JPS62124271U

JPS62124271U -

Info

Publication number: JPS62124271U
Application number: JP1031986U
Authority: JP
Priority date: 1986-01-29
Filing date: 1986-01-29
Publication date: 1987-08-07

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は同上実施例における一方向弁を示す断面図、
第３図は従来例を示す断面図、第４図は第２の従
来例を示す断面図である。１……燃料タンク、１Ａ，１Ｂ……底部空間、
１ａ……突出部、２……燃料ポンプ、３……吸入
パイプ、９……プレツシヤシギユレータ、１０…
…リターン通路、１１……負圧通路、１２……エ
ジエクタ、１５……連絡通路、１６……一方向弁
。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a sectional view showing a one-way valve in the same embodiment as above.
FIG. 3 is a sectional view showing a conventional example, and FIG. 4 is a sectional view showing a second conventional example. 1...Fuel tank, 1A, 1B...Bottom space,
1a... Protrusion, 2... Fuel pump, 3... Suction pipe, 9... Pressure sigulator, 10...
...Return passage, 11...Negative pressure passage, 12...Ejector, 15...Communication passage, 16...One-way valve.

Claims

[Scope of utility model registration request]

A fuel supply device in which a protrusion projecting upward is formed in a part of the bottom wall, and supplies fuel to an engine by a fuel pump from a fuel tank partitioned into two bottom spaces by the protrusion, the fuel supply device including: In a fuel supply system for an internal combustion engine in which surplus fuel from a pressure regulator installed downstream of a fuel pump is returned to the fuel tank via a return passage, both ends open into the bottom space and extend beyond the protrusion. a negative pressure passage whose one end is connected to the middle of the return passage to form an ejector and whose other end is connected to the upper part of the communication passage; and a float which is interposed in the negative pressure passage. A one-way valve comprising a valve body and a valve chamber having valve seats above and below the valve body and allowing air to flow only from the communication passage side to the return passage side. Feeding device.