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1. (WO2013111007) DEVICE FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2013/111007    International Application No.:    PCT/IB2013/000208
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Fri Jan 18 00:59:59 CET 2013
IPC: F02M 55/00
Applicants: ROBERT BOSCH GMBH
Inventors: SCHNEDT, Johannes
Title: DEVICE FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE
Abstract:
The invention relates to a device for injecting fuel into the combustion chamber of an internal combustion engine, comprising at least one injector (1) that has: a high-pressure accumulator (6), which is integrated into the injector body, an injection nozzle (2) that has a nozzle needle (15) which is guided in an axially movable manner and which is surrounded by a nozzle chamber (19), a high-pressure bore (8) that connects the high-pressure accumulator (6) to the injection nozzle (2), and a resonator bore (20), connected in parallel to the high-pressure line (8), that is connected to the injection nozzle (2) and opens into the high-pressure accumulator (6) via a resonator throttle (21). The high-pressure bore (8) comprises a first section (8') adjoining the high-pressure accumulator (6) and a second section (8'') opening into the injection nozzle (2), the first section (8') having a greater flow cross-section than the second section (8'').