Gm Global Technolgoy Operations, Inc.

Patti S Du Bois

Kenneth W Turner

Peter J Alfred

Brian J Dunham

Thomas W Greer

The intake for a fuel vapor storage canister separates entrained water from the entering purge flow. A separator in the form of an open ended box includes a series of alternating, interleaved, and downwardly sloped fins, the free edges of which create a series of restricting gaps that decrease in size in the upstream direction. Each gap, for some defined subrange of the total possible range of flow rates, accelerates the flow into the fin above it at the optimal velocity for water stripping.

Water separator for fuel canister purge

A bed of activated carbon granules is maintained tightly packed within a fuel vapor storage canister housing by a specially designed compensator. A pair of spring loaded, nested trays move axially relative to one another and push continually into the lower face of the carbon bed to keep it packed. The trays also define a continuous, self maintaining gap that is smaller than the expected carbon granule size, preventing them from falling out in spite of the swelling of the canister housing.

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Hamlin, NY, United States of America

Patti S Du Bois