Oil filling pipe assembly of passenger vehicle

Abstract

The invention discloses an oil filling pipe assembly of a passenger vehicle. A guide device is also arranged in an oil filling pipe; a plurality of gun barrel limiting blocks are arranged at intervals in the circumferential direction of the inner wall above a direct connection pipe; the gun barrel limiting blocks comprise connection ends used for fixing the inner wall of the direct connection pipe; and the relative ends of the connection ends of the gun barrel limiting blocks define a guide space which is provided for a gun barrel to penetrate into and is coaxial with the direct connection pipe. When an oil gun is inserted for filling oil, the guide device can be used for limiting the gun inserting position to avoid the problems of advance gun jumping and reverse spraying caused by incorrect operation; at the same time, the oil filling length at the straight end of the oil filling pipe is increased, so that the flowing space of oil liquid in the oil filling process is enlarged, the time of collision between the oil liquid and the inner wall of the oil filling pipe is delayed, and the possibility of backflow of fuel oil is reduced; and due to the design of a bent pipe, the impact force of the oil liquid on the pipe wall due to the change of the flowing direction of the oil liquid is effectively reduced, and the possibility of backflow of the fuel oil is further reduced.

Description

technical field [0001] The present invention relates to a fuel filler pipe, more precisely, to a fuel filler pipe assembly suitable for general vehicle fuel. Background technique [0002] The design of the general vehicle fuel pipe device is required to meet the phenomenon of no jumping gun and back spray during the refueling process. However, due to the limitation of the surrounding conditions in the actual design process, the length of the straight end of the fuel pipe device (generally required to be ≥160mm) is insufficient, resulting in that the mouth of the fuel nozzle directly touches the inner wall of the fuel pipe when the refueling gun is inserted, and the oil directly impacts on the inner wall of the fuel pipe when refueling. On the other hand, there will be a surge phenomenon, which will easily lead to the phenomenon of jumping the gun in advance of refueling and refueling anti-spray. [0003] Moreover, based on the structure of the refueling pipe in the prior ar...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of jumping the gun in advance when refueling in the prior art, the present invention provides a refueling pipe assembly for passenger cars

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