JPS5634942A - Air-fuel ratio control system - Google Patents
Air-fuel ratio control systemInfo
- Publication number
- JPS5634942A JPS5634942A JP9885279A JP9885279A JPS5634942A JP S5634942 A JPS5634942 A JP S5634942A JP 9885279 A JP9885279 A JP 9885279A JP 9885279 A JP9885279 A JP 9885279A JP S5634942 A JPS5634942 A JP S5634942A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- sensor
- signal
- 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.)
- Pending
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 operation 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 control circuit 21 so as to control solenoid valves 14, 15 which act to vary carburetter air breed. The signal of an O2 sensor 19 is transmitted through an amplifying circuit 22, comparator circuit 31, integration circuit 25 and a center valve detection circuit 26 and its center valve is input to an addition circuit 28. The signal of the throttle sensor 20 is input to a superposition circuit 30 via an acceleration or deceleration detection circuit 27 and cycle modulation circuit 29 to send information on the state of acceleration or deceleration to the superpositin circuit 30, whereby operating the state in a transition period. The so-obtained signal is compared with a reference signal from a triangle wave producing circuit 32, and transmitted into the control circuit 21. Such a transition state is alway predicted beforehand by the control circuit 21.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9885279A JPS5634942A (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 |
---|---|---|---|
JP9885279A JPS5634942A (en) | 1979-08-02 | 1979-08-02 | Air-fuel ratio control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5634942A true JPS5634942A (en) | 1981-04-07 |
Family
ID=14230754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9885279A Pending JPS5634942A (en) | 1979-08-02 | 1979-08-02 | Air-fuel ratio control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634942A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03111647A (en) * | 1989-09-25 | 1991-05-13 | Mitsubishi Motors Corp | Exhaust gas purifier |
-
1979
- 1979-08-02 JP JP9885279A patent/JPS5634942A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03111647A (en) * | 1989-09-25 | 1991-05-13 | Mitsubishi Motors Corp | Exhaust gas purifier |
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