Patent ID: 7370816
Filing Date: 2008-05-13
Classification: F02M

Abstract:
1. A fuel injector comprising: a tube member including an inside bore for passage of a fuel; a valve seat provided in a downstream end portion of the tube member; a valve element arranged to slide axially in the tube member to and away from the valve seat; a plurality of plate portions provided in the valve element and arranged to slide on an inside circumference surface of the tube member, the plate portions projecting radially with respect to an axis of the tube member, each of the plate portions including a side surface extending along the axis of the tube member; a drive section to move the valve element to and away from the valve seat; a nozzle member including an injection hole located on an inner side of the valve seat within the tube member and arranged to inject the fuel allowed to pass through a clearance formed between the valve element and the valve seat; and a guide portion to bend the flow of the fuel allowed to flow along the plate portions, toward the axis of the tube member and thereby to guide the fuel to the injection hole.