KR950023840A - 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
KR950023840A
KR950023840A KR1019940034597A KR19940034597A KR950023840A KR 950023840 A KR950023840 A KR 950023840A KR 1019940034597 A KR1019940034597 A KR 1019940034597A KR 19940034597 A KR19940034597 A KR 19940034597A KR 950023840 A KR950023840 A KR 950023840A
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KR
South Korea
Prior art keywords
fuel ratio
air
fuel
target air
setting
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KR1019940034597A
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Korean (ko)
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KR0169511B1 (en
Inventor
히로유끼 이또야마
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쯔지 요시후미
니싼 지도샤 가부시끼가이샤
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Publication of KR950023840A publication Critical patent/KR950023840A/en
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Publication of KR0169511B1 publication Critical patent/KR0169511B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
    • 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

본 발명은 운전성을 다치는 일 없이 리인 공연비의 운전영역을 되도록 확대하는 것을 목적으로 하며, 그 극성으로는 기관 운전 조건을 검출하는 운전 조건 검출수단(1)과, 운전조건에 따라서 이론 공연비보다 리인측의 목표 공연비를 설정하는 목표 공연비 설정수단(2)과, 기관 회전수에 따라서 공연비의 리인측의 한계치를 설정하는 리인 한계치 설정수단(3)과, 설정된 목표 공연비와 한계치를 비교해서 어느 한 리치측의 값을 목표 공연비로서 선택한 공연비 선택 수단(4)과, 이 목표 공연비에 따라서 연료 공급량을 산출하는 연료 공급량 산출수단(5)과, 산출된 연료 공급량이 되게 기관에 연료를 공급하는 연료 공급수단(6)을 구비한다.The object of the present invention is to enlarge the operating area of the line air-fuel ratio without hurting the operability. The polarity of the present invention is higher than the theoretical air-fuel ratio according to the driving condition detecting means 1 for detecting the engine operating condition and the driving condition. A target air-fuel ratio setting means 2 for setting a target air-fuel ratio on the side, a rein limit value setting means 3 for setting a limit value on the re-in side of the air-fuel ratio in accordance with the engine rotational speed, and any set rich air-fuel comparison An air-fuel ratio selecting means 4 which selects the side value as a target air-fuel ratio, a fuel supply amount calculating means 5 for calculating a fuel supply amount in accordance with the target air-fuel ratio, and a fuel supply means for supplying fuel to the engine so that the calculated fuel supply amount is obtained. (6) is provided.

Description

내연기관의 공연비 제어 장치Air-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.

제2도는 마찬가지로 그 제어동작을 도시하는 플로우챠트.2 is a flowchart similarly showing the control operation.

Claims (3)

기관 운전 조건을 검출하는 운전 조건 검출수단과, 운전조건에 따라서 이론 공연비보다 리인측의 목표 공연비를 설정하는 목표 공연비 설정수단과, 기관 회전수에 따라서 공연비의 리인측의 한계치를 설정하는 리인 한계치 설정수단과. 설정된 목표 공연비와 한계치를 비교해서 어느 한 리치측의 값을 목표 공연비로서 선택하는 공연비 선택 수단과, 상기 목표 공연비에 따라서 연료 공급량을 산출하는 연료공급량 산출수단과, 산출된 연료 공급량이 되게 기관에 연료를 공급하는 연료 공급수단을 구비하는 것을 특징으로 하는 내연기관의 공연비 제어장치.Operation condition detecting means for detecting the engine operating condition, target air fuel ratio setting means for setting a target air fuel ratio on the rein-side rather than the theoretical air fuel ratio according to the driving conditions, and a rein limit value for setting a limit value of the air-fuel ratio on the re-air side according to the engine revolutions. Means. An air-fuel ratio selecting means for comparing the set target air-fuel ratio with a threshold value and selecting a value of one rich side as the target air-fuel ratio, a fuel supply amount calculating means for calculating a fuel supply amount according to the target air-fuel ratio, and a fuel to the engine to be the calculated fuel supply amount. Air-fuel ratio control device of an internal combustion engine, characterized in that it comprises a fuel supply means for supplying. 제1항에 있어서, 상기 라인 한계치 설정수단은 아이들 회전수 부근에서 이론 공연비 근처로 되며 회전수가 높아짐에 따라서 서서히 리인측으로 변화하는 공연비를 한계치로서 설정하는 것을 특징으로 하는 내연기관의 공연비 제어장치.2. An air-fuel ratio control apparatus for an internal combustion engine according to claim 1, wherein said line limit setting means sets the air-fuel ratio near the theoretical air-fuel ratio near the idle rotational speed and gradually changes to the rein side as the rotational speed increases. 기관 운전 조건을 검출하는 운전 조건 검출 수단과, 운전 조건에 따라서 이론 공연비 보다 리인측의 목표 공연비를 설정하는 목표 공연비 설정 수단과, 기관 회전수에 따라서 공연비의 리인 측의 한계치를 설정하는 리인 한계치 설정 수단과, 기관 회전수에 따라서 공연비의 리인측의 한계치를 설정하는 리인 한계치 설정수단과, 기관의 스로틀이 완전 폐쇄 상태에 있는지 어떤지를 판정하는 판정 수단과, 판정 결과가 완전 폐쇄 상태에 없을 때는 설정된 목표 공연비를 그대로 선택하고, 또 완전 폐쇄 상태인때는 목표공연비와 한계치를 비교해서 어느 한 리치측의 값을 목표 공연비로 선택하는 공연비 선택 수단과, 상기 선택된 목표 공연비에 따라서 연료 공급량을 산출하는 연료 공급량 산출 수단과, 산출된 연료 공급량이 되게 기관에 연료를 공급하는 연료 공급 수단을 구비하는 것을 특징으로 하는 내연기관의 공연비 제어장치.Operation condition detecting means for detecting the engine operating condition, target air fuel ratio setting means for setting a target air fuel ratio on the rein-side rather than the theoretical air fuel ratio according to the driving conditions, and a rein limit value for setting a limit value on the re-in side of the air fuel ratio according to the engine revolutions. Means, a rein limit setting means for setting a limit value on the rein side of the air-fuel ratio in accordance with the engine speed, a determination means for determining whether the throttle of the engine is in the fully closed state, and a set when the determination result is not in the fully closed state. An air-fuel ratio selecting means for selecting a target air-fuel ratio as it is and in a completely closed state by comparing the target air-fuel ratio with a threshold value and selecting a value of one rich side as the target air-fuel ratio; and a fuel supply amount for calculating a fuel supply amount according to the selected target air-fuel ratio Supplying the engine with a calculating means and a calculated fuel supply amount An air-fuel ratio control apparatus for an internal combustion engine, comprising a fuel supply means. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034597A 1994-01-11 1994-12-16 Engine air-fuel ratio control system KR0169511B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP06001367A JP3075060B2 (en) 1994-01-11 1994-01-11 Air-fuel ratio control device for internal combustion engine
JP94-1367 1994-01-11

Publications (2)

Publication Number Publication Date
KR950023840A true KR950023840A (en) 1995-08-18
KR0169511B1 KR0169511B1 (en) 1999-01-15

Family

ID=11499532

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940034597A KR0169511B1 (en) 1994-01-11 1994-12-16 Engine air-fuel ratio control system

Country Status (2)

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JP (1) JP3075060B2 (en)
KR (1) KR0169511B1 (en)

Also Published As

Publication number Publication date
JP3075060B2 (en) 2000-08-07
JPH07208233A (en) 1995-08-08
KR0169511B1 (en) 1999-01-15

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