JPS5644434A - Control of air-fuel ratio - Google Patents
Control of air-fuel ratioInfo
- Publication number
- JPS5644434A JPS5644434A JP12047279A JP12047279A JPS5644434A JP S5644434 A JPS5644434 A JP S5644434A JP 12047279 A JP12047279 A JP 12047279A JP 12047279 A JP12047279 A JP 12047279A JP S5644434 A JPS5644434 A JP S5644434A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- control
- sensor
- fuel
- 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.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
PURPOSE: To control a required air-fuel ratio accurately a theoretical air fuel ratio by using a corrected value which is stored in accordance with each operation state when the theoretical air-fuel ratio is placed under feedback control, thereby gaining a precise air-fuel ratio required.
CONSTITUTION: Receiving each output signal of a suction air amount sensor 11, a suction air temperature sensor 12, a water temperature sensor 13, an air-fuel ratio sensor 14, and a rotation speed sensor 15, a control circuit 20 controls each fuel injection valve 5 to perform air-fuel ratio control. Feedback control is performed on the in such a way that an air-fuel ratio approaches a theoretical air-fuel ratio basis of an output of the air fuel-ratio sensor 14 for a certain period in every specific cycle. Each value related to the feedback-controlled ratio is amended and stored in accordance with a driving condition during the feedback processing. In a period except said period, one of said amended values, suitable for the present driving condition is selected and controlled to otbain a required air-fuel ratio shifted from the theoretical air fuel ratio by a preset value.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12047279A JPS5644434A (en) | 1979-09-19 | 1979-09-19 | Control of air-fuel ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12047279A JPS5644434A (en) | 1979-09-19 | 1979-09-19 | Control of air-fuel ratio |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5644434A true JPS5644434A (en) | 1981-04-23 |
JPS6228295B2 JPS6228295B2 (en) | 1987-06-19 |
Family
ID=14787010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12047279A Granted JPS5644434A (en) | 1979-09-19 | 1979-09-19 | Control of air-fuel ratio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5644434A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105530A (en) * | 1980-12-23 | 1982-07-01 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |
JPS5815735A (en) * | 1981-07-20 | 1983-01-29 | Nippon Denso Co Ltd | Control method of air-fuel ratio |
JPS5859321A (en) * | 1981-10-03 | 1983-04-08 | Toyota Motor Corp | Method for controlling air-fuel ratio in internal-combustion engine |
JPS58110838A (en) * | 1981-12-25 | 1983-07-01 | Mitsubishi Motors Corp | Fuel supply device for engine |
JPS58204942A (en) * | 1982-05-24 | 1983-11-29 | Nippon Denso Co Ltd | Control method of air fuel ratio |
JPS59101561A (en) * | 1982-11-30 | 1984-06-12 | Mazda Motor Corp | Air-fuel ratio controller of engine |
JPS62251444A (en) * | 1986-04-24 | 1987-11-02 | Honda Motor Co Ltd | Air-fuel ratio control method for internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5420227A (en) * | 1977-07-15 | 1979-02-15 | Hitachi Ltd | Air-fuel ratio closed loop control device |
-
1979
- 1979-09-19 JP JP12047279A patent/JPS5644434A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5420227A (en) * | 1977-07-15 | 1979-02-15 | Hitachi Ltd | Air-fuel ratio closed loop control device |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105530A (en) * | 1980-12-23 | 1982-07-01 | Toyota Motor Corp | Air-fuel ratio controlling method for internal combustion engine |
JPH0141821B2 (en) * | 1980-12-23 | 1989-09-07 | Toyota Motor Co Ltd | |
JPS5815735A (en) * | 1981-07-20 | 1983-01-29 | Nippon Denso Co Ltd | Control method of air-fuel ratio |
JPH0214534B2 (en) * | 1981-07-20 | 1990-04-09 | Nippon Denso Co | |
JPS5859321A (en) * | 1981-10-03 | 1983-04-08 | Toyota Motor Corp | Method for controlling air-fuel ratio in internal-combustion engine |
JPH0325625B2 (en) * | 1981-10-03 | 1991-04-08 | Toyota Motor Co Ltd | |
JPS58110838A (en) * | 1981-12-25 | 1983-07-01 | Mitsubishi Motors Corp | Fuel supply device for engine |
JPS58204942A (en) * | 1982-05-24 | 1983-11-29 | Nippon Denso Co Ltd | Control method of air fuel ratio |
JPH0437260B2 (en) * | 1982-05-24 | 1992-06-18 | Nippon Denso Co | |
JPS59101561A (en) * | 1982-11-30 | 1984-06-12 | Mazda Motor Corp | Air-fuel ratio controller of engine |
JPH048615B2 (en) * | 1982-11-30 | 1992-02-17 | ||
JPS62251444A (en) * | 1986-04-24 | 1987-11-02 | Honda Motor Co Ltd | Air-fuel ratio control method for internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPS6228295B2 (en) | 1987-06-19 |
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