公开(公告)号：US20170234198A1

公开(公告)日：2017-08-17

申请号：US15042663

申请日：2016-02-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles E. Dean

IPC: F01N9/00 ,  B60W30/18 ,  B60W10/06 ,  B60W10/11 ,  F01N3/023 ,  F01N3/025

CPC classification number: F01N9/002 ,  B60W10/06 ,  B60W10/11 ,  B60W30/18 ,  B60W2510/1005 ,  B60W2520/10 ,  B60W2530/12 ,  B60W2560/00 ,  B60W2710/0644 ,  B60W2710/1005 ,  B60W2900/00 ,  F01N3/023 ,  F01N3/0253 ,  F01N2260/04 ,  F01N2550/04 ,  F01N2560/08 ,  F01N2900/10 ,  F01N2900/1606 ,  Y02T10/47

Abstract: A system and method of reducing particulate matter accumulation in a diesel particulate filter of an exhaust system of a vehicle comprises operating the vehicle including an engine connected to the exhaust system in a drive mode. At least one parameter indicative of particulate matter accumulation in the diesel particulate filter is monitored and evaluated against a predetermined particulate matter accumulation limit. Control logic determines at least one operating parameter of the vehicle and adjusts the transmission assembly from a first transmission position to at least one second transmission position to increase engine speed and generate higher exhaust gas flow when the particulate matter accumulation is greater than the predetermined particulate matter accumulation to regenerate the diesel particulate filter.

公开(公告)号：US10344657B2

公开(公告)日：2019-07-09

申请号：US15042663

申请日：2016-02-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles E. Dean

IPC: F01N3/00 ,  F01N9/00 ,  B60W10/06 ,  B60W10/11 ,  B60W30/18 ,  F01N3/023 ,  F01N3/025

Abstract: A system and method of reducing particulate matter accumulation in a diesel particulate filter of an exhaust system of a vehicle comprises operating the vehicle including an engine connected to the exhaust system in a drive mode. At least one parameter indicative of particulate matter accumulation in the diesel particulate filter is monitored and evaluated against a predetermined particulate matter accumulation limit. Control logic determines at least one operating parameter of the vehicle and adjusts the transmission assembly from a first transmission position to at least one second transmission position to increase engine speed and generate higher exhaust gas flow when the particulate matter accumulation is greater than the predetermined particulate matter accumulation to regenerate the diesel particulate filter.

公开(公告)号：US10323559B1

公开(公告)日：2019-06-18

申请号：US15838823

申请日：2017-12-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sarah Funk ,  Charles E. Dean ,  Po-I Lee ,  David P. Quigley

IPC: F01N3/20

Abstract: A selective catalytic reduction device (SCR) system performs intrusive steady state dosing correction (SSDC) when a NOx error between a predicted and measured downstream NOx value exceeds a threshold. In SSDC, if NOx breakthrough or NH3 slip is detected above a SSDC threshold, a short term reductant dosing adaptation occurs. Optionally long term dosing adaptations occur if the magnitude of previous short term adaptations exceed a short term adaptation threshold. If SSDC is insufficiently improving SCR performance based on the number of intrusive events occurring within a period of time and the change in NOx error during the time period, a method includes modifying the SSDC protocol by one or more of increasing the duration of short term adaptations, decreasing the SSDC threshold, and reducing the short term adaptation threshold. The method further includes subsequently inhibiting intrusive events from occurring.

公开(公告)号：US20170234197A1

公开(公告)日：2017-08-17

申请号：US15042659

申请日：2016-02-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Charles E. Dean

IPC: F01N9/00 ,  F01N11/00 ,  F01N3/10 ,  B01D53/94 ,  F01N3/023

CPC classification number: F01N9/002 ,  B01D53/944 ,  B01D53/9495 ,  F01N3/0234 ,  F01N3/0253 ,  F01N3/103 ,  F01N11/002 ,  F01N2550/02 ,  F01N2900/1602 ,  Y02A50/2322 ,  Y02T10/47

Abstract: A system and method for diagnosing the oxidation catalyst of a vehicle includes an engine, an exhaust system in fluid communication with an exhaust port of the engine and an oxidation catalyst connected with the engine via the exhaust port to receive an exhaust stream from the engine. A controller is operable to determine the operating state of the engine and vehicle, calculate a heat release value for the oxidation catalyst and determine an ideal heat release value. The controller will determine the oxidation catalyst efficiency by calculating a ratio of the heat release value to the ideal heat release value.

公开(公告)号：US09732660B2

公开(公告)日：2017-08-15

申请号：US14955653

申请日：2015-12-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Luciano Nunziato Di Perna ,  Jianwen Li ,  Charles E. Dean ,  Rahul Mital ,  David B. Brown

IPC: F01N3/00 ,  F01N13/00 ,  F01N3/20 ,  F02B9/02

CPC classification number: F01N13/008 ,  F01N3/2006 ,  F01N3/206 ,  F01N3/2066 ,  F01N13/009 ,  F01N2370/02 ,  F01N2560/06 ,  F01N2560/20 ,  F02B9/02 ,  Y02A50/2325 ,  Y02T10/24

Abstract: An integrated sensor-catalyst is disclosed for an after-treatment (AT) system used to filter an exhaust gas flow emitted by an internal combustion engine. The integrated sensor-catalyst includes a sensor element configured to detect a parameter of the exhaust gas flow. The integrated sensor-catalyst also includes a micro-catalyst element configured to filter a pollutant from the exhaust gas flow. Additionally, the integrated sensor-catalyst includes a housing configured to hold the sensor element and the micro-catalyst element and fix the micro-catalyst element relative to the sensor element such that the micro-catalyst element is arranged and maintained in the exhaust gas flow upstream of the sensor element. A vehicle including such an AT system with the integrated sensor-catalyst is also disclosed.