A process for the coaxial connection of precision-made articles, which consists of a plurality of parts, a method for assembling fuel injection nozzles and the fuel injector

摘要

A fuel injection nozzle, wherein a swirler and a plate are press-fitted into the inner diameter part of a nozzle of a fuel injection nozzle so that the swirler is held between the seat part of the nozzle and the plate, the seat part of the nozzle is centered with the inner diameter part of the swirler by a positioning pin, and the plate is allowed to plastically flow in part so as to fixedly connect the nozzle and swirler to the plate, whereby the precision of the parts, as a single part, of the nozzle of the fuel injection nozzle is not affected and the same concentricity can be maintained after the connection of the parts.