KR100210168B1 - Apparatus for detecting enzyme performance in cng car - Google Patents
Apparatus for detecting enzyme performance in cng car Download PDFInfo
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- KR100210168B1 KR100210168B1 KR1019960055764A KR19960055764A KR100210168B1 KR 100210168 B1 KR100210168 B1 KR 100210168B1 KR 1019960055764 A KR1019960055764 A KR 1019960055764A KR 19960055764 A KR19960055764 A KR 19960055764A KR 100210168 B1 KR100210168 B1 KR 100210168B1
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Abstract
본 발명은 혼합기의 희박연소 영역에 있어서 HC의 정화율이 급격히 저하되는 원인을 규명하고, 궁극적으로는 배기가스 정화율의 극대화에 기여할 수 있는 CNG차량의 촉매성능 검출장치를 제공하기 위하여 CH4, NO, CO, H2, O2, N2등 다종의 가스가 각각 채워지는 다수의 봄베(2)로부터 배출되는 다종의 가스배출량을 조절하여 임의의 농도로 혼합시키며, 물을 베이포라이져(12)에서 기화시켜 상기 혼합가스 중에 중에 혼합시켜 소정의 모델가스를 제공하게 되는 가스공급부(4)와; 상기 가스공급부(4)로부터 공급되는 모델가스를 반응온도에 까지 가열시키는 예열부(10)와; 상기 예열부(10)에서 소정 온도로 가열된 모델가스가 촉매와 반응되는 반응부(14)와; 상기 반응부(14)에서 촉매와 반응된 모델가스 중의 산소농도를 측정하여 산소농도의 측정치에 따라 촉매의 성능을 검출 표시하는 가스분석기(16)를 포함하도록 구성한 것이다.The invention CH 4 to determine the cause that purification rate of HC is significantly decreased in the lean burn region of the mixer, and, ultimately, to provide a catalyst performance detecting device of the CNG vehicle that can contribute to the maximization of the exhaust gas purification rate, The amount of gas discharged from a plurality of bombs 2 filled with various gases such as NO, CO, H 2 , O 2 and N 2 is adjusted and mixed at an arbitrary concentration, A gas supply part 4 which is vaporized in the gas mixture to mix the gas mixture into the mixed gas to provide a predetermined model gas; A preheating unit 10 for heating the model gas supplied from the gas supply unit 4 to a reaction temperature; A reaction unit 14 in which a model gas heated to a predetermined temperature is reacted with the catalyst in the preheating unit 10; And a gas analyzer 16 for measuring the oxygen concentration in the model gas reacted with the catalyst in the reaction part 14 and detecting and indicating the performance of the catalyst according to the measured value of the oxygen concentration.
Description
본 발명은 CNG차량의 촉매성능 검출장치에 관한 것으로서, 보다 상세하게는 압축천연가스를 사용하는 CNG차량의 배기가스를 정화시키는 촉매의 성능을, 모델가스를 이용하여 검출하는 CNG차량의 촉매성능 검출장치에 관한 것이다.The present invention relates to a catalyst performance detecting apparatus for a CNG vehicle, and more particularly, to a catalyst performance detecting apparatus for a CNG vehicle that detects the performance of a catalyst for purifying exhaust gas of a CNG vehicle using compressed natural gas, ≪ / RTI >
차량을 구동하기 위한 엔진은 흡기장치에 의해 공기가 흡입되는 연소실로, 연료장치에 의해 연료가 공급되도록 하여 연소실내에 형성되는 혼합기의 연소 폭발에 따라 차량을 주행시키기 위한 구동력을 발한다.An engine for driving a vehicle is supplied with fuel by a fuel device to a combustion chamber in which air is sucked by an intake device, and generates a driving force for driving the vehicle in accordance with a combustion explosion of a mixer formed in the combustion chamber.
특히, CNG가스를 연료로 사용하는 차량에 채용되는 연료장치는 엔진의 실린더헤드에 각 연소실과 연통하는 믹서가 설치되고, 이 믹서에 베이퍼라이저와 솔레노이드밸브와 필터유닛, 그리고 봄베가 연료호스로 연결되어 봄베에 충진된 CNG가스가 공기와 혼합된 상태로 연소실에 공급되는 구조로 구성되어 있다.Particularly, a fuel device employed in a vehicle using CNG gas as a fuel is provided with a mixer communicating with each combustion chamber in a cylinder head of an engine, and a bypass valve, a solenoid valve, a filter unit, and a cylinder are connected to the mixer by a fuel hose And the CNG gas filled in the cylinder is supplied to the combustion chamber while being mixed with the air.
한편, 상기 연소실에서 연소되어 배기장치를 통해 배출되는 배기가스는 다량의 유해물질이 함유되어 있어 대기오염의 주요 원인이 되기 때문에 엔진의 배기포트에 연통 연결되는 상기 배기관에 촉매컨버어터를 설치하여 배기가스에 함유된 유해물질을 중화시킨다.On the other hand, since the exhaust gas that is burned in the combustion chamber and discharged through the exhaust device contains a large amount of harmful substances and is a major cause of air pollution, a catalytic converter is installed in the exhaust pipe connected to the exhaust port of the engine, It neutralizes harmful substances contained in gas.
상기한 바와 같은 촉매컨버어터는 가스 속의 CO와 HC를 CO2와 H2O로 산화시키는 산화촉매방식과, 가스 속의 NOx를 N2와 CO2로 환원시키는 환원방식, 그리고 가스 속의 CO, HC, NOx를 하나의 촉매로 동시에 처리하는 3원촉매방식이 알려져 있으며, 보통 담체 표면에 백금 등의 귀금속으로 된 촉매를 부착시켜 촉매로 하여금 배기가스에 함유된 유해성분을 중화시킬 수 있도록 하고 있다.The above-mentioned catalytic converter includes an oxidation catalyst system for oxidizing CO and HC in the gas to CO 2 and H 2 O, a reduction system for reducing NO x in the gas to N 2 and CO 2 , , And NO x are simultaneously treated with a single catalyst. A three-way catalyst system in which NO x is simultaneously treated with one catalyst is known, and a catalyst made of a noble metal such as platinum or the like is attached to the surface of the carrier, so that the catalyst can neutralize the harmful components contained in the exhaust gas .
이와 같은 배기가스의 정화작용을 행하도록 구성된 CNG차량은 혼합기의 희박연소 영역에 있어서 HC의 정화율이 급격히 저하되는 것으로 알려져 있으며, 근래 들어 그 원인을 규명하여 배기가스의 정화율을 극대화시키기 위해 촉매의 성능을 시험 검출할 수 있는 수단의 강구가 요구되고 있다.In the CNG vehicle configured to perform the purifying action of the exhaust gas, it is known that the purification rate of the HC sharply decreases in the lean burn region of the mixer. In recent years, in order to maximize the purification rate of the exhaust gas, It is required to provide means for testing and detecting the performance of the apparatus.
본 발명은 상기한 바와 같은 종래의 요구에 부응하기 위하여 안출된 것으로서, 본 발명의 목적은 모델가스를 이용하여 CNG차량의 배기가스를 정화시키는 촉매의 성능을 시험 검출함으로써, 혼합기의 희박연소 영역에 있어서 HC의 정화율이 급격히 저하되는 원인을 규명하고, 궁극적으로는 배기가스 정화율의 극대화에 기여할 수 있는 CNG차량의 촉매성능 검출장치를 제공하는데 있다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for controlling the performance of a catalyst for purifying exhaust gas of a CNG vehicle using a model gas, And a catalyst performance detecting device for detecting the catalyst performance of the CNG vehicle, which can ultimately contribute to maximizing the exhaust gas purification rate.
도1은 본 발명에 의한 CNG차량의 촉매성능 검출장치를 개략적으로 나타내는 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view schematically showing an apparatus for detecting a catalytic performance of a CNG vehicle according to the present invention. Fig.
* 도면의 주요 부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS
2 : 봄베 4 : 가스공급부2: cylinder 4: gas supply unit
10 : 예열부 12 : 베이포라이져10: Preheating part 12:
14 : 반응부 16 : 가스분석기14: Reactor 16: Gas analyzer
이를 실현하기 위하여 본 발명은 CH4, NO, CO, H2, O2, N2등 다종의 가스가 각각 채워지는 다수의 봄베와, 이 다수의 봄베로부터 배출되는 다종의 가스배출량을 조절하여 임의의 농도로 혼합시키며, 물을 베이포라이저에서 기화시켜 상기 혼합가스 중에 혼합시켜 소정의 모델가스를 제공하는 가스공급부와; 상기 가스공급부로부터 공급되는 모델가스를 반응온도로 가열시키는 예열부와; 상기 예열부에서 소정 온도로 가열된 모델가스가 촉매 반응되는 반응부와; 상기 반응부에서 촉매와 반응된 모델가스 중의 산소농도를 측정하여 산소농도의 측정치에 따라 촉매의 성능을 검출하는 가스분석기를 포함하는 구성으로 이루어진 CNG차량의 촉매성능 검출장치를 제공하는데 있다.In order to achieve this, the present invention provides a gas turbine comprising a plurality of bombs filled with various gases such as CH 4 , NO, CO, H 2 , O 2 , N 2 and the like, A gas supply part for vaporizing water in a baffle riser and mixing the mixture gas into the mixed gas to provide a predetermined model gas; A preheating unit for heating the model gas supplied from the gas supply unit to a reaction temperature; A reaction part in which a model gas heated to a predetermined temperature is catalytically reacted in the preheating part; And a gas analyzer for measuring the oxygen concentration in the model gas reacted with the catalyst in the reaction unit and detecting the performance of the catalyst according to the measured value of the oxygen concentration.
또한 본 발명은, 상기한 가스공급부와 예열부 및 반응부, 그리고 가스분석기를 잇는 관로의 소정부에 다수의 솔레노이드밸브가 설치되고, 이 다수의 솔레노이드밸브의 열리는 정도 및 상기 예열부와 반응부의 작용을 제어함과 아울러, 상기 가스분석기로부터 검출되는 산소농도에 따른 검출치를 표시할 수 있는 제어부가 더욱 포함되는 구성으로 이루어짐을 특징으로 한다.Further, the present invention is characterized in that a plurality of solenoid valves are provided in the pre-heating section, the preheating section, the reaction section, and the pre-heater section of the duct connecting the gas analyzer, and the degree of opening of the plurality of solenoid valves, The gas analyzer may further include a controller capable of displaying a detection value according to an oxygen concentration detected from the gas analyzer.
상기한 바와 같은 구성에 따라 제어부에 의해 봄베의 솔레노이드 밸브들이 제어되어 열리면 다수의 봄베로부터 적당한 양으로 CH4, NO, CO, H2, O2, N2등의 가스가 배출되어 관로 중에서 혼합되고, 이러한 혼합가스중에 베이포라이져에서 기화된 수분이 더욱 혼합된 소정의 모델가스가 예열부에 공급된다.When the solenoid valves of the cylinder are opened and controlled by the control unit, the gases such as CH 4 , NO, CO, H 2 , O 2 and N 2 are discharged from a plurality of cylinders in an appropriate amount, , And a predetermined model gas in which moisture vaporized in the baffle riser is further mixed in the mixed gas is supplied to the preheating section.
상기한 바와 같이 예열부로 공급된 모델가스는 소정의 온도로 가열되고, 반응부로 공급되어 반응부의 촉매와 반응되며, 반응된 후의 모델가스는 가스분석기에서 산소농도가 측정된다. 상기 가스분석기에서 측정된 산소농도는 제어부로 출력되어 표시됨으로써, 모델가스에 대한 촉매의 성능을 쉽게 인지할 수 있게 되는 것이다.As described above, the model gas supplied to the preheating section is heated to a predetermined temperature, supplied to the reaction section and reacted with the catalyst in the reaction section, and the oxygen concentration of the model gas after the reaction is measured in the gas analyzer. The oxygen concentration measured by the gas analyzer is outputted to the controller and displayed, so that the performance of the catalyst with respect to the model gas can be easily recognized.
이하, 본 발명의 바람직한 실시예를 첨부한 도면에 따라서 더욱 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도1은 본 발명에 의한 CNG차량의 촉매성능 검출장치의 일 실시예를 나타내는 도면으로서, CH4, NO, CO, H2, O2, N2등 다종의 가스가 각각 채워지는 다수의 봄베(2)를 보유하는 가스공급부(4)가 구성되어 있다.1 is a view showing an embodiment of an apparatus for detecting a catalytic performance of a CNG vehicle according to the present invention. The apparatus includes a plurality of cylinders (not shown) filled with various gases such as CH 4 , NO, CO, H 2 , O 2 and N 2 2 is provided in the gas supply part 4.
상기 다수의 봄베(2)는 솔레노이드밸브(SV)를 갖는 관로(P)로 예열부(10)와 연결되어 있어 상기 관로(P)를 통하는 모델가스를 임의의 온도로 예열시킬 수 있고, 상기 솔레노이드밸브(SV)는 제어부(C)에 의해 그 열림량이 제어되는 상태로 작동하여 봄베(2)로부터 배출되는 배출가스의 배출량을 조절하게 된다.The plurality of bombs 2 are connected to the preheater 10 by a conduit P having a solenoid valve SV to preheat the model gas passing through the conduit P to an arbitrary temperature, The valve SV operates in a state in which the opening amount of the valve SV is controlled by the control portion C so as to control the discharge amount of the exhaust gas discharged from the cylinder 2.
또, 상기 봄베(2)에서 연결되는 관로(P)에는 베이포라이져(12)가 연결되어 있어 상기 베이포라이져(12)에서 기화된 수분이 혼합가스 중에 포함되는 소정의 모델가스를 제공하게 된다.A baffle riser 12 is connected to the conduit P connected to the bomb 2 so that moisture vaporized in the baffle riser 12 provides a predetermined model gas contained in the mixed gas .
한편, 상기한 바와 같이 예열부(10)에서 소정 온도로 가열된 모델가스가 촉매와 반응되는 반응부(14)가 구성되어 있고, 이와 같은 반응부(14)는 촉매와 반응된 모델가스 중의 산소농도를 측정하여 산소농도의 측정치에 따라 촉매의 성능을 검출 표시하는 가스분석기(16)와 연결되어 있다.As described above, the reaction unit 14, in which the model gas heated to a predetermined temperature by the preheating unit 10 is reacted with the catalyst, is constructed as described above. The reaction unit 14 includes oxygen And is connected to a gas analyzer 16 for detecting and displaying the performance of the catalyst according to the measured value of the oxygen concentration.
상기한 바와 같은 바와 같은 구성에 따라 제어부(C)에 의해 봄베(2)의 솔레노이드 밸브(SV)들이 제어되어 열리면 다수의 봄베(2)로부터 적당한 양으로 CH4, NO, CO, H2, O2, N2등의 가스가 배출되어 관로(P) 중에서 혼합된다.It opens the solenoid valve (SV) of the cylinder (2) by the controller (C) according to the same configuration are controlled as appropriate amount from a plurality of cylinders (2) as described above, with CH 4, NO, CO, H 2, O 2 , N 2, and the like are discharged and mixed in the pipe P.
이러한 혼합가스중에 베이포라이져(12)에서 기화된 수분이 더욱 혼합된 소정의 모델가스로 예열부(10)에 적당한 양(이를테면 0℃의 대기압 상태로 환산된 모델가스량을 촉매용량으로 나눈 60,000/h의양)으로 공급되며, 상기한 바와 같이 예열부(10)로 공급된 모델가스는 소정의 온도(이를테면 400℃)로 가열된 후 반응부(14)로 공급된다.In this mixed gas, a predetermined amount of the model gas, which is further mixed with moisture vaporized in the baffle riser 12, is introduced into the preheating section 10 in an appropriate amount (for example, the amount of the model gas converted into the atmospheric pressure state at 0 캜 divided by the catalyst capacity, h). As described above, the model gas supplied to the preheating unit 10 is heated to a predetermined temperature (for example, 400 ° C) and then supplied to the reaction unit 14.
따라서 상기 예열된 모델가스는 반응부(14)의 촉매와 반응되고, 반응된 후의 모델가스는 가스분석기(16)에서 산소농도가 측정 표시됨으로써, 모델가스에 대한 촉매의 성능을 쉽게 인지할 수 있게 되는 것이다.Therefore, the preheated model gas is reacted with the catalyst of the reaction part 14, and the model gas after the reaction is measured and displayed by the gas analyzer 16 so that the performance of the catalyst for the model gas can be easily recognized .
상기한 바와 같은 본 발명에 의한 CNG차량의 촉매성능 검출장치는 모델가스를 이용하여 CNG차량의 배기가스를 정화시키는 촉매의 성능을 시험 검출함으로써, 혼합기의 희박연소 영역에 있어서 HC의 정화율이 급격히 저하되는 원인을 규명하고, 궁극적으로는 배기가스 정화율의 극대화에 기여할 수 있는 이점이 있다.The apparatus for detecting the catalytic performance of a CNG vehicle according to the present invention as described above can test and detect the performance of a catalyst for purifying the exhaust gas of a CNG vehicle using a model gas so that the HC purifying ratio in the lean burn region of the mixer It is possible to identify the cause of deterioration and ultimately to contribute to maximization of the exhaust gas purification rate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960055764A KR100210168B1 (en) | 1996-11-20 | 1996-11-20 | Apparatus for detecting enzyme performance in cng car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960055764A KR100210168B1 (en) | 1996-11-20 | 1996-11-20 | Apparatus for detecting enzyme performance in cng car |
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| KR19980037068A KR19980037068A (en) | 1998-08-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100731149B1 (en) * | 2006-06-20 | 2007-06-22 | 주식회사 하이젠 | A catalytic performance test equipments |
| KR100820457B1 (en) | 2006-08-30 | 2008-04-10 | 현대자동차주식회사 | System for test catalyst for diesel vehicle |
| KR101275507B1 (en) | 2007-04-05 | 2013-06-20 | 에스케이이노베이션 주식회사 | Multi Channel Reaction System |
| CN105067551A (en) * | 2015-07-09 | 2015-11-18 | 无锡威孚环保催化剂有限公司 | Fourier infrared automobile exhaust evaluation system |
-
1996
- 1996-11-20 KR KR1019960055764A patent/KR100210168B1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100731149B1 (en) * | 2006-06-20 | 2007-06-22 | 주식회사 하이젠 | A catalytic performance test equipments |
| KR100820457B1 (en) | 2006-08-30 | 2008-04-10 | 현대자동차주식회사 | System for test catalyst for diesel vehicle |
| KR101275507B1 (en) | 2007-04-05 | 2013-06-20 | 에스케이이노베이션 주식회사 | Multi Channel Reaction System |
| CN105067551A (en) * | 2015-07-09 | 2015-11-18 | 无锡威孚环保催化剂有限公司 | Fourier infrared automobile exhaust evaluation system |
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| Publication number | Publication date |
|---|---|
| KR19980037068A (en) | 1998-08-05 |
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