JPS57143134A - Method of controlling air fuel ratio - Google Patents

Method of controlling air fuel ratio

Info

Publication number
JPS57143134A
JPS57143134A JP2950381A JP2950381A JPS57143134A JP S57143134 A JPS57143134 A JP S57143134A JP 2950381 A JP2950381 A JP 2950381A JP 2950381 A JP2950381 A JP 2950381A JP S57143134 A JPS57143134 A JP S57143134A
Authority
JP
Japan
Prior art keywords
fuel ratio
air fuel
compensation
sensor
command
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.)
Granted
Application number
JP2950381A
Other languages
Japanese (ja)
Other versions
JPS6313013B2 (en
Inventor
Toshiaki Mizuno
Toshimi Matsumura
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.)
Denso Corp
Original Assignee
NipponDenso Co 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP2950381A priority Critical patent/JPS57143134A/en
Publication of JPS57143134A publication Critical patent/JPS57143134A/en
Publication of JPS6313013B2 publication Critical patent/JPS6313013B2/ja
Granted 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
    • F02D41/24—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

Abstract

PURPOSE:To always control the air fuel ratio of an engine to a command, by using a modifying quantity corresponding to a compensation quantity resulting from feedback control based on the composition of exhaust gas, to sequentially modify a learned quantity which is one of compensation quantities for equalizing the air fuel ratio to the command and indicates information for compensating the condition of the engine. CONSTITUTION:Output information from a rotational frequency sensor 101, an interruption control section 102, a digital input port 103 connected to an air fuel ratio sensor 14 and a starting switch 16 and an analogue input port 104 connected to an intake quantity sensor 11, an intake temperature sensor 12 and a cooling water temperature sensor 13 is transmitted to a microprocessor 100 through a common bus 150. The microprocessor 100 calculates the period of opening of an electromagnetic fuel injection valve 5 and sends out a signal indicating the period. Compensation quantities, which are determined on the basis of the quantity of supplied fuel to equalize the air fuel ratio to a command, are stored in a random access memory 107. Among the compensation quantities, a learned quantity which indicates information for compensating the condition of the engine is sequentially modified by a modifying quantity corresponding to a compensation quantity resulting from feedback control based on the composition of exhaust gas, to compensate the quantity of supplied fuel.
JP2950381A 1981-03-02 1981-03-02 Method of controlling air fuel ratio Granted JPS57143134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2950381A JPS57143134A (en) 1981-03-02 1981-03-02 Method of controlling air fuel ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2950381A JPS57143134A (en) 1981-03-02 1981-03-02 Method of controlling air fuel ratio

Publications (2)

Publication Number Publication Date
JPS57143134A true JPS57143134A (en) 1982-09-04
JPS6313013B2 JPS6313013B2 (en) 1988-03-23

Family

ID=12277882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2950381A Granted JPS57143134A (en) 1981-03-02 1981-03-02 Method of controlling air fuel ratio

Country Status (1)

Country Link
JP (1) JPS57143134A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045749A (en) * 1983-08-22 1985-03-12 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning controller of electronic fuel injection type internal-combustion engine
JPS6073335A (en) * 1983-09-30 1985-04-25 Isuzu Motors Ltd Accuracy correcting apparatus of engine operation state detector
JPS6090944A (en) * 1983-10-24 1985-05-22 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning control apparatus for electronically controlled fuel injection type internal-combustion engine
JPS60195342A (en) * 1984-03-19 1985-10-03 Hitachi Ltd Engine controller
JPS61132748A (en) * 1984-11-29 1986-06-20 Fuji Heavy Ind Ltd Electronic control system of car engine
JPS6357839A (en) * 1986-08-27 1988-03-12 Japan Electronic Control Syst Co Ltd Electronic control fuel injection system for internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH063112U (en) * 1991-01-17 1994-01-18 株式会社ダイリュー Arm band

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045749A (en) * 1983-08-22 1985-03-12 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning controller of electronic fuel injection type internal-combustion engine
JPS6073335A (en) * 1983-09-30 1985-04-25 Isuzu Motors Ltd Accuracy correcting apparatus of engine operation state detector
JPS6090944A (en) * 1983-10-24 1985-05-22 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning control apparatus for electronically controlled fuel injection type internal-combustion engine
JPS6346254B2 (en) * 1983-10-24 1988-09-14 Nippon Denshi Kiki Kk
JPS60195342A (en) * 1984-03-19 1985-10-03 Hitachi Ltd Engine controller
JPH0313416B2 (en) * 1984-03-19 1991-02-22 Hitachi Ltd
JPS61132748A (en) * 1984-11-29 1986-06-20 Fuji Heavy Ind Ltd Electronic control system of car engine
JPS6357839A (en) * 1986-08-27 1988-03-12 Japan Electronic Control Syst Co Ltd Electronic control fuel injection system for internal combustion engine

Also Published As

Publication number Publication date
JPS6313013B2 (en) 1988-03-23

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