International Engine Intellectual Property Company, LLC

Vadim Olegovich Strots

Brad J Adelman

Shyam Santhanam

Michael James Miller

Paul Laurence Berke

Edward M Derybowski

A method for injecting ammonia into an exhaust gas stream downstream of a diesel engine includes providing an exhaust gas passageway () from the diesel engine to an ambient (). The exhaust gas passageway () includes an NOx Slip Catalyst (NSC)downstream of an NOx Particulate Filter (NPF). The method includes emitting exhaust gas (EG) through the exhaust gas passageway (), and selectively injecting ammonia (NH3) upstream of the NPF, upstream of the NSC (), both upstream of the NPF and the NSC, or not injecting ammonia, depending on the temperature of the exhaust gas at the NPF and at the NSC.

System and method for injecting ammonia into an exhaust gas stream

A method () for injecting ammonia (NH) into exhaust gas upstream of a catalyst of an aftertreatment system includes the steps of determining whether a regeneration event is imminent () on the basis of predetermined parameters, and determining whether dosing parameters are met (). The method () further includes the steps of calculating an amount of NHto fill the catalyst () and adjusting a quantity of NHdosed () before the regeneration event occurs.

Method for injecting ammonia into an exhaust gas stream

A device and method for catalytic reduction of NOx in gaseous products of a combustion process before entry into the atmosphere. The gaseous and particulate products of a combustion process flow radially through a radial flow particulate filter element () that is effective to trap particulate matter, and are then directed axially through a collector (). An injector () introduces a reductant into an axial end of the collector for entrainment with axial flow through the collector in a direction away from the injector. Flow leaving the collector is directed through an SCR catalyst () where catalytic reduction of NOx occurs.

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Forest Park, IL, United States of America

Vadim Olegovich Strots