The coil for the fuel injector where small diameter was welded

摘要

(57) Abstract The fuel inflow tube of the top feed die fuel injector (12), at the vicinity of the inflow destal, the tubular non ferromagnetic shell (26) has had the laser bigger major diameter than the destal of the opposite side which was welded (80). The framework body of the coil (46) the perforation hole which is provided (84), small diameter partition (90) with big diameter partition (88) with we have possessed, big diameter partition small diameter partition compared to is laid out in the vicinity of the entrance of the fuel inflow tube. Big diameter partition of the perforation hole of the framework body (88) with big major diameter partition of the fuel inflow tube (82) with, between production process, canning the join section which to the position where it is possible laser welding the shell to the inflow tube, the coil assembly the fuel inflow tube (12) it was possible in axis direction, to lay out, in order after that the laser was welded, in order to be able to lay out the coil assembly, is, it is to be piled up mutually with axis direction.