JPS55151133A - Air-fuel ratio feedback control system for internal combustion engine - Google Patents
Air-fuel ratio feedback control system for internal combustion engineInfo
- Publication number
- JPS55151133A JPS55151133A JP5867879A JP5867879A JPS55151133A JP S55151133 A JPS55151133 A JP S55151133A JP 5867879 A JP5867879 A JP 5867879A JP 5867879 A JP5867879 A JP 5867879A JP S55151133 A JPS55151133 A JP S55151133A
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- control unit
- detecting
- engine
- fuel
- 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 simplify the structure of control unit, by employing an arrangement for means for detecting the operational condition of λ sensor for detecting the components of exhaust gas, in which starter signal of engine and other items are compared with respective reference values preset in a control unit.
CONSTITUTION: Signals from water-temperature sensor 5, crank angle sensor 6 and sensor 3 for detecting the air flow rate in intake pipe 2 connected to combustion chamber 1 are afforded to control unit 4. The control unit 4 calculates the quantity of fuel to be injected and causes injection of fuel from fuel injection valve 7. Further, output of λ sensor 9 for detecting the components of exhaust gas in exhaust pipe 8 is also afforded to control unit 4 for correcting the fuel injection rate. Here, in order to detect the operational condition of the λ sensor 9, at least four items out of starter signal of engine, temperature of cooling water, time after starting of engine, engine speed, quantity of intake air, output voltage of λ sensor 9 and vehicle speed are compared with respective reference values preset in control unit 4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5867879A JPS55151133A (en) | 1979-05-15 | 1979-05-15 | Air-fuel ratio feedback control system for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5867879A JPS55151133A (en) | 1979-05-15 | 1979-05-15 | Air-fuel ratio feedback control system for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151133A true JPS55151133A (en) | 1980-11-25 |
Family
ID=13091221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5867879A Pending JPS55151133A (en) | 1979-05-15 | 1979-05-15 | Air-fuel ratio feedback control system for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151133A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5770932A (en) * | 1980-10-07 | 1982-05-01 | Honda Motor Co Ltd | Warming-up detector for air fuel ratio controller of internal combustion engine |
JPS60145435A (en) * | 1984-01-09 | 1985-07-31 | Fujitsu Ten Ltd | Air-fuel ratio control system for internal-combustion engine |
JPS60247025A (en) * | 1984-05-21 | 1985-12-06 | Japan Electronic Control Syst Co Ltd | Learning control device for rotational speed of internal-combustion engine |
EP0616120A1 (en) * | 1993-03-18 | 1994-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with lambda control and control valve therefor |
US5561332A (en) * | 1994-06-10 | 1996-10-01 | Nissan Motor Co., Ltd. | Vehicle anti-theft device having back-up means should the ECU fail, but preventing theft if the ECU was intentionally damaged |
US5646456A (en) * | 1993-12-27 | 1997-07-08 | Nissan Motor Co., Ltd. | Anti-theft car protection system |
-
1979
- 1979-05-15 JP JP5867879A patent/JPS55151133A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5770932A (en) * | 1980-10-07 | 1982-05-01 | Honda Motor Co Ltd | Warming-up detector for air fuel ratio controller of internal combustion engine |
JPS6151651B2 (en) * | 1980-10-07 | 1986-11-10 | Honda Motor Co Ltd | |
JPS60145435A (en) * | 1984-01-09 | 1985-07-31 | Fujitsu Ten Ltd | Air-fuel ratio control system for internal-combustion engine |
JPH0225020B2 (en) * | 1984-01-09 | 1990-05-31 | Fujitsu Ten Ltd | |
JPS60247025A (en) * | 1984-05-21 | 1985-12-06 | Japan Electronic Control Syst Co Ltd | Learning control device for rotational speed of internal-combustion engine |
JPH0219296B2 (en) * | 1984-05-21 | 1990-05-01 | Japan Electronic Control Syst | |
EP0616120A1 (en) * | 1993-03-18 | 1994-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with lambda control and control valve therefor |
US5646456A (en) * | 1993-12-27 | 1997-07-08 | Nissan Motor Co., Ltd. | Anti-theft car protection system |
US5561332A (en) * | 1994-06-10 | 1996-10-01 | Nissan Motor Co., Ltd. | Vehicle anti-theft device having back-up means should the ECU fail, but preventing theft if the ECU was intentionally damaged |
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