Method of controlling ammonia amount absorbed in selective catalytic reduction catalyst and exhaust system using the same

Method of controlling ammonia amount absorbed in selective catalytic reduction catalyst and exhaust system using the same

A method of controlling ammonia (NH3) amount absorbed in a selective catalytic reduction (SCR) catalyst may include determining a target NH3 absorption amount considering a safety factor on a basis of NH3 absorption characteristics according to a temperature of the SCR catalyst, determining a predic...

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Bibliographische Detailangaben
1. Verfasser: Cho Jiho
Format: Patent
Sprache:eng
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:A method of controlling ammonia (NH3) amount absorbed in a selective catalytic reduction (SCR) catalyst may include determining a target NH3 absorption amount considering a safety factor on a basis of NH3 absorption characteristics according to a temperature of the SCR catalyst, determining a predicted NH3 reaction amount according to a current driving condition, and controlling injection of urea according to the target NH3 absorption amount and the predicted NH3 reaction amount.