| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling structure of a cylinder head capable of enhancing the cooling effect of the cylinder head, and capable of enhancing the cooling effect of oil flowing in a bottom wall, by expanding a cooling port, while maintaining the oil return function. SOLUTION: This cooling structure of the cylinder head is provided so that a combustion chamber 14 is arranged in a lower part of the cylinder head 7, an upper part is provided with a valve system chamber partitioned via the combustion chamber 14 and the bottom wall, a cam chain chamber 51 is arranged in a side part of the cylinder head 7, an oil return passage is arranged in the bottom wall, and an exhaust port 16 is arranged in a front part of the cylinder head 7 between the combustion chamber 14 and the valve system chamber, and is characterized in that a cooling air introducing port 60 is arranged between the exhaust port 16 and the bottom wall, and the bottom wall is inclined toward the cam chain chamber 51 in the vehicle lateral direction. COPYRIGHT: (C)2010,JPO&INPIT |
