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：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：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：US08356471B2

公开(公告)日：2013-01-22

申请号：US12632628

申请日：2009-12-07

申请人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joe V. Hill

发明人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joe V. Hill

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2258/012 ,  B01D2258/014 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0404 ,  F01N2900/0412 ,  Y02T10/24

摘要： According to one representative embodiment, an apparatus for controlling reductant dosing in an SCR catalyst system having a reductant injection system configured to inject reductant into an exhaust gas stream includes a controller, an actual reductant dosing rate module, and a reductant doser compensation module. The controller is configured to determine a reductant dosing rate command representing a desired reductant dosing rate. The actual reductant dosing rate module is configured to determine a predicted actual reductant dosing rate based at least partially on the reductant dosing rate command. The reductant doser compensation module is configured to determine a modified reductant dosing rate command based at least partially on the predicted actual reductant dosing rate. The reductant injection system injects reductant into the exhaust gas stream at a rate corresponding to the modified reductant dosing rate command.

摘要翻译： 根据一个代表性的实施方案，一种用于控制SCR催化剂体系中还原剂计量的装置，其具有构造成将还原剂注入废气流中的还原剂注入系统，包括控制器，实际还原剂计量速率模块和还原剂加料器补偿模块。 控制器被配置为确定表示期望的还原剂计量速率的还原剂给料速率指令。 实际的还原剂配量速率模块被配置为至少部分地基于还原剂给料速率命令来确定预测的实际还原剂给料速率。 还原剂剂量补偿模块被配置为至少部分地基于所预测的实际还原剂配量速率来确定修改的还原剂配量速率命令。 还原剂注入系统以与修改的还原剂计量速率命令相对应的速率将还原剂注入废气流中。

公开(公告)号：US20100229531A1

公开(公告)日：2010-09-16

申请号：US12632628

申请日：2009-12-07

申请人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joe V. Hill

发明人： John N. Chi ,  Weiwen Wang ,  Phanindra Garimella ,  Joe V. Hill

IPC分类号： F01N3/20 ,  F01N3/18

CPC分类号： F01N3/208 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2258/012 ,  B01D2258/014 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0404 ,  F01N2900/0412 ,  Y02T10/24

摘要： According to one representative embodiment, an apparatus for controlling reductant dosing in an SCR catalyst system having a reductant injection system configured to inject reductant into an exhaust gas stream includes a controller, an actual reductant dosing rate module, and a reductant doser compensation module. The controller is configured to determine a reductant dosing rate command representing a desired reductant dosing rate. The actual reductant dosing rate module is configured to determine a predicted actual reductant dosing rate based at least partially on the reductant dosing rate command. The reductant doser compensation module is configured to determine a modified reductant dosing rate command based at least partially on the predicted actual reductant dosing rate. The reductant injection system injects reductant into the exhaust gas stream at a rate corresponding to the modified reductant dosing rate command.

摘要翻译： 根据一个代表性的实施方案，一种用于控制SCR催化剂体系中还原剂计量的装置，其具有构造成将还原剂注入废气流中的还原剂注入系统，包括控制器，实际还原剂计量速率模块和还原剂加料器补偿模块。 控制器被配置为确定表示期望的还原剂计量速率的还原剂给料速率指令。 实际的还原剂配量速率模块被配置为至少部分地基于还原剂给料速率命令来确定预测的实际还原剂给料速率。 还原剂剂量补偿模块被配置为至少部分地基于所预测的实际还原剂配量速率来确定修改的还原剂配量速率命令。 还原剂注入系统以与修改的还原剂计量速率命令相对应的速率将还原剂注入废气流中。