An injection valve arrangement for a high-pressure injection of liquid fuel into a working chamber of an internal combustion engine with the arrangement including at least one valve needle which is urged by a spring force in a closing direction so that a pair of sealing cones associated with the valve needles are brought into engagement with a pair of separate valve seats.Bellows Seal Valves The valve needle is liftable in a direction opposite a flow direction effective in the injection process by hydraulic pressure of the fuel to be injected. Pressure chambers having a diameter larger than the respective valve seats are provided and communicate by way of appropriate ducts which merge to form a common flow cross-section.Needle Valves At least two separate line connectors are provided for receiving separate fuels and/or fuel components with the line connectors directing the fuels and/or fuel components to the respective pressure chambers.MULTI-FUNCTIONAL WATER PUMP CONTROL VALVE An injection valve for high-pressure injection of liquid fuel into a working chamber means of an internal combustion engine, the injection valve comprising a pair of axially spaced pressure chamber means for accommodating a quantity of liquid fuel, means for communicating said pressure chamber means with each other, and means for controlling the communication between the spaced pressure chamber means and between the injection valve and the working chamber means including first and second valve seat means, a valve needle means having a pair of valve sealing means adapted to cooperate with the respective valve seat means, and means for normally biasing said valve needle means in a closing direction such that the sealing means are forced into engagement with the respective valve seating means, the valve needle means being adapted to be displaced in an opening direction opposite the flow direction effective in an injection process by hydraulic pressure of the liquid fuel to be injected such that the pressure chamber means are in communication with each other, characterized in that separate line means are provided for connecting the injection valve with two separate sources of liquid fuel, separate means are provided for communicating each of the pressure chamber means with only one of the connecting line means, the valve needle means includes two valve needles disposed concentrically with respect to one another and being mounted so as to execute a definite relative movement with respect to each other, said two valve needles forming an inner valve needle and an outer valve needle, the biasing means are constructed so that an opening pressure of the outer valve needle is less than an opening pressure of the inner valve needle, the inner valve needle includes an end portion projecting outwardly from an open end of the outer valve needle in a sealing manner, and in that the two pressure chamber means form an upper and lower pressure chamber means, a bore means being interposed between the upper and lower pressure chamber means for centrally guiding in a sealing manner the outwardly projecting end portion of the inner valve needle through one of the valve seat means to the lower pressure chamber means and the other valve seat means associated with the inner valve needle.

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