APPARATUS, SYSTEM, AND METHOD FOR REGENERATING AN EXHAUST GAS TREATMENT DEVICE

摘要

An apparatus, system, and method are disclosed for regenerating an exhaust gas treatment device. A controller module 115 directs an injector 110 to provide reductant to an exhaust gas treatment device 105 over a plurality of rich intervals during a regeneration cycle. In addition, the controller module 115 directs the injector 110 to reduce the reductant provided to the exhaust gas treatment device over a lean interval between the rich intervals to create a lean environment within the exhaust gas treatment device 105. In one embodiment, the controller module 115 modifies the reductant provided during each rich interval, the number of rich intervals, the length of the rich intervals, and the length of the lean intervals in response to an exhaust gas state.