To improve cooling effect of respective parts in a cylinder head such as a combustion surface and a valve guide part to avoid high temperature stress responding to increase of output of the cylinder head.
In the cylinder head CH of an internal combustion engine, an inter-exhaust-valve jacket 7, connected with an exhaust gas port side jacket 13, having a shape for enclosing an exhaust gas merging port 11 is formed at or around an exhaust valve guide hole 10 part and a passage 15 for cooling the exhaust gas port is opened in an attaching surface of a bottom surface of the cylinder head CH to a cylinder block. A cylindrical deflector 35 for communicating from the passage 15 for cooling the exhaust gas port to the inter-exhaust-valve jacket 7 is internally provided so that a fluid refrigerant from the cylinder block is directly introduced from the passage 15 for cooling exhaust gas port to the inter-exhaust-valve jacket 7. The deflector 35 is provided to detour to avoid interference with the exhaust gas merging port 11 and an exhaust gas branching port 11a.
| JP7104373 | cylinder head |
KURODA RYOICHI
SAITO MASAHIRO
| JPH0533640A | 1993-02-09 | |||
| JPH0814101A | 1996-01-16 |
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