FUEL INJECTION VALVE FOR ENGINE

摘要

PURPOSE: A fuel injection valve for an engine is provided to arrange a plurality of injection channels same as the number of the fuel injection valves around the periphery of the fuel injection valve and to generate eddy currents at all injection channels. CONSTITUTION: A fuel injection valve for an internal combustion engine has a valve body(1) having a bore with a vertical axis(4), wherein the end of the bore at the combustion chamber side is restricted by a valve seat(5). At least one inlet opening(107) of injection channels(7) opened into the combustion chamber of the engine is disposed at the valve seat. A valve needle(10) is arranged in the bore to vertically displace and provided to control fuel inflow to the injection channel by a valve sealing surface in cooperation with the valve seat to control a ring gap(17) to open when the valve needle is lifted from the valve seat to flow the fuel into at least one injection channel through the ring gap. The width of the ring gap is not same as the total periphery of the valve body.