KR950014554A - Air-fuel ratio control device of internal combustion engine - Google Patents

Air-fuel ratio control device of internal combustion engine Download PDF

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Publication number
KR950014554A
KR950014554A KR1019940028793A KR19940028793A KR950014554A KR 950014554 A KR950014554 A KR 950014554A KR 1019940028793 A KR1019940028793 A KR 1019940028793A KR 19940028793 A KR19940028793 A KR 19940028793A KR 950014554 A KR950014554 A KR 950014554A
Authority
KR
South Korea
Prior art keywords
air
fuel ratio
internal combustion
combustion engine
oxygen sensor
Prior art date
Application number
KR1019940028793A
Other languages
Korean (ko)
Other versions
KR0161699B1 (en
Inventor
마쓰시마 히데유끼
Original Assignee
요시후미 쓰지
닛산 지도샤 가부시끼가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 요시후미 쓰지, 닛산 지도샤 가부시끼가이샤 filed Critical 요시후미 쓰지
Publication of KR950014554A publication Critical patent/KR950014554A/en
Application granted granted Critical
Publication of KR0161699B1 publication Critical patent/KR0161699B1/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
    • F02D41/02—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
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller

Landscapes

  • 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

내연기관의 공연비 흐름도 제어정도를 향상시크는 것을 목적으로 한다. 내연기관의 공연비 피드백 제어에 사용하는 산소 센서의 특성이 열화등에 의해 대 측(소 측)으로 이동했을 때 산소 센서 출력에 대응하는 공연비의 특성 도표를 대(소)출력의 편차△VR(△V1)의 함수 f(△VR)(g(△VL))을 원래의 값에서 감산(가산)해서 수정한다. 이것에 의해, 산소 센서의 출력치와 공연비의 관계가 정상으로 유지되고,The purpose of the present invention is to improve the control of the air-fuel ratio flow chart of the internal combustion engine. When the characteristics of the oxygen sensor used in the air-fuel ratio feedback control of the internal combustion engine have been moved to the large side (S side) due to the deterioration variation in the characteristic diagram of the air-fuel ratio for (small) output corresponding to the oxygen sensor output △ V R (△ The function f (ΔV R ) (g (ΔV L )) of V 1 ) is subtracted (added) from the original value and corrected. As a result, the relationship between the output value of the oxygen sensor and the air-fuel ratio is kept normal.

양호한 공연비 피드백제어를 유지할 수 있다.Good air-fuel ratio feedback control can be maintained.

Description

내연기관의 공연비 제어장치Air-fuel ratio control device of internal combustion engine

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

제1도는 본 발명의 구성, 기능을 도시한 블럭도1 is a block diagram showing the configuration and function of the present invention.

제2도는 본 발명의 일 실시예의 구성도.2 is a block diagram of an embodiment of the present invention.

제3도는 상기 실시예에서 사웅한 산소 센서의 출력 특성의 도시도3 is a diagram showing the output characteristic of the oxygen sensor in the above embodiment.

Claims (1)

기관의 배기중의 산소 농도에 감응해서 출력치가 변화하는 산소센서를 갖추고, 그 산소 센서의 출력치에 대응해서 기관에 공급되는 혼합기의 공연비를 설정한 도표에 의거해 공연비를 검출하고, 공연비를 목표 공연비에 가까워지도록 피드백 제어하는 공연비 피드백 제어수단을 갖춘 내연기관의 공연비 제어장치에 있어서, 상기 산소 센서의 출력치가 안정된 기관의 특정 운전상태를 검출하는 특정 운전상 태 수단과, 상기 특정 운전상태에서의 산소 센서의 출력치에 의거해 상기 도표의 설정치를 수정하는 설정치 수정수단을 갖출 것을 특징으로 하는 내연기관의 공연비 제어장치.It is equipped with an oxygen sensor whose output value changes in response to the oxygen concentration in the engine exhaust, and detects the air-fuel ratio based on a chart that sets the air-fuel ratio of the mixer supplied to the engine corresponding to the output value of the oxygen sensor. An air-fuel ratio control apparatus for an internal combustion engine having an air-fuel ratio feedback control means for controlling feedback to be close to the air-fuel ratio, comprising: a specific operation state means for detecting a specific operation state of an engine whose output value of the oxygen sensor is stable; An air-fuel ratio control apparatus for an internal combustion engine, comprising: a set value correcting means for correcting a set value in the table based on an output value of an oxygen sensor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임※ Note: The disclosure is based on the initial application.
KR1019940028793A 1993-11-04 1994-11-03 Air fuel ratio controller for internal combustion engine KR0161699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP275722/1993 1993-11-04
JP27572293A JP3596011B2 (en) 1993-11-04 1993-11-04 Air-fuel ratio control device for internal combustion engine

Publications (2)

Publication Number Publication Date
KR950014554A true KR950014554A (en) 1995-06-16
KR0161699B1 KR0161699B1 (en) 1999-01-15

Family

ID=17559473

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940028793A KR0161699B1 (en) 1993-11-04 1994-11-03 Air fuel ratio controller for internal combustion engine

Country Status (2)

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JP (1) JP3596011B2 (en)
KR (1) KR0161699B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002364423A (en) * 2001-06-04 2002-12-18 Unisia Jecs Corp Air-fuel ratio controller for engine
US6848439B2 (en) 2001-11-08 2005-02-01 Hitachi Unisia Automotive, Ltd. Air-fuel ratio control apparatus, air-fuel ratio detecting apparatus and methods thereof for engine
JP4321520B2 (en) * 2005-12-28 2009-08-26 トヨタ自動車株式会社 POWER OUTPUT DEVICE, VEHICLE MOUNTING THE SAME, AND METHOD FOR CONTROLLING POWER OUTPUT DEVICE
DE102012208092B4 (en) * 2012-05-15 2022-02-24 Robert Bosch Gmbh Method and control unit for compensating for a voltage offset of a two-point lambda probe
JP5851569B1 (en) * 2014-08-22 2016-02-03 三菱電機株式会社 Engine control device

Also Published As

Publication number Publication date
JP3596011B2 (en) 2004-12-02
KR0161699B1 (en) 1999-01-15
JPH07127505A (en) 1995-05-16

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