Compact packaging for intake charge air cooling

摘要

An internal combustion engine includes an engine block defining a plurality of cylinders. A cylinder head casting is mounted to the engine block. The cylinder head casting defines intake ports and exhaust ports communicating with the plurality of cylinders. The cylinder head casting defines an air passage in connection with the intake ports and includes elongated extruded cooling elements defining liquid coolant passages integrated into the cylinder head casting within the air passage for cooling intake air passing through the air passage.

主权项

1. An internal combustion engine, comprising
an engine block defining a plurality of cylinders; and a one-piece cylinder head casting mounted to said engine block, said cylinder head casting defining an upper wall of the plurality of cylinders and intake ports and exhaust ports communicating directly with said plurality of cylinders, said cylinder head casting defining an air passage in connection with said intake ports and including cooling elements defining liquid coolant passages disposed in the cylinder head casting within the air passage for cooling intake air passing through the air passage.