JPS5749034A - Controlling device for air-fuel ratio of internal-combustion engine - Google Patents
Controlling device for air-fuel ratio of internal-combustion engineInfo
- Publication number
- JPS5749034A JPS5749034A JP12331980A JP12331980A JPS5749034A JP S5749034 A JPS5749034 A JP S5749034A JP 12331980 A JP12331980 A JP 12331980A JP 12331980 A JP12331980 A JP 12331980A JP S5749034 A JPS5749034 A JP S5749034A
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- fuel ratio
- air
- pneumatic control
- starting time
- 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 secure optimum air-fuel ratio at the starting time, and to improve the performance of an engine at that time, by a method wherein a penumatic control valve is controlled in response to the temperature of a carburettor at the starting time, in a device to which a fresh-air introducing path, provided with a pneumatic control valve and going around a carburettor, is provided.
CONSTITUTION: The air-fuel ratio controlling device is provided with the primary fresh-air introducing path 17 to which a pneumatic control valve 16 of bimetal type is provided, and the secondary fresh-air introducing path 14, going around a carburettor 12, which is provided with a pneumatic control valve 26, and the pneumatic control valve 26 is controlled by a control circuit 18. In this case, the control circuit 18 receives the respective output from an oxygen density sensor 6, provided to an exhaust system, and a temperature sensor 25, provided in a float chamber 22, and controls the pneumatic control valve 26 by the output of a temperature sensor 25, at the starting time of an engine. With such an arrangement, the specific fuel ratio, especially at the starting time in high temperature, is controlled best, as a result, the performance of an engine is maintained in good condition.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12331980A JPS5749034A (en) | 1980-09-05 | 1980-09-05 | Controlling device for air-fuel ratio of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12331980A JPS5749034A (en) | 1980-09-05 | 1980-09-05 | Controlling device for air-fuel ratio of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5749034A true JPS5749034A (en) | 1982-03-20 |
Family
ID=14857605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12331980A Pending JPS5749034A (en) | 1980-09-05 | 1980-09-05 | Controlling device for air-fuel ratio of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5749034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176444A (en) * | 1983-03-25 | 1984-10-05 | Toyota Motor Corp | Method of controlling air-fuel ratio of internal- combustion engine |
| JPS623159A (en) * | 1985-06-28 | 1987-01-09 | Honda Motor Co Ltd | Intake secondary air supply device for internal-combustion engine |
| JPH0516903U (en) * | 1991-08-26 | 1993-03-02 | アルメタツクス株式会社 | balcony |
-
1980
- 1980-09-05 JP JP12331980A patent/JPS5749034A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176444A (en) * | 1983-03-25 | 1984-10-05 | Toyota Motor Corp | Method of controlling air-fuel ratio of internal- combustion engine |
| JPS623159A (en) * | 1985-06-28 | 1987-01-09 | Honda Motor Co Ltd | Intake secondary air supply device for internal-combustion engine |
| JPH0516903U (en) * | 1991-08-26 | 1993-03-02 | アルメタツクス株式会社 | balcony |
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