JPS5554654A - Variable venturi carburetor - Google Patents
Variable venturi carburetorInfo
- Publication number
- JPS5554654A JPS5554654A JP12885378A JP12885378A JPS5554654A JP S5554654 A JPS5554654 A JP S5554654A JP 12885378 A JP12885378 A JP 12885378A JP 12885378 A JP12885378 A JP 12885378A JP S5554654 A JPS5554654 A JP S5554654A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- amount
- air
- negative
- opening
- 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 smoothen the process from starting to warming-up by providing a piston for opening and closing bypass lines according to suction negative-pressure and enabling simultaneous control of both mixture air amount and fuel-air ratio.
CONSTITUTION: There are provided bypass lines 15 and 16 for short-circuting the upstream side of a throttle valve 1 to the downstream side, a piston 18 for opening and closing the lines 15 and 16, and a temperature-sensitive element 19 such as a wax pellet for limiting the displacement of the piston 18 toward the line-opening position according to the engine temperature. A valve mechanism for contrarily increasing or decreasing the amount of diluting air for the line negative-pressure introduced into a negative-pressure drive gear such as a diaphragm device 2 and the amount of air introduced into a fuel according to the displacement of the piston 18, is constituted of orifices 27 and 28 and a pair of grooves 25 and 26 formed in the outer peripheral surface of the piston 18. Thus, in cold starting, the opening of lines 15 and 16 and the amount of negative-pressure diluting air can be relatively increased while the amount of air introduced into the fuel can be decreased, strengthening the mixture gas.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12885378A JPS5554654A (en) | 1978-10-19 | 1978-10-19 | Variable venturi carburetor |
GB7934876A GB2033481B (en) | 1978-10-19 | 1979-10-08 | Carburettor with automatic choking and acceleration device |
US06/084,156 US4276238A (en) | 1978-10-19 | 1979-10-12 | Carburetor with automatic choking and acceleration device |
DE2942377A DE2942377C2 (en) | 1978-10-19 | 1979-10-19 | Constant pressure carburettor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12885378A JPS5554654A (en) | 1978-10-19 | 1978-10-19 | Variable venturi carburetor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5554654A true JPS5554654A (en) | 1980-04-22 |
Family
ID=14994983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12885378A Pending JPS5554654A (en) | 1978-10-19 | 1978-10-19 | Variable venturi carburetor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5554654A (en) |
-
1978
- 1978-10-19 JP JP12885378A patent/JPS5554654A/en active Pending
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