Control device for internal combustion engine
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United States of America Patent
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Apr 17, 2018
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N/A
app pub date -
May 15, 2015
filing date -
May 26, 2014
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Abstract
There is provided an art of performing correction of a coefficient in a model calculation formula of an intake valve model that is applied to an internal combustion engine including a turbocharger, in a wide engine operation region. An amendment value α of a map value a in a correction value calculating operation region is calculated (step 10), and a straight line expressing a relation of a turbocharging pressure Pcmp and a cylinder air filling rate KL is calculated (step S14). A point (Pcmpn, KLn) on the calculated straight line is specified (step S16), and correction of the map value a is performed (step S18). Thereby, a correction value a′ of the map value a in an operation region that differs in the turbocharging pressure Pcmp from the correction value calculating operation region is calculated. Similarly, the correction value a′ of the map value a in an operation region that differs in valve opening timing EXVT from the correction value calculating operation region, and the correction value a′ of the map value a in an operation region that differs in an engine speed NE from the correction value calculating operation region are calculated (steps S20 and S22).
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