Coolable trunk piston for internal combustion engines
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United States of America Patent
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-
Oct 1, 1991
Issued Date -
N/A
app pub date -
Nov 5, 1990
filing date -
Dec 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a two-piece piston with a head piece and a trunk hinged only over the piston pin, the annular space radially located inside the piston ring groove and open in the direction of the trunk is covered with a sheet metal wall part forming a cooling duct. The sheet metal wall part is held by a collar that extends from the outer annular wall of the head piece and is cramped around the sheet metal wall part. For optimally covering the annular space, the sheet metal wall part is radially divided into two parts.
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