Piezo inline injector for internal combustion engine, has fuel from high pressure area, where pressure energy is converted into peripheral speed and injected with axial component overlaid by central spraying hole as jet cone

摘要

The injector has fuel from the high pressure area (5a), which flows over tangential inlet slots (48) at the nozzle needle point into a spin chamber (49) by opening of the nozzle needle (47), and convert the pressure energy into peripheral speed and injected with an axial component overlaid by a central spraying hole (50) as jet cone (51). An amount of fuel is led in the spin chamber by the rotating liquid in the direction of flow and injected into spraying holes (61). The spraying holes are arranged at the extent of the spin chamber in the range of the needle seat face (58).