KR870010286A - Fuel control method and device - Google Patents

Fuel control method and device Download PDF

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KR870010286A
KR870010286A KR870003293A KR870003293A KR870010286A KR 870010286 A KR870010286 A KR 870010286A KR 870003293 A KR870003293 A KR 870003293A KR 870003293 A KR870003293 A KR 870003293A KR 870010286 A KR870010286 A KR 870010286A
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area
pulse width
correction amount
driving state
injection pulse
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KR870003293A
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Korean (ko)
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기요미 모리타
쥰지 미야케
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미타 가츠시게
가부시키가이샤 히타치세이사쿠쇼
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Publication of KR870010286A publication Critical patent/KR870010286A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2409Addressing techniques specially adapted therefor
    • F02D41/2419Non-linear variation along at least one coordinate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425Particular ways of programming the data
    • F02D41/2429Methods of calibrating or learning
    • F02D41/2441Methods of calibrating or learning characterised by the learning conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425Particular ways of programming the data
    • F02D41/2429Methods of calibrating or learning
    • F02D41/2451Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2454Learning of the air-fuel ratio control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425Particular ways of programming the data
    • F02D41/2429Methods of calibrating or learning
    • F02D41/2441Methods of calibrating or learning characterised by the learning conditions
    • F02D41/2445Methods of calibrating or learning characterised by the learning conditions characterised by a plurality of learning conditions or ranges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425Particular ways of programming the data
    • F02D41/2487Methods for rewriting

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

Abstract

내용 없음No content

Description

연료제어방법 및 그 장치Fuel control method and device

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

제1도는 공연비 보정량 맵의 개념도.1 is a conceptual diagram of an air-fuel ratio correction amount map.

제2도는 본원 발명에 있어서의 공연비 보정량 맵과 회전수 테이블과 기본펄스폭 테이블의 일실시예의 구성을 나타내는 도면.2 is a diagram showing the configuration of an embodiment of an air-fuel ratio correction amount map, a rotation speed table, and a basic pulse width table in the present invention.

제3도는 O2센서에 의한 공연비 피드백제어시스템을 갖춘 엔진의 블록다이어그램.3 is a block diagram of an engine with an air-fuel ratio feedback control system by an O 2 sensor.

제4도는 본원 발명에 있어서의 공연비 보정량을 결정하는 방법을 설명하기 위한 도면.4 is a diagram for explaining a method for determining an air-fuel ratio correction amount in the present invention.

제5도는 보원 발명의 일실시예에 있어서의 공연비 보정량을 결정하는 순서를 나타내는 플로차트.5 is a flowchart showing a procedure for determining an air-fuel ratio correction amount in one embodiment of the invention.

Claims (6)

엔진의 운전상태를 차례로 검출하여, 이 운전상태에 따른 연료분사 펄스폭과 펄스폭 보정량에 따라서 연료분사시간을 결정하는 연료분사시스템의 제어장치에 있어서,In the control apparatus of the fuel injection system which detects the operation state of an engine in order, and determines a fuel injection time according to the fuel injection pulse width and pulse width correction amount concerning this operation state, 엔진의 운전상태를 대표하는 파라미터를 복수의 영역으로 구분한 제1의 테이블과,A first table dividing a parameter representing a driving state of the engine into a plurality of areas; 상기 테이블의 각 영역에 대응한 복수의 에리어를 가지고, 이 각 에리어는 각각 기본분사펄스폭의 보정량을 지정하는 보정량 맵과,A plurality of areas corresponding to each area of the table, each area having a correction amount map specifying a correction amount of the basic injection pulse width; 상기 제1의 테이블에서 현재의 운전상태에 대응하는 상기 보정량 맵의 에리어번지를 결정하고, 이 현재의 운전상태에 대응하는 에리어번지와 앞의 운전상태에 대응하는 에리어번지가 동일한지의 여부를 판정하는 수단과,Determining the area address of the correction amount map corresponding to the current driving state from the first table, and determining whether the area address corresponding to the current driving state and the area address corresponding to the previous driving state are the same; Sudan, 상기 판정수단이 앞의 운전상태와 현재의 운전상태에 대응하는 에리어번지가 불일치라고 판정했을 때에 상기 제1의 테이블의 복수의 각 영역의 범위를 소정량만큼 확장하는 연산수단과,Arithmetic means for extending the range of each of the plurality of areas of the first table by a predetermined amount when the judging means judges that the area address corresponding to the previous driving state and the current driving state is inconsistent; 상기 연산수단으로 확장된 복수의 영역으로 구분된 제2의 테이블과,A second table divided into a plurality of areas extended by the calculation means; 상기 판정수단이 앞의 운전상태에 대응하는 에리어번지와 현재의 운전상태에 대응하는 에리어번지가 일치하고 있다고 판정했을 때에, 상기 제1의 테이블에서 결정되는 상기 보정량 맵의 에리어 번지로 지정되는 보정량을 판독하고, 상기 판정수단이 앞의 운전상태에 대응하는 에리어번지와 현재의 운전상태에 대응하는 에리어번지가 불일치라고 판정했을 때에, 상기 제2의 테이블에서 결정되는 상기 보정량 맵의 에리어번지의 보정량을 판독하는 보정량 판독수단으로 이루어진 것을 특징으로 하는 연료제어장치.When the judging means determines that the area address corresponding to the previous driving state and the area address corresponding to the current driving state coincide, the correction amount specified as the area address of the correction amount map determined in the first table is determined. When the judging means judges that the area address corresponding to the previous driving state and the area address corresponding to the current driving state are inconsistent, the correction amount of the area address of the correction amount map determined in the second table is determined. And a correction amount reading means for reading. 제1항에 있어서, 상기 제1과 제2의 테이블은 각각 엔진의 부하에 대응한 기본 분사펄스폭을 복수의 영역으로 구분한 기본분사 펄스폭테이블과, 엔진의 회전수를 복수의 영역으로 구분한 회전수 테이블을 포함한 것을 특징으로 하는 연료제어장치.2. The apparatus of claim 1, wherein the first and second tables each include a basic injection pulse width table in which basic injection pulse widths corresponding to an engine load are divided into a plurality of regions, and a rotation speed of the engine into a plurality of regions. A fuel control device comprising a speed table. 엔진의 운전상태를 차례로 검출하고, 이 운전상태에 따른 연료분사펄스폭과 펄스폭 보정량에 따라서 연료분사시간을 결정하는 동시에, 배기가스 중에 놓여지는 O2센서에 의해서 엔진의 공연비를 이론혼합비가 되도록 연료분사시간을 피드백 제어하고, 이 제어량을 최소로 하도록 상기 펄스폭 보정량을 차례로 갱신하도록 한 연료분사시스템의 제어장치에 있어서,The engine operating state is detected in order, the fuel injection time is determined according to the fuel injection pulse width and the pulse width correction amount according to the operation state, and the air-fuel ratio of the engine is set to the theoretical mixing ratio by the O 2 sensor placed in the exhaust gas. A control apparatus of a fuel injection system in which the fuel injection time is feedback-controlled and the pulse width correction amount is sequentially updated so as to minimize the control amount. 기본 분사펄스폭을 복수의 영역으로 구분한 제1의 기본 분사펄스폭 테이블과,A first basic injection pulse width table in which the basic injection pulse width is divided into a plurality of areas; 엔진의 회전수를 복수의 영역으로 구분한 제1의 회전수 테이블과,A first rotational speed table that divides the rotational speed of the engine into a plurality of regions; 상기 양 테이블의 각 영역에 대응한 복수의 에리어를 가지며, 이 각 에리어는 각각 기본 분사펄스폭의 보정량을 지정하는 보정량 맵과,A plurality of areas corresponding to respective areas of the two tables, each area having a correction amount map specifying a correction amount of the basic injection pulse width, respectively; 상기 제1의 기본 분사펄스폭 테이블과 상기 제1의 회전수 테이블로부터 현재의 운전상태에 대응하는 상기 보정량 맵의 에리어를 결정하고, 이 현재의 운전상태에 대응하는 에리어와 앞의 운전상태에 대응하는 에리어가 동일한지의 여부를 판정하는 수단과,The area of the correction amount map corresponding to the current driving state is determined from the first basic injection pulse width table and the first rotational speed table, and the area corresponding to the current driving state and the previous driving state are corresponding. Means for determining whether or not the area to be made is the same; 상기 판정수단이 앞의 운전상태와 현재의 운전상태에 대응하는 에리어가 불일치하고 판정했을 때에, 상기 제1의 기본 분사펄스폭 테이블과 상기 제1의 회전수 테이블의 복수의 각 영역의 범위를 소정량 확장하는 연산수단과,When the judging means judges that the area corresponding to the previous operation state and the current operation state is inconsistent, the range of each of the plurality of areas of the first basic injection pulse width table and the first rotation speed table is reduced. Calculation means for quantitative expansion, 상기 연산수단으로 확장된 복수의 영역으로 구분된 제2의 기본 분사펄스폭 테이블과,A second basic injection pulse width table divided into a plurality of areas extended by the calculation means; 상기 연산수단으로 확장된 복수의 영역으로 구분된 제2의 회전수 테이블과,A second rotation speed table divided into a plurality of areas extended by the calculation means; 상기 판정수단이 앞의 운전상태에 대응하는 에리어와 현재의 운전상태에 대응하는 에리어가 일치하고 있다고 판정했을 때에, 상기 제1의 기본 분사펄스폭 테이블과 상기 제1의 회전수 테이블로 결정되는 상기 보정량 맵의 에리어의 보정량을 판독하고, 상기 판정수단이 앞의 운전상태에 대응하는 에리어와 현재의 운전상태에 대응하는 에리어가 불일치라고 판정했을 때에, 상기 제2의 기본 분사펄스폭 테이블과 상기 제2의 회전수 테이블로 결정되는 상기 보정량 맵의 에리어의 보정량을 판독하는 보정량 판독수단으로 이루어진 것을 특징으로 하는 연료제어장치.The determination means determined by the first basic injection pulse width table and the first rotational speed table when the determining means determines that the area corresponding to the previous driving state and the area corresponding to the current driving state match. When the correction amount of the area of the correction amount map is read, and the determination means determines that the area corresponding to the previous driving state and the area corresponding to the current driving state are inconsistency, the second basic injection pulse width table and the first And a correction amount reading means for reading a correction amount of the area of the correction amount map determined by the rotation speed table of two. 엔진의 운전상태를 차례로 검출하고, 이 운전상태에 따른 연료분사 펄스폭과 펄스폭 보정량에 따라서 연료분사시간을 결정하고, 엔진의 운전상태에 대응해서 복수의 영역으로 분할한 제1의 테이블과 이테이블의 각 영역에 대응하는 이 펄스폭 보정량을 지시하는 복수의 에리어를 가진 보정량 맵을 구비하는 연료분사시스템의 제어방법에 있어서,The first table obtained by detecting the operating state of the engine in sequence, determining the fuel injection time according to the fuel injection pulse width and the pulse width correction amount according to the operating state, and dividing the fuel injection time into a plurality of areas corresponding to the operating state of the engine. In the control method of the fuel injection system provided with the correction amount map which has a some area which instructs this pulse width correction amount corresponding to each area | region of a table, 현재의 운전상태에 대응하는 상기 테이블의 영역을 판독하고,Reading the area of the table corresponding to the current operating state, 상기 판독한 영역에 대응하는 상기 맵의 에리어번지를 판독하며,Reading an area address of the map corresponding to the read area, 상기 판독한 맵의 에리어번지와 앞의 운전상태에 대응하는 에리어번지가 일치하는지의 여부를 판정하고It is determined whether the area address of the read map and the area address corresponding to the previous driving state match. 상기 판정이 일치할 경우, 판독한 상기 맵의 에리어번지의 펄스폭 보정량을 판독하고,If the determination is correct, the pulse width correction amount of the area address of the read map is read, 상기 판정이 불일치하는 경우, 다음의 스텝을 향하고,If the determination is inconsistent, heading to the next step, 앞의 운전상태에 대응하는 에리어번지를 현재의 운전상태에 대응하는 에리어번지로 고쳐쓰고,Rewrite the area address corresponding to the previous operation state to the area address corresponding to the current operation state, 상기 테이블의 영역을 소정량 확장하고,Extend the area of the table a predetermined amount 상기 확장된 영역을 제2의 테이블에 기입하고,Write the expanded area to a second table, 상기 확사ㅈㅇ한 제2의 테이블로부터 현재의 운전상태에 대응하는 영역을 판독하고,Read the area corresponding to the current operating state from the expanded second table, 상기 판독한 제2의 테이블의 영역에서 상기 맵의 이 영역에 대응하는 에리어번지를 판독하고,An area address corresponding to this area of the map is read from the area of the read second table, 상기 맵으로부터 판독한 에리어번지의 펄스폭 보정량을 판독하는 스텝으로 이루어지는 것을 특징으로 하는 연료제어방법.And a step of reading the pulse width correction amount of the area address read from the map. 제4항에 있어서, 상기 제1과 제2의 테이블은 엔진의 부하에 대응한 기본 분사펄스폭을 복수의 영역으로 구분한 기본 분사펄스폭 테이블과, 엔진의 회전수를 복수의 영역으로 구분한 회전수 테이블로 이루어지며, 상기 기본 분사펄스폭 테이블의 영역과 상기 회전수 테이블의 영역이 지정되면, 대응하는 상기 보정량 맵의 에리어번지가 결정되고, 상기 테이블의 영역을 판독하는 스텝은 상기 기본분사 펄스폭 테이블과 상기 회전수테이블의 각 영역을 판독하고, 상기 테이블의 영역을 확장하는 스텝은 상기 기본 분사펄스폭 테이블과 상기 회전수테이블의 각 영역을 각각 소정량 확장하는 것을 특징으로 하는 연료제어방법.The method of claim 4, wherein the first and second tables are divided into a basic injection pulse width table in which the basic injection pulse width corresponding to the load of the engine is divided into a plurality of areas, and a rotation speed of the engine is divided into a plurality of areas. When the area of the basic injection pulse width table and the area of the rotation speed table are designated, the area address of the corresponding correction amount map is determined, and the step of reading the area of the table is performed by the rotational speed table. The step of reading each area of the pulse width table and the rotation speed table, and expanding the area of the table, extends each region of the basic injection pulse width table and the rotation speed table by a predetermined amount. Way. 제5항에 있어서, 상기 테이박의 영역을 확장하는 스텝은 이 영역의 하한치를 소정량만큼 작게하고, 상한치를 소정량만큼 크게하는 것을 특징으로 하는 연료제어방법.6. The fuel control method according to claim 5, wherein the step of expanding the area of the tape foil reduces the lower limit of the area by a predetermined amount and increases the upper limit by a predetermined amount. ※ 참고사항: 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the original application.
KR870003293A 1986-04-09 1987-04-07 Fuel control method and device KR870010286A (en)

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JP81647 1986-04-09
JP61081647A JPS62240447A (en) 1986-04-09 1986-04-09 Fuel control device

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