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US 10,621,291 B2Granted
Approach for aftertreatment system modeling and model identification
AssigneeGarrett Transportation I Inc.
InventorsJaroslav Pekar, Gregory Stewart, Ondrej Santin, Daniel Pachner
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Abstract
A system and approach for catalyst model parameter identification with modeling accomplished by an identification procedure that may incorporate a catalyst parameter identification procedure which may include determination of parameters for a catalyst device, specification of values for parameters and component level identification. Component level identification may be of a thermal model, adsorption and desorption, and chemistry. There may then be system level identification to get a final estimate of catalyst parameters.
Claims6
An aftertreatment system comprising:
- a catalyst device configured to treat an output from an engine exhaust;
- and
- a controller including a catalyst model for the catalyst device, the controller configured to control operation of the catalyst device based on the catalyst model and the catalyst model comprises:
- a thermal model component;
- an adsorption and desorption component;
- a chemical reaction component;
- and
- a global component;
- and
- wherein:
- the thermal model component includes parameters representing heat transfer of the catalyst device, the heat transfer of the catalyst includes heat transfer from gas to monolith, heat transfer from monolith to housing, and heat transfer from housing to ambient;
- the adsorption and desorption component includes parameters that incorporate a storage of chemical species for reaction;
- and
- the chemical reaction component includes parameters that incorporate a reaction mechanism for chemical reactions.
11 more elements
Dependencies are inferred from the claim text.