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1.发明申请公开(公告)号：US20190010851A1
公开(公告)日：2019-01-10
申请号：US15643987
申请日：2017-07-07
Applicant: GM Global Technology Operations LLC
Inventor： Sarah Funk , Charles E. Dean , Po-I Lee , David P. Quigley
Abstract: Technical solutions are described for an emissions control system for a motor vehicle including an internal combustion engine. An example emissions control system for treating exhaust gas in a motor vehicle including an internal combustion engine. For example, the emissions control system includes a selective catalytic reduction (SCR) device, an NOx sensor, and a controller that is configured to detect a NH3 slip of the SCR device. The controller detects the NH3 slip by modulating an engine out NOx from an engine, demodulating the engine out NOx from the engine to original state, and measuring NOx upstream and downstream from the SCR device after the modulation. Further, the controller determines the NH3 slip by comparing gradients in the NOx measurement with one or more predetermined thresholds.
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2.发明申请公开(公告)号：US20180306088A1
公开(公告)日：2018-10-25
申请号：US15491000
申请日：2017-04-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Charles E. Dean , Raffaele Esposito
CPC classification number: F01N11/002 , B01D53/944 , B01D53/9495 , B01D2255/102 , B01D2255/50 , B01D2258/012 , B01J23/40 , B01J29/00 , F01N3/103 , F01N3/2006 , F01N9/005 , F01N11/005 , F01N2370/04 , F01N2510/063 , F01N2560/025 , F01N2560/028 , F01N2560/06 , F01N2560/07 , F01N2900/0422 , F01N2900/08 , F01N2900/1402 , F01N2900/1404 , F01N2900/1602 , F01N2900/1628 , F01N2900/1631
Abstract: Methods for monitoring thermal characteristics of oxidation catalyst (OC) catalytic composition(s) (CC) are provided, and comprise communicating exhaust gas to the OC, and determining a temperature change of the CC for the time frame based on a plurality of heat sources including heat imparted to the CC from exhaust gas enthalpy, heat imparted to the CC via oxidation of HC and/or CO in exhaust gas, heat imparted to the CC via water present in the exhaust gas condensing on the CC or heat removed from the CC via water evaporating from the CC, and optionally heat exchanged between the CC and the ambient environment. Heat imparted to the CC via water condensing on the CC can be determined using an increasing relative humidity proximate the CC, and heat removed from the CC via water evaporating from the CC can be determined using a decreasing relative humidity proximate the CC.
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公开(公告)号：US09714594B1
公开(公告)日：2017-07-25
申请号：US15002813
申请日：2016-01-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Charles E. Dean , Andrea Hidalgo , Michelangelo Ardanese
CPC classification number: F01N3/2033 , B01D53/965 , F01N3/035 , F01N3/103 , F01N9/002 , F01N11/002 , F01N2390/02 , F01N2610/03 , F01N2900/1404 , F01N2900/1411 , F01N2900/1602 , Y02T10/26 , Y02T10/47
Abstract: An exhaust gas assembly includes an exhaust gas tube configured to receive an exhaust gas from the internal combustion engine, which includes at least one cylinder. An oxidation catalytic device may be operatively connected to the exhaust gas tube and includes a catalyst. A first temperature sensor is operatively connected to the oxidation catalytic device. A controller is operatively connected to the first temperature sensor. A hydrocarbon injector is operatively connected to the controller and configured to selectively inject an amount of hydrocarbon at a hydrocarbon injection rate. The controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the hydrocarbon injection rate. The controller may be programmed to limit the hydrocarbon injection rate based at least partially on a combination of space velocity, temperature of the catalyst in the oxidation catalytic device and temperature of a particulate filter.
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公开(公告)号：US20170152786A1
公开(公告)日：2017-06-01
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
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.
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公开(公告)号：US20190178131A1
公开(公告)日：2019-06-13
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.
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Patent Agency Ranking
公开(公告)号：US20180038298A1
公开(公告)日：2018-02-08
申请号：US15225972
申请日：2016-08-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Charles E. Dean , Michael A. Smith , Michelangelo Ardanese , Jon C. Miller
CPC classification number: F02D41/029 , F01N3/021 , F01N3/027 , F01N3/035 , F01N3/208 , F01N9/002 , F01N11/002 , F01N11/007 , F01N2550/04 , F01N2900/0418 , F01N2900/10 , F01N2900/14 , F02D41/04 , F02D41/405 , Y02A50/2325 , Y02T10/24 , Y02T10/47
Abstract: A method for controlling an exhaust gas treatment system is provided. The exhaust gas treatment system includes an exhaust gas stream supplied by an exhaust gas source to a selective catalytic reduction device and a particulate filter device. Additionally or alternatively, the exhaust gas treatment system includes an exhaust gas stream supplied by an exhaust gas source to a selective catalytic reduction filter device. The method comprises initiating a selective catalytic reduction device service in response to a reductant dosing adaptation. The method can further include satisfying a secondary condition prior to initiating a selective catalytic reduction device service. The device service can include increasing the exhaust gas temperature or initiating an active regeneration of the particulate filter device.
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公开(公告)号：US20170211445A1
公开(公告)日：2017-07-27
申请号：US15002813
申请日：2016-01-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Charles E. Dean , Andrea Hidalgo , Michelangelo Ardanese
CPC classification number: F01N3/2033 , B01D53/965 , F01N3/035 , F01N3/103 , F01N9/002 , F01N11/002 , F01N2390/02 , F01N2610/03 , F01N2900/1404 , F01N2900/1411 , F01N2900/1602 , Y02T10/26 , Y02T10/47
Abstract: An exhaust gas assembly includes an exhaust gas tube configured to receive an exhaust gas from the internal combustion engine, which includes at least one cylinder. An oxidation catalytic device may be operatively connected to the exhaust gas tube and includes a catalyst. A first temperature sensor is operatively connected to the oxidation catalytic device. A controller is operatively connected to the first temperature sensor. A hydrocarbon injector is operatively connected to the controller and configured to selectively inject an amount of hydrocarbon at a hydrocarbon injection rate. The controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the hydrocarbon injection rate. The controller may be programmed to limit the hydrocarbon injection rate based at least partially on a combination of space velocity, temperature of the catalyst in the oxidation catalytic device and temperature of a particulate filter.
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8.发明授权公开(公告)号：US10323561B2
公开(公告)日：2019-06-18
申请号：US15491000
申请日：2017-04-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Charles E. Dean , Raffaele Esposito
Abstract: Methods for monitoring thermal characteristics of oxidation catalyst (OC) catalytic composition(s) (CC) are provided, and comprise communicating exhaust gas to the OC, and determining a temperature change of the CC for the time frame based on a plurality of heat sources including heat imparted to the CC from exhaust gas enthalpy, heat imparted to the CC via oxidation of HC and/or CO in exhaust gas, heat imparted to the CC via water present in the exhaust gas condensing on the CC or heat removed from the CC via water evaporating from the CC, and optionally heat exchanged between the CC and the ambient environment. Heat imparted to the CC via water condensing on the CC can be determined using an increasing relative humidity proximate the CC, and heat removed from the CC via water evaporating from the CC can be determined using a decreasing relative humidity proximate the CC.
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公开(公告)号：US09909482B2
公开(公告)日：2018-03-06
申请号：US15212307
申请日：2016-07-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michelangelo Ardanese , David Edwards , Charles E. Dean
CPC classification number: F01N11/002 , F01N3/021 , F01N3/023 , F01N3/103 , F01N3/2066 , F01N9/002 , F01N2430/085 , F01N2560/06 , F01N2560/14 , F01N2900/0408 , F01N2900/1404 , F01N2900/1411 , F01N2900/1621 , F01N2900/1631
Abstract: A system and method for evaluating the efficiency of an oxidation catalyst of a vehicle exhaust system includes a diagnostic control system including a controller operatively connected to the exhaust system and at least one temperature sensor disposed proximate the oxidation catalyst to measure the temperature of the exhaust gas. The controller determines an operating state of at least one of the engine and exhaust system and initiates a particulate filter regeneration process in response to the detected operating state. The controller defines a first diagnostic index value and calculates a second diagnostic index value based upon the first diagnostic index value and an offset value. An oxidation catalyst efficiency validation module determines the efficiency of the oxidation catalyst.
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公开(公告)号：US20180016962A1
公开(公告)日：2018-01-18
申请号：US15212307
申请日：2016-07-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michelangelo Ardanese , David Edwards , Charles E. Dean
CPC classification number: F01N11/002 , F01N3/021 , F01N3/023 , F01N3/103 , F01N3/2066 , F01N9/002 , F01N2430/085 , F01N2560/06 , F01N2560/14 , F01N2900/0408 , F01N2900/1404 , F01N2900/1411 , F01N2900/1621 , F01N2900/1631
Abstract: A system and method for evaluating the efficiency of an oxidation catalyst of a vehicle exhaust system includes a diagnostic control system including a controller operatively connected to the exhaust system and at least one temperature sensor disposed proximate the oxidation catalyst to measure the temperature of the exhaust gas. The controller determines an operating state of at least one of the engine and exhaust system and initiates a particulate filter regeneration process in response to the detected operating state. The controller defines a first diagnostic index value and calculates a second diagnostic index value based upon the first diagnostic index value and an offset value. An oxidation catalyst efficiency validation module determines the efficiency of the oxidation catalyst.
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