Cooling channels in the cylinder head of an internal combustion engine
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorAlbrecht Reustle
Life of this patent
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Abstract
In a method for casting a cylinder head of a piston engine in a region of cooling channels for valve seat rings, a separate core is provided for defining cooling channels, and the cooling channel core is mounted in a bottom plate of a casting mold at various points thereof. The cooling channels for the valve seat rings have a cooling channel region formed by two interconnected rings and at least one cooling fluid supply channel and at least one cooling fluid drain channel. The two rings are disposed at a distance from the valve seat rings, adjacent to them.
Claims10
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.
Dependencies are inferred from the claim text.