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US 7,008,470 B2Granted
Canister
AssigneeAisan Kogyo Kabushiki Kaisha
InventorsKatsuhiko Makino, Ryuji Kosugi, Tomonari Toki
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AssigneeAisan Kogyo Kabushiki Kaisha
InventorsKatsuhiko Makino, Ryuji Kosugi, Tomonari Toki
Estimating the term…
A canister, for inhibiting a diffusion phenomenon in an adsorbent layer as much as possible and certainly adsorbing fed evaporated fuel to inhibit blow-by of the evaporated fuel into the atmosphere, is constituted by filling a first adsorbent layer of the canister with activated carbon A having a large evaporated fuel adsorption and a weak holding power, and filling a second and a third adsorbent layers with activated carbon B having an intermediate evaporated fuel adsorption and a weak holding power and therefore having characteristics that the residual amount of the low boiling point components in the evaporated fuel after purge is small, whereby after the high temperature standing of the canister, the discharge of the evaporated fuel into the atmosphere can be inhibited.
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the first layer is filled with activated carbon (activated carbon A) having a large evaporated fuel adsorption and a weak holding power, and the adsorbent layer of the second layer is filled with activated carbon (activated carbon B) having an intermediate evaporated fuel adsorption and a weak holding power.
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the first layer is filled with activated carbon A having a large evaporated fuel adsorption and a weak holding power, and the adsorbent layer of the second layer is filled with activated carbon B having an evaporated fuel adsorption smaller than that of the activated carbon A and a holding power for evaporated fuel, substantially equal to that of the activated carbon A.
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the first layer is formed of activated carbon A, the adsorbent layer of the second layer is formed of activated carbon B, an evaporated fuel adsorption of the activated carbon A is larger than that of the activated carbon B, and a holding power for evaporated fuel of the activated carbon A is substantially equal to that of the activated carbon B.
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the second layer is divided into two portions by a filter or a plate having air permeability to form a second and a third adsorbent layers;
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the second layer is divided into two portions by a filter or a plate having air permeability to form second and third adsorbent layers;
A canister in which adsorbent layers of a first layer and a second layer obtained by dividing an adsorbent layer with a partition wall are arranged in series, wherein the adsorbent layer of the second layer is divided into two portions by a filter or a plate having air permeability to form second and third adsorbent layers;
Dependencies are inferred from the claim text.