The cylinder head of a four-valve engine

摘要

The subject innovation relates to a cylinder head of a four-valve engine, the cylinder head bolt boss portion (2) and the water jacket 3 is formed in the formed body (1) at a predetermined position, the lower surface of the port body (5 ) with the associated valve seat (4) is formed at a predetermined interval, the valve guide 6 in line with the central axis with the same axis of the valve seat (4) is provided within each body and four valve seat (4) central portion in the cylinder head of a four-valve engine, the injector sleeve (7) is installed in, and connected to the cooling water supply unit (9) from one end of the cylinder block, between the valve seat and the cooling water into the other end of the water jacket of the cylinder head a cooling water pipe (8) connected to the discharge section 10 has a structure which is arranged.