Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2011-03-15
2011-03-15
Moulis, Thomas N (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S468000, C451S076000
Reexamination Certificate
active
07905216
ABSTRACT:
To provide a common rail that can prevent stress concentration from arising locally with respect to intersecting portions between a flow path and branching paths and can prevent damage such as cracks.A common rail that is used in a fuel injection system of an internal combustion engine comprises: 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, 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, the radius of curvature of the edges in the axial direction of the rail body portion is larger than the radius of curvature of the edges in a direction orthogonal to the axial direction of the rail body portion.
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Kubo Ken'ichi
Kutsukake Yozo
Tateda Kiyoshi
Yarita Shogo
Yawata Ryomei
Bosch Corporation
Greigg Ronald E.
Moulis Thomas N
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