Abstract: A method of reducing nitrogen oxides (NOx) and particulate matter (PM) in compression ignition engine emissions. The method includes monitoring at least one engine sensor that generates a signal in response to at least one engine operating condition, and adjusting at least one engine control parameter in response to the signal such that in-cylinder spacial distribution of equivalence ratio and temperature is substantially maintained to an operating region. The operating region corresponds to a set of equivalence ratio with respect to temperature values that are substantially outside regions supportive of NOx and PM formation. The temperature values are greater than 1650 K, and the equivalence ratio values are greater than 0.5.

Abstract: A method of controlling injection of a reducing agent in an engine emissions control system. The method includes determining a predicted amount of reducing agent in a selective catalytic reduction system, comparing the predicted amount to a target amount, injecting reducing agent when the predicted amount is less than the target amount, and inhibiting injection of reducing agent when the predicted amount is not less than the target amount.

Abstract: Method, system, and controller for increasing exhaust gas temperatures through controlled operation of a radiator fan in order to facilitate regeneration of a particulate filter. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates which are captured by the particulate filter.

Abstract: Method, system, and controller for controlling fuel included within exhaust gases to facilitate regeneration of a particulate filter. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates which are captured by the particulate filter.

Abstract: Method, system, and controller for determining a temperature set point for use in controlling regeneration of a particulate filter. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates which are captured by the particulate filter.