Evaporative fuel treatment apparatus of vehicle

An evaporative fuel treatment apparatus for a vehicle including an internal combustion engine, a fuel tank configured to store fuel, an evaporative fuel storage container filled with adsorbent such as activated charcoal in the interior thereof and configured to adsorb and store the evaporative fuel therein, a charge path configured to communicate the fuel tank and the evaporative fuel storage container, a purge path configured to communicate the evaporative fuel storage container and an air-intake system of the internal combustion engine and feed the evaporative fuel adsorbed in the evaporative fuel storage container to the air-intake system by depression at engine manifold of the internal combustion engine, an atmospheric air opening path configured to communicate the evaporative fuel storage container and the outside, a fuel supply port, and a fuel supply pipe which is a cylindrical portion extending from the fuel supply port into the fuel tank, comprising:

• a reverse flow preventing valve provided at an opening of the fuel supply pipe on the inside of the tank and being a one-way valve which allows the fuel to flow in the fuel supply direction;
• a positioning plate provided at an opening of the fuel supply pipe on a side of the fuel supply port and having a fuel supply gun insertion hole;
• a lower plate fixed to the fuel supply pipe between the positioning plate and the reverse flow preventing valve and having a fuel supply gun insertion hole;
• a bag-shaped seal member clamped between the positioning plate and the lower plate and configured to communicate with a liquid seal chamber by a communicating portion;
• and
• a stopper arranged between the lower plate and the reverse flow preventing valve and configured to control the amount of insertion of the fuel supply gun,
• wherein the reverse flow preventing valve is set to be opened so as to form a liquid trap in the liquid seal chamber between the reverse flow preventing valve and the lower plate when the fuel supply is started, and
• when the liquid surface reaches the lower plate, the fuel enters the seal member from the communicating portion, and the seal member is protruded toward the fuel supply gun insertion holes and is brought into tight contact with the fuel supply gun to seal a gap.