公开(公告)号：US20180119631A1

公开(公告)日：2018-05-03

申请号：US15341366

申请日：2016-11-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alberto Lorenzo Vassallo ,  Claudio Cortassa ,  Denise Risso ,  Luca Giuseppe Pairolero

IPC: F02D41/22 ,  F01N3/021 ,  F02D41/02 ,  F01N13/00 ,  F01N9/00 ,  F02D41/40

CPC classification number: F02D41/222 ,  F01N3/021 ,  F01N9/002 ,  F01N9/005 ,  F01N11/00 ,  F01N13/008 ,  F01N2340/06 ,  F01N2560/05 ,  F01N2560/20 ,  F01N2900/1606 ,  F02D41/029 ,  F02D41/1441 ,  F02D41/1463 ,  F02D41/1495 ,  F02D41/405 ,  F02D2200/0812

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.

公开(公告)号：US10132262B2

公开(公告)日：2018-11-20

申请号：US15341366

申请日：2016-11-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alberto Lorenzo Vassallo ,  Claudio Cortassa ,  Denise Risso ,  Luca Giuseppe Pairolero

IPC: F01N3/021 ,  F02D41/22 ,  F01N9/00 ,  F01N13/00 ,  F02D41/02 ,  F02D41/40 ,  F01N11/00 ,  F02D41/14

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.