JPS6456938A - Air-fuel ratio controller for engine - Google Patents

Air-fuel ratio controller for engine

Info

Publication number
JPS6456938A
JPS6456938A JP9445087A JP9445087A JPS6456938A JP S6456938 A JPS6456938 A JP S6456938A JP 9445087 A JP9445087 A JP 9445087A JP 9445087 A JP9445087 A JP 9445087A JP S6456938 A JPS6456938 A JP S6456938A
Authority
JP
Japan
Prior art keywords
intake
air quantity
sensor
fuel ratio
correction coefficient
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP9445087A
Other languages
Japanese (ja)
Inventor
Masaru Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Heavy Industries Ltd
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.)
Filing date
Publication date
Application filed by Fuji Heavy Industries Ltd filed Critical Fuji Heavy Industries Ltd
Priority to JP9445087A priority Critical patent/JPS6456938A/en
Publication of JPS6456938A publication Critical patent/JPS6456938A/en
Pending legal-status Critical Current

Links

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
    • F02D41/1456—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 with sensor output signal being linear or quasi-linear with the concentration of oxygen

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To obtain the optimum air-fuel ratio by correcting the time lag of a linear exhaust sensor and measuring the intake air quantity, etc., corresponding to the lean spike, etc., generated in the transient operation state and allowing the correction coefficient to learn so as to cope with to the demanded air-fuel ratio on the basis of the above-described measurement value. CONSTITUTION:An air cleaner 2 communicated to the intake manifold 6 of an engine body 1 through a suction pipe 3 and an intake passage 7 formed in an intake air quantity sensor 11. A temperature compensation plug 9 and a hog plug 10 of a controller 11a for measuring the intake air quantity is installed in a bypass passage 8 installed in the intake passage 7. A detection signal supplied from the intake air quantity sensor 11 is inputted into a control circuit 17, together with each detection signal supplied from a linear exhaust sensor 13 and a throttle opening degree sensor 14. In this case, the prescribed calculation is carried out in the control circuit 17, and the actual spike generation time and the acceleration/deceleration correction coefficient are calculated, and the pertinent area of an acceleration/deceleration correction coefficient map is successively rewritten according to the result of calculation.
JP9445087A 1987-04-17 1987-04-17 Air-fuel ratio controller for engine Pending JPS6456938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9445087A JPS6456938A (en) 1987-04-17 1987-04-17 Air-fuel ratio controller for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9445087A JPS6456938A (en) 1987-04-17 1987-04-17 Air-fuel ratio controller for engine

Publications (1)

Publication Number Publication Date
JPS6456938A true JPS6456938A (en) 1989-03-03

Family

ID=14110598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9445087A Pending JPS6456938A (en) 1987-04-17 1987-04-17 Air-fuel ratio controller for engine

Country Status (1)

Country Link
JP (1) JPS6456938A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100298709B1 (en) * 1997-08-30 2001-10-26 이계안 Method for compensating for map output value when accelerating/decelerating vehicle
US6772493B2 (en) 2000-06-23 2004-08-10 Fanuc Ltd Workpiece changing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100298709B1 (en) * 1997-08-30 2001-10-26 이계안 Method for compensating for map output value when accelerating/decelerating vehicle
US6772493B2 (en) 2000-06-23 2004-08-10 Fanuc Ltd Workpiece changing system

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