Single pole solenoid assembly and fuel injector using same

A single pole solenoid assembly comprising:

• a body;
• a stator in a fixed position relative to said body;
• a coil attached to said stator;
• an armature having a centerline and being positioned adjacent said stator;
• a magnetic flux ring having a central axis and an interior surface at least partially surrounding said armature;
• said stator, said armature and said magnetic flux ring are positioned and arranged such that magnetic flux lines generated by said coil pass between said stator and said magnetic flux ring through said armature;
• said central axis and said centerline being concentrically coupled via an interaction between said magnetic flux ring and said armature via said body.

A solenoid controlled valve assembly comprising:

• a valve body having a conical valve seat;
• a valve member positioned in said valve body;
• a single pole solenoid attached to said valve body and including a stator, a magnetic flux ring with a central axis and an armature with a centerline attached to said valve member;
• said armature being movable between a first position in which said valve member is in contact with said valve seat and a second position in which said valve member is out of contact with said valve seat;
• and
• said central axis and said centerline being concentrically coupled via an interaction between said magnetic flux ring and said armature via said valve body.