KR20070037135A - System for preventing differential pressure pipe from clogging in catalyzed particulate filter system for diesel engine - Google Patents

System for preventing differential pressure pipe from clogging in catalyzed particulate filter system for diesel engine Download PDF

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KR20070037135A
KR20070037135A KR1020050092389A KR20050092389A KR20070037135A KR 20070037135 A KR20070037135 A KR 20070037135A KR 1020050092389 A KR1020050092389 A KR 1020050092389A KR 20050092389 A KR20050092389 A KR 20050092389A KR 20070037135 A KR20070037135 A KR 20070037135A
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South Korea
Prior art keywords
differential pressure
pressure pipe
heater
soot
diesel engine
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KR1020050092389A
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Korean (ko)
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정철화
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기아자동차주식회사
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Priority to KR1020050092389A priority Critical patent/KR20070037135A/en
Publication of KR20070037135A publication Critical patent/KR20070037135A/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
    • F01N3/02—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
    • F01N3/0232—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 removing incombustible material from a particle filter, e.g. ash
    • 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
    • F01N3/027—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 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
    • F01N3/02—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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters

Abstract

디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치가 개시된다. 개시된 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치는, 차압 파이프가 구비된 CPF와; 상기 차압 파이프 내에 설치되어 상기 차압 파이프 내부에 퇴적되는 수트(soot)를 주기적으로 가열하는 히터와; 상기 히터의 작동을 단속하는 히터컨트롤러와; 상기 히터컨트롤러를 제어하는 ECU와; 상기 히터에 전원을 공급하기 위한 배터리;를 포함하는 것을 그 특징으로 한다. Disclosed is a differential pressure pipe blockage preventing device employed in a soot purifier of a diesel engine vehicle. The differential pressure pipe blockage preventing device employed in the smoke purification apparatus of the disclosed diesel engine vehicle includes: a CPF having a differential pressure pipe; A heater installed in the differential pressure pipe and periodically heating a soot deposited in the differential pressure pipe; A heater controller for intermittent operation of the heater; An ECU controlling the heater controller; It characterized in that it comprises a; battery for supplying power to the heater.

본 발명에 따르면, 차압 파이프의 막힘에 의한 부정확한 수트(soot) 량 계측은 불필요한 재생 진입으로 연료소모 과다 및 오일 열화 등의 문제점을 방지할 수 있어, 연료소모를 줄일 수 있고, 오일 열화를 방지할 수 있으며, 결국 상품성을 향상시킬 수 있는 이점이 있다.According to the present invention, the incorrect soot amount measurement due to the clogging of the differential pressure pipe can prevent problems such as excessive fuel consumption and oil deterioration due to unnecessary regeneration, thereby reducing fuel consumption and preventing oil deterioration. There is an advantage that can be improved in the end, the marketability.

수트(soot), CPF, 히터 Soot, CPF, Heater

Description

디젤엔진의 매연정화장치에 채용된 차압 파이프 막힘 방지장치{SYSTEM FOR PREVENTING DIFFERENTIAL PRESSURE PIPE FROM CLOGGING IN CATALYZED PARTICULATE FILTER SYSTEM FOR DIESEL ENGINE}DIFFERENTIAL PRESSURE PIPE FROM CLOGGING IN CATALYZED PARTICULATE FILTER SYSTEM FOR DIESEL ENGINE}

도 1은 일반적인 디젤엔진 차량의 매연정화장치인 CPF의 구성을 개략적으로 나타내 보인 사시도.1 is a perspective view schematically showing the configuration of a CPF that is a smoke purification device of a general diesel engine vehicle.

도 2는 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치의 구성을 개략적으로 나타내 보인 도면.2 is a view schematically showing a configuration of a differential pressure pipe blockage preventing device employed in a soot purification device of a diesel engine vehicle according to the present invention.

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

21. 차압 파이프21. Differential Pressure Pipe

22. 히터22. Heater

31. ECU31.ECU

32. 히터 컨트롤 단자32. Heater Control Terminal

41. 배터리41. Battery

51. 히터컨트롤러51. Heater Controller

본 발명은 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치에 관한 것으로서, 보다 상세하게는 수트(soot)의 퇴적을 막아 파이프의 막힘이 방지되도록 개선된 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치에 관한 것이다.The present invention relates to a differential pressure pipe clogging prevention device employed in a soot purification device of a diesel engine vehicle, and more particularly, to a smoke purification device of a diesel engine vehicle improved to prevent clogging of a pipe by preventing the deposition of soot. A differential pressure pipe clogging prevention device is employed.

매연정화장치인 CPF(Catalyzed Particulate Filter)는 경유차에서 배출되는 입자상물질(PM, 매연), 일산화탄소(CO)와 미연소 탄화수소(HC) 등의 유해물질이 포함된 배기가스를 촉매가 코팅된 세라믹 필터를 통해 포집 제거하며, 엔진 배기가스 열에 의해 연속 재생되는 촉매필터 방식의 매연 저감장치이다.CPF (Catalyzed Particulate Filter), a soot purifier, is a ceramic filter coated with catalyst to exhaust gas containing harmful substances such as particulate matter (PM, soot), carbon monoxide (CO) and unburned hydrocarbon (HC) emitted from diesel cars. It is a catalyst filter type soot reduction device that is collected through the removal, and continuously regenerated by the engine exhaust heat.

이 CPF는 차량의 입자상물질(PM; Particulate Matters) 규제를 만족시키고, 구조가 단순하며, 관리가 간편하고, 제품 크기가 머플러 수준으로 설치 공간 확보가 용이하다. 또한 낮은 배기가스 온도에서 필터 재생이 되어 시내 구간 운행 차에 적용이 가능하며 강제 재생 방식에서 사용되는 각종 전기, 기계 장치가 필요 없다.The CPF meets the PM (Particulate Matters) regulations of the vehicle, is simple in structure, easy to manage, and has a muffler level of product size, making it easy to secure installation space. In addition, the filter is regenerated at low exhaust gas temperature, so it can be applied to cars operating in the city section and does not need various electric and mechanical devices used in the forced regeneration method.

이와 같은 CPF가 도 1에 개략적으로 도시되어 있다.Such a CPF is schematically illustrated in FIG. 1.

도시된 바와 같이, CPF(10)는 배기가스 통로를 이루는 하우징(11)과, 이 하우징(11)에 각각 설치된 DPF(Diesel Particulate Filter)(12) 및 DOC(Diesel Oxidation Catalyst)(14)와, 이들 DPF(12)와 DOC(14)의 전후로 하우징에 설치된 후단용 차압 파이프(13)와, 상기 DOC(14)의 전방으로 설치된 전단용 차압 파이프(15)를 포함하여 구성된다.As shown, the CPF 10 includes a housing 11 constituting an exhaust gas passage, a diesel particulate filter (DPF) 12 and a diesel oxidation catalyst (DOC) 14 installed in the housing 11, respectively, It comprises a rear differential pressure pipe 13 provided in the housing before and after these DPFs 12 and DOC 14, and the shear differential pressure pipe 15 provided in front of the DOC 14.

상기 DPF(12)는 배기가스의 입자상물질을 포집하여 재생하는 기능을 가진 필 터이다. 그리고 재생 조건은 입자상물질이 필터에 포집되면 DPF(12) 전, 후단의 차압이 발생하여 이 차압이 일정조건 이상이 되면 재생을 시작한다. The DPF 12 is a filter having a function of collecting and regenerating particulate matter of exhaust gas. The regeneration condition is that when the particulate matter is collected in the filter, a differential pressure is generated before and after the DPF 12, and regeneration is started when the differential pressure is above a predetermined condition.

그런데, 이 차압을 검출하기 위한 예컨대, 상기 전단용 차압 파이프(15)의 입구나 내부에 수트(soot)가 과다하게 퇴적되면 차압신호에 오류가 발생하고, 수트(soot) 량을 오검출 하게 된다. However, when a soot is excessively deposited at the inlet or the inside of the shear differential pressure pipe 15 for detecting the differential pressure, an error occurs in the differential pressure signal, and the amount of soot is incorrectly detected. .

또한 이렇게 오검출된 정보에 의해 상기 DPF(12)의 재생이 과다 발생할 경우 연비 및 오일열화에 악영향을 끼친다. In addition, if excessive regeneration of the DPF 12 occurs due to the misdetected information, it adversely affects fuel economy and oil degradation.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출된 것으로서, 파이프 내부에 퇴적되는 수트(soot)를 주기적으로 가열 연소시켜 파이프의 막힘이 방지되도록 한 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, the differential pressure pipe clogging employed in the smoke purification device of the diesel engine vehicle to prevent the blockage of the pipe by periodically heating and burning the soot (soot) deposited inside the pipe. The object is to provide a prevention device.

상기와 같은 목적을 달성하기 위한 본 발명의 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치는, 차압 파이프가 구비된 CPF와; 상기 차압 파이프 내에 설치되어 상기 차압 파이프 내부에 퇴적되는 수트(soot)를 주기적으로 가열하는 히터와; 상기 히터의 작동을 단속하는 히터컨트롤러와; 상기 히터컨트롤러를 제어하는 ECU와; 상기 히터에 전원을 공급하기 위한 배터리;를 포함하는 것을 그 특징으로 한다. In order to achieve the above object, a differential pressure pipe blockage preventing device employed in a soot purification device of a diesel engine vehicle of the present invention includes a CPF having a differential pressure pipe; A heater installed in the differential pressure pipe and periodically heating a soot deposited in the differential pressure pipe; A heater controller for intermittent operation of the heater; An ECU controlling the heater controller; It characterized in that it comprises a; battery for supplying power to the heater.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세히 설 명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2에는 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치의 구성을 개략적으로 나타낸 구성도가 도시되어 있다. Figure 2 is a schematic diagram showing the configuration of the differential pressure pipe blockage preventing device employed in the smoke purification device of the diesel engine vehicle according to the present invention.

도면을 참조하면, 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치는, 차압 파이프(21)가 구비된 CPF와, 이 차압 파이프 (21) 내에 설치되어 차압 파이프(21) 내부에 퇴적되는 수트(soot)를 주기적으로 가열하는 히터(22)와, 이 히터(22)의 작동을 단속하는 히터컨트롤러(51)와, 이 히터컨트롤러(51)를 제어하는 제어기인 ECU(31)와, 상기 히터(22)에 전원을 공급하기 위한 배터리(41)를 포함하여 구성된다.Referring to the drawings, the differential pressure pipe blockage preventing device employed in the soot purifying apparatus of the diesel engine vehicle according to the present invention is a CPF provided with a differential pressure pipe 21, and the differential pressure pipe 21 is provided in the differential pressure pipe 21; Heater 22 that periodically heats the soot deposited inside the heater, a heater controller 51 that controls the operation of the heater 22, and an ECU that is a controller that controls the heater controller 51 ( 31 and a battery 41 for supplying power to the heater 22.

그리고 상기 차압 파이프(21)는 도 1에서 전술한 바와 같이 CPF의 DOC 전방에 설치된 전단용 차압 파이프를 포함한다.The differential pressure pipe 21 includes a shear differential pressure pipe installed in front of the DOC of the CPF as described above with reference to FIG. 1.

또한 상기 히터(22)는 전기 히터 방식으로 이루어지고 도 2에 도시된 바와 같이, 차압 파이프(21)에 돌출되어 설치된다.In addition, the heater 22 is made of an electric heater method, as shown in Figure 2, is provided to protrude to the differential pressure pipe 21.

그리고 상기 히터컨트롤러(51)는 단속스위치와, 이를 작동시키는 솔레노이드 밸브를 포함하여 구성된다.The heater controller 51 includes an interrupt switch and a solenoid valve for operating the heater switch 51.

한편, 도 2에서 설명되지 않은 참조부호 32는 히터 컨트롤 단자를 나타내 보인 것이다.Meanwhile, reference numeral 32, which is not described in FIG. 2, indicates a heater control terminal.

상기한 바와 같은 구성을 갖는 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치의 작용을 설명하면 다음과 같다.Referring to the operation of the differential pressure pipe blockage preventing device employed in the smoke purification device of the diesel engine vehicle according to the present invention having the configuration as described above are as follows.

설명에 앞서, 디젤 EURO-4 차량에 적용 중인 CPF 시스템에 있어서, 가장 중 요한 2 가지 과정은 첫째, CPF 내부에 포집된 수트(soot) 량을 검출하는 과정과, 둘째, 포집된 수트(soot)를 재생이라는 과정을 통해서 잘 태워내는 과정이라 하겠다.Prior to the description, in a CPF system applied to a diesel EURO-4 vehicle, the two most important processes are firstly the process of detecting the amount of soot trapped inside the CPF, and secondly, the soot collected. It is a process of burning well through the process of regeneration.

그리고 차압 파이프의 막힘에 의한 부정확한 수트(soot) 량 계측은 불필요한 재생 진입으로 연료소모 과다 및 오일 열화 등의 문제점을 유발하게 된다.In addition, incorrect soot amount measurement due to clogging of the differential pressure pipe causes problems such as excessive fuel consumption and oil deterioration due to unnecessary regeneration.

따라서 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치는, 전기 히터 가열 방식으로 차압 파이프(21) 내에 쌓인 수트(soot)를 주기적으로 연소시켜 차압호스 막힘을 방지한다.Accordingly, the differential pressure pipe blockage preventing device employed in the smoke purification device of the diesel engine vehicle according to the present invention periodically prevents the differential pressure hose blockage by periodically burning a soot accumulated in the differential pressure pipe 21 by an electric heater heating method.

이를 구체적으로 설명한다.This will be described in detail.

도면을 다시 참조하면, 상기 차압 파이프(21) 내부에 전기 방식의 히터(22)를 설치하여 차압 파이프(21) 내부에 퇴적되는 수트(soot)를 주기적으로 가열 연소시켜 막힘을 방지한다.Referring back to the drawings, an electric heater 22 is installed inside the differential pressure pipe 21 to periodically heat and burn soot deposited in the differential pressure pipe 21 to prevent clogging.

그리고 상기 차압 파이프(21) 보다 조금 돌출되게 히터(22)를 설치함으로써, 차압 파이프(21) 내부의 수트(soot) 퇴적뿐만 아니라, 이 차압 파이프(21)의 입구부의 수트(soot) 퇴적을 동시에 방지한다.By installing the heater 22 so as to protrude slightly from the differential pressure pipe 21, not only soot deposition in the differential pressure pipe 21 but also soot deposition in the inlet portion of the differential pressure pipe 21 are simultaneously performed. prevent.

상술한 바와 같이 본 발명에 따른 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치는 다음과 같은 효과를 갖는다.As described above, the differential pressure pipe blockage preventing device employed in the smoke purification device of the diesel engine vehicle according to the present invention has the following effects.

차압 파이프의 막힘에 의한 부정확한 수트(soot) 량 계측은 불필요한 재생 진입으로 연료소모 과다 및 오일 열화 등의 문제점을 방지할 수 있어, 연료소모를 줄일 수 있고, 오일 열화를 방지할 수 있으며, 결국 상품성을 향상시킬 수 있다.Inaccurate soot amount measurement due to clogging of the differential pressure pipe can prevent problems such as excessive fuel consumption and oil deterioration due to unnecessary regeneration, which can reduce fuel consumption and prevent oil deterioration. It can improve the marketability.

본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 보호 범위는 첨부된 특허청구범위에 의해서만 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (5)

차압 파이프가 구비된 CPF와;A CPF having a differential pressure pipe; 상기 차압 파이프 내에 설치되어 상기 차압 파이프 내부에 퇴적되는 수트(soot)를 주기적으로 가열하는 히터와;A heater installed in the differential pressure pipe and periodically heating a soot deposited in the differential pressure pipe; 상기 히터의 작동을 단속하는 히터컨트롤러와;A heater controller for intermittent operation of the heater; 상기 히터컨트롤러를 제어하는 ECU와;An ECU controlling the heater controller; 상기 히터에 전원을 공급하기 위한 배터리;를 포함하는 것을 특징으로 하는 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치.And a battery for supplying power to the heater. The differential pressure pipe blockage preventing device of the diesel engine vehicle, characterized in that it comprises a soot purification device. 제1항에 있어서,The method of claim 1, 상기 차압 파이프는 상기 CPF에 구비된 DOC 전방에 설치된 전단용 차압 파이프를 포함하여 된 것을 특징으로 하는 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치.The differential pressure pipe is a differential pressure pipe blockage preventing device employed in the soot purifier of the diesel engine vehicle, characterized in that it comprises a differential pressure pipe for shear provided in front of the DOC provided in the CPF. 제2항에 있어서,The method of claim 2, 상기 히터는 상기 전단용 차압 파이프에 돌출되어 설치된 것을 특징으로 하는 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치.The heater is a differential pressure pipe blockage preventing device employed in the smoke purification device of a diesel engine vehicle, characterized in that protruding to the differential pressure pipe for shearing. 제1항에 있어서,The method of claim 1, 상기 히터컨트롤러는 단속스위치와, 이를 작동시키는 솔레노이드 밸브를 포함하여 된 것을 특징으로 하는 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치.The heater controller is a differential pressure pipe blockage preventing device employed in a soot purifier of the diesel engine vehicle, characterized in that it comprises a control switch and a solenoid valve for operating the same. 제1항에 있어서,The method of claim 1, 상기 히터는 전기 히터 방식으로 이루어진 것을 특징으로 하는 디젤엔진 차량의 매연정화장치에 채용된 차압 파이프 막힘 방지장치.The heater is a differential pressure pipe blockage preventing device employed in a soot purifier of the diesel engine vehicle, characterized in that the electric heater system.
KR1020050092389A 2005-09-30 2005-09-30 System for preventing differential pressure pipe from clogging in catalyzed particulate filter system for diesel engine KR20070037135A (en)

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