KR0181540B1 - Heating apparatus for engine cooling water of compressed natural gas vehicles - Google Patents

Heating apparatus for engine cooling water of compressed natural gas vehicles Download PDF

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Publication number
KR0181540B1
KR0181540B1 KR1019950053880A KR19950053880A KR0181540B1 KR 0181540 B1 KR0181540 B1 KR 0181540B1 KR 1019950053880 A KR1019950053880 A KR 1019950053880A KR 19950053880 A KR19950053880 A KR 19950053880A KR 0181540 B1 KR0181540 B1 KR 0181540B1
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South Korea
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sensor
engine
piezoelectric sensor
natural gas
thermoelectric
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KR1019950053880A
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Korean (ko)
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김동우
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김태구
대우자동차주식회사
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Abstract

본 발명은 압축천연가스차량의 엔진냉각수 가열장치에 관한 것으로, 연료탱크(10)에 접속된 연료라인(20)에 부착되는 압전센서(30)와, 이 압전센서(30)로부터 발생된 전하를 받아 엔진 워터재킷(60)에 저장된 냉각수를 예열시키는 열전센서(50)와, 상기 압전센서(30)와 열전센서(50)사이에 설치되어 제어부(70)의 냉각팬 구동신호에 의하여 개폐되어 압전센서(30)에서 발생한 전하를 열전센서(50)로 공급 및 차단하는 스위치(40)를 포함하여 이루어지는 것을 특징으로 하는 바, 본 발명에 의하면 별도의 외부에너지를 사용하지 않고도, 엔진의 냉각수 온도를 높여주므로써 콜드 스타트시 발생하게 되는 유해가스의 농도를 낮추고, 겨울철 엔진의 동결에 의하여 시동불량 등이 발생하게 되는 것을 보완해 줄 수 있는 등의 유용한 효과를 갖는다.The present invention relates to an engine coolant heating apparatus for a compressed natural gas vehicle, and includes a piezoelectric sensor (30) attached to a fuel line (20) connected to a fuel tank (10), and charges generated from the piezoelectric sensor (30). And a thermoelectric sensor 50 for preheating the coolant stored in the engine water jacket 60, and installed between the piezoelectric sensor 30 and the thermoelectric sensor 50 and opened and closed by a cooling fan driving signal of the controller 70. It characterized in that it comprises a switch 40 for supplying and blocking the charge generated by the sensor 30 to the thermoelectric sensor 50, according to the present invention, without using a separate external energy, the coolant temperature of the engine By lowering the concentration of harmful gases generated during cold start, there is a useful effect such as to compensate for the occurrence of starting failure due to freezing of the engine in winter.

Description

압축천연가스차량의 엔진냉각수 가열장치Engine coolant heating device for compressed natural gas vehicle

제1도는 본 발명에 따른 압축천연가스차량의 엔진냉각수 가열장치를 도시한 개략적인 구성도이다.1 is a schematic configuration diagram showing an engine coolant heating apparatus for a compressed natural gas vehicle according to the present invention.

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

10 : 연료탱크 20 : 연료라인10: fuel tank 20: fuel line

30 : 압전센서 40 : 스위치30: piezoelectric sensor 40: switch

50 : 열전센서 60 : 워터재킷50: thermoelectric sensor 60: water jacket

70 : 제어부70: control unit

본 발명은 압축천연가스차량의 엔진냉각수 가열장치에 관한 것으로, 상세히는 별도의 전력을 사용하지 않고 연료탱크에 높은 에너지상태로 저장된 연료의 압력을 이용하여 압전센서에서 전하가 발생되도록 하여 이 전하를 워터재킷에 설치된 열전센서에 인가하여 엔진냉각수의 온도를 높여줄 수 있도록 한 엔진냉각수 가열장치에 관한 것이다.The present invention relates to an engine coolant heating apparatus for a compressed natural gas vehicle. In detail, the electric charge is generated in a piezoelectric sensor using a pressure of fuel stored in a high energy state in a fuel tank without using a separate electric power. The present invention relates to an engine coolant heater that is applied to a thermoelectric sensor installed in a water jacket to increase the temperature of an engine coolant.

대부분의 자동차는 휘발유 및 경유 등의 화석연료를 사용하고 있는데, 이 화석연료는 기관내에서 연소되어 인체에 해로운 다종의 유해가스 및 미립자가 대기중으로 방출되므로써 심각한 환경문제로 대두되고 있으며, 이를 극복하기 위하여 자동차의 연료원으로 인체 및 환경에 전혀 무해한 천연가스를 사용하는 방법이 제안되어 전세계적으로 이의 연구가 활발히 진행되고 있다.Most automobiles use fossil fuels such as gasoline and diesel, and these fossil fuels are a serious environmental problem due to the combustion of various harmful gases and particulates that are harmful to humans to the atmosphere. To this end, a method of using natural gas that is completely harmless to humans and the environment as a fuel source of automobiles has been proposed, and its research is being actively conducted worldwide.

한편, 상기한 압축천연가스차량은 종래의 가솔린 또는 경유차량 및 액화석유가스를 사용하는 차량과 비교해 볼 때, 연료의 저장상태가 전혀 다른 방식 즉, 종래에는 연료가 액체상태로 연료탱크내에 저장된 상태이고, 압축천연가스는 기체상태 그대로 200-300bar정도의 고압으로 압축저장되는 현저한 특성을 갖는다.On the other hand, the compressed natural gas vehicle is compared with a conventional gasoline or diesel vehicle and a vehicle using liquefied petroleum gas, the state of storage of fuel is completely different, that is, conventionally stored fuel in a liquid state in the fuel tank Compressed natural gas has a significant characteristic of being compressed and stored at a high pressure of about 200-300 bar as it is in a gaseous state.

본 발명은 이러한 점을 감안하여 연료탱크내에 높은 에너지상태로 저장된 천연가스의 압력을 그대로 방치하지 않고, 이의 용도를 확장시키기 위하여 인출된 것이고, 통상 수냉식 냉각장치를 탑재한 자동차는 엔진이 가열되지 않는 상태에서 시동하였을 경우 즉, 콜드 스타트(Cold Start)시에 유해성분을 다량함유한 배기가스가 발생하는 것을 고려하여 상기 연료탱크내에 높은 에너지 상태로 저장된 연료압을 열에너지로 변환하여 엔진냉각수를 예열시켜줄 수 있도록 하는 수단을 제공하는 데 있는 것이다.In view of the above, the present invention is drawn out to expand its use without leaving the pressure of natural gas stored in a high energy state in a fuel tank as it is, and a vehicle equipped with a water-cooled cooling device does not normally heat an engine. In the case of starting in the state, that is, in consideration of the generation of exhaust gas containing a large amount of harmful components at the cold start, the fuel pressure stored in the high energy state in the fuel tank is converted into thermal energy to preheat the engine coolant. It is to provide the means to make it possible.

이와 같은 목적을 달성하기 위하여 본 발명은 연료탱크에 기체상태로 압축저장된 연료압에 의하여 전하를 발생시키는 압전센서를 연료라인상에 설치하고, 이 압전센서에서 발생된 전하는 엔진 워터재킷에 설치된 열전센서로 전달되도록 하므로써 연료탱크내의 연료압력을 이용하여 엔진 냉각수를 예열시켜줄 수 있도록 한 압축천연가스차량의 엔진냉각수 가열장치를 제공한 것으로, 이하, 첨부된 도면에 의하여 본 발명의 구성 및 작용 효과를 상세히 설명하기로 한다.In order to achieve the above object, the present invention provides a piezoelectric sensor that generates charge by fuel pressure compressed and stored in a gaseous state in a fuel tank on a fuel line, and the electric charge generated by the piezoelectric sensor is installed in an engine water jacket. By providing the engine coolant heating device for a compressed natural gas vehicle to preheat the engine coolant by using the fuel pressure in the fuel tank to be delivered to the present invention, the configuration and effect of the present invention in detail with reference to the accompanying drawings. Let's explain.

본 발명의 엔진냉각수 가열장치 제1도에 도시한 바와 같이, 연료탱크(10)로부터 엔진으로 공급되는 연료라인(20)에 부착되는 압전센서(30)와, 이 압전센서(30)로부터 발생된 전하를 받아 엔진의 워터재킷(60)에 저장된 냉각수를 예열시키는 열전센서(50)로 구성된 특징을 갖는다.As shown in FIG. 1 of the engine coolant heater of the present invention, the piezoelectric sensor 30 is attached to the fuel line 20 supplied from the fuel tank 10 to the engine, and generated from the piezoelectric sensor 30. It receives a charge and has a feature consisting of a thermoelectric sensor 50 for preheating the coolant stored in the water jacket 60 of the engine.

상기 압전센서(30)와 열전센서(50)사이에는 압전센서(30)에서 발생한 전하가 열전센서(50)로 전달되는 것을 차단할 수 있는 스위치(40)를 설치하고, 이 스위치(40)는 제어부(70)로 부터의 신호, 즉 냉각수 온도센서(80)에 의하여 감지된 냉각수의 온도가 설정치 이상의 온도로 상승하였을 때 발생하는 냉각팬 구동신호에 의하여 차단되도록 하고, 냉각수가 설정치 이하의 온도로 되었을 경우에는 다시 압전센서(30)로부터 발생한 전하가 열전센서(50)로 인가되도록 한다.Between the piezoelectric sensor 30 and the thermoelectric sensor 50 is provided with a switch 40 that can block the transfer of the charge generated from the piezoelectric sensor 30 to the thermoelectric sensor 50, the switch 40 is a control unit The signal from 70, that is, the coolant detected by the coolant temperature sensor 80 is cut off by the cooling fan drive signal generated when the temperature rises above the set value, and the coolant has reached a temperature below the set value. In this case, the charge generated from the piezoelectric sensor 30 is applied to the thermoelectric sensor 50 again.

이와 같이 구성된 본 발명은 연료탱크(10)내에 충전된 압축가스의 압력에너지를 압전센서(30)에서 받아 그에 비례하는 만큼의 전하를 발생하여 열전센서(50)를 작동시키게 되고, 열전센서(50)에서 발생한 열은 워터재킷(60)내부에 저장된 냉각수를 가열시키게 되는 것이다.The present invention configured as described above receives the pressure energy of the compressed gas charged in the fuel tank 10 from the piezoelectric sensor 30 to generate charges proportional thereto, thereby operating the thermoelectric sensor 50, and the thermoelectric sensor 50. The heat generated in) heats the cooling water stored in the water jacket 60.

이처럼 본 발명의 냉각수 가열장치는 엔진의 시동전 및 엔진의 시동 후 엔진이 충분히 예열되기 전까지 작동하여 냉각수의 온도를 상승시키는 역할을 하게 되는 것으로, 압전센서(30)가 연료탱크(10)내에 충전된 연료의 압력을 받아 전하를 발생하게 되어 이를 열전센서(50)에 공급하여 냉각수를 가열시키게 되며, 엔진이 시동되어 소정의 시간이 경과하게 되면 엔진이 고열로 가열되고 이에 따라 냉각수의 온도도 높아지게 되는 것이며, 냉각수의 온도가 설정온도이상으로 가열된 경우에는 이를 온도센서(80)가 감지하여 제어부(70)에 신호를 발송하게 되면 제어부(70)에서는 냉각팬 구동신호를 발생하게 되어 도시안된 냉각팬을 회전시킴과 동시에 스위치(40)를 차단시켜 압전센서(30)에서 열전센서(50)로 인가되는 전하를 차단시키게 되는 것이다.As described above, the cooling water heater of the present invention operates before the engine is sufficiently warmed up before the engine is started and after the engine is started to increase the temperature of the cooling water. The piezoelectric sensor 30 is charged in the fuel tank 10. Electric charge is generated by receiving the pressure of the supplied fuel and supplied to the thermoelectric sensor 50 to heat the coolant. When the engine is started and a predetermined time elapses, the engine is heated to a high temperature and accordingly the temperature of the coolant is increased. If the temperature of the coolant is heated above the set temperature, the temperature sensor 80 detects this and sends a signal to the control unit 70. The control unit 70 generates a cooling fan driving signal to generate a cooling fan. At the same time the fan is rotated to cut off the switch 40 to cut off the charge applied to the thermoelectric sensor 50 from the piezoelectric sensor 30.

상기한 바와 같이 본 발명의 냉각수 가열장치는 높은 에너지상태로 저장된 연료탱크내의 압축가스를 이용하여 엔진의 냉각수온도를 높여주게 되므로써 엔진의 콜드 스타트시 발생하게 되는 배기가스중의 유해성분을 저감시킬 수 있는 것이다.As described above, the cooling water heater of the present invention increases the cooling water temperature of the engine by using the compressed gas in the fuel tank stored in a high energy state, thereby reducing harmful components in the exhaust gas generated during cold start of the engine. It is.

이상 설명한 바와 같이, 본 발명은 연료탱크에 접속된 연료라인에 부착되는 압전센서와, 이 압전센서로부터 발생된 전하를 받아 엔진 워터재킷의 냉각수를 가열시키는 열전센서로 구성된 것으로, 본 발명에 의하면 별도의 외부에너지를 사용하지 않고도, 엔진의 냉각수 온도를 높여주므로써 콜드 스타트시 발생하게 되는 유해가스의 농도를 낮추고, 겨울철 엔진의 동결에 의하여 시동불량 등이 발생하게 되는 것을 보완해 줄 수 있는 등의 유용한 효과를 갖는다.As described above, the present invention is composed of a piezoelectric sensor attached to the fuel line connected to the fuel tank, and a thermoelectric sensor for receiving the electric charge generated from the piezoelectric sensor and heating the cooling water of the engine water jacket. By increasing the coolant temperature of the engine without using external energy, the concentration of harmful gases generated during cold start can be reduced, and the start-up failure can be compensated for by the freezing of the engine in winter. Has a useful effect.

Claims (1)

연료탱크(10)에 접속된 연료라인(20)에 부착되는 압전센서(30)와, 이 압전센서(30)로부터 발생된 전하를 받아 엔진 워터재킷(60)에 저장된 냉각수를 예열시키는 열전센서(50)와, 상기 압전센서(30)와 열전센서(50)사이에 설치되어 제어부(70)의 냉각팬 구동신호에 의하여 개폐되어 압전센서(30)에서 발생한 전하를 열전센서(50)로 공급 및 차단하는 스위치(40)를 포함하여 이루어지는 것을 특징으로 하는 압축천연가스차량의 엔진냉각수 가열장치.A piezoelectric sensor 30 attached to the fuel line 20 connected to the fuel tank 10 and a thermoelectric sensor for preheating the coolant stored in the engine water jacket 60 by receiving electric charges generated from the piezoelectric sensor 30 ( 50 and the piezoelectric sensor 30 and the thermoelectric sensor 50 are installed and opened and closed by the cooling fan driving signal of the controller 70 to supply the electric charge generated by the piezoelectric sensor 30 to the thermoelectric sensor 50. Engine coolant heating device for a compressed natural gas vehicle, characterized in that comprises a switch for shutting off.
KR1019950053880A 1995-12-22 1995-12-22 Heating apparatus for engine cooling water of compressed natural gas vehicles KR0181540B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037465A (en) * 2000-11-14 2002-05-22 류정열 Fuel Heating Equipment of Diesel Engine
WO2013191467A1 (en) * 2012-06-22 2013-12-27 에스케이이노베이션 주식회사 Water discharge system for oil reserve tank

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037465A (en) * 2000-11-14 2002-05-22 류정열 Fuel Heating Equipment of Diesel Engine
WO2013191467A1 (en) * 2012-06-22 2013-12-27 에스케이이노베이션 주식회사 Water discharge system for oil reserve tank
US9920667B2 (en) 2012-06-22 2018-03-20 Sk Innovation Co., Ltd. Water drain system for oil reserve tank

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