Cylinder liners
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 1990
Grant Date -
N/A
app pub date -
May 11, 1988
filing date -
May 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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