KR200173920Y1 - Apparatus for detecting abnormal combustion for hydrogen engines - Google Patents

Apparatus for detecting abnormal combustion for hydrogen engines Download PDF

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Publication number
KR200173920Y1
KR200173920Y1 KR2019960054026U KR19960054026U KR200173920Y1 KR 200173920 Y1 KR200173920 Y1 KR 200173920Y1 KR 2019960054026 U KR2019960054026 U KR 2019960054026U KR 19960054026 U KR19960054026 U KR 19960054026U KR 200173920 Y1 KR200173920 Y1 KR 200173920Y1
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South Korea
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hydrogen engine
hydrogen
sensor
engine
oxygen sensor
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KR2019960054026U
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Korean (ko)
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KR19980040945U (en
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이석재
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정몽규
현대자동차주식회사
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Publication of KR19980040945U publication Critical patent/KR19980040945U/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D19/00Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/025Failure diagnosis or prevention; Safety measures; Testing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00Special features of vehicle units
    • B60Y2400/90Driver alarms

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

본 고안의 목적은 수소엔진의 연소 상태가 불안하거나 실화 또는 인젝터의누설등의 문제 발생시 이를 검출하여 운전자에게 알려주는 수소엔진의 비정상 연소감지장치를 제공하는 데 있다.It is an object of the present invention to provide an abnormal combustion detection device for a hydrogen engine that detects and informs a driver when a combustion engine is unstable or a problem such as misfire or injector leakage occurs.

상기한 목적을 달성하기 위한 본 고안은 수소를 연료로 사용하는 수소엔진에 있어서, 상기 수소엔진의 배기관에 설치되는 산소센서(O2센서)와; 상기 산소센서로부터의 출력 전압값이 기준치 이상일 때 신호를 출력하는 전자제어장치와; 상기 전자제어장치의 신호 출력이 있을때 점등되는 경고등과; 를 포함하여 구성되는 것을 특징으로 한다.The present invention for achieving the above object in the hydrogen engine using a fuel, the oxygen sensor (O 2 sensor) installed in the exhaust pipe of the hydrogen engine; An electronic controller for outputting a signal when an output voltage value from the oxygen sensor is equal to or greater than a reference value; A warning light that is turned on when there is a signal output of the electronic controller; Characterized in that comprises a.

Description

수소엔진의 비정상 연소감지장치Abnormal combustion detection device of hydrogen engine

본 고안은 수소엔진의 비정상 연소감지장치에 관한 것이다.The present invention relates to an abnormal combustion detection device of a hydrogen engine.

수소엔진은 수소를 연료로 사용하기 때문에 가솔린 엔진과 달리 산소센서(O2센서)에 의한 공연비의 제어를 하지 않으므로 O2센서가 구비되어 있지 않다.The hydrogen engine does not control the air-fuel ratio by the oxygen sensor (O 2 sensor), unlike the gasoline engine because it uses hydrogen as a fuel, it is not equipped with an O 2 sensor.

그러나 수소엔진은 공연비의 피드백 제어를 실행하지 않기 때문에 수소엔진의 연소 상태가 불안하거나 실화가 발생하거나 또는 인젝터의 가스누설등의 문제가 발생할 경우 이를 감지할 수 없다는 문제점이 있다.However, since the hydrogen engine does not perform the feedback control of the air-fuel ratio, there is a problem in that the combustion state of the hydrogen engine is unstable, misfire, or a gas leak of the injector cannot be detected.

이에 본 고안은 상기한 문제점을 감안하여 제안된 것으로서 그의 목적으로 하는 바는 수소엔진의 연소 상태가 불안하거나 실화 또는 인젝터의 누설등의 문제발생시 이를 검출하여 운전자에게 알려주는 수소엔진의 비정상 연소감지장치를 제공하는 데 있다.Therefore, the present invention has been proposed in view of the above problems, and its purpose is to detect an abnormal combustion device of a hydrogen engine to detect and notify a driver when a problem such as an unstable combustion state of a hydrogen engine or a misfire or an injector leaks. To provide.

상기한 목적을 달성하기 위하여 본 고안은 수소를 연료로 사용하는 수소엔진에 있어서, 상기 수소엔진의 배기관에 설치되는 산소센서(O2센서)와; 상기 산소센서로부터의 출력 전압값이 기준치 이상일 때 신호를 출력하는 전자제어장치와; 상기 전자제어장치의 신호 출력이 있을때 점등되는 경고등과; 를 포함하여 구성되는 것을 특징으로 한다.In order to achieve the above object, the present invention is a hydrogen engine using hydrogen as a fuel, an oxygen sensor (O 2 sensor) installed in the exhaust pipe of the hydrogen engine; An electronic controller for outputting a signal when an output voltage value from the oxygen sensor is equal to or greater than a reference value; A warning light that is turned on when there is a signal output of the electronic controller; Characterized in that comprises a.

제1도는 본 고안에 의한 수소엔진의 비정상 연소감지장치.1 is an abnormal combustion detection apparatus for a hydrogen engine according to the present invention.

제2도는 본 고안의 동작 흐름도.2 is an operation flowchart of the present invention.

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

1 : 수소엔진 2 : 배기관1: hydrogen engine 2: exhaust pipe

3 : 산소센서 4 : 전자제어장치3: oxygen sensor 4: electronic control device

5 : 경보등5: alarm light

이하 본 고안의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings the configuration and operation of the present invention.

제1도는 본 고안에 의한 구성도이며 제2도는 본 고안의 작동 흐름도이다.1 is a configuration diagram according to the present invention and FIG. 2 is an operation flowchart of the present invention.

도면중 부호 1은 수소엔진이며 부호 2는 배기가스를 배출하는 배기관이다.In the drawing, reference numeral 1 denotes a hydrogen engine and reference numeral 2 denotes an exhaust pipe for exhausting exhaust gas.

상기 배기관(2)의 도중에는 배출되는 배기가스중의 산소 농도를 검출하기 위한 O2센서(3)가 설치되어 있으며 O2센서(3)는 산소 농도를 전기적 신호, 예를들면 전압값으로 출력하게 된다.In the middle of the exhaust pipe 2, an O 2 sensor 3 is installed for detecting the oxygen concentration in the exhaust gas discharged, and the O 2 sensor 3 outputs the oxygen concentration as an electrical signal, for example, a voltage value. do.

이 산소센서(3)로부터의 출력신호는 전자제어장치(4)에 인가되며 전자제어장치(4)는 입력된 전압값과 기준치와를 비교하여 경보등(5)을 온·오프 제어하게 된다.The output signal from the oxygen sensor 3 is applied to the electronic controller 4, and the electronic controller 4 compares the input voltage value with a reference value to control the alarm lamp 5 on and off.

이하에 제2도의 작동 흐름도에 의해 경보등의 작동과정을 상술한다.The operation of the alarm lamp will be described in detail below by the operation flowchart of FIG.

엔진이 구동되면(단계 가) 전자제어장치(4)는 초기화 상태로 복귀하여 제어 로직을 실행하게 되며 산소센서(3)로부터 출력되는 신호값의 입력을 기다려 산소센서(3)의 출력전압 VO2가 기준치보다 작은값인가 또는 큰값인가를 비교한다. (단계 나) 이는 산소센서(3)의 기능이 배기가스중에 산소가 존재하면 출력전압이 OV이고 산소가 희박한 경우 0.5-1.0V 사이의 값을 출력하게 되므로 정상적인 경우 수소엔진은 이론 공연비(14.7:1) 또는 희박 연소를 하여야 하므로 산소센서(3)의 출력값은 OV 부근이어야 한다.When the engine is driven (step a), the electronic controller 4 returns to the initial state to execute the control logic and waits for the input of the signal value output from the oxygen sensor 3 to output the voltage VO 2 of the oxygen sensor 3. Compares whether the value is less than or greater than the reference value. (Step b) This means that the function of the oxygen sensor 3 is to output a value between OV and 0.5 to 1.0V when oxygen is present in the exhaust gas. 1) Alternatively, the lean burn must be performed, so the output of the oxygen sensor (3) should be near OV.

따라서 예를들어 가장 적절한 기준값을 0.3V로 설정한 후 O2센서 출력값이 0.3V 이상 높아지는 경우 배기가스중에 미연 수소가 존재하는 것이므로 상기 단계 (나)에서 출력값이 기준치 이상으로 검출되었다면 전자제어장치(4)는 엔진(1)의 이상이 있는 것으로 판정하여(단계 다) 신호 출력에 의해 경보등(5)에 전원을 공급하여 점등시키게 된다. (단계 라)Therefore, for example, if the O 2 sensor output value is higher than 0.3V after setting the most appropriate reference value to 0.3V, unburned hydrogen is present in the exhaust gas. 4) determines that there is an abnormality in the engine 1 (step c), and supplies power to the alarm lamp 5 by the signal output and turns it on. (Step d)

그러나 만일 O2센서의 출력 전압값이 기준치, 예를들면 0.3V 이하라면 전자제어장치(4)는 정상 판정하고(단계 마) 단계(나)로 돌아가 앞선 과정들을 반복하게 된다.However, if the output voltage value of the O 2 sensor is equal to or less than a reference value, for example, 0.3V, the electronic controller 4 determines normal operation (step e) and returns to step (b) to repeat the foregoing processes.

이와같이 하여 경고등(5)이 점등되면 운전자는 엔진의 정비등을 통하여 고장원인을 제거하게 된다.When the warning lamp 5 is turned on in this way, the driver eliminates the cause of failure through the maintenance lamp of the engine.

이상과 같은 본 고안에 의하면 수소엔진의 연소 상태가 불안정하거나 실화가 발생하거나 또는 인젝터의 누설이 있을시 이를 배기관에 설치된 O2센서의 출력 전압값의 이상으로 감지하여 경보등을 점등토록 하므로써 엔진의 이상유무를 손쉽게 알 수 있게 되는 효과가 있다.According to the present invention as described above, when the combustion state of the hydrogen engine is unstable, misfire or leakage of the injector, it detects the abnormality of the output voltage value of the O 2 sensor installed in the exhaust pipe and turns on the alarm lamp. There is an effect that makes it easy to see the presence.

Claims (1)

수소를 연료로 사용하는 수소엔진에 있어서, 상기 수소엔진의 배기관에 설치되는 산소센서(O2센서)와; 상기 산소센서로부터의 출력 전압값이 기준치 이상일 때 신호를 출력하는 전자제어장치와; 상기 전자제어장치의 신호 출력이 있을때 점등되는 경고등과; 를 포함하여 구성되는 것을 특징으로 하는 수소엔진의 비정상 연소감지장치.A hydrogen engine using hydrogen as a fuel, comprising: an oxygen sensor (O 2 sensor) installed in an exhaust pipe of the hydrogen engine; An electronic controller for outputting a signal when an output voltage value from the oxygen sensor is equal to or greater than a reference value; A warning light that is turned on when there is a signal output of the electronic controller; Abnormal combustion detection device of a hydrogen engine, characterized in that comprises a.
KR2019960054026U 1996-12-23 1996-12-23 Apparatus for detecting abnormal combustion for hydrogen engines KR200173920Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019960054026U KR200173920Y1 (en) 1996-12-23 1996-12-23 Apparatus for detecting abnormal combustion for hydrogen engines

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KR200173920Y1 true KR200173920Y1 (en) 2000-04-01

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