Cap with adsorption media

摘要

A fuel cap configured to be coupled with the opening of a fuel tank defining an interior for containing a volume of fuel. An inlet opening is configured to establish fluid communication with the fuel tank interior. An exit is in communication with a surrounding atmosphere, exterior to the fuel cap. A flow path is defined from the inlet opening to the exit. Adsorption media substantially fills the flow path and is configured to reduce the emission of VOC vapors through the exit to the surrounding atmosphere. The flow path extends spirally about an axis of the fuel cap from the inlet opening to the exit.

主权项

1. A fuel cap configured to be coupled with the opening of a fuel tank, the fuel tank defining an interior for containing a volume of fuel, the fuel cap comprising:
an inlet opening configured to establish fluid communication with the fuel tank interior; an exit in communication with atmosphere, exterior to the fuel cap; an interior wall having a curved, radially outward facing surface that defines at least a portion of a flow path between the inlet opening and the exit, the flow path extending spirally about an axis of the fuel cap from the inlet opening to the exit; and adsorption media substantially filling the flow path and configured to reduce the emission of VOC vapors through the exit to the surrounding atmosphere; wherein the curved radially outward facing surface of the internal wall and the flow path extend spirally about the axis for at least 300 degrees.