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1.发明申请公开(公告)号：US20060096276A1
公开(公告)日：2006-05-11
申请号：US10985576
申请日：2004-11-09
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N3/0842 , F01N13/009 , F01N13/0097 , F02D41/0275 , Y02A50/2345 , Y02T10/22
摘要： A mechanical apparatus including a combustion engine, a conduit for transporting an exhaust stream away from the engine, a first catalytic NOx storage and conversion region disposed along the conduit, and a second catalytic NOx storage and conversion region disposed along the conduit at a location downstream from the first catalytic NOx storage and conversion region is disclosed. Each of the first catalytic NOx storage and conversion region and the second catalytic NOx storage and conversion region includes at least one catalytic metal configured to convert NOx to NO2 when the engine is supplied a lean air/fuel mixture, and at least one NOx adsorbing compound configured to adsorb NO2 for storage when the engine is supplied a lean air/fuel mixture, and wherein the one of the first and the second catalytic NOx storage and conversion regions has a lower concentration of catalytic metal than the other of the first and second catalytic NOx storage and conversion regions.
摘要翻译： 一种机械设备，包括内燃机，用于将排气流输送离开发动机的导管，沿导管设置的第一催化剂NO x X存储和转化区域，以及第二催化剂NO x 公开了沿着导管设置在第一催化剂NO x存储和转换区域下游的位置的存储和转换区域。 第一催化NO x X存储和转化区域和第二催化剂NO x存储和转化区域中的每一个包括至少一种催化金属，其被配置成将NO x x 在发动机供给稀薄空气/燃料混合物时，至少一个NO 2吸附化合物配置成吸附NO 2 / SUB>用于在发动机供应稀薄空气/燃料混合物时存储，并且其中第一和第二催化剂NO x存储和转化区域中的一个具有比其他催化剂更低的催化金属浓度 的第一和第二催化剂NO x存储和转化区域。
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2.发明授权Minimization of purge NOx release from NOx traps by optimizing the oxygen storage capacity 有权通过优化氧气存储容量，最大限度地减少NOx捕集器的NOx排放公开(公告)号：US07238640B2
公开(公告)日：2007-07-03
申请号：US10707659
申请日：2003-12-30
CPC分类号： B01D53/9422 , B01D53/96 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/2065 , B01D2255/908 , B01D2255/91 , B01J23/58 , B01J23/63 , B01J37/0244 , Y02C20/10
摘要： The present invention provides a catalyst for use in a NOx trap that has reduced NOx release during rich purges, increased NO conversion efficiency under stoichiometric conditions, and improved sulfur tolerance. The catalyst of this embodiment includes a precious metal, an oxygen storage component in contact with the precious metal, and a NOx storage material. The oxygen storage component in contact with the precious metal is present in an amount that provides sufficient oxygen storage capacity to reduce the NOx release from the NOx trap during rich purges to less than 20% of the NOx that is stored in the NOx trap across the operating temperature window of the NOx trap, increase the NOx conversion efficiency under stoichiometric conditions to a value greater than 70%, and increase the sulfur tolerance of the NOx trap.
摘要翻译： 本发明提供了一种用于在富集清洗期间减少NO x释放，在化学计量条件下提高NO转化效率和改善硫耐受性的NO X阱捕集器中的催化剂。 该实施方案的催化剂包括贵金属，与贵金属接触的储氧组分和NO x X存储材料。 与贵金属接触的储氧组分以提供足够的储氧能力的量存在，以便在富含清洗期间将NO x 2+释放从NO X 2捕集器中减少至 在NO 陷阱的工作温度窗口中存储在NO 陷阱中的小于20％的NO 增加了 在化学计量条件下的转化效率为大于70％的值，并且增加了NO x陷阱的耐硫性。
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3.发明申请MINIMIZATION OF PURGE NOx RELEASE FROM NOx TRAPS BY OPTIMIZING THE OXYGEN STORAGE CAPACITY 有权通过优化氧气储存能力，最大限度地减少氮氧化物排放的NOx排放公开(公告)号：US20050148463A1
公开(公告)日：2005-07-07
申请号：US10707659
申请日：2003-12-30
CPC分类号： B01D53/9422 , B01D53/96 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/2065 , B01D2255/908 , B01D2255/91 , B01J23/58 , B01J23/63 , B01J37/0244 , Y02C20/10
摘要： The present invention provides a catalyst for use in a NOx trap that has reduced NOx release during rich purges, increased NO conversion efficiency under stoichiometric conditions, and improved sulfur tolerance. The catalyst of this embodiment includes a precious metal, an oxygen storage component in contact with the precious metal, and a NOx storage material. The oxygen storage component in contact with the precious metal is present in an amount that provides sufficient oxygen storage capacity to reduce the NOx release from the NOx trap during rich purges to less than 20% of the NOx that is stored in the NOx trap across the operating temperature window of the NOx trap, increase the NOx conversion efficiency under stoichiometric conditions to a value greater than 70%, and increase the sulfur tolerance of the NOx trap.
摘要翻译： 本发明提供了一种用于在富集清洗期间减少NO x释放，在化学计量条件下提高NO转化效率和改善硫耐受性的NO X阱捕集器中的催化剂。 该实施方案的催化剂包括贵金属，与贵金属接触的储氧组分和NO x X存储材料。 与贵金属接触的储氧组分以提供足够的储氧能力的量存在，以便在富含清洗期间将NO x 2+释放从NO X 2捕集器中减少至 在NO 陷阱的工作温度窗口中存储在NO 陷阱中的小于20％的NO 增加了 在化学计量条件下的转化效率为大于70％的值，并且增加了NO x陷阱的耐硫性。
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4.发明授权公开(公告)号：US07673445B2
公开(公告)日：2010-03-09
申请号：US10985576
申请日：2004-11-09
申请人： Christian T. Goralski, Jr. , Joseph R. Theis , Gopichandra Surnilla , Justin Ura , Shane Elwart
发明人： Christian T. Goralski, Jr. , Joseph R. Theis , Gopichandra Surnilla , Justin Ura , Shane Elwart
IPC分类号： F01N3/00
CPC分类号： F01N3/0814 , F01N3/0842 , F01N13/009 , F01N13/0097 , F02D41/0275 , Y02A50/2345 , Y02T10/22
摘要： A mechanical apparatus including a combustion engine, a conduit for transporting an exhaust stream away from the engine, a first catalytic NOx storage and conversion region disposed along the conduit, and a second catalytic NOx storage and conversion region disposed along the conduit at a location downstream from the first catalytic NOx storage and conversion region is disclosed. Each of the first catalytic NOx storage and conversion region and the second catalytic NOx storage and conversion region includes at least one catalytic metal configured to convert NOx to NO2 when the engine is supplied a lean air/fuel mixture, and at least one NOx adsorbing compound configured to adsorb NO2 for storage when the engine is supplied a lean air/fuel mixture, and wherein the one of the first and the second catalytic NOx storage and conversion regions has a lower concentration of catalytic metal than the other of the first and second catalytic NOx storage and conversion regions.
摘要翻译： 一种机械设备，包括内燃发动机，用于将排气流输送离开发动机的导管，沿导管设置的第一催化剂NOx存储和转化区，以及沿下游位置设置的第二催化剂NOx储存和转化区 公开了从第一催化剂NOx储存和转化区域。 第一催化剂NOx存储和转化区域和第二催化剂NOx储存和转化区域中的每一个包括至少一种催化金属，其被配置为当发动机供应稀薄空气/燃料混合物时将NOx转化为NO 2，并且至少一种NOx吸附化合物 被配置为当所述发动机供应贫空气/燃料混合物时吸附NO 2用于储存，并且其中所述第一和第二催化剂NOx储存和转化区域中的所述一个与所述第一和第二催化剂中的另一个具有较低的催化金属浓度 NOx储存和转化区域。
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公开(公告)号：US20060100098A1
公开(公告)日：2006-05-11
申请号：US10904414
申请日：2004-11-09
申请人： Justin Ura , Joseph Theis , Christian Goralski
发明人： Justin Ura , Joseph Theis , Christian Goralski
IPC分类号： B01J23/40
CPC分类号： B01J23/58 , B01D53/9477 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/91 , B01J23/40 , B01J35/0006 , Y02T10/22
摘要： The present invention provides a thermally stable catalyst for treating automobile exhaust by-products is provided. The catalyst of the invention comprises a first section that includes a precious metal present in a first concentration and a second section that includes a precious metal present in a second concentration. The catalyst of the invention is characterized by a unique precious metal concentration profile in which the first concentration of the precious metal is lower than the second concentration of the precious metal. When placed with an automobile exhaust system, the second section is positioned downstream of the first section. The present invention also provides a lean NOx trap utilizing the unique precious metal concentration profile. The NOx trap is found to possess improved NO storage capacity upon thermal aging relative to a NOx trap with the same total amount of precious metal deposited uniformly over the volume of the trap.
摘要翻译： 本发明提供一种用于处理汽车尾气副产物的热稳定催化剂。 本发明的催化剂包括第一部分，其包括以第一浓度存在的贵金属和包含以第二浓度存在的贵金属的第二部分。 本发明的催化剂的特征在于，贵金属的第一浓度低于贵金属的第二浓度的独特的贵金属浓度分布。 当与汽车排气系统一起放置时，第二部分位于第一部分的下游。 本发明还提供一种利用独特的贵金属浓度分布的贫NO X阱。 发现NO 阱在热老化时具有相对于NO x陷阱具有改善的NO存储容量，其中相同的贵金属总量均匀地沉积在 陷阱。
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公开(公告)号：US20060191257A1
公开(公告)日：2006-08-31
申请号：US11069526
申请日：2005-02-28
申请人： Christian Goralski , Joseph Theis , Justin Ura
发明人： Christian Goralski , Joseph Theis , Justin Ura
CPC分类号： F01N3/0814 , F01N3/0842 , F01N3/106 , F01N13/009 , F01N2560/025 , F02D41/028 , F02D2200/0404 , F02M26/21 , F02M26/47
摘要： A method of desulfating a catalytic NOx storage and conversion device is disclosed, wherein the method includes determining an amount of sulfur stored in the catalytic NOx storage and conversion device; determining an interval for exposing the catalytic NOx storage and conversion device to a rich exhaust stream based upon the determined amount of sulfur stored, wherein the interval is longer for lower amounts of sulfur stored and shorter for higher amounts of sulfur stored; and exposing the catalytic NOx storage and conversion device to the rich exhaust stream for the determined interval.
摘要翻译： 公开了一种脱硫催化NO x X存储和转化装置的方法，其中所述方法包括确定储存在催化NO x存储和转换装置中的硫的量; 基于所确定的硫的量确定用于将催化NO x X存储和转化装置暴露于富排气流的间隔，其中对于较低量的硫储存而言间隔更长，较高量的较短量 的硫储存; 并将催化NO x X存储和转换装置暴露于浓排气流达所确定的间隔。
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公开(公告)号：US07870724B2
公开(公告)日：2011-01-18
申请号：US10904414
申请日：2004-11-09
IPC分类号： B01D53/56 , B01D53/94 , B01J23/02 , B01J23/04 , B01J23/38 , B01J23/40 , B01J23/58 , F01N3/10 , F01N3/20 , F01N3/28
CPC分类号： B01J23/58 , B01D53/9477 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/91 , B01J23/40 , B01J35/0006 , Y02T10/22
摘要： The present invention provides a thermally stable catalyst for treating automobile exhaust by-products is provided. The catalyst of the invention comprises a first section that includes a precious metal present in a first concentration and a second section that includes a precious metal present in a second concentration. The catalyst of the invention is characterized by a unique precious metal concentration profile in which the first concentration of the precious metal is lower than the second concentration of the precious metal. When placed with an automobile exhaust system, the second section is positioned downstream of the first section. The present invention also provides a lean NOx trap utilizing the unique precious metal concentration profile. The NOx trap is found to possess improved NOx conversion performance relative to a NOx trap with the same total amount of precious metal deposited uniformly over the volume of the trap.
摘要翻译： 本发明提供一种用于处理汽车尾气副产物的热稳定催化剂。 本发明的催化剂包括第一部分，其包括以第一浓度存在的贵金属和包含以第二浓度存在的贵金属的第二部分。 本发明的催化剂的特征在于，贵金属的第一浓度低于贵金属的第二浓度的独特的贵金属浓度分布。 当与汽车排气系统一起放置时，第二部分位于第一部分的下游。 本发明还提供了利用独特的贵金属浓度分布的贫NOx捕集器。 发现NOx捕集器相对于具有均匀沉积在捕集器的体积上的相同总量的贵金属的NOx捕集器具有改善的NOx转化性能。
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公开(公告)号：US07481046B2
公开(公告)日：2009-01-27
申请号：US11069526
申请日：2005-02-28
CPC分类号： F01N3/0814 , F01N3/0842 , F01N3/106 , F01N13/009 , F01N2560/025 , F02D41/028 , F02D2200/0404 , F02M26/21 , F02M26/47
摘要： A method of desulfating a catalytic NOx storage and conversion device is disclosed, wherein the method includes determining an amount of sulfur stored in the catalytic NOx storage and conversion device; determining an interval for exposing the catalytic NOx storage and conversion device to a rich exhaust stream based upon the determined amount of sulfur stored, wherein the interval is longer for lower amounts of sulfur stored and shorter for higher amounts of sulfur stored; and exposing the catalytic NOx storage and conversion device to the rich exhaust stream for the determined interval.
摘要翻译： 公开了一种催化NOx储存和转化装置脱硫的方法，其中所述方法包括确定存储在催化NOx储存和转化装置中的硫的量; 确定基于所确定的硫存储量将催化剂NO x存储和转化装置暴露于富排气流的间隔，其中对于较低量的硫储存而言较少量的硫的间隔更长; 并将所述催化剂NOx储存和转化装置暴露于所述浓排气流中所确定的间隔。
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