JPS62197753U

JPS62197753U -

Info

Publication number: JPS62197753U
Application number: JP8644986U
Authority: JP
Priority date: 1986-06-06
Filing date: 1986-06-06
Publication date: 1987-12-16

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の第１実施例を示し
、第１図は燃料供給装置の説明図、第２図は燃料
供給装置の回路図、第３図及び第４図は本考案の
第２実施例を示し、第３図は燃料供給装置の説明
図、第４図は燃料供給装置の回路図、第５及び第
６図は本考案の第３実施例を示し、第５図は燃料
供給装置の説明図、第６図は回路図、第７図及び
第８図は本考案の第４実施例を示し、第７図は燃
料供給装置の説明図、第８図は回路図、第９図及
び第１０図は第５実施例を示し、第９図は燃料供
給装置の概略説明図、第１０図は回路図、第１１
図は従来例に係る断面図である。１……燃料供給通路、２……キヤブレタ、３…
…インレツト通路、４，２７，２８……戻り通路
、８……ニードルバルブ、１２……キヤブレタフ
ロート室、１３……フロート、１６……燃料ポン
プ、２６……燃料戻し用ポンプ、Ｔ……タイマ、
Ｅ……イグニツシヨンスイツチ。 1 and 2 show a first embodiment of the present invention, FIG. 1 is an explanatory diagram of the fuel supply device, FIG. 2 is a circuit diagram of the fuel supply device, and FIGS. 3 and 4 are the present invention. FIG. 3 is an explanatory diagram of the fuel supply device, FIG. 4 is a circuit diagram of the fuel supply device, FIGS. 5 and 6 show a third embodiment of the present invention, and FIG. 6 is an explanatory diagram of the fuel supply device, FIG. 6 is a circuit diagram, FIGS. 7 and 8 show a fourth embodiment of the present invention, FIG. 7 is an explanatory diagram of the fuel supply device, and FIG. 8 is a circuit diagram. , FIG. 9 and FIG. 10 show the fifth embodiment, FIG. 9 is a schematic explanatory diagram of the fuel supply device, FIG. 10 is a circuit diagram, and FIG.
The figure is a sectional view of a conventional example. 1... fuel supply passage, 2... carburetor, 3...
... Inlet passage, 4, 27, 28 ... Return passage, 8 ... Needle valve, 12 ... Carburetor float chamber, 13 ... Float, 16 ... Fuel pump, 26 ... Fuel return pump, T ... timer,
E...Ignition switch.

Claims

[Scope of utility model registration request]

In a fuel supply device in which a fuel supply passage having a fuel pump connected to an inlet passage opened and closed by a needle valve that moves up and down following a float in a carburetor float chamber, one end of the passage returns to the carburetor float chamber. The other end of this return passage is connected to the suction side of the fuel pump, and the fuel pump is energized for a certain period of time after the engine is stopped, and the fuel pump is connected between the fuel pump and the power source that operates the fuel pump. 1. A fuel supply device for a carburetor, comprising a timer that operates a fuel pump to circulate and replace at least part of the fuel in the fuel supply system.