Method for producing an injector

US11519373B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Thomas Stach · Northville, US
• James Doetsch · Farmington Hills, US
• Jan Tremel · Erlangen, DE
• Markus Feigl · Markgröningen, DE
• Peter Rueck · Merkendorf, DE
• Roman Poltoratski · Stuttgart, DE
• Timo Dehm · Eriskirch, DE

Key dates

• Filing date: Feb 28, 2019
• Grant date: Dec 6, 2022
• Expiry date: Feb 28, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/85
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for producing an injector which is designed in particular to inject fuel into an induction pipe or directly into a combustion chamber of an internal combustion engine. The method includes providing an injector base element, providing a rod that is insertible into a through hole of the injector base element, producing a negative matrix of a spray orifice element on an axial end of the rod, inserting the rod into the through hole of the injector base element, positioning the negative matrix situated on the rod relative to the injector base element, producing the spray orifice element having at least one spray orifice by applying a galvanization layer on a downstream end, in the injection direction, of the injector base element and on the negative matrix, and removing the rod and the negative matrix.