公开(公告)号：US20180306082A1

公开(公告)日：2018-10-25

申请号：US15496723

申请日：2017-04-25

Applicant: GM Global Technology Operations LLC

Inventor： Carlos Ildefonso Hoyos Velasco ,  Vincenzo Alfieri ,  Maria Camuglia ,  Giuseppe Conte ,  Giuseppe Mazzara Bologna ,  Carmen Pedicini ,  David Tulli

IPC: F01N3/20 ,  F01N11/00

CPC classification number: F01N3/2073 ,  F01N3/208 ,  F01N9/00 ,  F01N11/007 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/0404 ,  F01N2900/1616 ,  F01N2900/1622

Abstract: An automotive vehicle includes an internal combustion engine and an exhaust system. The exhaust treatment system includes a dosing system that injects NH3 into an exhaust gas stream generated by the engine. An SCR device stores an amount of the NH3 and converts NOx into diatomic nitrogen (N2) and water (H2O) based on the stored amount of the NH3. The vehicle further includes an SCR status estimator device and a controller. The SCR status estimator device determines an NH3 coverage ratio (R), which indicates a stored amount of NH3 with respect to a maximum NH3 storage capacity of the SCR device. The controller determines a target NOx reduction efficiency (ηNOx) of the SCR device, and an NH3 coverage ratio set point (Rsp) based on the ηNOx. The controller also generates an NH3 control signal (u) that controls the dosing system based on a comparison between the R and the Rsp.

公开(公告)号：US10465589B2

公开(公告)日：2019-11-05

申请号：US15925116

申请日：2018-03-19

Applicant: GM Global Technology Operations LLC

Inventor： Alessandra Neri ,  Alessia Tuninetti ,  Maria Camuglia ,  Giulio Binetti ,  Giuseppe Mazzara Bologna ,  Alberto Bemporad ,  Daniele Bernardini

IPC: F01N11/00 ,  F01N3/20

Abstract: Technical solutions are described for selective catalytic reduction diagnosis in an emissions control system or an exhaust system used for treating exhaust gas, such as in a motor vehicle including an internal combustion engine. An example emissions control system includes a selective catalytic reduction (SCR) device. The emissions control system further includes a controller that is performs SCR fault diagnosis. The SCR fault diagnosis includes computing a plurality of estimated NH3 storage capacity values (Θ) of an SCR catalyst of the SCR device. The diagnosis further includes determining a diagnostic parameter of the SCR device using the plurality of estimated NH3 storage capacity values.

公开(公告)号：US20200065690A1

公开(公告)日：2020-02-27

申请号：US16109194

申请日：2018-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alessandra Neri ,  Maria Camuglia ,  Alessia Tuninetti ,  Elena Baralis ,  Flavio Giobergia ,  Davide Tricarico

IPC: G06N5/04 ,  G07C5/08

Abstract: A system and method of determining system status in a vehicle system. The method including collecting, by a computing system, a plurality of data associated with a test specimen and the vehicle system, selecting a relevant data set of the plurality of data, the selecting based on at least one correlation coefficient associated with the plurality of data, and transforming at least a portion of the selected relevant data to form a transformed data set, the transforming based on mathematical properties. The method also includes collecting statistics associated with the selected relevant data set and the transformed data set to form a statistics data set, classifying the selected relevant data set, transformed data set, and the statistics data set; and predicting a status of a system based on the classifying.

公开(公告)号：US20190353071A1

公开(公告)日：2019-11-21

申请号：US15983751

申请日：2018-05-18

Applicant: GM Global Technology Operations LLC

Inventor： Maria Camuglia ,  Giulio Binetti ,  Carlos Ildefonso Hoyos Velasco ,  Giuseppe Mazzara Bologna ,  Alberto Bemporad ,  Daniele Bernardini

IPC: F01N3/20

Abstract: Technical solutions described herein include an emissions control system for treating exhaust gas in a motor vehicle including an internal combustion engine. The emissions control system includes a model-based controller to control reductant injection into the exhaust gas. Controlling the reductant injection includes determining an amount of NOx and an amount of NH3 at an outlet of the first SCR device, and at an outlet of the second SCR device. The controlling further includes computing an amount of reductant to inject to maintain a first predetermined ratio between the amount of NH3 and the amount of NOx at the outlet of the first SCR device and to maintain a second predetermined ratio between the amount of NH3 and the amount of NOx at the outlet of the second SCR device. Further, the controlling includes sending a command for receipt by the reductant injector to inject the computed amount of reductant.

公开(公告)号：US11423321B2

公开(公告)日：2022-08-23

申请号：US16109194

申请日：2018-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alessandra Neri ,  Maria Camuglia ,  Alessia Tuninetti ,  Elena Baralis ,  Flavio Giobergia ,  Davide Tricarico

IPC: G06N5/04 ,  G07C5/08

Abstract: A system and method of determining system status in a vehicle system. The method including collecting, by a computing system, a plurality of data associated with a test specimen and the vehicle system, selecting a relevant data set of the plurality of data, the selecting based on at least one correlation coefficient associated with the plurality of data, and transforming at least a portion of the selected relevant data to form a transformed data set, the transforming based on mathematical properties. The method also includes collecting statistics associated with the selected relevant data set and the transformed data set to form a statistics data set, classifying the selected relevant data set, transformed data set, and the statistics data set; and predicting a status of a system based on the classifying.

公开(公告)号：US20190284981A1

公开(公告)日：2019-09-19

申请号：US15925116

申请日：2018-03-19

Applicant: GM Global Technology Operations LLC

Inventor： Alessandra Neri ,  Alessia Tuninetti ,  Maria Camuglia ,  Giulio Binetti ,  Giuseppe Mazzara Bologna ,  Alberto Bemporad ,  Daniele Bernardini

IPC: F01N11/00 ,  F01N3/20

Abstract: Technical solutions are described for selective catalytic reduction diagnosis in an emissions control system or an exhaust system used for treating exhaust gas, such as in a motor vehicle including an internal combustion engine. An example emissions control system includes a selective catalytic reduction (SCR) device. The emissions control system further includes a controller that is performs SCR fault diagnosis. The SCR fault diagnosis includes computing a plurality of estimated NH3 storage capacity values (Θ) of an SCR catalyst of the SCR device. The diagnosis further includes determining a diagnostic parameter of the SCR device using the plurality of estimated NH3 storage capacity values.

公开(公告)号：US10145284B2

公开(公告)日：2018-12-04

申请号：US15496723

申请日：2017-04-25

Applicant: GM Global Technology Operations LLC

Inventor： Carlos Ildefonso Hoyos Velasco ,  Vincenzo Alfieri ,  Maria Camuglia ,  Giuseppe Conte ,  Giuseppe Mazzara Bologna ,  Carmen Pedicini ,  David Tulli

IPC: F01N3/00 ,  F01N3/20 ,  F01N11/00

Abstract: An automotive vehicle includes an internal combustion engine and an exhaust system. The exhaust treatment system includes a dosing system that injects NH3 into an exhaust gas stream generated by the engine. An SCR device stores an amount of the NH3 and converts NOx into diatomic nitrogen (N2) and water (H2O) based on the stored amount of the NH3. The vehicle further includes an SCR status estimator device and a controller. The SCR status estimator device determines an NH3 coverage ratio (R), which indicates a stored amount of NH3 with respect to a maximum NH3 storage capacity of the SCR device. The controller determines a target NOx reduction efficiency (ηNOx) of the SCR device, and an NH3 coverage ratio set point (Rsp) based on the ηNOx. The controller also generates an NH3 control signal (u) that controls the dosing system based on a comparison between the R and the Rsp.