Method for the manufacture of a two piece piston and piston
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United States of America Patent
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Sep 8, 1992
Grant Date -
N/A
app pub date -
Oct 18, 1991
filing date -
Oct 18, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Piston tops (1, 70), specially those provided with combustion chamber (2, 20) and ring zone (3, 30) have their cooling condition sensibly improved in such regions due to a better use of the cooling oil capacity by closing the cooling chamber (5, 50) and the region 2I under the combustion chamber by annular ring members (96, 13) in a resilient material, e.g., a polymeric material or, preferably a spring steel, which clamp under the cooling chamber (5, 50) and the region 2I with dimensional interference respectively with grooves (10, 100), notches (11, 110) and groove 15. Methods for the manufacture of such top portion having a reduced compression height are also described.
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