JPS5525531A - Feedback type air-fuel ratio controlling apparatus - Google Patents
Feedback type air-fuel ratio controlling apparatusInfo
- Publication number
- JPS5525531A JPS5525531A JP9759478A JP9759478A JPS5525531A JP S5525531 A JPS5525531 A JP S5525531A JP 9759478 A JP9759478 A JP 9759478A JP 9759478 A JP9759478 A JP 9759478A JP S5525531 A JPS5525531 A JP S5525531A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- fuel ratio
- exhaust gas
- sensor
- 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 increase the hysteresis of signals and reduce the delay of response by incorporating a backlash circuit into a controlling circuit of the apparatus which controls the air-fuel ratio through the feedback of the signal of an exhaust gas sensor to the intake system.
CONSTITUTION: In the exhaust pipe 13 of an internal combustion engine 10, an exhaust gas sensor 14 for detecting the concentration of exhaust gas and tertiary catalysts 15 are arranged, and the signal of the sensor 14 is feedback-treated to an actuator 19 arranged in an intake pipe 11 through a control circuit 33, and thus air-fuel ratio is set at a theoretical air-fuel ratio. In the control circuit 33, a backlash circuit 50 is incorporated which always keeps the hysteresis of signals constant, and the signal from the sensor 14 is introduced through a stabilizing circuit 40, and the signal 61 on starting is introduced through a compensation circuit 60. The signal from the circuit 50 is supplied to a deviation detector 16 and comparison- operated with a prescribed value, and then supplied to the actuator 19 through a temperature correcting circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9759478A JPS5525531A (en) | 1978-08-10 | 1978-08-10 | Feedback type air-fuel ratio controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9759478A JPS5525531A (en) | 1978-08-10 | 1978-08-10 | Feedback type air-fuel ratio controlling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5525531A true JPS5525531A (en) | 1980-02-23 |
| JPS6153543B2 JPS6153543B2 (en) | 1986-11-18 |
Family
ID=14196553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9759478A Granted JPS5525531A (en) | 1978-08-10 | 1978-08-10 | Feedback type air-fuel ratio controlling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5525531A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193743A (en) * | 1981-05-25 | 1982-11-29 | Mitsubishi Electric Corp | Oxygen sensor receiving device |
| JPS5987241A (en) * | 1982-11-12 | 1984-05-19 | Toyota Motor Corp | Air-fuel ratio control method |
| JPS5987242A (en) * | 1982-11-12 | 1984-05-19 | Toyota Motor Corp | Air-fuel ratio control method |
| JPS59158356A (en) * | 1983-02-28 | 1984-09-07 | Mazda Motor Corp | Air-fuel ratio control device in engine |
-
1978
- 1978-08-10 JP JP9759478A patent/JPS5525531A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193743A (en) * | 1981-05-25 | 1982-11-29 | Mitsubishi Electric Corp | Oxygen sensor receiving device |
| JPS5987241A (en) * | 1982-11-12 | 1984-05-19 | Toyota Motor Corp | Air-fuel ratio control method |
| JPS5987242A (en) * | 1982-11-12 | 1984-05-19 | Toyota Motor Corp | Air-fuel ratio control method |
| JPH052823B2 (en) * | 1982-11-12 | 1993-01-13 | Toyota Motor Co Ltd | |
| JPH0569971B2 (en) * | 1982-11-12 | 1993-10-04 | Toyota Motor Co Ltd | |
| JPS59158356A (en) * | 1983-02-28 | 1984-09-07 | Mazda Motor Corp | Air-fuel ratio control device in engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6153543B2 (en) | 1986-11-18 |
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