| United States Patent | 6,434,822 |
| Perry , et al. | August 20, 2002 |
A method of assembly of a fuel injector having a valve plunger reciprocable in a guide tube for movement from a closed position engaging a valve seat to an open position engaging a valve stop by energizing of a solenoid coil to move the plunger against a biasing spring, wherein the method includes setting the valve stop at a position effective to establish the desired valve stroke, and fixing the valve stop to the guide tube by first laser spot welding the valve stop in the guide tube to fix the position of the valve stop without changing the set gap, and then laser seam welding the valve stop in the guide tube at an axial location beyond the spot welds, relative to a plunger-engagable end of the valve stop, to provide a hermetic seal around the valve stop.
| Inventors: | Perry; Robert B. (Leicester, NY); Haltiner, Jr.; Karl Jacob (Fairport, NY); Molnar; James Robert (Penfield, NY) |
| Assignee: | Delphi Technologies, Inc. (Troy, MI) |
| Appl. No.: | 660772 |
| Filed: | September 13, 2000 |
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