Various embodiments of an apparatus, system, and method are disclosed for controlling NO
x conversion in a selective catalytic reduction (SCR) system. According to one …

For example, according to one representative embodiment, an apparatus for reducing NO x
emissions in an engine exhaust includes a NO x reduction target module configured to …

BACKGROUND Emissions regulations for internal combustion engines have become more
stringent over recent years. The regulated emissions of NO, and particulates from internal …

According to one representative embodiment, an apparatus for reducing NO emissions in an
engine exhaust gas stream of an engine system having a selective catalytic reduction (SCR) …

Various embodiments of an apparatus, system, and method are disclosed for manipulating
the properties of engine exhaust at least partially through the engine's control system to …

It is possible to decrease the amount of NOx emitted into the air. The amount of ammonia
adsorbed on an SCR catalyst is calculated by Subtracting the amount of ammonium nitrate …

According to one embodiment, described herein is an exhaust gas after-treatment system
that is coupleable in exhaust gas stream receiving communication with an internal …

US PATENT DOCUMENTS 5,552,128 A 9/1996 Chang et al. 6,109,024 A 8/2000 Kinguasa
et al. 6,125,629 A 10, 2000 Patchett 6,182,443 B1 2/2001 Jarvis et al. 6,266.955 B1 7/2001 …

An aftertreatment assembly includes a selective catalytic reduction (SCR) device having a
catalyst and configured to receive an exhaust gas. A controller is operatively connected to …

According to one representative embodiment, an apparatus for controlling reductant dosing
in an SCR catalyst system having a reductant injection system configured to inject reductant …