Patent ID: 6390393
Filing Date: 2002-05-21
Classification: F02M

Abstract:
A fuel injector having a fuel inlet, a fuel outlet, and a fuel passageway extending along an axis between the fuel inlet and the fuel outlet, the fuel injector comprising:a body having an inlet portion, an outlet portion, and a neck portion disposed between the inlet portion and the outlet portion; an armature disposed within the neck portion of the body and displaceable along the axis relative to the body; a spring disposed within the neck portion and applying a biasing force to the armature, the spring having a downstream end disposed proximate the armature and an upstream end opposite from the downstream end; an adjusting tube disposed within the neck portion of the body and proximate to the upstream end of the spring, the adjusting tube varying the biasing force applied by the spring to the armature; and a first spring seat engaging a first one of the downstream and upstream ends, the spring seat permitting spring movement counteracting parasitic forces arising due to spring compression and extension.