Piston having an undercrown surface with coating and method of manufacture thereof
US10731598B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Oct 18, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2253/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vehicle internal combustion piston and method of construction thereof are provided. The piston includes piston body extending along a central longitudinal axis, having an upper combustion wall forming an upper combustion surface and an undercrown surface opposite the upper combustion surface. An annular ring belt region depends from the upper combustion surface, a pair of skirt panels depend from the ring belt region, and a pair of pin bosses depend from the undercrown surface to provide laterally spaced pin bores aligned along a pin bore axis for receipt of a wrist pin. The undercrown surface forms a central undercrown region, and a portion of either an open outer cooling gallery, a sealed outer cooling gallery, or an outer galleryless region. A coating including copper is applied to hot spots along the undercrown surface to mitigate the hot spots provide a more uniform temperature along the undercrown surface during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.