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公开(公告)号：US09163543B2
公开(公告)日：2015-10-20
申请号：US13481225
申请日：2012-05-25
CPC分类号： F01N3/208 , F01N3/225 , F02D41/0002 , F02D41/0275 , F02D41/1441 , F02D41/1454 , F02D41/1475 , F02D2200/0802 , F02D2200/0806 , Y02T10/22 , Y02T10/24 , Y02T10/42
摘要： Embodiments for controlling exhaust oxygen concentration are provided. In one example, an engine method comprises operating the engine with lean combustion, and when exhaust oxygen concentration is below a threshold, injecting air into an exhaust passage between a first emission control device and an SCR device. In this way, excess emissions may be converted while operating with lean combustion.
摘要翻译： 提供了用于控制排气氧浓度的实施例。 在一个示例中，发动机方法包括以稀薄燃烧操作发动机，并且当排气氧浓度低于阈值时，将空气喷射到第一排放控制装置和SCR装置之间的排气通道中。 以这种方式，可以在使用稀薄燃烧的同时转换过量排放。
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公开(公告)号：US20130312391A1
公开(公告)日：2013-11-28
申请号：US13481225
申请日：2012-05-25
CPC分类号： F01N3/208 , F01N3/225 , F02D41/0002 , F02D41/0275 , F02D41/1441 , F02D41/1454 , F02D41/1475 , F02D2200/0802 , F02D2200/0806 , Y02T10/22 , Y02T10/24 , Y02T10/42
摘要： Embodiments for controlling exhaust oxygen concentration are provided. In one example, an engine method comprises operating the engine with lean combustion, and when exhaust oxygen concentration is below a threshold, injecting air into an exhaust passage between a first emission control device and an SCR device. In this way, excess emissions may be converted while operating with lean combustion.
摘要翻译： 提供了用于控制排气氧浓度的实施例。 在一个示例中，发动机方法包括以稀薄燃烧操作发动机，并且当排气氧浓度低于阈值时，将空气喷射到第一排放控制装置和SCR装置之间的排气通道中。 以这种方式，可以在使用稀薄燃烧的同时转换过量排放。
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公开(公告)号：US20120275978A1
公开(公告)日：2012-11-01
申请号：US13548090
申请日：2012-07-12
CPC分类号： B01D53/9409 , B01D53/9477 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2255/20738 , B01D2255/20746 , B01D2255/50 , B01D2255/9022 , B01D2258/012 , B01D2258/014 , F01N3/035 , F01N3/2066 , F01N3/208 , F01N13/0093 , F01N13/0097 , F01N2370/04 , F01N2560/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A system and method for NOx reduction is described, with a catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx conversion performance, lower than said first NOx conversion performance, in a second temperature range. The catalytic unit also comprises a second zeolite catalyst with a third NOx conversion performance, lower than said first NOx conversion performance, in the first temperature range and a fourth NOx conversion performance, higher than said second and third NOx conversion performances in the second temperature range, said first temperature range being higher than said second temperature range. The system further includes a controller configured to adjust an amount of reducing agent added to the NOx reducing system responsive to a temperature of the catalytic unit.
摘要翻译： 描述了一种用于NOx还原的系统和方法，催化单元包括在第一温度范围内具有第一NOx转化性能的第一沸石催化剂和低于所述第一NOx转化性能的第二NOx转化性能，在第二温度范围 。 催化单元还包括在第一温度范围内具有低于所述第一NOx转化性能的第三NOx转化性能的第二沸石催化剂和高于第二温度范围内的所述第二和第三NOx转化性能的第四NOx转化性能 所述第一温度范围高于所述第二温度范围。 该系统还包括控制器，该控制器被配置为响应催化单元的温度来调节添加到NOx还原系统中的还原剂的量。
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公开(公告)号：US08225597B2
公开(公告)日：2012-07-24
申请号：US12242450
申请日：2008-09-30
IPC分类号： F01N3/00
CPC分类号： B01D53/9409 , B01D53/9477 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2255/20738 , B01D2255/20746 , B01D2255/50 , B01D2255/9022 , B01D2258/012 , B01D2258/014 , F01N3/035 , F01N3/2066 , F01N3/208 , F01N13/0093 , F01N13/0097 , F01N2370/04 , F01N2560/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A system and method for NOx reduction is described, with a catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx conversion performance, lower than said first NOx conversion performance, in a second temperature range. The catalytic unit also comprises a second zeolite catalyst with a third NOx conversion performance, lower than said first NOx conversion performance, in the first temperature range and a fourth NOx conversion performance, higher than said second and third NOx conversion performances in the second temperature range, said first temperature range being higher than said second temperature range. The system further includes a controller configured to adjust an amount of reducing agent added to the NOx reducing system responsive to a temperature of the catalytic unit.
摘要翻译： 描述了一种用于NOx还原的系统和方法，催化单元包括在第一温度范围内具有第一NOx转化性能的第一沸石催化剂和低于所述第一NOx转化性能的第二NOx转化性能，在第二温度范围 。 催化单元还包括在第一温度范围内具有低于所述第一NOx转化性能的第三NOx转化性能的第二沸石催化剂和高于第二温度范围内的所述第二和第三NOx转化性能的第四NOx转化性能 所述第一温度范围高于所述第二温度范围。 该系统还包括控制器，该控制器被配置为响应催化单元的温度来调节添加到NOx还原系统中的还原剂的量。
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5.发明授权Emission control system having a coated mixer for an internal combustion engine and method of use 有权具有用于内燃机的涂覆混合器的排放控制系统及其使用方法公开(公告)号：US07963104B2
公开(公告)日：2011-06-21
申请号：US12032212
申请日：2008-02-15
申请人： James W. Girard , Rachel Alison Snow , Emil G. Serban , Giovanni Cavataio , Christine Kay Lambert
发明人： James W. Girard , Rachel Alison Snow , Emil G. Serban , Giovanni Cavataio , Christine Kay Lambert
IPC分类号： F01N3/00
CPC分类号： F01N3/2892 , B01D53/90 , B01D53/9418 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D2251/2067 , B01D2255/102 , B01D2255/104 , B01D2255/202 , B01D2255/204 , B01D2255/206 , B01D2255/20738 , B01D2255/20761 , B01D2255/407 , B01D2255/90 , B01F3/04049 , B01F5/0268 , B01F5/0618 , F01N3/2073 , F01N2240/20 , F01N2240/40 , F01N2610/14 , Y02A50/2325 , Y02C20/10 , Y02T10/24
摘要： An emission control system capable of remediating an exhaust from an internal combustion engine and having an exhaust passage, an oxidation catalyst, a reducing agent and a source of the reducing agent cooperating with an aperture in the exhaust passage. The aperture is disposed downstream of the oxidation catalyst. The system also includes a mixer arranged within the exhaust passage downstream of the aperture. The mixer includes a plurality of mixing elements. The mixer also includes a coating capable of hydrolyzing the reducing agent. At least a portion of the mixing elements which have a thermal conductivity greater than 8 W/m/° K. The system includes a selective catalytic reduction (SCR) catalyst disposed downstream from the mixer.
摘要翻译： 一种能够修复来自内燃机的排气并具有排气通道，氧化催化剂，还原剂和与排气通道中的孔配合的还原剂源的排放控制系统。 孔设置在氧化催化剂的下游。 该系统还包括布置在孔的下游的排气通道内的混合器。 混合器包括多个混合元件。 混合器还包括能够水解还原剂的涂层。 混合元件的至少一部分具有大于8W / m /°K的导热系数。该系统包括设置在混合器下游的选择性催化还原（SCR）催化剂。
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6.发明申请EMISSION CONTROL SYSTEM HAVING A COATED MIXER FOR AN INTERNAL COMBUSTION ENGINE AND METHOD OF USE 有权具有用于内燃机的涂覆混合器的排放控制系统及其使用方法公开(公告)号：US20090205324A1
公开(公告)日：2009-08-20
申请号：US12032212
申请日：2008-02-15
申请人： James W. Girard , Rachel Alison Snow , Emil G. Serban , Giovanni Cavataio , Christine Kay Lambert
发明人： James W. Girard , Rachel Alison Snow , Emil G. Serban , Giovanni Cavataio , Christine Kay Lambert
CPC分类号： F01N3/2892 , B01D53/90 , B01D53/9418 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01D2251/2067 , B01D2255/102 , B01D2255/104 , B01D2255/202 , B01D2255/204 , B01D2255/206 , B01D2255/20738 , B01D2255/20761 , B01D2255/407 , B01D2255/90 , B01F3/04049 , B01F5/0268 , B01F5/0618 , F01N3/2073 , F01N2240/20 , F01N2240/40 , F01N2610/14 , Y02A50/2325 , Y02C20/10 , Y02T10/24
摘要： An emission control system capable of remediating an exhaust from an internal combustion engine and having an exhaust passage, an oxidation catalyst, a reducing agent and a source of the reducing agent cooperating with an aperture in the exhaust passage. The aperture is disposed downstream of the oxidation catalyst. The system also includes a mixer arranged within the exhaust passage downstream of the aperture. The mixer includes a plurality of mixing elements. The mixer also includes a coating capable of hydrolyzing the reducing agent. At least a portion of the mixing elements which have a thermal conductivity greater than 8 W/m/° K. The system includes a selective catalytic reduction (SCR) catalyst disposed downstream from the mixer.
摘要翻译： 一种能够修复来自内燃机的排气并具有排气通道，氧化催化剂，还原剂和与排气通道中的孔配合的还原剂源的排放控制系统。 孔设置在氧化催化剂的下游。 该系统还包括布置在孔的下游的排气通道内的混合器。 混合器包括多个混合元件。 混合器还包括能够水解还原剂的涂层。 混合元件的至少一部分具有大于8W / m /°K的导热系数。该系统包括设置在混合器下游的选择性催化还原（SCR）催化剂。
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公开(公告)号：US09061244B2
公开(公告)日：2015-06-23
申请号：US13548090
申请日：2012-07-12
CPC分类号： B01D53/9409 , B01D53/9477 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2255/20738 , B01D2255/20746 , B01D2255/50 , B01D2255/9022 , B01D2258/012 , B01D2258/014 , F01N3/035 , F01N3/2066 , F01N3/208 , F01N13/0093 , F01N13/0097 , F01N2370/04 , F01N2560/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A system and method for NOx reduction is described, with a catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx conversion performance, lower than said first NOx conversion performance, in a second temperature range. The catalytic unit also comprises a second zeolite catalyst with a third NOx conversion performance, lower than said first NOx conversion performance, in the first temperature range and a fourth NOx conversion performance, higher than said second and third NOx conversion performances in the second temperature range, said first temperature range being higher than said second temperature range. The system further includes a controller configured to adjust an amount of reducing agent added to the NOx reducing system responsive to a temperature of the catalytic unit.
摘要翻译： 描述了一种用于NOx还原的系统和方法，催化单元包括在第一温度范围内具有第一NOx转化性能的第一沸石催化剂和低于所述第一NOx转化性能的第二NOx转化性能，在第二温度范围 。 催化单元还包括在第一温度范围内具有低于所述第一NOx转化性能的第三NOx转化性能的第二沸石催化剂和高于第二温度范围内的所述第二和第三NOx转化性能的第四NOx转化性能 所述第一温度范围高于所述第二温度范围。 该系统还包括控制器，该控制器被配置为响应催化单元的温度来调节添加到NOx还原系统中的还原剂的量。
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公开(公告)号：US08343448B2
公开(公告)日：2013-01-01
申请号：US12242437
申请日：2008-09-30
IPC分类号： B01D53/56
CPC分类号： F01N3/2066 , B01D53/9418 , B01D53/9477 , B01D2251/2067 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9022 , B01D2255/911 , B01D2255/9205 , B01D2258/012 , B01J29/072 , B01J37/0246 , F01N3/035 , F01N2370/04 , F01N2510/06 , F01N2510/0684 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： Systems and methods are provided for reducing NOx emissions from a vehicle including an engine having an exhaust. In one example, the system comprises a NOx reducing system coupled to the engine exhaust including a base metal zeolite, said NOx reducing system including a first layer with a first pore size and a second layer with a second pore size, said first pore size being smaller than said second pore size.
摘要翻译： 提供了用于减少包括具有排气的发动机的车辆的NOx排放的系统和方法。 在一个实例中，该系统包括联接到包括贱金属沸石的发动机排气的NOx还原系统，所述NOx还原系统包括具有第一孔径的第一层和具有第二孔径的第二层，所述第一孔径为 小于所述第二孔径。
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公开(公告)号：US20100077737A1
公开(公告)日：2010-04-01
申请号：US12242450
申请日：2008-09-30
CPC分类号： B01D53/9409 , B01D53/9477 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2255/20738 , B01D2255/20746 , B01D2255/50 , B01D2255/9022 , B01D2258/012 , B01D2258/014 , F01N3/035 , F01N3/2066 , F01N3/208 , F01N13/0093 , F01N13/0097 , F01N2370/04 , F01N2560/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： Systems and methods are provided for reducing NOx emissions from a vehicle including an engine having an exhaust. One example system comprises a NOx reducing system coupled to the engine exhaust, said NOx reducing system including a catalytic unit, said catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx conversion performance, lower than said first NOx conversion performance, in a second temperature range. The catalytic unit also comprises a second zeolite catalyst with a third NOx conversion performance, lower than said first NOx conversion performance, in the first temperature range and a fourth NOx conversion performance, higher than said second and third NOx conversion performances in the second temperature range, said first temperature range being higher than said second temperature range. The system further includes a controller configured to adjust an amount of reducing agent added to the NOx reducing system responsive to a temperature of the catalytic unit.
摘要翻译： 提供了用于减少包括具有排气的发动机的车辆的NOx排放的系统和方法。 一个示例性系统包括耦合到发动机排气的NOx还原系统，所述NOx还原系统包括催化单元，所述催化单元包括在第一温度范围内具有第一NOx转化性能和第二NOx转化性能的第一沸石催化剂， 比所述第一NOx转化性能高的第二温度范围。 催化单元还包括在第一温度范围内具有低于所述第一NOx转化性能的第三NOx转化性能的第二沸石催化剂和高于第二温度范围内的所述第二和第三NOx转化性能的第四NOx转化性能 所述第一温度范围高于所述第二温度范围。 该系统还包括控制器，该控制器被配置为响应催化单元的温度来调节添加到NOx还原系统中的还原剂的量。
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