| 摘要 |
A fuel injector with a valve body having an inlet, an outlet, and an axially extending fuel passageway from the inlet to the outlet. An armature located proximate the inlet of the valve body. A needle valve operatively connected to the armature. A valve seat proximate the outlet of the valve body. A swirl generator disk located proximate the valve seat. The swirl generator disk having at least one slot extending tangentially from a central aperture. A flat guide disk having a first surface, a second surface adjacent the flat swirl generator disk, a guide aperture, and at least one fuel passage having a wall extending between the first surface and the second surface. The wall includes an inlet, an outlet, and a transition region between the inlet and the outlet that defines a cross-sectional area of the at least one passage. The transition region is provided by a surface of the wall. The surface of the wall is configured to gradually change the direction of fuel flowing from the fuel passageway of a valve body to the flat swirl generator disk so that sharp corners in the fuel flow path are minimized.
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