METHOD AND CONTOL SYSTEM FOR CONTROL OF DOSAGE OF A REDUCING AGENT

Disclosed is a method for control of dosage of a reducing agent into an exhaust stream, which includes: determining at least one sensor signal SNOx from at least one nitrogen oxides NOx sensor arranged downstream of at least one of the one or more reduction catalysts as at least one sensor correctio...

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Bibliographische Detailangaben
1. Verfasser:	LUNDBERG, Christer
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING 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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed is a method for control of dosage of a reducing agent into an exhaust stream, which includes: determining at least one sensor signal SNOx from at least one nitrogen oxides NOx sensor arranged downstream of at least one of the one or more reduction catalysts as at least one sensor correction value SNOx_corr, respectively, if: 1) the engine rotates without fuel supply; 2) an exhaust mass flow M′exh is greater than an exhaust mass flow threshold M′exh_th; M′exh>M′exh_th; and 3) the sensor signal SNOx has had a value smaller than a sensor signal threshold SNOx_th; SNOx