High flow, tubular closure member for a fuel injector

Details High flow, tubular closure member for a fuel injector High flow, tubular closure member for a fuel injector

2005-12-27

2005-12-27

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S585300, C239S585400, C239S585500, C239S533200, C239S088000

Reexamination Certificate

active

06978950

ABSTRACT:
A fuel injector includes a housing, a passageway, a coil assembly, a seat, and a closure member. The housing extends along a longitudinal axis between an inlet and an outlet, and fuel flows through the passageway from the inlet to the outlet. The coil assembly is disposed proximate the inlet of the housing, and the seat is disposed proximate the outlet of the housing. The closure member is disposed in the housing and is movable along the longitudinal axis between a first position, which prohibits fuel flow, and a second position, which permits fuel flow. The closure member includes a magnetic member, a needle, and a tubular member. The magnetic member is adapted to cooperate with the coil assembly to move the closure member from the first position to the second position. The needle member occludes the seat in the first position of the closure member. The tubular member couples the magnetic member to the needle member, and defines a portion of the passageway. The tubular member extends between a first end, which defines a first opening, and second end, which defines a second opening. A portion of the first opening is aligned with the second opening such that fuel flow between the first and second openings is along a flow path that is parallel to the longitudinal axis.

REFERENCES:
patent: 5275341 (1994-01-01), Romann et al.
patent: 5544816 (1996-08-01), Nally et al.
patent: 5692723 (1997-12-01), Baxter et al.
patent: 5996911 (1999-12-01), Gesk et al.
patent: 6173915 (2001-01-01), Cohen et al.

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