JPS57105532A - Air-fuel ratio controlling method - Google Patents
Air-fuel ratio controlling methodInfo
- Publication number
- JPS57105532A JPS57105532A JP18188680A JP18188680A JPS57105532A JP S57105532 A JPS57105532 A JP S57105532A JP 18188680 A JP18188680 A JP 18188680A JP 18188680 A JP18188680 A JP 18188680A JP S57105532 A JPS57105532 A JP S57105532A
- Authority
- JP
- Japan
- Prior art keywords
- augmenter
- air
- fuel ratio
- ram
- stored
- 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
Abstract
PURPOSE: To enable to control the air-fuel ratio to an aimed value with high responsiveness even at the time of transient period of engine operation, by effecting feedback control of the air-fuel ratio by use of an integrated augmenter of the output of an air-fuel ratio sensor and an augmenter of engine conditions calculated on the basis of the former augmenter.
CONSTITUTION: At a step 1004, digital values relating to the temperature of cooling water and that of intake air are read. At a step 1005, an augmenter K1 is calculated from the digital values read at the step 1004, and the result is stored in a RAM. At a step 1006, an output signal of an air-fuel ratio sensor is put thereinto for increasing or decreasing an augmenter K2 as a function of time passed in a timer, and the augementer K2, i.e., information obtained through integration is stored in the RAM. Further, at a step 1007, an augmenter K3 for engine conditions is calculated from engine sparameters and stored in the RAM. On the basis of the signals thus obtained, a fuel injection rate is set in a counter at a step 1016.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18188680A JPS57105532A (en) | 1980-12-24 | 1980-12-24 | Air-fuel ratio controlling method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18188680A JPS57105532A (en) | 1980-12-24 | 1980-12-24 | Air-fuel ratio controlling method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57105532A true JPS57105532A (en) | 1982-07-01 |
JPS6360217B2 JPS6360217B2 (en) | 1988-11-22 |
Family
ID=16108588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18188680A Granted JPS57105532A (en) | 1980-12-24 | 1980-12-24 | Air-fuel ratio controlling method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57105532A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60153446A (en) * | 1984-01-24 | 1985-08-12 | Japan Electronic Control Syst Co Ltd | Learning controller for air-fuel ratio in electronically- controlled fuel injection type internal-combustion engine |
JPS60153445A (en) * | 1984-01-24 | 1985-08-12 | Japan Electronic Control Syst Co Ltd | Learning controller for air-fuel ratio in electronically- controlled fuel injection type internal-combustion engine |
JPS61101644A (en) * | 1984-10-22 | 1986-05-20 | Fuji Heavy Ind Ltd | Air-fuel ratio controlling apparatus |
JPS63183450U (en) * | 1987-05-19 | 1988-11-25 |
-
1980
- 1980-12-24 JP JP18188680A patent/JPS57105532A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60153446A (en) * | 1984-01-24 | 1985-08-12 | Japan Electronic Control Syst Co Ltd | Learning controller for air-fuel ratio in electronically- controlled fuel injection type internal-combustion engine |
JPS60153445A (en) * | 1984-01-24 | 1985-08-12 | Japan Electronic Control Syst Co Ltd | Learning controller for air-fuel ratio in electronically- controlled fuel injection type internal-combustion engine |
JPH0226696B2 (en) * | 1984-01-24 | 1990-06-12 | Japan Electronic Control Syst | |
JPH0226695B2 (en) * | 1984-01-24 | 1990-06-12 | Japan Electronic Control Syst | |
JPS61101644A (en) * | 1984-10-22 | 1986-05-20 | Fuji Heavy Ind Ltd | Air-fuel ratio controlling apparatus |
JPS63183450U (en) * | 1987-05-19 | 1988-11-25 |
Also Published As
Publication number | Publication date |
---|---|
JPS6360217B2 (en) | 1988-11-22 |
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