CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To enable miniaturization and prevent the deterioration of performance and fuel economy by reducing pressure loss of exhaust gas, in regard to a cylinder head of an internal combustion engine. SOLUTION: An exhaust passage 22 communicated with combustion chambers 16a, 16b, 16c, 16d is integrally formed. In the combustion chambers 16a, 16b positioned in end parts, exhaust ports 18a1, 18a2, 18d1, 18d2are formed, such that first axial lines La, Ld connecting central positions of the combustion chambers 16a, 16d with the gravity center position of a total area of the exhaust ports 18a1, 18a2, 18d1, 18d2are inclined to an assembling part 22 side of the exhaust passage 20. The exhaust ports 18a1, 18a2situated in the outermost positions are placed in exhaust passage parts 21a, 21d sides. COPYRIGHT: (C)2007,JPO&INPIT