Patent ID: 6443132
Filing Date: 2002-09-03
Classification: F02M

Abstract:
An internal combustion engine fuel injector comprising a hollow body (6) housing a fuel metering valve (19); and a support (37) connected to said hollow body (6) and housing an electromagnet (34) controlling an armature (35) in turn controlling said valve (19); said valve (19) closing a control chamber (28) on which high-pressure fuel acts; said valve (19) normally being closed by a closing spring (42) acting on said armature (35) and which overcomes the action of the fuel in said control chamber (28); and said valve (19) being opened when said electromagnet (34) activates said armature (35) to overcome the action of said closing spring (42); characterized in that said armature (35) is fitted inside said hollow body (6) by means of a leaf spring hinge (44) comprising a first portion (46) fixed between said hollow body (6) and said support (37), and a second portion (47) fixed to said armature (35).