Mult-mode controls for engines systems including SCR aftertreatment

A method of controlling a system including an internal combustion engine, an exhaust aftertreatment system including an SCR catalyst operatively coupled with the engine, and an electronic control system in operative communication with the engine and the exhaust aftertreatment system, the method comprising:

• operating the electronic control system to perform the acts of
• providing a first dynamically determined weighting factor in response to performing a selected one of a plurality of calculations, the plurality calculations utilizing at least one of different inputs pertaining to operation of the SCR catalyst, and different calculations pertaining to operation of the SCR catalyst,
• determining an operating mode of the engine in response to an engine load and an engine speed,
• selecting one of a plurality of inputs in response to the operating mode of the engine to provide an interpolation weighting factor, the plurality of inputs including the first dynamically determined weighting factor, and one or more predetermined weighting factors,
• utilizing the interpolation weighting factor to interpolate between a first set of combustion control data and a second set of combustion control data to determine a set of combustion control values, and
• controlling operation of the engine using the set of combustion control values.

An electronic control system adapted to control a system including an internal combustion engine and an exhaust aftertreatment system including an SCR catalyst operatively coupled with the engine, the electronic control system comprising:

• a controller;
• and
• a non-transitory controller-readable memory structured with instructions executable by the controller to
• provide a first dynamically determined weighting factor in response to performing a selected one of a plurality of calculations, the plurality calculations utilizing at least one of different inputs pertaining to operation of the SCR catalyst, and different calculations pertaining to operation of the SCR catalyst,
• determine an operating mode of the engine in response to an engine load and an engine speed,
• select one of a plurality of inputs in response to the operating mode of the engine to provide an interpolation weighting factor, the plurality of inputs including the first dynamically determined weighting factor and one or more predetermined weighting factors,
• utilize the interpolation weighting factor to interpolate between a first set of combustion control data and a second set of combustion control data to determine a set of combustion control values, and
• control operation of the engine using the set of combustion control values.