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US 2012/0246936 A1Published application
Method for producing metallic-sodium-filled engine valve
AssigneesYoshimura Company, Mitsubishi Heavy Industries, Ltd.
InventorsHirokazu Morii, Kazutaka Maruyama, Hyoji Yoshimura
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Abstract
In the disclosed method, an engine valve (V) filled with metallic sodium (Na) within is produced by means of hardening metallic sodium (Na)—that has been liquefied through heat-melting—into rods by linearly discharging the metallic sodium (Na) in a liquid hydrocarbon (120), thus cooling the metallic sodium, then inserting these rods into a hollow section (H) through the opening (M) of a stem section (S) , and then sealing the opening (M).
Claims5
1-4. (canceled)
A method for producing an engine valve filled inside with metallic sodium, the engine valve produced by:
- putting metallic sodium into a hollow portion from an opening of a stem portion having the hollow portion in an inner portion and having the opening at an upper end;
- and thereafter sealing the opening, the method comprising:
- cooling and solidifying metallic sodium heated and melted to a liquid state into a bar-shaped piece;
- and
- thereafter inserting the bar-shaped piece of metallic sodium into the hollow portion from the opening of the stem portion.
2 more elements
Dependencies are inferred from the claim text.