CYLINDER HEAD AND METHOD OF MANUFACTURING CYLINDER HEAD
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United States of America Patent
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Issued Date -
Jul 28, 2016
app pub date -
Jan 20, 2016
filing date -
Jan 20, 2016
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Abstract
A cooling water channel core that is used for casting of the cylinder head includes a core body for obtaining a channel that passes through the periphery of a plurality of intake valve insertion holes, and a core print that is integrally formed with the core body at a location that is between an adjacent two combustion chambers of the core body and that comes in contact with an outer casting mold in a casting mold manufacturing step. When the cooling water channel core is arranged inside the outer casting mold and casting is performed, a cylinder head is manufactured that has an opening portion that opens in an outer face from the cooling water channel. The opening portion is sealed by a sealing plug after being utilized for sand extraction and inspection.
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