Double cam axial engine with over-expansion, variable compression, constant volume combustion, rotary valves and water injection for regenerative cooling
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United States of America Patent
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Nov 24, 2015
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N/A
app pub date -
Feb 27, 2015
filing date -
Nov 26, 2014
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Abstract
An axial engine includes a cam assembly housing moveable away from a cylinder head to reduce a compression ratio during conditions giving rise to detonation and movable towards the cylinder head to raise the compression ratio when operation allows the higher compression ratio. Piston rod ends ride in counter rotating slots balancing lateral forces on the piston rods. Piston dwell at Top Dead Center (TDC) provides for constant volume combustion and extended piston travel during the power stroke allows for over-expansion. Rotary valves improve volumetric efficiency and water injection supports increased compression ratio leading to improved thermodynamic efficiency.
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