Abstract: A fuel injection valve including a pan-shaped protective cap having a radially outwardly extending recess which, together with the fuel injection valve, forms a gap which is so narrow that it exerts a capillary effect on the fuel so that, when the internal combustion engine is shut down, the high boiling point constituents of the fuel are deposited at the radial outer edge of the gap, because of the capillary effect, and the injection openings remain free from deposits. The protective cap of the invention has at least three protrusions formed from its bottom and protruding in the direction of the fuel injection valve to a predetermined axial distance, the protrusions of the protective cap being in contact with the orifice plate of the fuel injection valve, forming an axial gap in a simple manner between the bottom and the orifice plate. The protective cap can be used with fuel injection valves of various types.

Abstract: A stop plate for assembly between a stop shoulder of a valve needle and an inner shoulder of a valve casing in known fuel injection valves. The stop plate limits the stroke of the valve needle and, between its through opening and its circumference, has an assembly slot. During the flanging of the valve casing and the high axial forces connected with this assembly a high edge pressure at the assembly slot and nonuniform deformations of the valve casing may occur. The stop plate includes at least two recesses which are formed in an upper stop face of the stop plate, the said stop face resting against the inner shoulder of the valve casing, these recesses lying symmetrically to a center line of the assembly slot and in a half of the stop plate in which the assembly slot is not formed. The recesses lead to a uniform and reduced impressing of the stop plate into the valve casing.

Abstract: The protective cap for a fuel injection valve having a recess which extends radially outwards from a through flow passage, this recess being so small that it has a capillary effect on the fuel, so that when the internal combustion engine is stopped, the fuel constituents which boil at high temperatures are deposited on the radially outer edge of the recess, due the capillary action, and the injection orifice of the fuel injection valve remains free of deposits. The protective cap can be used for different types of fuel injection valves.