ENGINE NOX MODEL
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United States of America Patent
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Issued Date -
Apr 14, 2016
app pub date -
May 24, 2013
filing date -
May 24, 2013
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Abstract
A method is provided for estimating the NOx content of exhaust gas produced by an internal combustion engine. The method includes determining a first NOx estimate corresponding to the NOx level output by the engine during a first engine operating condition. The method further includes determining a second NOx estimate corresponding to the NOx level output by the engine during a second engine operating condition. The method further includes determining a compensation factor based on intake manifold pressure and applying the compensation factor to the first and second NOx estimates to arrive at a final NOx estimate.
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