JPS55134741A - Controlling device of air-fuel ratio for carburetor - Google Patents
Controlling device of air-fuel ratio for carburetorInfo
- Publication number
- JPS55134741A JPS55134741A JP4356279A JP4356279A JPS55134741A JP S55134741 A JPS55134741 A JP S55134741A JP 4356279 A JP4356279 A JP 4356279A JP 4356279 A JP4356279 A JP 4356279A JP S55134741 A JPS55134741 A JP S55134741A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- exhaust
- controlling
- aimed
- 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 reduce the amount of NOx produced at the time of low-load and high- load operation of an engine by means of air-fuel ratio controlling system in which the amount of bleed-air to carburetor is feedback controlled by use of a signal from an exhaust-gas sensor, by controlling to make mixture richer during the while when the signal from the exhaust-gas sensor indicates that the actual air-fuel ratio is higher than an aimed air-fuel ratio.
CONSTITUTION: An auxiliary air-bleed passage 12 having electromagnetic valve 7 is communicated to main and slow-speed fuel passages of carburetor 6 for controlling the air-fuel ratio. On the other hand, signals from sensor 10 for detecting partial vacuum in the intake pipe, intake pressure sensor 11 and exhaust-gas sensor 3 are afforded to control circuit 9 for controlling the opening of electromagnetic valve 7, so as to attain an optimal efficiency of ternary ctalyst 4 in exhaut pipe 2. In the control circuit 9, the actual air-fuel ratio calculated from the above signals is compared with an aimed air-fuel ratio. The control circuit 9 is operated to make the time change of the integration signal greater (that is, to make the aimed air-fuel ratio smaller) during the while when air-fuel ratio of exhaust gas is greater than the aimed air-fuel ratio. This period corresponds to low- and high-load operation of engine, and the system operates to reduce the amount of NOx produced in this period.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4356279A JPS55134741A (en) | 1979-04-10 | 1979-04-10 | Controlling device of air-fuel ratio for carburetor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4356279A JPS55134741A (en) | 1979-04-10 | 1979-04-10 | Controlling device of air-fuel ratio for carburetor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55134741A true JPS55134741A (en) | 1980-10-20 |
Family
ID=12667177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4356279A Pending JPS55134741A (en) | 1979-04-10 | 1979-04-10 | Controlling device of air-fuel ratio for carburetor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55134741A (en) |
-
1979
- 1979-04-10 JP JP4356279A patent/JPS55134741A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5596350A (en) | Method of controlling internal combustion engine in terms of numerous variables | |
JPS5788250A (en) | Controller for air-fuel ratio of engine | |
JPS53134116A (en) | Fuel feeder for internal combustion engine | |
JPS566053A (en) | Air fuel ratio controller used for engine with reactor | |
JPS5759039A (en) | Working condition display process in internal combustion engine | |
JPS5554658A (en) | Electronic controller for internal-combustion engine | |
JPS5685541A (en) | Controlling device of air-fuel ratio | |
JPS5799253A (en) | Air-fuel ratio control device | |
JPS5746044A (en) | Air fuel ratio controller of internal combustion engine | |
JPS55134741A (en) | Controlling device of air-fuel ratio for carburetor | |
JPS5732043A (en) | Air fuel ratio correcting devive for internal combustion engine | |
JPS5770940A (en) | Air fuel ratio control device | |
JPS5469614A (en) | Secondary air supply controller | |
JPS5746056A (en) | Exhaust gas cleaner of fuel injection type engine | |
JPS5464222A (en) | Exhaust gas recirculation controller | |
JPS5741451A (en) | Exhaust gas purifying apparatus for fuel injection system engine | |
JPS56104144A (en) | Exhasut reflux control | |
JPS5489116A (en) | Air fuel ratio controller of internal combustion engine | |
JPS5457013A (en) | Secondary air supply rate control system | |
JPS57108422A (en) | Controller for flow rate of fuel for engine | |
JPS56135737A (en) | Controlling device for air-fuel ratio | |
JPS5746042A (en) | Air fuel ratio controller of internal combustion engine | |
JPS55134744A (en) | Air-fuel ratio controlling device for multicylinder internal combustion engine | |
JPS54155311A (en) | Exhaust gas controller | |
JPS5464218A (en) | Secondary air controller for internal combustion engine |