JPS5749049A - Air/fuel ratio compensation device in variable venturi carburetor - Google Patents
Air/fuel ratio compensation device in variable venturi carburetorInfo
- Publication number
- JPS5749049A JPS5749049A JP12503680A JP12503680A JPS5749049A JP S5749049 A JPS5749049 A JP S5749049A JP 12503680 A JP12503680 A JP 12503680A JP 12503680 A JP12503680 A JP 12503680A JP S5749049 A JPS5749049 A JP S5749049A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- passage
- throttle valve
- fuel
- air
- 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 stabilize the air/fuel ratio over a wide range from warm-up operation to a high temperature state by controlling an amount of fuel led to a fuel level gauge section of a variable venturi carburetor in accordance with an engine temperature and the value of an air/fuel ratio.
CONSTITUTION: A float chamber 1 is communicated with a chamber 4 via a variable throttle valve 12, and chamber 4 is isolated from a pressure control chamber 5 by means of a diaphragm 6. A fuel passage 7 is installed in communication with chamber 4, and the far end of passage 7 is opened to a venturi section 11 through a fuel level gauge section 8 constituted in combination with a needle 13a actuated by a suction piston 13. Further, the pressure control chamber 5 is communicated via a passage 9a and a variable throttle valve 9 with the upstream location of venturi section 11, and also communicated with venturi section 11 via a passage 10a and a fixed throttle valve 10. Variable throttle valve 9 is controlled via a control circuit 106 with outputs of an O2 sensor and the engine temperature sensor installed in an exhaust system.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12503680A JPS5749049A (en) | 1980-09-09 | 1980-09-09 | Air/fuel ratio compensation device in variable venturi carburetor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12503680A JPS5749049A (en) | 1980-09-09 | 1980-09-09 | Air/fuel ratio compensation device in variable venturi carburetor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5749049A true JPS5749049A (en) | 1982-03-20 |
Family
ID=14900251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12503680A Pending JPS5749049A (en) | 1980-09-09 | 1980-09-09 | Air/fuel ratio compensation device in variable venturi carburetor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5749049A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207266A (en) * | 1992-01-03 | 1993-05-04 | Chuetsu Metal Works Co., Ltd. | Water-cooled copper casting mold |
-
1980
- 1980-09-09 JP JP12503680A patent/JPS5749049A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207266A (en) * | 1992-01-03 | 1993-05-04 | Chuetsu Metal Works Co., Ltd. | Water-cooled copper casting mold |
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