Variable oil ring tension mechanism
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United States of America Patent
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Nov 26, 2002
Grant Date -
N/A
app pub date -
Mar 15, 2001
filing date -
Mar 15, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A variable oil ring compression mechanism provides for real-time cyclic variation of piston ring tension in an operating internal combustion engine. A cam is situated in the gap of a piston oil control ring, the cam affixed to a shaft secured to a pivot plate positioned within the body of the piston, wherein the pivot plate is adapted to oscillate in a follower-style rocking motion responsive to the rotary movement of a connecting rod boss positioned in close proximity with the plate. In a preferred form, the cam is situated between ends of an expander ring positioned between oil scrapper rails in the bottom groove of the piston.
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