KR970045392A - Control method of ignition timing of car using cylinder pressure - Google Patents

Control method of ignition timing of car using cylinder pressure Download PDF

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Publication number
KR970045392A
KR970045392A KR1019950058526A KR19950058526A KR970045392A KR 970045392 A KR970045392 A KR 970045392A KR 1019950058526 A KR1019950058526 A KR 1019950058526A KR 19950058526 A KR19950058526 A KR 19950058526A KR 970045392 A KR970045392 A KR 970045392A
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South Korea
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value
ignition timing
ignition
optimum
arithmetic mean
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KR1019950058526A
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Korean (ko)
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KR100226232B1 (en
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조한승
이종화
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이우복
사단법인고등기술연구원 연구조합
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Publication of KR100226232B1 publication Critical patent/KR100226232B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • 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)
  • Signal Processing (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

본 발명은 실린더 압력을 이용한 자동차의 점화시기 제어방법에 관한 것으로, 이를 해결하기 위하여 연료펌프와, 점화코일, 배기가스 중에 포함된 산소량을 감지하는 공연비센서, 트로틀밸브 개도 정도를 감지하는 트로틀밸브 스위치, 상사점을 기준으로 피스톤 위치를 파악하는 크랭크 각 센서, 실린더 내의 압력을 감지하는 압력센서 및 상기 센서들 및 트로틀밸브 스위치로부터의 제공되는 각각의 정보를 근거로 하여 자동차의 점화시기를 제어하는 방법에 있어서, 상기 센싱된 N개의 최고압력위치(크랭크각)를 산술평균한 수치와 기 설정된 크랭크각에 대한 최적최고압력위치 값을 구하는 제 1단계와 상기 제 1 단계에 의해 구해진 산술 평균수치와 최적최고압력위치 값을 비교판정하는 제 2 단계와 상기 제 2단계에서 산술평균 수치가 최적최고압력위치 값보다 크면 기 설정된 점화시기 값에 보정점화시기 값을 더한 값을 최적의 점화시기를 검출하여 이에 따른 점화 신호를 출력하며, 이와 반대로 상기 제 2 단계에서 산술평균 수치가 최적최고압력위치 값보다 작으면 기 설정된 점화시기 값에 보정점화시기 값을 뺀 값을 최적의 점화시기로 되는 새로운 점화시기를 검출하고 이에 따른 점화신호를 출력하는 제 3 단계를 구비함으로써 최적의 점화시기를 선택할 수 있는 효과가 있다.The present invention relates to a ignition timing control method of a vehicle using a cylinder pressure, in order to solve the fuel pump, ignition coil, air-fuel ratio sensor for detecting the amount of oxygen contained in the exhaust gas, throttle valve switch for detecting the degree of opening the throttle valve And a method of controlling the ignition timing of the vehicle based on the crank angle sensor for detecting the piston position based on the top dead center, the pressure sensor for detecting the pressure in the cylinder, and the respective information provided from the sensors and the throttle valve switch. The arithmetic mean value of the sensed N highest pressure positions (crank angle) and the first arithmetic average value and the optimum arithmetic mean value obtained by the first step are obtained. In the second step of comparing and determining the maximum pressure position value, the arithmetic mean value is optimal in the second step. If the value is greater than the value, the optimum ignition timing is detected by adding the corrected ignition timing value to the preset ignition timing value, and the ignition signal is output accordingly. In contrast, the arithmetic mean value is greater than the optimum maximum pressure position value in the second step. If it is small, it is possible to select the optimum ignition timing by including a third step of detecting a new ignition timing that is the optimum ignition timing by subtracting the compensation ignition timing value from the preset ignition timing value and outputting the ignition signal accordingly. There is.

Description

실린더 압력을 이용한 자동차의 점화시기 제어방법Control method of ignition timing of car using cylinder pressure

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 자동차의 점화시기 제어방법을 적용한 장치도.1 is a device diagram applying the ignition timing control method of a vehicle according to the present invention.

제2도는 산술평균할 사이클수(A.N.)가 5일 때 가중지수(α)의 영향을 나타내는 그래프.2 is a graph showing the influence of the weighting index α when the number of cycles to be arithmetic averaged (A.N.) is 5. FIG.

제3도는 가중지수(α)가 2일때 산술평균할 사이클 수의 영향을 나타내는 그래프.3 is a graph showing the effect of the number of cycles to be arithmetically averaged when the weighting index α is 2. FIG.

제4도는 산술평균할 사이클 수(A.N.)가 5, 가중치(n)가 0.2일때 최고압력 위치와 점화시기를 나타내는 그래프.4 is a graph showing the maximum pressure position and the ignition timing when the number of cycles to be arithmetic average (A.N.) is 5 and the weight (n) is 0.2.

제5도는 산술평균할 사이클 수(A.N.)가 5, 가중치(n)가 0.2일때 점화시기 조건에 따라 지시평균 유효압력을 비교한 그래프.5 is a graph comparing the indicated average effective pressure according to the ignition timing conditions when the number of cycles to be arithmetic average (A.N.) is 5 and the weight (n) is 0.2.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

110 : 공연비센서 102 : 트로틀 밸브 스위치110: air-fuel ratio sensor 102: throttle valve switch

130 : 크랭크각 센서 140 : 압력센서130: crank angle sensor 140: pressure sensor

150 : 엔진제어부 160 : 연료펌프150: engine control unit 160: fuel pump

170 : 점화코일170: ignition coil

Claims (3)

연료펌프와, 점화코일, 배기가스 중에 포함된 산소량을 감지하는 공연비센서, 트로틀밸브 개도 정도를 감지하는 트로틀밸브 스위치, 상사점을 기준으로 피스톤 위치를 파악하는 크랭크 각 센서, 실린더 내의 압력을 감지하는 압력센서 및 상기 센서들 및 트로틀 밸브 스위치로부터의 제공되는 각각의 정보를 근거로 하여 자동차의 점화시기를 제어하는 방법에 있어서, 상기 센싱된 N개의 최고압력위치 (크랭크각)를 산술평균한 수치와 기설정된 크랭크각에 대한 최적 최고압력위치 값을 구하는 제 1 단계와 ; 상기 제 1 단계에 의해 구해진 산술 평균수치와 최적 최고압력 위치 값을 비교판정하는 제 2 단계와 ; 상기 제 2 단계에서 산술평균 수치가 최적 최고 압력 위치 값보다 크면 기 설정된 점화시기 값에 보정점화시기 값을 더한 값을 최적의 점화시기를 검출하여 이에 따른 점화신호를 출력하며, 이와 반대로 상기 제 2 단계에서 산술평균 수치가 최적최고 압력위치 값보다 작으면 기설정된 점화시기 값에 보정점화시기 값을 뺀 값을 최적의 점화시기로 되는 새로운 점화시기를 검출하고 이에 따른 점화신호를 출력하는 제 3 단계를 구비하는 것을 특징으로 하는 실린더 압력을 이용한 자동차의 점화식 조 정방법.Fuel pump, ignition coil, air-fuel ratio sensor to detect the amount of oxygen contained in the exhaust gas, throttle valve switch to detect the degree of opening of the throttle valve, crank angle sensor to detect the piston position based on top dead center, pressure to detect the pressure in the cylinder A method of controlling the ignition timing of a vehicle based on a pressure sensor and respective information provided from the sensors and the throttle valve switch, the method comprising the arithmetic mean value of the sensed N highest pressure positions (crank angle); A first step of obtaining an optimum maximum pressure position value for a predetermined crank angle; A second step of comparing and determining the arithmetic mean value obtained by the first step and the optimum maximum pressure position value; If the arithmetic mean value is greater than the optimum maximum pressure position value in the second step, the optimum ignition timing value is detected by adding the preset ignition timing value to the preset ignition timing value, and the ignition signal is output accordingly. A third step of detecting a new ignition time at which the optimum ignition time is obtained by subtracting the compensation ignition time value from the preset ignition time value if the arithmetic mean value is smaller than the optimum maximum pressure position value in the step; Ignition type adjustment method for a vehicle using a cylinder pressure characterized in that it comprises a. 제1항에 있어서, 상기 제 3 단계의 점화시기 조정방법은, 식 (1) 및 (2)에 의해 새로운 최적의 점화시기가 설정됨을 특징으로 하는 자동차의 점화시기 제어방법.The method of controlling the ignition timing of a vehicle as claimed in claim 1, wherein the ignition timing adjustment method of the third step comprises setting a new optimal ignition timing by equations (1) and (2). △S/T = α × TP del ----------- (1)△ S / T = α × TP del ----------- (1) S/T new = S/T old + △S/T ---------(2)S / T new = S / T old + △ S / T --------- (2) 이때 α: 점화시기의 급격한 변화를 방지하기 위한 가중지수, TPdel : 산술평균 수치(TPave)와 최적최고압력위치(TPset) 간의 차분값, S/T old : 기존의 점화시기임.Α: weighting index to prevent sudden change of ignition timing, TPdel: difference between arithmetic mean value (TPave) and optimal maximum pressure position (TPset), S / T old: existing ignition timing. 제2항에 있어서, 상기 매 사이클마다 산술평균 수치는 식 (3)에 의해 맨처음 사이클의 최고압력 위차값을 배제하고 최급의 최고압력 위치로서 설정함을 특징으로 하는 자동차의 점화시기 제어방법.The method according to claim 2, wherein the arithmetic mean value of each cycle is set as the highest pressure position by excluding the highest pressure difference value of the first cycle according to equation (3). TP ave ) new = θpmax × (1-n) + TP ave) old × n -------(3)TP ave) new = θpmax × (1-n) + TP ave) old × n ------- (3) 이때, θ pmax : 최고압력위치, n : 가중치 임.Where θ pmax is the maximum pressure position and n is the weight.
KR1019950058526A 1995-12-27 1995-12-27 Ignition timing control method for an automobile by using pressure of engine cylinder KR100226232B1 (en)

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KR1019950058526A KR100226232B1 (en) 1995-12-27 1995-12-27 Ignition timing control method for an automobile by using pressure of engine cylinder

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KR1019950058526A KR100226232B1 (en) 1995-12-27 1995-12-27 Ignition timing control method for an automobile by using pressure of engine cylinder

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KR970045392A true KR970045392A (en) 1997-07-26
KR100226232B1 KR100226232B1 (en) 1999-10-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100325154B1 (en) * 1999-12-30 2002-02-25 이계안 Method for controlling an engine ignition timming of vehicle
KR100428164B1 (en) * 2001-11-09 2004-04-28 현대자동차주식회사 Crank angle compensation using cylinder pressure sensor
KR100471225B1 (en) * 2002-05-09 2005-03-08 현대자동차주식회사 Ignition timing controlling device of vehicle and method thereof
WO2008045776A1 (en) * 2006-10-13 2008-04-17 Borgwarner Inc. Estimating engine system parameters based on engine cylinder pressure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100325154B1 (en) * 1999-12-30 2002-02-25 이계안 Method for controlling an engine ignition timming of vehicle
KR100428164B1 (en) * 2001-11-09 2004-04-28 현대자동차주식회사 Crank angle compensation using cylinder pressure sensor
KR100471225B1 (en) * 2002-05-09 2005-03-08 현대자동차주식회사 Ignition timing controlling device of vehicle and method thereof
WO2008045776A1 (en) * 2006-10-13 2008-04-17 Borgwarner Inc. Estimating engine system parameters based on engine cylinder pressure

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