Abstract: Methods for optimizing exhaust gas system regeneration and cleaning are provided. The exhaust gas system can include an exhaust gas stream supplied by an exhaust gas source to a particulate filter device through an exhaust gas conduit, and a gas sensor having a sampling end disposed within the exhaust gas conduit upstream from the particulate filter device. The methods can include detecting a gas sensor malfunction, detecting particulate filter device soot loading, and performing an optimized maintenance utilizing at least one common technique. A common technique is one which is capable of cleaning a gas sensor and regenerating a PF device. The exhaust gas source can comprise an internal combustion engine and the at least one common technique comprises a post-injection strategy. Systems for performing the disclosed methods are also provided.

Abstract: Methods for optimizing exhaust gas system regeneration and cleaning are provided. The exhaust gas system can include an exhaust gas stream supplied by an exhaust gas source to a particulate filter device through an exhaust gas conduit, and a gas sensor having a sampling end disposed within the exhaust gas conduit upstream from the particulate filter device. The methods can include detecting a gas sensor malfunction, detecting particulate filter device soot loading, and performing an optimized maintenance utilizing at least one common technique. A common technique is one which is capable of cleaning a gas sensor and regenerating a PF device. The exhaust gas source can comprise an internal combustion engine and the at least one common technique comprises a post-injection strategy. Systems for performing the disclosed methods are also provided.