KR20010038910A - control method of quantity of fuel for vehicle - Google Patents

control method of quantity of fuel for vehicle Download PDF

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Publication number
KR20010038910A
KR20010038910A KR1019990047078A KR19990047078A KR20010038910A KR 20010038910 A KR20010038910 A KR 20010038910A KR 1019990047078 A KR1019990047078 A KR 1019990047078A KR 19990047078 A KR19990047078 A KR 19990047078A KR 20010038910 A KR20010038910 A KR 20010038910A
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KR
South Korea
Prior art keywords
fuel
engine
area
areas
vehicle
Prior art date
Application number
KR1019990047078A
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Korean (ko)
Inventor
김승찬
Original Assignee
류정열
기아자동차 주식회사
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Application filed by 류정열, 기아자동차 주식회사 filed Critical 류정열
Priority to KR1019990047078A priority Critical patent/KR20010038910A/en
Publication of KR20010038910A publication Critical patent/KR20010038910A/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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2454—Learning of the air-fuel ratio control
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • 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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: A method for adjusting fuel amounting is provided to reduce exhaust gas of a car by dividing a driving area of the car, realizing a fuel amount learning correction of the corresponding area and injecting fuel amount suitable for an air fuel ratio. CONSTITUTION: A method for adjusting fuel amounting includes the steps of dividing a rotational frequency area of an engine into 12 areas, and arranging the divided areas in order according to an air amount and a rotational frequency of the engine to have different driving areas and to arrange the driving areas by learning correction step. The learning correction step divides the rotational frequency of the engine into three or more steps, dividing with the air amount of the engine and filtering value of learned areas and sorting and applying changed amounts by each area to correct the fuel learning only in a prescribed area.

Description

연료량 제어방법{control method of quantity of fuel for vehicle}Control method of quantity of fuel for vehicle

본 발명은 연료량 제어방법에 관한 것으로서 더 자세하게는 차량의 운행영역을 구분하여 각 해당 영역의 연료량 학습보정을 실현하여 공연비에 적합한 연료량을 분사하여 차량의 배기가스를 저감시키고자 하는 연료량 제어방법에 관한 것이다.The present invention relates to a fuel amount control method, and more particularly, to a fuel amount control method for reducing a vehicle's exhaust gas by injecting a fuel amount suitable for an air-fuel ratio by realizing fuel amount learning correction for each corresponding area by dividing a driving area of a vehicle. will be.

일반적으로 차량은 배기가스를 저감하기 위하여 연료량이 이론 공연비λ=1이 되도록 산소센서의 특징을 피드벡제어방법(feed back controlre)를 실시하며 특히 차량의 편차, 즉 인젝터(injector), 흡기계등의 연료에 영향을 주는 부품들의 편??편차를 고려하여 이를 보상시키기 위해 연료량 학습보정을 하여 연료량이 λ=1이 되도록 하고 있다In general, in order to reduce the exhaust gas, the characteristic of the oxygen sensor is implemented by a feed back control method such that the amount of fuel is at the theoretical air-fuel ratio λ = 1, and in particular, the deviation of the vehicle, that is, the injector, the intake system, etc. In order to compensate for the deviations of the components affecting the fuel of the fuel, the fuel quantity learning correction is made so that the fuel quantity is λ = 1.

또한 현재 차량의 연료량 보정방법은 도 1a, 도 1b에서 보는 바와 같이 운전모드에 대해서 각 나라 및 지역에서의 대기오염을 가장 효과적으로 개선하기 위하여 도시내 및 교통실태 조사를 근거로 통계적인 처리가 이루어지고 있는 것으로 주행 속도와 주행시간을 비교하여 일정한 배기패턴이 이루어질 수 있도록 하며, 또한 도 1b에서보듯이 엔진의 회전부하율에 따라 측정하고자 하는 측정점에서 배기가스의 배출정도를 측정하여 보정할 수 있도록 되어 있다.In addition, as shown in FIGS. 1A and 1B, the fuel amount correction method of the vehicle is statistically processed based on the urban and traffic condition surveys to most effectively improve air pollution in each country and region in the driving mode. By comparing the traveling speed and the traveling time, a certain exhaust pattern can be achieved, and as shown in FIG. 1B, the exhaust gas emission degree can be measured and corrected at a measuring point to be measured according to the rotational load rate of the engine. .

그러나, 이러한 종래 연료량 보정방법은 운전모드나 엔진의 회전부하에 의한 배기정도를 측정하여 배기량을 줄일 수 있도록 되어 있으나 운전영역구분이 5개 영역 내외에서 이루어지도록 되어 있어 정확한 차량의 연료량 보정에 의해 배기가스 저감이 어려운 문제점을 가지고 있다.However, in the conventional fuel amount correction method, it is possible to reduce the amount of exhaust gas by measuring the exhaust degree due to the driving mode or the rotational load of the engine, but the driving region is divided into five regions. Gas reduction has a difficult problem.

본 발명은 이와 같은 종래의 제반 문제점을 해결하기 위기 위한 것으로서 그 목적은 차량의 운행영역을 10영역 이상으로 구분하여 각 해당 영역의 연료량 학습보정이 미리 정해진 데이터에 의해 적용되어 보정될 수 있도록 하는 데 있다.The present invention is intended to solve such problems in the related art, and its purpose is to divide the driving area of the vehicle into 10 or more areas so that the fuel amount learning correction of each corresponding area can be applied and corrected by predetermined data. have.

도 1a는 종래의 차량 운행에 대한 연료량제어그래프이다.1A is a fuel amount control graph for driving a conventional vehicle.

도 1b는 종래의 엔진 회전수에 대한 연료량 제어그래프이다.1B is a fuel amount control graph for a conventional engine speed.

도 2는 본 발명의 차량 운행영역에 대한 연료량 보정영역의 그래프이다.2 is a graph of a fuel amount correction region for a vehicle driving region of the present invention.

이하, 첨부된 도면에 의해 본 발명의 기술적 구성을 상세히 설명하면 다음과 같다.Hereinafter, the technical configuration of the present invention with reference to the accompanying drawings in detail.

본 발명은 차량의 운행영역을 10영역 이상으로 구분하여 각 해당 영역의 연료량이 학습보정될 수 있도록 하는 것으로서, 도 2에서 보는 바와 같이 엔진의 소온이 일정 이상이 상태에서 엔진에 장착된 산소센서의 출력신호를 일정회수값으로 합산하여 평균화한 산출값을 학습보정으로 하는 연료량 학습보정방법을 구성한다.The present invention is to divide the driving area of the vehicle into more than 10 areas so that the fuel amount of each corresponding area can be learned and corrected, as shown in FIG. A fuel quantity learning correction method is constructed in which the output signal is summed up to a predetermined number of times and averaged.

상기 연료량 학습보정방법은 엔진의 회전수의 영역을 12영역으로 분리하고 분리된 12영역을 엔진의 공기량과 엔진회전수에 따라 각각 분리된 영역이 순차적으로 배치되도록 하여 학습이 가능학도록 하고 적용된 영역이외의 학습한 값은 0.5를 곱하여 일정 초기 학습이 이루어질 수 있도록 하는 구성을 갖는다.The fuel amount learning correction method divides the region of rotational speed of the engine into 12 regions, and the separated 12 regions are arranged so that the divided regions are sequentially arranged according to the amount of air and the engine speed of the engine. The other learned value is multiplied by 0.5 so that a certain initial learning can be made.

이와 같은 본 발명의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention in detail as follows.

본 발명은 차량의 운행영역을 10영역 이상으로 구분하여 각 해당 영역의 연료량이 학습보정될 수 있도록 하는 것으로서, 도 2에서 보는 바와 같이 차량의 운행영역을 12영역으로 나눈 후 엔진의 회전수와 엔진의 공기량에 다라 서로 다른 운행영약이 분포될 수 있도록 배치하되 운행영역을 학습보정단계로 하여 배치하게 더된다.The present invention is to divide the driving area of the vehicle into more than 10 areas so that the fuel amount of each corresponding area can be learned and corrected, and as shown in FIG. 2, the engine speed and engine speed are divided after dividing the driving area of the vehicle into 12 areas. Depending on the amount of air is arranged so that the different operating nutrients are distributed, but the operating area is arranged to be arranged in the learning correction stage.

여기서, 학습보정 단계는 엔진의 회전수를 3단계 이상으로 분리하고 이에 대해 다시 엔진의 공기량으로 분리하여 배치함으로서 차량이 일정한 영역에서만 연료학습이 보정되더라도 학습된 영역의 값을 필터링 하여 변화된 양을 각 병역별로 구분하여 미리 적용하여 보정하게 되는 것이다.Here, in the learning correction step, the engine rotation speed is separated into three or more stages, and the engine rotation amount is separated and arranged again, so that the fuel is corrected only in a certain area. It is to be corrected by applying in advance by dividing by military service.

이와 같이 작용하는 본 발명은 차량의 운행영역을 10영역 이상으로 구분하여 각 해당 영역의 연료량 학습보정이 미리 정해진 데이터에 의해 적용되어 보정될 수 있도록 하는 효과를 갖는다.The present invention acting as described above has an effect of dividing the driving area of the vehicle into 10 or more areas so that the fuel amount learning correction of each corresponding area can be applied and corrected by predetermined data.

Claims (1)

엔진의 소온이 일정 이상이 상태에서 엔진에 장착된 산소센서의 출력신호를 일정회수값으로 합산하여 평균화한 산출값을 학습보정으로 하는 연료량 학습보정시키는 차량에 있어서, 상기 엔진의 회전수의 영역을 12영역으로 분리하고 분리된 12영역을 엔진의 공기량과 엔진회전수에 따라 각각 분리된 영역이 순차적으로 배치되도록 하여 학습이 가능학도록 하고 적용된 영역이외의 학습한 값은 0.5를 곱하여 일정 초기 학습이 이루어질 수 있도록 연료량을 제어하는 연료량 제어방법.In a vehicle for learning fuel correction, in which the output value of an oxygen sensor mounted on the engine is added to a predetermined number of times and the average value of the engine is set as a learning correction in a state where the engine temperature is more than a predetermined temperature, the engine speed range is adjusted. 12 zones are divided, and 12 zones are separated according to the amount of engine air and engine speed so that learning can be done sequentially. A fuel amount control method for controlling the fuel amount to be made.
KR1019990047078A 1999-10-28 1999-10-28 control method of quantity of fuel for vehicle KR20010038910A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412048A (en) * 1987-07-02 1989-01-17 Nissan Motor Fuel control apparatus of internal combustion engine
JPS6424139A (en) * 1987-07-16 1989-01-26 Nissan Motor Air-fuel ratio control device for internal combustion engine
JPH01224432A (en) * 1988-03-02 1989-09-07 Fujitsu Ten Ltd Electronic type fuel injection control system
JPH02191838A (en) * 1989-01-20 1990-07-27 Nippondenso Co Ltd Air-fuel ratio control method
KR900016598A (en) * 1988-04-26 1990-11-14 미다 가쓰시게 Fuel supply amount control device for internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412048A (en) * 1987-07-02 1989-01-17 Nissan Motor Fuel control apparatus of internal combustion engine
JPS6424139A (en) * 1987-07-16 1989-01-26 Nissan Motor Air-fuel ratio control device for internal combustion engine
JPH01224432A (en) * 1988-03-02 1989-09-07 Fujitsu Ten Ltd Electronic type fuel injection control system
KR900016598A (en) * 1988-04-26 1990-11-14 미다 가쓰시게 Fuel supply amount control device for internal combustion engine
JPH02191838A (en) * 1989-01-20 1990-07-27 Nippondenso Co Ltd Air-fuel ratio control method

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