Sealed tank system
AssigneeAisan Kogyo Kabushiki Kaisha
InventorsYoshikazu MIYABE, Yuya TANAKA
Life of this patent
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Abstract
A sealed tank system for a vehicle includes a canister that adsorbs and desorbs fuel vapor from the fuel tank. A vapor passage connects the fuel tank to the canister, and a purge passage links the canister to the engine's intake. A control unit implemented by at least one programmed processor manages a purge valve in the purge passage and a closing valve in the vapor passage. The vehicle also has a location information acquisition unit that acquires location information of the vehicle. When the control unit determines, based on the location information, that the closing valve is not needed, it remains open.
Claims4
A sealed tank system, comprising:
- a canister configured to adsorb and desorb fuel vapor evaporated in a fuel tank of a vehicle;
- a vapor passage connecting the fuel tank to the canister;
- a purge passage connecting the canister to an intake passage of an engine;
- a control unit implemented by at least one programmed processor;
- a purge valve installed in the purge passage and controlled by the control unit;
- and
- a closing valve installed in the vapor passage and controlled by the control unit,
- wherein the vehicle has a location information acquisition unit configured to acquire location information of the vehicle;
- and
- wherein the control unit is configured to maintain the closing valve in an open state when the control unit determines that the closing valve is not necessary based on the location information obtained by the location information acquisition unit.
Dependencies are inferred from the claim text.