Method for providing a mixture of air and exhaust
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United States of America Patent
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Sep 22, 2009
Grant Date -
Jul 10, 2008
app pub date -
Dec 13, 2007
filing date -
Dec 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method for providing a mixture of inlet air and exhaust gas in a cylinder of an internal combustion engine is disclosed. Fluid flow between the cylinder and a cylinder head associated therewith is controlled by at least one rotary valve accommodated in the cylinder head. The method includes rotating the at least one rotary valve to allow a fluid flow between the cylinder and the cylinder head in a first direction and to allow a fluid flow between the cylinder and the cylinder head in a second direction, opposite the first direction, wherein the fluid flow in the first direction and the fluid flow in the second direction are allowed during a single combustion cycle of the engine.
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