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 axis. The fuel injector includes a body, a needle slidingly disposed within the body and a seat disposed at the fuel outlet. The seat has a plurality of passages, each of the plurality of passages having a central axis having an angle of inclination relative to the longitudinal axis.

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 axis. The fuel injector includes a body, a needle slidingly disposed within the body and a seat disposed at the fuel outlet. The seat has a plurality of passages, each of the plurality of passages having a central axis having an angle of inclination relative to the longitudinal axis.

Abstract: A fuel injector is disclosed. The fuel injector has an upstream end, a downstream end, and a longitudinal axis extending therethrough. The fuel injector also has a body and a cylindrical needle. The needle is reciprocably located within the body between an open configuration adapted for permitting delivery of fuel from the downstream end and a closed configuration adapted for preventing delivery of the fuel from the downstream end. The fuel injector further includes a seat disposed proximate the downstream end. The seat includes a sealing surface engageable with the needle when the needle is in the closed configuration. The sealing surface has a seating diameter. The seat also includes a seat opening extending therethrough along the longitudinal axis. The seat opening has an opening diameter such that a ratio between the opening diameter and the seating diameter is less than 0.6. A method of generating turbulent flow in a fuel injector is also provided.

Abstract: An improved atomization fuel injector for an internal combustion engine includes an armature assembly including an injector needle reciprocable between a closed position and an open position; a needle seat for receiving the injector needle in the closed position, the needle seat including a central opening therethrough; an exit orifice disk disposed downstream of the needle seat; and an impinging jet atomizer disposed upstream of the exit orifice disk. A method of improving atomization of fuel in fuel injectors includes providing a fuel injector; adding fuel to the fuel injector; passing the fuel through a central opening in a seat of the fuel injector; separating the fuel into at least two channels; and directing at least two channels of fuel towards one another such that the channels of fuel collide with each other.