Fuel injector, in particular a Piezoelectric, for an internal combustion engine with direct injection

摘要

The injector has an injector body (1) mounted in a sleeve (3) along an axial clearance (J) relative to the sleeve, which is integrated to a cylinder head (2) of an engine. The injector has a nose forming end (1a) adjacent to a combustion chamber (C) and a shoulder (1b) at its upper part. The shoulder is supported against a flange (4) integrated to the cylinder head through the action of combustion pressure (P) of the chamber on the nose forming end.