Fuel injection valve for internal combustion engine, preferably for high jet speeds, has spray channels with cross-sections that expand after jet hole

摘要

The device has an axially guided valve element (3) opened hydraulically against a closing force with a conical sealing surface that interacts with a conical valve seat surface and hydraulic connections from the pressure chamber to spray channels (7a,7b) controlled by the valve element. The cross-section of the spray channels reduces conically from the incident cross-section and expands markedly after the jet hole.