Patent ID: 8839765

Claim:
An apparatus for injecting fuel into the combustion chamber of an internal combustion engine comprising a control chamber, an armature chamber, an armature, a valve-closing and valve-opening member that is coupled to said armature, a valve seat, an injection nozzle having a port at one end and an axially displaceable nozzle needle so that said needle is displaceable in an axial direction in response to a pressure present in the control chamber, the axial direction being along a longitudinal axis of the injection nozzle, so as to control opening and closing of the port of the injection nozzle, a solenoid valve for opening or closing an inlet or outlet duct for fuel, a magnetic coil that cooperates with the armature and the valve-closing member so that the valve-closing member can be pressed against the valve seat, said armature being disposed in the armature chamber into which the inlet or outlet duct for fuel opens, said magnetic coil having an end that faces the armature chamber, and a metal protective plate ( 30 ) for preventing cavitation erosion of the magnetic coil, said metal plate being on a side of the armature chamber so as to cover the end of the magnetic coil that faces the armature chamber.