Abstract: A tank assembly and fuel system for an engine having an engine intake. The fuel system may comprise a tank housing defining an interior and an exterior and an opening between the interior and the exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a closure housing connectable to the tank housing to selectively close the opening, a vapor path from the tank interior to the engine intake, and adsorption media for trapping harmful components in the vapor, the adsorption media being supported in the vapor path and being positioned in the vapor path between the tank interior and the engine intake.

Abstract: A tank assembly and a closure device for a tank assembly. The tank assembly may comprise a tank housing defining an interior and an exterior and an opening between the interior and the exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a flow path being defined between the interior and the exterior, a closure housing connectable to the tank housing to selectively close the opening, and adsorption media supported by at least one of the tank housing and the closure housing, vapor being routed along the flow path from the interior of the tank assembly, through the adsorption media and to the exterior of the tank assembly. In some aspects, the adsorption media is supported by the closure housing. In some other aspects, the tank housing includes a receptacle portion having a receptacle interior, the receptacle portion defining the flow path, and the adsorption media is supportable in the receptacle interior.