Fuel injector

Details Fuel injector Fuel injector

2005-08-30

2005-08-30

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S585500, C239S533200, C239S533300

Reexamination Certificate

active

06935582

ABSTRACT:
A fuel injector includes a magnetic coil, which cooperates with an armature which, together with a valve needle acted upon by a restoring spring, forms an axially movable valve part. A valve-closure member which forms a sealing seat together with a valve-seat member, is provided at the valve needle. Furthermore, the fuel injector includes an inner pole and an outer pole which form a magnetic circuit together with the magnetic coil, and a central fuel supply. A sleeve is situated in the central fuel supply of the fuel injector in such a way that a flow route of the fuel through the fuel injector is formed such with respect to length and diameter that the frequency of natural oscillations which are excited by the fuel flowing through the fuel injector, is adjusted to the closing intervals of the fuel injector.

REFERENCES:
patent: 4111365 (1978-09-01), Kimbara
patent: 32 30 843 (1984-02-01), None
patent: 196 26 576 (1998-01-01), None
patent: 196 50 865 (1998-06-01), None
patent: 197 01 879 (1998-07-01), None
patent: 198 26 011 (1998-12-01), None
patent: 0 780 569 (1997-06-01), None

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