Patent ID: 6676046
Filing Date: 2004-01-13
Classification: F02M,Y10S

Abstract:
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 unitary strap member extending along a longitudinal axis and having at least two projections and a central member defining an annulus having a concave surface facing the inlet about the longitudinal axis, the at least two projections having a first end extending from the concave surface of the annulus toward a second ends along the longitudinal axis, the at least two projections defining a first perimeter at the largest cross-sectional area of the projections about the longitudinal axis, the at least two projections being spaced apart about the longitudinal axis by openings extending along the length of each of the projections between the first end and second end; a sealing member coupled to the central member, the sealing member having a portion surrounded by the concave surface of the annulus, the sealing member defining a second outermost perimeter at the largest cross-sectional area about the longitudinal axis being less than the first perimeter; and an armature member coupled to the second ends of the strap member.