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1. (WO2017153170) NOZZLE ASSEMBLY FOR A FUEL INJECTION VALVE FOR INJECTING A GASEOUS AND/OR LIQUID FUEL, AND FUEL INJECTION VALVE

Pub. No.:    WO/2017/153170    International Application No.:    PCT/EP2017/054046
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
F02M 45/08
F02M 55/00
Applicants: ROBERT BOSCH GMBH
Inventors: STUKE, Bernd
OHLHAFER, Olaf
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) with a guide section (2), via which a first injection valve member (3) is reciprocatingly movably guided. The guide section (2) separates a first pressure chamber (4), which can be supplied with the gaseous fuel, from a second pressure chamber (5), which can be supplied with the liquid fuel, the first injection valve member (3) running though said chambers. According to the invention, a reciprocatingly movable sealing disk (6) is accommodated in the second pressure chamber (5), the disk being axially spring-biased towards a sealing surface (8) formed on the outer circumference of the first injection valve member (3) by means of a resilient sleeve-type sealing element (7), one side of which is fluid-impermeably connected to the sealing disk (6) and the other side of which is fluid-impermeably connected to the nozzle body (1). In addition, the invention relates to a fuel injection valve having a nozzle assembly of this type.