Fuel vapor recovery
OwnerJoel Kopinskyinventor
Life of this patent
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Abstract
Fuel vapor emissions from a fuel tank directed to a canister containing adsorbent are minimized by an intermediate condenser and conduit configuration. Condensing and cooling fuel vapor emissions allows a reduction in canister capacity, where the canister can still meet and accommodate refueling and/or diurnal emissions control requirements. Pressurized and unpressurized fuel tanks for various vehicles, including vehicles with an internal combustion engine and hybrid electric vehicles, can be configured with the present fuel vapor recovery systems.
Claims24
A fuel vapor recovery system comprising:
- a fuel tank;
- a canister including an adsorbent;
- a conduit fluidly coupling the fuel tank and the canister;
- and
- a condenser configured to cool a portion of a fluid in the conduit between the fuel tank and the canister;
- wherein the fuel vapor recovery system is configured to direct a flow of the fluid in the conduit from the fuel tank to the canister, including the portion of the fluid in the conduit cooled by the condenser, and direct condensed fluid in the conduit to the fuel tank.
A method of fuel vapor recovery comprising:
- moving a fluid from a fuel tank to a canister, the canister including an adsorbent;
- and
- cooling the fluid moving from the fuel tank to the canister.
A method of fuel vapor recovery comprising:
- providing a fuel tank including a fluid, a canister including an adsorbent, a conduit fluidly coupling the fuel tank and the canister, and a condenser configured to cool a portion of the fluid in the conduit;
- moving the fluid from the fuel tank to the canister;
- and
- cooling the fluid moving from the fuel tank to the canister using the condenser.
Dependencies are inferred from the claim text.