JPS5578147A - Air/fuel ratio control device for internal combustion engine - Google Patents
Air/fuel ratio control device for internal combustion engineInfo
- Publication number
- JPS5578147A JPS5578147A JP15199478A JP15199478A JPS5578147A JP S5578147 A JPS5578147 A JP S5578147A JP 15199478 A JP15199478 A JP 15199478A JP 15199478 A JP15199478 A JP 15199478A JP S5578147 A JPS5578147 A JP S5578147A
- Authority
- JP
- Japan
- Prior art keywords
- air
- switching valve
- detector
- solenoid
- negative pressure
- 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
Abstract
PURPOSE: To improve connection at the time of gear change and accomplish smooth and safe operation by the structure wherein a switching valve which can be connected to the atmosphere is provided in a path connecting the negative pressure chamber of an auxiliary air supply valve and a suction manifold, and an air/fuel ratio detector is provided inside an exhaust pipe.
CONSTITUTION: Oxygen concentration detector 8 is placed inside exhaust pipe 7 and its output side is connected to one input of comparator 22. The output side of comparator 22 is connected to the solenoid of electromagnetic switching valve 21 via amplifier 24. When the output voltage of detector 8 is lower than reference voltage 23, the solenoid of switching valve 21 is deenergized, and negative pressure chamber 11 of auxiliary air supply control valve device 9 is connected to the inside of suction manifold 2. On the other hand, when the output voltage of detector 8 is higher than reference voltage 23, the solenoid of switching valve 21 is energized, and negative pressure chamber 11 is connected to the atmosphere. By this, the supply of supplementary air to suction manifold 2 is prevented while a high concentration air-fuel mixture is being supplied.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15199478A JPS5578147A (en) | 1978-12-11 | 1978-12-11 | Air/fuel ratio control device for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15199478A JPS5578147A (en) | 1978-12-11 | 1978-12-11 | Air/fuel ratio control device for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5578147A true JPS5578147A (en) | 1980-06-12 |
Family
ID=15530729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15199478A Pending JPS5578147A (en) | 1978-12-11 | 1978-12-11 | Air/fuel ratio control device for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5578147A (en) |
-
1978
- 1978-12-11 JP JP15199478A patent/JPS5578147A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5749052A (en) | Purifying device of exhaust gas in fuel injection type engine | |
JPS5788250A (en) | Controller for air-fuel ratio of engine | |
JPS5440922A (en) | Air fuel ratio control equipment of internal combustion engine | |
JPS5578147A (en) | Air/fuel ratio control device for internal combustion engine | |
JPS5634935A (en) | Exhaust gas purifier for engine | |
JPS56115841A (en) | Exhaust gas recirculating device | |
JPS5535106A (en) | Exhaust recirculating apparatus of engine | |
JPS5469614A (en) | Secondary air supply controller | |
JPS56138431A (en) | Fuel feed device to engine | |
JPS5535161A (en) | Exhaust gas return device for engine | |
JPS5332233A (en) | Exhaust gas re-circulation control means for electronically controlled fuel injection engine | |
JPS54101020A (en) | Air-fuel ratio feed back control equipment of lpg engine | |
JPS5660813A (en) | Control method of air-fuel ratio | |
JPS5481420A (en) | Exhaust gas purifying equipment for internal combustion engine | |
JPS55104557A (en) | Carburetor | |
JPS5654950A (en) | Control device for recirculation amount of exhaust gas in engine | |
JPS54111003A (en) | Engine acceleration detector | |
JPS5669452A (en) | Controller for exhaust gas recirculation amount in engine | |
JPS5741451A (en) | Exhaust gas purifying apparatus for fuel injection system engine | |
JPS54155311A (en) | Exhaust gas controller | |
JPS56101050A (en) | Exhaust gas recirculating device for diesel engine | |
JPS5529032A (en) | Exhaust gas recirculation controller for engine | |
JPS5749037A (en) | Controlling device for air-fuel ratio of internal-combustion engine | |
JPS57165654A (en) | Control method and device of exhaust gas recirculation in diesel engine | |
JPS54118920A (en) | Exhaust gas recirculating device for diesel engine |