Fuel injector i.e. common rail injector, for combustion chamber of diesel engine, has sleeve or disk applying spring force along axial direction and penetrated into valve element, where sleeve or disk has borehole to form closing throttle

摘要

The injector (1) has an axially adjustable injection valve element (2) with a combustion chamber-sided end section (13) projected into a nozzle chamber (12). Fuel is injected into the nozzle chamber via a closing throttle (9), and a sleeve (11) or disk applies spring force along axial direction and penetrates into the injection valve element. The sleeve or disk has a throttle borehole (10) e.g. radial borehole or diagonal borehole, for forming the closing throttle. A pressure chamber (14) is hydraulically connected with the nozzle chamber by the closing throttle.