Cylinder sleeve for an internal combustion engine
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United States of America Patent
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Jun 20, 2023
Grant Date -
Jan 12, 2023
app pub date -
Dec 9, 2020
filing date -
Dec 11, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A cylindrical sleeve for an internal combustion engine is disclosed. The cylindrical sleeve includes a hollow cylindrical sleeve body, extending along an axial direction, with an inner peripheral side that has, along the axial direction, a first axial portion and a second axial portion. The inner peripheral side in the first axial portion is either cylindrical or opens at a first opening angle towards the second axial portion. The second axial portion opens at a second opening angle away from the first axial portion that is greater than the first opening angle. A first surface roughness of the inner peripheral side in the first axial portion is greater than a second surface roughness in the second axial portion.
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