KR20080049411A - Exhaust-gas recirculation cooler of diesel engine - Google Patents

Exhaust-gas recirculation cooler of diesel engine Download PDF

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Publication number
KR20080049411A
KR20080049411A KR1020060119929A KR20060119929A KR20080049411A KR 20080049411 A KR20080049411 A KR 20080049411A KR 1020060119929 A KR1020060119929 A KR 1020060119929A KR 20060119929 A KR20060119929 A KR 20060119929A KR 20080049411 A KR20080049411 A KR 20080049411A
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South Korea
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exhaust
egr
cooler
gas recirculation
diesel engine
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KR1020060119929A
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Korean (ko)
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KR101294548B1 (en
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정태만
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현대자동차주식회사
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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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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
    • F01N3/025—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 using fuel burner or by adding fuel to exhaust
    • 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

An exhaust gas recirculation cooler for a diesel engine is provided to reduce the manufacturing cost by separating an additional apparatus for supplying new air. An exhaust gas recirculation cooler for a diesel engine comprises a cooler casing(31) and a positive-type regenerative burner(45). The cooler casing has an exhaust gas recirculation path(30a) and a plurality of tubes(32), through which exhaust gas recirculation gas passes, so that cooling water flows between the tubes. The positive-type regenerative burner includes a fuel injector and an igniter mounted in the cooler casing to ignite fuel injected from the fuel injector. Particulate materials containing soot accumulated in the cooling casing is combusted by the positive-type regenerative burner. The fuel supplied from the fuel injector is exhaust gas discharged from an exhaust manifold.

Description

디젤 엔진의 ＥＧＲ 쿨러{EXHAUST-GAS RECIRCULATION COOLER OF DIESEL ENGINE}EVAR cooler of diesel engine {EXHAUST-GAS RECIRCULATION COOLER OF DIESEL ENGINE}

도 1은 본 발명에 따른 디젤 엔진의 EGR 쿨러가 적용된 차량의 개략 구성도이고, 1 is a schematic configuration diagram of a vehicle to which an EGR cooler of a diesel engine according to the present invention is applied,

도 2는 도 1의 디젤 엔진의 EGR 쿨러를 확대 도시한 단면도이다. FIG. 2 is an enlarged cross-sectional view of an EGR cooler of the diesel engine of FIG. 1.

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

3 : 흡기 라인 4 : EGR 라인3: intake line 4: EGR line

5 : 배기 매니폴드 측 배기 라인 7 : EGR 쿨러 측 배기 라인5: exhaust manifold side exhaust line 7: EGR cooler side exhaust line

20 : 디젤 엔진 30 : EGR 쿨러 20: diesel engine 30: EGR cooler

31 : 쿨러 케이싱 32 : 튜브31: cooler casing 32: tube

40 : 연료 분사기 41 : 점화기40: fuel injector 41: igniter

43 : 보염기 45 : 능동형 재생방식 버너43: flame retardant 45: active regenerative burner

70 : 디젤 미립자 필터70: diesel particulate filter

본 발명은, 디젤 엔진의 EGR 쿨러에 관한 것으로서, 보다 상세하게는, 내부 에 퇴적된 그을음을 포함한 입자상 물질을 연소시켜 냉각 성능을 향상시킬 수 있는 디젤 엔진의 EGR 쿨러에 관한 것이다.The present invention relates to an EGR cooler of a diesel engine, and more particularly, to an EGR cooler of a diesel engine that can improve the cooling performance by burning particulate matter including soot deposited therein.

일반적으로, 디젤 엔진의 경우 배기가스 규제에 따른 배기가스 절감을 위해 EGR(Exhaust-Gas Recirculation) 시스템을 널리 적용하고 있다. 즉, EGR 시스템이란 연소실에서 연소된 후 배출되는 배기가스를 흡기 라인 측으로 재순환시켜 배기가스를 절감하기 위한 것이다. 이러한 EGR 시스템은 냉각수를 이용하여 EGR 가스를 냉각시키는 EGR 쿨러와, 운전 조건에 따라 ECU 연산에 의해 EGR 가스의 유량을 조절하는 EGR 밸브 등으로 구성된다. In general, an exhaust-gas recirculation (EGR) system is widely used in diesel engines to reduce emissions due to emission regulations. That is, the EGR system is to reduce the exhaust gas by recycling the exhaust gas discharged after combustion in the combustion chamber to the intake line side. The EGR system is composed of an EGR cooler that cools the EGR gas using cooling water, and an EGR valve that adjusts the flow rate of the EGR gas by ECU calculation according to the operating conditions.

EGR 쿨러의 내부에는 대략 20여개의 가는 튜브로 채워져 있는데, 이 튜브 속으로 EGR 가스가 통과하게 되고, 튜브와 튜브 사이에 냉각수가 흐르면서 EGR 가스와 열교환 됨으로써 EGR 가스가 냉각되는 것이다. The inside of the EGR cooler is filled with approximately 20 thin tubes, through which the EGR gas passes, and the coolant flows between the tubes and the tubes to exchange heat with the EGR gas to cool the EGR gas.

그러나, 시간이 흐를수록 EGR 쿨러 내에 배기가스 그을음 등이 퇴적됨에 따라 냉각수와 EGR 가스와의 열전달 효율이 저하되어, 전체적으로 EGR 쿨러의 냉각 성능이 저하되는 문제점이 있었다. However, as time passes, as the exhaust gas soot and the like accumulate in the EGR cooler, the heat transfer efficiency between the cooling water and the EGR gas is lowered, and the overall cooling performance of the EGR cooler is deteriorated.

따라서, 본 발명의 목적은, 내부에 그을음 등을 포함한 입자상 물질을 연소시켜 냉각 성능이 향상될 수 있는 디젤 엔진의 EGR 쿨러를 제공하는 것이다. Accordingly, an object of the present invention is to provide an EGR cooler of a diesel engine which can improve the cooling performance by burning particulate matter including soot and the like inside.

상기 목적은, 본 발명에 따라, 디젤 엔진의 EGR(Exhaust-Gas Recirculation) 쿨러에 있어서, 내부에 EGR(Exhaust-Gas Recirculation) 유로가 형성되고, EGR 가 스가 통과하는 복수의 튜브가 마련되어 상기 각 튜브 사이로 냉각수가 흐르는 쿨러 케이싱과; 상기 쿨러 케이싱 내에 장착되며, 연료 분사기와 상기 연료 분사기로부터 분사된 연료를 점화시키는 점화기를 가지는 능동형 재생방식 버너를 포함하여, 상기 쿨러 케이싱 내부에 퇴적된 그을음을 포함한 입자상 물질이 상기 능동형 재생방식 버너에 의해 연소되는 것에 의해 달성된다.According to the present invention, in the exhaust-gas recirculation (EGR) cooler of a diesel engine, an exhaust-gas recirculation (EGR) flow path is formed therein, and a plurality of tubes through which the EGR gas passes are provided. A cooler casing through which coolant flows; A particulate material including soot deposited in the cooler casing, including an active regeneration burner mounted in the cooler casing, the active regeneration burner having a fuel injector and an igniter for igniting fuel injected from the fuel injector. By combustion.

여기서, 상기 연료 분사기로 공급되는 연료는 배기 매니폴드에서 배출된 배기가스로서, 배기가스 내 잔존 산소량을 이용하여 입자상 물질을 연소시키는 것이 바람직하다.Here, the fuel supplied to the fuel injector is exhaust gas discharged from the exhaust manifold, and it is preferable to burn particulate matter using the amount of oxygen remaining in the exhaust gas.

상기 연료 분사기와 상기 점화기 사이에는 EGR 가스의 고속 유동에 의해 화염 날림을 방지하는 보염기가 설치된 것이 바람직하다. Preferably, between the fuel injector and the igniter, an inflammator is provided to prevent flame blowing by a high-speed flow of EGR gas.

상기 입자상 물질이 연소된 후의 배기가스는 배기계의 후단에 설치된 촉매식 디젤 미립자 필터로 유입되어 상기 디젤 미립자 필터를 활성화시키는 것이 바람직하다. It is preferable that the exhaust gas after the particulate matter is combusted flows into the catalytic diesel particulate filter installed at the rear end of the exhaust system to activate the diesel particulate filter.

이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 디젤 엔진의 EGR 쿨러가 적용된 차량의 개략 구성도이고, 도 2는 도 1의 디젤 엔진의 EGR 쿨러를 확대 도시한 단면도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 EGR 쿨러(30)가 장착된 차량은 크게 디젤 엔진(20)과, 디젤 엔진(20)의 흡기계 및 배기계와, 배기계 측에 마련되어 배기계로 배출된 배기가스를 흡기계로 재순환시키기 위한 EGR 시스템(30, 51, 52, 53)으로 구성된다. 이에, 외기는 흡기계 측에 마련된 에어 필터(10)를 거쳐 필터링 된 후, 흡기 라인(3)을 통해 흡기 매니폴드(21)로 유입되어 연소실(23)에서 연소된 다음, 배기 매니폴드(22)를 통해 배기 라인(5)으로 배출된다. 그러면, 배기계 측에 구비된 EGR 시스템(30, 51, 52, 53)에 의해 일부는 EGR 라인(4)을 거쳐 흡기 라인(3)으로 재유입되고 나머지는 디젤 미립자 필터(DPF, Diesel Particulate Filter, 70)를 거쳐 외부로 배출된다. 이 때, 배기 매니폴드 측 배기 라인(5)과 디젤 미립자 필터(70) 사이에는 이 배기가스 유동을 이용하여 흡기를 과급시키기 위한 터보 차져(60)가 구비되어 있다. 1 is a schematic configuration diagram of a vehicle to which an EGR cooler of a diesel engine according to the present invention is applied, and FIG. 2 is an enlarged cross-sectional view of an EGR cooler of the diesel engine of FIG. 1. As shown in these figures, the vehicle equipped with the EGR cooler 30 according to the present invention is largely provided on the diesel engine 20, the intake and exhaust systems of the diesel engine 20, and the exhaust system and discharged to the exhaust system. EGR systems 30, 51, 52, 53 for recycling the exhaust gas to the intake system. Thus, after the outside air is filtered through the air filter 10 provided on the intake machine side, the outside air is introduced into the intake manifold 21 through the intake line 3 and combusted in the combustion chamber 23, and then the exhaust manifold 22 Is discharged to the exhaust line (5). Then, part of the gas is re-introduced to the intake line 3 through the EGR line 4 by the EGR system 30, 51, 52, 53 provided on the exhaust system side, and the rest of the diesel particulate filter (DPF), It is discharged to outside via 70). At this time, a turbocharger 60 is provided between the exhaust manifold side exhaust line 5 and the diesel particulate filter 70 to supercharge intake air using this exhaust gas flow.

EGR 시스템은 크게 배기 매니폴드 측 배기 라인(5)으로 배출된 EGR 가스(배기 매니폴드(22)에서 배출된 배기가스 중 일부)를 냉각시키는 EGR 쿨러(30)와, 운전 조건에 따라 ECU 연산에 의해 EGR 가스의 유입량을 조절하는 EGR 밸브(51)와, EGR 쿨러(30)에서 냉각되어 흡기 라인(3)의 외기와 혼합되는 EGR 가스의 배출량을 조절하는 리드 밸브(52)와, EGR 쿨러(30)에서 냉각되어 EGR 쿨러 측 배기 라인(7)으로 배출되는 EGR 가스의 배출량을 조절하는 바이패스 밸브(53) 등으로 구성된다. The EGR system is composed of an EGR cooler 30 that cools the EGR gas (part of the exhaust gas discharged from the exhaust manifold 22) largely discharged to the exhaust line 5 on the exhaust manifold side, EGR valve 51 for adjusting the inflow amount of the EGR gas, a reed valve 52 for adjusting the discharge amount of EGR gas cooled in the EGR cooler 30 and mixed with the outside air of the intake line 3, and an EGR cooler ( And a bypass valve 53 for controlling the discharge of the EGR gas cooled at 30) and discharged to the EGR cooler side exhaust line 7.

EGR 쿨러(30)는 크게 내부에 EGR 유로(30a)가 형성된 쿨러 케이싱(31)과, 쿨러 케이싱(31) 내에 장착되어 쿨러 케이싱(31) 내부에 퇴적된 그을음을 포함한 입자상 물질을 연소시키기 위한 능동형 재생방식 버너(45)를 포함하여 이루어진다. The EGR cooler 30 is largely active in order to burn the particulate matter including the cooler casing 31 in which the EGR flow path 30a is formed, and the soot mounted in the cooler casing 31 and deposited in the cooler casing 31. And a regeneration type burner 45.

쿨러 케이싱(31)의 내부에는 EGR 가스를 위한 EGR 유로(30a)가 형성되어 있으며, 냉각수 입구(61)와 냉각수 출구(62) 사이의 위치에는 복수의 튜브(32)가 길이방향으로 설치되어 있다. 이에, 쿨러 케이싱(31) 내부로 유입된 EGR 가스는 복수의 튜브(32) 내부를 지나가는데, 이 때 냉각수 입구(61)를 통해 공급되는 냉각수가 각 튜브(32) 사이를 지나면서 EGR 가스와 열교환된 후 냉각수 출구(62)를 통해 배출됨으로써 EGR 가스가 냉각될 수 있다. An EGR flow path 30a for the EGR gas is formed inside the cooler casing 31, and a plurality of tubes 32 are provided in the longitudinal direction at a position between the coolant inlet 61 and the coolant outlet 62. . Thus, the EGR gas introduced into the cooler casing 31 passes through the plurality of tubes 32, wherein the coolant supplied through the coolant inlet 61 passes between each tube 32 to exchange heat with the EGR gas. And then discharged through the coolant outlet 62 to cool the EGR gas.

여기서, EGR 쿨러(30)는 일반적으로 중/저속 부분 부하 구간에서 운전되는데, 이 때 저속 고부하 및 고속 고부하 영역에서는 EGR 밸브(51)가 폐쇄되어 EGR 쿨러(30)로 EGR 가스가 유입되지 못한다. 이와 같이 EGR 운전 영역에서는 EGR 가스 온도가 대략 250 ~ 400 ℃ 정도인데, 이 때 쿨러 케이싱(31) 내부에 퇴적된 그을음 등을 포함한 입자상 물질(이하, 입자상 물질이라 칭함)이 연소되기에는 너무 낮은 온도이다. 다시 말해, 입자상 물질은 보통 600 ℃ 이상에서 연소되기 때문에 EGR 가스의 온도로는 연소될 수 없는 것이다. 따라서, 본 발명은 입자상 물질을 능동적으로 연소시키기 위해 능동형 재생방식 버너(45)를 구비하는 점에서 특징이 있다.In this case, the EGR cooler 30 is generally operated in the medium / low speed partial load section. At this time, the EGR valve 51 is closed in the low speed high load and high speed high load regions so that the EGR gas does not flow into the EGR cooler 30. As described above, in the EGR operating region, the EGR gas temperature is about 250 to 400 ° C. At this time, the temperature is too low for the particulate matter (hereinafter referred to as particulate matter) including soot deposited in the cooler casing 31 to be burned. to be. In other words, particulate matter cannot be combusted at the temperature of the EGR gas because it is usually combusted above 600 ° C. Accordingly, the present invention is characterized in that an active regenerative burner 45 is provided to actively burn particulate matter.

능동형 재생방식 버너(45)는 쿨러 케이싱(31) 내부에 장착되며, 복수의 튜브(32) 전방에 설치된 연료 분사기(40)와, 연료 분사기(40) 근처에 마련되어 연료 분사기(40)에서 분사된 연료를 점화시키는 점화기(41)를 포함하여 이루어진다. 이 때, 능동형 재생방식 버너(45)는 강제 재생방식으로 이루어져, 사용자가 원하는 시기에 높은 열원을 임의로 효율적으로 사용할 수 있다. The active regenerative burner 45 is mounted inside the cooler casing 31 and provided near the fuel injector 40 and the fuel injector 40 installed in front of the plurality of tubes 32 and injected from the fuel injector 40. And an igniter 41 for igniting fuel. At this time, the active regeneration burner 45 is made of a forced regeneration method, it is possible to efficiently use a high heat source at any time desired by the user.

연료 분사기(40)는 노즐 타입으로 이루어져 있으나, 파이프 타입으로 이루어져 연료가 분사될 수도 있음은 물론이다. 여기서, 연료 분사기(40)로 공급되는 연료로서 배기 매니폴드 측 배기 라인(5)의 배기가스를 이용하는데, 이에 따로 신기를 공급할 필요없이 상기 배기가스 내 잔존 산소량을 이용하여 점화기(41)에 의해 점화될 수 있으므로 신기를 공급하기 위한 별도의 장치가 불필요하므로 제조 원가 가 절감될 수 있다. The fuel injector 40 has a nozzle type, but of course, the fuel may be injected with a pipe type. Here, the exhaust gas of the exhaust line 5 on the exhaust manifold side is used as the fuel supplied to the fuel injector 40, and the igniter 41 uses the remaining oxygen amount in the exhaust gas without supplying fresh air. Since it can be ignited, a separate device for supplying fresh air is unnecessary, thus reducing manufacturing costs.

점화기(41)는 연료 분사기(40)에서 분사되는 연료를 점화시키기 위한 장치로서, 연료 분사기(40)와 점화기(41) 사이에는 점화시 EGR 가스의 고속 유동에 의해 화염이 날리는 것을 방지하기 위한 보염기(Flame Holder, 43)가 설치되어 화염 안정화에 도움이 될 수 있다. The igniter 41 is a device for igniting the fuel injected from the fuel injector 40. Between the fuel injector 40 and the igniter 41 is a beam for preventing the flame from being blown by the high-speed flow of EGR gas during ignition. Flame holder, 43, can be installed to help stabilize the flame.

상기와 같이, 능동형 재생방식 버너(45)를 이용하여 쿨러 케이싱(31) 내에 퇴적된 입자상 물질을 거의 제거할 수 있으므로 EGR 쿨러(30)의 냉각 효율을 증대될 수 있다. As described above, since the particulate matter deposited in the cooler casing 31 may be almost removed using the active regeneration burner 45, the cooling efficiency of the EGR cooler 30 may be increased.

뿐만 아니라, 능동형 재생방식 버너(45)에 의해 가열된 EGR 가스가 바이패스 밸브(53)를 통해 촉매식 디젤 미립자 필터(70)로 유입되면, 고온의 EGR 가스는 디젤 미립자 필터(70)를 활성화시키는데 사용될 수 있으므로 디젤 미립자 필터(70)의 여과 효과를 개선하는 이점이 있다. In addition, when the EGR gas heated by the active regenerative burner 45 flows into the catalytic diesel particulate filter 70 through the bypass valve 53, the high temperature EGR gas activates the diesel particulate filter 70. It can be used to improve the filtration effect of the diesel particulate filter 70.

이상 설명한 바와 같이, 본 발명에 따르면, 내부에 그을음 등을 포함한 입자상 물질을 연소시켜 냉각 성능이 향상될 수 있는 디젤 엔진의 EGR 쿨러가 제공된다. As described above, according to the present invention, there is provided an EGR cooler of a diesel engine which can improve the cooling performance by burning particulate matter including soot and the like inside.

Claims (4)

내부에 EGR(Exhaust-Gas Recirculation) 유로가 형성되고, EGR 가스가 통과하는 복수의 튜브가 마련되어 상기 각 튜브 사이로 냉각수가 흐르는 쿨러 케이싱과;A cooler casing having an exhaust-gas recirculation (EGR) flow path formed therein and having a plurality of tubes through which the EGR gas passes; 상기 쿨러 케이싱 내에 장착되며, 연료 분사기와 상기 연료 분사기로부터 분사된 연료를 점화시키는 점화기를 가지는 능동형 재생방식 버너를 포함하여,An active regenerative burner mounted in said cooler casing, said active burner having a fuel injector and an igniter for igniting fuel injected from said fuel injector, 상기 쿨러 케이싱 내부에 퇴적된 그을음을 포함한 입자상 물질이 상기 능동형 재생방식 버너에 의해 연소되는 것을 특징으로 하는 디젤 엔진의 EGR(Exhaust-Gas Recirculation) 쿨러.An exhaust-gas recirculation (EGR) cooler of a diesel engine, wherein particulate matter including soot deposited in the cooler casing is combusted by the active regeneration burner. 제1항에 있어서,The method of claim 1, 상기 연료 분사기로 공급되는 연료는 배기 매니폴드에서 배출된 배기가스로서, 배기가스 내 잔존 산소량을 이용하여 입자상 물질을 연소시키는 것을 특징으로 하는 디젤 엔진의 EGR(Exhaust-Gas Recirculation) 쿨러.The fuel supplied to the fuel injector is exhaust gas discharged from an exhaust manifold, and the exhaust-gas recirculation (EGR) cooler of a diesel engine, characterized in that to burn particulate matter using the amount of oxygen remaining in the exhaust gas. 제1항에 있어서, The method of claim 1, 상기 연료 분사기와 상기 점화기 사이에는 EGR 가스의 고속 유동에 의해 화염 날림을 방지하는 보염기가 설치된 것을 특징으로 하는 디젤 엔진의 EGR(Exhaust-Gas Recirculation) 쿨러.Exhaust-Gas Recirculation (EGR) cooler of a diesel engine, characterized in that the flame injector is installed between the fuel injector and the igniter to prevent flame blowing by the high-speed flow of EGR gas. 제1항 내지 제3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 입자상 물질이 연소된 후의 배기가스는 배기계의 후단에 설치된 촉매식 디젤 미립자 필터로 유입되어 상기 디젤 미립자 필터를 활성화시키는 것을 특징으로 하는 디젤 엔진의 EGR(Exhaust-Gas Recirculation) 쿨러.Exhaust-Gas Recirculation (EGR) cooler of a diesel engine, wherein the exhaust gas after the particulate matter is burned is introduced into the catalytic diesel particulate filter installed at the rear end of the exhaust system to activate the diesel particulate filter.
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CN105587411A (en) * 2014-11-11 2016-05-18 福特环球技术公司 Method and system for EGR control
CN107642438A (en) * 2016-07-22 2018-01-30 现代自动车株式会社 Cooler for recycled exhaust gas for vehicle

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JP6313833B1 (en) * 2016-10-24 2018-04-18 川崎重工業株式会社 Marine engine system and control method for marine engine system

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KR100603502B1 (en) * 2006-01-05 2006-07-24 오상택 Car egr cooler thermal cycle test system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587411A (en) * 2014-11-11 2016-05-18 福特环球技术公司 Method and system for EGR control
CN107642438A (en) * 2016-07-22 2018-01-30 现代自动车株式会社 Cooler for recycled exhaust gas for vehicle

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