Fuel injector for internal combustion engines has control space (CS) linked to high-pressure side with injector needle movement controlled by its pressure and a control valve to block/open a link between the CS and lower-pressure side

摘要

A control valve (6) has a control sleeve (10) with balanced force to move between two valve positions, to block a connection between a connecting channel (14) coming from a control space (2) and running into a pressurized space (15) and a low-pressure side (7) in its closed position and to release this connection in its valve position opened and pushed towards an injector needle (3).