Cast iron cylinder head or engine block contains feed channels for fuel, coolant and oil consisting of steel pipes which are enclosed by cast material without gap and bonded to it by mixed phase of steel and cast iron

摘要

Cast iron cylinder head or engine block contains feed channels for fuel, coolant and oil. These consist of steel pipes (1) which are enclosed by cast material without a gap and bonded to it by a mixed phase of steel and cast iron. An independent claim is included for a method for producing the cylinder head or engine block comprising forming a core packet consisting of sand cores (7) and pipes in the desired shape of the channel;#casting iron around it in a mold; and#cooling the casting.