JPS54142419A - Air-fuel-ratio control method - Google Patents

Air-fuel-ratio control method

Info

Publication number
JPS54142419A
JPS54142419A JP4992778A JP4992778A JPS54142419A JP S54142419 A JPS54142419 A JP S54142419A JP 4992778 A JP4992778 A JP 4992778A JP 4992778 A JP4992778 A JP 4992778A JP S54142419 A JPS54142419 A JP S54142419A
Authority
JP
Japan
Prior art keywords
output
fuel
period
sensor
average
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
JP4992778A
Other languages
Japanese (ja)
Inventor
Takeshi Atago
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.)
Automob Antipollut & Saf Res Center
Automobile Appliance Anti Pollution and Safety Research Center
Original Assignee
Automob Antipollut & Saf Res Center
Automobile Appliance Anti Pollution and Safety Research Center
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 Automob Antipollut & Saf Res Center, Automobile Appliance Anti Pollution and Safety Research Center filed Critical Automob Antipollut & Saf Res Center
Priority to JP4992778A priority Critical patent/JPS54142419A/en
Publication of JPS54142419A publication Critical patent/JPS54142419A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To save fuel and purify exhaust gas by supplying air-fuel-mixture at a proper air-fuel-ratio determined by comparison of an O2 sensor output with a reference voltage level the average of the maximum and minimum output of the O2 sensor.
CONSTITUTION: As a reference level b' is the average value Vm of the maximum and minimum output from an O2 sensor, an on period and off period are equal in a square wave of the output c' from a comparator 7 and a charge period and discharge period of the output d' from a proportion integrator 8 are equal so that an average voltage may be kept constant. The reference level b' the average value Vm meets with three original points. When a comparator 9 compares the outpyt d' from the proportion integrator 8 with the output e' from a delta wave oscillator 10, the output d' is pulled back to the three original point. An average voltage 4 of the output e' from the delta wave oscillator 10 is corrected by a difference between Vm and V. The resulting output f runs an actuator 6 to offer proper air-fuel-ratio.
COPYRIGHT: (C)1979,JPO&Japio
JP4992778A 1978-04-28 1978-04-28 Air-fuel-ratio control method Pending JPS54142419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4992778A JPS54142419A (en) 1978-04-28 1978-04-28 Air-fuel-ratio control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4992778A JPS54142419A (en) 1978-04-28 1978-04-28 Air-fuel-ratio control method

Publications (1)

Publication Number Publication Date
JPS54142419A true JPS54142419A (en) 1979-11-06

Family

ID=12844641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4992778A Pending JPS54142419A (en) 1978-04-28 1978-04-28 Air-fuel-ratio control method

Country Status (1)

Country Link
JP (1) JPS54142419A (en)

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