Patent · US Active

Internal combustion engine liner

US9874174B2 · kind B2 · utility

0Cited by

3References

18Claims

0Family size

Assignee

H.E.F. · FR

Inventors

Christophe Heau · Orange, FR
Laurent Bombillon · Bouthéon, FR
Philippe Maurin-Perrier · Saint-Marcellin-en-Forez, FR

Key dates

Filing date	May 6, 2013
Grant date	Jan 23, 2018
Priority date	—
Expiry date	Jan 15, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2253/12
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

An inside surface of an internal combustion engine liner is treated to have a surface roughness Ra smaller than 0.06 μm, and then receives a DLC coating. A method of producing the internal combustion engine liner includes: forming the liner from a metal material, polishing an inside surface of the liner to obtain a polished inside surface of roughness Ra smaller than 0.06 μm, and applying the DLC coating to the polished inside surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.