| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device inhibiting sudden change of a concentration of fuel supplied from a canister to an intake system of an internal combustion engine. SOLUTION: The canister 10 having absorbent material 12 inside is provided with a vapor inlet hole 30, a negative pressure introduction hole 32 and an atmospheric air hole 34. The vapor inlet hole 30 communicates with a fuel tank. The negative pressure introduction hole 32 communicates with the intake system of the internal combustion engine. The atmospheric air hole 34 is opened to the atmosphere. A partition plate 24 is provided inside the canister 10 to divide the vapor inlet hole 30 and the negative pressure introduction hole 32. The partition plate 24 has a vent hole 26 which allows transfer of evaporated fuel from a vapor inlet hole 30 side to a negative pressure introduction hole 32 side. COPYRIGHT: (C)2008,JPO&INPIT
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