KR20160097616A - The dosing module - Google Patents

The dosing module Download PDF

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Publication number
KR20160097616A
KR20160097616A KR1020150019508A KR20150019508A KR20160097616A KR 20160097616 A KR20160097616 A KR 20160097616A KR 1020150019508 A KR1020150019508 A KR 1020150019508A KR 20150019508 A KR20150019508 A KR 20150019508A KR 20160097616 A KR20160097616 A KR 20160097616A
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South Korea
Prior art keywords
cooling water
housing
injector
coolant
urea
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KR1020150019508A
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Korean (ko)
Inventor
양대원
최영경
이덕재
김종균
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현대자동차주식회사
기아자동차주식회사
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Application filed by 현대자동차주식회사, 기아자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020150019508A priority Critical patent/KR20160097616A/en
Priority to DE102015114960.5A priority patent/DE102015114960A1/en
Priority to CN201510613199.XA priority patent/CN105863789A/en
Publication of KR20160097616A publication Critical patent/KR20160097616A/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
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/024—Exhaust treating devices having provisions not otherwise provided for for cooling the device using a liquid
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • 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

The present invention relates to a dosing module, comprising: an injector to spray urea on a front end of a SCR catalyst mounted on an exhaust pipe to reduce NOx; a housing to receive the injector and the urea; and a coolant hose to inflow or outflow the coolant to the housing. The coolant hose comprises a collecting unit to collect gas included in the coolant at a higher location than the housing. According to the present invention, the dosing module has an effect of increasing an injector cooling efficiency, by continuously filling the liquid phase coolant in a coolant chamber formed on the dosing module, even when the coolant flow is stopped by an engine rotation stopping when a temperature of the exhaust gas is in a high state such as a state directly after a DPF generation.

Description

도징모듈{The dosing module}The dosing module

본 발명은 도징모듈에 관한 것으로, 더욱 상세하게는, SCR촉매 전단으로 우레아를 분사하는 인젝터에 열해가 발생되는 것이 감소 되는 도징모듈에 관한 것이다.
The present invention relates to a dosing module, and more particularly, to a dosing module in which the occurrence of thermal degradation in the injector injecting urea into the SCR catalyst front end is reduced.

디젤 엔진이 적용되는 차량은 북미디젤 TIER2/BIN5 규제나 유로 6의 배기가스 규제에 따라 배기가스에 포함된 NOx(질소산화물), CO(일산화탄소), THC(탄화수소), 그을음(SOOT), 입자상 물질(PM; PATICULATE MATTERS) 등의 유해물질을 제거시키기 위한 다양한 형태의 후처리 장치가 장착된다.Diesel engine vehicles are subject to NOx (nitrogen oxides), CO (carbon monoxide), THC (hydrocarbons), soot (SOOT), particulate matter (NOx), and the like contained in the exhaust gas according to North American diesel TIER2 / And various types of post-treatment devices for removing harmful substances such as PM (PATICULATE MATTERS).

후처리 장치로는 엔진과 근접하게 배치되어 NMHC(NON-METHANE HYDROCARBONS; 비 메탄 탄화수소) 변환기능을 실행하는 DOC(DIESEL OXIDATION CATALYST; 디젤 산화 촉매기), 입자상 물질을 포집하는 DPF(DISEL PARTICULATE FILTER; 배기가스 후처리장치), 환원작용을 통해 NOx를 정화하는 SCR촉매(선택적 환원 촉매; SELECTIVE CATALYTIC REDUCTION)가 포함된다.The post-treatment equipment includes DOC (DIESEL OXIDATION CATALYST), DPF (DISEL PARTICULATE FILTER), which collects particulate matter, which is placed close to the engine and performs NMHC (NON-METHANE HYDROCARBONS) An exhaust gas aftertreatment device), and an SCR catalyst (selective reduction catalyst) for purifying NOx through reduction action.

SCR촉매는 NOx를 정화하기 위한 환원제로 암모니아(NH3)를 사용하며, NOx에 대한 선택도가 매우 우수할 뿐만 아니라 산소가 존재하는 경우에도 NOx와 암모니아 사이의 반응이 촉진되는 장점이 있다. 암모니아(NH3)와 NOx의 환원반응은 아래 화학식 1과 같다.
The SCR catalyst uses ammonia (NH3) as a reducing agent for purifying NOx, and has an excellent selectivity to NOx and also promotes the reaction between NOx and ammonia even in the presence of oxygen. The reduction reaction of ammonia (NH3) and NOx is represented by the following chemical formula 1.

[화학식 1][Chemical Formula 1]

2NH3 + 2O2 -> N20 + 3H202NH 3 + 2O 2 -> N 2 0 + 3H 2 O

4NH3 + 302 -> 2N2 + 6H2O4NH 3 + 30 2 -> 2N 2 + 6H 2 O

4NH3 + 5O2 -> 4NO + 6H2O
4NH3 + 5O2 -> 4NO + 6H2O

SCR촉매의 NOx 정화성능을 일정수준 이상으로 유지하기 위해 SCR촉매의 전단부에 배치되는 도징모듈(DOSING MODULE)을 통해 액상의 우레아(요소; UREA)를 배기가스에 분사하고, 분사된 우레아의 증발 및 분해에 따라 생성되는 암모니아를 취득하여 SCR촉매의 내부에 암모니아의 저장량을 유지시킨다.In order to maintain the NOx purifying performance of the SCR catalyst above a predetermined level, liquid urea (UREA) is injected into the exhaust gas through a dosing module (DOSING MODULE) disposed at the front end of the SCR catalyst and the evaporation of the injected urea And ammonia generated by decomposition is obtained to maintain the amount of ammonia stored in the SCR catalyst.

도징모듈은, 배기파이프에 장착되어 엔진으로부터 배출되는 배기가스에 함유된 NOx를 저감하기 위한 요소수를 배기파이프 내부를 향해 분사하는 장치이다. 적절한 요소수 분사는 NOx를 저감하여 배기규제를 만족시킬 수 있으나, 도징모듈에 열해 또는 볼밸브, 밸브 시트의 마모로 인해 우레아 분사량이 일정하지 못할 경우, 배출가스의 NOx가 증가 된다. 도징모듈에는, 우레아를 분사하기 위한 인젝터, 인젝터를 냉각하기 위한 냉각수챔버가 형성된 하우징이 포함된다. The dosing module is a device mounted on the exhaust pipe and injecting urea water for reducing NOx contained in the exhaust gas discharged from the engine toward the inside of the exhaust pipe. Proper urea injection can reduce NOx to meet exhaust regulations, but if the urea injection volume is not constant due to wear on the ball valve or valve seat, the NOx of the exhaust gas increases. The dosing module includes an injector for injecting urea, and a housing having a cooling water chamber for cooling the injector.

한편, DPF 재생 후 바로 엔진이 정지되면, 냉각수 펌프가 정지되고, 냉각수챔버로 유입되었던 냉각수가 정체된다. 이때, DPF 재생으로 인하여 도징모듈 전단으로 높은 온도의 배기가스가 유입되는바, 도 1에 도시된 바와 같이, 냉각수챔버(1) 내부에 정체된 냉각수(2)가 인젝터로부터 열을 전달받아 끊게 된다. 즉, 냉각수챔버(1) 내부에 기체(3)가 생성된다. On the other hand, when the engine is stopped immediately after the DPF regeneration, the cooling water pump is stopped and the cooling water that has flowed into the cooling water chamber is stagnated. At this time, due to the DPF regeneration, exhaust gas having a high temperature flows into the front end of the dosing module. As shown in FIG. 1, the stagnated cooling water 2 in the cooling water chamber 1 receives heat from the injector and is cut off . In other words, the base body 3 is formed inside the cooling water chamber 1.

배기가스의 온도가 적정치 이내로 내려갈 동안 기체생성은 지속 된다. 이에 따라서, 액체가 아닌 기체로 냉각수챔버 내부가 채워질 여지가 있다. 이러한 경우, 인젝터에 배기가스의 온도가 전달되고, 인젝터에 열해가 발생 된다.
Gas production continues while the temperature of the exhaust gas falls within a certain range. Accordingly, there is room for the inside of the cooling water chamber to be filled with a gas other than the liquid. In this case, the temperature of the exhaust gas is delivered to the injector, and the injector is thermally damaged.

대한민국 공개특허공보 제10-2014-0055171호(2014.05.09.)Korean Patent Laid-Open Publication No. 10-2014-0055171 (2014.05.09.)

이에 상기와 같은 점을 감안하여 발명된 본 발명의 목적은, DPF 재생 직후 엔진이 정지됨으로써, 도징모듈 내부에 냉각수가 정체되더라도, 도징모듈 내부에 생성된 기체를 냉각수챔버로부터 배출하여 인젝터 열해를 방지하는 도징모듈을 제공하는 것이다.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention, which has been developed in view of the above, to provide a fuel injection control apparatus and a fuel injection control method, And the like.

위와 같은 목적을 달성하기 위한 본 발명의 도징모듈은, NOx를 저감하도록 배기파이프에 장착된 SCR촉매 전단에 우레아를 분사하는 인젝터와, 인젝터 및 우레아를 수용하는 하우징과, 하우징에 냉각수를 유출입시키는 냉각수호스를 포함하는 도징모듈에 있어서, 냉각수호스는, 하우징 보다 높은 위치에서 냉각수에 포함된 기체를 포집하는 포집부를 포함한다.
To achieve the above object, the dosing module of the present invention includes an injector for injecting urea into a front end of an SCR catalyst mounted on an exhaust pipe so as to reduce NOx, a housing for accommodating the injector and the urea, In the dosing module including the hose, the cooling water hose includes a collecting portion for collecting the gas contained in the cooling water at a position higher than the housing.

위와 같은 본 발명의 도징모듈에 따르면, DPF 재생 직후와 같이, 배기가스의 온도가 높은 상태에서, 엔진 회전이 정지되어 냉각수 유동이 멈춘 상태에서도, 도징모듈에 형성된 냉각수챔버 내부에는 항상 액상의 냉각수가 채워지게 되므로, 인젝터 냉각효율이 상승되는 효과가 있다. 궁극적으로 시동 정지 후 인젝터에 가해지는 열이 냉각수로 방출되므로, 인젝터의 열해 발생 확률이 감소된다.
According to the dosing module of the present invention, even when the engine is stopped and the flow of the cooling water is stopped in a state where the temperature of the exhaust gas is high as immediately after the DPF regeneration, the cooling water in the liquid- So that the injector cooling efficiency is increased. Ultimately, since the heat applied to the injector is released to the cooling water after the start-up stop, the probability of occurrence of the heat-generating failure of the injector is reduced.

도 1은 종래 도징모듈의 작동 예시 단면도,
도 2는 본 발명의 일실시예의 도징모듈의 사시도 및 분해 사시도,
도 3은 본 발명의 일실시예의 도징모듈의 작동 예시 단면도,
도 4는 도 2의 도징모듈의 냉각수호스연결 상태도이다.1 is a cross-sectional view illustrating an operation example of a conventional dosing module,
2 is a perspective view and an exploded perspective view of a dosing module according to an embodiment of the present invention,
3 is a cross-sectional view of an exemplary operating example of the dosing module of one embodiment of the present invention,
4 is a cooling water hose connection state diagram of the dosing module of FIG.

본 발명의 실시예를 첨부 도면을 참조하여 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 내지 도 4에 도시된 바와 같이, 본 발명의 도징모듈은, NOx를 저감하도록 배기파이프에 장착된 SCR촉매 전단에 우레아(R)를 분사하는 인젝터(100)와, 인젝터(100) 및 우레아(R)를 수용하는 하우징(200)과, 하우징(200)에 냉각수를 유출입시키는 냉각수호스(300)를 포함하는 도징모듈에 있어서, 냉각수호스(300)는, 하우징(200) 보다 높은 위치에서 냉각수에 포함된 기체를 포집하는 포집부(310)를 포함한다. 포집부(310)는, 'U' 형상으로 만곡 형성되고 일측이 하우징(200)에 연결된 것을 특징으로 한다. 2 to 4, the dosing module of the present invention includes an injector 100 for injecting urea R to a front end of an SCR catalyst mounted on an exhaust pipe so as to reduce NOx, an injector 100 for injecting urea R, And a cooling water hose 300 for allowing the cooling water to flow in and out of the housing 200. The cooling water hose 300 is disposed at a position higher than the housing 200, And a collecting unit 310 for collecting the gas contained in the gas. The collecting part 310 is curved in a U shape and one side is connected to the housing 200.

냉각수를 펌핑하고, 냉각수를 하우징(200)으로 압송하는 냉각수펌프 및, 일측은 냉각수펌프와 연결되고, 타측은 포집부(310)와 연결된 냉각수 배관(320)을 더 포함한다. 냉각수 배관(320)은, 냉각수 배관(320)의 윗 방향을 향해 만곡된 만곡부위(321)가 형성된다.A cooling water pump for pumping the cooling water and feeding the cooling water to the housing 200 and a cooling water pipe 320 connected to the cooling water pump at one side and the collecting part 310 at the other side. The cooling water pipe (320) is formed with a curved portion (321) bent toward the upper side of the cooling water pipe (320).

하우징(200)에는, 인젝터(100)와 열교환하도록 냉각수가 유동하는 냉각수챔버(210)가 형성된다. 냉각수챔버(210)는 하우징(200) 상측에 형성된다. 하우징(200)에는, 냉각수챔버(210)와 냉각수호스(300)를 연결하는 냉각수커넥터(220)가 장착된다. In the housing 200, a cooling water chamber 210 through which cooling water flows to exchange heat with the injector 100 is formed. The cooling water chamber 210 is formed on the upper side of the housing 200. A cooling water connector 220 for connecting the cooling water chamber 210 and the cooling water hose 300 is mounted on the housing 200.

냉각수커넥터(220)는, 냉각수를 상기 냉각수챔버(210)로 유입 또는 배출시키고, 선단이 하늘을 향하도록 냉각수챔버(210)에 비스듬하게 장착된다. 냉각수커넥터(220)에는, 냉각수가 냉각수챔버(210)로 유입되는 유입포트(221) 및, 냉각수가 냉각수챔버(210)로부터 배출되는 배출포트(222)가 형성된다. 유입포트(221) 및 배출포트(222)에 각각 냉각수호스(300)가 연결된다. 각각의 냉각수 사이에 우레아(R)가 외부로부터 하우징(200)으로 공급되는 우레아 라인(R.L.)이 위치된다. 냉각수커넥터(220)는, 지면과 반대방향을 향해 돌출되도록 하우징(200)에 비스듬하게 장착된다.The cooling water connector 220 is installed at an oblique angle with respect to the cooling water chamber 210 so that the cooling water is introduced into or discharged from the cooling water chamber 210 and the tip thereof is directed toward the sky. The cooling water connector 220 is formed with an inlet port 221 through which the cooling water flows into the cooling water chamber 210 and a discharge port 222 through which the cooling water is discharged from the cooling water chamber 210. The cooling water hose 300 is connected to the inlet port 221 and the outlet port 222, respectively. A urea line R.L. is disposed between each of the cooling water and into which the urea R is supplied from the outside to the housing 200. The cooling water connector 220 is mounted obliquely to the housing 200 so as to protrude in a direction opposite to the ground.

위와 같이 구성되는 본 발명의 도징모듈에 따르면, DPF 재생 직후와 같은, 배기가스가 고온인 상태에서, 엔진 회전 정지로 냉각수 유동이 멈춰 냉각수가 정체되더라도, 냉각수가 끓어 생성된 기체는, 냉각수챔버(210)의 내측 상면, 선단이 하늘을 향하도록 냉각수챔버(210)에 장착된 냉각수커넥터(220)를 타고 냉각수호스(300)로 유입되고, 결과적으로, 포집부(310)에 포집된다. 액상의 냉각수에 비하여 냉각수가 상변화된 기체는 액상의 냉각수보다 밀도가 작아 상승하기 때문이다. 이로 인하여, 급격한 냉각수의 액상에서 기상으로의 상변화에 따른 인젝터(100) 열화가 방지된다.According to the dosing module of the present invention configured as described above, even if the cooling water stops flowing due to engine stoppage in the state where the exhaust gas is at a high temperature just after the DPF regeneration, the generated cooling water is boiled and the generated gas flows into the cooling water chamber 210 and the cooling water connector 220 mounted on the cooling water chamber 210 so that the front end of the cooling water hose 300 is directed toward the sky. This is because the density of the gas in which the cooling water is phase-changed is lower than that of the liquid-phase cooling water. As a result, deterioration of the injector 100 due to a phase change from the liquid phase to the gas phase of the abrupt cooling water is prevented.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

100: 인젝터 200: 하우징
210: 냉각수챔버 220: 냉각수커넥터
221: 유입포트 222: 배출포트
300: 냉각수호스 310: 포집부
320: 냉각수 배관 321 : 만곡부위
R: 우레아 R.L.: 우레아 라인100: Injector 200: Housing
210: Cooling water chamber 220: Cooling water connector
221: inlet port 222: outlet port
300: cooling water hose 310: collecting part
320: cooling water piping 321: curved portion
R: Urea RL: Urea line

Claims (10)

NOx를 저감하도록 배기파이프에 장착된 SCR촉매 전단에 우레아를 분사하는 인젝터와, 상기 인젝터 및 상기 우레아를 수용하는 하우징과, 상기 하우징에 냉각수를 유입 또는 출입시키는 냉각수호스를 포함하는 도징모듈에 있어서,
상기 냉각수호스는,
상기 하우징 보다 높은 위치에서 상기 냉각수에 포함된 기체를 포집하는 포집부를 포함하는 도징모듈.
An injector for injecting urea into a front end of an SCR catalyst mounted on an exhaust pipe so as to reduce NOx; a housing for accommodating the injector and the urea; and a cooling water hose for introducing coolant into or out of the housing,
The cooling water hose,
And a collecting unit for collecting the gas contained in the cooling water at a position higher than the housing.
제1항에 있어서,
상기 포집부는, 'U' 형상으로 만곡 형성되고 일측이 상기 하우징에 연결된 도징모듈.
The method according to claim 1,
The collection module is curved in a U-shape and one side is connected to the housing.
제2항에 있어서,
상기 냉각수를 펌핑하고, 상기 냉각수를 상기 하우징으로 압송하는 냉각수펌프; 및
일측은 상기 냉각수펌프와 연결되고, 타측은 상기 포집부와 연결된 냉각수 배관을 더 포함하는 도징모듈.
3. The method of claim 2,
A cooling water pump for pumping the cooling water and feeding the cooling water to the housing; And
Wherein the cooling water pipe is connected to the cooling water pump at one side and the cooling water pipe is connected to the other side at the other side.
제3항에 있어서,
상기 냉각수 배관은, 상기 냉각수 배관의 윗 방향을 향해 만곡된 만곡부위가 형성된 도징모듈.
The method of claim 3,
Wherein the cooling water pipe has a curved portion curved toward the upper side of the cooling water pipe.
제1항에 있어서,
상기 하우징은,
상기 인젝터와 열교환하도록 상기 냉각수가 유동하는 냉각수챔버를 형성하고,
상기 냉각수챔버는 상기 하우징에 상측에 형성된 도징모듈.
The method according to claim 1,
The housing includes:
Forming a cooling water chamber through which the cooling water flows to exchange heat with the injector,
And the cooling water chamber is formed on the upper side of the housing.
제5항에 있어서,
상기 하우징에는,
상기 냉각수챔버와 상기 냉각수호스를 연결하는 냉각수커넥터가 장착된 도징모듈.
6. The method of claim 5,
In the housing,
And a cooling water connector for connecting the cooling water chamber and the cooling water hose.
제6항에 있어서,
상기 냉각수커넥터에는,
상기 냉각수가 상기 냉각수챔버로 유입되는 유입포트; 및
상기 냉각수가 상기 냉각수챔버로부터 배출되는 배출포트가 형성된 도징모듈.
The method according to claim 6,
In the cooling water connector,
An inlet port through which the cooling water flows into the cooling water chamber; And
And a discharge port through which the cooling water is discharged from the cooling water chamber.
제6항에 있어서,
상기 유입포트 및 상기 배출포트에 각각 상기 냉각수호스가 연결된 도징모듈.
The method according to claim 6,
And the cooling water hose is connected to the inlet port and the outlet port, respectively.
제6항에 있어서,
상기 냉각수커넥터는,
지면과 반대방향을 향해 돌출되도록 상기 하우징에 비스듬하게 장착된 도징모듈.
The method according to claim 6,
The cooling water connector
And is mounted obliquely to the housing so as to protrude in a direction opposite to the ground.
배기파이프를 향해 우레아를 분사하는 인젝터;
상기 인젝터를 냉각하는 냉각수가 유동하고, 상기 인젝터 상단에 위치되도록 형성된 냉각수챔버;
상기 냉각수를 상기 냉각수챔버로 유입 또는 배출시키고, 선단이 하늘을 향하도록 상기 냉각수챔버에 비스듬하게 장착된 냉각수커넥터; 및
상기 냉각수커넥터로 상기 냉각수를 공급하며, 상기 냉각수에 포함된 기체를 포집하는 포집부가 구비된 냉각수호스를 포함하는 도징모듈.An injector for injecting the urea toward the exhaust pipe;
A cooling water chamber formed so that cooling water for cooling the injector flows and is positioned at an upper end of the injector;
A cooling water connector having the cooling water introduced into or discharged from the cooling water chamber and obliquely mounted in the cooling water chamber so that its tip is directed toward the sky; And
And a cooling water hose that supplies the cooling water to the cooling water connector and includes a collecting part for collecting the gas contained in the cooling water.
KR1020150019508A 2015-02-09 2015-02-09 The dosing module KR20160097616A (en)

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