Kohler Company

Troy Timothy Fredrick Becker

Aleko D Sotiriades

A closure device, such as a fuel cap, for controlling evaporative emissions from a fuel tank. In one aspect, the invention comprises: a housing defining an internal chamber about a central axis; a diffuser plate positioned within the internal chamber that separates the internal chamber into an upper zone and a lower zone; a hydrocarbon adsorbing media disposed in the upper zone of the internal chamber; an inlet passageway for introducing fuel vapor from a fuel vapor inlet port to the lower zone of the internal chamber; and at least one outlet passageway extending from the upper zone of the internal chamber to an atmospheric air outlet port.

Closure device for controlling evaporative emissions from a fuel tank

A closure device, such as a fuel cap, for controlling evaporative emissions from a fuel tank. In one aspect, the invention comprises: a housing defining an internal chamber containing a hydrocarbon adsorbing media; a fuel vapor diffuser extending from a floor of the internal chamber and into the internal chamber, the fuel vapor diffuser comprising: (1) an inlet passageway extending from a fuel vapor inlet port to a plenum in a top portion of the fuel vapor diffuser; and (2) a downcomer passageway extending from the plenum to at least one aperture located at a bottom portion of the fuel vapor diffuser, the at least one aperture forming a passageway between the downcomer passageway and the internal chamber; and at least one outlet passageway extending from the internal chamber to an atmospheric air outlet port.

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Manitowoc, WI, United States of America

Troy Timothy Fredrick Becker