Fuel injector armature permitting fluid and vapor flow
AssigneeSiemens Automotive Corporation
InventorAnn Marie Kreutziger
Life of this patent
Estimating the term…
Abstract
A fuel injector including a tube assembly having a longitudinal axis extending between a first end and a second end, a seat secured at the second end of the tube assembly and defining an opening. An armature assembly is movable along the longitudinal axis between first and second positions with respect to the seat. The armature includes a first set of passages permitting fluid flow therethrough and a second set of passages permitting vapor flow therethrough. Additionally, a method of dissipating fuel vapors in a fuel injector includes providing the armature with a first set of passages permitting fluid flow therethrough and a second set of passages permitting vapor flow therethrough.
Claims12
An armature assembly for a fuel injector, the armature moving along a longitudinal axis between first and second positions with respect to a seat having an opening, the armature assembly is spaced from the seat such that fuel flow through the opening is permitted in the first position and the armature assembly contiguously engages the seat such that fuel flow through the opening is prevented in the second position, the armature assembly comprising:
- a first set of passages permitting a first fluid flow in a first direction generally along the longitudinal axis;
- and
- a second set of passages permitting a second fluid flow in a second direction generally along the longitudinal axis, the second direction being generally opposite to the first direction when placed in the fuel injector.
Dependencies are inferred from the claim text.