Electromagnetic fuel injection valve

Abstract

In an electromagnetic fuel injection valve including a magnetic coil housing () having a coil assembly () housed therein, the coil housing () includes the first and second coil housing half bodies () whose cross sections are each shaped like an inferior arc, and which are oppositely disposed so as to interpose the coil assembly () and a coupler (), each of the coil housing half bodies () includes: a barrel portion () for covering an outer peripheral surface of the coil assembly (); a front-end wall portion () and a rear-end wall portion () which are in contact with front-end and rear-end surfaces of the coil assembly (); a front connection cylindrical portion () welded to the outer peripheral surface of the magnetic cylindrical body (); and a rear connection cylindrical portion () welded to the outer peripheral surface of the fixed core (); both the coil housing half bodies are formed symmetrically; and one half part and the other half part of each of the coil housing half bodies () in an axial direction are formed symmetrically. Thus, it is possible to provide an electromagnetic fuel injection valve which enables the coil housing to be formed from two identical components, and is inexpensive and good in assembling efficiency, as well as has a better magnetic efficiency.