NH3 slip control strategies of selective catalytic reduction aftertreatment system

What is it about?

NH3 slip is strictly limited by emission regulations, the peak value of NH3 slip is limited to 10 ppm by Euro VI. Because the inertia of SCR system is very large and NH3 sensor has not been comercially available, this small value is very difficult to control. This paper simple control strategie to control the sdsorption of NH3 in the SCR catlyst, therefore, NH3 slip is prevented.

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Why is it important?

This control strategy is simple and effective to optimize the control performance of current open-loop SCR controllers.

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