Solenoid of unit injector for diesel engine

摘要

This paper relates to a solenoid controlling an actuator of a needle valve in a fuel injection device for a diesel engine. In particular, the cross section of the solenoid is made circular to increase the suction force.;The c-type iron core, which becomes thicker from the inner side to the outer side of the center pole, is radially overlapped to form a core having a circular cross section, and a coil is wound around the inner recess.