US 12,241,395 B1Granted

Techniques for calibrating a catalytic converter simulation

AssigneeFca US LLC

InventorJohn P Wilson

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Abstract

Techniques for calibrating a catalyst model for a chemical reaction by a catalyst (e.g., a vehicle three-way catalytic converter) including optimizing an A-value for the chemical reaction by running the catalyst model and adjusting the A-value until results of the catalyst model are within a first threshold of the test data and setting the A-value to the optimized A-value, optimizing an E-value for the chemical reaction by running the catalyst model and adjusting the E-value until the catalyst model results are minimized relative to the test data within a second threshold of the test data, determining a new A-value based on the optimized E-value and setting the A-value to the new A-value and the E-value to the optimized E-value, and determining a reoptimized A-value by running the catalyst model and adjusting the A-value until the catalyst model results are within a third threshold of the test data.

Claims20

Dependent claims

A calibration system for a catalyst model for a catalyst, the calibration system comprising:

a test data database configured to store test data relating to the operation and production of exhaust gas by a source and treatment of the exhaust gas by the catalyst;
and
a computer system configured to generate and calibrate the catalyst model for a chemical reaction by the catalyst, the catalyst model being based on the Arrhenius equation and defined by an A-value representing a pre-exponential factor and an E-value representing an activation energy, including:
optimizing the A-value by running the catalyst model and adjusting the A-value until results of the catalyst model are within a first threshold of the test data and setting the A-value to the optimized A-value;
optimizing the E-value by running the catalyst model and adjusting the E-value until the catalyst model results are minimized relative to the test data within a second threshold of the test data;
determining a new A-value based on the optimized E-value and setting the A-value to the new A-value and the E-value to the optimized E-value;
and
determining a reoptimized A-value by running the catalyst model and adjusting the A-value until the catalyst model results are within a third threshold of the test data.

5 more elements

A calibration method for a catalyst model for a catalyst, the calibration method comprising:

establishing a test data database storing test data relating to the operation and production of exhaust gas by a source and treatment of the exhaust gas by the catalyst;
generating, by a computer system, a model for a chemical reaction by the catalyst, the model being based on the Arrhenius equation and defined by an A-value representing a pre-exponential factor and an E-value representing an activation energy;
and
calibrating, by the computer system, the catalyst model by:
optimizing the A-value by running the catalyst model and adjusting the A-value until results of the catalyst model are within a first threshold of the test data and setting the A-value to the optimized A-value;
optimizing the E-value by running the catalyst model and adjusting the E-value until the catalyst model results are minimized relative to the test data within a second threshold of the test data;
determining a new A-value based on the optimized E-value and setting the A-value to the new A-value and the E-value to the optimized E-value;
and
determining a reoptimized A-value by running the catalyst model and adjusting the A-value until the catalyst model results are within a third threshold of the test data.

6 more elements

Dependencies are inferred from the claim text.