KR0145681B1 - Cylinder discriminating control device of internal combustion engine - Google Patents

Cylinder discriminating control device of internal combustion engine

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Publication number
KR0145681B1
KR0145681B1 KR1019920016921A KR920016921A KR0145681B1 KR 0145681 B1 KR0145681 B1 KR 0145681B1 KR 1019920016921 A KR1019920016921 A KR 1019920016921A KR 920016921 A KR920016921 A KR 920016921A KR 0145681 B1 KR0145681 B1 KR 0145681B1
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KR
South Korea
Prior art keywords
engine
signal
reference signal
cylinder
control
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Application number
KR1019920016921A
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Korean (ko)
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KR940007356A (en
Inventor
윤형진
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전성원
현대자동차주식회사
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Priority to KR1019920016921A priority Critical patent/KR0145681B1/en
Publication of KR940007356A publication Critical patent/KR940007356A/en
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Publication of KR0145681B1 publication Critical patent/KR0145681B1/en

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Classifications

    • 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
    • F02D41/008—Controlling each cylinder individually
    • 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
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals

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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

본 발명은 자동차 엔진전자 제어용 기통식별 제어장치에 관한 것으로, 엔진의 캠샤프트에서 얻어지는 동기신호의 조합에 의하여 기통식별 및 제어기준각 정보를 제공하는 센서에 크랭크각 180°간격으로 반전되는 기준신호와 각 반전시점에서 기준신호의 레벨과의 조합으로 4개의 다른 상태를 표시하는 위치신호를 구성하여 기준신호 반전시 즉시 해당기통식별이 가능하게 한 방법을 제공하는 것이다.The present invention relates to a cylinder identification control device for vehicle engine electronic control, comprising a reference signal inverted at a crank angle of 180 ° to a sensor providing cylinder identification and control reference angle information by a combination of synchronization signals obtained from an engine camshaft. By providing a position signal indicating four different states in combination with the level of the reference signal at each inversion time, it is possible to provide a method for immediately identifying the corresponding cylinder when the reference signal is inverted.

Description

엔진전자 제어용 기통식별 제어장치Engine Identification Control Device for Engine Electronic Control

제1도는 엔진제어장치의 구성도,1 is a configuration diagram of an engine control apparatus;

제2도는 종래의 기통식별에 따른 동작파형도,2 is an operation waveform diagram according to a conventional cylinder identification,

제3도는 본 발명의 제1실시예에 따른 동작파형도,3 is an operation waveform diagram according to the first embodiment of the present invention;

제4도는 본 발명의 제1실시예에 따른 흐름도,4 is a flowchart according to a first embodiment of the present invention;

제5도는 본 발명의 제2실시예에 따른 동작파형도,5 is an operation waveform diagram according to a second embodiment of the present invention;

제6도는 본 발명의 제2실시예에 따른 흐름도,6 is a flowchart according to a second embodiment of the present invention;

제7도는 본 발명의 또다른 실시예를 나타낸 동작파형도이다.7 is an operational waveform diagram showing another embodiment of the present invention.

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

1:엔진 2:인젝터1: engine 2: injector

3:에어크리너 4:에어프로센서3: Air cleaner 4: Air Pro sensor

5:서지탱크 6:드로틀밸브5: Surge Tank 6: Throttle Valve

7:흡기관 8:배기관7: intake pipe 8: exhaust pipe

9:크랭크각센서 10:수온센서9: crank angle sensor 10: water temperature sensor

11:시동스위치 12:제어수단11: Start switch 12: Control means

본 발명은 엔진전자 제어용 기통식별 제어장치에 관한 것으로, 특히 엔진운전 개시후 엔진의 연료 및 점화제어를 위한 기통식별이 신속하고 간단하게 식별될 수 있게 한 엔진전자 제어용 기통식별 제어장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cylinder identification control device for engine electronic control, and more particularly, to a cylinder identification control device for engine electronic control, which enables a quick and simple identification of a cylinder identification for fuel and ignition control of an engine after starting engine operation.

엔진제어장치는 엔진의 1흡기관에 흡입되는 공기량을 검출하고, 이 검출된 공기량을 바탕으로 공급연료량을 연산하며, 이 연산결과에 의한 공급연료량을 엔진기통내에서 흡입하고 있는 기통에 인젝터를 통하여 분사공급하게 되어 있으며, 엔진의 소정 크랭크각위치에 있어서 발생하는 기통식별 신호등에서는 압축행정에 있는 기통을 식별하며 이 식별된 기통의 점화플러그에 고전압을 공급시켜 점화시키게 되어 있는바, 그 구조는 제1도와 같이 엔진(1)의 각기통마다 인젝터(2)가 설치되어 제어수단(20)에 연결되며, 에어크리너(3), 에어프로센서(4), 서지탱크(5), 드로틀밸브(6), 흡기관(7)과 배기관(8), 크랭크각센서(9)와 수온센서(10), 시동스위치(11) 등으로 구성되어 있다.The engine controller detects the amount of air sucked into the intake pipe of the engine, calculates the amount of fuel supplied based on the detected amount of air, and injects the amount of fuel supplied in the engine cylinder through the injector into the cylinder. The cylinder identification signals generated at the predetermined crank angle positions of the engine identify the cylinders in the compression stroke and ignite them by supplying a high voltage to the spark plugs of the identified cylinders. As shown in FIG. 1, an injector 2 is installed in each cylinder of the engine 1 and connected to the control means 20. The air cleaner 3, the air prosensor 4, the surge tank 5, and the throttle valve 6 ), An intake pipe 7, an exhaust pipe 8, a crank angle sensor 9, a water temperature sensor 10, a start switch 11, and the like.

여기서, 에어프로센서(4)는 엔진(1)의 흡입되는 공기량에 따라 펄스 또는 전압을 출력하고, 크랭크각센서(9)는 엔진(1)의 회전에 따라 제2도에 도시된 바와 같이 크랭크각펄스 및 기통식별신호를 출력시키게 되는데, 이때 기통식별방법은 제2도에서와 같이 크랭크각신호(CAS)의 상승에지마다 기통식별신호(CYL)의 레벨(LEVEL)을 검출하여 H레벨(HIGH LEVEL)이 입력되면 특정기통을 식별하게 된다.Here, the air pro sensor 4 outputs a pulse or voltage according to the amount of air sucked into the engine 1, and the crank angle sensor 9 cranks as shown in FIG. 2 according to the rotation of the engine 1. Each pulse and a cylinder identification signal are output. In this case, the cylinder identification method detects the level LEVEL of the cylinder identification signal CYL for each rising edge of the crank angle signal CAS, as shown in FIG. LEVEL) is input to identify a specific cylinder.

이와같은 종래의 식별방법은 크랭크각신호(CAS)의 상승에지에서 기통식별신호(CYL)의 레벨만을 확인하게 되므로 특정기통을 판정하기 위해서는 4행정(크랭크각 720°)에 단한번밖에는 식별이 불가능하게 된다. 따라서, 엔진운전 개시후 기통을 식별할 때까지는 몇행정은 전기통에 동시분사를 행하거나 점화를 금지하는 등의 제어를 하여야 되므로 정확한 기통당 제어가 어려운 결점이 있었다.In the conventional identification method, only the level of the cylinder identification signal (CYL) is checked at the rising edge of the crank angle signal (CAS). Therefore, it is impossible to identify only once in four strokes (720 degrees of the crank angle) to determine a specific cylinder. Done. Therefore, until the engine is identified after the start of engine operation, some strokes must be controlled such as simultaneous injection into the electric cylinder or prohibiting ignition.

본 발명은 상기와 같은 점을 해소하기 위하여 발명된 것으로 엔진운전 개시후 기통식별을 신속하고 간단한 방법으로 식별할 수 있고 기준 각도를 제공할 수 있는 기통식별방법을 제공하는데 그 목적이 있는 것이다.The present invention has been invented to solve the above-described problems, and the object of the present invention is to provide a cylinder identification method capable of identifying a cylinder identification in a quick and simple manner after the start of engine operation and providing a reference angle.

본 발명에 관한 엔진제어장치의 기통식별방법은 크랭크각 180° 간격으로 레벨이 반전되는 기준신호(REF 신호)를 발생시키는 수단과, 각 반전시점에서 기준신호(REF 신호)의 레벨과의 조합으로 4개의 다른 상태를 표시할 수 있는 위치신호(POS 신호) 발생 수단을 마련하여서 기준신호(REF 신호)의 반전시 즉시 해당기통식별이 가능한 방법이다.The cylinder identification method of the engine control apparatus according to the present invention is a combination of means for generating a reference signal (REF signal) whose level is inverted at a crank angle of 180 °, and a combination of the level of the reference signal (REF signal) at each inversion time point. The position signal (POS signal) generating means capable of displaying four different states is provided so that the corresponding cylinder can be immediately identified when the reference signal (REF signal) is inverted.

이하, 본 발명의 실시예를 도면에 의하여 설명한다.Best Mode for Carrying Out the Invention Embodiments of the present invention will now be described with reference to the drawings.

제3도는 본 발명의 1실시예를 나타낸 동작파형도로서 크랭크각 180°간격으로 제어기준각(제어에 필요한 특정기준각도) A에서 레벨이 반전되는 기준신호(REF 신호)와, 화살표로 표시된 부분에서 제어기준각 B를 발생하도록 만든 위치신호(POS 신호)로 구성되어 기준신호 (REF 신호)의 반전시 위치신호(POS신호)의 레벨에 따라 기통식별을 하게 되는 것이며 제4도와 같이 기통식별절차가 행해지게 된다.3 is an operation waveform diagram showing an embodiment of the present invention, a reference signal (REF signal) in which the level is inverted at a control reference angle (specific reference angle required for control) A at a crank angle of 180 °, and a portion indicated by an arrow. It consists of position signal (POS signal) which is made to generate control reference angle B in the figure, and it identifies cylinder according to the level of position signal (POS signal) when the reference signal (REF signal) is inverted. Will be done.

제5도는 본 발명의 제2실시예를 나타낸 동작파형도로서 크랭크각 180°간격으로 레벨이 반전되는 기준신호(REF 신호)와 상기 방법에 따라 제어에 필요한 특정기준 각도를 복수개 제공하는 위치신호(POS 신호)로 구성되어 기준신호(REF 신호)의 반전시 위치신호(POS 신호)의 레벨에 따라 기통식별을 하게 되는 방법이며 제6도와 같이 상기 신호에 의한 제어처리 절차가 행해진다.5 is an operation waveform diagram showing a second embodiment of the present invention, and a reference signal (REF signal) whose level is inverted at intervals of 180 degrees of crank angle, and a position signal for providing a plurality of specific reference angles required for control according to the method ( POS signal) and a cylinder identification method according to the level of the position signal (POS signal) when the reference signal (REF signal) is inverted. A control processing procedure based on the signal is performed as shown in FIG.

본 발명의 또다른 실시예로서 상기 제1실시예와 제2실시예의 위치신호(POS 신호)는 제7도와 같이 하강에제 대신 상승에지를 사용하도록 동기시켜 발생시킬 수 있는 방법이다.As another embodiment of the present invention, the position signals (POS signals) of the first and second embodiments can be generated in synchronization with the rising edge instead of the falling edge as shown in FIG.

이와같이 본 발명은 종래의 기통식별이 캠샤프트 1회전(엔진 2회전) 이상이 되어야 가능했던 것을 엔진의 각 행정(엔진의 1/2회전) 마다의 신호레벨 입력에 따라 기통식별이 가능할 수 있는 동시에 제어상 필요에 따라 복수개의 기준각을 제공할 수 있게 하며 따라서 엔진시동시 첫행정부터 정확한 기통별제어가 가능하게 되며, 이와 더불어 제2의 기준각신호의 필요에 따라 복수개의 기준각을 제공할 수 있어 시간적 분할처리를 용이하게 할 수 있는 효과가 있다.As described above, the present invention may enable the cylinder identification according to the signal level input for each stroke of the engine (half rotation of the engine). It is possible to provide a plurality of reference angles according to the control needs. Therefore, accurate cylinder-specific control is possible from the first stroke when the engine is started. In addition, a plurality of reference angles can be provided according to the needs of the second reference angle signal. There is an effect that can facilitate the temporal division processing.

Claims (3)

자동차 엔진의 캠샤프트 또는 크랭크샤프트의 회전에 동기하여 얻어지는 신호의 조합에 의하여 기통식별 및 제어기준각 정보를 제공하는 장치에 있어서, 크랭크각 180°간격으로 레벨이 반전되는 기준신호 발생수단과, 각 반전시점에서 기준신호의 레벨과의 조합으로 4개의 다른 상태를 나타내는 위치신호 발생수단으로 이루어 기준신호 반전시 해당기통을 식별하게 되는 것을 특징으로 하는 엔진전자 제어용 기통식별 제어장치.An apparatus for providing cylinder identification and control reference angle information by a combination of signals obtained in synchronization with the rotation of a cam shaft or a crank shaft of an automobile engine, the apparatus comprising: reference signal generating means for inverting a level at a crank angle of 180 degrees; An engine electronic control cylinder identification control device, comprising: a position signal generating means representing four different states in combination with a level of a reference signal at an inversion time to identify a corresponding cylinder when the reference signal is inverted. 제1항에 있어서, 크랭크각 180°간격으로 반전되는 기준신호의 반전시점과, 상기 위치신호의 상승 또는 하강이 특정반전시점이 각각 분사, 통전, 점화 및 기타 크랭크각의 회전에 동기한 계측 및 제어에 대한 기준위치를 제공하도록 하는 것을 특징으로 하는 엔진전자 제어용 기통식별 제어장치.2. The measurement method according to claim 1, wherein the inversion time of the reference signal inverted at intervals of 180 degrees of crank angle and the rise or fall of the position signal are specified in synchronization with the rotation of the injection, energization, ignition, and other crank angles, respectively; An engine electronic control cylinder identification control device, characterized in that to provide a reference position for the control. 제2항에 있어서, 위치신호의 상승 또는 하강의 특정반전시점이 크랭크각 180°당 하나 또는 2이상의 기준각으로 제공하도록 하는 것을 특징으로 하는 엔진전자 제어용 기통식별 제어장치.The engine identification control apparatus for engine electronic control according to claim 2, wherein the specific inversion time point of rising or falling of the position signal is provided at one or two reference angles per 180 degrees of the crank angle.
KR1019920016921A 1992-09-17 1992-09-17 Cylinder discriminating control device of internal combustion engine KR0145681B1 (en)

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