公开(公告)号：US10151269B2

公开(公告)日：2018-12-11

申请号：US15184434

申请日：2016-06-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  Alin C. Dragoiu ,  Vincent V. Tiaga

IPC: F16J1/04 ,  F02F3/22 ,  F16J1/00 ,  F16J9/00 ,  F16J1/16 ,  F02F3/00

Abstract: An integrally formed piston has a crown portion having an upper crown surface and an undercrown surface. A ring belt extends from the undercrown surface at a periphery thereof. The ring belt includes an uppermost ring land and at least one oil galley contoured to extend around at least two surfaces of the uppermost ring land. The oil galley has an opening at the undercrown surface for receiving a cooling fluid therein for cooling the uppermost ring land. A skirt extends from the undercrown surface and the ring belt and has a plurality of stiffening features arranged in a truss formation. At least one of the plurality of stiffening features has an I-beam cross-section and another of the plurality of stiffening features has a negative draft angle.

公开(公告)号：US20170363040A1

公开(公告)日：2017-12-21

申请号：US15184434

申请日：2016-06-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  Alin C. Dragoiu ,  Vincent V. Tiaga

IPC: F02F3/22 ,  F16J1/00 ,  F16J9/00 ,  F02F3/00

CPC classification number: F02F3/22 ,  F02F2003/0007 ,  F16J1/001 ,  F16J1/16 ,  F16J9/00

Abstract: An integrally formed piston has a crown portion having an upper crown surface and an undercrown surface. A ring belt extends from the undercrown surface at a periphery thereof. The ring belt includes an uppermost ring land and at least one oil galley contoured to extend around at least two surfaces of the uppermost ring land. The oil galley has an opening at the undercrown surface for receiving a cooling fluid therein for cooling the uppermost ring land. A skirt extends from the undercrown surface and the ring belt and has a plurality of stiffening features arranged in a truss formation. At least one of the plurality of stiffening features has an I-beam cross-section and another of the plurality of stiffening features has a negative draft angle.

公开(公告)号：US20180216658A1

公开(公告)日：2018-08-02

申请号：US15421917

申请日：2017-02-01

Applicant: GM Global Technology Operations LLC

Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  Alin C. Dragoiu

IPC: F16C7/02 ,  F02B75/32

CPC classification number: F16C7/023 ,  F02B75/32 ,  F16C2220/24

Abstract: In various aspects, a lightweight connecting rod for an internal combustion engine is provided. The lightweight connecting rod has one or more of: hollow regions, lattice regions, or weight reduction apertures. The connecting rod may be made via an additive manufacturing process. The connecting rod includes a first end, a second end, and an arm. The first end is configured to be pivotally connected to a piston. The second end is configured to be pivotally connected to a crankshaft. The arm extends between the first end and the second end. The arm includes a peripheral wall. The peripheral wall has an outer surface, an inner surface, and an interior region. The interior region is defined be the inner surface. The interior region includes at least one void space. The void space is a lattice structure or a hollow region.