Patent ID: 8020834
Filing Date: 2011-09-20
Classification: F02M,Y10T

Abstract:
1. A method of making a fuel injector for an internal-combustion engine, the fuel injector having an injector body, an injection-control valve and a solenoid actuator including a coil, a core, a pair of electric rod-shaped contacts and an insulating body made of insulating material to electrically insulate the core from said injector body, the method comprising: inserting the core and the coil into a mould having a cavity delimited by a surface substantially complementary to a surface delimiting said insulating body made of insulating material; injecting the insulating material into said cavity to embed at least part of said core, said coil and an intermediate stretch of each of said rod-shaped contacts to form a monolithic assembly in which said core and said coil are electrically insulated; removing said monolithic assembly from said mould; after removing said monolithic assembly from said mould, inserting said monolithic assembly into said injector body until the monolithic assembly is brought to bear upon an axial shoulder of the injector body; and blocking said monolithic assembly against said shoulder of the injector body, wherein blocking said monolithic assembly against said shoulder includes screwing a ring-nut to grip said monolithic assembly onto said injector body and setting an elastic element between said ring-nut and said monolithic assembly to obtain an elastic blocking.