Evaporated fuel processing device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuichi Nagasaku, Shuichi Aso, Katsunori Kamiya, Kazuhiro Yoneshige
Life of this patent
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Abstract
Recirculation piping that recirculates fuel discharged from a fuel pump to an intake side of a fuel pump in a fuel tank is provided. In addition, a canister is formed with a heat transfer surface that guides fuel flowing through the fuel tank during actuation of the fuel pump. When the recirculation piping recirculates the fuel discharged from the fuel pump into the fuel tank, the heat transfer surface transfers heat between the canister and the fuel discharged from the fuel pump among fuel in the fuel tank.
Claims11
An evaporated fuel processing device comprising:
- a fuel pump;
- an absorber that is mounted in a fuel tank and absorbs evaporated fuel generated in the fuel tank;
- a purge mechanism in which the evaporated fuel is introduced from the absorber into an intake pipe of an internal combustion engine;
- and
- a recirculation mechanism that recirculates fuel discharged from the fuel pump to an intake side of the fuel pump in the fuel tank is provided, wherein
- a portion of an intake passage of the fuel pump is formed in the absorber,
- the absorber is formed with a heat transfer surface that guides fuel flowing through the fuel tank during actuation of the fuel pump, and
- when the recirculation mechanism recirculates the fuel that is discharged from the fuel pump into the fuel tank, the heat transfer surface transfers heat between the absorber and the fuel that contains the fuel that is discharged from the fuel pump and flows in a direction to be suctioned to the fuel pump among fuel in the fuel tank.
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Dependencies are inferred from the claim text.