Cylinder head for an internal combustion engine
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United States of America Patent
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Oct 30, 2018
Grant Date -
Mar 9, 2017
app pub date -
Sep 8, 2015
filing date -
Sep 8, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A cylinder head includes an inner structural member having a plate forming a deck face of the cylinder head and forming at least one dished cylinder roof, and a plurality of cylinder head bolt columns extending from the plate. An outer member is supported by the inner structural member and forms a cooling jacket, intake ports, and exhaust ports. Passages of the cooling jacket are lined with metal walls in contact with the composite structure of the outer member. A method of forming a cylinder head includes positioning a structural insert and a lost core insert in a tool, and injecting material into the tool to form a body surrounding the structural insert and the lost core insert thereby forming a head preform. The lost core insert is shaped to form a cooling jacket and has a lost core material generally encapsulated in a metal shell.
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