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US 2001/0054656 A1Published application
Plug pin for an internal combustion engine fuel injector nozzle
AssigneeC.R.F. Societa Consortile per Azioni
InventorMario Ricco
Life of this patent
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Abstract
The nozzle has a conical wall with injection orifices; the pin has a tip activated by an axial force to engage the wall and close the orifices; the tip has a truncated-cone-shaped portion having an outer surface which rests entirely on the wall, possibly as a result of elastic deformation of the outer surface; and the outer surface forms with the wall a substantially zero angle with a tolerance of 0′ to ±10′.
Claims7
A plug pin for an internal combustion engine fuel injector nozzle, wherein said nozzle (8) has a conical wall (13) with orifices (17) for injecting fuel;
- said pin (27) comprising a tip (38) for closing said orifices (17);
- an axial force acting on said pin (27) to cause said tip (38) to engage said wall (13) at a portion (16) adjacent to said orifices (17);
- and the pin being characterized in that said tip (38) comprises a truncated-cone-shaped portion (41) having an outer surface (45) resting entirely on said wall (13).
Dependencies are inferred from the claim text.