公开(公告)号：US11203964B2

公开(公告)日：2021-12-21

申请号：US16523323

申请日：2019-07-26

Applicant: GM Global Technology Operations LLC

Inventor： Bryan D. Axe ,  Gaetano Di Venti ,  Francesco Cannarile

IPC: F01N13/00 ,  F01N3/021 ,  B08B3/08 ,  G01N15/06 ,  G01N15/00

Abstract: A vehicle particulate matter contamination recovery system includes a particulate matter filter receiving exhaust gas from an engine. A particulate matter sensor is positioned downstream of the particulate matter filter, the particulate matter sensor collecting a non-combustible contaminant on a circuit of the particulate matter sensor and generating a current indicating presence of the non-combustible contaminant. A total volume of water collected during multiple cold start operations of the engine is passed onto the sensor acting to at least partially dissolve the non-combustible contaminant. The particulate matter sensor is operated in a remedial action mode of operation having no voltage applied to the circuit of the particulate matter sensor until a quantity of the cold start operations corresponding to the total volume of water is reached.

公开(公告)号：US10480440B2

公开(公告)日：2019-11-19

申请号：US15810185

申请日：2017-11-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alessandro Ormando ,  Francesco Cannarile

IPC: F02D41/14 ,  G01N15/06 ,  G01N7/10 ,  F01N13/00

Abstract: A heat cover for a particulate matter sensor includes an aluminum foil external layer and an internal layer made from a composition including SiO2 of between 52-60%, CaO of between 16-25%, and Al2O2 of between 12-16%. The heat cover is formed as a sleeve structure and includes an open end for receiving the particulate matter sensor.

公开(公告)号：US10914223B1

公开(公告)日：2021-02-09

申请号：US16523317

申请日：2019-07-26

Applicant: GM Global Technology Operations LLC

Inventor： Bryan D. Axe ,  Gaetano Di Venti ,  Francesco Cannarile

IPC: F01N11/00 ,  F01N13/00

Abstract: A method for mitigating against failure of a particulate matter sensor of an automobile vehicle includes: determining if a key-off event is present, identifying an engine is off in a vehicle after-run mode; defining when local environmental conditions are outside of mechanical limits of a particulate matter (PM) sensor; identifying input values to reverse the local environmental conditions of the PM sensor; and controlling operation of a heating element of the PM sensor to achieve the input values to reverse the local environmental conditions during the vehicle after-run mode.

公开(公告)号：US20210025313A1

公开(公告)日：2021-01-28

申请号：US16523323

申请日：2019-07-26

Applicant: GM Global Technology Operations LLC

Inventor： Bryan D. Axe ,  Gaetano Di Venti ,  Francesco Cannarile

IPC: F01N13/00 ,  F01N3/021 ,  G01N15/06 ,  B08B3/08

Abstract: A vehicle particulate matter contamination recovery system includes a particulate matter filter receiving exhaust gas from an engine. A particulate matter sensor is positioned downstream of the particulate matter filter, the particulate matter sensor collecting a non-combustible contaminant on a circuit of the particulate matter sensor and generating a current indicating presence of the non-combustible contaminant. A total volume of water collected during multiple cold start operations of the engine is passed onto the sensor acting to at least partially dissolve the non-combustible contaminant. The particulate matter sensor is operated in a remedial action mode of operation having no voltage applied to the circuit of the particulate matter sensor until a quantity of the cold start operations corresponding to the total volume of water is reached.

公开(公告)号：US20210025312A1

公开(公告)日：2021-01-28

申请号：US16523317

申请日：2019-07-26

Applicant: GM Global Technology Operations LLC

Inventor： Bryan D. Axe ,  Gaetano Di Venti ,  Francesco Cannarile

IPC: F01N11/00 ,  F01N13/00

Abstract: A method for mitigating against failure of a particulate matter sensor of an automobile vehicle includes: determining if a key-off event is present, identifying an engine is off in a vehicle after-run mode; defining when local environmental conditions are outside of mechanical limits of a particulate matter (PM) sensor; identifying input values to reverse the local environmental conditions of the PM sensor; and controlling operation of a heating element of the PM sensor to achieve the input values to reverse the local environmental conditions during the vehicle after-run mode.