| 摘要 |
A flushable bi-fuel injector, in particular for combustion engines, comprises a nozzle body incorporating a nozzle exit (11), a movably held valve needle (12) for opening and closing the nozzle exit (11), a first supply channel (13) for supplying a first liquid or a first fuel to the nozzle exit (11); and a second supply channel (23) for supplying a second liquid or a second fuel or a liquid additive to the nozzle exit (11). A ring-shaped slide gate (21) or a ring piston is arranged in a ring-shaped chamber (20) within the nozzle body (1). The slide gate (21) can be hydraulically activated to either side via differential pressure. Depending on its position, the slide gate (21) connects either the first supply channel (13) or the second supply channel (23) to the nozzle exit (11). During operation, depending on operational requirements, either a first liquid or a first fuel or a second liquid which can be a second fuel or a starting fuel, is conveyed to a combustion chamber of an internal combustion engine, with the pressure differential between the first liquid and the second liquid causing switchover of the supply in the bi-fuel injector.
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