KR19980047043A - Automatic discharge device of foreign substance in automobile fuel tank - Google Patents

Abstract

The present invention provides an apparatus for automatically discharging foreign matters from a fuel tank capable of automatically removing foreign matters and moisture accumulated on the bottom of an automobile fuel tank. To achieve this, deeply downward in the center of the bottom of a conventional fuel tank 1 is provided. The storage part 6 which is bent and the foreign matter is stored, the discharge hole 7 which is wide open at the center part of the storage part 6, and the lower part is narrowly opened, and the storage part 6 is centered on the discharge hole 7. It is installed in the center of the bottom of the bottom, the inlet (10a) in the lower left, the outlet (10b) is drilled in the upper left and up, and can move up and down in the float chamber (9) along the water surface, the gasoline sinks and floats floating on the water A float guide member 10 having a built-in (8), a steel ball (12) connected to the float (8) by a spring (11) and moving up and down along the water surface to open and close the discharge hole (7); Steel ball 12 in the discharge hole 7 Is characterized by consisting of steel stopping member 13 is seen to prevent the separation of the upper.

According to the present invention, since the reservoir is formed on the bottom of the vehicle fuel tank, a separate foreign matter discharge device is installed on the bottom of the reservoir to automatically discharge the debris and water stored on the floor. Compared with the related art, it is possible to prevent the failure due to fuel pump corrosion caused by impurities accumulated in the bottom of the fuel tank, to shorten the replacement cycle of the fuel filter, and to eliminate the cause of the combustion failure, etc. It is possible to maintain and manage the vehicle efficiently by preventing degradation.

Description

Automatic discharge device of foreign substance in automobile fuel tank

The present invention relates to a device for automatically discharging foreign matters of an automobile fuel tank. In particular, a separate foreign matter discharging device is installed in a storage portion formed on the bottom surface of a fuel tank, so that foreign matters stuck to the storage portion are affected by the operation of the opening and closing means of the apparatus. The main focus is on the automatic discharge by air.

As shown in FIG. 4, the fuel tank 1 storing conventional fuels includes a fuel inlet 2 for injecting fuel, a suction filter 3 for removing impurities in the fuel, and a fuel tank 1. It is installed and sent to the injector as a pressurized fuel, the fuel pump (4) having an excellent function in suppressing the pump operation noise and vapor lock because it is immersed in the fuel in the fuel tank (1), and the fuel pipe connecting between the fuel pump and the engine (5) and the like.

The fuel tank 1 having such a structure accumulates a large amount of foreign matter or moisture contained in the fuel at the bottom of the fuel tank when it is used for a long time, so that the inner wall of the fuel pump immersed in the fuel by the moisture contained in the fuel Not only was it corroded,

Moisture evaporated in the fuel condensed on the upper end inside the fuel tank (1), the inner wall of the fuel tank (1) was corroded by water droplets formed.

In addition, there is a problem that the output performance of the engine is reduced due to clogging of the fuel filter due to a large amount of foreign matter accumulated on the bottom of the fuel tank.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a device capable of automatically discharging foreign matter or moisture accumulated on the bottom of an automobile fuel tank.

1 is a side cross-sectional view of a fuel tank of the present invention

FIG. 2 is an enlarged cross-sectional view of the main part in FIG. 1; FIG.

Figure 3a shows the operating state of the present invention, a state in which the drain hole is closed

Figure 3b is a view showing the operating state of the present invention, the drain hole is open state

4 is a side cross-sectional view of a conventional fuel tank

Explanation of symbols on the main parts of the drawings

1: fuel tank 2: fuel inlet

3: suction filter 4: fuel pump

5: fuel pipe 6: storage part

7: drain hole 8: float

9: float chamber 10: float guide member

10a: inlet 10b: outlet

11: return spring 12: steel ball

13: steel ball blocking member

When described in detail by the accompanying drawings the configuration and operation of the present invention for achieving the above object is as follows.

1 and 2, the fuel tank 1 for storing fuel includes a fuel injection port 2 for injecting fuel, a suction filter 3 for removing impurities in the fuel, and a fuel tank 1 It is installed inside and sent to the injector as a pressurized fuel, and is immersed in the fuel in the fuel tank (1), which has an excellent function in suppressing pump operation noise and vapor lock, and connecting the fuel pump and the engine. The fuel pipe 5, the reservoir 6 which is bent downward deeply in the center of the bottom surface of the fuel tank 1 to store water or impurities, and the upper portion is wider and the lower portion is narrower at the central portion of the reservoir 6 Drilled discharge hole 7 and the outlet hole (7) in the center of the bottom of the bottom of the reservoir 6 is installed in the center, the inlet (10a) in the lower left, the outlet 10b in the upper right is drilled, the water surface Can move up and down inside the float chamber (9). Float guide member 10 in which the float 8 of the floating material is embedded, and the steel is connected to the float 8 by a return spring 11 to move up and down along the water to open and close the discharge hole 7. It consists of the ball 12 and the steel ball blocking member 13 which prevents | deviates to the upper direction of the steel ball 12 in the said discharge hole 7. As shown in FIG.

The operation according to the above configuration will be described based on FIGS. 3A and 3B.

First, when the water level is low and the buoyancy of the float 8 is smaller than the tensile force of the return spring 11, the steel ball 12 in the discharge hole 7 closes the lower part of the discharge hole 7 so that the fuel tank ( No water or debris stored in 1) is discharged outward (Fig. 3a).

When the water level is gradually increased so that the buoyancy of the float 8 and the tensile force of the return spring 11 are the same, the water or debris stored in the fuel tank 1 is not discharged as described above.

However, when the surface of water becomes higher and the buoyancy of the float 8 becomes greater than the tensile force of the return spring 11, the steel ball 12 contained in the discharge hole 7 is moved upward by the tension of the return spring 11. The discharge hole 7 is opened to discharge all the water and the debris stored in the fuel tank 1 to the outside (FIG. 3B).

When the water surface is lowered again by the discharge, the buoyancy force of the float 8 becomes smaller than the tensile force of the return spring 11, and the steel ball 12 closes and closes the discharge hole 7 again.

As described above, according to the present invention, the reservoir portion is formed on the bottom surface of the vehicle fuel tank, and a separate foreign matter discharge device is installed on the bottom surface of the reservoir portion to automatically discharge the foreign substances or water stored on the bottom surface. As a result, it is possible to prevent a failure due to fuel pump corrosion, which may be caused by foreign matter accumulated on the bottom surface of the fuel tank, to shorten the replacement cycle of the fuel filter, and to reduce the cause of combustion failure. By removing it, the engine performance can be prevented and the vehicle can be efficiently maintained and managed.

Claims (2)

A reservoir 6 formed bent downward deeply on the bottom surface of the ordinary fuel tank 1; a discharge hole 7 provided with a steel ball blocking member 13 in the central portion of the reservoir 6; The float guide member 10 which is installed in the bottom surface of the storage part 1, has the inlet port 10a and the outlet port 10b, and has the float 8 which moves up and down along the water surface in the float chamber 9 inside. And an opening / closing means connected to the float (8) by a return spring (11) to open and close the discharge hole (7). The apparatus of claim 1, wherein the opening and closing means is a steel ball (12).