KR100835696B1 - Cycle displaying method of automobile engine and apparatus thereof - Google Patents

Cycle displaying method of automobile engine and apparatus thereof Download PDF

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KR100835696B1
KR100835696B1 KR1020070048324A KR20070048324A KR100835696B1 KR 100835696 B1 KR100835696 B1 KR 100835696B1 KR 1020070048324 A KR1020070048324 A KR 1020070048324A KR 20070048324 A KR20070048324 A KR 20070048324A KR 100835696 B1 KR100835696 B1 KR 100835696B1
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South Korea
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engine
stroke
sensor
cylinder
controller
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KR1020070048324A
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Korean (ko)
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최재관
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주식회사 대성지이-쓰리
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/228—Warning displays
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

A method and an apparatus for displaying a stroke of a vehicle engine are provided to easily display four strokes of the engine by detecting operational state of parts related to the strokes using a sensor, and analyzing the operation state in a controller. A method for displaying a stroke of a vehicle engine comprises the step of measuring an operation state of the engine in a sensor unit(1). A sensor signal measured in the sensor unit is transmitted into a controller(3). The sensor signal and data values stored in the controller are compared and analyzed to determine a stroke condition of the engine. An output signal is transferred based on the data determined in the controller. The output signal is displayed through a display unit(4) according to stroke conditions.

Description

자동차 기관의 행정 표시 방법 및 그 장치{CYCLE DISPLAYING METHOD OF AUTOMOBILE ENGINE AND APPARATUS THEREOF}Administrative display method and apparatus thereof of automobile organization {CYCLE DISPLAYING METHOD OF AUTOMOBILE ENGINE AND APPARATUS THEREOF}

도 1은 본 발명의 주요 구성을 나타낸 블럭도1 is a block diagram showing the main configuration of the present invention

도 2는 본 발명의 표시 장치의 주요 구성을 나타낸 평면 예시도2 is an exemplary plan view showing a main configuration of a display device of the present invention.

도 3은 본 발명의 작동 과정을 나타낸 흐름도3 is a flowchart illustrating the operation of the present invention.

도 4는 본 발명의 4기통 엔진용 행정 표시 장치 회로도4 is a circuit diagram of a four-cylinder engine of the present invention.

도 5는 본 발명의 4기통 엔진용 표시부의 점등 순서표5 is a sequence diagram of lighting of the display unit for a four-cylinder engine of the present invention;

도 6은 본 발명의 6기통 엔진용 표시부의 점등 순서표이다.6 is a lighting sequence table of the display portion for the six-cylinder engine of the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

1: 센서부 1a: TDC센서1: sensor part 1a: TDC sensor

1b: CPS 2: 신호입력부1b: CPS 2: Signal input section

3: 제어부 4: 표시부3: control unit 4: display unit

4a : LED 4a: LED

본 발명은 자동차 기관의 행정 표시 방법 및 그 장치에 관한 것으로 더욱 구체적으로는, 자동차의 기관으로 사용되는 엔진의 작동에 따른 실린더 내부의 행정 진행 상황을 LED 점멸로 표시할 수 있도록 하여 교육 및 연구 목적으로 활용할 수 있도록 한 자동차 기관의 행정 표시 방법 및 그 장치에 관한 것이다.The present invention relates to a method and apparatus for displaying a stroke of an automobile engine, and more specifically, to indicate the progress of the stroke inside a cylinder according to the operation of an engine used as an engine of a vehicle by displaying LED blinks for educational and research purposes. The present invention relates to a method and apparatus for administrative display of a motor vehicle.

주지된 바와 같이 자동차용 기관으로 사용되는 통상의 엔진은 공기를 흡입하거나 공기와 연료를 혼합하여 흡입하는 흡입행정과, 피스톤으로 흡입된 공기 또는 혼합기를 실린더 내부에서 압축하는 압축행정과, 압축된 공기에 연료를 분사하거나 점화플러그를 이용해 혼합기를 점화시켜 연료를 폭발시키며 동력을 생산해내는 폭발행정과, 폭발 후 발생한 실린더 내부의 가스를 배출하는 배기행정을 연속적으로 수행하면서 동력을 생산하게 된다.As is well known, conventional engines used as engines for automobiles include suction strokes that suck air or mix air and fuel, a compression stroke that compresses air or a mixer sucked by a piston inside a cylinder, and fuel to compressed air. To produce power by continuously performing an explosion stroke that explodes fuel and generates power by injecting or igniting a mixer using an ignition plug, and an exhaust stroke that discharges gas inside the cylinder generated after the explosion.

따라서 상기 4행정 중 하나의 행정에 문제가 발생하더라도 엔진은 동력을 제대로 생산해낼 수 없기 때문에 엔진 작동에 있어서 행정의 원리를 이해하고, 각 행정의 이상 유무 판별과, 특정 행정에서의 이상 발생시에 그에 대한 적절한 대처가 바로 엔진 성능을 제대로 발휘하기 위해 꼭 필요하게 되는 것이다.Therefore, even if a problem occurs in one of the four strokes, the engine cannot produce power properly. Therefore, it is necessary to understand the principle of stroke in the operation of the engine, and to determine whether there is an abnormality in each stroke and when an abnormality occurs in a specific stroke. Proper action is essential to getting the engine right.

따라서, 자동차 관련 기술을 가르치는 교육기관에서는 엔진의 기본 원리가 되는 4행정의 원리를 학생들에게 교육하기 위하여 여러 가지 수단과 방법을 사용하 고 있으나, 단순한 설명식 교육만으로는 기술적 이해도를 높이는데 한계가 있었다.Therefore, educational institutions that teach automobile-related technologies use various means and methods to educate students on the principle of four-stroke, which is the basic principle of the engine. However, simple explanatory education has limited the technical understanding. .

그리하여 최근에는 엔진의 4행정을 그래프 등으로 표시하여 교육적 효과를 높이기 위한 장치들도 개발된 바 있으나, 이러한 종래의 장치들은 그래프를 일일이 분석해봐야 행정 상태를 알 수 있기 때문에 그래프만으로 즉각적인 행정 상태를 파악하기 곤란한 문제점이 있었다.In recent years, devices have been developed to enhance the educational effect by displaying four strokes of the engine in graphs, etc. However, these conventional devices identify the immediate administrative state only by using the graph because the administrative state can be known only by analyzing the graph one by one. There was a problem that was difficult to do.

또한, 그래프를 표시하는 표시장치의 사용법도 번거롭고, 불편한 문제점이 있었다.In addition, the use of a display device for displaying a graph is also cumbersome and inconvenient.

본 발명은 위와 같은 종래의 문제점을 해소하기 위하여 개발한 것으로서, 자동차용 기관인 엔진에서 4행정의 수행과 관련된 부속품의 작동 상태를 센서로 측정하여 이를 수집한 후, 사전에 4행정의 수행 관련 데이터가 저장되어 있는 제어부에서 분석하여 4행정의 진행 과정을 판별하고 이를 표시부에서 표시함으로써 엔진의 4행정 수행 상태를 더욱 쉽고 간편하게 인지할 수 있도록 한 것으로 이를 첨부된 도면에 의하여 더욱 상세히 설명하면 다음과 같다.The present invention has been developed in order to solve the above-mentioned conventional problems, after measuring the operating state of the accessories related to the performance of the four strokes in the engine of the automobile engine with a sensor to collect them, the data related to the performance of the four strokes in advance By analyzing in the stored control to determine the progress of the four-stroke and display it on the display to make it easier and easier to recognize the four-stroke performance of the engine as described in more detail by the accompanying drawings as follows.

본 발명은 자동차의 기관으로 사용하는 엔진의 동작 상태를 센서부(1)에서 측정하는 단계와,The present invention comprises the steps of measuring the operating state of the engine used as the engine of the vehicle in the sensor unit 1,

센서 측정된 센서신호를 제어부(3)로 전송하는 단계와,Transmitting the measured sensor signal to the controller 3;

제어부(3)로 전송되는 센서신호와, 제어부(3)에 저장된 데이터 값을 비교, 분석하여 엔진의 행정 상황을 판별하는 단계와,Comparing and analyzing the sensor signal transmitted to the control unit 3 and the data values stored in the control unit 3 to determine the stroke state of the engine;

제어부(3)에서 판별된 데이터를 바탕으로 출력신호를 전송하는 단계와,Transmitting an output signal based on the data determined by the controller 3;

제어부(3)에서 전송된 출력신호에 의해 표시부(4)에서 행정별로 표시하는 단계를 순차적으로 수행하는 구성이다.The display unit 4 sequentially displays the steps of the display unit 4 by the output signal transmitted from the control unit 3.

한편, 상기와 같은 구성 단계의 수행을 위하여 본 발명은 자동차의 기관으로 사용되는 엔진에 설치되어 기계적 동작을 반복 수행하는 엔진 부품의 동작 상태를 측정하는 센서부(1)와,On the other hand, the present invention for performing the configuration step as described above is installed in the engine used as the engine of the vehicle sensor unit (1) for measuring the operating state of the engine component to perform a mechanical operation repeatedly,

상기 센서부(1)에서 측정된 센서신호를 제어부(3)에 전달하는 신호입력부(2)와,A signal input unit 2 for transmitting the sensor signal measured by the sensor unit 1 to the control unit 3,

센서신호에 관한 처리데이터를 사전에 내부 저장하며, 신호입력부(2)를 통해 입력된 센서신호를 저장된 처리데이터와 비교, 분석한 후 제어신호를 발생하는 제어부(3)와,A control unit 3 which internally stores processing data related to the sensor signal in advance and compares and analyzes the sensor signal input through the signal input unit 2 with the stored processing data and generates a control signal;

상기 제어부(3)에서 발생된 제어신호에 의해 LED(4a)가 점등 또는 소등하는 표시부(4)로 구성된다.The display unit 4 is configured to turn on or off the LED 4a by the control signal generated by the control unit 3.

또한, 상기 센서부(1)는 엔진의 캠축(Cam Shaft)의 1번 실린더 상사점 위치를 감지하여 측정된 위치를 전기적 신호로 변환하여 제어부(3)에 전송하는 TDC(Top Dead Center) 센서를 사용하거나, 회전하는 프라이휠의 이빨의 움직임을 감지하고 이를 전기적 신호로 변환하여 제어부(3)에 전송하는 CPS(Crank Position Sensor) 등을 사용할 수 있다.In addition, the sensor unit 1 detects the position of the cylinder top dead center of the cam shaft of the engine, converts the measured position into an electrical signal, and transmits a TDC (Top Dead Center) sensor to the control unit 3. Alternatively, a CPS (Crank Position Sensor) or the like may be used to detect the movement of the teeth of the rotating flywheel, convert it into an electrical signal, and transmit the same to the control unit 3.

아울러, 상기 표시부(4)는 각 행정별 표시를 위하여 엔진의 실린더별로 각 4개씩의 LED(4a)를 가지며, 각 LED는 서로 다른 표시 색상을 가지는 것을 포함한다.In addition, the display unit 4 includes four LEDs 4a for each cylinder of the engine for displaying the respective strokes, and each LED includes a different display color.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 1은 본 발명의 주요 구성을 나타낸 블럭도로서 도면과 같이 본 발명은 크게 센서부(1)와 제어부(3)와 표시부(4)로 구성된다.1 is a block diagram showing the main configuration of the present invention. As shown in the drawing, the present invention is largely composed of a sensor unit 1, a control unit 3, and a display unit 4. As shown in FIG.

엔진의 주요 부품 주변에 설치되어 주요 부품의 작동 상태를 측정하는 센서부(1)는 엔진의 캠축(Cam Shaft)의 1번 실린더 상사점 위치를 감지하여 측정된 위치를 전기적 신호로 변환하여 제어부(3)에 전송하는 TDC(Top Dead Center) 센서를 사용하거나, 회전하는 프라이휠의 이빨의 움직임을 감지하고 이를 전기적 신호로 변환하여 제어부(3)에 전송하는 CPS(Crank Position Sensor) 등을 사용할 수 있다.The sensor unit 1 installed around the main parts of the engine and measuring the operating state of the main parts detects the position of the top dead center of cylinder 1 of the cam shaft of the engine, converts the measured position into an electrical signal, and converts the control unit ( 3) use a TDC (Top Dead Center) sensor to transmit, or use a CPS (Crank Position Sensor) to detect the movement of teeth of a rotating flywheel, convert it into an electrical signal, and transmit it to the control unit (3). have.

그 중 TDC센서(1a)는 캠축캡(CAM SHAFT CAP)상면에 장착되어 실린더가 압축상태에 있다는 것을 측정하게 된다.The TDC sensor 1a is mounted on the camshaft cap and measures that the cylinder is in a compressed state.

즉, TDC센서(1a)는 홀소자를 사용하고 마그네틱 탭을 갖는 스틸 디스크, 홀소자로 구성되어 캠축(CAM SHAFT)의 위치를 감지하게 되는데, 캠축 1회전(크랭크축 2회전)에 대하여 1개의 돌기가 축과 같이 회전하면 돌기와 감응부의 간격이 변화하기 때문에 기전력이 발생하게 된다.That is, the TDC sensor 1a is composed of a steel disk and a Hall element using a Hall element and a magnetic tab to sense the position of the CAM shaft. One projection for one cam shaft rotation (two crank shaft rotations) When rotated along the shaft, the electromotive force is generated because the distance between the projection and the sensitive portion changes.

따라서 돌기부를 1번 실린더와 동기하도록 설치함으로써 1번 실린더의 압축 상사점 위치를 알 수 있기 때문에 제어부(3)에 의해 압축 상사점 위치 판별을 통해서 실린더 내부의 행정 상태를 정확하게 파악할 수 있게 되는 것이다. Therefore, since the projection top dead center position of the cylinder 1 can be known by installing the projection in synchronization with the cylinder 1, the controller 3 can accurately determine the stroke state inside the cylinder through the compression top dead center position determination.

또한, CPS(1b)는 영구자석, 센서코일 등으로 구성되는데, 코일이 감긴 영구자석의 양극 사이로 크랭크 샤프트와 연결된 스틸 디스크의 탭이 통과할 때 철심의 자속량은 공기의 그것보다 수천 배나 크기 때문에 자기회로의 자속이 증가된다.In addition, the CPS 1b is composed of a permanent magnet, a sensor coil, and the like, since the magnetic flux of the iron core is thousands of times larger than that of air when the tap of the steel disc connected to the crankshaft passes between the anodes of the coil wound permanent magnet. The magnetic flux of the magnetic circuit is increased.

이때 변하는 자속은 센싱 코일 양단의 전위차를 형성하고 코일 양단에 걸리는 전위차는 자속의 변화량에 비례하며, 자기 형식으로 센서 휠이 회전할 때 CPS의 자속 변화량이 출력전압으로 전환된다.At this time, the changing magnetic flux forms a potential difference across the sensing coil, and the potential difference across the coil is proportional to the variation of the magnetic flux. When the sensor wheel rotates in a magnetic form, the magnetic flux variation of the CPS is converted into an output voltage.

그리하여 그 출력전압을 제어부(3)에서 A/D변화시켜 이를 제어부(3)에 사전 저장된 처리데이터와 비교, 분석하여 각 실린더 내부의 행정 상황을 파악할 수 있게 되는 것이다.Thus, the output voltage is changed by A / D in the control unit 3 and compared with the processing data pre-stored in the control unit 3 to analyze the stroke state inside each cylinder.

위와 같은 과정을 통해서 제어부(3)가 각 실린더별 행정 상황을 판별한 후, 그에 따른 제어신호를 표시부(4)로 전송하면, 표시부(4)에 형성된 엔진의 실린더별 각 4개씩의 LED(4a)가 점등 또는 소등하면서 실린더 내부의 행정 상태를 표시하기 때문에 엔진의 4행정에 대한 작동과 그에 대한 이해를 높일 수 있게 된다.After the control unit 3 determines the stroke situation for each cylinder through the above process, and transmits the control signal according to the display unit 4, four LEDs 4a for each cylinder of the engine formed on the display unit 4 are provided. ) Lights up or goes out to indicate the stroke inside the cylinder, which improves the operation and understanding of the four strokes of the engine.

한편, 상기 표시부(4)의 경우 각 행정별 표시를 위하여 엔진의 실린더별로 각 4개씩의 LED(4a)를 설치할 때, 각 LED(4a)를 서로 다른 색상을 가진 것으로 하면 실린더의 행정 상태를 더욱 쉽게 판별할 수 있게 된다.On the other hand, in the case of the display unit 4, when installing the four LEDs (4a) for each cylinder of the engine for display by each stroke, if each LED (4a) has a different color, the stroke state of the cylinder further It can be easily determined.

즉, 본 발명의 장치를 PCB상에 구성한 상태를 나타낸 평면 예시도인 도 2에서와 같이 본 발명은 자동차의 기관으로 사용되는 엔진의 주요 부품 주변에 설치되어 주요 부품의 작동 상태를 측정하는 센서부(1)에서 전달되는 신호를 신호입력부(2)를 통해 입력받은 후, 제어부(3)에서 이를 사전 저장된 처리데이터와 비교, 분석한 후 표시부(4)에 제어신호를 전달하게 된다.That is, as shown in FIG. 2, which is a plan view showing a state in which a device of the present invention is configured on a PCB, the present invention is installed around a main part of an engine used as an engine of an automobile, and a sensor unit for measuring the operating state of the main part. After receiving the signal transmitted from (1) through the signal input unit 2, the control unit 3 compares and analyzes it with pre-stored processing data, and then transmits a control signal to the display unit 4.

그리하여 전달된 신호를 효과적으로 표시하기 위하여 PCB상에는 도면과 같이 엔진의 실린더별로 각 4개씩의 LED(4a)가 서로 행정별로 구분된 4가지 색상의 것들로 설치하게 되는데, 흡입행정은 녹색LED, 압축행정은 황색LED, 폭발행정은 적색LED, 배기행정은 백색LED로 설치하게 된다.Thus, in order to effectively display the transmitted signal, four LEDs (4a) for each cylinder of the engine are installed in four colors, separated by strokes, as shown on the PCB, and the suction stroke is a green LED and a compression stroke. Silver yellow LED, explosion stroke red LED, exhaust stroke white LED.

따라서, 제어부(3)에 의해 신호를 전달받은 표시부(4)의 LED가 점등되면 첨부도면 도 5와 같이 실린더1에서 폭발행정을 표시하는 적색LED가 점등될 때, 실린더2에서는 흡입행정을 표시하는 녹색LED가 점등되고, 실린더3에서는 배기행정을 표시하는 백색LED가 점등되며, 실린더4에서는 압축행정을 표시하는 황색LED가 점등됨으로써, 특정 실린더의 폭발행정시 다른 실린더의 행정 진행 상황을 쉽고 간편하게 파악할 수 있게 되는 것이다.Accordingly, when the LED of the display unit 4 received the signal by the controller 3 is turned on, when the red LED indicating the explosion stroke is lit in the cylinder 1 as shown in FIG. 5, the cylinder 2 displays the suction stroke. The green LED turns on, the white LED indicating the exhaust stroke turns on in cylinder 3, and the yellow LED indicating the compression stroke turns on in cylinder 4, so you can easily and easily check the stroke progress of another cylinder during the explosion of a specific cylinder. It will be possible.

한편, 첨부도면 도 6과 같이 6기통 엔진용의 경우에는 표시부(4)의 LED 설치 숫자가 실린더의 숫자만큼 증설되는 것은 당연할 것이며, 통상의 6기통 엔진 폭발 순서인 1-5-3-6-2-4 순에 맞게 LED를 색상별로 설치하는 것이 바람직할 것임을 미리 밝혀두는 바이다.On the other hand, in the case of a six-cylinder engine as shown in FIG. 6, it is natural that the number of LED installations of the display unit 4 is increased by the number of cylinders, and a typical six-cylinder engine explosion sequence is 1-5-3-6. Please note that it would be desirable to install LEDs by color in the order of -2-4.

이상에서 설명한 바와 같이 본 발명은 자동차용 기관인 엔진의 행정을 LED로 표시하여 보는 이로 하여금 엔진의 행정 상황을 쉽게 판별하고 이해할 수 있도록 함으로써 교육용으로서 교육 효과를 크게 향상시킬 수 있는 이점이 있다.As described above, the present invention has an advantage of greatly improving the educational effect for education by allowing the viewer to easily display and understand the administration status of the engine by displaying the administration of the engine which is an automobile engine with LEDs.

Claims (6)

자동차의 기관으로 사용하는 엔진의 동작 상태를 센서부(1)에서 측정하는 단계와,Measuring the operation state of the engine used as the engine of the vehicle in the sensor unit 1, 센서 측정된 센서신호를 제어부(3)로 전송하는 단계와,Transmitting the measured sensor signal to the controller 3; 제어부(3)로 전송되는 센서신호와, 제어부(3)에 저장된 데이터 값을 비교, 분석하여 엔진의 행정 상황을 판별하는 단계와,Comparing and analyzing the sensor signal transmitted to the control unit 3 and the data values stored in the control unit 3 to determine the stroke state of the engine; 제어부(3)에서 판별된 데이터를 바탕으로 출력신호를 전송하는 단계와,Transmitting an output signal based on the data determined by the controller 3; 제어부(3)에서 전송된 출력신호에 의해 표시부(4)에서 행정별로 표시하는 단계를 순차적으로 수행하는 구성으로 된 자동차 기관의 행정 표시 방법 Stroke display method of a motor vehicle which is comprised by the output signal transmitted from the control part 3, and displaying step by step in the display part 4 sequentially. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
KR1020070048324A 2007-05-17 2007-05-17 Cycle displaying method of automobile engine and apparatus thereof KR100835696B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0173780B1 (en) * 1989-08-25 1999-05-15 가나이 쯔도무 Method and apparatus for detecting and controlling combustion condition in an internal combustion engine
US6055468A (en) * 1995-08-07 2000-04-25 Products Research, Inc. Vehicle system analyzer and tutorial unit
US6564623B2 (en) * 1999-12-15 2003-05-20 K.K. Holding Ag Method for determining the top dead center of an internal combustion engine
JP2004019482A (en) * 2002-06-13 2004-01-22 Aisan Ind Co Ltd Stroke distinguishing method of internal combustion engine and stroke distinguishing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0173780B1 (en) * 1989-08-25 1999-05-15 가나이 쯔도무 Method and apparatus for detecting and controlling combustion condition in an internal combustion engine
US6055468A (en) * 1995-08-07 2000-04-25 Products Research, Inc. Vehicle system analyzer and tutorial unit
US6564623B2 (en) * 1999-12-15 2003-05-20 K.K. Holding Ag Method for determining the top dead center of an internal combustion engine
JP2004019482A (en) * 2002-06-13 2004-01-22 Aisan Ind Co Ltd Stroke distinguishing method of internal combustion engine and stroke distinguishing device

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