Method of manufacturing a piston for internal combustion engines
AssigneeAisin Seiki Kabushiki Kaisha
InventorsSohichi Hara, Minori Matsuzaki
Life of this patent
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Abstract
A method of manufacturing a piston for internal combustion engines which utilize a core molding or casting system for forming a hollow chamber for the passage of cooling oil therethrough. The manufacturing method includes the steps of preparing a core so as to have at least a first and second foot portion extending therefrom; inserting a bar member made of magnetic materials within each of the first and second foot portions; positioning at least one permanent magnet on a core box; and fixing the core to the core box via the bar members due to the magnetic flux of the permanent magnet.
Claims5
A method of manufacturing a piston for internal combustion engines so as to form a hollow chamber in a piston head of the piston for the passage of cooling oil, which comprises:
- preparing a core so as to have at least a first and second foot portion extending therefrom;
- inserting a bar member made of magnetic materials within each of said first and second foot portions;
- positioning at least one permanent magnet on a core box;
- and
- fixing said core to said core box via said bar members due to the magnetic flux of said permanent magnet.
Dependencies are inferred from the claim text.