기 매니폴드와, 상기 배기 매니폴드로부터 배출된 배기가스가 상기 흡기 매니폴드로 다시 유입될 수 있도록 상기 흡기 매니폴드와 배기 매니폴드 사이에 설치된 EGR 파이프(13)와, 상기 EGR 파이프(13) 상에 설치되어 배기 매니폴드로부터 배출된 재순환 배기가스가 흡기 매니폴드로 유입되기전, 재순환 배기가스에 함유된 입자상 물질을 포집하여 태워 필터링(filtering)이 되도록 하는 디젤 입자상 물질 필터(DPF; Diesel Particulate Filter)(20)를 포함하여 구성된다.Referring to the drawings, the exhaust gas recirculation apparatus according to the present invention includes an intake manifold, an exhaust manifold, and exhaust gas discharged from the exhaust manifold, respectively, provided on one side of the engine 10. Before the inlet manifold enters the inlet manifold, the EGR pipe 13 installed between the intake manifold and the exhaust manifold, and the recycled exhaust gas provided on the EGR pipe 13 and discharged from the exhaust manifold, And a diesel particulate filter (DPF) 20 for collecting and burning particulate matter contained in the recycle exhaust gas.

상기 디젤 입자상 물질 필터(20)는, EGR 파이프(13)의 일측에 재순환 배기가스가 지나도록 설치된 하우징(21)과, 상기 하우징(21)에 내에 설치되고, 복수층의 제1유로(P1)를 형성하고, 다수의 개구(porous)(P)가 형성된 세라믹 격벽부재(22)와, 상기 세라믹 격벽부재(22)의 측벽에 설치되어 복수층의 제2유로(P2)를 형성하는 입자상층(23)과, 상기 제1,2유로(P1,P2)의 양단중 어느 일단에 설치되어 제1,2유로(P1,P2)가 연속적으로 연통되도록 하는 플러그 부재(24)를 포함하여 구성된다.The diesel particulate filter 20 is provided in the housing 21 installed in one side of the EGR pipe 13 so that the recycle exhaust gas passes, and in the housing 21, and has a plurality of first flow paths P1. To form a ceramic partition member 22 having a plurality of pores P, and a particulate layer disposed on sidewalls of the ceramic partition member 22 to form a plurality of second flow paths P2 ( 23) and a plug member 24 provided at either end of the first and second flow paths P1 and P2 to allow the first and second flow paths P1 and P2 to continuously communicate with each other.

상기 플러그 부재(24)는 제1,2유로(P1,P2)의 양단중 일단을 교번되게 차단되도록 하고, 상기 세라믹 격벽부재(22)는 도 3에 도시된 바와 같이, 하니콤 셀(honey-comb cell) 형식으로 개구(P)가 복수개 형성된다.The plug member 24 alternately cuts one end of both ends of the first and second flow paths P1 and P2, and the ceramic partition member 22 is a honeycomb cell honey-cell as shown in FIG. A plurality of openings P are formed in the form of a comb cell.

상술한 바와 같은 구성을 갖는 본 발명에 따른 배기가스 재순환 장치의 작용을 설명하면 다음과 같다. 여기에서는 일반적인 배기가스 재순환 장치의 작용 설명은 생략하고, 본 발명의 특징에 따른 작용만을 설명하기로 한다.Referring to the operation of the exhaust gas recirculation device according to the present invention having the configuration as described above are as follows. Here, description of the operation of the general exhaust gas recirculation apparatus is omitted, and only the operation according to the features of the present invention will be described.

도면을 다시 각각 참조하면, 상기 제1,2유로(P1,P2)가 교대로 막혀 있고, 이 유로(P1,P2)로 유입된 재순환 배기가스는 제1,2유로(P1,P2)의 일단이 각각 막혀 있음으로 상기 세라믹 격벽부재(22)를 통과하여 제1유로(P1)에서 제2유로(P2)로 빠져나가게 되며, 이때 입자상 물질은 유입된 유로(P1,P2)에 남아 포집된다.Referring back to the drawings, the first and second flow paths P1 and P2 are alternately blocked, and the recycle exhaust gas flowing into the flow paths P1 and P2 is one end of the first and second flow paths P1 and P2. Each of them is blocked so as to pass through the ceramic partition member 22 to exit from the first passage (P1) to the second passage (P2), in which particulate matter remains in the flow path (P1, P2) is collected.

이와 같이, 상기 배기 매니폴드로부터 배출된 재순환 배기가스가 디젤 입자상 물질 필터(20)를 통과하면서 재순환 배기가스 내의 화학적 반응을 통하여 재순환 배기가스가 정화되고, 연소가 촉진되게 된다.As such, while the recycle exhaust gas discharged from the exhaust manifold passes through the diesel particulate filter 20, the recycle exhaust gas is purified through chemical reaction in the recycle exhaust gas, and combustion is promoted.

이러한 재순환 배기가스의 정화 작용으로 입자상 물질 생성의 요인이 되는 재순환 배기가스 내의 입자상 물질들이 제거되어 NOx의 저감을 달성하면서, 입자상 물질의 증가는 발생되지 않는다.The purifying action of the recycle exhaust gas removes particulate matter in the recycle exhaust gas, which is a factor of generating particulate matter, and achieves reduction of NOx, while no increase in particulate matter occurs.

상기 디젤 입자상 물질 필터(20)의 배기가스 재순환 시스템에 장착시 그 크기가 작아 정착이 용이하고, 디젤엔진에서 배출되는 입자상 물질을 포집하여 태우면 유해물질을 80%이상 저감할 수 있다.When the diesel particulate filter 20 is installed in the exhaust gas recirculation system, its size is small and easy to settle, and when the particulate matter discharged from the diesel engine is collected and burned, harmful substances can be reduced by 80% or more.

상술한 바와 같이 본 발명에 따른 배기가스 재순환 장치는 다음과 같은 효과를 갖는다.As described above, the exhaust gas recirculation apparatus according to the present invention has the following effects.

저전력으로 배기가스 배출이 감소하면서 성능에는 영향을 미치지 않고, 디젤 입자상 물질 필터를 통하여 재순환 배기가스중의 NOx 및 입자상 물질 등 유해물질의 대부분이 제거된다.At low power, exhaust emissions are reduced, without affecting performance, and most of the noxious substances such as NOx and particulate matter in the recycle exhaust gas are removed through the diesel particulate filter.

EGR 쿨러를 대체할 경우, EGR 쿨러 장착시 필요한 냉각수 공급 파이프 등의 부품의 설치가 필요 없고, 공정 내에서도 냉각수 공급 통로 설치와 파이프 등의 장착 공정이 필요 없다. 이에 따라 상기 EGR 쿨러에 비해 경량이므로, 중량 감소가 이루어질 수 있고, EGR 쿨러 장착시 필요한 냉각수 공급 파이프 등의 중량도 감소한다. 상기와 같이 EGR 쿨러를 대체할 경우, 원가절감이 이루어질 수 있다.When replacing the EGR cooler, it is not necessary to install components such as cooling water supply pipe required for mounting the EGR cooler, and there is no need to install a cooling water supply passage and mounting process such as pipes in the process. Accordingly, since the weight is lighter than that of the EGR cooler, the weight can be reduced, and the weight of the cooling water supply pipe required for mounting the EGR cooler is also reduced. If the EGR cooler is replaced as described above, cost reduction can be achieved.

또한 고가의 배기가스 저감장치를 별도로 사용하지 않고, 배기계의 가스를사용하므로 원가절감에 도움이 된다.In addition, the use of expensive exhaust gas reducing device separately, and the use of the gas of the exhaust system helps to reduce the 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 가능하여 본 발명의 진정한 보호 범위는 첨부된 특허청구범위에 의해서만 정해져야만 한다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and a person skilled in the art may have various modifications and equivalent embodiments therefrom, thereby providing a true scope of protection of the present invention. Should only be determined by the appended claims.

Claims (4)

엔진의 일측에 각각 설치된 흡기 매니폴드와, 배기 매니폴드와;An intake manifold and an exhaust manifold respectively provided at one side of the engine; 상기 배기 매니폴드로부터 배출된 배기가스가 상기 흡기 매니폴드로 다시 유입될 수 있도록 상기 흡기 매니폴드와 상기 배기 매니폴드 사이에 설치된 EGR 파이프와;An EGR pipe provided between the intake manifold and the exhaust manifold so that exhaust gas discharged from the exhaust manifold can flow back into the intake manifold; 상기 EGR 파이프 상에 설치되어 상기 배기 매니폴드로부터 배출된 재순환 배기가스가 상기 흡기 매니폴드로 유입되기 전 재순환 배기가스에 함유된 입자상 물질을 포집하여 태워 필터링이 되도록 하는 디젤 입자상 물질 필터;를 포함하는 것을 특징으로 하는 배기가스 재순환 장치.A diesel particulate filter installed on the EGR pipe to collect and burn particulate matter contained in the recycle exhaust gas before the recycle exhaust gas discharged from the exhaust manifold is introduced into the intake manifold; An exhaust gas recirculation apparatus, characterized in that. 제1항에 있어서, 상기 디젤 입자상 물질 필터는,The method of claim 1, wherein the diesel particulate filter, 상기 EGR 파이프의 일측에 재순환 배기가스가 지나도록 설치된 하우징과;A housing installed at one side of the EGR pipe to allow recycle exhaust gas to pass therethrough; 상기 하우징에 내에 설치되고, 복수층의 제1유로를 형성하고, 다수의 개구가 형성된 세라믹 격벽부재와;A ceramic partition member provided in the housing, forming a plurality of first flow paths and having a plurality of openings; 상기 세라믹 격벽부재의 측벽에 설치되어 복수층의 제2유로를 형성하는 입자상층과;A particulate layer provided on sidewalls of the ceramic partition member to form a plurality of second flow paths; 상기 제1,2유로의 양단중 어느 일단에 설치되어 상기 제1,2유로가 연속적으로 연통되도록 하는 플러그 부재;를 포함하여 된 것을 특징으로 하는 배기가스 재순환 장치.And a plug member installed at one end of both ends of the first and second flow paths so that the first and second flow paths can continuously communicate with each other. 제1항에 있어서,The method of claim 1, 상기 플러그 부재는 상기 제1,2유로의 양단중 일단을 교번되게 차단되도록 한 것을 특징으로 하는 배기가스 재순환 장치.The plug member is exhaust gas recirculation apparatus characterized in that the one end of the both ends of the first and second flow paths are alternately blocked. 제1항에 있어서,The method of claim 1, 상기 세라믹 격벽부재는 하니콤 셀 형식으로 상기 개구가 복수개 형성된 것을 특징으로 하는 배기가스 재순환 장치.The ceramic partition wall member is an exhaust gas recirculation apparatus, characterized in that a plurality of openings are formed in the form of a honeycomb cell.
KR1020000086942A 2000-12-30 2000-12-30 Exhausted gas recirculation apparatus KR20020058812A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61129016A (en) * 1984-11-28 1986-06-17 Kiyataraa Kogyo Kk Honeycomb shaped particulate collection filter, honeycomb shaped catalyst filter and preparation thereof
JPS61252821A (en) * 1985-05-02 1986-11-10 Toyota Motor Corp Filter for collecting particulates
JPS6220613A (en) * 1985-07-19 1987-01-29 Cataler Kogyo Kk Catalyst filter for removal of particulate
JPH01125515A (en) * 1987-11-07 1989-05-18 Toyota Motor Corp Diesel particulate collecting device
JPH02252959A (en) * 1989-03-23 1990-10-11 Mazda Motor Corp Exhaust gas recirculation controller for engine
JPH0763125A (en) * 1993-08-25 1995-03-07 Isuzu Ceramics Kenkyusho:Kk Diesel engine with egr
KR970045195A (en) * 1995-12-27 1997-07-26 한승준 Exhaust Gas Recirculation Filter for Methanol Diesel Engine
KR100367666B1 (en) * 2000-10-11 2003-01-10 현대자동차주식회사 EGR line with DPT

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61129016A (en) * 1984-11-28 1986-06-17 Kiyataraa Kogyo Kk Honeycomb shaped particulate collection filter, honeycomb shaped catalyst filter and preparation thereof
JPS61252821A (en) * 1985-05-02 1986-11-10 Toyota Motor Corp Filter for collecting particulates
JPS6220613A (en) * 1985-07-19 1987-01-29 Cataler Kogyo Kk Catalyst filter for removal of particulate
JPH01125515A (en) * 1987-11-07 1989-05-18 Toyota Motor Corp Diesel particulate collecting device
JPH02252959A (en) * 1989-03-23 1990-10-11 Mazda Motor Corp Exhaust gas recirculation controller for engine
JPH0763125A (en) * 1993-08-25 1995-03-07 Isuzu Ceramics Kenkyusho:Kk Diesel engine with egr
KR970045195A (en) * 1995-12-27 1997-07-26 한승준 Exhaust Gas Recirculation Filter for Methanol Diesel Engine
KR100367666B1 (en) * 2000-10-11 2003-01-10 현대자동차주식회사 EGR line with DPT

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