Back to results
US 7,377,206 B2Granted
Piston for an internal combustion engine
AssigneesMAHLE Technology, Inc., Mahle International GmbH
InventorJonathan Douglas
Life of this patent
Estimating the term…
Abstract
A piston for an internal combustion engine, which performs a sliding reciprocating motion in a cylinder, and a method for producing the piston. The piston has a piston head and a piston skirt having at least one bearing surface. The at least one bearing surface is provided at least in part with a first overlay, and a second overlay is applied at least to parts of the first overlay. The first overlay exhibits greater wear resistance than the second overlay.
Claims10
A piston for an internal combustion engine, comprising:
- a piston head;
- a piston skirt comprising at least one bearing surface, the piston skirt performing a sliding reciprocating motion in a cylinder;
- a first overlay on the at least one bearing surface, said first overlay comprising thixotropic epoxy emulsions containing graphite, molybdenum, polytetrafluoroethylene or combinations thereof or combinations thereof with metals;
- and
- a second overlay applied at least to parts of the first overlay, said second overlay comprising epoxy emulsions containing graphite, molybdenum, polytetrafluoroethylene or combinations thereof, wherein the first overlay exhibits greater wear resistance than the second overlay.
2 more elements
Dependencies are inferred from the claim text.