| 摘要 |
There is provided a cylinder head cooling apparatus of an engine capable of enhancing cooling efficiency around an auxiliary combustion chamber wall. The cylinder head cooling apparatus of an engine including a cylinder head 1 having therein an intake port 2, an exhaust port 3, an auxiliary combustion chamber 4, and a cooling water jacket 5, in which an intake port wall 2a, an exhaust port wall 3a, and an auxiliary combustion chamber wall 4a are placed in the cooling water jacket 5, the cooling water jacket 5 includes a cooling water inlet 5a and a cooling water outlet 5b, engine cooling water 6 flowed from the cooling water inlet 5a into the cooling water jacket 5 flows out from the cooling water outlet 5b through the cooling water jacket 5, wherein a cooling water guide wall 7 is provided upstream of the auxiliary combustion chamber wall 4a in a cooling water passing path of the cooling water jacket 5, and the upstream cooling water guide wall 7 is formed into a shape whose width gradually widens toward a downstream side. |
