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US 2017/0248243 A1Published application
Noise attenuated fill limit vent valve
AssigneeFord Global Technologies, LLC
InventorsXiankai Song, Zhe Li, Dennis Michael Harrigan, SR., Rodolfo Palma, SR.
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Abstract
Systems are provided for a noise attenuation device for a valve. In one example, a system may include a single noise attenuation device located below a base of a fill limit vent valve.
Claims20
A fluid tank comprising:
- a float axially displaceable in a valve, where the float sealingly engages an outlet of the valve in an upper position, and where the float contacts a lower portion of the valve in a lower position;
- wherein
- a protuberance of the float extends through an opening of the lower portion and engages with a noise attenuation device outside an annular passage of the valve.
A noise attenuation device for a fill limit vent valve comprising:
- a partially circular body aligned with an upper plane contiguous, the body also having elastic loops aligned with a lower plane via bends oblique to the upper and lower planes, where the upper plane is vertically higher than the lower plane when installed in the valve.
A valve for a fluid tank, comprising:
- a tubular upper body configured to allow the passage of vapor through an annular passage located therein, the upper body further comprising guiding vanes substantially equally spaced apart from each other;
- a float elastically supported by a spring and configured to move along an axial axis responsive to a buoyant force of the fluid tank;
- a base forming a bottom of the upper body, where the base is engaged with the spring and contacts the float when the float is in a lower position;
- and
- a wire loop spring engaged with an annular opening of the base outside of the annular passage and below the base, and where the spring elastically supports the float in the lower position to decrease a contact force between the float and the lower position while also being able to lift the float.
2 more elements
Dependencies are inferred from the claim text.