Title:
MANUFACTURING METHOD FOR INTERNAL COMBUSTION ENGINE PISTON, MANUFACTURING DEVICE FOR INTERNAL COMBUSTION ENGINE PISTON, AND INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/097924
Kind Code:
A1
Abstract:
Molten aluminum (M1) is poured into a metal mold (11) configured from: a piston-forming section (12) for forming a piston (1) except for the mouth (7) of the combustion chamber (5a); and a mouth-forming section (13), a portion or all of which is formed from copper or a copper alloy having a higher thermal conductivity than the carbon steel configuring the piston-forming section (12) and which is for forming the mouth (7). By making the cooling rate of the molten aluminum (M1) in the mouth-forming section (13) to be faster than the cooling rate for the molten aluminum (M1) in the piston-forming section (12) and refining the cast structure of the mouth (7), it is possible to improve both heat resistance and strength at the piston mouth without worsening fillability of the molten metal into intricate sections in other areas or solidification of the piston as a whole.
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Inventors:
IIZUKA TATEOKI (JP)
Application Number:
PCT/JP2013/083013
Publication Date:
June 26, 2014
Filing Date:
December 10, 2013
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
B22D27/04; B22C9/06; B22D15/02; F02F3/00; F16J1/01
Foreign References:
| JPS59108849A | 1984-06-23 | |||
| JPS6178548A | 1986-04-22 | |||
| JP2004255430A | 2004-09-16 | |||
| JPS61215860A | 1986-09-25 |
Attorney, Agent or Firm:
Seiryu Patent Professional Corporation et al. (JP)
Clear stream international patent business corporation (JP)
Clear stream international patent business corporation (JP)
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