ELECTROMAGNETIC FUEL NOZZLE Russian patent published in 1999 - IPC

FIELD: mechanical engineering; fuel devices of internal combustion engines. SUBSTANCE: nozzle has outer case, coil, shutoff member, seat, stop, core made in form of cylinder with inner stepped bore, hollow armature placed in core bore and rigidly connected with shutoff member engaging with seat, resilient member placed in armature space for pressing shutoff member to seat. Guide bushing is introduced into design of nozzle. Guide bushing is made of antifriction wear-resistant material and is placed in armature space. Stop is provided with step and is axially extended into armature space. Guide bushing is arranged between stop and armature and is pressed to armature stop by resilient member. EFFECT: simplified design of nozzle, enhanced manufacturability, and dynamic characteristics and increased service life. 5 cl, 2 dwg