Cylinder head for internal combustion engine of motor vehicle in aeronautic field, has peripheral annular groove enclosing exhaust valve seat, where corrugated section of groove is formed by recesses and emboss

摘要

The head (10) has a cooling circuit circulating coolant i.e. oil. An exhaust pipe (12) is emerged from a circular exhaust cavity (14). An exhaust valve seat (22) is assembled in the circular exhaust cavity, and is comprised of a peripheral annular groove (28) formed on a circumference (24) of the peripheral annular groove. The peripheral annular groove enclosing the exhaust valve seat comprises a corrugated section that allows a passage of the coolant. The section is formed by recesses (44, 46) and an emboss (45).