US 11,994,085 B2
Piston for use in internal combustion engines and method of making the piston
Ronald John Petrus, Lake Orion, MI (US); Jared Matthew Satkowiak, Grand Blanc, MI (US); Hsiao F. Wong, Farmington Hills, MI (US); Kenneth E. Schroeder, Sanford, MI (US); Qigui Wang, Rochester Hills, MI (US); and Richard D. Ricchi, Lapeer, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 28, 2022, as Appl. No. 17/809,421.
Prior Publication US 2023/0417203 A1, Dec. 28, 2023
Int. Cl. F02F 3/00 (2006.01); B22F 10/366 (2021.01); B33Y 40/10 (2020.01); B33Y 80/00 (2015.01); C22C 21/00 (2006.01); B22F 10/28 (2021.01); B33Y 10/00 (2015.01)
CPC F02F 3/0084 (2013.01) [B22F 10/366 (2021.01); B33Y 40/10 (2020.01); B33Y 80/00 (2014.12); C22C 21/00 (2013.01); B22F 10/28 (2021.01); B22F 2301/052 (2013.01); B33Y 10/00 (2014.12); F02F 2003/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A piston for an engine of a vehicle, comprising:
a crown portion having a peripheral side surface and an inner crown surface;
a skirt portion comprising:
a pair of skirt ends extending from the peripheral side surface; and
a pair of skirt panels extending from the inner crown surface and interconnecting the pair of skirt ends, wherein at least one of the pair of skirt panels include an outer panel surface, an inner panel surface opposite the outer panel surface, and a pin boss; and
wherein the outer panel surface cooperates with the inner crown surface to define at least one recessed pocket at an interface between the outer panel surface and the inner crown surface;
wherein the skirt portion further comprises a peripheral distal end surface;
wherein the outer panel surface of the at least one of the pair of skirt panels defines an external rib adjacent the peripheral distal end surface and at least one stiffening rib extending from the pin boss to one of the pair of skirt ends;
wherein the at least one of the pair of skirt panels includes a wall portion defined between the external rib and the at least one stiffening rib; and
wherein the wall portion includes a wall thickness of between 0.2 mm and 1.0 mm.