Patent ID: 8151743

Claim:
Cooling channels for valve seat rings of a cylinder head of a piston engine, the cooling channels comprising: a cooling channel region formed by two interconnected rings; a single cooling fluid supply channel connected to said cooling channel region; at least two cooling fluid drain channels each fluidically connected to one of said two interconnected rings and each disposed on mutually opposite ends of different ones of the valve seat rings; said two interconnected rings disposed at a distance from the valve seat rings, adjacent to them; said two interconnected rings each surrounding one of an intake channel and an exhaust channel of the cylinder head; and said two interconnected rings having a shared straight annular segment directly connected to and receiving a whole quantity of a cooling fluid from said single cooling fluid supply channel, each of said two interconnected rings having a respective annular segment being circular in shape, said respective annular segment having two ends connected to said shared straight annular segment, each of said two ends of said respective annular segment connected to said shared straight annular segment and receiving and channeling an incoming flow of the cooling fluid supplied from said cooling fluid supply channel to a respective one of said cooling fluid drain channels.