JPS5924576Y2 - fuel tank - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a fuel supply suction pipe for a fuel tank.

Conventionally, the fuel supply suction pipe 2 disposed inside the fuel tank 1 has only a fuel suction port 3', which is an opening 3 at the end of the suction pipe 2, as shown in FIG. The caliber is also suction pipe 2
The inner diameter was the same as that of the

Therefore, foreign matter 4 in the fuel tank, such as "foreign matter due to peeling of the plating layer inside the tank", foreign matter in gasoline, etc.
Alternatively, foreign matter such as dirt that entered the fuel tank during the manufacturing process, especially foreign matter with approximately the same diameter as the inner diameter of the intake pipe 2, could block the fuel intake port 3', preventing fuel from being supplied to the engine. .

In addition, there is a structure in which a filter is provided at the fuel intake port 3' in order to filter foreign matter 4 in the fuel tank 1.
Those with the same structure had the drawbacks of high manufacturing costs and time-consuming work to replace and check the filter.

The present invention solves the above-mentioned drawbacks by disposing at least a part of the end of the fuel supply suction pipe disposed inside the fuel tank along the bottom of the fuel tank, and opening the tip of the fuel supply suction pipe. is smaller than the inner diameter of the fuel supply suction pipe, and a plurality of holes having an inner diameter smaller than the inner diameter of the fuel suction pipe are provided on the outer circumferential surface of the suction pipe along at least the bottom of the fuel tank at the end of the fuel supply suction pipe. The main feature of the fuel tank is that the fuel is reliably supplied to the engine.

Hereinafter, an embodiment of the present invention will be explained with reference to FIGS. 2 and 3. 10 is a fuel tank, 11 is not shown, but one end is connected to a carburetor, a fuel injection pump, an oil tank, etc., and the other end is a fuel tank. 10 is a fuel supply suction pipe disposed within the fuel supply suction pipe.

Reference numeral 12 denotes an end portion of the fuel supply suction pipe 11 disposed inside the fuel tank 10, and the end portion may be disposed along at least a portion of the bottom portion 13 of the fuel tank 10, but in the case of this embodiment. As shown in FIG. 2, the fuel tank 10 extends substantially over its entire length at the bottom 13 of the fuel tank 10.

14 is the tip of the end 12 of the fuel supply suction pipe 11;
The fuel intake port 15 has a tapered shape and has an opening smaller than the inner diameter of the intake pipe 11 .

In this embodiment, the tip portion 14 has a tapered shape,
It is sufficient that the opening diameter of the fuel intake port 15 is smaller than the inner diameter of the intake pipe 11.

Reference numeral 16 designates a plurality of holes provided on the outer circumferential surface of the end 12 of the fuel supply suction pipe 11 and having a smaller diameter than the inner diameter of the suction pipe 11. It is sufficient if it can at least compensate for the decrease in fuel supply amount that occurs.

Reference numeral 17 indicates foreign matter such as peeling of the plating layer inside the tank, foreign matter in the gasoline, or dust that entered the fuel tank during the fuel tank manufacturing process.

According to the present invention, since the tip end 14 of the fuel supply suction pipe 11 is tapered, the diameter of the fuel suction port 15 is smaller than that of the conventional one.
Furthermore, even if the foreign matter 17 blocks the fuel intake port 15, the fuel is supplied to the engine through the plurality of holes 16 as before, so that the foreign matter 17 does not interfere with the fuel supply to the engine. This has the effect of being prevented.

Furthermore, since the plurality of holes 16 have a smaller diameter than the inner diameter of the end portion 12, foreign matter 17 that has passed through the holes 16 will not enter the fuel supply suction pipe 11 and obstruct the fuel supply to the engine. This effect is achieved.

Furthermore, the present invention provides a plurality of holes 16 at the end 12 of the fuel supply pipe 11, and the tip 14 of the fuel supply suction pipe 11.
Since it is only necessary to press and process the material, the process is easy and the cost is low.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional fuel tank, FIG. 2 is a sectional view of a fuel tank showing an embodiment of the present invention, and FIG. 3 is an enlarged sectional view of the end 12 of the fuel supply/intake pipe 11. 10...Fuel tank, 11...Fuel supply suction pipe, 15...Fuel intake port, 16...
...hole.

Claims (1)

[Scope of utility model registration request] At least a portion of the end of the fuel supply suction pipe disposed inside the fuel tank is arranged along the bottom of the fuel tank, and the tip opening of the fuel supply suction pipe is smaller than the inner diameter of the fuel supply suction pipe. A fuel tank characterized in that a plurality of holes having an inner diameter smaller than an inner diameter of the fuel supply suction pipe are provided on the outer peripheral surface of the fuel supply suction pipe along at least the bottom of the fuel tank at the end of the fuel supply suction pipe.