US 11,835,018 B2
Magnetically latching valve for fuel vapor management systems and systems incorporating same
Kevin W. Lucka, Southfield, MI (US); Donald P. Tinsley, III, Huntington Woods, MI (US); Matthew C. Gilmer, South Lyon, MI (US); and James H. Miller, Ortonville, MI (US)
Assigned to Dayco IP Holdings, LLC, Roseville, MI (US)
Filed by DAYCO IP HOLDINGS, LLC, Troy, MI (US)
Filed on Sep. 3, 2021, as Appl. No. 17/446,842.
Claims priority of provisional application 63/075,228, filed on Sep. 7, 2020.
Prior Publication US 2022/0074370 A1, Mar. 10, 2022
Int. Cl. F02M 25/08 (2006.01); F02M 35/10 (2006.01); F16K 31/06 (2006.01); F16K 31/08 (2006.01); F02B 37/16 (2006.01)
CPC F02M 25/0836 (2013.01) [F02B 37/16 (2013.01); F02B 37/162 (2019.05); F02M 35/10222 (2013.01); F16K 31/0675 (2013.01); F16K 31/082 (2013.01); F02M 2025/0845 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system for refueling a vehicle having an internal combustion engine, the system comprising:
a fuel tank in fluid communication with a filling tube;
a fuel vapor canister in fluid communication with the fuel tank;
a magnetic latching valve having an inlet port in fluid communication with the fuel tank and an outlet port in fluid communication with the fuel vapor canister, the magnetic latching valve comprising:
a main housing consisting of a base and a cover mated with a fluid tight seal and defining a chamber in fluid communication with the inlet port and the outlet port, wherein the base comprises a solenoid housing seated therein and mated thereto;
a solenoid seated within the solenoid housing, the solenoid having a first end and a second end;
a stop positioned proximate the first end of the solenoid;
a linearly translatable armature seated within the solenoid, the armature having a first end mateable with the stop and having a second end connected to a poppet valve, wherein the armature is commandedly moveable between an open position in which the first end of the armature is against the stop and a closed position, respectively, after a pulse of voltage to the solenoid;
a permanent magnet fixedly seated within the housing, wherein the permanent magnet is juxtaposed to the stop to magnetically latch and hold the armature in the open position; and
a spring seated around the connection of the armature to the poppet valve with a first end of the spring against the poppet valve and a second end of the spring against the main housing, wherein the spring biases the poppet valve closed when the armature is in the closed position and the spring is configured to be mechanically openable by fuel vapor pressure to prevent fuel tank rupture;
wherein the solenoid is configured to be off after the armature is linearly translated to either of the open position or the closed position;
a controller in operative communication with the magnetic latching valve;
a tank pressure control valve positioned in a bypass loop around the magnetic latching valve;
an intake manifold of the internal combustion engine in fluid communication with the fuel vapor canister via a conduit connecting the fuel vapor canister to the intake manifold;
a turbocharger or supercharger upstream of the intake manifold;
a Venturi device in a bypass around the turbocharger or supercharger, wherein the Venturi device has a suction port in fluid communication with the fuel vapor canister; and
a canister purge valve controlling fluid communication between the fuel vapor canister and the intake manifold;
wherein the suction port of the Venturi device is upstream of the canister purge valve relative to the canister purge valve's position in the conduit between the fuel vapor canister and the intake manifold;
wherein the controller opens the magnetic latching valve during vehicle refueling and closes the magnetic latching valve during normal operation.