Inventors:
Elmer Bluhm - Grandville MI
Frederick T. Vaas - Grand Rapids MI
Assignee:
General Motors Corporation - Detroit MI
International Classification:
B23P 1500
Abstract:
A method of forming an injector valve nut seal between the spray tip body and the sleeve type valve nut of, for example, a unit fuel injector, the method including the steps of fabricating an annular ring of a predetermined area in cross-section and of a suitable deformable material, positioning the seal ring to encircle the straight cylindrical portion on the lower end of the spray tip body prior to inserting this lower end of the spray tip body through the open lower end of the valve nut, securing the valve nut onto the threaded end of the body of the injector whereby as this occurs, the ring seal will be caused to move up to and be shaped to conform around the intermediate conical portion of the spray tip body and conform to the conical inner peripheral surface at the lower end of the valve nut so that the annular ring seal thus formed in place is in press fit engagement with both the outer peripheral surface of the intermediate conical portion of the spray tip body and the conical inner peripheral surface of the valve nut.