KR20130107033A - Exahaust gas treatment apparatus for diesel engine - Google Patents

Exahaust gas treatment apparatus for diesel engine Download PDF

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Publication number
KR20130107033A
KR20130107033A KR1020120028797A KR20120028797A KR20130107033A KR 20130107033 A KR20130107033 A KR 20130107033A KR 1020120028797 A KR1020120028797 A KR 1020120028797A KR 20120028797 A KR20120028797 A KR 20120028797A KR 20130107033 A KR20130107033 A KR 20130107033A
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South Korea
Prior art keywords
catalyst
exhaust gas
treatment apparatus
gas treatment
glow plug
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KR1020120028797A
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Korean (ko)
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김세영
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현대자동차주식회사
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Priority to KR1020120028797A priority Critical patent/KR20130107033A/en
Publication of KR20130107033A publication Critical patent/KR20130107033A/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
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: An exhaust gas treatment apparatus of a diesel engine is provided to rapidly reach a catalytic activation temperature by rapid heating of a diesel oxidation catalyst because a glow plug heats exhaust gas to flow into the diesel oxidation catalyst. CONSTITUTION: An exhaust gas treatment apparatus of a diesel engine comprises a heat transfer device (1), a catalyst temperature sensor (3), and a controller (5). The heat transfer device is installed in the catalyst upstream of an exhaust system. The catalyst temperature sensor senses the temperature of a catalyst. The controller receives signals from the catalyst temperature sensor and operates the heat transfer device until the temperature reaches a predetermined temperature. The heat transfer device comprises a glow plug (7). [Reference numerals] (AA) Exhaust; (BB) Air; (CC) Intercooler; (DD) Engine

Description

디젤엔진의 배기가스 처리 장치{EXAHAUST GAS TREATMENT APPARATUS FOR DIESEL ENGINE}Exhaust gas treatment system of diesel engine {EXAHAUST GAS TREATMENT APPARATUS FOR DIESEL ENGINE}

본 발명은 디젤엔진의 배기가스 처리 장치에 관한 것으로서, 보다 상세하게는 디젤엔진의 냉시동 초기에 신속히 촉매활성화 온도에 도달할 수 있도록 하는 기술에 관한 것이다.The present invention relates to an apparatus for treating exhaust gas of a diesel engine, and more particularly, to a technique for rapidly reaching a catalyst activation temperature at the initial stage of cold start of a diesel engine.

차량의 배기가스 중의 유해물질에 대해서 각국의 환경 규제가 점차 강화되고 있으며, 향후 발효될 유로6에서는 상용디젤 차량의 경우 COLD모드와 HOT모드를 별도로 규정하며 보다 강화된 기준을 요구하고 있다.
The environmental regulations of each country are gradually tightening on the harmful substances in the exhaust gas of vehicles, and Euro 6, which will be in effect in the future, regulates the COLD mode and the HOT mode separately for commercial diesel vehicles, and requires more stringent standards.

엔진의 냉시동시와 같은 경우를 규제하고 있는 COLD모드의 규제를 만족시키기 위해서 가장 유력한 방법 중 하나는 배기가스 후처리장치를 구성하고 있는 촉매들이 보다 신속히 활성화되어 정화작용을 원활히 수행할 수 있도록 하는 방법이다.
One of the most promising methods to satisfy the COLD mode regulation, which regulates cases such as cold start of the engine, is to make catalysts constituting the exhaust gas aftertreatment system activate faster and perform the purification operation smoothly. to be.

종래, 보다 신속하게 촉매를 촉매활성화 온도에 도달하게 하기 위하여, 분사시기 지연, 후분사, 흡기쓰로틀밸브 등을 활용하고 있는데, 상기 분사시기 지연이나 후분사의 경우 엔진의 동력 발생에 무관하게 소모되는 연료량이 증가하여 연비를 저하시키는 원인이 되고 있으며, 상기 흡기쓰로틀밸브를 사용하여 원활한 EGR을 구현하는 방법은 펌핑손실의 증가 및 공기량 부족에 의한 매연 등 각종 부작용을 수반하는 단점이 있다.
Conventionally, in order to reach the catalyst activation temperature more quickly, the injection timing delay, post injection, intake throttle valve, etc. are used, but the injection time delay or post injection is consumed regardless of engine power generation. Fuel consumption is increased, causing fuel economy to be reduced, and a method of implementing smooth EGR using the intake throttle valve has disadvantages involving various side effects such as increase in pumping loss and smoke due to insufficient air volume.

상기의 발명의 배경이 되는 기술로서 설명된 사항들은 본 발명의 배경에 대한 이해 증진을 위한 것일 뿐, 이 기술분야에서 통상의 지식을 가진 자에게 이미 알려진 종래기술에 해당함을 인정하는 것으로 받아들여져서는 안 될 것이다.The matters described as the background of the above-described invention are merely for the purpose of improving the understanding of the background of the present invention, and are accepted as acknowledging that they correspond to the prior art already known to those skilled in the art. I will not.

KRKR 10201000358231020100035823 AA

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 연비가 저하되거나 펌핑손실이 증가되는 등의 부작용을 거의 수반하지 않고, 배기가스 후처리 장치들의 촉매를 보다 신속히 촉매활성화 온도에 도달할 수 있도록 하여, 배기가스 중의 유해물질을 보다 원활히 정화하여 각종 규제를 충족시킬 수 있도록 하고 환경을 보호할 수 있도록 한 디젤엔진의 배기가스 처리 장치를 제공함에 그 목적이 있다.The present invention has been made to solve the above-described problems, and has almost no side effects such as lower fuel economy or increased pumping loss, and the catalysts of the exhaust gas aftertreatment devices can reach the catalyst activation temperature more quickly. It is an object of the present invention to provide an exhaust gas treatment apparatus of a diesel engine that enables to smoothly purify harmful substances in exhaust gas to satisfy various regulations and to protect the environment.

상기한 바와 같은 목적을 달성하기 위한 본 발명 디젤엔진의 배기가스 처리 장치는Exhaust gas treatment apparatus of the present invention diesel engine for achieving the object as described above

배기계의 촉매 상류에 설치된 전열장치와;A heat transfer device installed upstream of the catalyst of the exhaust system;

상기 촉매의 온도를 감지하도록 구비된 촉매온도센서와;A catalyst temperature sensor provided to sense a temperature of the catalyst;

상기 촉매온도센서로부터의 신호를 받아 소정의 기준온도에 이르기까지 상기 전열장치를 구동하는 컨트롤러;A controller which receives the signal from the catalyst temperature sensor and drives the heat transfer device to a predetermined reference temperature;

를 포함하여 구성된 것을 특징으로 한다.And a control unit.

본 발명은 연비가 저하되거나 펌핑손실이 증가되는 등의 부작용을 거의 수반하지 않고, 배기가스 후처리 장치들의 촉매를 보다 신속히 촉매활성화 온도에 도달할 수 있도록 하여, 배기가스 중의 유해물질을 보다 원활히 정화하여 각종 규제를 충족시킬 수 있도록 하고 환경을 보호할 수 있도록 한다.The present invention has almost no side effects such as lower fuel consumption or increased pumping loss, and enables the catalysts of the exhaust gas aftertreatment devices to reach the catalyst activation temperature more quickly, thereby purifying harmful substances in the exhaust gas more smoothly. To meet various regulations and to protect the environment.

도 1은 본 발명에 따른 디젤엔진의 배기가스 처리 장치의 구성을 설명한 도면,
도 2는 본 발명의 작동을 설명한 도면,
도 3은 본 발명의 컨트롤러가 글로우플러그를 작동시키는 작동예를 예시한 도면이다.1 is a view for explaining the configuration of the exhaust gas treatment apparatus for a diesel engine according to the present invention;
2 illustrates the operation of the present invention;
3 is a view illustrating an operation example in which the controller of the present invention operates the glow plug.

도 1을 참조하면, 본 발명 디젤엔진의 배기가스 처리 장치의 실시예는 배기계의 촉매 상류에 설치된 전열장치(1)와; 상기 촉매의 온도를 감지하도록 구비된 촉매온도센서(3)와; 상기 촉매온도센서(3)로부터의 신호를 받아 소정의 기준온도에 이르기까지 상기 전열장치(1)를 구동하는 컨트롤러(5)를 포함하여 구성된다.
1, an embodiment of an exhaust gas treatment apparatus of a diesel engine of the present invention includes: a heat transfer apparatus 1 provided upstream of a catalyst of an exhaust system; A catalyst temperature sensor 3 provided to sense the temperature of the catalyst; And a controller 5 for receiving the signal from the catalyst temperature sensor 3 and driving the heat transfer device 1 up to a predetermined reference temperature.

본 실시예에서, 상기 전열장치(1)는 글로우플러그(7)로 이루어진다. 즉, 상기 글로우플러그(7)는 종래 디젤엔진의 시동성 향상을 위해 예열장치로 사용되는 것인데, 이를 촉매로 유입되는 배기가스의 온도를 상승시키는 용도로 활용하도록 하는 것으로, 별도의 새로운 전열장치를 설계할 필요 없이 간단하게 기존의 배기계에 적용할 수 있는 장점이 있다.
In the present embodiment, the heat transfer device 1 consists of a glow plug 7. That is, the glow plug 7 is to be used as a preheating device to improve the startability of the conventional diesel engine, and to use this to increase the temperature of the exhaust gas flowing into the catalyst, a separate new heating device is designed There is an advantage that can be simply applied to the existing exhaust system without having to.

상기 글로우플러그(7)는 엔진 배기계의 터보차져 터빈(9)과 디젤산화촉매(11) 사이에 설치되고, 상기 촉매온도센서(3)는 상기 디젤산화촉매(11) 전단의 온도를 감지할 수 있도록 설치된다.
The glow plug 7 is installed between the turbocharger turbine 9 and the diesel oxidation catalyst 11 of the engine exhaust system, and the catalyst temperature sensor 3 can sense the temperature of the front end of the diesel oxidation catalyst 11. To be installed.

즉, 본 실시예에서는 도 1에 도시된 바와 같이, 엔진 배기계는, 터보차져의 터빈(9) 하류에 디젤산화촉매(DOC: DIESEL OXYDATION CATALYST: 11), DPF(DIESEL PARTICULATE FILTER), SCR(SELECTIVE CATALYTIC REDUCTION), AOC(AMMONIA OXIDATION CATALYST)가 차례로 배치되어 있고, 상기 글로우플러그(7)는 상기 디젤산화촉매(11) 상류와 상기 터빈(9) 하류 사이에 설치되어, 상기 터빈(9)을 통해 배출되는 배기가스를 가열하여 상기 디젤산화촉매(11)로 유입시킬 수 있도록 된 것이다.
That is, in the present embodiment, as shown in FIG. 1, the engine exhaust system includes a diesel oxidation catalyst (DOC: DIESEL OXYDATION CATALYST: 11), DPF (DIESEL PARTICULATE FILTER), and SCR (SELECTIVEIVE) downstream of the turbine 9 of the turbocharger. CATALYTIC REDUCTION) and AOC (AMMONIA OXIDATION CATALYST) are arranged in turn, and the glow plug 7 is installed between the diesel oxidation catalyst 11 upstream and downstream of the turbine 9, and through the turbine 9 The exhaust gas is heated to be introduced into the diesel oxidation catalyst 11.

상기한 바와 같이 구성된 본 발명은 도 2에 도시된 바와 같이 엔진이 운전되면, 컨트롤러(5)가 상기 촉매온도센서(3)의 출력을 모니터링 하여, 상기 소정의 기준온도인 A℃ 보다 작은 경우에는 상기 글로우플러그(7)에 전원을 공급하여 상기 디젤산화촉매(11)로 유입되는 배기가스의 온도를 상승시켜서, 상기 디젤산화촉매(11)의 신속한 활성화가 이루어지도록 한다.
According to the present invention configured as described above, when the engine is operated as shown in FIG. 2, the controller 5 monitors the output of the catalyst temperature sensor 3, and is smaller than the predetermined reference temperature A ° By supplying power to the glow plug 7 to increase the temperature of the exhaust gas flowing into the diesel oxidation catalyst 11, it is possible to quickly activate the diesel oxidation catalyst (11).

물론, 상기 촉매온도센서(3)에서 측정된 온도가 상기 기준온도 이상이면, 더 이상 배기가스를 가열할 필요가 없으므로 상기 글로우플러그(7)에 공급하는 전원을 차단하도록 하는 것이다.
Of course, when the temperature measured by the catalyst temperature sensor 3 is above the reference temperature, it is no longer necessary to heat the exhaust gas so that the power supply to the glow plug 7 is cut off.

이처럼 엔진의 냉시동 등과 같이 촉매의 온도가 낮아 원활한 배기가스 정화작용이 어려운 상황에서는 상기 글로우플러그가 배기가스를 가열하여 상기 디젤산화촉매로 유입되도록 함으로써, 상기 디젤산화촉매의 신속한 가열이 이루어져, 촉매의 활성화 온도에 보다 신속히 도달하도록 함으로써, 배기가스의 유해성분 정화가 보다 조기에 이루어질 수 있게 됨으로써, COLD모드 규제 등에 대응할 수 있게 되는 것이다.
As such, when the temperature of the catalyst is low, such as cold start of the engine, it is difficult to smoothly purify the exhaust gas, the glow plug heats the exhaust gas to flow into the diesel oxidation catalyst, thereby rapidly heating the diesel oxidation catalyst. By more quickly reaching the activation temperature, the purification of harmful components of the exhaust gas can be carried out earlier, so that it is possible to cope with the regulation of the COLD mode.

여기서, 상기 촉매온도센서(3)의 측정값을 비교하는 상기 기준온도는 상기 디젤산화촉매(11)의 활성화가 원하는 수준으로 이루어졌음을 나타내는 수준의 온도로 정해질 수 있을 것이다.
Here, the reference temperature comparing the measured values of the catalyst temperature sensor 3 may be determined as the temperature of the level indicating that the activation of the diesel oxidation catalyst 11 is made to the desired level.

한편, 상기 컨트롤러(5)는 도 3에 예시한 바와 같이 초기의 소정시간(T) 동안 상기 글로우플러그(7)에 연속적인 전원을 공급한 후, 상기 소정시간 경과 후에는 간헐적으로 전원을 공급하도록 하는 것이 바람직하다.
Meanwhile, as illustrated in FIG. 3, the controller 5 supplies continuous power to the glow plug 7 for an initial predetermined time T, and then supplies power intermittently after the predetermined time elapses. It is desirable to.

이는 상기 글로우플러그(7)에 지속적인 전원을 공급하여, 상기 글로우플러그(7)의 내구성이 저하되는 것을 방지하기 위한 것으로서, 예컨대 상기 소정시간은 수십초 내지는 수분 정도의 범위에서 설정될 수 있을 것이며, 이후에는 도시된 바와 같은 간헐적인 전원공급으로 배기가스의 가열은 지속하되, 글로우플러그(7)의 내구 피로도는 축적되지 않도록 하는 것이다.
This is to prevent the durability of the glow plug 7 from being lowered by supplying continuous power to the glow plug 7. For example, the predetermined time may be set in the range of several tens of seconds or several minutes. Thereafter, the heating of the exhaust gas is continued by the intermittent power supply as shown, but the endurance fatigue of the glow plug 7 is not accumulated.

따라서, 상기 글로우플러그에 연속적인 전원을 공급하는 소정의 시간은, 보다 신속한 촉매 활성화를 달성하도록 가급적 길게 설정하되, 글로우플러그의 적절한 내구성을 확보할 수 있는 수준으로 제한되는 시간으로 설정될 수 있을 것이다.
Therefore, the predetermined time for supplying continuous power to the glow plug may be set as long as possible to achieve faster catalyst activation, but limited to a time that can be secured to the appropriate durability of the glow plug. .

본 발명은 특정한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 제공되는 본 발명의 기술적 사상을 벗어나지 않는 한도 내에서, 본 발명이 다양하게 개량 및 변화될 수 있다는 것은 당업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

1; 전열장치
3; 촉매온도센서
5; 컨트롤러
7; 글로우플러그
9; 터빈
11; 디젤산화촉매One; Heating device
3; Catalytic temperature sensor
5; controller
7; Glow plug
9; turbine
11; Diesel Oxidation Catalyst

Claims (5)

배기계의 촉매 상류에 설치된 전열장치(1)와;
상기 촉매의 온도를 감지하도록 구비된 촉매온도센서(3)와;
상기 촉매온도센서(3)로부터의 신호를 받아 소정의 기준온도에 이르기까지 상기 전열장치(1)를 구동하는 컨트롤러(5);
를 포함하여 구성된 것을 특징으로 하는 디젤엔진의 배기가스 처리 장치.A heat transfer device 1 provided upstream of the catalyst of the exhaust system;
A catalyst temperature sensor 3 provided to sense the temperature of the catalyst;
A controller (5) which receives the signal from the catalyst temperature sensor (3) and drives the heat transfer device (1) to a predetermined reference temperature;
Exhaust gas treatment apparatus of a diesel engine comprising a. 청구항 1에 있어서,
상기 전열장치(1)는 글로우플러그(7)로 이루어진 것
을 특징으로 하는 디젤엔진의 배기가스 처리 장치.The method according to claim 1,
The heat transfer device 1 is composed of a glow plug (7)
Exhaust gas treatment apparatus of a diesel engine, characterized in that. 청구항 2에 있어서,
상기 글로우플러그(7)는 엔진 배기계의 터보차져 터빈(9)과 디젤산화촉매(11) 사이에 설치되고;
상기 촉매온도센서(3)는 상기 디젤산화촉매(11) 전단의 온도를 감지할 수 있도록 설치된 것
을 특징으로 하는 디젤엔진의 배기가스 처리 장치.The method according to claim 2,
The glow plug 7 is installed between the turbocharger turbine 9 of the engine exhaust system and the diesel oxidation catalyst 11;
The catalyst temperature sensor 3 is installed so as to detect the temperature of the front end of the diesel oxidation catalyst (11)
Exhaust gas treatment apparatus of a diesel engine, characterized in that. 청구항 2에 있어서,
상기 컨트롤러(5)는 초기의 소정시간 동안 상기 글로우플러그(7)에 연속적인 전원을 공급한 후, 상기 소정시간 경과 후에는 간헐적으로 전원을 공급하도록 구성된 것
을 특징으로 하는 디젤엔진의 배기가스 처리 장치.The method according to claim 2,
The controller 5 is configured to supply power continuously to the glow plug 7 for an initial predetermined time, and to supply power intermittently after the predetermined time elapses.
Exhaust gas treatment apparatus of a diesel engine, characterized in that. 청구항 2에 있어서,
상기 글로우플러그(7)가 설치되는 엔진 배기계는, 터보차져의 터빈(9) 하류에 디젤산화촉매(11), DPF, SCR, AOC가 차례로 배치되고;
상기 글로우플러그(7)는 상기 디젤산화촉매(11) 상류와 상기 터빈(9) 하류 사이에 설치된 것
을 특징으로 하는 디젤엔진의 배기가스 처리 장치.The method according to claim 2,
In the engine exhaust system in which the glow plug 7 is installed, the diesel oxidation catalyst 11, DPF, SCR, and AOC are sequentially disposed downstream of the turbine 9 of the turbocharger;
The glow plug 7 is installed between the diesel oxidation catalyst 11 upstream and the turbine 9 downstream.
Exhaust gas treatment apparatus of a diesel engine, characterized in that.
KR1020120028797A 2012-03-21 2012-03-21 Exahaust gas treatment apparatus for diesel engine KR20130107033A (en)

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Application Number Priority Date Filing Date Title
KR1020120028797A KR20130107033A (en) 2012-03-21 2012-03-21 Exahaust gas treatment apparatus for diesel engine

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KR20130107033A true KR20130107033A (en) 2013-10-01

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