The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2011
Filed:
Feb. 23, 2007
Yozo Kutsukake, Saitama, JP;
Ryomei Yawata, Saitama, JP;
Kenichi Kubo, Saitama, JP;
Shogo Yarita, Saitama, JP;
Kiyoshi Tateda, Saitama, JP;
Yozo Kutsukake, Saitama, JP;
Ryomei Yawata, Saitama, JP;
Kenichi Kubo, Saitama, JP;
Shogo Yarita, Saitama, JP;
Kiyoshi Tateda, Saitama, JP;
Bosch Corporation, Tokyo, JP;
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.