Linear free piston combustion engine with indirect work extraction via gas linkage
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United States of America Patent
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Apr 7, 2015
Grant Date -
Aug 16, 2012
app pub date -
Feb 15, 2011
filing date -
Feb 15, 2011
priority date (Note) -
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Abstract
Various embodiments of the present invention are directed toward a linear free piston combustion engine with indirect work extraction via gas linkage, comprising: a cylinder with two opposed free pistons disposed therein that form a combustion section in a center of the cylinder, each free piston comprising a front face facing the combustion section and a back face facing the opposite direction; two opposed extractor pistons disposed in their own cylinders at opposite ends of the free piston cylinder, each extractor piston comprising a front face facing the combustion section and a back face facing the opposite direction; and two gas linkages, each gas linkage comprising a volume sealed between the back face of a free piston and the front face of an extractor piston; wherein each extractor piston is connected to a rotary electromagnetic machine.
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