CYLINDER HEAD FOR ENGINE

摘要

PROBLEM TO BE SOLVED: To sufficiently lighten an engine while preventing actuation failure of a functional part caused by deformation in fastening in a cylinder head for the engine. SOLUTION: In the cylinder head 11, an intake valve 14 and an exhaust valve 15 are mounted and placed above a cylinder block 17 so as to be positioned upward of a cylinder 18, and fastened to the cylinder block 17 by four fastening bolts 22 on an outer peripheral side of the cylinder 18. An annular groove 23 positioned outside the intake valve 14 and the exhaust valve 15 is formed on an upper surface of the cylinder head 11 on a cylinder 18 side from an intersection point of an axis of the fastening bolt 22 and the upper surface of the cylinder head 11.