JPS5634941A - Air-fuel ratio control system - Google Patents
Air-fuel ratio control systemInfo
- Publication number
- JPS5634941A JPS5634941A JP9885179A JP9885179A JPS5634941A JP S5634941 A JPS5634941 A JP S5634941A JP 9885179 A JP9885179 A JP 9885179A JP 9885179 A JP9885179 A JP 9885179A JP S5634941 A JPS5634941 A JP S5634941A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- sensor
- air
- fuel ratio
- 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
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE: To achieve theoretical air-fuel ratio faster in the transition period of an engine opeation by making the cycle of an air-fuel ratio control more frequent on the basis of signals from an O2 sensor and throttle sensor in an exhaust system.
CONSTITUTION: Each signal of an O2 sensor 19 and throttle sensor 20 is transmitted to a controller 21 so as to control solenoid valves 14, 15 which act to vary the air breed of a carburetter. The signal of the O2 sensor 19 is compared in a comparator circuit 31 through an amplifying circuit 22, into which circuit 23 a slice level is also input, and furthermore added in an addition circuit 28 via an integration circuit 25 and center valve detector 26. The signal of a throttle sensor 20 is addd in the addition circuit 28 by detecting an acceleration or deceleration state and a signal transmitted from a cycle modulation circuit 29 in accordance with a change during the transition period is superposed in a superposition circuit 30, and a preset signal has non been determined. During such an operation, the generation cycle of output signals from the comparator circuit 31 is made shorter and the control is performed earlier.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9885179A JPS5634941A (en) | 1979-08-02 | 1979-08-02 | Air-fuel ratio control system |
| GB8025002A GB2056723B (en) | 1979-08-02 | 1980-07-31 | Automatic control of air/fuel ratio in ic engines |
| US06/174,377 US4356797A (en) | 1979-08-02 | 1980-08-01 | System for controlling air-fuel ratio |
| DE3029325A DE3029325C2 (en) | 1979-08-02 | 1980-08-01 | Arrangement for regulating the fuel-air ratio of a carburetor of an internal combustion engine |
| FR8017159A FR2463282B1 (en) | 1979-08-02 | 1980-08-04 | AIR-FUEL RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE CARBURETOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9885179A JPS5634941A (en) | 1979-08-02 | 1979-08-02 | Air-fuel ratio control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5634941A true JPS5634941A (en) | 1981-04-07 |
| JPS6254991B2 JPS6254991B2 (en) | 1987-11-17 |
Family
ID=14230728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9885179A Granted JPS5634941A (en) | 1979-08-02 | 1979-08-02 | Air-fuel ratio control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5634941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315639A (en) * | 1988-06-16 | 1989-12-20 | Toyota Motor Corp | Air-fuel ratio controller of two-cycle internal combustion engine |
| JPH02211350A (en) * | 1989-02-09 | 1990-08-22 | Mitsubishi Motors Corp | Air-fuel ratio control device for internal combustion engines |
-
1979
- 1979-08-02 JP JP9885179A patent/JPS5634941A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01315639A (en) * | 1988-06-16 | 1989-12-20 | Toyota Motor Corp | Air-fuel ratio controller of two-cycle internal combustion engine |
| JPH02211350A (en) * | 1989-02-09 | 1990-08-22 | Mitsubishi Motors Corp | Air-fuel ratio control device for internal combustion engines |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6254991B2 (en) | 1987-11-17 |
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