Controlling fuel tank vapor venting during refueling

Details Controlling fuel tank vapor venting during refueling Controlling fuel tank vapor venting during refueling

B - Operations, Transporting

60

K

B60K 15/035 (2006.01) B60K 15/04 (2006.01)

Patent

CA 2404590

A fuel tank vapor vent system for a motor vehicle having a float operated vent valve in the tank top for permitting fuel vapor flow through a vapor conduit to a remote storage canister. A filler nozzle seal in the tank filler neck seals about the nozzle during refueling. A recirculation line is connected to the filler neck below the nozzle seal and also to the vapor conduit to the canister. Fuel flow in the filler neck during refueling effects recirculation of some-of the vapor flowing to the canister and minimizes the size of canister required.

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