Abstract: A fuel injection arrangement for internal combustion engines, having a high-pressure fuel pump driven by the engine. The high-pressure fuel pump fills a pressure reservoir chamber with fuel at high pressure which chamber in turn communicates via injection lines with injection valves that protrude into the combustion chamber of the engine to be supplied. For free choice of the injection pressure at the injection valves independently of the rpm, the proposed system operates with two pressure levels. The higher pressure level is the maximum pressure in the pressure reservoir chamber, which via a connecting line that can be opened by means of a connecting valve communicates with a pressure chamber that builds up a second pressure level, and from that chamber the injection lines lead away in turn. The pressure chamber can also be rapidly pressure-relieved via a relief line that has a magnet valve.

Abstract: A fuel injection device for internal combustion engines having a high pressure fuel pump driven by the engine. The pump supplies high pressure fuel to a pressure storage chamber, which chamber, for its part, communicates with injection valves that protrude into the combustion chamber of the engine to be supplied. To achieve precise control of the injection times and injection quantities, the injection valve is directly triggered by a magnet valve, to which end the valve needle of the injection valve is embodied as the valve member of the magnet valve. In order to be able to precisely control very small injection quantities and times (for example pre-injection), the adjusting forces of the valve needle are minimized, to which end the valve needle is pressure balanced in every operating state of the injection valve by directing the high fuel pressure after the start of the valve needle opening stroke also onto the face end of the valve needle remote from the valve needle seat.