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公开(公告)号：US20150068196A1
公开(公告)日：2015-03-12
申请号：US14021143
申请日：2013-09-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Janean E. Kowalkowski , Igor Anilovich , Robert J. Sutschek , Jeffrey F. Loo
CPC classification number: F01N3/208 , B01D53/90 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2251/2067 , B01D2257/404 , B01D2258/012 , F01N3/2066 , F01N2550/05 , F01N2610/02 , F01N2610/1406 , F01N2900/1818 , Y02A50/2325 , Y02T10/24
Abstract: A dosing control system for an exhaust system includes: a reductant fluid tank operable to contain a reductant solution comprising urea; an injector disposed in operable communication between a reductant tank and an SCR apparatus, the injector being operable to inject the reductant solution from the reductant tank into a flow of exhaust upstream of the SCR apparatus; a urea quality sensor (UQS) configured and disposed to sense a concentration of the urea in the reductant solution; and, a control module disposed in signal communication with the UQS and in operable communication with the injector, the control module being operable to adjust a dosing of the reductant solution injected by the injector based on a concentration of the urea in the reductant solution.
Abstract translation: 用于排气系统的计量控制系统包括：还原剂流体箱，可操作以容纳包含尿素的还原剂溶液; 所述喷射器设置成在还原剂罐和SCR装置之间可操作地连通，所述喷射器可操作以将还原剂溶液从所述还原剂罐注入到SCR装置上游的排气流中; 尿素质量传感器（UQS），其配置和设置为感测所述还原剂溶液中的尿素浓度; 以及控制模块，其设置为与所述UQS信号通信并且与所述注射器可操作地连通，所述控制模块可操作以基于所述还原剂溶液中所述尿素的浓度来调节由所述注射器注入的还原剂溶液的计量。
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公开(公告)号：US20150033705A1
公开(公告)日：2015-02-05
申请号：US13959250
申请日：2013-08-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Igor Anilovich , Jeffrey F. Loo , Janean E. Kowalkowski , Justin Adam Shetney
IPC: F01N3/20
CPC classification number: F01N3/208 , F01N11/00 , F01N2550/02 , F01N2560/026 , F01N2560/14 , F01N2610/02 , F01N2900/0412 , F01N2900/1621 , Y02A50/2325 , Y02T10/24 , Y02T10/47
Abstract: A dosing control system for an exhaust system of an engine includes: a tank containing a reductant solution having urea; an injector operable to inject the reductant solution into an exhaust flow upstream of an SCR apparatus; first and second NOx sensors disposed to sense NOx emissions in the exhaust flow upstream and downstream, respectively, of the SCR apparatus; and a control module. The control module is disposed in signal communication with the first and second NOx sensors and in operable communication with the injector, the control module being operable to set an original dosing level and decrease a dosing of the reductant solution injected by the injector based on a determination from signals received from the first and second NOx sensors that a reduction in a conversion efficiency of the SCR apparatus below a defined level of conversion efficiency has occurred.
Abstract translation: 用于发动机排气系统的计量控制系统包括：容纳含有尿素的还原剂溶液的罐; 注射器，其可操作以将还原剂溶液注入SCR装置上游的排气流中; 第一和第二NOx传感器设置成分别检测SCR设备的上游和下游的排气流中的NOx排放; 和控制模块。 控制模块被布置成与第一和第二NOx传感器信号通信并且与喷射器可操作地连通，所述控制模块可操作以基于确定来设置原始计量水平并减少由喷射器注入的还原剂溶液的计量 根据从第一和第二NOx传感器接收的信号，SCR设备的转换效率的降低已经发生在规定的转换效率水平之下。
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公开(公告)号：US10100695B2
公开(公告)日：2018-10-16
申请号：US13959250
申请日：2013-08-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Igor Anilovich , Jeffrey F. Loo , Janean E. Kowalkowski , Justin Adam Shetney
Abstract: A dosing control system for an exhaust system of an engine includes: a tank containing a reductant solution having urea; an injector operable to inject the reductant solution into an exhaust flow upstream of an SCR apparatus; first and second NOx sensors disposed to sense NOx emissions in the exhaust flow upstream and downstream, respectively, of the SCR apparatus; and a control module. The control module is disposed in signal communication with the first and second NOx sensors and in operable communication with the injector, the control module being operable to set an original dosing level and decrease a dosing of the reductant solution injected by the injector based on a determination from signals received from the first and second NOx sensors that a reduction in a conversion efficiency of the SCR apparatus below a defined level of conversion efficiency has occurred.
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公开(公告)号：US09003778B2
公开(公告)日：2015-04-14
申请号：US14021143
申请日：2013-09-09
Applicant: GM Global Technology Operations LLC
Inventor： Janean E. Kowalkowski , Igor Anilovich , Robert J. Sutschek , Jeffrey F. Loo
CPC classification number: F01N3/208 , B01D53/90 , B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2251/2067 , B01D2257/404 , B01D2258/012 , F01N3/2066 , F01N2550/05 , F01N2610/02 , F01N2610/1406 , F01N2900/1818 , Y02A50/2325 , Y02T10/24
Abstract: A dosing control system for an exhaust system includes: a reductant fluid tank operable to contain a reductant solution comprising urea; an injector disposed in operable communication between a reductant tank and an SCR apparatus, the injector being operable to inject the reductant solution from the reductant tank into a flow of exhaust upstream of the SCR apparatus; a urea quality sensor (UQS) configured and disposed to sense a concentration of the urea in the reductant solution; and, a control module disposed in signal communication with the UQS and in operable communication with the injector, the control module being operable to adjust a dosing of the reductant solution injected by the injector based on a concentration of the urea in the reductant solution.
Abstract translation: 用于排气系统的计量控制系统包括：还原剂流体箱，其可操作以容纳包含尿素的还原剂溶液; 所述喷射器设置成在还原剂罐和SCR装置之间可操作地连通，所述喷射器可操作以将还原剂溶液从所述还原剂罐注入到SCR装置上游的排气流中; 尿素质量传感器（UQS），其配置和设置为感测所述还原剂溶液中的尿素浓度; 以及控制模块，其设置为与所述UQS信号通信并且与所述注射器可操作地连通，所述控制模块可操作以基于所述还原剂溶液中所述尿素的浓度来调节由所述注射器注入的还原剂溶液的计量。
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