公开(公告)号：US20230417203A1

公开(公告)日：2023-12-28

申请号：US17809421

申请日：2022-06-28

Applicant: GM Global Technology Operations LLC

Inventor： Ronald John Petrus ,  Jared Matthew Satkowiak ,  Hsiao F. Wong ,  Kenneth E. Schroeder ,  Qigui Wang ,  Richard D. Ricchi

IPC: F02F3/00 ,  B33Y80/00 ,  B33Y40/10 ,  B22F1/142 ,  C22C21/00

CPC classification number: F02F3/0084 ,  F02F3/00 ,  B33Y80/00 ,  B33Y40/10 ,  B22F1/142 ,  C22C21/00 ,  F02F2003/0007 ,  B33Y10/00

Abstract: An additive manufactured piston having a crown portion and a skirt portion form of an aluminum-cerium-silicon alloy. The piston includes a least one recess pocket in an unstressed region located at an interface between an inner surface of the crown portion and an outer surface of the skirt portion. The skirt portion includes an outer panel surface defining an external rib adjacent a peripheral end surface, at least one stiffening rib extending from a pin boss to a skirt end, and a wall thickness of between 0.2 mm and 1.0 mm in a region between the external rib and the at least one stiffening rib. The skirt portion further includes an internal first rib having a width W1 on a thrust side portion and an internal second rib having a width W2 located on an anti-thrust side portion, in which W1 is greater than W2.

公开(公告)号：US11994085B2

公开(公告)日：2024-05-28

申请号：US17809421

申请日：2022-06-28

Applicant: GM Global Technology Operations LLC

Inventor： Ronald John Petrus ,  Jared Matthew Satkowiak ,  Hsiao F. Wong ,  Kenneth E. Schroeder ,  Qigui Wang ,  Richard D. Ricchi

IPC: F02F3/00 ,  B22F10/366 ,  B33Y40/10 ,  B33Y80/00 ,  C22C21/00 ,  B22F10/28 ,  B33Y10/00

CPC classification number: F02F3/0084 ,  B22F10/366 ,  B33Y40/10 ,  B33Y80/00 ,  C22C21/00 ,  B22F10/28 ,  B22F2301/052 ,  B33Y10/00 ,  F02F2003/0007

Abstract: An additive manufactured piston having a crown portion and a skirt portion form of an aluminum-cerium-silicon alloy. The piston includes a least one recess pocket in an unstressed region located at an interface between an inner surface of the crown portion and an outer surface of the skirt portion. The skirt portion includes an outer panel surface defining an external rib adjacent a peripheral end surface, at least one stiffening rib extending from a pin boss to a skirt end, and a wall thickness of between 0.2 mm and 1.0 mm in a region between the external rib and the at least one stiffening rib. The skirt portion further includes an internal first rib having a width W1 on a thrust side portion and an internal second rib having a width W2 located on an anti-thrust side portion, in which W1 is greater than W2.