CYLINDER HEAD AND ENGINE
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United States of America Patent
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Issued Date -
Aug 19, 2021
app pub date -
Feb 17, 2020
filing date -
Feb 17, 2020
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Abstract
A cylinder head includes: a cylinder head body that includes a lower deck, an upper deck defining a first cooling water space together with the lower deck, and valve hole-forming walls; a rocker housing that includes a rocker-side wall formed integrally with the cylinder head body; an expansion wall portion that expands from the cylinder head body and defines a second cooling water space communicating with the first cooling water space and extending up to a position over the upper deck; and an EGR passage-forming portion that is provided in the second cooling water space.
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