KR20030032106A - Catalyst converter apparatus - Google Patents

Catalyst converter apparatus Download PDF

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Publication number
KR20030032106A
KR20030032106A KR1020010062290A KR20010062290A KR20030032106A KR 20030032106 A KR20030032106 A KR 20030032106A KR 1020010062290 A KR1020010062290 A KR 1020010062290A KR 20010062290 A KR20010062290 A KR 20010062290A KR 20030032106 A KR20030032106 A KR 20030032106A
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KR
South Korea
Prior art keywords
carrier
catalyst
cold start
heat transfer
converter device
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KR1020010062290A
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Korean (ko)
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KR100475802B1 (en
Inventor
양일석
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현대자동차주식회사
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Priority to KR10-2001-0062290A priority Critical patent/KR100475802B1/en
Publication of KR20030032106A publication Critical patent/KR20030032106A/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
    • 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
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/04—Methods of control or diagnosing
    • F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor

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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: A substrate heating type catalyst converter apparatus is provided to prevent air contamination by activating the purifying function of the substrate even during the cold start of engine. CONSTITUTION: A catalyst converter apparatus is connected to an intermediate portion of an exhaust pipe, and includes a shroud case(1) containing a substrate(2) which is covered by a mat(3). The substrate includes an electric heater mounted within the substrate so that thin heat transfer plates(6,7) are arranged upright into a cross shape. The cylindrical substrate is cut into four arc pieces along the lengthwise direction, and arranged to tightly contact the electric heater at the cut surfaces of the substrate.

Description

엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치{Catalyst converter apparatus}Carrier-heated catalytic converter device for early activation of catalyst during cold start of engine

본 발명은 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치에 관한 것이다.The present invention relates to a carrier heating catalytic converter device for the early activation of the catalyst during engine cold start.

배기가스중에는 인체에 유해한 CO, HC 및 NOx 등의 성분이 다량으로 함유되어 있어 이를 그대로 대기로 방출하는 경우 대기오염을 유발하게 되므로, 배기파이프의 도중에 촉매컨버터를 설치하여 상기 유해 성분들을 촉매의 산화·환원작용에 의해 각기 무해한 CO2, H2O, 및 N2로 변환하여 배출토록 하고 있다.The exhaust gas contains a large amount of components such as CO, HC, and NOx, which are harmful to the human body, and if it is released into the atmosphere, air pollution is caused. Therefore, a catalytic converter is installed in the middle of the exhaust pipe to oxidize the catalyst. · They are converted into harmless CO 2 , H 2 O, and N 2 by the reduction action.

도 5에 종래의 일반적인 촉매컨버터장치(20)를 도시하였는 바, 시라우드 케이스(21)내에 마치 벌집모양의 격자상 구조로 형성된 촉매(22, 담체)를 수용하여 배기가스가 촉매(22)를 통과하면서 촉매(22) 표면에 코팅되어 있는 귀금속, 예를들면 백금과 로듐 및 파라듐으로 구성된 귀금속과의 반응으로 유해가스를 산환·환원시킨 후 대기중에 방출하게 된다.5 shows a conventional general catalytic converter device 20, the catalyst 22 (carrier) formed in the shroud case 21 in the shape of a honeycomb lattice structure is contained in the exhaust gas. While passing through the reaction, the noble metal coated on the surface of the catalyst 22, for example, platinum, noble metal composed of rhodium and palladium, converts and reduces harmful gas and releases it into the atmosphere.

그런데 촉매가 정화기능을 발휘하기 위해서는 활성화가 이루어져야 하는데 촉매가 제기능을 발휘하기 위한 활성화 온도는 약 300 ~ 400℃ 이상에 도달해야하는 것으로 알려져 있다.By the way, the catalyst must be activated in order to exhibit a purification function, the activation temperature for the catalyst to function properly is known to reach about 300 ~ 400 ℃ or more.

그러나 엔진의 시동초기 냉간 상태에서는 배기가스 온도가 낮고 실린더헤드 및 배기매니폴드도 냉각되어 있기 때문에 배출되는 배기가스에 의해 담체(촉매)가 가열되어 활성화 온도에 도달하기까지에는 어느정도 시간이 걸리게 되므로써 촉매컨버터장치(20)가 제기능을 발휘하지 못해 냉간시동 상태하에서는 정화처리되지 않은 배기가스가 대량으로 배출되므로써 대기오염의 중요한 요인이 되고 있다. 이 때문에 담체의 용량을 증대시키거나 실린더헤드와 담체와의 거리를 가깝게 유지토록 하고 있으나, 이러한 해결방안은 가격이 상승하고 엔진의 레이아웃성을 해치게 되어 그다지 바람직스럽지 않다는 점이 지적되고 있다.However, since the exhaust gas temperature is low in the initial cold state of the engine and the cylinder head and exhaust manifold are also cooled, it takes some time for the carrier (catalyst) to be heated by the exhaust gas to reach the activation temperature. Since the converter device 20 does not function properly, large amounts of exhaust gas which is not purified under a cold start state are discharged, which is an important factor of air pollution. For this reason, the capacity of the carrier is increased or the distance between the cylinder head and the carrier is kept close. However, it is pointed out that this solution is not preferable because the price increases and the layout of the engine is compromised.

이에 본 발명은 상기한 점을 감한하여 제안한 것으로서 그의 목적으로 하는 것은Therefore, the present invention is proposed by subtracting the above point, and its object is to

엔진의 냉간시동 초기에 조기에 촉매를 활성화시켜 배기가스 정화효율을 향상하는 담체 가열식 촉매컨버터장치를 제공하는 데 있다.It is to provide a carrier heating catalytic converter device for activating the catalyst early in the cold start of the engine to improve the exhaust gas purification efficiency.

상기한 목적을 달성하기 위하여 본 발명은The present invention to achieve the above object

배기파이프의 도중에 접속되며, 시라우드 케이스내에 촉매(담체)를 수용하여, 그 촉매를 통과하여 지나는 배기가스를 정화하는 촉매컨버터장치에 있어서,In the catalytic converter device which is connected in the middle of the exhaust pipe, the catalyst (carrier) is contained in the shroud case and purifies the exhaust gas passing through the catalyst.

상기 담체 내부에 전기적으로 발열되는 전열기구가 삽입된 것을 특징으로 한다.An electric heating device which is electrically heated inside the carrier is inserted.

그리고 상기 전열기구는 얇은 두께의 전열판을 세워서 +자 모양으로 교차시킨 형상으로 배열되고, 상기 원통형상의 담체를 +자상으로 길이방향을 따라 4개의 호형편으로 절개하여 형성한 +자상 경계면에 밀착하도록 삽입된다.The heat transfer mechanism is arranged in a shape in which a thin heat transfer plate is erected and crossed in a + -shape, and is inserted in close contact with a + -shaped boundary formed by cutting the cylindrical carrier into four arc-shaped pieces along the longitudinal direction in a + shape. do.

도 1은 본 발명에 의한 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치의 정단면도1 is a front sectional view of a carrier heating catalytic converter device for early activation of a catalyst during engine cold start according to the present invention.

도 2는 본 발명에 의한 전열기구를 나타내는 도면2 is a view showing a heat transfer mechanism according to the present invention.

도 3은 본 발명 장치의 A-A 단면도Figure 3 is a cross-sectional view A-A of the device of the present invention

도 4는 본 발명의 담체를 +자형으로 4등분한 형상을 나타내는 도면4 is a view showing a quadrant of the carrier of the present invention in a + shape

도 5는 종래기술5 is a prior art

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1 : 시라우드 케이스 2 : 담체(촉매)1: shroud case 2: carrier (catalyst)

3 : 매트 4 : 경계면3: Matt 4: Interface

5 : 전열기구 6,7: 전열판5: electric heating apparatus 6,7: electric heating plate

8,9: 연결부 10 : 촉매온도센서8,9: connection 10: catalyst temperature sensor

11 : 전자제어장치 Ⅴ : 밧데리전원11: Electronic control device Ⅴ: Battery power supply

이하 본 발명의 구성을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 냉간시동시 조기 촉매활성화를 위한 담체 가열식 촉매컨버터장치의 정단면도이고, 도 2는 본 발명에 의한 전열기구의 일실시예를 나타낸 도면이며, 도 3은 본 발명 장치의 A-A 단면도이다. 그리고 도 4는 본 발명의 담체를 +자형으로 4등분한 형상을 나타낸 도면이다.1 is a front sectional view of a carrier heating catalytic converter device for early catalyst activation during cold start according to the present invention, FIG. 2 is a view showing an embodiment of a heat transfer mechanism according to the present invention, and FIG. AA section. 4 is a view showing a quadrilateral shape of the carrier of the present invention in a + shape.

도면중 부호 1은 시라우드 케이스로서 배기파이프의 도중에 접속되며, 그 시라우드 케이스(1)의 내부에는 원통형의 격자상 담체(2)가 매트(3)에 싸여져 수용되어 있다.In the drawing, reference numeral 1 denotes a shroud case, which is connected in the middle of the exhaust pipe, and a cylindrical lattice carrier 2 is enclosed in the mat 3 and accommodated inside the shroud case 1.

상기한 격자상 담체(2)는 도 4에서와 같이 길이방향을 따라 +자상의 4조각으로 분할하여 각 분할면(2a)들을 다시 합침에 있어서 그 분할된 경계면(4)에 도 2에 도시하는 것과 같은 전열기구(5)를 내장하고 있다.The lattice carrier 2 is divided into four pieces in the shape of + in the longitudinal direction as shown in FIG. 4, and the respective divided surfaces 2a are shown in FIG. The same heat transfer mechanism 5 is incorporated.

전열기구(5)는 얇은 판상의 발열체인 전열판(6)(7)들이 +자를 이루도록 서로 교차해서 끼워져 있는 형상으로서 각 전열판(6)(7)들이 각기 연결부(8)(9)로부터 연장된 형태를 이루고 있다.The heat transfer mechanism 5 is a shape in which the heat transfer plates 6 and 7, which are thin plate-like heating elements, are intersected with each other to form a + -shape, and each heat transfer plate 6 and 7 extends from the connecting portions 8 and 9, respectively. To achieve.

+자형의 전열기구(5)는 그의 각 사분면 마다엔 담체(2)의 각 분할편(2a)들이 밀착하여 하나의 원통을 이루게되며, 그의 외주를 매트(3)가 감싸게 된다.In the + -shaped heat transfer mechanism 5, each of the divided pieces 2a of the carrier 2 is in close contact with each quadrant thereof to form a cylinder, and the outer periphery of the mat 3 is wrapped.

그리고 +자형 전열기구(5)는 밧데리전원(Ⅴ)에 접속되어 있다.The + -shaped heat transfer mechanism 5 is connected to the battery power source V. As shown in FIG.

이하 본 발명의 작동에 대하여 설명한다.Hereinafter, the operation of the present invention will be described.

엔진이 가동되면 촉매온도센서(10)로부터 담체(2, 촉매)의 온도를 측정하여 그 측정신호가 전자제어장치(11)에 보내진다.When the engine is operated, the temperature of the carrier 2 (catalyst) is measured from the catalyst temperature sensor 10, and the measurement signal is sent to the electronic controller 11.

전자제어장치(11)는 촉매온도센서(10)로부터 보내져온 온도정보가 촉매(담체)의 활성화 온도인 300 ~ 400℃, 예를들면 300℃에 미달하는 경우 전열기구(5)에 전원(Ⅴ)을 공급하여 발열시키도록 제어한다.The electronic controller 11 supplies power to the heating device 5 when the temperature information sent from the catalyst temperature sensor 10 is lower than 300 to 400 ° C, for example, 300 ° C, which is the activation temperature of the catalyst (carrier). ) To control the heat generation.

이에따라 전열기구(5)가 700℃ 이상으로 발열하여 담체(2)를 가열하게 되며, 담체(2)는 신속히 가열되어 활성화 온도에 도달하여 배기가스를 정화하게 되는 것이다.Accordingly, the heat transfer mechanism 5 generates heat above 700 ° C. to heat the carrier 2, and the carrier 2 is rapidly heated to reach an activation temperature to purify the exhaust gas.

시간이 경과하여 촉매온도센서(10)로부터 활성화 온도인 300℃ 이상이 검출되면 전자제어장치(11)는 전열기구(5)에의 전원공급을 차단하며, 담체(2)는 이후 고온의 배기가스온도에 의해 활성화 온도를 유지하게 되는 것이다.When time elapses, when the activation temperature of 300 ° C. or more is detected from the catalyst temperature sensor 10, the electronic controller 11 cuts off the power supply to the heat transfer mechanism 5, and the carrier 2 then has a high exhaust gas temperature. It is to maintain the activation temperature.

이상과 같은 본 발명은 배기가스 정화를 담당하는 담체(촉매)내에 전열기구를 매설하여 엔진의 냉간시동 초기 전열기구에 의해 신속히 담체를 활성화 온도로 상승시키는 것에 의해서, 배기가스를 다량으로 배출하므로써 환경 악화의 주요인으로 지목되는 엔진의 냉간시동시에도 담체의 정화기능을 조기에 활성화시킬 수 있어 대기오염 방지에 크게 효과가 있게 된다.The present invention as described above, by embedding the heat transfer mechanism in the carrier (catalyst) responsible for the exhaust gas purification by rapidly raising the carrier to the activation temperature by the cold start initial heat transfer mechanism of the engine, by exhausting a large amount of exhaust gas Cold start of the engine, which is the main cause of the deterioration, can activate the purification function of the carrier at an early stage, which is greatly effective in preventing air pollution.

Claims (5)

배기파이프의 도중에 접속되며, 시라우드 케이스내에 촉매(담체)를 수용하여, 그 촉매를 통과하여 지나는 배기가스를 정화하는 촉매컨버터장치에 있어서,In the catalytic converter device which is connected in the middle of the exhaust pipe, the catalyst (carrier) is contained in the shroud case and purifies the exhaust gas passing through the catalyst. 상기 담체 내부에 전기적으로 발열되는 전열기구가 삽입된 것을 특징으로 하는 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치.Carrier heating type catalytic converter device for the early activation of the catalyst during the cold start of the engine, characterized in that the heating device is electrically heated inside the carrier is inserted. 제 1 항에 있어서,The method of claim 1, 상기 전열기구는 얇은 두께의 전열판을 세워서 +자 형상으로 교차시킨 형상으로 배열되고, 상기 원통형상의 담체를 +자상으로 길이 방향을 따라 4개의 호형편으로 분할하여 형성한 +자형 경계면에 밀착하도록 삽입되는 것을 특징으로 하는 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치.The heat transfer mechanism is arranged in a shape in which a thin heat transfer plate is erected and intersected in a + shape, and inserted into close contact with a + shape boundary formed by dividing the cylindrical carrier into four arc shaped pieces along the longitudinal direction in a + shape. Carrier heating type catalytic converter device for the early activation of the catalyst during the engine cold start, characterized in that. 제 2 항에 있어서,The method of claim 2, 상기 전열기구는 엔진의 냉간시동초기 전자제어장치에 의해 작동이 제어되는 것을 특징으로 하는 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치.The heat transfer mechanism is a carrier heating catalyst converter device for the early activation of the catalyst during the engine cold start, characterized in that the operation is controlled by the cold start initial electronic control of the engine. 제 3 항에 있어서,The method of claim 3, wherein 상기 전자제어장치는 상기 담체의 온도를 검출하는 촉매온도센서로부터의 정보에 의해 전열기구를 제어하는 것을 특징으로 하는 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치.The electronic control device is a carrier heating catalyst converter device for the early activation of the catalyst during the engine cold start, characterized in that for controlling the heat transfer mechanism by the information from the catalyst temperature sensor for detecting the temperature of the carrier. 제 2 항에 있어서,The method of claim 2, 상기 담체는 매트에 의해 감싸져 보호되는 것을 특징으로 하는 엔진 냉간시동시 촉매의 조기 활성화를 위한 담체 가열식 촉매컨버터장치.The carrier is a carrier heating catalytic converter device for the early activation of the catalyst during the engine cold start, characterized in that the carrier is wrapped and protected by a mat.
KR10-2001-0062290A 2001-10-10 2001-10-10 Catalyst converter apparatus KR100475802B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100569966B1 (en) * 2004-09-08 2006-04-10 현대자동차주식회사 Apparatus to remove the particulate matters in exhaust pipes and controlling method thereof
KR101495249B1 (en) * 2010-12-21 2015-02-24 도요타 지도샤（주） Catalytic converter device

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Publication number Priority date Publication date Assignee Title
JPH0559939A (en) * 1991-06-19 1993-03-09 Ngk Spark Plug Co Ltd Catalytic exhaust emission control device with heater
JPH10196351A (en) * 1996-12-29 1998-07-28 Tokyo Gas Co Ltd Catalyst heater
KR19990021658U (en) * 1997-11-29 1999-06-25 정몽규 Exhaust catalyst self heating device
KR20000042278A (en) * 1998-12-24 2000-07-15 정주호 Catalytic converter of automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100569966B1 (en) * 2004-09-08 2006-04-10 현대자동차주식회사 Apparatus to remove the particulate matters in exhaust pipes and controlling method thereof
KR101495249B1 (en) * 2010-12-21 2015-02-24 도요타 지도샤（주） Catalytic converter device
US9017616B2 (en) 2010-12-21 2015-04-28 Toyota Jidosha Kabushiki Kaisha Catalytic converter

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