Fuel injection nozzles

A liquid fuel injection nozzle of the kind intended to be mounted on an internal combustion engine and through which liquid fuel can be supplied to an engine, the nozzle, comprising a body part, a seating defined in the body part, a valve member shaped for co-operation with said seating, resilient means biasing the valve member into contact with the seating to prevent the flow of liquid fuel through an outlet from an inlet, electromagnetic means which when energised, acts to reduce the force exerted by the resilient means on said valve member so that the valve member can move away from the seating under the action of fuel pressure to permit flow of fuel from the inlet to the outlet, an abutment member engaging the valve member and through which the force exerted by the resilient means acts on the said valve member, an armature forming part of said electromagnetic means, the armature including a portion engageable against said abutment member on the side thereof adjacent the valve member whereby when the electromagnetic means is energised said portion of the armature will engage said abutment member to reduce the force exerted by the resilient means on the valve member and when the electromagnetic means is de-energised the portion of the armature can separate from the abutment member, and friction means operable during separation of said portion of the armature from the abutment member to absorb the energy gained by the armature during its movement under the action of said resilient means.