System and method for controlling operation of exhaust gas treatment apparatus

An engine system (100, fig 1) comprises an engine, a selective catalytic reduction (SCR) module (124, fig 1) and a controller (152, fig 1). A method for controlling operations of the SCR module includes, prior to a time-initiated cleaning event to clear the SCR module of sulphur accumulation, determ...

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Bibliographische Detailangaben
Hauptverfasser:	Anthony James Eager, Soundarrajan Krishnakanthan, Max Brian Raymond
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	An engine system (100, fig 1) comprises an engine, a selective catalytic reduction (SCR) module (124, fig 1) and a controller (152, fig 1). A method for controlling operations of the SCR module includes, prior to a time-initiated cleaning event to clear the SCR module of sulphur accumulation, determining 280 whether fuel for combustion in an engine (104, fig 1) comprises a high sulphur content. If fuel with a high sulphur content is determined, a mode of the engine is activated 290 to increase a temperature of an exhaust gas entering into the SCR module to assist with conversion of nitrogen oxides (NOx) such that a rate of drop in an efficiency of the conversion is lowered and the SCR module is allowed to reach up to the time-initiated cleaning event with the efficiency of the conversion being maintained at least equal to or higher than an efficiency threshold.