Water jacket
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United States of America Patent
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May 24, 2022
Grant Date -
Sep 30, 2021
app pub date -
Mar 25, 2021
filing date -
Mar 31, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A water jacket includes: a cooling channel through which a coolant flows, the cooling channel being formed in a cylinder block in which a plurality of cylinders are formed such that the cooling channel is positioned outside the cylinders; and a cooling groove (slit) through which the coolant flows, the cooling groove being formed between adjacent ones of the cylinders. When a slit end portion is viewed in sectional view in a direction in which the cylinders are arranged, the slit end portion and a cylinder-block inner wall are continuous with each other via an inclined portion inclined so as to become thicker toward the cylinder-block inner wall.
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