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Stop valve device of vehicle fuel tank

A shut-off valve and fuel tank technology, which is applied in the direction of the valve device, power device, and the arrangement of the fuel supply of the internal combustion engine, etc., can solve the problems of unable to tightly seal the oil circuit, leakage, etc., and achieve the expansion of the effective opening area and smooth oil injection process Effect

Inactive Publication Date: 2011-05-25
DONG HEE IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the oil filling is completed, the shut-off valve (23) may be tilted when it returns to its original position or the fuel tank is impacted while the car is running. Therefore, the shut-off valve (23) cannot tightly seal the oil circuit
In this way, the fuel flowing back from the fuel tank may leak to the outside through the oil circuit

Method used

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  • Stop valve device of vehicle fuel tank
  • Stop valve device of vehicle fuel tank
  • Stop valve device of vehicle fuel tank

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Embodiment Construction

[0018] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0019] figure 2 It is a sectional view of an embodiment of the present invention; image 3 , Figure 4 It is a cross-sectional view of the shut-off valve in the closed state of the oil circuit in the same embodiment; Figure 5 It is a sectional view of the shut-off valve in the open state of the oil passage in the same embodiment; Image 6 It is a structural schematic diagram of the shut-off valve in the same embodiment.

[0020] Such as Figure 2-Figure 5 As shown, the fuel pipe 11 is installed on the fuel tank, and the shut-off valve 13 is installed at the bottom of the fuel pipe. The shut-off valve 13 can move up and down and is supported...

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Abstract

The invention relates to a stop valve device of vehicle fuel tanks which can improve the air tightness between the stop valve and an oiling pipe. A fuel pipe is mounted on the fuel tank, and the stop valve is mounted at the inner bottom of the fuel pipe, can move up and down, and is supported by a compression spring. The head of the stop valve is spherical, while the valve step at the lower part of the interior of the fuel pipe is a horizontal plane; a sealing groove is disposed at the outer ring of the lower part of the stop valve head, and a sealing ring is mounted in the sealing groove. Based on the stop valve device of vehicle fuel tanks of the invention, the effective opening area of the discharge space of the fuel pipe is enlarged, and the oiling process into the fuel tank is more fluent. In addition, even though the stop valve has a certain migration due to the reposition process of the stop valve or due to the impact of the fuel tank received during the vehicle running process, the oiling channel can be stably blocked by the stop valve.

Description

technical field [0001] The invention relates to a cut-off valve used in an oil filling port of an automobile fuel tank. Background technique [0002] Generally speaking, a cut-off valve is installed on the fuel tank of the car, which can prevent the fuel from flowing backwards and can move up and down. [0003] The above-mentioned cut-off valve is supported by a compression spring. When filling the oil, the cut-off valve moves downwards and opens the oil passage under the fuel injection pressure; when the oil filling is completed, the cut-off valve moves upwards and blocks the injection passage due to the elastic force of the compression spring. [0004] figure 1 It is a sectional view of an automobile fuel tank shut-off valve used in the prior art. [0005] Such as figure 1 As shown, generally, the fuel pipe (21) is installed on the fuel tank, and the shut-off valve (23) is installed at the inner bottom of the fuel pipe (21), can move up and down, and is supported by a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K15/077F16K15/06
CPCB60K15/04B60K2015/03256F16K17/36
Inventor 崔基焕白承钟朴均范朴翔培
Owner DONG HEE IND
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