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Fuel tank structure

A fuel tank and fuel technology, applied to the substructure, the arrangement combined with the fuel supply of the internal combustion engine, and the power plant, which can solve problems such as leakage and operability deterioration

Inactive Publication Date: 2011-12-28
MITSUBISHI MOTORS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, part of the fuel g deviates from the fuel receiving container 150 and flows, and finally leaks outside the fuel receiving container 150, causing a problem of deterioration of operability.
In addition, this phenomenon also occurs in the conventional fuel tank of Patent Document 1.

Method used

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Examples

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Embodiment Construction

[0020] figure 1 A fuel tank 1 to which a fuel tank structure according to an embodiment of the present invention is applied is shown.

[0021] The fuel tank 1 is arranged under the floor of the vehicle not shown in the figure, and is fixed on the underfloor wall in a predetermined connection manner.

[0022] When manufacturing the fuel tank 1, first provide a pair of half-cases 3, 4, which are stamped and formed into a deep container shape with flanges 2 on the periphery; then make these upper and lower half-cases The respective flanges 2 and 2 of 3 and 4 are superimposed, and the two superimposed flanges 2 and 2 are welded together by seam welding, thereby integrally forming a fuel tank body 1' in the shape of a sealed container.

[0023] A fuel injection port 5 is formed on the top fu of the upper half case 3, and the fuel injection port 5 is sealed with a fuel cap 10 during normal use. The lower half box 4 includes a flat portion 601 on its low wall 6 , an inclined perip...

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PUM

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Abstract

The invention discloses a fuel tank structure, which can prevent fuel from being transferred from the periphery of the support surface of the oil discharge bolt to the lowermost part of the main low wall side of the tank when the oil discharge hole is opened, and can prevent part of the fuel from leaking into the fuel receiving container Outside. The fuel tank structure comprises: a fuel tank body (1'), which has a recess (7), and the recess (7) makes the bottom (6) of the fuel tank (1) recess from the main low wall surface (f0) to the inside of the tank body Formed; oil discharge hole (hole for fuel discharge) (11), set on the retreat wall (8) in the recess (7); oil discharge bolt (14), assembled on the oil discharge hole (11); discharge fuel The step part (12) for falling is formed on the retreat wall (8) surrounding the oil discharge hole (11), and the step part is more concave to the inner side of the box than the retreat wall, forming a An annular bent portion between the inner edge on the peripheral side of the inner edge and the annular concave portion continuously formed from the inner edge to the outer peripheral side thereof.

Description

technical field [0001] The invention relates to a fuel tank structure loaded on a vehicle. Background technique [0002] Generally, a fuel tank mounted on a vehicle is arranged at the lower part of the vehicle body, and an oil discharge hole is formed on the lower wall of the fuel tank. The drain hole is kept closed by tightening the drain bolt. [0003] In such a fuel tank, an oil discharge hole for taking out fuel etc. in the tank is provided on the lower wall of the tank, so that the fuel in the fuel tank can be easily and accurately stored in the fuel receiving container. However, when adopting the structure in which the oil discharge hole is formed on the lower wall of the box body and closed with the oil discharge bolt, the oil discharge bolt of the lower wall of the box body remains protruding to the road surface. In this case, stepping stones and protrusions on the road surface are likely to interfere with the oil discharge bolt when driving and damage the side of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K15/073B60K15/03
Inventor 中山和俊
Owner MITSUBISHI MOTORS CORP