Patent ID: 6497128
Filing Date: 2002-12-24
Classification: B21D,F02M,Y10T

Abstract:
A method of manufacturing a fuel rail for use in a fuel delivery system for an engine comprising the steps of:(a) providing a hydroforming apparatus including a pair of die sections defining a die cavity; (b) disposing a workpiece within the die cavity; (c) hydroforming a first portion of the workpiece so as to conform with the shape of a first portion of the die cavity to form a first node blank; (d) hydroforming a second portion of the workpiece so as to conform with the shape of a second portion of the die cavity to provide the fuel rail to form a second node blank; (e) performing a machining or metal working operation on the first and second node blanks to form a hydroformed fuel rail having first and second node portions; and (f) installing the hydroformed fuel rail in a fuel delivery system, wherein fuel is supplied through the hydroformed fuel rail under pressure to and selectively injected within each of the combustion chambers of the engine for subsequent combustion.