JPS5618044A - Air-fuel ratio feedback control system for internal combustion engine - Google Patents
Air-fuel ratio feedback control system for internal combustion engineInfo
- Publication number
- JPS5618044A JPS5618044A JP9286379A JP9286379A JPS5618044A JP S5618044 A JPS5618044 A JP S5618044A JP 9286379 A JP9286379 A JP 9286379A JP 9286379 A JP9286379 A JP 9286379A JP S5618044 A JPS5618044 A JP S5618044A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- idling
- fuel ratio
- air
- 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 achieve proper control throughout running period of an engine in a system wherein feedback of an engine air-fuel ratio is performed, by providing a proportional component circuit which is adapted to produce different control signals at idling and normal driving, respectively.
CONSTITUTION: A signal A2 of an O2 sensor provided within an exhaust pipe is sent to a deviation detecting circuit 4 along with a comparison reference voltage signal A1. The deviation signal which undergoes operation is fed to a proportional component circuit M2 through an integration circuit M1 located in a control circuit 5. A signal A4 for indicating idling period and normal running period, and an operational amplifier signal A3 are also supplied to the circuit M2 so as to send different output signals to a comparison circuit M3 at idling and normal running periods, respectively. The circuit M3 also receives a constant amplitude oscillation signal A6 for comparison between the two to produce a signal A5 for an air volume regulator.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9286379A JPS5618044A (en) | 1979-07-20 | 1979-07-20 | Air-fuel ratio feedback control system for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9286379A JPS5618044A (en) | 1979-07-20 | 1979-07-20 | Air-fuel ratio feedback control system for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5618044A true JPS5618044A (en) | 1981-02-20 |
Family
ID=14066257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9286379A Pending JPS5618044A (en) | 1979-07-20 | 1979-07-20 | Air-fuel ratio feedback control system for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5618044A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5827848A (en) * | 1981-08-13 | 1983-02-18 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |
US4375797A (en) * | 1980-08-05 | 1983-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Air/fuel ratio feedback control system for internal combustion engines |
JPS60198348A (en) * | 1984-03-23 | 1985-10-07 | Mitsubishi Motors Corp | Engine controller |
-
1979
- 1979-07-20 JP JP9286379A patent/JPS5618044A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4375797A (en) * | 1980-08-05 | 1983-03-08 | Honda Giken Kogyo Kabushiki Kaisha | Air/fuel ratio feedback control system for internal combustion engines |
JPS5827848A (en) * | 1981-08-13 | 1983-02-18 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |
JPS60198348A (en) * | 1984-03-23 | 1985-10-07 | Mitsubishi Motors Corp | Engine controller |
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