ELECTROMAGNETIC FUEL INJECTOR WITH HYDRAULIC BRAKING DEVICE

摘要

A fuel injector (1) comprising: an injection nozzle (3); an injection valve (7) provided with a mobile plunger (17); an electromagnetic actuator (8) to move the plunger (17) between a closing position and an opening position of the injection valve (7); a hydraulic braking device (31), which is coupled to a supply hole (30) of a mobile armature (9) of the electromagnet (8), is provided with a valve element (32) which is coupled to the supply hole (30) of the mobile armature (9) and has an elastic blade (33) which is partially fixed to a surface (34) of the mobile armature (9), and is provided with a stop element (36), which is coupled to the elastic blade (33) and is arranged at a given distance from the elastic blade (33) to stop an opening movement of the elastic blade (33) itself in a fixed, predetermined position.