Internal combustion engine with regenerator, hot air ignition, and naturally aspirated engine control
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United States of America Patent
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May 22, 2007
Issued Date -
N/A
app pub date -
Nov 21, 2005
filing date -
Aug 31, 1999
priority date (Note) -
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Abstract
An internal combustion engine and method is disclosed wherein separate compression and power cylinders are used and a regenerator or pair of regenerators is mounted between them to provide heat for hot-air ignition. The single regenerator embodiment operates as a two-stroke cycle engine and the embodiment with an alternating pair of regenerators operates as a four-stroke cycle engine. The engine varies the amount of air entering the power cylinder to control the engine output during naturally aspirated operation using valve timing and/or volume control of dead space and can optionally include supercharging to control the engine at higher output levels.
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