KR100448735B1 - Device for promoting activation of catalyst early by generating ultra high frequency according to temperature of catalyst and generating heat with vibration of catalyst atom - Google Patents

Device for promoting activation of catalyst early by generating ultra high frequency according to temperature of catalyst and generating heat with vibration of catalyst atom Download PDF

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KR100448735B1
KR100448735B1 KR1019970055802A KR19970055802A KR100448735B1 KR 100448735 B1 KR100448735 B1 KR 100448735B1 KR 1019970055802 A KR1019970055802 A KR 1019970055802A KR 19970055802 A KR19970055802 A KR 19970055802A KR 100448735 B1 KR100448735 B1 KR 100448735B1
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catalyst
temperature
exhaust gas
high frequency
ultra high
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KR1019970055802A
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Korean (ko)
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KR19990034275A (en
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김성은
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현대자동차주식회사
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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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus

Abstract

PURPOSE: A device for promoting activation of catalyst is provided to neutralize exhaust gas through catalyst from oxidation and reduction, and to prevent air pollution from harmful exhaust gas by heating catalyst quickly in cold starting and activating catalyst early. CONSTITUTION: A catalyst activation promoting device is composed of a catalyst(20) inserted and installed to an insulation cover(10), a temperature sensor(30) installed in the catalyst to detect temperature of the catalyst, a control unit(40) controlling connection or disconnection of a switch(50) according to temperature of the catalyst detected from the temperature sensor, and an ultra high frequency generator(60) formed in the inner periphery of the insulation cover outside the catalyst to generate ultra high frequency corresponding to the electric signals from the control unit. The catalyst is heated promptly, and activated early in cold starting. Thus, exhaust gas is neutralized through the catalyst, and exhaust gas purification efficiency is improved in cold starting.

Description

촉매 활성화 촉진장치Catalyst Activation Promoter

본 발명은 냉시동시 촉매 컨버터의 절연커버 내에서 전기적으로 극초단파를 발생시켜 촉매로부터 열을 발생시켜 조기에 가열되도록 하므로서 배기 정화 효율이 향상될 수 있도록 하는 촉매 활성화 촉진장치에 대한 것이다.The present invention relates to a catalyst activation facilitating apparatus for generating exhaust heat electrically from the catalyst in the insulation cover of the catalytic converter during cold start so that the exhaust purification efficiency can be improved while being heated early.

일반적으로 차량 엔진에서 배출되는 배기가스로부터 유해한 성분을 일단 제거시킨 후 보다 정화된 가스만이 대기로 방출될 수 있도록 하는 것이 촉매 컨버터이다.In general, it is a catalytic converter that removes harmful components from exhaust gas emitted from a vehicle engine, and then allows only purged gas to be released to the atmosphere.

이같은 촉매 컨버터는 통상 엔진의 배기 매니폴드 후방에서 배기 파이프 중간에 연결되는 것이 대부분인바 그 주요 구성으로는 도 2에서 보는바와 같이 크게 절연커버(1)와 촉매(2)로서 이루어져 배기 파이프를 통과하게 되는 배기가스가 촉매(2)를 지나면서 산화 또는 환원작용에 의해 중화되도록 하여 배기가 정화될 수 있도록 하는 것이다.This catalytic converter is usually connected to the middle of the exhaust pipe at the rear of the exhaust manifold of the engine. As a main configuration thereof, as shown in FIG. 2, the catalytic converter is composed of an insulation cover 1 and a catalyst 2 to pass through the exhaust pipe. The exhaust gas is neutralized by oxidation or reduction as it passes through the catalyst 2 so that the exhaust gas can be purified.

하지만 촉매(2)가 정상적인 정화작용을 하기 위해서는 촉매(2)가 일단 활성화되어야만 하는데 이렇게 촉매가 활성화되기 위해서는 촉매(2)가 일정 온도(약 300℃ 이상) 이상으로 가열이 되어야만 하는바 차량이 정상적으로 주행하는 동안에는 항상 활성화 온도상태를 유지하게 되므로 정화작용을 수행할 수가 있으나 냉간 시동시에는 촉매가 대단히 낮은 저온의 상태이고 엔진으로부터 배출되는 배기가스의 온도도 낮아 촉매가 활성화될 수 있는 적정 온도가 되기까지는 일정 시간을 기다려야만 하므로 시동이후 촉매의 활성화시점까지는 다량의 유해한 배기가스가 대기로 방출되면서 대기오염을 촉진시키게 되는 문제점이 있다.However, in order for the catalyst (2) to have a normal purifying action, the catalyst (2) must be activated once. In order for the catalyst to be activated, the catalyst (2) must be heated above a certain temperature (about 300 ° C. or more). It can be purged because it keeps the activation temperature at all times while driving. However, during cold start, the catalyst is at a very low temperature and the temperature of exhaust gas emitted from the engine is low, so the catalyst can be activated. Since it is necessary to wait for a certain time until the activation of the catalyst after starting a large amount of harmful exhaust gas is released into the atmosphere there is a problem that promotes air pollution.

이에 본 발명은 상기한 문제점을 시정 보완시키기 위한 것으로 엔진을 시동시 항상 촉매의 온도를 체크하여 촉매가 설정온도 이하를 유지하면 절연커버 내주면측의 극초단파 발생기로부터 극초단파를 발생시켜 촉매 원자의 진동으로 열을 발생시키면서 촉매가 가열되어 조기에 활성화될 수 있도록 하는데 본 발명의 주된 목적이 있다.Accordingly, the present invention is to compensate for the above problems, and when the engine is started, the temperature of the catalyst is always checked, and if the catalyst is kept below the set temperature, the microwave is generated from the microwave generator on the inner circumferential surface side of the insulation cover to generate heat by vibration of the catalyst atoms. The main object of the present invention is to allow the catalyst to be heated to be activated early while generating.

또한 본 발명은 냉간 시동시의 촉매 활성화를 촉진시켜 배기 정화 효율이 향상되도록 하는데 다른 목적이 있다.In another aspect, the present invention is to promote the catalyst activation during cold start to improve the exhaust purification efficiency.

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

촉매가 절연커버내에 삽입장착되는 구조에 있어서,In the structure in which the catalyst is inserted into the insulating cover,

상기한 촉매에 장착되어 촉매의 온도를 감지하는 온도센서와;A temperature sensor mounted on the catalyst to sense a temperature of the catalyst;

상기의 온도센서로부터 감지되는 촉매 온도에 따라 스위치의 접속을 단속하는 제어장치와;A control device for controlling the connection of the switch according to the catalyst temperature detected by the temperature sensor;

촉매 외주면측 절연커버 내주면에 형성되어 제어장치로부터의 전기적 신호에 의해 극초단파를 발생시키는 극초단파 발생기로서 구비되는 구성이 특징이다.It is characterized in that it is formed on the inner circumferential surface of the insulating cover of the catalyst outer circumferential surface and provided as a microwave generator for generating microwaves by an electrical signal from the control device.

도 1은 본 발명에 따른 일실시예 구조도1 is a structural diagram of an embodiment according to the present invention

도 2는 종래의 촉매 변환기 구조도2 is a schematic diagram of a conventional catalytic converter

※ 도면 중 주요 부분에 대한 부호의 설명※ Explanation of the code for the main part of the drawing

10 : 절연커버10: insulation cover

20 : 촉매20: catalyst

30 : 온도센서30: temperature sensor

40 : 제어장치40: controller

50 : 스위치50: switch

60 : 극초단파 발생기60: microwave generator

이를 첨부한 도면을 참조하여 보다 상세하게 설명하면 도 1은 본 발명에 따른 촉매 컨버터의 단면 구조를 도시한 것으로서, 도면부호 10은 절연 커버이고, 20은 촉매이다.Referring to this in more detail with reference to the accompanying drawings, Figure 1 shows a cross-sectional structure of the catalytic converter according to the present invention, 10 is an insulating cover, 20 is a catalyst.

상기한 촉매(20)에는 온도센서(30)가 부착되어 촉매(20)의 온도를 항상 감지토록 하며, 상기한 온도센서(30)는 제어장치(40)에 연결된다.The temperature sensor 30 is attached to the catalyst 20 so that the temperature of the catalyst 20 is always detected, and the temperature sensor 30 is connected to the control device 40.

제어장치(40)에서는 엔진 시동 신호가 입력시 상기의 온도센서(30)로부터 출력되는 촉매(20) 온도를 체크하며, 체크된 온도에 따라 스위치(50)의 접속을 단속한다.The controller 40 checks the temperature of the catalyst 20 output from the temperature sensor 30 when the engine start signal is input, and interrupts the connection of the switch 50 according to the checked temperature.

상기한 스위치(50)는 차량 배터리로부터 유도되는 전원을 온오프작동에 의해 접속이 단속되면서 촉매(20) 외주면측 절연커버(10)의 내주면으로 부착된 극초단파 발생기(60)와 연결된다.The switch 50 is connected to the microwave generator 60 attached to the inner circumferential surface of the insulating cover 10 on the outer circumferential surface side of the catalyst 20 while the power supply derived from the vehicle battery is interrupted by the on / off operation.

또한 상기한 극초단파 발생기(60)는 절연커버(10)와 촉매(20)간 절연커버(10)의 내주면 전체에 형성되어 스위치(50)로부터 유도되는 전원에 의해 극초단파를 발생시켜 극초단파가 촉매(20)를 투과하면서 촉매(20)내 원자를 진동시켜 원자의 운동 에너지에 의해 발생되는 열 에너지에 의해서 촉매(20)가 가열될 수 있도록 한다.In addition, the microwave generator 60 is formed on the entire inner circumferential surface of the insulating cover 10 between the insulating cover 10 and the catalyst 20 to generate microwaves by a power source derived from the switch 50, thereby generating the microwave 20. By oscillating the atoms in the catalyst 20 while passing through), the catalyst 20 can be heated by the thermal energy generated by the kinetic energy of the atoms.

상기한 구조에 따른 작용을 살펴보면 본 발명은 엔진이 구동되는 조건 즉 시동이 걸려질 때 비로소 작동을 하게 되는바 이러한 시동성은 제어장치(40)에서 판단한다.Looking at the action according to the structure described above the present invention will operate only when the engine is driven, that is, when the start is applied, such startability is determined by the control device (40).

즉 시동이 걸려지면 제어장치(40)에 시동신호가 입력되고 제어장치(40)에서는 온도센서(30)에 전원을 공급하여 촉매(20)의 온도상태를 체크한다. 즉 냉간 시동시 촉매(20)의 온도는 대단히 낮기 때문에 온도센서(30)에 의해 체크되는 온도값도 제어장치(40)에 설정된 온도값보다는 낮게 체크되므로 제어장치(40)에서는 스위치(50)를 작동온상태가 되도록 한다.That is, when the start is applied, a start signal is input to the control device 40, and the control device 40 checks the temperature state of the catalyst 20 by supplying power to the temperature sensor 30. That is, since the temperature of the catalyst 20 during cold start is very low, the temperature value checked by the temperature sensor 30 is also checked to be lower than the temperature value set in the control device 40, so that the control device 40 switches the switch 50. Allow it to operate on.

그러면 스위치(50)가 접속상태가 되면서 배터리로부터 유도되는 전원이 촉매 컨버터의 절연커버(10) 내주면으로 부착된 극초단파 발생기(60)로 전달되는바 이렇게 유도된 전원에 의해 극초단파 발생기(60)에서는 극초단파를 발생시켜 촉매(20)를 투과하도록 한다.Then, when the switch 50 is connected, the power derived from the battery is transferred to the microwave generator 60 attached to the inner circumferential surface of the insulating cover 10 of the catalytic converter. Is generated to permeate the catalyst 20.

이같은 극초단파와 함께 촉매(20)를 통과하게 되는 배기가스에 의해 촉매(20)가 급속하게 가열되면 온도센서(30)로부터 감지되는 온도는 순식간에 제어장치(40)에 설정된 온도값보다 상승하게 되므로 제어장치(40)에서는 스위치(50)를 작동오프상태가 되도록 하여 더 이상의 촉매(20) 가열을 중지시키게 된다.When the catalyst 20 is rapidly heated by the exhaust gas passing through the catalyst 20 together with such microwaves, the temperature detected by the temperature sensor 30 rises faster than the temperature value set in the control device 40 in an instant. In the controller 40, the switch 50 is turned off to stop the heating of the catalyst 20.

상기한 바와같이 본 발명에 의해 냉간 시동시 촉매(20)의 가열이 촉진되면서 조기에 활성화가 이루어지게 되면 촉매(20)를 통과시 배기가스를 산화 또는 환원작용에 의해 즉각 중화시킬 수가 있게 되어 냉간시동시의 배기 정화 효율을 대폭적으로 향상시킬 수가 있게 된다.As described above, if the activation of the catalyst 20 is facilitated while the catalyst 20 is heated during cold start, the exhaust gas can be immediately neutralized by oxidizing or reducing when passing through the catalyst 20. The exhaust gas purification efficiency at the start can be greatly improved.

따라서 상기와 같은 간단한 구조에 의해 냉간 시동시의 촉매(20)를 급속 가열하므로서 조기에 활성화를 달성시켜 유해 배기 가스가 가장 많이 생성되는 냉간 시동시의 배기 정화 효율을 향상시켜 대기 오염을 대단히 감소시킬 수가 있게 되는 매우 유용한 효과를 제공할 수가 있게 되는 것이다.Therefore, by the simple structure as described above, by rapidly heating the catalyst 20 during cold start, the activation is achieved early, thereby improving the exhaust purification efficiency during cold start where the most harmful exhaust gas is generated, thereby greatly reducing air pollution. Being able to provide a very useful effect.

Claims (1)

촉매(20)가 절연커버(10)내에 삽입장착되는 구조에 있어서,In the structure in which the catalyst 20 is inserted into the insulating cover 10, 상기한 촉매(20)에 장착되어 촉매(20)의 온도를 감지하는 온도센서(30)와;A temperature sensor 30 mounted on the catalyst 20 to sense a temperature of the catalyst 20; 상기의 온도센서(30)로부터 감지되는 촉매 온도에 따라 스위치(50)의 접속을 단속하는 제어장치(40)와;A control device 40 for controlling the connection of the switch 50 according to the catalyst temperature detected by the temperature sensor 30; 촉매(20) 외주면측 절연커버(10) 내주면에 형성되어 제어장치(40)로부터의 전기적 신호에 의해 극초단파를 발생시키는 극초단파 발생기(60);A microwave generator (60) formed on the inner circumferential surface of the insulating cover (10) on the outer circumferential surface of the catalyst (20) to generate microwaves by an electrical signal from the control device (40); 로서 구비되는 구성을 특징으로 하는 촉매 활성화 촉진장치.Catalyst activation accelerator characterized in that the configuration provided as.
KR1019970055802A 1997-10-29 1997-10-29 Device for promoting activation of catalyst early by generating ultra high frequency according to temperature of catalyst and generating heat with vibration of catalyst atom KR100448735B1 (en)

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Publication number Priority date Publication date Assignee Title
KR920016697A (en) * 1991-02-20 1992-09-25 가나이 쯔도무 Catalytic controller
JPH05231128A (en) * 1992-02-18 1993-09-07 Matsushita Electric Ind Co Ltd Regeneration of filter for internal combustion engine and device therefor
JPH06123222A (en) * 1992-10-08 1994-05-06 Matsushita Electric Ind Co Ltd Exhaust emission control device for internal combustion engine
JPH06248936A (en) * 1993-02-25 1994-09-06 Zexel Corp Burnt exhaust emission control device
JPH07217425A (en) * 1994-02-04 1995-08-15 Zexel Corp Exhaust emission control device for vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920016697A (en) * 1991-02-20 1992-09-25 가나이 쯔도무 Catalytic controller
JPH05231128A (en) * 1992-02-18 1993-09-07 Matsushita Electric Ind Co Ltd Regeneration of filter for internal combustion engine and device therefor
JPH06123222A (en) * 1992-10-08 1994-05-06 Matsushita Electric Ind Co Ltd Exhaust emission control device for internal combustion engine
JPH06248936A (en) * 1993-02-25 1994-09-06 Zexel Corp Burnt exhaust emission control device
JPH07217425A (en) * 1994-02-04 1995-08-15 Zexel Corp Exhaust emission control device for vehicle

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