Pillsbury Winthrop LLP
Canister for evaporated fuel treatment apparatus
In order to make a fuel in a vapor phase from a fuel tank to be easily liquefied in a liquid trap, reduce an amount of a gasoline vapor entering from the liquid trap to a diffusion of a canister and extend a service life of an activated carbon, in accordance with a canister for an evaporated fuel treatment apparatus, a fuel in a vapor phase from a fuel tank (24) enters into a liquid trap (21A) from an evaporated fuel passage (23) via a tank port (13A). Since an inner diameter of a canister communication port (22A) is small, an invasion of a gasoline vapor from the liquid trap (21A) to a first diffusion (12) is restricted, so that a liquefaction in the liquid trap (21A) is promoted. When the fuel tank (24) is cooled and an internal pressure of the tank becomes a negative pressure, a fuel in a liquid phase in the liquid trap (21A) flows backward so as to prevent a lot of fuel in a liquid phase from being collected within the liquid trap (21A).
Aisan Kogyo Kabushiki Kaisha Toyota Jidosha Kabushiki Kaisha
F
F02M
inventional
Hideo Takashi
Yamada Ishikawa