JPS56107930A - Method of feedback control of air-fuel ratio - Google Patents
Method of feedback control of air-fuel ratioInfo
- Publication number
- JPS56107930A JPS56107930A JP17640280A JP17640280A JPS56107930A JP S56107930 A JPS56107930 A JP S56107930A JP 17640280 A JP17640280 A JP 17640280A JP 17640280 A JP17640280 A JP 17640280A JP S56107930 A JPS56107930 A JP S56107930A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- fuel
- circuit
- subtraction
- 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 enable accurate control of air-fuel ratio, by judging whether the air- fuel ratio is large or small and by effecting addition and subtraction in accordance with a set sampling signal to stabilize the air fuel ratio at a predetermined level.
CONSTITUTION: It is judged through an oxygen concentration detector 1 and an air fuel ratio discrimination circuit 2 whether the ratio of air to fuel is larger or smaller than a set level. Addition and subtraction are effected by a reversible ciunter 5 in accordance with a set sampling signal to stabilize the air-fuel ratio at a predetermined level. If the running condition of an engine goes as shown by a point P1, it is discriminated through the detector 1 and the circuit 2 that the fuel mixture is too thick. In that case, a discrimination signal indicating that the air-fuel ratio is smaller than the set level is generated. The reversilble counter 5 having stored the state up to the present is subtracted by the number of sampling signals which have entered into the counter 5 until the output discrimination signal of the circuit 2 is inverted. Since operation is repeated until the predetermined air-fuel ratio is reached.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17640280A JPS56107930A (en) | 1980-12-12 | 1980-12-12 | Method of feedback control of air-fuel ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17640280A JPS56107930A (en) | 1980-12-12 | 1980-12-12 | Method of feedback control of air-fuel ratio |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP47104799A Division JPS5119534B2 (en) | 1972-10-17 | 1972-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56107930A true JPS56107930A (en) | 1981-08-27 |
Family
ID=16013039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17640280A Pending JPS56107930A (en) | 1980-12-12 | 1980-12-12 | Method of feedback control of air-fuel ratio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56107930A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956033A (en) * | 1972-06-02 | 1974-05-30 | ||
JPS4963830A (en) * | 1972-10-19 | 1974-06-20 |
-
1980
- 1980-12-12 JP JP17640280A patent/JPS56107930A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956033A (en) * | 1972-06-02 | 1974-05-30 | ||
JPS4963830A (en) * | 1972-10-19 | 1974-06-20 |
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