JPS54129225A - Air-fuel-ratio controller - Google Patents
Air-fuel-ratio controllerInfo
- Publication number
- JPS54129225A JPS54129225A JP3561178A JP3561178A JPS54129225A JP S54129225 A JPS54129225 A JP S54129225A JP 3561178 A JP3561178 A JP 3561178A JP 3561178 A JP3561178 A JP 3561178A JP S54129225 A JPS54129225 A JP S54129225A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- circuit
- ratio
- value
- 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 imporve the performance by adding a bias current control circuit and a monitor circuit.
CONSTITUTION: A current control circuit 2 which controls bias current supplied for an air-fuel-ratio sensor 1 and a monitor circuit 6 which monitors whether temperature of engine exhaust gas rises over a value to activate or not are incorporated. The resistance of the air-fuel-sensor 1 varying with temperatures can be corrected, which eliminates the need of varying the set level of the comparison circuit 3 according to temperatures. When the temperature of exhaust gas increases below a value to activate, the output of the monitor circuit 6 at H level makes an integration stop circuit 7 operate to stop an integration circuit 4. With its output kept at a specified value, an air-fuel-ratio controller 5 makes no feedback control of air-fuel- ratio so that improper air-fuel-ratio may be checked.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3561178A JPS54129225A (en) | 1978-03-28 | 1978-03-28 | Air-fuel-ratio controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3561178A JPS54129225A (en) | 1978-03-28 | 1978-03-28 | Air-fuel-ratio controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54129225A true JPS54129225A (en) | 1979-10-06 |
Family
ID=12446627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3561178A Pending JPS54129225A (en) | 1978-03-28 | 1978-03-28 | Air-fuel-ratio controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54129225A (en) |
-
1978
- 1978-03-28 JP JP3561178A patent/JPS54129225A/en active Pending
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