Insulating Gas Boundary Layer for Internal Combustion Engines
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Mar 14, 2014
filing date -
Mar 14, 2013
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Abstract
A cylinder has an insulating gas boundary layer (IGBL) across the cylinder wall inner surface, the IGBL formed by injection of an insulator fluid into the combustion chamber of the cylinder. In one implementation, a pressure differential is engineered between the top region of the cylinder and the bottom region of the cylinder. In yet another implementation, the insulator injection pressure is temporally modified in synchronicity with the piston cycle and/or in accordance with other temporal factors to provide appropriate IGBL coverage.
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