Abstract: A power source is provided for a machine. The power source includes an engine and an engine fuel system of the type that generates fuel vapor containing hydrocarbon material.

Abstract: A filler neck closure includes a closure base, a handle, and an apparatus mount. The closure base is adapted to mate with a fuel tank filler neck to close an opening into a fuel-conducting passageway formed in the fuel tank filler neck. In certain embodiments, a fuel treatment apparatus and/or vent apparatus is coupled to the apparatus mount.

Abstract: A cooling system apparatus includes a coolant tank, an overflow tank coupled to the coolant tank, and a pressure regulator. The pressure regulator regulates flow of fluid discharged from the coolant tank into the overflow tank.

Abstract: A fuel cap is provided for use in a filler neck of a tank of a vehicle having body portions which are conductive. The fuel cap includes a housing sized to fit into the filler neck and a cover coupled to an upper end of the housing. The cover is made of a non-conductive resin and an electrically conductive coating covering at least a portion of the non-conductive resin. The coating has a thickness of between approximately 0.1 and 0.6 mil. The fuel cap further includes a conductive discharge member having a first end engaged with the electrically conductive coating of the cover and a second end adapted to be coupled to one of the filler neck and the body of the vehicle to dissipate static charge.

Abstract: A vent apparatus includes a valve assembly and a tank mount adapted to support the valve assembly in a mounting aperture formed in a fuel tank. The valve assembly includes a movable vent valve and a valve housing containing the movable vent valve. A labyrinthine boundary is established between the valve housing and the tank mount to provide a low-permeation joint therebetween. The valve housing is made of a non-weldable plastics material and the tank mount is made of a weldable plastics material.

Abstract: A vent apparatus includes a valve assembly and a tank mount adapted to support the valve assembly in a mounting aperture formed in a fuel tank. The valve assembly includes a movable vent valve and a valve housing containing the movable vent valve. A labyrinthine boundary is established between the valve housing and the tank mount to provide a low-permeation joint therebetween. The valve housing is made of a non-weldable plastics material and the tank mount is made of a weldable plastics material.