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1. (WO2017153173) NOZZLE ASSEMBLY FOR A FUEL INJECTION VALVE FOR INJECTING A GASEOUS AND/OR LIQUID FUEL, AND FUEL INJECTION VALVE

Pub. No.:    WO/2017/153173    International Application No.:    PCT/EP2017/054077
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: F02M 43/04
F02D 19/06
Applicants: ROBERT BOSCH GMBH
Inventors: WESSNER, Jochen
KATZ, Martin
Title: NOZZLE ASSEMBLY FOR A FUEL INJECTION VALVE FOR INJECTING A GASEOUS AND/OR LIQUID FUEL, AND FUEL INJECTION VALVE
Abstract:
The invention relates to a nozzle assembly for a fuel injection valve for injecting a gaseous and/or liquid fuel into a combustion chamber of an internal combustion engine, the assembly comprising a nozzle body (1) which forms a first valve seat (2) for a first valve needle (3) and a second valve seat (4) for a second valve needle (5) that is arranged concentrically with the first valve needle (3) and that is designed as a hollow needle. According to the invention, at least some sections of the nozzle body (1) are double-walled, in order to form an annular pressure chamber (6) which can be supplied with the gaseous fuel and in which the second valve needle (5) designed as a hollow needle is housed. In addition, the invention relates to a fuel injection valve having a nozzle assembly of this type.