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US 2007/0163744 A1Published application
Cylinder block casting bulkhead window formation
AssigneeGM Global Technology Operations LLC
InventorsJohn Douro, Peter Emling, Jason Murphy
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Abstract
A cylinder block casting is disclosed having a bulkhead window formed therein, the bulkhead window is formed by a set core received in one of a chill assembly and an integral barrel crankcase core of a mold package.
Claims20
A vent window core comprising:
- a main body adapted to be assembled with one of a crankcase chill and an integral barrel crankcase core of a mold package;
- and
- a shoulder extending laterally outwardly from a side of said main body, a cross-sectional shape of said shoulder determining a final shape of a vent window formed in a bulkhead of an engine cylinder block, and wherein said shoulder has a length which is substantially equal to a desired depth of the window.
A mold package for casting of an engine cylinder block comprising:
- a crankcase chill;
- an integral barrel crankcase core adapted to be disposed on said crankcase chill;
- and
- a vent window core adapted to be disposed between said crankcase chill and said integral barrel crankcase core, said vent window core further comprising:
- a main body;
- and
- a shoulder extending laterally outwardly from a side of said main body, a cross-sectional shape of said shoulder determining a final shape of a window formed in a bulkhead of an engine cylinder block.
4 more elements
A method of producing a cylinder block casting, the method comprising the steps of:
- providing a mold package;
- providing a vent window core including a main body and a shoulder extending laterally outwardly from a side of the main body, a shape of the shoulder determining a final shape of a window formed in a bulkhead of the engine cylinder block;
- assembling the vent window core with the mold package;
- filling the mold package with molten metal;
- and
- removing the cylinder block casting from the mold package.
3 more elements
Dependencies are inferred from the claim text.