Gasoline direct-injection rail

Abstract

To make it possible to prevent damage to a brazed part without increasing the thickness of a rail body even when the rail body and an end cap are fixed to each other by brazing, in view of high-pressure gasoline direct injection systems of the future. A gasoline direct injection rail comprising end caps 2 disposed inside respective ends of a rail body 1, with an outer circumference 3 of each end cap 2 and an inner circumference 4 of the rail body 1 being fixed to each other by brazing, wherein a reinforcing ring 6 having an axial length L of L≥5 mm is provided on the outer circumference 3 of the rail body 1; a first end 10 on an end cap 2 side of the reinforcing ring 6 is positioned so as not to overlap a brazed part 12 between the rail body 1 and the end cap 2; a distance X from the first end 10 of the reinforcing ring 6 to a distal end 13 of the brazed part 12 is 0 mm≤X≤15 mm; and a thickness of the reinforcing ring 6 is 40% or more of a thickness of the rail body 1.

Dependencies are inferred from the claim text.