Patent ID: 7905216
Filing Date: 2011-03-15
Classification: F02M,F16L

Abstract:
1. A common rail that is used in a fuel injection system of an internal combustion engine, the common rail comprising: a rail body portion that includes inside of itself a flow path along an axial direction; and branching pipe portions that are arrayed along the axial direction of the rail body portion, which project from and are molded integrally with the rail body portion, and each of which includes inside of itself a branching path that branches from the flow path, wherein edges of inlets of the branching paths at intersecting portions between the flow path and the branching paths are chamfered, and, of the edges, a radius of curvature of the edges in the axial direction of the rail body portion is larger than a radius of curvature of the edges in a direction orthogonal to the axial direction of the rail body portion.