Fuel injector having a ball seat with multiple tip geometry

Abstract

The present invention provides 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 axis. The fuel injector includes an armature disposed within the body, a cylindrical needle operatively connected to the armature, the needle having a support portion and a flow control portion, and a seat disposed at the fuel outlet. The fuel injector also includes a ball operatively connected to the support portion of the needle such that the flow control portion protrudes from the ball toward the seat.

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