JPS56159547A - Air to fuel ratio control system for engine - Google Patents
Air to fuel ratio control system for engineInfo
- Publication number
- JPS56159547A JPS56159547A JP6353680A JP6353680A JPS56159547A JP S56159547 A JPS56159547 A JP S56159547A JP 6353680 A JP6353680 A JP 6353680A JP 6353680 A JP6353680 A JP 6353680A JP S56159547 A JPS56159547 A JP S56159547A
- Authority
- JP
- Japan
- Prior art keywords
- air
- engine
- fuel ratio
- actuators
- air bleed
- 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.)
- Granted
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 density of NOx in the exhaust gas of the engine and improve the fuel consumption thereof by a method wherein a feedback control is stopped when the engine is being operated in a low load and a poor mixture having the air to fuel ratio larger than the logical air to fuel ratio is supplied to the engine.
CONSTITUTION: An air bleed conduit 16 is connected to a main fuel nozzle 10 provided in a small venturi 9 and another air bleed conduit 30 is connected to a slow port 25 provided at the vicinity of a throttle valve 7 respectively while proportional actuators 17, 31 are connected to each conduits 16, 30 respectively. These actuators 17, 31 are controlled by a computer 24 in accordance with the output of an exhaust sensor 40 and thereby controlling the amount of air bleed or the air to fuel ratio. Here, the computer 24 increases the opening areas of valve ports 18, 32 for respective actuators 17, 31 to make the mixture thin when the low load operation time excluding an idling operation time is detected by the outputs of negative pressure switches 62, 66 and an idling switch 64.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6353680A JPS56159547A (en) | 1980-05-13 | 1980-05-13 | Air to fuel ratio control system for engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6353680A JPS56159547A (en) | 1980-05-13 | 1980-05-13 | Air to fuel ratio control system for engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56159547A true JPS56159547A (en) | 1981-12-08 |
JPS6148626B2 JPS6148626B2 (en) | 1986-10-24 |
Family
ID=13232029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6353680A Granted JPS56159547A (en) | 1980-05-13 | 1980-05-13 | Air to fuel ratio control system for engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56159547A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6379459U (en) * | 1986-11-14 | 1988-05-25 |
-
1980
- 1980-05-13 JP JP6353680A patent/JPS56159547A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6379459U (en) * | 1986-11-14 | 1988-05-25 |
Also Published As
Publication number | Publication date |
---|---|
JPS6148626B2 (en) | 1986-10-24 |
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