Kombiniertes hub-/druckgesteuertes Kraftstoffeinspritzverfahren und -system für eine Brennkraftmaschine

摘要

The invention relates to a method for injecting fuel with at least two different fuel pressures via injectors (80) into the combustion chamber of an internal combustion engine. According to the inventive method, the fuel with the lower fuel pressure is injected in a stroke-controlled manner and the fuel with the higher fuel pressure is injected in a pressure-controlled manner. For a pre-injection and/or post-injection and/or for an injection in a boat-shaped injection cone of a fuel with the lower fuel pressure the control chamber (24) and the nozzle room (11) via a non-return valve (81) are connected to a low-pressure fuel supply. For a main injection with the higher fuel pressure the nozzle chamber (11) is connected to the high-pressure fuel supply.