KR20130020246A - Reducing agent freezing prevention device - Google Patents

Reducing agent freezing prevention device Download PDF

Info

Publication number
KR20130020246A
KR20130020246A KR1020110082753A KR20110082753A KR20130020246A KR 20130020246 A KR20130020246 A KR 20130020246A KR 1020110082753 A KR1020110082753 A KR 1020110082753A KR 20110082753 A KR20110082753 A KR 20110082753A KR 20130020246 A KR20130020246 A KR 20130020246A
Authority
KR
South Korea
Prior art keywords
reducing agent
cover
latent heat
prevention device
freezing
Prior art date
Application number
KR1020110082753A
Other languages
Korean (ko)
Other versions
KR101294063B1 (en
Inventor
류동명
류부열
함창호
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020110082753A priority Critical patent/KR101294063B1/en
Publication of KR20130020246A publication Critical patent/KR20130020246A/en
Application granted granted Critical
Publication of KR101294063B1 publication Critical patent/KR101294063B1/en

Links

Images

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
    • 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
    • F01N2610/1486—Means to prevent the substance from freezing
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: A reducing agent freezing prevention device is provided to reduce fuel consumption of a vehicle because of no additional energy and to stably prevent freeze of urea solution semipermanently and repetitively without affecting driving condition of the vehicle. CONSTITUTION: A reducing agent freezing prevention device comprises a reducer tank(100), a latent heat material case(400), and a latent heat material. The reducer tank is comprised by filling a reducer(105) in the inside. The latent heat material case is located inside the reducer tank in order to be sunk in the reducer. The latent heat material is filled in the inside of the latent heat material case and includes a higher frozen point than the frozen point of the reducer.

Description

환원제 동결 방지장치{REDUCING AGENT FREEZING PREVENTION DEVICE}Reducing agent freeze protection device {REDUCING AGENT FREEZING PREVENTION DEVICE}

본 발명은 배기가스에 포함된 질소산화물을 제거하기 위한 요소수가 충진된 요소수탱크 내부에 수용된 요소수의 동결을 방지할 수 있는 환원제 동결 방지장치에 관한 것이다.The present invention relates to a reducing agent freezing prevention device capable of preventing freezing of urea water contained in the urea water tank filled with urea water for removing nitrogen oxide contained in the exhaust gas.

현재 상용디젤 분야에서 배기가스규제 관련하여 새로운 후처리 기술이 도입되고 있다. 이것은 EGR기술과 요소수(UREA)-SCR기술이 알려져 있다.At present, new post-treatment technologies are being introduced in the field of commercial diesel with respect to exhaust gas regulation. This is known as EGR technology and Urea-SCR technology.

상기 UREA-SCR(SELECTIVE CATALYTIC REDUCTION)에 대하여 좀더 구체적으로 설명하면, 디젤엔진의 배기가스(HC, CO, PM, NOX)중에서 NOX를 저감하는 기술로서 배기가스 중 NOX와 NH3(암모니아)를 반응시켜 N2와 H2O로 환원시키는 기술이다.In more detail, the UREA-SCR (SELECTIVE CATALYTIC REDUCTION) is described as a technique for reducing NOX in exhaust gas (HC, CO, PM, NOX) of a diesel engine by reacting NOX and NH3 (ammonia) in exhaust gas. It is a technology to reduce to N2 and H2O.

특히, 배기관을 통해서 나오는 배기가스 중 NOX의 량을 센서를 통해서 확인하고 ECU에서 요소수 분사량을 결정하여 촉매 전단 배기관에 요소수를 분사하며 요소수가 NH3로 분리되어 촉매로 NOX와 함께 공급되는 것으로서 촉매안에서 NH3와 NOX가 반응하여 NOX를 제거하게 되는 방법이다.In particular, the amount of NOX in the exhaust gas from the exhaust pipe is checked through the sensor, the urea water injection amount is determined in the ECU, the urea water is injected into the catalyst front end exhaust pipe, the urea water is separated into NH3, and the catalyst is supplied with NOX as a catalyst. NH3 and NOX react inside to remove NOX.

이와 관련되어 종래에는 요소수의 동결방지를 위해 두 가지 구조가 제안되었다. 첫째로, 코일스프링에 의한 히팅방식은 요소수 탱크의 온도센서를 통해 ECU에서 릴레이를 통하여 전원을 공급하고 이를 제어해 주는 방법이나 코일스프링 설치에 따르는 문제점이 있고 내지 릴레이를 통해 별도의 전원을 공급해야 하는 문제점이 있다.In this regard, conventionally, two structures have been proposed for preventing freezing of urea water. First, the heating method by the coil spring has a problem in that the ECU supplies power through the relay through the temperature sensor of the urea water tank and controls it, or there is a problem in installing the coil spring, or supplies a separate power through the relay. There is a problem that must be done.

두 번째로 인테이크(INTAKE) 즉 흡입공기를 이용한 히팅방식은 요소수 탱크 내부 온도가 -11 DEG 이하시 요소수 온도센서에 의해 정보가 DCU로 전달되고 DCU와 엔진 ECU간 CAN 통신에 의해 정보를 엔진 ECU에서 인식하여 ECU에서 솔레노이드 밸브에 신호를 주어 밸브를 오픈시키게 되면 상기 밸브를 통해 고온의 흡기공기가 요소수 파이프를 따라 흘러 상기 흡기공기에 의해 요소수가 가열되는 구조이다. Secondly, intake (heating method using intake air), when urea water tank internal temperature is below -11 DEG, information is transferred to DCU by urea water temperature sensor and engine information is transmitted by CAN communication between DCU and engine ECU. When the ECU recognizes the ECU and signals the solenoid valve to open the valve, the hot intake air flows along the urea water pipe through the valve, and the urea water is heated by the intake air.

그러나 상기 인테이크측 압축 흡입공기 방식은 흡입공기를 콤프레셔로 압축하기 때문에 온도가 올라가는 것인데 여기서 밸브를 통해 요소수 탱크와 파이프에 흡입공기를 공급하게 되면 그 늘어난 부피만큼 압력이 떨어져서 온도도 같이 떨어지고 기대하는 효과도 떨어진다.However, the temperature of the intake side compressed suction air is increased because the suction air is compressed by the compressor. When the suction air is supplied to the urea water tank and the pipe through the valve, the pressure drops as much as the increased volume and the temperature decreases. It is also less effective.

본 발명의 목적은 별도의 에너지 소비가 없어서 차량의 연료소모를 줄이고, 차량의 운전조건에 영향을 주지 않으며 반영구적으로 반복적으로 요소수의 동결을 안정적으로 방지할 수 있는 환원제 동결 방지장치를 제공하는 것이다.An object of the present invention is to provide a reducing agent freezing prevention device that can reduce the fuel consumption of the vehicle because there is no separate energy consumption, does not affect the driving conditions of the vehicle and can stably prevent freezing of urea water repeatedly and semi-permanently. .

상술한 바와 같이 본 발명에 따른 환원제 동결 방지장치는, 환원제가 담긴 환원제탱크, 상기 환원제에 잠기도록 상기 환원제탱크 안에 배치되는 잠열재케이스, 및 상기 잠열재케이스 내부에 충진되고, 상기 환원제의 어는점보다 그 어는점이 높은 잠열재를 포함한다. As described above, the reducing agent freezing prevention apparatus according to the present invention includes a reducing agent tank containing a reducing agent, a latent heat case disposed in the reducing agent tank so as to be immersed in the reducing agent, and the inside of the latent heat case, and the freezing point of the reducing agent. It contains latent heat of high freezing point.

상기 잠열재의 어는점은 상기 환원제의 어는점보다 1 내지 10도 높은 것을 특징으로 한다. The freezing point of the latent heat material is characterized in that 1 to 10 degrees higher than the freezing point of the reducing agent.

상기 환원제는 요소수이며, 상기 잠열재는 도데칸(dodedane) 또는 트리데칸(tridecane) 인 것을 특징으로 한다. The reducing agent is urea water, and the latent heat material is characterized in that the dodecane (dodedane) or tridecane (tridecane).

상기 환원제탱크에서 환원제인젝터로 상기 환원제를 펌핑하는 펌핑모듈을 더 포함하고, 상기 펌핑모듈은 상기 환원제탱크의 하부에 놓이고, 내외부로 상기 환원제가 통하는 홀이 형성되는 하우징, 및 상기 하우징 내부의 상기 환원제를 환원제인젝터로 펌핑하는 환원제펌프를 포함하고, 상기 환원제케이스는 상기 하우징 내부에 배치된다. And a pumping module for pumping the reducing agent from the reducing agent tank to a reducing agent injector, wherein the pumping module is disposed under the reducing agent tank and has a hole through which the reducing agent communicates with the inner and outer sides, and the inside of the housing. Reducing agent pump for pumping a reducing agent to the reducing agent injector, wherein the reducing agent case is disposed inside the housing.

상기 환원제케이스는 그 외측면은 상기 환원제와 접하고, 그 내측면은 상기 잠열재와 접하는 제1커버, 및 상기 제1커버에 부착되고, 상기 제1커버 사이에 상기 환원제가 충진되는 제2커버를 포함하고, 상기 제1커버와 상기 제2커버는 그 가장자리가 서로 밀봉된다. The reducing agent case has an outer side thereof in contact with the reducing agent, and an inner side thereof having a first cover in contact with the latent heat material, and a second cover attached to the first cover, wherein the reducing agent is filled between the first covers. And the edges of the first cover and the second cover are sealed to each other.

상기 제1커버 또는 제2커버는 돌기와 홈구조로 형성되어 상기 환원제와 상기 잠열재가 열교환하는 면적을 증가시킨다. The first cover or the second cover is formed in a protrusion and groove structure to increase the area in which the reducing agent and the latent heat exchanger.

상기 환원제인젝터는 질소산화물을 저감시키는 컨버터의 상류측의 배기라인에 설치되는 것을 특징으로 한다. The reducing agent injector is characterized in that installed in the exhaust line upstream of the converter for reducing the nitrogen oxides.

상기 잠열재는 상변화를 거치는 동안에 흡열 또는 방열하여 상기 환원제가 어는점에 도달하는 것을 방지하거나 늦춘다. The latent heat absorbs or dissipates during the phase change to prevent or slow down the reducing agent from reaching a freezing point.

상기 제1커버와 상기 제2커버는 그 가장자리가 서로 용접되어 밀봉되는 것을 특징으로 한다. Edges of the first cover and the second cover are welded to each other and sealed.

상기 제1커버와 상기 제2커버는 그 가장자리가 볼팅되어 밀봉된다. The first cover and the second cover are sealed with their edges bolted.

이러한 목적을 달성하기 위한 본 발명에 따라서, 우레아수용액과 같은 환원제가 충진된 환원제탱크 내부에 잠열재를 배치함으로써, 차량의 연료소모를 증가시키지 않고, 운전조건에 영향을 미치지 않으면서, 반영구적으로 환원제의 동결을 안정적으로 방지할 수 있다. According to the present invention for achieving this object, by placing a latent heat in the reducing agent tank filled with a reducing agent such as urea aqueous solution, reducing agent semi-permanently without increasing the fuel consumption of the vehicle, without affecting the driving conditions Can be stably prevented from freezing.

도 1은 일반적인 환원제 분사시스템의 개략적인 구성도이다.
도 2는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재의 특성을 보여준다.
도 3은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재의 종류와 특성을 보여준다.
도 4는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재케이스의 사시도이다.
도 5는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 환원제탱크와 펌핑모듈을 보여주는 측면도이다.
도 6은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 환원제탱크와 펌핑모듈을 보여주는 단면도이다.
도 7은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재케이스가 배치된 상태를 보여주는 일부 평면도이다. 1 is a schematic configuration diagram of a general reducing agent injection system.
Figure 2 shows the characteristics of the latent heat applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.
Figure 3 shows the type and characteristics of the latent heat applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.
4 is a perspective view of a latent heat case applied to a reducing agent freezing prevention apparatus according to an embodiment of the present invention.
5 is a side view showing a reducing agent tank and a pumping module applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.
6 is a cross-sectional view showing a reducing agent tank and a pumping module applied to a reducing agent freezing prevention apparatus according to an embodiment of the present invention.
7 is a partial plan view showing a state in which a latent heat case is applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.

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 일반적인 환원제 분사시스템의 개략적인 구성도이다. 1 is a schematic configuration diagram of a general reducing agent injection system.

도 1을 참조하면, 환원제 분사시스템은 환원제탱크(100), 펑션모듈(110), 펌핑모듈(120), 환원제라인(130), 인젝터(190), 배기라인(195), 컨버터(180), 배기센서(160), 온도센서(170), 환원제제어부(140), 및 차량제어부(150)를 포함한다. Referring to FIG. 1, a reducing agent injection system includes a reducing agent tank 100, a function module 110, a pumping module 120, a reducing agent line 130, an injector 190, an exhaust line 195, a converter 180, An exhaust sensor 160, a temperature sensor 170, a reducing agent control unit 140, and a vehicle control unit 150.

상기 환원제탱크(100) 내부에는 우레아 수용액과 같은 환원제(105)가 충진된다. 상기 환원제라인(130)은 상기 환원제탱크(100)에서 상기 인젝터(190)로 환원제를 공급하기 위한 통로를 제공하고, 상기 펌핑모듈(120)은 상기 환원제탱크(100)에 충진된 환원제(105)를 상기 인젝터(190)로 펌핑한다. Reducing agent 105, such as urea aqueous solution is filled in the reducing agent tank 100. The reducing agent line 130 provides a passage for supplying a reducing agent from the reducing agent tank 100 to the injector 190, and the pumping module 120 is a reducing agent 105 filled in the reducing agent tank 100 Is pumped into the injector 190.

상기 펑션모듈(110)은 상기 환원제탱크(100)에 충진된 환원제(105)의 온도, 레벨, 필터 기능을 수행하고, 동결방지나 히팅 기능을 더 포함할 수 있다. The function module 110 may perform a temperature, a level, a filter function of the reducing agent 105 filled in the reducing agent tank 100, and may further include a freezing prevention or heating function.

상기 환원제제어부(140)는 상기 차량제어부(150)의 제어하에 상기 배기센서(160)와 상기 온도센서(170)의 신호를 기초로, 상기 펑션모듈(110), 상기 펌핑모듈(120), 및 상기 인젝터(190)를 제어하여 상기 배기라인(195) 안으로 설정된 환원제(105)를 안정적으로 분사한다. The reducing agent controller 140 is based on the signals of the exhaust sensor 160 and the temperature sensor 170 under the control of the vehicle controller 150, the function module 110, the pumping module 120, and The injector 190 is controlled to stably inject the reducing agent 105 set into the exhaust line 195.

상기 컨버터(180)는 상기 인젝터(190)에서 분사된 환원제(UREA)를 이용하여 배기가스에 포함된 질소산화물을 질소와 물로 전환한다. The converter 180 converts nitrogen oxides contained in the exhaust gas into nitrogen and water using a reducing agent UREA injected from the injector 190.

상기 환원제(105)로 사용되는 우레아수용액(UREA solution)은 무색, 무취, 무독, 비가연, 강염기성(PH 10)이며, 물에 32.5%비율로 혼합되며, 어는 점은 섭씨 -11.5℃이며, 어는점에서 부피는 11% 팽창한다. The urea solution (UREA solution) used as the reducing agent 105 is colorless, odorless, non-toxic, non-flammable, strongly basic (PH 10), mixed in water at a rate of 32.5%, freezing point is -11.5 ℃, At freezing point the volume expands 11%.

따라서, 상기 우레아수용액이 빙결될 수 있는 저온에서도 안정적으로 환원제를 분사하는 시스템이 필요하다. Therefore, there is a need for a system for stably spraying a reducing agent even at low temperatures where the urea solution may freeze.

한편, 상기 우레아수용액을 히팅하기 위한 히터나 별도의 히팅시스템은 전기에너지 등을 소모하고, 화재의 위험뿐만 아니라 별도의 부품으로 제조비용과 유지보수 비용이 증가한다. On the other hand, the heater or a separate heating system for heating the urea solution consumes electrical energy, etc., as well as the risk of fire increases the manufacturing cost and maintenance cost as a separate component.

도 2는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재의 특성을 보여준다. Figure 2 shows the characteristics of the latent heat applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.

도 2를 참조하면, 잠열재는 액체에서 고체로 상변화하거나 고체에서 액체로 상변화하는 경우 흡열 또는 방열하는 물질이며, 이러한 상변화는 융점에서 형성된다. Referring to FIG. 2, the latent heat material is a material that absorbs or dissipates when a phase change from a liquid to a solid or a phase from a solid to a liquid occurs, and the phase change is formed at the melting point.

도 3은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재의 종류와 특성을 보여준다. Figure 3 shows the type and characteristics of the latent heat applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.

잠열재로는 유기물과 무기물 계통이 존재하며, 잠열재의 선택은 사용하고자 하는 온도 영역에 융점이 존재하며, 상변화(Phase Change)시 높은 잠열을 보유하는 재료(material)를 선택해야 한다. The latent materials include organic and inorganic systems, and the selection of latent materials has a melting point in the temperature range to be used, and a material having high latent heat during phase change should be selected.

본 발명의 실시예에서, 상기 우레아수용액의 어는점이 섭씨-11도라는 것을 고려하면, -10도 내지 -1도의 범위에 어는점이 있고, 높은 잠열을 보유한 재료로써, 도데칸(dodecane), 또는 트리데칸(Tridecane)이 선택된다. In an embodiment of the present invention, considering that the freezing point of the urea aqueous solution is -11 degrees Celsius, it has a freezing point in the range of -10 degrees to -1 degrees, and has a high latent heat, dodecane, or tree Deccan (Tridecane) is selected.

도 3을 참조하면, 후보 잠열재로써 인데칸, 도데칸, 트리데칸, 데트리데칸 등이 있으며, 도데칸과 트리데칸의 융점은 섭씨 -10도 내지 -1도의 범위에 있으며, 잠열량이 비교적 높다. 따라서, 본 발명의 실시예에 따른 환원제의 동결을 방지하는 잠열재로 선택된다. Referring to FIG. 3, candidate latent materials include indecan, dodecane, tridecane, detridecane, and the like. The melting point of dodecane and tridecane is in the range of -10 degrees Celsius to -1 degrees Celsius, and the amount of latent heat is relatively high. high. Therefore, it is selected as a latent heat material to prevent freezing of the reducing agent according to the embodiment of the present invention.

도 4는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재케이스의 사시도이다. 4 is a perspective view of a latent heat case applied to a reducing agent freezing prevention apparatus according to an embodiment of the present invention.

도 4를 참조하면, 잠열재케이스(400)는 제1커버(400a)와 제2커버(400b)를 포함하고, 상기 제1,2커버(400a, 400b) 사이에 잠열재(410)가 충진된다.Referring to FIG. 4, the latent heat case 400 includes a first cover 400a and a second cover 400b, and a latent heat material 410 is filled between the first and second covers 400a and 400b. do.

상기 제1커버(400a)와 상기 제2커버(400b)가 서로 마주하게 배치되고, 이들의 가장자리를 서로 용접함으로서, 상기 제1,2커버(400a, 400b)가 서로 밀봉되어 결합된다.The first cover 400a and the second cover 400b are disposed to face each other, and the edges of the first cover 400a and the second cover 400b are welded to each other to seal the first and second covers 400a and 400b to each other.

상기 제1,2커버(400a, 400b)의 외측에는 돌기와 홈구조(420)가 형성되어, 상기 잠열재케이스(400) 내부에 충진된 잠열재(410)와 외측의 환원제가 서로 열교환되는 면적을 증가시킨다. Protrusions and groove structures 420 are formed on the outer sides of the first and second covers 400a and 400b to form an area in which the latent heat material 410 filled in the latent heat material case 400 and the reducing agent on the outside are exchanged with each other. Increase.

본 발명의 실시예에서는, 상기 제1,2커버(400a, 400b)를 서로 용접하여 결합하였으나, 상기 제1,2커버(400a, 400b)의 가장자리를 관통하는 볼트와 이에 결합되는 너트를 이용하여 서로 밀봉시킬 수 있다. In the exemplary embodiment of the present invention, the first and second covers 400a and 400b are joined to each other by welding, but the bolts penetrating the edges of the first and second covers 400a and 400b and nuts are coupled thereto. Can be sealed together.

도 5는 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 환원제탱크와 펌핑모듈을 보여주는 측면도이다. 5 is a side view showing a reducing agent tank and a pumping module applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.

도 5를 참조하면, 상기 환원제탱크(100)의 하부에는 상기 펌핑모듈(120)이 배치되고, 상기 펌핑모듈(120)은 상기 환원제탱크(100)의 내부에 배치되는 하우징(500)을 포함한다.Referring to FIG. 5, the pumping module 120 is disposed below the reducing agent tank 100, and the pumping module 120 includes a housing 500 disposed inside the reducing agent tank 100. .

상기 하우징(500)에는 내외부로 환원제가 통하는 홀(510)이 형성되고, 상기 홀(510)을 통해서 상기 하우징(500) 내부로 유입된 환원제는 펌프(600)를 통해서 인젝터(190)로 공급된다. The housing 500 has a hole 510 through which a reducing agent passes in and out, and the reducing agent introduced into the housing 500 through the hole 510 is supplied to the injector 190 through the pump 600. .

도 6은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 환원제탱크와 펌핑모듈을 보여주는 단면도이다. 6 is a cross-sectional view showing a reducing agent tank and a pumping module applied to a reducing agent freezing prevention apparatus according to an embodiment of the present invention.

도 6을 참조하면, 상기 환원제탱크(100) 내부에는 환원제(105)가 충진되어, 설정된 레벨을 갖고 있으며, 상기 환원제탱크(100)의 하부에는 펌핑모듈(120)이 배치된다.Referring to FIG. 6, a reducing agent 105 is filled in the reducing agent tank 100 to have a set level, and a pumping module 120 is disposed below the reducing agent tank 100.

상기 펌핑모듈(120)은 상기 환원제탱크(100) 내부에 설치되는 상기 하우징(500) 및 상기 하우징(500) 안으로 유입된 환원제를 분사하는 펌프(600)를 포함한다. The pumping module 120 includes the housing 500 installed inside the reducing agent tank 100 and a pump 600 for injecting the reducing agent introduced into the housing 500.

상기 펌프(600)의 상부에는 상기 잠열재케이스(400)가 배치되는데, 도시한 바와 같이, 상기 잠열재케이스(400)는 상기 하우징(500) 내부에 배치된다. The latent heat case 400 is disposed on an upper portion of the pump 600. As shown, the latent heat case 400 is disposed inside the housing 500.

상기 환원제탱크(100)의 내부에 충진된 환원제는 상기 하우징(500)의 홀(510)을 통해서 상기 하우징(500) 내부로 유입되고, 상기 하우징(500) 내부의 환원제는 상기 잠열재케이스(400)에 충진된 잠열재에 의해서 동결되지 않고, 상기 펌프(600)에 의해서 인젝터(190)로 공급된다. The reducing agent filled in the reducing agent tank 100 is introduced into the housing 500 through the hole 510 of the housing 500, and the reducing agent in the housing 500 is the latent heat case 400. It is supplied to the injector 190 by the pump 600 is not frozen by the latent heat material filled in the).

도 7은 본 발명의 실시예에 따른 환원제 동결 방지장치에 적용되는 잠열재케이스가 배치된 상태를 보여주는 일부 평면도이다. 7 is a partial plan view showing a state in which a latent heat case is applied to the reducing agent freezing prevention apparatus according to an embodiment of the present invention.

도 6 및 도 7을 참조하면, 상기 하우징(500) 내부에 상기 잠열재케이스(400)가 상하 방향으로 배치되고, 이들은 상기 펌핑모듈(120)을 중심으로 서로 간격을 두고 3개가 배치된다. 6 and 7, the latent heat storage case 400 is disposed in the housing 500 in an up and down direction, and three are arranged at intervals from each other around the pumping module 120.

따라서, 상기 잠열재케이스(400) 사이에 환원제는 빙결되지 않고, 상기 펌핑모듈(120)의 상기 펌프(600)로 용이하게 공급되는 구조를 갖는다. Therefore, the reducing agent is not frozen between the latent heat case 400, and has a structure that is easily supplied to the pump 600 of the pumping module 120.

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.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: 환원제탱크
105: 환원제
110: 펑션모듈
120: 펌핑모듈
130: 환원제라인
140: 환원제제어부
150: 차량제어부
160: 배기센서
170: 온도센서
180: 컨버터
190: 인젝터
195: 배기라인
400: 잠열재케이스
400a: 제1커버
400b: 제2커버
410: 잠열재
420: 돌기와 홈구조
500: 하우징
510: 홀
600: 펌프100: reducing agent tank
105: reducing agent
110: function module
120: pumping module
130: reducing agent line
140: reducing agent control unit
150: vehicle control unit
160: exhaust sensor
170: temperature sensor
180: converter
190: injector
195 exhaust line
400: latent heat case
400a: first cover
400b: second cover
410: latent heat
420: projection and groove structure
500: housing
510: hall
600: pump

Claims (10)

환원제가 담긴 환원제탱크;
상기 환원제에 잠기도록 상기 환원제탱크 안에 배치되는 잠열재케이스; 및
상기 잠열재케이스 내부에 충진되고, 상기 환원제의 어는점보다 그 어는점이 높은 잠열재; 를 포함하는 환원제 동결 방지장치. Reductant tank containing a reducing agent;
A latent heat case disposed in the reducing agent tank to be immersed in the reducing agent; And
A latent heat material filled in the latent heat material case and having a freezing point higher than a freezing point of the reducing agent; Reducing agent freezing prevention device comprising a. 제1항에서,
상기 잠열재의 어는점은 상기 환원제의 어는점보다 1 내지 10도 높은 것을 특징으로 하는 환원제 동결 방지장치. In claim 1,
The freezing point of the latent material is a reducing agent freezing prevention device, characterized in that 1 to 10 degrees higher than the freezing point of the reducing agent. 제2항에서,
상기 환원제는 요소수이며, 상기 잠열재는 도데칸(dodedane) 또는 트리데칸(tridecane) 인 것을 특징으로 하는 환원제 동결 방지장치. In claim 2,
The reducing agent is urea water, and the latent material is dodecane (dodedane) or tridecane (tridecane), reducing agent freeze protection device. 제1항에서,
상기 환원제탱크에서 환원제인젝터로 상기 환원제를 펌핑하는 펌핑모듈을 더 포함하고,
상기 펌핑모듈은 상기 환원제탱크의 하부에 놓이고, 내외부로 상기 환원제가 통하는 홀이 형성되는 하우징; 및
상기 하우징 내부의 상기 환원제를 환원제인젝터로 펌핑하는 환원제펌프; 를 포함하고,
상기 환원제케이스는 상기 하우징 내부에 배치되는 것을 특징으로 하는 환원제 동결 방지장치. In claim 1,
A pumping module for pumping the reducing agent from the reducing agent tank to a reducing agent injector,
The pumping module is placed in the lower portion of the reducing tank, the housing is formed in the hole through which the reducing agent passes through; And
A reducing agent pump for pumping the reducing agent inside the housing with a reducing agent injector; Including,
The reducing agent case is a reducing agent freezing prevention device, characterized in that disposed in the housing. 제1항에서,
상기 환원제케이스는,
그 외측면은 상기 환원제와 접하고, 그 내측면은 상기 잠열재와 접하는 제1커버; 및
상기 제1커버에 부착되고, 상기 제1커버 사이에 상기 환원제가 충진되는 제2커버; 를 포함하고,
상기 제1커버와 상기 제2커버는 그 가장자리가 서로 밀봉되는 것을 특징으로 하는 환원제 동결 방지장치. In claim 1,
The reducing agent case,
A first cover whose outer surface is in contact with the reducing agent and whose inner surface is in contact with the latent heat material; And
A second cover attached to the first cover and filled with the reducing agent between the first covers; Including,
Reducing agent freezing prevention device, characterized in that the edge of the first cover and the second cover is sealed to each other. 제5항에서,
상기 제1커버 또는 제2커버는 돌기와 홈구조로 형성되어 상기 환원제와 상기 잠열재가 열교환하는 면적을 증가시키는 것을 특징으로 하는 환원제 동결 방지장치. The method of claim 5,
The first cover or the second cover is formed of a protrusion and groove structure to reduce the freezing agent of the reducing agent, characterized in that to increase the area in which the reducing agent and the latent heat exchanger. 제4항에서,
상기 환원제인젝터는 질소산화물을 저감시키는 컨버터의 상류측의 배기라인에 설치되는 것을 특징으로 하는 환원제 동결 방지장치. 5. The method of claim 4,
And the reducing agent injector is installed in an exhaust line upstream of the converter for reducing nitrogen oxides. 제1항에서,
상기 잠열재는 상변화를 거치는 동안에 흡열 또는 방열하여 상기 환원제가 어는점에 도달하는 것을 방지하거나 늦추는 것을 특징으로 하는 환원제 동결 방지장치. In claim 1,
And the latent heat absorbing material is heat absorbed or dissipated during the phase change to prevent or slow down the reducing agent from reaching a freezing point. 제5항에서,
상기 제1커버와 상기 제2커버는 그 가장자리가 서로 용접되어 밀봉되는 것을 특징으로 하는 환원제 동결 방지장치. The method of claim 5,
The first cover and the second cover is a reducing agent freezing prevention device, characterized in that the edge is welded to each other sealed. 제5항에서,
상기 제1커버와 상기 제2커버는 그 가장자리가 볼팅되어 밀봉되는 것을 특징으로 하는 환원제 동결 방지장치. The method of claim 5,
Reducing agent freezing prevention device, characterized in that the first cover and the second cover is sealed with its edge bolted.
KR1020110082753A 2011-08-19 2011-08-19 Reducing agent freezing prevention device KR101294063B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110082753A KR101294063B1 (en) 2011-08-19 2011-08-19 Reducing agent freezing prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110082753A KR101294063B1 (en) 2011-08-19 2011-08-19 Reducing agent freezing prevention device

Publications (2)

Publication Number Publication Date
KR20130020246A true KR20130020246A (en) 2013-02-27
KR101294063B1 KR101294063B1 (en) 2013-08-07

Family

ID=47898229

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110082753A KR101294063B1 (en) 2011-08-19 2011-08-19 Reducing agent freezing prevention device

Country Status (1)

Country Link
KR (1) KR101294063B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015147489A1 (en) * 2014-03-25 2015-10-01 (주)대동공업 Urea storage tank of selective catalytic reduction system having heat transfer member, and agricultural working vehicle having same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014580A (en) * 2016-05-13 2016-10-12 中国第汽车股份有限公司 Novel urea crystallization-prevention exhaust pipe used for diesel engine SCR system
DE102017217819A1 (en) * 2017-10-06 2019-04-11 Kautex Textron Gmbh & Co. Kg Liquid container for a motor vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11125113A (en) * 1997-10-23 1999-05-11 Denso Corp Exhaust emission control device for internal combustion engine
KR100859443B1 (en) 2007-04-16 2008-09-22 (주)모토닉 Dosing system
JP2009085565A (en) 2007-10-03 2009-04-23 Panasonic Corp Heat pump water heater
DE102008048798A1 (en) 2008-09-24 2010-03-25 Emitec Gesellschaft Für Emissionstechnologie Mbh Tank for a reducing agent with heating devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015147489A1 (en) * 2014-03-25 2015-10-01 (주)대동공업 Urea storage tank of selective catalytic reduction system having heat transfer member, and agricultural working vehicle having same

Also Published As

Publication number Publication date
KR101294063B1 (en) 2013-08-07

Similar Documents

Publication Publication Date Title
US8820059B1 (en) Mounting assembly for reductant injector with thermal isolation and sealing gasket
US7895829B2 (en) Exhaust purification device of engine
US20130000281A1 (en) Def pump mounted to tank
EP2538049B1 (en) Reductant delivery unit for selective catalytic reduction
US7966811B2 (en) Exhaust treatment system having a diverter valve
KR101305190B1 (en) Urea heating system and heating method thereof
EP3184770B1 (en) Dosing module
US20150115051A1 (en) Purge system for reductant delivery unit for a selective catalytic reduction system
JP4706627B2 (en) Engine exhaust purification system
KR101205234B1 (en) The urea tank for a diesel car
US20130000729A1 (en) Def pump and tank thawing system and method
KR101647959B1 (en) Heating structure, manufacturing method thereof and pump module having the same
KR101294063B1 (en) Reducing agent freezing prevention device
US20100114463A1 (en) System for cold starting machine
US11131228B2 (en) Method for preventing a risk of freezing in a reducing-agent feeding device of a selective catalytic reduction system
WO2015067158A1 (en) Reactant metering and conveying device of tail gas clean-up post-treatment system of internal-combustion engine
CN204716359U (en) For valve assembly and the after-treatment system of after-treatment system
KR20120118888A (en) Urea level-sender unit and urea storing and supplying apparatus
US20160177799A1 (en) Insulated Reductant Tank
JP6202600B2 (en) Control device, exhaust purification device for internal combustion engine, and control method for exhaust purification device
CN105443207A (en) Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle
CN210343455U (en) High-temperature-resistant electric liquid metering nozzle
WO2018075782A1 (en) Diesel exhaust fluid cooled reductant delivery unit for selective catalytic reduction systems
US20180128140A1 (en) Urea-water solution heating and cooling devices for construction equipment
EP2322774A1 (en) Apparatus for maintaining a urea solution in a liquid state for treatment of diesel exhaust

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20160729

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20180730

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20190729

Year of fee payment: 7