JPS5546015A - Carburettor - Google Patents
CarburettorInfo
- Publication number
- JPS5546015A JPS5546015A JP11771478A JP11771478A JPS5546015A JP S5546015 A JPS5546015 A JP S5546015A JP 11771478 A JP11771478 A JP 11771478A JP 11771478 A JP11771478 A JP 11771478A JP S5546015 A JPS5546015 A JP S5546015A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- negative pressure
- engine
- air
- decreased
- 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)
Abstract
PURPOSE: To enable fuel air ratio of an engine to be compensated for in accordance with accelerating conditions thereof by constituting a carburettor therefor such that fuel for compensating for fuel air ratio of the engine is sucked into a suction bore in accordance with the duration for and the degree to which fuel air mixture is held lean during acceleration of the engine and at the same time fuel of the main fuel circuit is caused to be easily sucked out thereform.
CONSTITUTION: If a throttle valve 6 is opened, for example, to a B position in order to accelerate an engine from its stationary state, suction negative pressure acting at a negative pressure extracting port 28A is decreased. This change of negative pressure is transmitted to chambers 20 and 21 of a negative pressure responsive valve I through negative pressure conduits 28 and 30, respectively, whereupon negative pressure is decreased instantaneously in the chamber 20 while negative pressure is grandually decreased in the chamber 21 due to the existence of a throttle 29 so that a diaphragm 19 is moved downwardly against the urging of a spring 23. As a result, a needle valve 22 is moved downwardly to reduce an opening area of an air bleeding hole 15. Accordingly, in an accelerating fuel supply passage 12, the ratio of fuel relative to air from the air bleeding holes 14, 15 is increased so that fuel air mixture in the accelerating fuel supply passage 12 becomes rich. Such rich mixrture is then sucked out from ports 11 and 9 into a suction bore 2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11771478A JPS5546015A (en) | 1978-09-25 | 1978-09-25 | Carburettor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11771478A JPS5546015A (en) | 1978-09-25 | 1978-09-25 | Carburettor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5546015A true JPS5546015A (en) | 1980-03-31 |
Family
ID=14718475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11771478A Pending JPS5546015A (en) | 1978-09-25 | 1978-09-25 | Carburettor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5546015A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726245A (en) * | 1980-07-25 | 1982-02-12 | Aisan Ind Co Ltd | Carburetor with accelerating air fuel ratio compensator |
| US4372896A (en) * | 1979-06-08 | 1983-02-08 | Weber S.P.A. | Device adapted to correct the air-fuel ratio of the mixture delivered by a carburetor during the periods of operation at low loads of a motor vehicle engine |
| US4450117A (en) * | 1981-12-21 | 1984-05-22 | Toyota Jidosha Kabushiki Kaisha | Variable venturi-type carburetor |
-
1978
- 1978-09-25 JP JP11771478A patent/JPS5546015A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4372896A (en) * | 1979-06-08 | 1983-02-08 | Weber S.P.A. | Device adapted to correct the air-fuel ratio of the mixture delivered by a carburetor during the periods of operation at low loads of a motor vehicle engine |
| JPS5726245A (en) * | 1980-07-25 | 1982-02-12 | Aisan Ind Co Ltd | Carburetor with accelerating air fuel ratio compensator |
| US4450117A (en) * | 1981-12-21 | 1984-05-22 | Toyota Jidosha Kabushiki Kaisha | Variable venturi-type carburetor |
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