Electromagnetic fuel injector
AssigneeSiemens Automotive Corporation
InventorGerhard Mesenich
Life of this patent
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Abstract
An electromagnetic fuel injector is equipped with a flat valve seat. The injector features a parallel hydraulic guidance system for the armature which is obtained by suitably disposed hydraulic damping gaps. In addition, a method of manufacturing said hydraulic damping gaps is described.
Claims3
An electromagnetic fuel injector comprising a fuel inlet, a fuel outlet, an electromagnetic coil, an armature, and a reset spring arranged to control the passage of fuel from said inlet to said outlet, wherein said armature is radially guided mechanically and has a ball-type periphery and closes the injector by impacting a valve seat disposed centrally of the coil, characterized by the face that the injector is provided with two annular concentric raised valve seats forming a groove-type fuel collection space therebetween which is in communication with several nozzles leading to the fuel outlet.
Dependencies are inferred from the claim text.