ENGINE STRUCTURE
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United States of America Patent
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Issued Date -
Sep 12, 2024
app pub date -
Mar 1, 2024
filing date -
Mar 9, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
This engine structure includes: a cylinder block in which a cylinder bore is formed; a piston provided in the cylinder bore; a cylinder head provided to an upper portion of the cylinder block in a manner to seal the cylinder bore; and a ring that is inserted in the upper end portion of the cylinder bore and has an inner diameter that is smaller than the diameter of the cylinder. A first abradable layer that is worn down by contact with an outer peripheral surface of the piston is formed on an inner peripheral surface of the ring.
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