The development of an electronically controlled fuel injection system
is important to reduce the emissions and noise from the diesel engine.
In order to design a high response magnetic solenoid actuator which i
s used for the fuel injection system, an optimal design of magnetic ci
rcuit is required. In this paper, a practical software using the 3-D f
inite element method with edge element is developed. The software is a
pplied to the analysis of an actuator taking into account the eddy cur
rent and the motion of armature.