JPS5632052A - Controller for fuel-air ratio - Google Patents
Controller for fuel-air ratioInfo
- 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
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
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)
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 |
-
1979
- 1979-08-23 JP JP10742179A patent/JPS5632052A/en active Pending
Cited By (5)
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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