-
公开(公告)号：US20210033010A1
公开(公告)日：2021-02-04
申请号：US16524419
申请日：2019-07-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Nicholas GIRARDI , Sarah Funk , David P. Quigley
Abstract: A diesel exhaust fluid (DEF) control system includes: a target module configured to determine a target rate of injection of a DEF by a DEF injector; an adjustment module configured to determine an adjustment based on a concentration of urea in the DEF; an adjusting module configured to adjust the target rate based on the adjustment to produce an adjusted rate of injection of the DEF by the DEF injector; and an injector control module configured to control injection of the DEF by the DEF injector based on the adjusted rate.
-
22.发明授权公开(公告)号：US10690079B2
公开(公告)日：2020-06-23
申请号：US15838860
申请日：2017-12-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Sarah Funk , David E. Edwards , Min Sun , Gongshin Qi
Abstract: An emissions control system for treating exhaust gas containing NOx emissions from an internal combustion engine comprises a selective catalytic reduction (SCR) device that stores reductant that reacts with the NOx emissions, a reductant supply system configured to inject the reductant according to a reductant storage model; NOx module(s) configured to generate an NOx concentration signal indicating an NOx concentration, temperature module(s) configured to generate a temperature signal indicating an SCR temperature of the SCR device, and a control module operably connected to the reductant supply system, the NOx module, and the temperature module. The control module is configured to determine an amount of the reductant that is parasitically oxidized based on the NOx concentration signal and the temperature signal, and to determine a correction factor based on the amount of parasitically oxidized reductant to modify the reductant storage model.
-
公开(公告)号：US10378463B2
公开(公告)日：2019-08-13
申请号：US15645424
申请日：2017-07-10
Applicant: GM Global Technology Operations LLC
Inventor： David P. Quigley , Sarah Funk
Abstract: Technical solutions are described for an emissions control system for a motor vehicle including an internal combustion engine. The emissions control system includes a selective catalytic reduction (SCR) device, an NOx sensor, and a controller for ammonia slip detection. The ammonia slip detection includes comparing an NOx measurement from the NOx sensor with a predicted NOx value. In response to the NOx measurement exceeding the predicted NOx value by a threshold value, the threshold value being calibrated to a first predetermined value, the threshold value is calibrated to a second predetermined value, a timer is initiated to a predetermined duration, and during the predetermined duration of the timer, in response to a second NOx measurement from the NOx sensor exceeding the predicted NOx value by the threshold value set to the second predetermined value, a reductant dosing rate of the SCR device is adapted according to the second predetermined value.
-
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.
-
25.发明申请公开(公告)号：US20190178187A1
公开(公告)日：2019-06-13
申请号：US15838860
申请日：2017-12-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michael A. Smith , Sarah Funk , David E. Edwards , Min Sun , Gongshin Qi
Abstract: An emissions control system for treating exhaust gas containing NOx emissions from an internal combustion engine comprises a selective catalytic reduction (SCR) device that stores reductant that reacts with the NOx emissions, a reductant supply system configured to inject the reductant according to a reductant storage model; NOx module(s) configured to generate an NOx concentration signal indicating an NOx concentration, temperature module(s) configured to generate a temperature signal indicating an SCR temperature of the SCR device, and a control module operably connected to the reductant supply system, the NOx module, and the temperature module. The control module is configured to determine an amount of the reductant that is parasitically oxidized based on the NOx concentration signal and the temperature signal, and to determine a correction factor based on the amount of parasitically oxidized reductant to modify the reductant storage model.
-
Patent Agency Ranking
公开(公告)号：US10247076B2
公开(公告)日：2019-04-02
申请号：US15481941
申请日：2017-04-07
Applicant: GM Global Technology Operations LLC
Inventor： Michael A. Smith , David P. Quigley , Sarah Funk , Enrik Fetolli
Abstract: A vehicle includes an engine that combusts an air/fuel mixture to produce an exhaust gas stream containing oxides of nitrogen (NOx). A dosing system injects an amount of ammonia (NH3) into the exhaust gas stream based on an initial NH3 injection set point value. A selective catalyst reduction (SCR) device absorbs an amount of the NH3 contained in the exhaust gas stream and reduces an amount of NOx. An electronic hardware controller predicts an NH3 slip condition during which a portion the absorbed NH3 will slip from the SCR device, and modifies the initial NH3 injection set point value based on the predicted NH3 slip condition. The controller further generates a modified NH3 injection set point signal indicating an adjusted amount of the NH3 to inject during the predicted NH3 slip condition. The dosing system adjusts the amount of injected NH3 based on the modified NH3 injection set point signal.
-
27.发明授权公开(公告)号：US10082061B1
公开(公告)日：2018-09-25
申请号：US15451447
申请日：2017-03-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David P. Quigley , David Edwards , Sarah Funk , Anirban Sett
Abstract: Disclosed are SCR predictive control systems, methods for using such control systems, and motor vehicles with SCR employing predictive control. A method for regulating operation of an SCR system includes receiving sensor signals indicative of NOx output downstream from an SCR catalyst, and sensor signals indicative of exhaust gas temperature upstream from the SCR catalyst. The method determines if a model error condition has occurred for the NOx output signal and, responsive to such an occurrence, modulating dosing injector output for at least a calibrated designated time period. Upon expiration of the designated time period, the dosing injector is activated and commanded to inject reductant in accordance with a modulated dosing value. After the dosing injector injects the modulated dosing value of reductant, the method determines if the SCR system is underdosing or overdosing based on a response shape of signals received from the outlet NOx content sensor.
-
公开(公告)号：US08617495B1
公开(公告)日：2013-12-31
申请号：US13671889
申请日：2012-11-08
Applicant: GM Global Technology Operations LLC
Inventor： Sarah Funk , Rebecca J Darr , Paul Jasinkiewicz , Amr Radwan
CPC classification number: B01D53/9477 , B01D53/96 , B01D2255/102 , B01D2255/207 , B01D2255/50 , B01D2257/302 , F02D41/028 , F02D2200/0802 , F02D2200/0818
Abstract: An exhaust gas treatment system for an internal combustion engine to control desulfurization of at least one aftertreatment device is provided. The exhaust gas treatment system includes a desulfurization mode trigger module, a desulfurization control module, and an interrupt module. The desulfurization mode trigger module is configured to set a desulfurization request based on one or more trigger conditions. The desulfurization control module is configured to control desulfurization of at least one aftertreatment device based on the desulfurization request. The interrupt module is configured to interrupt the desulfurization of at least one aftertreatment device based on an interrupt condition.
Abstract translation: 提供了一种用于控制至少一个后处理装置的脱硫的内燃机的废气处理系统。 废气处理系统包括脱硫模式触发模块，脱硫控制模块和中断模块。 脱硫模式触发模块被配置为基于一个或多个触发条件来设置脱硫请求。 脱硫控制模块被配置为基于脱硫请求来控制至少一个后处理装置的脱硫。 中断模块被配置为基于中断条件来中断至少一个后处理装置的脱硫。
-
公开(公告)号：US20240240580A1
公开(公告)日：2024-07-18
申请号：US18156153
申请日：2023-01-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David P. Quigley , Sarah Funk
IPC: F01N3/20
CPC classification number: F01N3/208 , F01N2560/026 , F01N2610/02 , F01N2900/1602
Abstract: Methods and systems for controlling treatment of exhaust in a emission control system of a platform having an combustion system and one or more selective catalyst reduction catalysts (SCR) is provided. In an exemplary embodiment, the system includes: one or more sensors configured to obtain sensor data pertaining to an SCR temperature for the SCR; and a processor that is coupled to the one or more sensors and configured to at least facilitate controlling treatment of the exhaust based on the SCR temperature.
-
公开(公告)号：US12012886B1
公开(公告)日：2024-06-18
申请号：US18156077
申请日：2023-01-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Sarah Funk , David P Quigley
CPC classification number: F01N3/208 , F01N3/035 , F01N11/00 , F01N2550/05 , F01N2560/021 , F01N2560/026
Abstract: Methods and systems for controlling treatment of exhaust in a emission control system of a platform having a combustion system is provided. In an exemplary embodiment, the method includes estimating, via a processor, an amount of soot in exhaust from the combustion system; and controlling, via the processor, treatment of the exhaust based on the amount of soot in the exhaust.
-
-
-
-
-
-
-
-
-
Search Results
35
records
(took 0.026 seconds)
