MISFUELLING PREVENTION SYSTEM FOR VEHICLE

摘要

A misfuelling prevention system for a vehicle may include an upper housing and an inner housing supported in the fuel filler neck, positioned in a bottom portion of the upper housing, and slidable in a single direction by a center returning spring interposed between the upper housing side and the inner housing, a stopper being rotatably installed at a side of the inner housing and elastically biased by a stopper spring, wherein the stopper is rotatable when a fuelling gun contacts with an end of the stopper, and a flapper having a first end rotatably installed at another side of the inner housing and a second end selectively caught in a groove portion of the stopper, wherein the flapper is opened by being pushed by the fuelling gun when the flapper is released from being caught by the stopper while the fuelling gun contacts with the end of the stopper.

主权项

1. A misfuelling prevention system for a vehicle, comprising:
an upper housing which is installed at an inlet side of a fuel filler neck; an inner housing which is supported in the fuel filler neck, positioned in a bottom portion of the upper housing, and slidable in a single direction by a center returning spring that is interposed between the upper housing side and the inner housing; a stopper and a stopper spring, the stopper being rotatably installed at a side of the inner housing and elastically biased by the stopper spring, wherein the stopper is rotatable when a fuelling gun contacts with an end of the stopper; and a flapper elastically biased by a flapper spring, the flapper having a first end that is rotatably installed at another side of the inner housing and a second end that is selectively caught in a groove portion of the stopper, wherein the flapper is opened by being pushed by the fuelling gun when the flapper is released from being caught by the stopper while the fuelling gun contacts with the end of the stopper.