Patent ID: 6799733
Filing Date: 2004-10-05
Classification: F02M

Abstract:
A fuel injector having a fuel inlet, a fuel outlet, and a fuel passageway extending from the fuel inlet to the fuel outlet along a longitudinal central axis, the fuel injector comprising:a body; a needle slidingly disposed within the body between a first position and a second position; and a seat disposed at the fuel outlet, the seat including: a seat surface contiguous to a portion of the needle in the first position to form a seal between the fuel passageway and the fuel outlet, the seat surface being spaced from the portion of the needle in a second position of the needle to permit fuel flow through the fuel outlet, the seat surface being oblique to the longitudinal central axis, and a plurality of passages, each of the plurality of passages having a passage surface extending along a central axis that defines an angle of inclination relative to the longitudinal central axis, a portion of the passage surface aligned on the same line with and contiguous to the surface of the seat on a common plane such that each central axis intersects the longitudinal central axis and each other at a common point on the longitudinal central axis.