Engine piston
US10184421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Mar 12, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2003/0007
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston for an internal combustion engine is provided. The piston includes a piston body of steel and including a crown portion, a pair of skirt portions and a pair of pin boss panels. The crown portion has an upper combustion surface, a lower surface having an undercrown surface area and an outer annular ring belt with at least one ring groove. The pin boss panels depend from the crown portion and extend in spaced relationship with one another between the skirt portions. Each pin boss panel includes a pin boss having a pin bore, and the pin bores are aligned with one another for receiving a wrist pin. Each pin boss panel also has at least one recess located vertically between the associated one of the pin bores and the crown portion to increase the undercrown surface area for improved cooling of the crown portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.