Rapid transient electroinjector

摘要

An electromagnetically actuated fuel-injector for an internal combustion engine is disclosed, in which the core (15) of the coil (16) for the cuplike valve member (37) intended reciprocably to control the fuel-injecting nozzle (48) is provided with longitudinally arranged radial bores (35) in order to minimize the detrimental effects of eddy currents. Longitudinal slots (52) can be provided in said coil core according to an alternative embodiment.