JPS5741444A - Air fuel ratio controlling system for internal combustion engine - Google Patents
Air fuel ratio controlling system for internal combustion engineInfo
- Publication number
- JPS5741444A JPS5741444A JP11748380A JP11748380A JPS5741444A JP S5741444 A JPS5741444 A JP S5741444A JP 11748380 A JP11748380 A JP 11748380A JP 11748380 A JP11748380 A JP 11748380A JP S5741444 A JPS5741444 A JP S5741444A
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- engine
- air fuel
- speed rotation
- combustion engine
- 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 eliminate noise caused by exhaust pulsation and control properly air fuel ratio by smoothing output signals of an oxygen sensor provided in exhaust while rotational speed of an engine is low.
CONSTITUTION: A rotational speed detecting circuit 35 detects low speed rotation of an engine to generate the output signal of the low speed rotation, turns on a switching element 31 and turns off a switching element 32. Thus, the output signal Va of a sensor enters a circuit 33, is smoothed by a resistance R and capacitor C and sent to the input of a comparator 34 as smoothed signal Va' not reaching comparative voltage Vref. Thus, effect of noise caused by exhaust pulsation in the region of low speed rotation of the engine can be eliminated.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11748380A JPS5741444A (en) | 1980-08-26 | 1980-08-26 | Air fuel ratio controlling system for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11748380A JPS5741444A (en) | 1980-08-26 | 1980-08-26 | Air fuel ratio controlling system for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5741444A true JPS5741444A (en) | 1982-03-08 |
Family
ID=14712816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11748380A Pending JPS5741444A (en) | 1980-08-26 | 1980-08-26 | Air fuel ratio controlling system for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5741444A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0641003A (en) * | 1984-05-18 | 1994-02-15 | Shionogi & Co Ltd | Carboxyalkeneamidocephalosporin |
US5666935A (en) * | 1994-10-19 | 1997-09-16 | Sanshin Kogyo Kabushiki Kaisha | Fuel injection control for engine |
-
1980
- 1980-08-26 JP JP11748380A patent/JPS5741444A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0641003A (en) * | 1984-05-18 | 1994-02-15 | Shionogi & Co Ltd | Carboxyalkeneamidocephalosporin |
US5666935A (en) * | 1994-10-19 | 1997-09-16 | Sanshin Kogyo Kabushiki Kaisha | Fuel injection control for engine |
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