公开(公告)号：US08256208B2

公开(公告)日：2012-09-04

申请号：US12433586

申请日：2009-04-30

申请人： Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Timothy R. Frazier ,  Abdul R. Ofoli ,  Joe V. Hill ,  Lisa A. Farrell ,  Neal W. Currier ,  Aleksey Yezerets ,  Andy Osburn

发明人： Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Timothy R. Frazier ,  Abdul R. Ofoli ,  Joe V. Hill ,  Lisa A. Farrell ,  Neal W. Currier ,  Aleksey Yezerets ,  Andy Osburn

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  B01D53/86 ,  B01D2251/2067 ,  B01D2255/91 ,  B01D2258/012 ,  B01D2258/014 ,  B01D2259/4566 ,  F01N3/106 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  Y02T10/24 ,  Y02T10/47

摘要： According to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust gas stream of an engine system having a selective catalytic reduction (SCR) system with an SCR catalyst positioned downstream of a reductant injector includes a NOx reduction target module and a reductant module. The NOx reduction target module is configured to determine a NOx reduction requirement, which includes an amount of NOx in the exhaust gas stream to be reduced on the SCR catalyst. The reductant module is configured to determine the amount of reductant added to the exhaust gas stream to achieve the NOx reduction requirement. The amount of reductant added to the exhaust gas stream is a function of at least one ammonia storage characteristic of the SCR catalyst, at least one reductant-to-ammonia conversion characteristic, and a conversion capability of an AMOX catalyst in exhaust receiving communication with the SCR catalyst.

摘要翻译： 根据一个代表性实施例，一种用于减少具有位于还原剂喷射器下游的具有选择性催化还原（SCR）系统的发动机系统的发动机排气流中的NOx排放的装置包括NOx还原目标模块和还原剂 模块。 NOx还原目标模块被配置为确定NOx还原要求，其包括在SCR催化剂上减少的排气流中的NOx的量。 还原剂模块被配置为确定添加到排气流中的还原剂的量以实现NOx还原要求。 添加到废气流中的还原剂的量是SCR催化剂的至少一种氨储存特性，至少一种还原剂与氨的转化特性和在与废气中的AMOX催化剂的转化能力接触的功能 SCR催化剂。

公开(公告)号：US20100024390A1

公开(公告)日：2010-02-04

申请号：US12433586

申请日：2009-04-30

申请人： Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Timothy R. Frazier ,  Abdul R. Ofoli ,  Joe V. Hill ,  Lisa A. Farrell ,  Neal W. Currier ,  Aleksey Yezerets ,  Andy Osburn

发明人： Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Timothy R. Frazier ,  Abdul R. Ofoli ,  Joe V. Hill ,  Lisa A. Farrell ,  Neal W. Currier ,  Aleksey Yezerets ,  Andy Osburn

IPC分类号： F01N3/20 ,  F01N3/10

CPC分类号： F01N3/208 ,  B01D53/86 ,  B01D2251/2067 ,  B01D2255/91 ,  B01D2258/012 ,  B01D2258/014 ,  B01D2259/4566 ,  F01N3/106 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  Y02T10/24 ,  Y02T10/47

摘要： According to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust gas stream of an engine system having a selective catalytic reduction (SCR) system with an SCR catalyst positioned downstream of a reductant injector includes a NOx reduction target module and a reductant module. The NOx reduction target module is configured to determine a NOx reduction requirement, which includes an amount of NOx in the exhaust gas stream to be reduced on the SCR catalyst. The reductant module is configured to determine the amount of reductant added to the exhaust gas stream to achieve the NOx reduction requirement. The amount of reductant added to the exhaust gas stream is a function of at least one ammonia storage characteristic of the SCR catalyst, at least one reductant-to-ammonia conversion characteristic, and a conversion capability of an AMOX catalyst in exhaust receiving communication with the SCR catalyst.

摘要翻译： 根据一个代表性实施例，一种用于减少具有位于还原剂喷射器下游的具有选择性催化还原（SCR）系统的发动机系统的发动机排气流中的NOx排放的装置包括NOx还原目标模块和还原剂 模块。 NOx还原目标模块被配置为确定NOx还原要求，其包括在SCR催化剂上减少的排气流中的NOx的量。 还原剂模块被配置为确定添加到排气流中的还原剂的量以实现NOx还原要求。 添加到废气流中的还原剂的量是SCR催化剂的至少一种氨储存特性，至少一种还原剂与氨的转化特性和在与废气中的AMOX催化剂的转化能力接触的功能 SCR催化剂。

公开(公告)号：US08161730B2

公开(公告)日：2012-04-24

申请号：US12112795

申请日：2008-04-30

申请人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joan M. Wills ,  Joe V. Hill ,  Lisa A. Farrell ,  Abdul R. Ofoli

发明人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joan M. Wills ,  Joe V. Hill ,  Lisa A. Farrell ,  Abdul R. Ofoli

IPC分类号： F01N3/00

CPC分类号： F01N3/035 ,  B01D53/9409 ,  B01D2251/2062 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0828 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1616 ,  F01N2900/1622 ,  F02B37/164 ,  F02B37/18 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/47

摘要： Various embodiments of an apparatus, system, and method are disclosed for reducing NOx emissions on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust includes a NOx reduction target module that is configured to determine a NOx reduction requirement that includes an amount of NOx in the exhaust gas stream to be reduced on a selective catalytic reduction (SCR) catalyst. The apparatus also includes an ammonia target module that is configured to determine an ammonia addition requirement that includes an amount of ammonia added to the exhaust gas stream to achieve the NOx reduction requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement. The apparatus further includes a reductant limiting module that is configured to determine whether at least one reductant limiting condition is met and to limit the amount of reductant added in response to the at least one reductant limiting condition if the at least one reductant limiting condition has been met.

摘要翻译： 公开了用于减少SCR催化剂上的NOx排放的设备，系统和方法的各种实施例。 例如，根据一个代表性的实施例，用于减少发动机排气中的NOx排放的装置包括NOx还原目标模块，其被配置为确定NOx还原要求，所述NOx还原要求包括在所述排气流中减少的NOx的量 选择性催化还原（SCR）催化剂。 该装置还包括氨目标模块，其被配置为确定包括添加到废气流中的氨的量以实现NOx降低要求的氨添加要求。 该装置还包括还原剂目标模块，其被配置为确定还原剂注入要求，其包括添加到废气流中的还原剂的量以实现氨添加要求。 该装置还包括还原剂限制模块，其被配置为确定是否满足至少一个还原剂限制条件，并且如果至少一种还原剂限制条件已经被限制，则限制响应于至少一种还原剂限制条件而添加的还原剂的量 见面

公开(公告)号：US20090272105A1

公开(公告)日：2009-11-05

申请号：US12112795

申请日：2008-04-30

申请人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joan M. Wills ,  Joe V. Hill ,  Lisa A. Farrell ,  Abdul R. Ofoli

发明人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joan M. Wills ,  Joe V. Hill ,  Lisa A. Farrell ,  Abdul R. Ofoli

IPC分类号： F01N11/00 ,  F01N3/18

CPC分类号： F01N3/035 ,  B01D53/9409 ,  B01D2251/2062 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0828 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1616 ,  F01N2900/1622 ,  F02B37/164 ,  F02B37/18 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/47

摘要： Various embodiments of an apparatus, system, and method are disclosed for reducing NOx emissions on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust includes a NOx reduction target module that is configured to determine a NOx reduction requirement that includes an amount of NOx in the exhaust gas stream to be reduced on a selective catalytic reduction (SCR) catalyst. The apparatus also includes an ammonia target module that is configured to determine an ammonia addition requirement that includes an amount of ammonia added to the exhaust gas stream to achieve the NOx reduction requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement. The apparatus further includes a reductant limiting module that is configured to determine whether at least one reductant limiting condition is met and to limit the amount of reductant added in response to the at least one reductant limiting condition if the at least one reductant limiting condition has been met.

摘要翻译： 公开了用于减少SCR催化剂上的NOx排放的设备，系统和方法的各种实施例。 例如，根据一个代表性的实施例，用于减少发动机排气中的NOx排放的装置包括NOx还原目标模块，其被配置为确定NOx还原要求，所述NOx还原要求包括在所述排气流中减少的NOx的量 选择性催化还原（SCR）催化剂。 该装置还包括氨目标模块，其被配置为确定包括添加到废气流中的氨的量以实现NOx降低要求的氨添加要求。 该装置还包括还原剂目标模块，其被配置为确定还原剂注入要求，其包括添加到废气流中的还原剂的量以实现氨添加要求。 该装置还包括还原剂限制模块，其被配置为确定是否满足至少一种还原剂限制条件，并且如果至少一种还原剂限制条件已经被限制，则限制响应于至少一种还原剂限制条件而添加的还原剂的量 见面

公开(公告)号：US20090272104A1

公开(公告)日：2009-11-05

申请号：US12112678

申请日：2008-04-30

申请人： Phanindra Garimella ,  Abdul R. Ofoli ,  Timothy R. Frazier ,  Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Andrew Osburn

发明人： Phanindra Garimella ,  Abdul R. Ofoli ,  Timothy R. Frazier ,  Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Andrew Osburn

IPC分类号： F01N9/00

CPC分类号： F01N3/208 ,  B01D53/9409 ,  B01D2251/2062 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/14 ,  F01N2900/0408 ,  F01N2900/0411 ,  F01N2900/0412 ,  F01N2900/1622 ,  F02B37/00 ,  Y02A50/2344 ,  Y02T10/24

摘要： Various embodiments of an apparatus, system, and method are disclosed for reducing NOx emissions using ammonia storage on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust includes a NOx reduction target module that is configured to determine a NOx reduction requirement. The apparatus also includes an ammonia storage module that is configured to determine an ammonia storage modifier. An ammonia target module of the apparatus is configured to determine an ammonia addition requirement. The ammonia target module is communicable in data receiving communication with the ammonia storage module to receive the ammonia storage modifier, which is added to the ammonia addition requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement.

摘要翻译： 公开了用于使用SCR催化剂上的氨储存来减少NOx排放的装置，系统和方法的各种实施例。 例如，根据一个代表性的实施例，用于减少发动机排气中的NOx排放的装置包括被配置为确定NOx降低要求的NOx还原目标模块。 该装置还包括氨储存模块，其被配置成确定氨贮存改性剂。 该装置的氨目标模块被配置成确定氨添加要求。 氨目标模块可在与氨储存模块进行数据接收通信中进行通信，以接收氨添加要求的氨存储改性剂。 该装置还包括还原剂目标模块，其被配置为确定还原剂注入要求，其包括添加到废气流中的还原剂的量以实现氨添加要求。

公开(公告)号：US08181450B2

公开(公告)日：2012-05-22

申请号：US12112678

申请日：2008-04-30

申请人： Phanindra Garimella ,  Abdul R. Ofoli ,  Timothy R. Frazier ,  Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Andrew Osburn

发明人： Phanindra Garimella ,  Abdul R. Ofoli ,  Timothy R. Frazier ,  Joan M. Wills ,  John N. Chi ,  Weiwen Wang ,  Andrew Osburn

IPC分类号： F01N3/20

CPC分类号： F01N3/208 ,  B01D53/9409 ,  B01D2251/2062 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/14 ,  F01N2900/0408 ,  F01N2900/0411 ,  F01N2900/0412 ,  F01N2900/1622 ,  F02B37/00 ,  Y02A50/2344 ,  Y02T10/24

摘要： Various embodiments of an apparatus, system, and method are disclosed for reducing NOx emissions using ammonia storage on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust includes a NOx reduction target module that is configured to determine a NOx reduction requirement. The apparatus also includes an ammonia storage module that is configured to determine an ammonia storage modifier. An ammonia target module of the apparatus is configured to determine an ammonia addition requirement. The ammonia target module is communicable in data receiving communication with the ammonia storage module to receive the ammonia storage modifier, which is added to the ammonia addition requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement.

摘要翻译： 公开了用于使用SCR催化剂上的氨储存来减少NOx排放的装置，系统和方法的各种实施例。 例如，根据一个代表性的实施例，用于减少发动机排气中的NOx排放的装置包括被配置为确定NOx降低要求的NOx还原目标模块。 该装置还包括氨储存模块，其被配置成确定氨贮存改性剂。 该装置的氨目标模块被配置成确定氨添加要求。 氨目标模块可在与氨储存模块进行数据接收通信中进行通信，以接收氨添加要求的氨存储改性剂。 该装置还包括还原剂目标模块，其被配置为确定还原剂注入要求，其包括添加到废气流中的还原剂的量以实现氨添加要求。

公开(公告)号：US08141340B2

公开(公告)日：2012-03-27

申请号：US12433600

申请日：2009-04-30

申请人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

发明人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24

摘要： According to one representative embodiment, an apparatus for determining the degradation of a selective catalytic reduction (SCR) catalyst of an engine exhaust aftertreatment system includes a system properties module configured to store at least one system dynamics property value of the exhaust system at a first time and receive the at least one system dynamics property value of the exhaust aftertreatment system at a second time subsequent to the first time. The apparatus also includes a system dynamics module configured to determine a storage capacity of the SCR catalyst based on a comparison between the at least one system dynamic property value at the first time and the at least one system dynamic property value at the second time. Additionally, the apparatus includes an SCR catalyst degradation factor module configured to determine an SCR catalyst degradation factor based at least partially on the storage capacity of the SCR catalyst.

摘要翻译： 根据一个代表性实施例，用于确定发动机排气后处理系统的选择性催化还原（SCR）催化剂的劣化的装置包括系统特性模块，其被配置为在第一时间存储排气系统的至少一个系统动力特性值 并且在第一次之后的第二时间接收排气后处理系统的至少一个系统动力特性值。 该装置还包括系统动力学模块，其被配置为基于第一时间的至少一个系统动态属性值与第二时间的至少一个系统动态属性值之间的比较来确定SCR催化剂的存储容量。 另外，该装置包括SCR催化剂劣化因子模块，其被配置为至少部分地基于SCR催化剂的储存容量来确定SCR催化剂降解因子。

公开(公告)号：US20090272099A1

公开(公告)日：2009-11-05

申请号：US12433600

申请日：2009-04-30

申请人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

发明人： Phanindra Garimella ,  Joan M. Wills ,  John N. Chi ,  Neal W. Currier ,  Aleksey Yezerets

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N9/00

CPC分类号： F01N3/208 ,  F01N2550/02 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24

摘要： According to one representative embodiment, an apparatus for determining the degradation of a selective catalytic reduction (SCR) catalyst of an engine exhaust aftertreatment system includes a system properties module configured to store at least one system dynamics property value of the exhaust system at a first time and receive the at least one system dynamics property value of the exhaust aftertreatment system at a second time subsequent to the first time. The apparatus also includes a system dynamics module configured to determine a storage capacity of the SCR catalyst based on a comparison between the at least one system dynamic property value at the first time and the at least one system dynamic property value at the second time. Additionally, the apparatus includes an SCR catalyst degradation factor module configured to determine an SCR catalyst degradation factor based at least partially on the storage capacity of the SCR catalyst.

摘要翻译： 根据一个代表性实施例，用于确定发动机排气后处理系统的选择性催化还原（SCR）催化剂的劣化的装置包括系统特性模块，其被配置为在第一时间存储排气系统的至少一个系统动力特性值 并且在第一次之后的第二时间接收排气后处理系统的至少一个系统动力特性值。 该装置还包括系统动力学模块，其被配置为基于第一时间的至少一个系统动态属性值与第二时间的至少一个系统动态属性值之间的比较来确定SCR催化剂的存储容量。 另外，该装置包括SCR催化剂劣化因子模块，其被配置为至少部分地基于SCR催化剂的储存容量来确定SCR催化剂降解因子。

公开(公告)号：US08590290B2

公开(公告)日：2013-11-26

申请号：US12551747

申请日：2009-09-01

申请人： Aleksey Yezerets ,  Neal W. Currier ,  Zheng Liu ,  Joan M. Wills ,  Abdul R. Ofoli ,  Michael R. Haas ,  Andrew W. Osburn

发明人： Aleksey Yezerets ,  Neal W. Currier ,  Zheng Liu ,  Joan M. Wills ,  Abdul R. Ofoli ,  Michael R. Haas ,  Andrew W. Osburn

IPC分类号： F01N3/00

CPC分类号： F01N3/2066 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/05 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： One embodiment is a method including operating an SCR system at a plurality of commanded ammonia to NOx input ratios, providing a plurality of data indicating NOx output from the SCR system for the plurality of commanded ammonia to NOx input ratios, and evaluating the plurality of data to diagnose the SCR system. Additional embodiment are methods, systems, and apparatuses including SCR diagnostics. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.

摘要翻译： 一个实施例是一种方法，包括以多个指令氨操作SCR系统至NOx输入比，提供指示SCR系统的NOx输出的多个数据用于多个指令氨至NOx输入比，并且评估多个数据 诊断SCR系统。 附加实施例是包括SCR诊断的方法，系统和装置。 从以下说明和附图，其他实施例，形式，目的，特征，优点，方面和优点将变得显而易见。

公开(公告)号：US08281572B2

公开(公告)日：2012-10-09

申请号：US12433767

申请日：2009-04-30

申请人： John N. Chi ,  Joe V. Hill ,  Joan M. Wills ,  Lisa A. Farrell ,  Timothy R. Frazier ,  Hasan Mohammed

发明人： John N. Chi ,  Joe V. Hill ,  Joan M. Wills ,  Lisa A. Farrell ,  Timothy R. Frazier ,  Hasan Mohammed

IPC分类号： F01N3/00

CPC分类号： F01N11/00 ,  B01D53/86 ,  B01D2251/2067 ,  B01D2255/91 ,  B01D2258/012 ,  B01D2258/014 ,  B01D2259/455 ,  F01N3/106 ,  F01N3/208 ,  F01N9/005 ,  F01N2550/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2610/02 ,  F01N2900/1622 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： Various embodiments of an apparatus, system, and method are disclosed for controlling NOx conversion in a selective catalytic reduction (SCR) system. According to one representative embodiment, an apparatus includes a duty cycle factor module and a NOx conversion mode selection module. The duty cycle factor module is configured to determine a duty cycle factor of an internal combustion engine where the duty cycle factor represents predicted driving conditions of a vehicle in which the internal combustion engine is housed. The NOx conversion mode selection module is configured to command NOx conversion in the SCR system according to a first NOx conversion mode if the duty cycle factor is within a duty cycle factor range and according to a second NOx conversion mode if the duty cycle factor is not within the duty cycle factor range.

摘要翻译： 公开了用于控制选择性催化还原（SCR）系统中的NOx转化的装置，系统和方法的各种实施例。 根据一个代表性实施例，一种装置包括占空比因子模块和NOx转换模式选择模块。 占空比因子模块被配置为确定内燃机的占空比因子，其中占空比因子表示内燃机容纳的车辆的预测驾驶条件。 NOx转换模式选择模块被配置为如果占空比因子在占空比因子范围内并根据第二NOx转换模式，如果占空因数不是，则根据第一NOx转换模式来命令SCR系统中的NOx转换 在占空比范围内。