Cylinder liners
US4921734A · kind A · utility
24Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | May 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Cylinder liners for internal combustion engines, particularly diesel engines, are described the liners comprising a metal outer sleeve having therein an inner sleeve comprising a ceramic material which is held by compressive hoop stresses under all normal engine operating conditions, the inner sleeve extending over at least a part of the axial length of the liner. In a preferred embodiment the inner sleeve comprises a composite material of two different ceramic materials. For example an inner sleeve is described having a silicon nitride working surface with a layer of partially stabilized zirconia thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.