F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
F02M 51/00 (2006.01) F02M 51/06 (2006.01) F02M 61/16 (2006.01) F02M 61/18 (2006.01)
Patent
CA 2099708
ELECTROMAGNETIC FUEL INJECTOR WITH STAMPED DISK VALVE SEAT ABSTRACT OF THE DISCLOSURE An electromagnetic fuel injector having a housing with a solenoid disposed therein. The solenoid operates an armature valve member relative to a valve seat in a valve seat disk to meter fuel through said valve seat and to the orifices of an orifice director plate disposed below the valve seat disk. The valve seat disk is constructed of a thin sheet material which is punched to form a fuel passage therethrough. The punching operation results in a raised annular ridge about the perimeter of the passage. The raised annular ridge forms a valve seat which may be further reduced in height by machining. The machining has the additional benefit of placing a valve seating surface on the valve seat for fluid tight sealing with the valve member. A fuel injector having a valve seat disk constructed using this method will have a reduced sac volume between the valve seat and the orifices of the orifice director plate resulting in improved injector performance.
General Motors Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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