JPS57124054A - Air-fuel ratio control device for internal combustion engine - Google Patents
Air-fuel ratio control device for internal combustion engineInfo
- Publication number
- JPS57124054A JPS57124054A JP994481A JP994481A JPS57124054A JP S57124054 A JPS57124054 A JP S57124054A JP 994481 A JP994481 A JP 994481A JP 994481 A JP994481 A JP 994481A JP S57124054 A JPS57124054 A JP S57124054A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- air
- fuel ratio
- reference level
- control device
- 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 prevent an engine from the disorder caused by improper air-fuel ratio by maintaining an air-fuel ratio control means for a fixed time on the basis of an AND output of a signal obtained by comparing an air-fuel ratio with a theoretical one and a signal issued when the control amount of the said control means reaches to a reference level.
CONSTITUTION: When an electromagnetic control valve 5 is disordered by freezing or the like, since correcting air cannot be sucked into a suction pipe 14, a base air-fuel ratio is not changed. But, electronic control device 18 increases the signal output to the electromagnetic control device 5 for obtaining a required theoretical air-fuel ratio on the basis of a control signal provided with a wave form of an integration constant. When the control amount reaches to a reference level, a signal is outputted from a reference level comparator 15. When an AND input of this signal and a signal from a comparator 7 is given to a hold signal generator 17, the electromagnetic control valve 5 is decided to be fixed by freezing or the like, and the control signal to be outputted to the electromagnetic control valve 5 is maintained at the reference level.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP994481A JPS57124054A (en) | 1981-01-26 | 1981-01-26 | Air-fuel ratio control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP994481A JPS57124054A (en) | 1981-01-26 | 1981-01-26 | Air-fuel ratio control device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57124054A true JPS57124054A (en) | 1982-08-02 |
Family
ID=11734097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP994481A Pending JPS57124054A (en) | 1981-01-26 | 1981-01-26 | Air-fuel ratio control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57124054A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539923A (en) * | 1976-07-15 | 1978-01-28 | Nippon Denso Co Ltd | Air fuel ratio feed back controller |
| JPS54108126A (en) * | 1978-02-13 | 1979-08-24 | Automob Antipollut & Saf Res Center | Air fuel ratio controller |
-
1981
- 1981-01-26 JP JP994481A patent/JPS57124054A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539923A (en) * | 1976-07-15 | 1978-01-28 | Nippon Denso Co Ltd | Air fuel ratio feed back controller |
| JPS54108126A (en) * | 1978-02-13 | 1979-08-24 | Automob Antipollut & Saf Res Center | Air fuel ratio controller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS53141831A (en) | Electronic control system fuel jet type internal combustion engine | |
| JPS53134116A (en) | Fuel feeder for internal combustion engine | |
| JPS5430319A (en) | Electronic control internal combustion engine | |
| JPS53109019A (en) | Air-fuel ratio control device for internal combustion engine | |
| JPS53136129A (en) | Fuel supply equipment of internal combustion engine | |
| JPS51136042A (en) | Internal combustion engine nocking automatic pursuit device | |
| JPS566033A (en) | Electronically controlled fuel injection system for internal combustion engine | |
| JPS52115917A (en) | Intake method and intake system device for internal combustion engine | |
| JPS57124054A (en) | Air-fuel ratio control device for internal combustion engine | |
| JPS55161933A (en) | Fuel-air ratio feedback control for internal combustion engine | |
| JPS53140420A (en) | Engine combustion controller for automobile | |
| JPS5285633A (en) | Internal combustion engine | |
| JPS5359110A (en) | Suction device of internal combustion engine | |
| JPS57124053A (en) | Air-fuel ratio control device for internal combustion engine | |
| JPS5322926A (en) | Air-fuel ratio interpolation apparatus for internal combustio n engine | |
| JPS5218535A (en) | Electronically controlled fuel injection system of internal combustin engine | |
| JPS526830A (en) | Fuel injection device for an internal combustion engine | |
| JPS53104030A (en) | Fuel control system in internal combustion engine | |
| JPS53148621A (en) | Fuel injector for internal combustion engine | |
| JPS52131037A (en) | Air-fuel ratio control device | |
| JPS5240216A (en) | Evaporated fuel controller of an internal combustion engine | |
| JPS569634A (en) | Feedback control of air-fuel ratio | |
| JPS541723A (en) | Fuel injection device of internal combuston engine | |
| JPS5365530A (en) | Fuel injector for internal combustion engine | |
| JPS5348125A (en) | Electronic control fuel injector |