| 摘要 |
PROBLEM TO BE SOLVED: To reduce a generation amount of an evaporated fuel in a fuel tank by preventing concentration decline of the evaporated fuel in the fuel tank. SOLUTION: This evaporated fuel treatment device is equipped with a main canister 20 for storing an adsorbent, a tank passage 14 for communicating the main canister 20 with the fuel tank T, a purge passage 12 for connecting the main canister 20 with an intake pipe W of an engine E, and an atmospheric air passage. A middle canister 30 for storing the adsorbent, and an evaporated fuel diffusion suppression container 40 arranged between the middle canister 30 and the main canister 20 are provided in the middle of the tank passage 14, and the evaporated fuel diffusion suppression container 40 is equipped with a diffusion suppression passage for connecting the middle canister 30 with the main canister 20, and has a constitution capable of suppressing diffusion of the evaporated fuel between the middle canister 30 and the main canister 20 when gas does not flow in the diffusion suppression passage. COPYRIGHT: (C)2008,JPO&INPIT
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