METHODS AND SYSTEMS FOR MANAGING A CLEARANCE GAP IN A PISTON ENGINE
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United States of America Patent
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N/A
Issued Date -
Jul 4, 2013
app pub date -
Dec 29, 2011
filing date -
Dec 29, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A piston engine may include a piston assembly, which may include a piston having a self-centering feature. The piston assembly may be configured to translate in a bore of the cylinder, and contact a combustion section and/or gas driver section. The self-centering feature may use a flow of blow-by gas in a clearance gap to provide a self-centering force on the piston assembly. The self-centering feature may include one or more slotted pockets, a step, a tapered portion, any other suitable feature, or a combination thereof. Optionally, a piston assembly may include a feature that aids in self-centering such as, for example, a labyrinth seal.
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