Patent ID: 7258108
Filing Date: 2007-08-21
Classification: F02M

Abstract:
1. A fuel injection rail for distributing fuel supplied by pressure thereto through a fuel feed line by a fuel delivery system to injectors, said fuel injection rail comprising a rail body formed by joining together first and second body members; wherein the first body member has the shape of an extruded pan in the shape of a trough of U-shape having a bottom and upstanding side walls, the second body member has the shape of a flat plate and has a thickness smaller than that of the first body member to thereby allow the plate to absorb pressure pulses to a greater extent than the first member, said side walls of the first body member having edges folded over edges of said second body member so as to crimp said edges of the second body member to form folded seams, the folded seams being brazed, and injector cups assembled to said bottom of the first body member; wherein the first body member is formed in the shape of the trough by bending and said bottom of the through has a stepped bottom wall, wherein said trough shape of said first body member has an open top, said edges of said side walls each being formed with an outward bend to form steps on which a lower surface of said edges of said flat plate of said second body member are supported, said edges of said side walls being bent over an upper surface of said flat plate and thereby crimp said edges of the second body member, wherein the crimped edges of the flat plate, form, when brazed with the trough, seams constituting the sole connections between the first and second body members.