Ammoniakspeicherungs-Sollwertsteuerung für Anwendungen für selektive katalytische Reduktion

摘要

A system includes an injector control module and an SCR optimization module. The injector control module controls an amount of ammonia (NH3) stored in a selective catalytic reduction (SCR) catalyst to maintain a first storage level. The SCR optimization module determines whether the first storage level maximizes a conversion efficiency of the SCR catalyst at a first temperature and minimizes a probability of NH3 slip when the temperature of the SCR catalyst transitions from the first temperature to a second temperature. The injector control module controls the amount of NH3 stored in the SCR catalyst to maintain a second storage level when the second storage level maximizes the efficiency of the SCR catalyst relative to the first storage level and minimizes the probability of NH3 slip relative to the first storage level.