JPS5776233A - Electronically controlled fuel injection - Google Patents

Electronically controlled fuel injection

Info

Publication number
JPS5776233A
JPS5776233A JP15062780A JP15062780A JPS5776233A JP S5776233 A JPS5776233 A JP S5776233A JP 15062780 A JP15062780 A JP 15062780A JP 15062780 A JP15062780 A JP 15062780A JP S5776233 A JPS5776233 A JP S5776233A
Authority
JP
Japan
Prior art keywords
injection quantity
fuel
output
fuel injection
ratio
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
JP15062780A
Other languages
Japanese (ja)
Other versions
JPS6354889B2 (en
Inventor
Sumio Ito
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP15062780A priority Critical patent/JPS5776233A/en
Priority to US06/257,132 priority patent/US4391253A/en
Publication of JPS5776233A publication Critical patent/JPS5776233A/en
Publication of JPS6354889B2 publication Critical patent/JPS6354889B2/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

Landscapes

  • 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)

Abstract

PURPOSE:To improve operational efficiency for an internal combustion engine which uses gasoline containing alcohol as fuel by controlling fuel injection quantity while under open loop control on the basis of a specific difference or ratio between a basic fuel injection quantity and an actual injection quantity which has been obtained under closed control. CONSTITUTION:In such an engine as air, flow of which is controlled by a throttle valve 4 and fuel injected from an electromagnetic fuel injection valve 14 are burned in the combustion chamber, an electronic control unit 15 under closed loop control corrects a calculated basic injection quantity on the basis of output from respective sensors 18 through 20 in accordance with output from an air-fuel ratio sensor 24 to control the fuel injection valve 14 by the corrected output. During this procedure, the electronic control unit 15 stores a specific difference or ratio between the basic injection quantity mentioned above and an actual injection quantity corrected in accordance with output from the air-fuel ratio sensor 24 for the purpose of obtaining an actual injection quantity while under open loop control by correcting a basic injection quantity on the basis of such difference or ratio.
JP15062780A 1980-10-29 1980-10-29 Electronically controlled fuel injection Granted JPS5776233A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15062780A JPS5776233A (en) 1980-10-29 1980-10-29 Electronically controlled fuel injection
US06/257,132 US4391253A (en) 1980-10-29 1981-04-24 Electronically controlling, fuel injection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15062780A JPS5776233A (en) 1980-10-29 1980-10-29 Electronically controlled fuel injection

Publications (2)

Publication Number Publication Date
JPS5776233A true JPS5776233A (en) 1982-05-13
JPS6354889B2 JPS6354889B2 (en) 1988-10-31

Family

ID=15500987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15062780A Granted JPS5776233A (en) 1980-10-29 1980-10-29 Electronically controlled fuel injection

Country Status (1)

Country Link
JP (1) JPS5776233A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457029A (en) * 1977-10-17 1979-05-08 Hitachi Ltd Control system for internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457029A (en) * 1977-10-17 1979-05-08 Hitachi Ltd Control system for internal combustion engine

Also Published As

Publication number Publication date
JPS6354889B2 (en) 1988-10-31

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