JPS644853U

JPS644853U -

Info

Publication number: JPS644853U
Application number: JP9840987U
Authority: JP
Priority date: 1987-06-29
Filing date: 1987-06-29
Publication date: 1989-01-12

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す燃料タンク断
面図、第２図は同上実施例における逆止弁を示す
断面図、第３図は同上実施例における主・副ポン
プを備えた燃料ポンプの底面図、第４図は２個の
燃料ポンプを用いて構成した従来例を示す燃料タ
ンク断面図、第５図は主・副ポンプを備えた燃料
ポンプを用いて構成した従来例を示す燃料タンク
断面図である。１０……燃料タンク、１０Ａ，１０Ｂ……底部
空間、１０ａ……突出部、１１……燃料ポンプ、
１１ａ……主吸込口、１１ｂ……主吐出口、１１
ｃ……副吐出口、１１ｄ……副吸込口、１２ａ…
…主吸入パイプ、１２ｂ……副吸入パイプ、１５
……逆止弁。 Fig. 1 is a sectional view of a fuel tank showing one embodiment of the present invention, Fig. 2 is a sectional view showing a check valve in the same embodiment, and Fig. 3 is a fuel pump equipped with main and sub pumps in the same embodiment. 4 is a cross-sectional view of a fuel tank showing a conventional example configured using two fuel pumps, and FIG. 5 is a fuel tank sectional view showing a conventional example configured using a fuel pump equipped with a main and sub pump. It is a sectional view of a tank. 10... fuel tank, 10A, 10B... bottom space, 10a... protrusion, 11... fuel pump,
11a...Main suction port, 11b...Main discharge port, 11
c...Sub-discharge port, 11d...Sub-suction port, 12a...
...Main suction pipe, 12b...Sub suction pipe, 15
……non-return valve.

Claims

[Scope of utility model registration request]

A fuel for an internal combustion engine in which a protrusion projecting upward is formed in a part of a bottom wall, and the fuel tank is partitioned into two bottom spaces by the protrusion, and the fuel is supplied to a fuel supply section of the engine by a fuel pump. In the supply device, the fuel pump is configured to integrally include two pumps, a main and a sub pump, and the suction port of the sub pump is opened to one side of the two bottom spaces, and the discharge port of the sub pump is opened to one side of the two bottom spaces. The two bottom spaces are opened on the other side, and the fuel is moved from one side of the bottom space to the other side of the bottom space by the suction force of the sub pump, while the suction port of the main pump is opened on the other side. The outlet of the main pump is connected to the fuel supply section of the engine, and the fuel in the bottom space on the other side is supplied to the fuel supply section of the engine, and the suction side of the sub pump 1. A fuel supply device for an internal combustion engine, comprising a check valve for preventing backflow of fuel.