Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2005-12-20
2005-12-20
Moulis, Thomas (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C096S132000
Reexamination Certificate
active
06976478
ABSTRACT:
An evaporated fuel adsorbing apparatus for an engine intake passage includes a layer of activated carbon disposed in the engine intake passage for adsorbing evaporated fuel. The activated carbon includes activated carbon pellets having pores. At least one of an average pellet size and an average pore size of the activated carbon is varied in an intake gas flow direction of the engine intake passage. More particularly, an average pore size of a first portion of the activated carbon located in an atmosphere side portion of the layer is greater than an average pore size of a second portion of the activated carbon located in an engine side of the layer. An average pellet size of the first portion of the activated carbon is smaller than an average pellet size of the second portion of the activated carbon.
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Itakura Hideaki
Kato Tetsuya
Kawano Takanobu
Nishimoto Takashi
Oda Kouichi
Kenyon & Kenyon
Moulis Thomas
Nippon Soken Inc.
Toyota Boshoku Kabushiki Kaisha
Toyota Jidosha & Kabushiki Kaisha
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