[go: up one dir, main page]

JPS57165645A - Control method of air-fuel ratio - Google Patents

Control method of air-fuel ratio

Info

Publication number
JPS57165645A
JPS57165645A JP5205681A JP5205681A JPS57165645A JP S57165645 A JPS57165645 A JP S57165645A JP 5205681 A JP5205681 A JP 5205681A JP 5205681 A JP5205681 A JP 5205681A JP S57165645 A JPS57165645 A JP S57165645A
Authority
JP
Japan
Prior art keywords
correction
fuel ratio
fuel
air
coefficients
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
JP5205681A
Other languages
Japanese (ja)
Other versions
JPS6345500B2 (en
Inventor
Masumi Kinugawa
Tomihide Suzuki
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 JP5205681A priority Critical patent/JPS57165645A/en
Publication of JPS57165645A publication Critical patent/JPS57165645A/en
Publication of JPS6345500B2 publication Critical patent/JPS6345500B2/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
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/263—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the program execution being modifiable by physical parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (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)

Abstract

PURPOSE:To adequately perform correction also in a range of acceleration and deceleration incapable of learning, in air-fuel control of a mixture through an fir-fuel ratio sensor, by calculating a feed amount of fuel from the latest correction value of an engine condition stored in a memory unit. CONSTITUTION:For operating conditions of an engine, idle, steady running normal load and steady running high load, an integration correction value of air- fuel ratio sensor output is compared with a prescribed value, and coefficients K1-K3, adjusted from a reference value, are multiplied to a basic fuel injection amount to calculate a fuel injection amount. Further in case of storing the coefficients K1-K3, learning control of each factor, causing an error for target air- fuel ratio, is performed, and correction is perfrmed by the latest correction coefficients K1-K3 in all ranges of operation including transient time. For instance, at idle operation, a correction amount is calculated by the latest K1 and K3 stored except K2. Accordingly, correction control can be performed without delay of a response even for change of an operational condition.
JP5205681A 1981-04-07 1981-04-07 Control method of air-fuel ratio Granted JPS57165645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5205681A JPS57165645A (en) 1981-04-07 1981-04-07 Control method of air-fuel ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5205681A JPS57165645A (en) 1981-04-07 1981-04-07 Control method of air-fuel ratio

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP13711887A Division JPS631742A (en) 1987-05-29 1987-05-29 Air-fuel ratio control method

Publications (2)

Publication Number Publication Date
JPS57165645A true JPS57165645A (en) 1982-10-12
JPS6345500B2 JPS6345500B2 (en) 1988-09-09

Family

ID=12904145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5205681A Granted JPS57165645A (en) 1981-04-07 1981-04-07 Control method of air-fuel ratio

Country Status (1)

Country Link
JP (1) JPS57165645A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910764A (en) * 1982-07-12 1984-01-20 Toyota Motor Corp Control method of air-fuel ratio in internal-combustion engine
JPS60108536A (en) * 1983-11-12 1985-06-14 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Fuel supply amount controller of internal combustion engine
JPH01106938A (en) * 1987-10-20 1989-04-24 Japan Electron Control Syst Co Ltd Control device for learning of internal combustion engine
JPH01106937A (en) * 1987-10-20 1989-04-24 Japan Electron Control Syst Co Ltd Control device for learning of internal combustion engine
JPH0354339A (en) * 1989-07-21 1991-03-08 Toyota Motor Corp Air-fuel ratio feedback control method for lpg engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910764A (en) * 1982-07-12 1984-01-20 Toyota Motor Corp Control method of air-fuel ratio in internal-combustion engine
JPS60108536A (en) * 1983-11-12 1985-06-14 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Fuel supply amount controller of internal combustion engine
JPH01106938A (en) * 1987-10-20 1989-04-24 Japan Electron Control Syst Co Ltd Control device for learning of internal combustion engine
JPH01106937A (en) * 1987-10-20 1989-04-24 Japan Electron Control Syst Co Ltd Control device for learning of internal combustion engine
JPH0354339A (en) * 1989-07-21 1991-03-08 Toyota Motor Corp Air-fuel ratio feedback control method for lpg engine

Also Published As

Publication number Publication date
JPS6345500B2 (en) 1988-09-09

Similar Documents

Publication Publication Date Title
US4345561A (en) Air-fuel ratio control method and its apparatus
JPS6183467A (en) Control device of engine
EP0134672A3 (en) Air-fuel ratio controller
JPS5654936A (en) Control method for air-fuel ratio
US4625699A (en) Method and apparatus for controlling air-fuel ratio in internal combustion engine
JPS57210137A (en) Feedback control device of air-fuel ratio in internal combustion engine
US4461261A (en) Closed loop air/fuel ratio control using learning data each arranged not to exceed a predetermined value
JPS57188744A (en) Control method for internal combustin engine
JPS53134116A (en) Fuel feeder for internal combustion engine
JPS56110539A (en) Controlling method for internal combustion engine
CA1310751C (en) Double air-fuel ratio sensor system carrying out learning control operation
JPS57165645A (en) Control method of air-fuel ratio
GB2189626A (en) Method of air/fuel ratio control for internal combustion engine
US4854124A (en) Double air-fuel ratio sensor system having divided-skip function
JPS566032A (en) Electronically controlled fuel injection system
CA1277192C (en) Double air-fuel ratio sensor system having improved response characteristics
JPS57188738A (en) Fuel control method for internal combustion engine
JPH0551776B2 (en)
JPS6469748A (en) Air-fuel ratio controller
KR900700744A (en) Running control method and apparatus for internal combustion engine
JPS5751924A (en) Electronically operated fuel injection controller for internal combustion engine
CA1256568A (en) Double air-fuel ratio sensor system carring out learning control operation
JPS6480752A (en) Control device for number of idle revolutions of engine
JP2778197B2 (en) Air-fuel ratio control device for gas engine
JPS6419137A (en) Fuel supply device for internal combustion engine