US 11,719,198 B1
Methods and systems for fuel system
Aed Dudar, Canton, MI (US); Scott Bohr, Novi, MI (US); and Matthew Werner, Kenockee Township, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Aug. 2, 2022, as Appl. No. 17/816,846.
Int. Cl. F02M 25/08 (2006.01)
CPC F02M 25/0836 (2013.01) [F02M 25/089 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for an evaporative emission control (EVAP) system, comprising:
flowing vapors to canisters in parallel outside of a purging event and a refueling event;
during a vehicle shut-off event not comprising the refueling event, flowing vapors to the canisters in series with a less loaded canister downstream of a more loaded canister.