COMPACT INJECTOR ARMATURE VALVE ASSEMBLY

摘要

A compact injector armature valve assembly for a fuel injector (10) allowing the O-ring (16) to O-ring spacing (18) to be reduced. The armature valve assembly (52) is a cylindrical hollow magnetic piece, with a narrow necked down portion (42) to act as the receiving end for a ball (54), which is directly attached to the necked down portion. The attachment of the necked down portion by means of crimping or chemical bonding above the mid-point of the ball allows the strengths of a pivot style guidance scheme to be used.