公开(公告)号：US11359522B2

公开(公告)日：2022-06-14

申请号：US16450306

申请日：2019-06-24

Applicant: GM Global Technology Operations LLC

Inventor： Andrew Thomas Cunningham ,  Andrea Boscolo ,  Ali Shabbir ,  Zachary P. Steffes ,  Michael P. Van De Velde

IPC: F01L1/14 ,  F01M9/10 ,  F01L1/46

Abstract: A tubular structure comprises a first end and a second end, a cylindrical outer structure, and at least one inner cavity defined by the cylindrical outer structure and the first and second ends. The first and second ends each include a recess and a cap press fit within the recess. The caps provide a connection point for the ends of the tubular structure. Each end includes a vent in fluid communication with the inner cavity during manufacturing of the tubular structure, prior to insertion of the caps. An isotropic internal support structure extends longitudinally between the ends within the cylindrical outer structure and defines an oil flow channel extending through the tubular structure, each cap includes a cap orifice aligned with the oil flow channel, and the cylindrical outer structure, the first and second ends, and the internal support structure are continuously and unitarily formed.