Method for casting an iron alloy reinforced aluminum alloy engine block
AssigneeFord Global Technologies, LLC
InventorStaffan Rengmyr
Life of this patent
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Abstract
A method of high pressure die casting in iron alloy reinforcements for main bearing scantlings in an aluminum alloy engine block for an internal combustion engine. Prior to casting, reinforcements (1) having bores (6) for main bearing screws are placed in a die cavity (21), so that cores for main bearing screws protrude into the bores in each reinforcement on one side of the reinforcement. Then the reinforcements are fixed in the die cavity by placing a cylinder liner core (25) against a surface (27) of the reinforcement on the opposite side of the reinforcement.
Claims9
A method of high pressure die casting in first metal alloy reinforcements for main bearings scantlings in a second metal alloy engine block for an internal combustion engine, comprising the following steps:
- placing a first metal alloy reinforcement having bores for main bearing screws and an essentially semi-circular surface facing the main bearings between said bores at each scantling location in a die cavity, so that first core means in the die cavity protrude into said bores on one side of the reinforcement;
- fixing the reinforcement in the die cavity by placing second core means in the die cavity against a surface of the reinforcement on an opposite side;
- and
- introducing and pressurizing a molten second metal alloy in the die cavity.
A method of high pressure die casting in first metal alloy reinforcements for main bearing scantlings in a second metal alloy engine block for an internal combustion engine, comprising the following steps:
- placing a first metal reinforcement having bores for main bearing screws and an essentially semi-circular surface facing the main bearings between said bores at each scantling location in a die cavity, so that cores for main bearing screw bores in the die cavity protrude into said bores on one side of the reinforcement;
- fixing the reinforcement in the die cavity by placing a cylinder liner core against a surface of the reinforcement on an opposite side;
- and
- introducing and pressurizing a molten second metal alloy in the die cavity.
Dependencies are inferred from the claim text.