Fuel injector sleeve armature
AssigneeContinental Automotive Systems US, Inc.
InventorGreg R. Morton
Life of this patent
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Abstract
A fuel injector having a housing including an inlet, an outlet, and a passageway for fuel flow from the inlet to the outlet. A coil assembly is disposed proximate the inlet. A seat is disposed proximate the outlet. A closure member is disposed in the housing and is operable by the coil assembly. The closure member includes a sleeve and an armature. The sleeve extends along a longitudinal axis and includes first and second ends, and an outer surface a first distance from the longitudinal axis. An armature is coupled to the first end of the sleeve so that the sleeve is movable with the armature. The armature includes an outer perimeter a second distance from the longitudinal axis, such that the second distance is not greater than the first distance.
Claims14
A fuel injector having a housing including an inlet, an outlet, and a passageway for fuel flow from the inlet to the outlet, the fuel injector comprising:
- a coil assembly disposed proximate the inlet of the fuel injector;
- a seat disposed proximate the outlet of the fuel injector;
- and
- a closure member disposed in the housing and operable by the coil assembly to permit and prohibit fuel flow through the seat, the closure member including:
- a sleeve extending along a longitudinal axis and having first and second ends, the sleeve including a recess and having an outer surface a first distance from the longitudinal axis;
- and
- an armature coupled to the first end of the sleeve so that the sleeve is movable with the armature, the armature having a first portion disposed in the recess of the sleeve and a second portion extending outwardly from the first end of the sleeve, the second portion having an outer perimeter a second distance from the longitudinal axis, the second distance not greater than the first distance.
Dependencies are inferred from the claim text.