US 11,933,251 B2
Fuel system fuel vapor recirculation system and method
Aed M. Dudar, Canton, MI (US); Arman Ashrafi, Dearborn Heights, MI (US); Scott Alan Bohr, Novi, MI (US); Dwayne Pollitt, Novi, MI (US); and Robert Murray, Lake Orion, MI (US)
Assigned to FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed by FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed on Jul. 20, 2022, as Appl. No. 17/869,409.
Prior Publication US 2024/0026843 A1, Jan. 25, 2024
Int. Cl. F02M 25/08 (2006.01)
CPC F02M 25/089 (2013.01) [F02M 25/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a fuel tank having a fuel inlet opening and a filler neck through which fuel is dispensed into the fuel tank; and
a check valve disposed in the fuel inlet opening, wherein the check valve is closed and adapted to be opened when fuel is dispensed into the fuel tank, and wherein the check valve has a vent hole that is always open.