| 摘要 |
A fuel tank overflow preventer comprises an overflow tank disposed inside a fuel tank adjacent the roof The overflow tank has a lower hole spaced below an upper hole. The lower and upper holes communicate the overflow tank interior with the fuel tank interior. The overflow tank holes are disposed away from the fuel fill to preclude filling the overflow tank directly from the fuel fill. After filling the fuel tank interior with fuel, the fuel will enter the overflow tank interior through the lower hole at a predetermined rate of flow. This will cause the fuel level in the overflow tank to rise. Conversely, the fuel level in the fuel tank will fall until reaching equilibrium with the overflow tank fuel level. An air space in the fuel tank interior will thereby be established so as to accommodate thermal expansion and prevent spilling of the fuel.
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