Abstract: A system includes an aftertreatment system configured to treat emissions from an engine via a catalyst and a controller. The controller is configured to obtain one or more engine signals representative of operations of the engine and to execute a model to derive an estimated catalyst emission based on the one or more engine signals and on an expected catalyst degradation. The controller is further configured to obtain one or more catalyst signals representative of catalyst performance, and to generate an adaptation signal configured to improve accuracy of the model based on the one or more catalyst signals. The controller is also configured to apply the adaptation signal and the estimated catalyst emission to generate an engine control signal.

Abstract: A system includes an aftertreatment system configured to treat emissions from an engine via a catalyst and a controller. The controller is configured to obtain one or more engine signals representative of operations of the engine and to execute a model to derive an estimated catalyst emission based on the one or more engine signals and on an expected catalyst degradation. The controller is further configured to obtain one or more catalyst signals representative of catalyst performance, and to generate an adaptation signal configured to improve accuracy of the model based on the one or more catalyst signals. The controller is also configured to apply the adaptation signal and the estimated catalyst emission to generate a urea injection control signal.