JPS57183545A - Fuel saving device of carburetor for internal combustion engine - Google Patents
Fuel saving device of carburetor for internal combustion engineInfo
- Publication number
- JPS57183545A JPS57183545A JP6812281A JP6812281A JPS57183545A JP S57183545 A JPS57183545 A JP S57183545A JP 6812281 A JP6812281 A JP 6812281A JP 6812281 A JP6812281 A JP 6812281A JP S57183545 A JPS57183545 A JP S57183545A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- negative pressure
- rear side
- selector
- chamber
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M3/00—Idling devices for carburettors
- F02M3/02—Preventing flow of idling fuel
- F02M3/04—Preventing flow of idling fuel under conditions where engine is driven instead of driving, e.g. driven by vehicle running down hill
- F02M3/042—Fuel cut-off by altering the pressure in the float chamber; Arrangement of pneumatic accumulators for pressure equalization
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
PURPOSE:To cut off fuel in a carburetor at decleration, by communicating two of the selector ports in a negative pressure selector valve to the atmosphere and the rear side of a throttle valve while communicating the rest of the selector ports to the upper end of a float chamber and communicating a negative pressure chamber, housed with the negative pressure selector valve, to the rear side of the throttle valve. CONSTITUTION:Two selector ports 10a, 10b in a negative pressure selector valve 7 are communicated respectively to the atmosphere and the rear side of a throttle valve 6, while another pat 11 is communicated to the upper end of a float chamber 4, further a negative pressure chamber 8 is communicated to the rear side of the throttle valve 6. The valve 7 is located normally in a lower position, and the chamer 4 is communicated to the atmosphere permitting the flow of fuel from a nozzle 5, if the valve 6 is closed at deceleration, negative pressure in the rear side of the valve 6 is guided to the negative pressure chamber 8, and the valve 7 is sucked upward. In consequence, a communication hole 9 is connected to the upper side port 10b, and pressure in the chamber 4 is equalized to pressure in the rear side of the valve 6, then fuel is caused not to flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6812281A JPS57183545A (en) | 1981-05-08 | 1981-05-08 | Fuel saving device of carburetor for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6812281A JPS57183545A (en) | 1981-05-08 | 1981-05-08 | Fuel saving device of carburetor for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57183545A true JPS57183545A (en) | 1982-11-11 |
Family
ID=13364620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6812281A Pending JPS57183545A (en) | 1981-05-08 | 1981-05-08 | Fuel saving device of carburetor for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57183545A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4512243Y1 (en) * | 1966-06-06 | 1970-05-29 |
-
1981
- 1981-05-08 JP JP6812281A patent/JPS57183545A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4512243Y1 (en) * | 1966-06-06 | 1970-05-29 |
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