KR100482870B1 - Purification apparatus of exhaust gas - Google Patents

Purification apparatus of exhaust gas Download PDF

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Publication number
KR100482870B1
KR100482870B1 KR10-2001-0070408A KR20010070408A KR100482870B1 KR 100482870 B1 KR100482870 B1 KR 100482870B1 KR 20010070408 A KR20010070408 A KR 20010070408A KR 100482870 B1 KR100482870 B1 KR 100482870B1
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South Korea
Prior art keywords
trap
cooling water
temperature
cooling
exhaust gas
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KR10-2001-0070408A
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Korean (ko)
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KR20030039472A (en
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김상범
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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
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/10—Combinations of different methods of purification cooling and filtering
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
    • 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

본 발명의 목적은 HC트랩과 촉매의 탄화수소 정화시기를 일치시켜 엔진이 냉간시동 초기에 다량으로 발생하는 미연탄화수소(HC)를 효과적으로 정화처리하여 배출할 수 있는 배기가스 정화처리장치를 제공하는 데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an exhaust gas purifying apparatus capable of effectively purifying and discharging unburned hydrocarbons (HC) generated in a large amount at an initial stage of cold start by matching HC purification periods with hydrocarbon purifying catalysts. .

이를위해 본 발명은 전방에 HC트랩을, 후방에 촉매를 구비하는 촉매컨버터가 배기파이프 도중에 설치되는 배기계에 있어서,To this end, the present invention provides an exhaust system in which a catalytic converter having an HC trap in the front and a catalyst in the rear is installed in the middle of an exhaust pipe.

상기 HC트랩이 일정온도 이상으로 상승하지 않도록 냉각하기 위하여 HC트랩의 외주를 감싸도록 형성되는 냉각실과;A cooling chamber formed to surround the outer circumference of the HC trap in order to cool the HC trap so as not to rise above a predetermined temperature;

엔진의 냉각시스템에 접속되어 냉각수를 상기 냉각실에 공급하는 냉각수 공급라인과;A cooling water supply line connected to an engine cooling system and supplying cooling water to the cooling chamber;

상기 냉각실을 순환한 냉각수를 엔진으로 안내하는 냉각수 리턴라인; 으로 구성되어 있다.A cooling water return line for guiding the cooling water circulated through the cooling chamber to the engine; It consists of.

Description

배기가스 정화처리장치{Purification apparatus of exhaust gas}Purification apparatus of exhaust gas

본 발명은 엔진의 시동초기 정화기능을 향상할 수 있는 배기가스 정화처리장치에 관한 것이다.The present invention relates to an exhaust gas purification treatment apparatus capable of improving an initial starting purification function of an engine.

엔진이 구동되면 다량의 연소가스가 발생하게 되며, 이 연소가스(배기가스)는 배기시스템을 통해 외부로 배출하게 된다.When the engine is driven, a large amount of combustion gas is generated, and the combustion gas (exhaust gas) is discharged to the outside through the exhaust system.

그런데 가솔린 연료를 태워서 발생한 연소가스중에는 인체에 유해한 HC, CO 및 NOx 등이 다량으로 포함되어 있어 이를 그대로 대기로 배출하는 경우 환경오염을 일으키게 되기 때문에 도 2에 도시하는 것과같이 배기파이프(20)의 도중에 촉매컨버터(21)를 설치하여 상기한 유해가스들을 HC트랩(22) 및 촉매(23)의 산화·환원 작용에 의해 각기 무해한 H2O, CO2 및 N2 로 정화처리하여 배출하므로써 대기오염을 최소화하고 있다.However, the combustion gas generated by burning gasoline fuel contains a large amount of HC, CO, and NOx harmful to the human body, and if it is discharged to the atmosphere as it is, it causes environmental pollution. As shown in FIG. By installing a catalytic converter 21 on the way, the harmful gases are purged and discharged into harmless H 2 O, CO 2 and N 2 by the oxidation and reduction of the HC trap 22 and the catalyst 23, respectively. To minimize.

상기한 종래의 촉매컨버터(21)에서 전방에 장착한 HC트랩(22)은 엔진의 시동초기 다량으로 발생하는 미연탄화수소(HC)를 제거하기 위한 것으로, 제올라이트(Zeolite)로 된 HC트랩(22)의 특성상 0 ~ 150℃ 구간에서는 미연탄화수소(HC)를 흡착하였다가, 150℃ 이상에서는 흡착한 HC가 탈착하여 후방의 촉매(23, 삼원촉매)로 보내져 정화처리되도록 되어있다.The HC trap 22 mounted at the front of the conventional catalytic converter 21 is for removing unburned hydrocarbons (HC) generated in the initial stage of engine start, and the HC trap 22 made of zeolite Due to its nature, unburned hydrocarbon (HC) is adsorbed in the range of 0 to 150 ° C., but the adsorbed HC is desorbed at 150 ° C. or higher and sent to the rear catalyst 23 (three-way catalyst) for purification.

그러나 상기한 종래의 정화처리 시스템에서는 제올라이트(Zeolite)의 재질특성상 HC트랩(22)이 0 ~ 150℃ 구간에서 미연탄화수소(HC)를 흡착하여 저장하였다가 150℃ 이상에서는 흡착하였던 HC가 탈착되면서 후방의 촉매(23)에서 미연탄화수소를 정화하도록 구성되어 있기 때문에 촉매(23)의 활성화 온도와의 차이에 따른 정화시기의 불일치 현상으로 탈착된 HC성분이 아직 활성화되지 않은 촉매(23)로부터 정화처리되지 못하고 그대로 배출되게 되는 문제가 있다.However, in the above-described conventional purification treatment system, HC trap 22 adsorbs and stores unburned hydrocarbons (HC) in the range of 0 to 150 ° C. due to the material characteristics of zeolite, and the HC that is adsorbed at 150 ° C. or higher is desorbed to the rear. Since the catalyst 23 of the catalyst 23 is configured to purify unburned hydrocarbon, the HC component desorbed due to the mismatch of the purification timing due to the difference with the activation temperature of the catalyst 23 is not purified from the catalyst 23 which has not yet been activated. There is a problem that can be discharged as it is.

즉, 촉매(23)의 활성화 온도는 대략 350℃ 이상에서 형성되기 때문에 촉매(23)가 그 온도에 도달하였을때에 비로서 정화기능을 가지게 되는데 종래의 경우 HC트랩(22)의 HC탈착온도(150℃)와 촉매(23)의 활성화온도(350℃)에의 도달시간에 있어 시간차가 존재하기 때문에 발생하는 불가피한 현상으로 알려져 왔다.That is, since the activation temperature of the catalyst 23 is formed at approximately 350 ° C. or more, the catalyst 23 has a purification function as the catalyst 23 reaches the temperature. In the conventional case, the HC desorption temperature of the HC trap 22 ( 150 ° C.) and a time difference between the arrival time of the catalyst 23 and the activation temperature (350 ° C.) has been known as an unavoidable phenomenon.

이에 본 발명은 상기한 점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은Accordingly, the present invention has been made in view of the above-mentioned points, and its object is

HC트랩과 촉매의 탄화수소 정화시기를 일치시켜 엔진이 냉간시동 초기에 다량으로 발생하는 미연탄화수소(HC)를 효과적으로 정화처리하여 배출할 수 있는 배기가스 정화처리장치를 제공하는 데 있다.The present invention provides an exhaust gas purifying apparatus capable of effectively purifying and discharging unburned hydrocarbons (HC) generated in a large amount at an initial stage of cold start by matching HC purification with hydrocarbon purifying time of catalyst.

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

전방에 HC트랩을, 후방에 촉매를 구비하는 촉매컨버터가 배기파이프 도중에 설치되는 배기계에 있어서,In an exhaust system in which a catalytic converter having an HC trap in the front and a catalyst in the rear is provided in the middle of an exhaust pipe,

상기 HC트랩이 일정온도 이상으로 상승하지 않도록 냉각하기 위하여 HC트랩의 외주를 감싸도록 형성되는 냉각실과;A cooling chamber formed to surround the outer circumference of the HC trap in order to cool the HC trap so as not to rise above a predetermined temperature;

엔진의 냉각시스템에 접속되어 냉각수를 상기 냉각실에 공급하는 냉각수 공급라인과;A cooling water supply line connected to an engine cooling system and supplying cooling water to the cooling chamber;

상기 냉각실을 순환한 냉각수를 엔진으로 안내하는 냉각수 리턴라인; 으로 구성되어 있다.A cooling water return line for guiding the cooling water circulated through the cooling chamber to the engine; It consists of.

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 배기가스 정화처리장치를 나타내는 도면으로 도면중 부호 1은 엔진(2)으로부터 배출되는 배기가스를 외부로 배출하는 배기파이프이다.1 is a view showing an exhaust gas purifying apparatus according to the present invention, in which 1 is an exhaust pipe for discharging the exhaust gas discharged from the engine 2 to the outside.

배기파이프(1)의 도중에는 촉매컨버터(3)가 설치되어 있으며, 촉매컨버터(3)의 전방에는 HC트랩(4)이 마련되고, HC트랩(4)의 후방에는 촉매(5)가 마련되어 있다.A catalyst converter 3 is provided in the middle of the exhaust pipe 1, an HC trap 4 is provided in front of the catalytic converter 3, and a catalyst 5 is provided behind the HC trap 4.

그리고 HC트랩(4)의 외주에는 냉각실(6)이 형성되어 있으며, 이 냉각실(6)은 냉각수 공급라인(7)을 통해 엔진(2)의 냉각수 시스템에 연결되어 있다.A cooling chamber 6 is formed on the outer circumference of the HC trap 4, which is connected to the cooling water system of the engine 2 via the cooling water supply line 7.

또 냉각실(6)은 냉각수 리턴라인(8)을 통해 다시 엔진(2)의 냉각시스템에 접속되고 있다.The cooling chamber 6 is further connected to the cooling system of the engine 2 via the cooling water return line 8.

상기 냉각수 공급라인(7)의 도중에는 냉각수 우회공급라인(9)이 분기접속되어 있으며, 그 냉각수 우회공급라인(9)에는 방열냉각기(10)가 설치되어 있다.A cooling water bypass supply line 9 is branched in the middle of the cooling water supply line 7, and a heat radiation cooler 10 is installed in the cooling water bypass supply line 9.

그리고 상기 냉각수 공급라인(7)과 냉각수 우회라인(9)의 분기접속지점에는 방향전환밸브(11)가 설치되어 있다.A diverter valve 11 is provided at the branch connection point between the cooling water supply line 7 and the cooling water bypass line 9.

도면중 미설명 부호 12는 웜업용 촉매컨버터(WCC)이다.In the figure, reference numeral 12 denotes a warm-up catalytic converter (WCC).

이하에 본 발명에 의한 배기가스 정화처리장치의 작동에 대하여 설명한다.The operation of the exhaust gas purifying apparatus according to the present invention will be described below.

엔진의 정상운전 상태 및 시동오프시 전자제어장치(13)는 방향전환밸브(11)를 닫아서 냉각수 공급라인(7)과 냉각수 우회라인(9)을 폐쇄한다.In the normal operation state and start-off of the engine, the electronic control device 13 closes the direction switching valve 11 to close the coolant supply line 7 and the coolant bypass line 9.

다음에 엔진이 시동되어 웜업되기 전인 냉간시동상태에서는 냉각실(6)로 냉각수가 흐르지 않는다.Next, in the cold start state before the engine is started and warmed up, the cooling water does not flow into the cooling chamber 6.

이때 배기파이프(1)를 통해 배출되는 배기가스는 촉매컨버터(3)의 전방의 HC트랩(4)을 통과하면서 미연탄화수소(HC) 성분이 흡착되어지게 된다.At this time, the exhaust gas discharged through the exhaust pipe 1 passes through the HC trap 4 in front of the catalytic converter 3 and the unburned hydrocarbon (HC) component is adsorbed.

점차 시간이 경과하여 HC트랩(4)이 가열되면 온도센서(14)를 통해 HC트랩(4)의 온도를 검출하여 기준치, 예를들어 100℃에 도달하게 되면 전자제어장치(13)는 방향전환밸브(11)를 제어하여 냉각수 공급라인(7)을 통하여 냉각수가 냉각실(6)로 들어가도록 하여 HC트랩(4)을 냉각시키게 된다.When the HC trap 4 is gradually heated as time passes, the temperature of the HC trap 4 is detected by the temperature sensor 14, and when the reference value, for example, 100 ° C. is reached, the electronic control device 13 changes direction. The valve 11 is controlled to allow the cooling water to enter the cooling chamber 6 through the cooling water supply line 7 to cool the HC trap 4.

그럼에도 불구하고 HC트랩(4)의 온도가 계속 상승하여 예를들어 온도센서(14)로부터 검출된 온도가 HC의 탈착온도에 근접한 130℃에 도달하게 되면 현재의 냉각수에 의해서는 HC트랩(4)의 온도상승을 제어할 수 없는 것으로 판단하여 전자제어장치(13)는 방향전환밸브(11)를 제어하여 냉각수 우회라인(9)이 개방되도록 한다.Nevertheless, when the temperature of the HC trap 4 continues to rise, for example, when the temperature detected from the temperature sensor 14 reaches 130 deg. C, which is close to the desorption temperature of HC, the HC trap 4 It is determined that the temperature rise of the electronic control device 13 can not control the direction switching valve 11 to open the cooling water bypass line (9).

이에따라 냉각수는 방열냉각기(10)를 통해 더욱 낮은 온도로 냉각된 후 냉각실(6)에 들어가 열교환에 의해 HC트랩(4)의 온도를 낮춘 후 엔진(2)으로 귀환하게 되는 것이며, 이를통해 HC트랩(4)은 150℃ 보다 낮은 온도로 유지되므로써 배기가스중의 HC성분의 흡착기능을 유지하면서 HC를 탈착하지 않고 보존하게 된다.Accordingly, the coolant is cooled to a lower temperature through the heat dissipation cooler 10, enters the cooling chamber 6, lowers the temperature of the HC trap 4 by heat exchange, and then returns to the engine 2. The trap 4 is maintained at a temperature lower than 150 ° C., thereby preserving the HC 4 without desorption while maintaining the adsorption function of the HC component in the exhaust gas.

다음에 엔진이 웜업되고, 온도센서(15)로부터 검출된 촉매(5)가 활성화 온도, 예를들어 350℃에 도달하게 되면 전자제어장치(13)는 방향전환밸브(11)를 닫아 냉각실(6)에 공급하는 냉각수를 차단하게 된다. 이에따라 HC트랩(4)이 배기가스에 의해 가열되어 온도가 상승되어지며, 150℃에 도달하면 HC트랩(4)은 제올라이트의 특성에 기인하여 흡착되었던 HC성분이 탈착되어 배기가스와 함께 후방의 촉매(5, 삼원촉매)를 통과하여 배출되며, 촉매(5)를 통과하는 중에 HC성분이 산화·환원되어 H2O로 변환(탄소성분은 CO 성분과 함께 산화되어 CO2 로 변환)되므로써 정화처리되어지게 되는 것이다.Next, when the engine is warmed up and the catalyst 5 detected from the temperature sensor 15 reaches the activation temperature, for example, 350 ° C., the electronic controller 13 closes the direction switching valve 11 to close the cooling chamber ( 6) The coolant to be cut off. Accordingly, the HC trap 4 is heated by the exhaust gas to raise the temperature. When the temperature reaches 150 ° C., the HC trap 4 desorbs the HC component adsorbed due to the characteristics of the zeolite. It is discharged through (5, three-way catalyst), and the HC component is oxidized and reduced while passing through the catalyst (5) and converted into H 2 O (carbon component is oxidized with CO component and converted into CO 2 ). It will be done.

촉매(5)가 활성화 온도에 도달하면 더이상 HC트랩(4)의 냉각작용을 중단하기 위해 방향전환밸브(11)를 닫고 오프시키는 이유는 엔진이 이미 웜업되어 HC배출량이 크게 줄어들었고, 또 촉매(5)의 정화기능이 정상화되었기 때문에 HC성분의 대기중의 방출을 방지할 수 있기 때문이다.When the catalyst 5 reaches the activation temperature, the reason for closing and turning off the direction switching valve 11 to stop the HC trap 4 from cooling further is that the engine is already warmed up, and the HC emissions are greatly reduced. Since the purification function in 5) is normalized, it is possible to prevent the release of HC components into the atmosphere.

이상과 같은 본 발명은 촉매컨버터의 HC트랩에 냉각수를 공급하여 냉각할 수 있는 냉각장치를 마련하는 것에 의해서, 촉매가 활성화 온도에 도달하기 전에는 HC트랩을 계속 낮은 온도로 유지하여 엔진의 냉간시동초기 대량으로 발생되어 HC트랩에 흡착되었던 HC의 탈착시점을 촉매활성화 시점까지 지연시키므로써 HC성분의 제거효율이 크게 향상되어 대기오염을 방지하게 되는 효과가 있다.According to the present invention as described above, by providing a cooling device for cooling by supplying cooling water to the HC trap of the catalytic converter, the HC trap is kept at a low temperature until the catalyst reaches the activation temperature, and thus the engine starts cold start. By delaying the desorption time of HC generated in a large amount and adsorbed on the HC trap until the catalyst activation time, the removal efficiency of the HC component is greatly improved, thereby preventing air pollution.

도 1은 본 발명에 의한 배기가스 정화처리장치를 나타내는 도면1 is a view showing an exhaust gas purification treatment apparatus according to the present invention.

도 2는 종래의 배기가스 처리시스템2 is a conventional exhaust gas treatment system

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

1 : 배기파이프 2 : 엔진1: exhaust pipe 2: engine

3 : 촉매컨버터 4 : HC트랩3: catalytic converter 4: HC trap

5 : 촉매 6 : 냉각실5: catalyst 6: cooling chamber

7 : 냉각수 공급라인 8 : 냉각수 리턴라인7: cooling water supply line 8: cooling water return line

9 : 냉각수 우회공급라인 10 : 방열냉각기9: cooling water bypass supply line 10: heat dissipation cooler

11 : 방향전환밸브 12 : WCC11: Directional valve 12: WCC

13 : 전자제어장치 14,15 : 온도센서13: electronic control device 14, 15: temperature sensor

Claims (8)

전방에는 HC트랩이 후방에는 촉매가 구비되어 배기 파이프의 도중에 장착되는 촉매컨버터와; 상기 HC트랩이 일정온도 이상으로 상승하지 않도록 냉각하기 위하여 HC트랩의 외주를 감싸도록 형성되는 냉각실과; 엔진의 냉각시스템에 접속되어 냉각수를 상기 냉각실에 공급하는 냉각수 공급라인과; 상기한 냉각수 공급라인의 도중에 유체의 흐름을 제어하기 위해 개폐가능하도록 형성되는 밸브와; 상기 냉각실을 순환한 냉각수를 엔진으로 안내하는 냉각수 리턴라인;을 포함하여 구성되는 차량의 배기계에 있어서,A catalytic converter having an HC trap at the front and a catalyst at the rear thereof and mounted in the middle of the exhaust pipe; A cooling chamber formed to surround the outer circumference of the HC trap in order to cool the HC trap so as not to rise above a predetermined temperature; A cooling water supply line connected to an engine cooling system and supplying cooling water to the cooling chamber; A valve configured to be opened and closed to control the flow of the fluid in the middle of the cooling water supply line; In the exhaust system of a vehicle comprising: a cooling water return line for guiding the cooling water circulated through the cooling chamber to the engine, 상기 냉각수 공급라인(7)의 도중에는 냉각수의 우회공급라인(9)이 분기 접속되며, 그 우회공급라인(9)에는 방열냉각기(10)가 설치되고, 상기 밸브는 상기 라인들의 분기접속지점에 설치되어 냉각수의 공급을 차단하거나 공급경로를 변환하는 방향전환밸브(11)인 것을 특징으로 하는 배기가스 정화처리장치.The bypass supply line 9 of the coolant is branch-connected in the middle of the cooling water supply line 7, and the heat dissipation cooler 10 is installed in the bypass supply line 9, and the valve is installed at the branch connection point of the lines. Exhaust gas purification treatment device, characterized in that the direction switching valve (11) to block the supply of cooling water or to change the supply path. 삭제delete 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 방향전환밸브(11)는 HC트랩(4)과 촉매(5)의 온도를 검출하는 온도센서(14,15)들의 정보에 의거한 전자제어장치(13)에 의해 작동이 제어되는 것을 특징으로 하는 배기가스 정화처리장치.The directional valve 11 is characterized in that the operation is controlled by the electronic control device 13 based on the information of the temperature sensor (14, 15) for detecting the temperature of the HC trap (4) and the catalyst (5) Exhaust gas purification treatment apparatus. 제 4 항에 있어서,The method of claim 4, wherein 상기 전자제어장치는 엔진의 시동초기 HC트랩의 온도가 낮은 상태에서는 냉각수가 냉각실에 공급되지 않도록 방향전환밸브를 제어하는 것을 특징으로 하는 배기가스 정화처리장치.The electronic control device is an exhaust gas purifying apparatus, characterized in that for controlling the directional valve so that the cooling water is not supplied to the cooling chamber when the temperature of the initial HC trap is low. 제 5 항에 있어서,The method of claim 5, wherein 상기 전자제어장치는 엔진의 시동 초기 HC트랩이 일정온도 이상으로 상승되었음이 온도센서로부터 검출되면 상기 방향전환밸브를 제어하여 냉각수 공급라인을 통해 냉각실에 냉각수가 공급되어 HC트랩의 온도를 낮추도록 제어하게 되는 것을 특징으로 하는 배기가스 정화처리장치.The electronic control unit controls the directional valve to reduce the temperature of the HC trap by supplying cooling water to the cooling chamber through a cooling water supply line when it is detected from the temperature sensor that the initial HC trap has been raised above a predetermined temperature. Exhaust gas purification apparatus characterized in that the control. 제 5 항에 있어서,The method of claim 5, wherein 상기 전자제어장치는 엔진의 시동 초기 HC트랩이 흡착하였던 HC를 탈착하게 되는 온도에 근접하였음이 온도센서에 의해 검출되면 상기 방향전환밸브를 제어하여 냉각수가 냉각수 우회공급라인에 설치된 방열냉각기를 경유하여 HC트랩 외주의 냉각실에 공급하도록 제어하여 HC트랩의 온도를 낮추게 되는 것을 특징으로 하는 배기가스 정화처리장치.The electronic control device controls the direction switching valve when the temperature sensor detects that the HC trap, which has been adsorbed by the HC trap at the initial start of the engine, is approached by the temperature sensor. Exhaust gas purification apparatus characterized in that the temperature of the HC trap is lowered by controlling the HC trap to be supplied to the cooling chamber of the outer periphery of the HC trap. 제 6 항에 있어서,The method of claim 6, 상기 전자제어장치는 HC트랩 후방의 촉매의 온도가 활성화 온도에 도달한 것으로 온도센서에 의해 검출된 경우 냉각수가 냉각실에 공급되는 것을 차단하도록 상기 방향전환밸브를 제어하는 것을 특징으로 하는 배기가스 정화처리장치.The electronic controller is configured to control the directional valve to block the cooling water from being supplied to the cooling chamber when the temperature of the catalyst behind the HC trap reaches the activation temperature and is detected by the temperature sensor. Processing unit.
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KR102130877B1 (en) * 2014-03-20 2020-07-08 얀마 파워 테크놀로지 가부시키가이샤 Engine device and stationary work machine having same mounted

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