A capless fuel unit having an elongated tubular and cylindrical housing open at each end, the housing defining a first and a second longitudinally spaced fluid ports. A first flapper valve is associated with the first fluid port and a second flapper valve with the second fluid port, the flapper valves being movable between open and closed positions and resiliently urged toward their respective closed positions. A pressure relief valve is at least partially contained within an interior of the flapper valves. An arrangement of elastomeric seals incorporating a Graphene-derivative are positioned within the housing in proximity with the flapper valves for resisting hydrocarbon emission from fuel vapors escaping from the unit to the atmosphere.
AUTOMOTIVE FUEL SYSTEM HAVING ELASTOMERIC SEALS INCORPORATING GRAPHENE
2023-11-16
Patent
Electronic Resource
English
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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