Method for operating an internal combustion engine and an internal combustion engine
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United States of America Patent
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May 31, 2011
Grant Date -
Oct 28, 2010
app pub date -
Dec 19, 2008
filing date -
Dec 21, 2007
priority date (Note) -
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Abstract
An engine comprises a power cylinder having a power chamber, a compression cylinder having a compression chamber and a flow-through chamber connected with the compression chamber when a flow-through valve is open and connected with the power chamber when an intake valve is open. The engine is operated by flowing-in fresh charge into the compression chamber while increasing the volume of the compression chamber, compressing the fresh charge while decreasing the volume of the compression chamber, pushing-over the compressed fresh charge into the flow-through chamber, pushing-out the fresh charge into the power chamber, combusting the fresh charge while increasing the volume of the power chamber and discharging the combusted charge while decreasing the volume of the power chamber. The flow-through chamber volume increases during at least a part of the pushing-over step and, at the end thereof, the volume is less than 15% of its maximum volume.
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