| 摘要 |
PURPOSE:To reduce the evaporation loss discharged to the atmosphere as evapo rated gas from a castor, by installing an evaporated gas liquefying part in a passage leading the evaporated gas inside a fuel tank into the castor, while liquefying the gas, and making it flow back to the fuel tank. CONSTITUTION:A separator 6, an evaporation pipe 5 and a filter 14 are all set up in the passage interconnected to an upper surface of a fuel tank and a castor. Successively an evaporated gas liquefying part consisting of an orifice plate 8 and a collision plate 9 is installed there. On the other hand, a reflex passage 11 interconnecting the fuel tank 1 and the evaporation pipe 5 is connected to an interval between the collision plate 9 of the evaporation pipe 5 and the orifice plate 8. And, in this passage, there is provided with a check valve 12 for preventing evaporated gas inside the fuel tank from flowing into the evaporation pipe 5 via the reflex passage 11. With this constitution, the evaporated gas passes through the orifice plate 8 and collides with the collision plate 9 whereby it is liquified, flowing back to the fuel 1 from the reflex passage 11 by its own weight, thus an evaporation loss in fuel is reduced.
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