JPS5632052A - Controller for fuel-air ratio - Google Patents

Controller for fuel-air ratio

Info

Publication number
JPS5632052A
JPS5632052A JP10742179A JP10742179A JPS5632052A JP S5632052 A JPS5632052 A JP S5632052A JP 10742179 A JP10742179 A JP 10742179A JP 10742179 A JP10742179 A JP 10742179A JP S5632052 A JPS5632052 A JP S5632052A
Authority
JP
Japan
Prior art keywords
fuel
air ratio
rich
controller
stepper motor
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
JP10742179A
Other languages
Japanese (ja)
Inventor
Shigetaka Takada
Toshikatsu Haneda
Yukihiro Watanabe
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry 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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP10742179A priority Critical patent/JPS5632052A/en
Publication of JPS5632052A publication Critical patent/JPS5632052A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enhance the sensitivity of response of control by a method wherein the proportional component is added again or the time constant of the integral componet is changed in the case where a rich or lean condition of fuel-air ratio has continued for the time longer than the predetermined time period, in a controller for fuel-air ratio of an internal-combustion engine.
CONSTITUTION: The signal from an O2 sensor 5 is amplified by an operational amplifier 11, converted into a trigger signal by the signals from rectangular-wave oscillators 12, 13; the trigger signal is inputted into AND gates 21, 22, 23 and into NAND gates 20, 24, 25 through inverters 17, 18, and controls the driving circuit 16 for a stepper motor 6 so as to conduct feedback control on the fuel-air ratio of the fuel-air mixture fed to the engine. In this case, when the output of the O2 sensor 5 remain in the rich or lean condition for a long time period, the count value of a counter 15 increases proportionally, causing the stepper motor 6 to perform the reverse movement.
COPYRIGHT: (C)1981,JPO&Japio
JP10742179A 1979-08-23 1979-08-23 Controller for fuel-air ratio Pending JPS5632052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10742179A JPS5632052A (en) 1979-08-23 1979-08-23 Controller for fuel-air ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10742179A JPS5632052A (en) 1979-08-23 1979-08-23 Controller for fuel-air ratio

Publications (1)

Publication Number Publication Date
JPS5632052A true JPS5632052A (en) 1981-04-01

Family

ID=14458711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10742179A Pending JPS5632052A (en) 1979-08-23 1979-08-23 Controller for fuel-air ratio

Country Status (1)

Country Link
JP (1) JPS5632052A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158356A (en) * 1983-02-28 1984-09-07 Mazda Motor Corp Air-fuel ratio control device in engine
JPS61132745A (en) * 1984-11-30 1986-06-20 Suzuki Motor Co Ltd Air-fuel ratio controller of internal-conbustion engine
JPS62656A (en) * 1985-06-26 1987-01-06 Nissan Motor Co Ltd Method of controlling air-fuel ratio for internal-combustion engine
JPH03168342A (en) * 1989-11-28 1991-07-22 Japan Electron Control Syst Co Ltd Air-fuel ratio controller of internal combustion engine
JPH06129286A (en) * 1992-09-18 1994-05-10 Kohler Co Mixture control system of internal combusion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158356A (en) * 1983-02-28 1984-09-07 Mazda Motor Corp Air-fuel ratio control device in engine
JPS61132745A (en) * 1984-11-30 1986-06-20 Suzuki Motor Co Ltd Air-fuel ratio controller of internal-conbustion engine
JPS62656A (en) * 1985-06-26 1987-01-06 Nissan Motor Co Ltd Method of controlling air-fuel ratio for internal-combustion engine
JPH03168342A (en) * 1989-11-28 1991-07-22 Japan Electron Control Syst Co Ltd Air-fuel ratio controller of internal combustion engine
JPH06129286A (en) * 1992-09-18 1994-05-10 Kohler Co Mixture control system of internal combusion engine

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