KR100190401B1 - Noxious gas reduction system of a car - Google Patents

Noxious gas reduction system of a car Download PDF

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Publication number
KR100190401B1
KR100190401B1 KR1019960035400A KR19960035400A KR100190401B1 KR 100190401 B1 KR100190401 B1 KR 100190401B1 KR 1019960035400 A KR1019960035400 A KR 1019960035400A KR 19960035400 A KR19960035400 A KR 19960035400A KR 100190401 B1 KR100190401 B1 KR 100190401B1
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South Korea
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vehicle
exhaust
exhaust manifold
door
exhaust gas
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KR1019960035400A
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Korean (ko)
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KR19980015918A (en
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김기환
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양재신
대우자동차주식회사
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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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

본 발명은 차량의 시동시 유해한 배기가스를 저감시키는 장치에 관한 것으로서, 차량의 엔진으로부터 나오는 배기가스를 배출시키는 배기다기관(1)과 상기 배기다기관(1)의 앞에 장착되어 상기 배기다기관(1)으로 배출되는 유해가스를 정화시키는 삼원촉매장치(2)와 상기 배기다기관(1)과 삼원촉매장치(2) 사이에 장치되어 배기통로를 가열시키는 예열코일(3)과 상기 예열코일(3)에 전기적으로 연결되어 차량의 도어가 열리면 시동이 걸리기 전까지 상기 예열코일(3)을 작동시켜 배기통로가 예열되도록 제어하는 제어부(4)와, 상기 배기다기관 부근과 도어 접촉 부위 및 시동장치 부위에 각각 장치되어 배기다기관의 온도와 도어의 열림 상태 및 시동 상태를 감지하여 상기 제어부(4)에 소정의 신호를 제공하는 센서(5)로 구성되어, 차량의 시동이 걸리기 전 일정시간 동안에 배기통로를 예열시켜서 삼원촉매장치가 제 기능을 할 수 있도록 하므로써 차량의 시동이 걸린 직후에 배출되는 배기가스가 원활히 정화될 수 있게 하여 차량의 유해한 배기가스를 저감시키는 효과가 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reducing harmful exhaust gas at the start of a vehicle, and is provided in front of the exhaust manifold (1) and the exhaust manifold (1) for discharging the exhaust gas from the engine of the vehicle. The preheating coil 3 and the preheating coil 3 which are installed between the three-way catalyst device 2 for purifying the harmful gas discharged to the exhaust gas and the exhaust manifold 1 and the three-way catalyst device 2 to heat the exhaust passage. The control unit 4 is electrically connected to control the exhaust passage to be preheated by operating the preheating coil 3 until the start of the vehicle, and the apparatus is installed in the vicinity of the exhaust manifold, in the door contact area and the starting device, respectively. And a sensor 5 which senses the temperature of the exhaust manifold, the open state and the start state of the door, and provides a predetermined signal to the controller 4, before the vehicle is started. By preheating the exhaust passage for a certain time so that the three-way catalyst can function properly, it is possible to smoothly purify the exhaust gas immediately after the vehicle is started, thereby reducing the harmful exhaust gas of the vehicle.

Description

차량시동시 유해배기가스 저감장치Hazardous Exhaust Gas Reduction Device

본 발명은 차량의 시동시 유해한 배기가스를 저감시키는 장치에 관한 것으로서, 보다 상세하게는 차량의 시동이 꺼진 상태에서 도어가 열리는 시점에 작동되어 시동이 걸리기 전까지는 일정 시간 동안에 배기통로를 가열시켜서 차량의 시동을 건 직후에 배출되는 배기가스에 혼합된 유해가스를 저감시킬 수 있도록 한, 차량시동시 유해배기가스 저감장치에 관한 것이다.The present invention relates to a device for reducing harmful exhaust gas at the start of a vehicle. More particularly, the present invention relates to a device for reducing harmful exhaust gas. The present invention relates to a device for reducing harmful exhaust gas when starting a vehicle, so that the harmful gas mixed with the exhaust gas emitted immediately after starting the engine can be reduced.

일반적으로 종래 차량의 배기 시스템에 있어서는, 배기가스를 배출시키는 배기다기관의 앞에 삼원촉매장치를 장착하여 엔진에서 미연소된 배기가스의 유해성분인 탄화수소, 일산화탄소 및 산화질소성분(NOX)을 촉매반응시켜서 무해성분의 H2O, CO2, N2로 정화시켜서 배출시키고 있는데, 이러한 삼원촉매장치는 일정한 온도 이상이 되어야 제기능을 발휘하기 때문에 주행 중에는 정상적으로 기능을 하지만, 엔진의 시동을 건 후 엔진이 워밍업을 하는 동안에는 제기능을 충분히 발휘하지 못하여 시동직후의 유해배기가스가 그대로 배출되는 문제점이 있었다.In general, in the exhaust system of a conventional vehicle, a three-way catalyst device is installed in front of an exhaust manifold that discharges exhaust gas, thereby catalyzing the reaction of hydrocarbons, carbon monoxide, and nitrogen oxide components (NO X ), which are harmful components of the unburned exhaust gas from the engine. It is purified and discharged by H 2 O, CO 2 , and N 2 of harmless components.The three-way catalyst works properly when it is above a certain temperature, so it functions normally during driving. During this warm-up, there was a problem in that no harmful exhaust gas was discharged as it was immediately after starting because it was not fully functional.

본 발명에서는 이러한 문제점을 해소하기 위하여 배기다기관과 삼원촉매장치 사이에 예열코일을 장착함과 동시에, 이러한 예열코일의 작동을 제어하는 제어부 그리고 도어열림여부, 시동장치의 온/오프 및 배기통로의 온도가 일정온도에 도달하였는지 여부를 감지하여 상기 제어부에 제어신호를 보내는 센서들을 설치함으로서 차량의 시동이 꺼진 상태에서 차량의 도어를 열면 예열코일이 작동되어 시동 전에 배기통로가 적정 온도로 가열되게 하여 시동과 함께 삼원촉매장치가 배기가스를 충분히 정화시킬 수 있도록 한, 차량시동시 유해배기가스 저감장치를 제공하는데 그 목적이 있다.In the present invention, in order to solve this problem, a preheating coil is installed between the exhaust manifold and the three-way catalyst device, and a control unit for controlling the operation of the preheating coil and whether the door is opened, on / off of the starter and the temperature of the exhaust passage. By detecting whether the temperature has reached a certain temperature and installing sensors to send a control signal to the control unit. When the vehicle door is opened while the vehicle is turned off, the preheating coil is operated so that the exhaust passage is heated to an appropriate temperature before starting. In addition, it is an object of the present invention to provide a harmful exhaust gas reduction device when starting the vehicle, so that the three-way catalyst device can sufficiently clean the exhaust gas.

제1도는 본 발명에 의한 차량시동시 유해배기가스 저감장치의 개략적인 구성도이다.1 is a schematic configuration diagram of an apparatus for reducing harmful exhaust gas at vehicle startup according to the present invention.

제2도는 본 발명의 차량시동시 유해배기가스 저감장치의 센서들(5,5',5'')로부터 입력되는 신호에 따라 예열코일의 작동을 제어하는 과정을 상세히 설명하는 흐름도이다.2 is a flowchart illustrating a process of controlling the operation of the preheating coil in detail according to a signal input from the sensors 5, 5 ', 5' 'of the harmful exhaust gas reducing device at the time of starting the vehicle.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 배기다기관 2 : 삼원촉매장치1: exhaust manifold 2: three-way catalyst device

3 : 예열코일 4 : 제어부3: preheating coil 4: control part

5 : 도어열림 감지센서 5' : 배기다기관부근 온도감지센서5: Door open sensor 5 ': Temperature sensor near exhaust manifold

5'' : 시동장치 ON/OFF 감지센서5 '': Start device ON / OFF detection sensor

전술한 바와 같은 본 발명의 목적을 달성하기 위하여 본 발명은 차량의 엔진에서 미연소된 배기가스를 배출시키는 배기다기관(1);In order to achieve the object of the present invention as described above, the present invention provides an exhaust manifold (1) for discharging unburned exhaust gas from an engine of a vehicle;

상기 배기다기관의 앞에 장착되어 상기 배기다기관으로 배출되는 유해가스를 정화시키는 삼원촉매장치(2);A three-way catalyst device (2) mounted in front of the exhaust manifold to purify the harmful gas discharged to the exhaust manifold;

상기 배기다기관(1)과 삼원촉매장치(2) 사이에 장착되어 배기통로를 가열시키는 예열코일(3);A preheating coil 3 mounted between the exhaust manifold 1 and the three-way catalyst device 2 for heating the exhaust passage;

상기 예열코일(3)에 전기적으로 연결되어 차량의 시동이 꺼진 상태에서 도어가 열리면 시동이 걸리기 전까지 상기 예열코일(3)을 작동시켜서 배기통로가 예열되도록 제어하는 제어부(4) 및;A control unit (4) electrically connected to the preheating coil (3) and controlling the exhaust passage to be preheated by operating the preheating coil (3) until the start is started when the door is opened in the state that the vehicle is turned off;

도어접촉부위, 배기다기관(1) 부근 및 시동장치에 각각 설치되어 도어의 열림상태, 배기통로의 온도 및 시동장치의 온/오프 상태를 감지하여 상기 제어부(4)에 제어신호를 보내는 센서들(5,5',5'')로 구성됨을 특징으로 한다.Sensors installed in the door contact portion, near the exhaust manifold 1, and the starter, respectively, to detect the open state of the door, the temperature of the exhaust passage, and the on / off state of the starter and send a control signal to the controller 4 ( 5,5 ', 5' ').

이와같이 구성된 본 발명은 차량의 시동이 꺼져 있는 상태에서 도어가 열리면 예열코일(3)이 작동되어 배기통로를 적정온도로 가열하여 시동시 삼원촉매장치(2)가 제기능을 발휘하여 배기가스에 포함된 유해가스를 정화시키도록 함과 동시에, 시동이 걸린 경우와 배기통로가 일정온도에 도달한 경우에는 배기통로의 예열이 불필요하므로 예열코일(3)의 작동이 제어부(4)에 의해 중지되며, 도어가 열린 후 시동오프상태가 일정시간을 경과한 경우에는 차량을 사용하지 않는 것으로 제어부(4)에서 판단하여 예열코일(3)의 작동을 중단시킴으로써, 시동시 발생되는 유해배기가스를 효과적으로 저감시킬 수 있도록 되어 있다.According to the present invention configured as described above, when the door is opened while the vehicle is turned off, the preheating coil 3 is operated to heat the exhaust passage to an appropriate temperature, so that the three-way catalyst device 2 performs a proper function at startup and is included in the exhaust gas. At the same time, the preheating coil 3 is stopped by the controller 4 because the preheating of the exhaust passage is not necessary when the start-up and the exhaust passage have reached a predetermined temperature. If the start-off state has elapsed after a certain time after the door is opened, the control unit 4 determines that the vehicle is not used and stops the operation of the preheating coil 3, thereby effectively reducing the harmful exhaust gas generated at start-up. It is supposed to be.

이하, 첨부된 도면을 참조하여 본 발명의 하나의 구체예를 설명하면 다음과 같다.Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

제1도는 본 발명에 의한 차량시동시 유해배기가스 저감장치의 개략적인 구성도로서, 이를 참조하면 본 발명은 차량의 엔진에서 미연소된 배기가스를 배출시키는 배기다기관(1), 상기 배기다기관의 앞에 장착되어 상기 배기다기관으로 배출되는 유해가스를 정화시키는 삼원촉매장치(2), 상기 배기다기관(1)과 삼원촉매장치(2)사이에 장착되어 배기통로를 가열시키는 예열코일(3), 상기 예열코일(3)에 전기적으로 연결되어 차량의 시동이 꺼진 상태에서 도어가 열리면 시동이 걸리기 전까지 상기 예열코일(3)을 작동시켜서 배기통로가 예열되도록 제어하는 제어부(4) 그리고 도어접촉부위, 배기다기관(1)부근 및 시동장치에 각각 설치되어 도어의 열림상태, 배기통로의 온도 및 시동장치의 온/오프 상태를 감지하여 상기 제어부(4)에 제어신호를 보내는 도어열림 감지센서(5), 배기다기관부근 온도감지센서(5') 및 시동장치 ON/OFF감지센서 센서(5'')로 구성됨을 알 수 있다.FIG. 1 is a schematic configuration diagram of a device for reducing harmful exhaust gas during vehicle startup according to the present invention. Referring to the present invention, the present invention provides an exhaust manifold 1 for discharging unburned exhaust gas from an engine of a vehicle. Three-way catalyst device (2) mounted in front to purify the harmful gas discharged to the exhaust manifold, preheating coil (3) mounted between the exhaust manifold (1) and three-way catalyst device (2), the If the door is opened while the vehicle is turned off and electrically connected to the preheating coil 3, the control unit 4 controls the exhaust passage to be preheated by operating the preheating coil 3 until starting, and the door contact part and the exhaust. Door rows installed near the engine and the starter, respectively, to detect the open state of the door, the temperature of the exhaust passage, and the on / off state of the starter, and to send a control signal to the controller 4. Detection sensor 5, it can be seen consisting of a baegida engine near the temperature sensor (5 ') and the ignition ON / OFF detection sensors (5' ').

한편, 제1도 및 제2도를 참조하여 본 발명의 차량시동시 유해배기가스 저감장치의 센서들(5,5',5'')로부터 입력되는 신호를 제어하여 예열코일(3)을 작동시키는 과정을 상세히 설명하면 다음과 같다.Meanwhile, referring to FIGS. 1 and 2, the preheating coil 3 is operated by controlling a signal input from the sensors 5, 5 ′, 5 ″ of the harmful exhaust gas reducing device when starting the vehicle of the present invention. A detailed description of the process is as follows.

차량의 시동을 걸기 전에 배기통로를 예열시켜서 시동시 차가운 배기가스를 적정온도 이상으로 올리기 위해, 차량의 시동이 꺼져 있는 상태에서 도어가 열리면 도어의 접촉부에 장치된 도어열림 감지센서(5)에서 도어의 열림상태를 감지하여 HIGH레벨신호를 제어부(4)에 보냄과 동시에 시동장치에 설치된 시동장치 ON/OFF감지센서 센서(5'')에서는 시동의 꺼짐상태를 감지하여 LOW 레벨신호를 제어부(4)로 보내게 되고, 이때 제어부(4)의 출력단자는 활성화되어 예열코일(3)을 작동시키게 된다. 또한, 배기다기관(1)의 부근에 장착된 배기다기관부근 온도감지센서(5')에서 배기통로의 온도를 감지하여 역시 제어부(4)로 신호를 보내면 제어부(4)에서는 배기통로의 온도가 일정 온도에 도달하였는지를 비교판단하여 배기통로의 온도가 일정 온도에 도달한 경우에는 제어부(4)의 출력단자를 비활성화시킴으로써 상기 예열코일(3)의 작동을 중지시켜 결국에는 배기통로가 과열되지 않도록 한다.In order to preheat the exhaust passage before starting the vehicle and to raise the cool exhaust gas above the proper temperature at the start, when the door is opened while the vehicle is turned off, the door opening sensor 5 installed in the contact portion of the door The high level signal is sent to the control unit 4 and the starter ON / OFF detection sensor sensor 5 '' installed in the starter detects the off state of the start and receives the low level signal from the control unit 4. ), And the output terminal of the control unit 4 is activated to operate the preheating coil (3). In addition, when the temperature sensor 5 'near the exhaust manifold 1 detects the temperature of the exhaust passage and also sends a signal to the controller 4, the temperature of the exhaust passage is constant. When the temperature of the exhaust passage reaches a certain temperature by comparing whether the temperature has been reached, the output terminal of the controller 4 is deactivated to stop the operation of the preheating coil 3 so that the exhaust passage is not overheated.

또한, 도어가 열린 후에는 차량의 시동상태를 감지하는 시동장치 ON/OFF 감지센서 센서(5'')로부터 제어부(4)로 HIGH레벨의 신호가 입력되면 제어부(4)에서는 시동이 걸린 것으로 판단하여 예열코일(3)의 작동을 중시지키도록 하고, 또한 일정시간이 경과하여도 시동장치 ON/OFF 감지센서 센서(5'')에서 HIGH레벨의 신호가 제어부(4)로 입력되지 않으면 차량을 사용하지 않는 것으로 판단하여 마찬가지로 상기 예열코일(3)의 작동을 중지시킴으로써 불필요하게 배기통로가 예열되지 않도록 하는 한편 밧데리가 방전되지 않도록 한다.In addition, after the door is opened, if a high level signal is input from the starter ON / OFF detecting sensor sensor 5 '' that detects the starting state of the vehicle to the controller 4, the controller 4 determines that the engine is started. To stop the operation of the preheating coil 3, and if a high level signal is not input to the control unit 4 from the starter ON / OFF detection sensor sensor 5 " By judging that it is not used, the operation of the preheating coil 3 is similarly stopped to prevent the exhaust passage from being preheated unnecessarily and to prevent the battery from being discharged.

상기와 같이 본 발명은 차량의 시동이 꺼진 상태에서 도어가 열리는 시점에서 작동되어 시동이 걸리기 전까지의 시간 동안에 배기통로가 일정온도까지만 예열되도록 구성되어 있다.As described above, the present invention is configured such that the exhaust passage is preheated only to a predetermined temperature for a time until the start of the door is started when the door is opened when the vehicle is turned off.

이와같이 구성된 본 발명은 차량의 시동이 걸리기 전 일정시간 동안에 배기통로를 예열시켜 삼원촉매장치가 제기능을 발휘할 수 있도록 함으로써 차량의 시동이 걸린 직후에 배출되는 배기가스가 원활히 정화될 수 있게 하여 차량의 유해한 배기가스를 저감시키는 효과가 있다.The present invention configured as described above allows the three-way catalyst device to function properly by preheating the exhaust passage for a predetermined time before the vehicle is started, so that the exhaust gas emitted immediately after the vehicle is started can be purified smoothly. It has the effect of reducing harmful exhaust gas.

Claims (1)

차량의 엔진에서 미연소된 배기가스를 배출시키는 배기다기관(1);An exhaust manifold 1 for exhausting unburned exhaust gas from the engine of the vehicle; 상기 배기다기관의 앞에 장착되어 상기 배기다기관으로 배출되는 유해가스를 정화시키는 삼원촉매장치(2);A three-way catalyst device (2) mounted in front of the exhaust manifold to purify the harmful gas discharged to the exhaust manifold; 상기 배기다기관(1)과 삼원촉매장치(2) 사이에 장착되어 배기통로를 가열시키는 예열코일(3);A preheating coil 3 mounted between the exhaust manifold 1 and the three-way catalyst device 2 for heating the exhaust passage; 상기 예열코일(3)에 전기적으로 연결되어 차량의 시동이 꺼진 상태에서 도어가 열리면 시동이 걸리기 전까지 상기 예열코일(3)을 작동시켜서 배기통로가 예열되도록 제어하는 제어부(4); 및A control unit (4) electrically connected to the preheating coil (3) to control the exhaust passage to be preheated by operating the preheating coil (3) until the door is opened when the door is opened in the state that the vehicle is turned off; And 도어접촉부위, 배기다기관(1) 부근 및 시동장치에 각각 설치되어 도어의 열림상태, 배기통로의 온도 및 시동장치의 온/오프 상태를 감지하여 상기 제어부(4)에 제어신호를 보내는 도어열림 감지센서(5), 배기다기관부근 온도감지센서(5') 및 시동장치 ON/OFF 감지센서(5'')로 구성되는 차량시동시 유해배기가스 저감장치에 있어서,Door opening detection, which is installed in the door contact area, near the exhaust manifold 1 and the starter, respectively, detects the open state of the door, the temperature of the exhaust passage and the on / off state of the starter, and sends a control signal to the controller 4. In the vehicle start-up harmful gas reduction device consisting of a sensor (5), the temperature sensor near the exhaust manifold (5 ') and the starter ON / OFF detection sensor (5' '), 상기 제어부(4)는 도어열림 감지센서(5)로 부터 HIGH레벨의 신호가 입력됨과 동시에 시동장치 ON/OFF 감지센서 센서(5'')로부터 LOW레벨의 신호가 입력되면 출력단자가 활성화되어 상기 예열코일(3)을 작동시키며, 상기 배기다기관부근 온도감지센서(5')에서 입력된 온도를 기준치 온도와 비교하여 상기 예열코일(3)의 작동계속여부를 판단하는 것을 특징으로 하는 차량시동시 유해배기가스 저감장치.The control unit 4 receives a high level signal from the door open sensor 5 and at the same time a low level signal is input from the starter ON / OFF detection sensor sensor 5 '', the output terminal is activated to preheat the signal. It operates the coil (3), it is harmful when starting the vehicle, characterized in that it is determined whether the operation of the preheating coil (3) by comparing the temperature input from the temperature sensor 5 'near the exhaust manifold with a reference temperature. Exhaust gas reduction device.
KR1019960035400A 1996-08-24 1996-08-24 Noxious gas reduction system of a car KR100190401B1 (en)

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