Method for controlling an exhaust gas treatment system

A method for controlling an exhaust gas treatment system is provided. The exhaust gas treatment system includes an exhaust gas stream supplied by an exhaust gas source to a selective catalytic reduction device, and a reductant supply source utilizing a volumetric pump. The exhaust gas source can include an internal combustion engine (ICE), such as a gasoline or diesel ICE. The method for controlling an exhaust gas treatment system includes commanding a reductant dosing quantity, determining a volumetric pump energizing time, determining an energizing time correction, and energizing the pump. The volumetric pump can comprise pump logic, and the volumetric pump energizing time can be determined by the pump logic. The energizing time correction can be determined using a calibration table. Thecalibration table can prescribe an energizing time correction based on a current pump pressure and the commanded dosing quantity. 提供了种用于控制废气处理系统的方法。废气处理系统包括由废气源供应至选择性催化还原装置的废气流以及利用容积泵的还原剂供应源。废气源可包括内燃机(ICE)，诸如汽油或柴油ICE。用于控制废气处