CYLINDER HEAD AND ENGINE

摘要

A cylinder head is provided with: a plurality of port wall sections (50) forming air intake and exhaust conduits; an outer peripheral wall section (51) annularly shaped so as to be disposed outside the plurality of port wall sections (50) at a distance therefrom, the outer peripheral wall section (51) forming a water chamber (48) between the outer peripheral wall section (51) and at least the port wall sections (50), the water chamber (48) causing cooling water to flow therethrough; and a bottom wall section facing the combustion chamber of the engine and connecting an end of the outer peripheral wall section (51) and ends of the port wall sections (50). In order to set the distance (L1) between the outer peripheral wall section (51) and the port wall sections (50) to be less than or equal to a predetermined distance, the outer peripheral wall section (51) is provided with thick-walled sections (54) which are formed by increasing the thickness of the outer peripheral wall section (51) toward the port wall sections (50).