Device for preventing evaporative fuel loss
AssigneesToyota Jidosha Kogyo Kabushiki Kaisha, Nippon Denso Co., Ltd.
InventorsEizi Hiramatsu, Yasushi Nakagawa, Hidenori Sato
Life of this patent
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Abstract
A device for preventing evaporative fuel loss comprising a casing which accommodates fuel gas absorbing agents. The casing is divided into three slender compartments by means of two partitions. A flow-in chamber is disposed at the entrance of the first compartment and is communicated with a fuel tank. Two dispersing chambers communicate the outlet of the first compartment and the inlet of the second compartment, and the outlet of the second compartment and the inlet of the third compartment, respectively. An atmospheric chamber is disposed at the exit of the third compartment and has an atmospheric port for flowing in purge air and for discharging filtered and clean air.
Claims4
A device for preventing fuel evaporative loss comprising a casing having an axis and accomodating fuel gas absorbing agents therein, said casing being divided into at least three compartments including at least a first compartment and a last compartment by means of at least two partitions which extend parallel to the axis of said casing, each compartment having absorbing agent layers therein and an inlet and an outlet, a flow-in chamber capable of being communicated with an evaporative fuel source connected to the inlet of said first compartment, an atmospheric chamber solely connected to the outlet of said last compartment and communicating with the outside of said casing via an atmospheric port, and at least two dispersing chambers, each for communicating the outlet of a compartment with the inlet of an adjacent compartment disposed adjacent to the ends of said compartments, the compartments being serially interconnected with dispersing chambers therebetween for flow of a gas in a serpentine manner.
Dependencies are inferred from the claim text.