METHODS OF FORMING A THERMALLY ISOLATED EXHAUST PORT
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United States of America Patent
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Issued Date -
Jan 19, 2023
app pub date -
Sep 14, 2022
filing date -
Sep 14, 2022
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Abstract
A method of forming a thermally isolated exhaust port, the method comprising applying an endothermic material to an exhaust port core in a mold for an engine cylinder head, forming the engine cylinder head with an exhaust port using a casting process, generating, in the cylinder head with the exhaust port during the casting process, nodular graphite iron proximate the endothermic material around the exhaust port core, and forming the thermally isolated exhaust port containing nodular graphite iron in the cylinder head.
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