Patent Number: 6,168,095

Title: Fuel injector for an internal combustion engine

Abstract: A fuel injector for internal combustion engines, with a nozzle body in which a valve needle with a sealing face is movably supported. The sealing face of the valve needle comes into contact with a valve seat face that is adapted to the sealing face and is formed on an inner wall region of an end cup of the nozzle body. At least one injection opening is provided in the valve seat face, wherein both the inner wall region with the valve seat face of the nozzle body disposed on it and an outer wall region are hardened. The nozzle body is comprised of a rustproof martensitic steel that is hardened by means of case hardening with nitrogen.

Inventors: Seitter; Max (Muehlacker, DE), Muehleder; Friedrich (Muehlacker, DE)

Assignee: Robert Bosch GmbH

International Classification: F02M 61/00 (20060101); F02M 61/16 (20060101); F02M 61/18 (20060101); F02M 061/00 ()

Expiration Date: 01/02/2018