| 摘要 |
PURPOSE:To prevent both the vaporization of fuel and the leakage of vaporized fuel vapor by providing a fuel bag body inside a tank, providing a fuel feeding port and a flow out port on the upper and lower parts of said fuel bag body, and expanding and contracting said fuel bag body accompanying the feeding and discharging of fuel. CONSTITUTION:A projecting part 21 is formed on the top face of a tank body 20 and a through hole 22 is provided on its top part. And, a fuel bag body 25 which is expanded and closely attached to the tank body 21 when fully filled with fuel is provided in the tank body 20. Further, the upper part of the fuel bag body 25 is installed to the flow-in port 27 which is projected out into the tank of the fuel feeding port 26 installed on the tank body 20, while its lower part is installed to a flow-out port 34 provided through the bottom part of the tank body 20. When fuel is fed, the fuel bag body 25 is expanded as it is filled with gasoline G, etc. while air A inside the tank body 20 is allowed to escape out of the through hole 22. Thereby, the vaporization of fuel can be prevented while preventing vaporized fuel vapor from leaking outward. |
