Purge valve including a dual coil permanent magnet linear actuator

A purge valve for a fuel system including an intake manifold of an internal combustion engine and a fuel tank in vapor communication with a fuel vapor collection canister, the purge valve comprising:

• an aperture defining a portion of a vapor flow path extending between first and second ports, the first port communicates vapor with the fuel vapor collection canister, and the second port communicates vapor with the intake manifold;
• a member being displaced between first and second configurations with respect to the aperture, the member in the first configuration occludes the aperture and vapor flow along the vapor flow path is substantially prevented, and the member in the second configuration is spaced from the aperture and vapor flow along the vapor flow path is permitted;
• and
• an actuator displacing the member between the first and second configurations, the actuator including:
• a stator including first and second windings spaced along an axis;
• and
• an armature being coupled to the member and being displaced along the axis, the armature including a permanent magnet axially positioned at least partially between the first and second windings, wherein the stator includes a sleeve extending longitudinally along the axis and being located radially between the armature and the first and second windings, the sleeve guiding the armature relative to the stator.

A purge valve for a fuel system including an intake manifold of an internal combustion engine and a fuel tank in vapor communication with a fuel vapor collection canister, the purge valve comprising:

• an aperture defining a portion of a vapor flow path extending between first and second ports, the first port communicates vapor with the fuel vapor collection canister, and the second port communicates vapor with the intake manifold;
• a member being displaced between first and second configurations with respect to the aperture, the member in the first configuration occludes the aperture and vapor flow along the vapor flow path is substantially prevented, and the member in the second configuration is spaced from the aperture and vapor flow along the vapor flow path is permitted;
• and
• an actuator displacing the member between the first and second configurations, the actuator including;
• a stator including;
• first and second windings spaced along an axis,
• first and second ferrous pole pieces associated respectively with the first and second windings, and
• a non-ferrous spacer interposed axially between the first and second windings;
• and
• an armature being coupled to the member and being displaced along the axis, the armature including a permanent magnet axially positioned at least partially between the first and second windings.