| 摘要 |
An engine includes a cylinder block having at least one cylinder bore, a cylinder head connected to the cylinder block, and an intake manifold connected to the cylinder head. The cylinder head includes an intake port located upstream of a cylinder bore of the at least one cylinder bore, the intake port providing a passageway between the intake manifold and a cylinder bore of the at least one cylinder bore. An intake port sleeve is located at least partially within the intake port.
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