JPS5741442A - Method of controlling air fuel ratio in internal combustion engine - Google Patents

Method of controlling air fuel ratio in internal combustion engine

Info

Publication number
JPS5741442A
JPS5741442A JP11692180A JP11692180A JPS5741442A JP S5741442 A JPS5741442 A JP S5741442A JP 11692180 A JP11692180 A JP 11692180A JP 11692180 A JP11692180 A JP 11692180A JP S5741442 A JPS5741442 A JP S5741442A
Authority
JP
Japan
Prior art keywords
fuel ratio
pulse width
air fuel
internal combustion
combustion engine
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
JP11692180A
Other languages
Japanese (ja)
Inventor
Masakazu Ninomiya
Atsushi 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 JP11692180A priority Critical patent/JPS5741442A/en
Priority to DE19813133911 priority patent/DE3133911A1/en
Publication of JPS5741442A publication Critical patent/JPS5741442A/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
    • F02D41/24—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
    • 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
    • F02D41/1497—With detection of the mechanical response of the engine
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1015—Engines misfires

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: To bring engine output close to maximum output value by comparing rotary cycles when at least two different air fuel ratio values are selected near a target air fuel ratio for running.
CONSTITUTION: A microcomputer type calculating circuit 6 energized by a battery 7 on a vehicle and driven by a power circuit 8 is provided to carry out calculating processes of respective base, rich and lean steps and comparative judgment. And rotaty cycles are compared when at least two different air fuel ratio values are selected near a target air fuel ratio for running. Namely, base fuel injection pulse width is figured out in the calculating circuit 6 according to signals of an intake pipe pressure sensor 3, and correction pulse width is added to said pulse width to obtain fuel injection pulse width. Further the signal of this pulse width is supplied to an injection valve 5 which is driven by signals of rotational angle sensor 4 synchronized with the rotation of internal combustion engine body 1 to intermittently inject fuel.
COPYRIGHT: (C)1982,JPO&Japio
JP11692180A 1980-08-27 1980-08-27 Method of controlling air fuel ratio in internal combustion engine Pending JPS5741442A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11692180A JPS5741442A (en) 1980-08-27 1980-08-27 Method of controlling air fuel ratio in internal combustion engine
DE19813133911 DE3133911A1 (en) 1980-08-27 1981-08-27 Method and device for controlling the fuel-air ratio for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11692180A JPS5741442A (en) 1980-08-27 1980-08-27 Method of controlling air fuel ratio in internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5741442A true JPS5741442A (en) 1982-03-08

Family

ID=14698959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11692180A Pending JPS5741442A (en) 1980-08-27 1980-08-27 Method of controlling air fuel ratio in internal combustion engine

Country Status (2)

Country Link
JP (1) JPS5741442A (en)
DE (1) DE3133911A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746045A (en) * 1980-09-05 1982-03-16 Nippon Denso Co Ltd Air fuel ratio control method of internal combustion engine
DE3403395A1 (en) * 1984-02-01 1985-08-08 Robert Bosch Gmbh, 7000 Stuttgart FUEL-AIR MIXING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789816A (en) * 1973-03-29 1974-02-05 Bendix Corp Lean limit internal combustion engine roughness control system
DE2417187C2 (en) * 1974-04-09 1982-12-23 Robert Bosch Gmbh, 7000 Stuttgart Method and device for regulating the operating behavior of an internal combustion engine
DE2507055C2 (en) * 1975-02-19 1984-11-22 Robert Bosch Gmbh, 7000 Stuttgart Method (optimization method) and device for regulating an internal combustion engine
US4026251A (en) * 1975-11-26 1977-05-31 Pennsylvania Research Corporation Adaptive control system for power producing machines
JPS6060019B2 (en) * 1977-10-17 1985-12-27 株式会社日立製作所 How to control the engine
DE2941977A1 (en) * 1979-10-17 1981-04-30 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR OPTIMIZING THE OPERATING CHARACTERISTICS OF AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
DE3133911A1 (en) 1982-03-25
DE3133911C2 (en) 1990-03-01

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