Apparatus for estimating quantity of intake air for internal combustion engine
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United States of America Patent
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Apr 3, 2007
Grant Date -
Dec 23, 2004
app pub date -
Oct 15, 2002
filing date -
Oct 15, 2001
priority date (Note) -
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Abstract
An intake-air quantity estimation apparatus for an internal combustion engine, including an intake-air quantity estimation device that includes a cylinder pressure estimation device that estimates pressure within a cylinder through calculation using a model of the cylinder obtained based on a law of conservation of energy, the intake-air quantity estimation device estimates a cylinder intake-air quantity based on the estimated pressure within the cylinder, the cylinder intake-air quantity representing the amount of air flowing into the cylinder.
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