Cylinder head for internal combustion engine has inner peripheral surface protruding out of cast material of cylinder head and valve seat ring with L-shaped or Y-shaped cross-section in cylinder head

摘要

The cylinder head (1) consists of a cast material with an essentially annular valve seat (2) with an inner peripheral surface that acts as a single sealing surface for a gas exchange valve. Only the inner peripheral surface (2') protrudes out of the cast material of the cylinder head and the valve seat ring with an L-shaped or Y-shaped cross-section in the cylinder head.