JPS5510069A - Air-fuel ratio controlling apparatus - Google Patents
Air-fuel ratio controlling apparatusInfo
- Publication number
- JPS5510069A JPS5510069A JP8334178A JP8334178A JPS5510069A JP S5510069 A JPS5510069 A JP S5510069A JP 8334178 A JP8334178 A JP 8334178A JP 8334178 A JP8334178 A JP 8334178A JP S5510069 A JPS5510069 A JP S5510069A
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- fixed
- level
- comparison
- 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 perform correct control by allowing a comparison circuit means to generate the ratio of the sensor detection signal to a fixed comparison level which corresponds to a fixed air-fuel ratio, when the cycle of repetition between hith and low levels of air-fuel ratio sensor detection signals is above a fixed value.
CONSTITUTION: The detection signal A of an air-fuel ratio sensor 10 which is got rid of high frequendy components and amplified in an amplifying circuit 20 is introduced into a comparison circuit 30, and delayed by a condenser 304, and compared and discriminated by a comparison level comparator 305 at a terminal B where voltage is divided by diodes 301 and 302 and a resistor 303. Namely, at the variation point where the sensor detection signal A is going to vary from high to low level or reversely, whether the air-fuel ratio is above a fixed air-fuel ratio or not can be judged. When the output signal C of the comparison circuit 30 is at high level, feedback control is performed so that the output of an integtarion circuit 40 increases and the air-fuel ratio decreases (rich), and when in low level, feedback control is performed so that air-fuel ratio increases (lean).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8334178A JPS5510069A (en) | 1978-07-07 | 1978-07-07 | Air-fuel ratio controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8334178A JPS5510069A (en) | 1978-07-07 | 1978-07-07 | Air-fuel ratio controlling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5510069A true JPS5510069A (en) | 1980-01-24 |
| JPS6114339B2 JPS6114339B2 (en) | 1986-04-18 |
Family
ID=13799727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8334178A Granted JPS5510069A (en) | 1978-07-07 | 1978-07-07 | Air-fuel ratio controlling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52101048A (en) * | 1977-03-10 | 1977-08-24 | Canon Inc | Screen type light sensitive material |
-
1978
- 1978-07-07 JP JP8334178A patent/JPS5510069A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52101048A (en) * | 1977-03-10 | 1977-08-24 | Canon Inc | Screen type light sensitive material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114339B2 (en) | 1986-04-18 |
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