EINSPRITZVENTIL ZUR ZUMESSUNG VON ZWEI BRENNSTOFFEN
The invention relates to an injection valve for metering two fuels, comprising a nozzle body (1), in which a nozzle hollow needle (4) is arranged for longitudinal sliding, which nozzle hollow needle interacts with an outer nozzle seat (6) in order to open and close an injecting opening (7) for a fir...
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Zusammenfassung: | The invention relates to an injection valve for metering two fuels, comprising a nozzle body (1), in which a nozzle hollow needle (4) is arranged for longitudinal sliding, which nozzle hollow needle interacts with an outer nozzle seat (6) in order to open and close an injecting opening (7) for a first fuel. Furthermore, a nozzle needle (10) is arranged in the nozzle hollow needle (4) for longitudinal sliding, which nozzle needle interacts with an inner nozzle seat (11) formed in the nozzle hollow needle (4) in order to open and close an injection opening (12). The nozzle hollow needle (4) is guided in the nozzle body (1) in such a way that a throttle gap (9) is formed. A first pressure chamber (2) is formed between the throttle gap (9) and the outer nozzle seat (6). The first pressure chamber surrounds the nozzle hollow needle (4) and can be filled with a first fuel. A second pressure chamber (15) can be filled with a second fuel. An end region of the nozzle hollow needle (4) remote from the outer nozzle seat (6) protrudes into the second pressure chamber. A peripheral seal body (40) is formed on the nozzle hollow needle (4). Said seal body interacts with a sealing seat (44) and thereby seals off the second pressure chamber (15) in the direction toward the throttle gap (9). |
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