Cylinder head of an internal combustion engine comprising a cooling circuit

摘要

A cylinder head of an internal combustion engine in which a cooling circuit is arranged, suited for a coolant circulation, includes a peripheral duct surrounding an exhaust valve seat and a peripheral duct surrounding an inlet valve seat communicating by means of a connecting duct; the cylinder head including a first coolant inlet, a second coolant inlet, and an outlet for heated coolant, the second inlet communicating with the connecting duct.