JPS5749048A - Controlling device for air/fuel ratio in internal combustion engine - Google Patents
Controlling device for air/fuel ratio in internal combustion engineInfo
- Publication number
- JPS5749048A JPS5749048A JP12496980A JP12496980A JPS5749048A JP S5749048 A JPS5749048 A JP S5749048A JP 12496980 A JP12496980 A JP 12496980A JP 12496980 A JP12496980 A JP 12496980A JP S5749048 A JPS5749048 A JP S5749048A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- intake
- engine
- density
- 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 ensure optimum air/fuel ratio correction in accordance with an air density in an internal combustion engine by a method wherein the correction of an engine intake air density is carried out when the engine intake air density is judged smaller due to increase of an intake temperature, increase of a duty cycle of an air/fuel ratio control magnetic valve, and decrease of a barometric pressure.
CONSTITUTION: During operation of an engine, detection signals Ta and Pa of an intake temperature sensor 13 and an atmospheric pressure 14 are inputted a computer 11 to compare with prefixed reference values To and Po, respectively. When neight Ta>To nor Pa<Po are met, a solenoid valve 6 is opened to flow air from an air cleaner 1 through a venturi negative pressure passage 7. On the other hand, when either of the above-mentioned conditions is met, it is judged that the intake air density is small, and the solenoid valve 6 is closed. This stops flow of air from the air cleaner 1 via the venturi negative pressure passage 7, increases the air flow rate to an air intake passage 4, and shifts an air/fuel ratio to lean side.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12496980A JPS5749048A (en) | 1980-09-09 | 1980-09-09 | Controlling device for air/fuel ratio in internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12496980A JPS5749048A (en) | 1980-09-09 | 1980-09-09 | Controlling device for air/fuel ratio in internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5749048A true JPS5749048A (en) | 1982-03-20 |
Family
ID=14898695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12496980A Pending JPS5749048A (en) | 1980-09-09 | 1980-09-09 | Controlling device for air/fuel ratio in internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5749048A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008246532A (en) * | 2007-03-30 | 2008-10-16 | Jfe Steel Kk | Joint hardware for continuous casting of different steel kinds, and continuous steel casting method |
-
1980
- 1980-09-09 JP JP12496980A patent/JPS5749048A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008246532A (en) * | 2007-03-30 | 2008-10-16 | Jfe Steel Kk | Joint hardware for continuous casting of different steel kinds, and continuous steel casting method |
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