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Seal combination structure for fuel system

A technology of combined structure and fuel system, which is applied to the layout, power unit, vehicle parts, etc. combined with the fuel supply of the internal combustion engine, can solve the problems of easy adhesion and sealing effect of the sealing ring, small sealing area, instability, etc., and achieves convenient processing, The flanging process is simple and the effect of increasing safety

Active Publication Date: 2021-03-30
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after practical investigation, it is found that the existing sealing structure mainly relies on the line contact between the flange of the fuel port and the sealing ring, which has the disadvantages of small sealing area, easy adhesion of the sealing ring and unstable sealing effect.

Method used

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  • Seal combination structure for fuel system
  • Seal combination structure for fuel system
  • Seal combination structure for fuel system

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] see figure 1 , which shows a sealing structure 100 for a fuel system according to an embodiment of the present invention. The sealing combination structure 100 includes a fuel filler pipe 10, a fuel filler pipe sealing member 20 and a fuel tank cap 30, the fuel filler pipe sealing member 20 is fixedly connected to the nozzle of the fuel filler pipe 10, and the fuel filler pipe sealing member 20 and the fuel filler pipe 10 are arranged at an angle to each other, The range of the angle α is set between 30° and 60°, and the sealing device 31 on the fuel tank cap 30 and the sealing member 20 of the filler pipe cooperate with each other and are sealingly connected.

[0025] combine Figure 1 to Figure 3 As shown, in an example of t...

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Abstract

The invention discloses a sealing combined structure for a fuel system, belonging to the field of automobile fuel systems. The sealing composite structure includes a fuel filler pipe, a fuel filler pipe sealing member and a fuel tank cap, the fuel filler pipe sealing member is fixedly connected to the nozzle of the fuel filler pipe, and the fuel filler pipe sealing member and the fuel filler pipe are arranged at an angle to each other, and the angle is set The range is from 30° to 60°, and the sealing device on the fuel tank cap and the sealing member of the fuel filler pipe cooperate with each other and are sealingly connected. The sealing combination structure for the fuel system provided by the present invention can seal the inclined surface of the nozzle of the fuel filler pipe with the sealing ring of the fuel tank cap by expanding the head of the fuel filler pipe, thereby increasing the sealing area to the greatest extent. It also solves the problem that the sealing ring is easy to fall off during use, and increases the safety during use; it also has the advantages of simple stamping and flanging processes, convenient processing, easy promotion, good versatility, and low cost.

Description

technical field [0001] The invention relates to the field of automobile fuel system, in particular to a sealing combination structure for the fuel system. Background technique [0002] As an important part of the fuel system, the fuel filler pipe plays a guiding role in the process of fuel filling, and cooperates with the fuel tank cap to seal the fuel tank after the fuel filling is completed, and prevents fuel vapor from escaping through the fuel filler nozzle. polluted environment. As well as the potential safety hazards due to the escape of fuel vapor. [0003] The existing sealing structure of the fuel system mainly ensures the sealing effect by controlling the flatness of the flanging of the filling nozzle. However, after practical investigation, it was found that the existing sealing structure mainly relies on the line contact between the flange of the fuel filler and the sealing ring, which has the disadvantages of small sealing area, easy adhesion of the sealing ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K15/04
CPCB60K15/0406B60K2015/0451
Inventor 肖垂元黄波刘成明
Owner CHERY AUTOMOBILE CO LTD
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