Patent ID: 7533524

Claim:
A system for controlling soot regeneration in a catalyst soot filter (“CSF”), including: a engine control module (“ECM”) configured to determine, based on a current exhaust flow value, a target light off temperature of a diesel oxidation catalyst (“DOC”) having an inlet that receives exhaust gas and an outlet that provides exhaust gas to an inlet of the CSF; and a first temperature sensor configured to provide a first temperature signal representing a temperature of the exhaust gas at the inlet of the DOC; the ECM further including a first comparator that outputs a first difference signal representing the difference between the target light off temperature and the first temperature signal, and a first feed-forward model that calculates a first amount of post injection fuel needed to cause the first temperature signal to equal the target light off temperature, the ECM outputting a first command signal corresponding to the calculated first amount of fuel to a fuel pump that injects a first amount of fuel into a cylinder of the engine, combustion of the first amount of fuel thereby causing the first temperature signal to approach the target light off temperature.