Patent · US Active

Thermal barrier cylinder liner insert

US10934967B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Tenneco GmbH · DE

Inventors

Blair Matthew Jenness · Grosse Pointe Park, US
Markus Aumiller · Hunzenschwil, CH

Key dates

Filing date	Nov 28, 2018
Grant date	Mar 2, 2021
Priority date	—
Expiry date	Dec 11, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2251/048
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

An insert for a cylinder liner which is capable of trapping heat in the combustion chamber is provided. The insert extends circumferentially around a center axis and longitudinally from an upper end to a lower end. The insert includes an inner portion presenting an inner surface facing the center axis and an outer portion presenting an outer surface facing away from the center axis. The inner portion is formed of an iron-based material, such as steel, and the outer portion is formed of a material having a thermal conductivity of not greater than 3.5 W/mK, for example ceria stabilized zirconia. The inner and outer portions each present a thickness, and the thickness can form a gradient between the upper end and the lower end of the insert. For example, the thickness of the outer portion can be greater at the upper end than at the lower end of the insert.

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