Method and device for correlating cylinder charge and maximum intake valve lift of internal combustion engine
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United States of America Patent
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Dec 18, 2012
Grant Date -
Sep 23, 2010
app pub date -
Jul 30, 2009
filing date -
Mar 18, 2009
priority date (Note) -
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Abstract
A method for determining a cylinder charge of an internal-combustion engine having valves with a variable valve gear, may include determining a maximum intake valve lift, calculating a standardized cylinder charge relative to at least one of a defined intake spread of an intake valve opening phase and a defined exhaust spread of an exhaust valve opening phase, as a function of the maximum intake valve lift, determining an overlap value, which characterizes an actual overlap of the intake valve opening phase and the exhaust valve opening phase, and determining a corrected cylinder charge based on the standardized cylinder charge and the overlap value.
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