JPS5776239A - Controlling method for air fuel ratio of internal combustion engine - Google Patents

Controlling method for air fuel ratio of internal combustion engine

Info

Publication number
JPS5776239A
JPS5776239A JP15077080A JP15077080A JPS5776239A JP S5776239 A JPS5776239 A JP S5776239A JP 15077080 A JP15077080 A JP 15077080A JP 15077080 A JP15077080 A JP 15077080A JP S5776239 A JPS5776239 A JP S5776239A
Authority
JP
Japan
Prior art keywords
signal
lean
inversion
rich
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
JP15077080A
Other languages
Japanese (ja)
Inventor
Yuji Takeda
Toshio Suematsu
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 JP15077080A priority Critical patent/JPS5776239A/en
Publication of JPS5776239A publication Critical patent/JPS5776239A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent the exhaust emission from being deteriorated by a method wherein the skip action is interrupted when the inversion of the output of an oxygen concentration detector from lean signal to rich signal and the inversion of that from rich signal to lean signal are generated continuously in a short time.
CONSTITUTION: An electronic controlling unit 14 converts the rich and lean signals from the oxygen concentration detector 46 to controlling signals which control the injection quantity at a fuel injection valve 15. When the output of said detector 46 changes from the lean signal to the rich signal or vice versa, the controlling signal level is skipped by the respective predetermined different values. At this time, the skip generated by said inversion from the lean signal to the rich signal or in reversion from the rich signal to the lean signal or the generation of ship due to said inversion is detected and, when said inversion occurs again within the predetermined period of time after the detection, the skip action is interrupted.
COPYRIGHT: (C)1982,JPO&Japio
JP15077080A 1980-10-29 1980-10-29 Controlling method for air fuel ratio of internal combustion engine Pending JPS5776239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15077080A JPS5776239A (en) 1980-10-29 1980-10-29 Controlling method for air fuel ratio of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15077080A JPS5776239A (en) 1980-10-29 1980-10-29 Controlling method for air fuel ratio of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5776239A true JPS5776239A (en) 1982-05-13

Family

ID=15504032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15077080A Pending JPS5776239A (en) 1980-10-29 1980-10-29 Controlling method for air fuel ratio of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5776239A (en)

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