Abstract: A fuel injector. In one embodiment, the fuel injector includes an inner housing having an outlet port and a flow passage therein which is in fluid communication with the outlet port. The flow passage has a tapered end portion and a constant and continuous cross-section for the remaining length thereof. The fuel injector may also include a valve stem movably received in the flow passage. The valve stem has a cross-section conforming in shape to the passage, and the valve stem is selectively movable between a closed position wherein the valve stem blocks the outlet port and an open position. The fuel injector may also include an electrical coil assembly removably affixed to the inner housing.

Abstract: A valve that is well-suited for controlling the injection of fuel into an engine. The valve may include an inner housing that includes a movable valve stem and that is removably attachable to an engine. An electrically-actuatable coil assembly is removably attached to the inner housing of the valve for selectively moving the valve stem within the inner housing to permit fuel to pass through the valve into the engine upon an application of an electrical current to the electrically actuatable coil.