JPH01108354U

JPH01108354U -

Info

Publication number: JPH01108354U
Application number: JP183688U
Authority: JP
Priority date: 1988-01-11
Filing date: 1988-01-11
Publication date: 1989-07-21
Anticipated expiration: 2003-01-11
Also published as: JPH0544534Y2

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の実施例を示し、第
１図は本考案装置のキヤブレタの縦断面図、第２
図および第３図は本考案装置の燃料回路の構成図
で、第２図はエンジン運転時、第３図はエンジン
の運転休止時の燃料回路を示ししている。第４図
は自動ブリーザ装置の縦断面図、第５図はキヤブ
レタの自動燃料ドレン装置に同自動ブリーザ装置
を組込んだ燃料回路の構成図である。１……自動燃料ドレン装置、２……キヤブレタ
、３……フロート室、４……燃料供給兼ドレン管
、５……燃料供給兼ドレン管のフロート室内開口
部、６……フロート、７……フロート弁、８……
逆止弁、９……操作コツク、１０……燃料タンク
、１１……燃料供給管、１２……ブリーザ兼ドレ
ン管、１３……ブリーザ。 1 to 3 show an embodiment of the present invention, FIG. 1 is a vertical sectional view of the carburetor of the device of the present invention, and FIG.
3 and 3 are configuration diagrams of the fuel circuit of the device of the present invention, with FIG. 2 showing the fuel circuit when the engine is operating, and FIG. 3 showing the fuel circuit when the engine is not operating. FIG. 4 is a longitudinal sectional view of the automatic breather device, and FIG. 5 is a configuration diagram of a fuel circuit in which the automatic breather device is incorporated into an automatic fuel drain device of a carburetor. DESCRIPTION OF SYMBOLS 1... Automatic fuel drain device, 2... Carburetor, 3... Float chamber, 4... Fuel supply/drain pipe, 5... Float chamber opening of fuel supply/drain pipe, 6... Float, 7... Float valve, 8...
Check valve, 9...operation control, 10...fuel tank, 11...fuel supply pipe, 12...breather/drain pipe, 13...breather.

Claims

[Scope of utility model registration request]

When the engine is operating, the fuel supply line of the fuel tank is opened to the carburetor, and the breather line of the fuel tank is opened to the breather, and when the engine is not operating, the breather line is closed,
In an automatic carburetor drain device that collects fuel in the carburetor into the fuel tank using negative pressure generated in the fuel tank, a fuel supply/drain pipe is connected to the bottom of the float chamber of the carburetor, and a fuel supply/drain pipe is connected to the bottom of the float chamber of the carburetor. supplying fuel from the fuel supply/drain pipe to the float chamber in conjunction with the floating and sinking of the float at the opening of the fuel supply/drain pipe;
It is equipped with a float valve that shuts off and a check valve that opens to the fuel supply/drain pipe when the internal pressure of the fuel tank drops below the internal pressure of the float chamber.When the engine is running, fuel is supplied from the fuel supply/drain pipe through the float valve. The fuel is supplied to the float chamber, and when the engine is not operating, the negative pressure generated in the fuel tank causes the fuel in the float chamber to flow back through the fuel supply/drain pipe through the float valve or check valve, and is recovered into the fuel tank. An automatic fuel drain device for a carburetor, which is characterized by: