Abstract: Methods and systems are provided for a vapor canister couple to a fuel tank of a vehicle. A series of fluidically coupled, variable capacity bleed elements, externally coupled to a sidewall of the vapor canister, capture the bleed emissions resulting from desorption of fuel vapors from an adsorbent material inside the vapor canister. The series of bleed elements may be fluidically coupled through flow paths passing through the vapor canister wall, connecting through a first flow path to a chamber inside the vapor canister and connecting through a second flow path to a vent port of the vapor canister.
Type:
Grant
Filed:
January 21, 2016
Date of Patent:
July 10, 2018
Assignee:
Ford Global Technologies, LLC
Inventors:
Chuck Frank Bartus, Dennis Lowe, David Ballheim, Floyd Leon Bergeron, John Felecan, Dawn Woodring, Todd Blankenship, Robert Joseph Pyle, Dwayne Pollitt