Patent ID: 7617605
Filing Date: 2009-11-17
Classification: B23K,F02M,Y10T

Abstract:
1. A method for forming a fuel injector having a fuel inlet, and fuel outlet and a fuel passageway extending from the fuel inlet to the fuel outlet along a longitudinal axis, the method comprising the steps of: constructing a first fuel injector component comprising a radially outwardly facing annular surface; constructing a second fuel injector component comprising a radially inwardly facing annular surface; shaping at least one of the annular surfaces to form, when the surfaces overlap, a non-contact region having a gap between the surfaces, and a press-fit region where the first and second surfaces are in contact, the non-contact and press fit regions being adjacent; assembling the first and second components by overlapping the annular surfaces; and welding the annular surfaces together in the non-contact region to form an annular weld bead, the weld bead and the press-fit region bounding a substantially sealed and remaining portion of the gap.