Piston ring improvements for a stirling engine
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United States of America Patent
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N/A
Issued Date -
Feb 6, 2003
app pub date -
Jun 19, 2002
filing date -
Jun 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method for sealing a working zone in a cylinder of a thermal cycle engine. The method includes providing a seal ring within a ring groove of the piston, and, additionally, applying a backing force on the seal ring by means of a backing ring having a width that varies with circumferential displacement from a fiducial circumferential position on the backing ring. The backing force is provided by means of a backing ring that has a non-circular shape in an uncompressed condition.
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