Method and system for thermal control of aftertreatment
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United States of America Patent
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Sep 28, 2021
Grant Date -
Jan 28, 2021
app pub date -
Jul 23, 2019
filing date -
Jul 23, 2019
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Abstract
A method for controlling an internal combustion engine system including a catalyst includes receiving a desired output for an internal combustion engine, and receiving sensor information including information indicative of a temperature of the catalyst. The method includes calculating a plurality of sets of engine performance values based on respective sets of candidate control points, the engine performance values including a temperature change rate at which the temperature of the catalyst changes over time, and determining whether the temperature change rate satisfies a minimum warmup rate for the catalyst. The method also includes controlling the internal combustion engine based on a selected set of candidate control points and the minimum warmup rate.
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