公开(公告)号：US08835349B2

公开(公告)日：2014-09-16

申请号：US13879830

申请日：2011-10-20

申请人： Takeshi Nobukawa

发明人： Takeshi Nobukawa

IPC分类号： B01J23/42 ,  F01N3/08 ,  B01J23/63 ,  B01D53/94

CPC分类号： B01D53/9427 ,  B01J23/63 ,  F01N3/0807 ,  F01N3/0864 ,  F01N2510/0682 ,  Y02T10/20

摘要： An exhaust purifying catalyst includes: a substrate; a first-stage catalyst that includes an oxygen storage capacity (OSC) material and that is provided on the substrate on an upstream side thereof in an exhaust gas flow direction; and a second-stage catalyst that includes an OSC material and that is provided on the substrate on a downstream side thereof in an exhaust gas flow direction. The OSC material included in the first-stage catalyst and the second-stage catalyst includes OSC material on which a noble metal is not supported. The proportion of the amount of the OSC material, on which a noble metal is not supported, and that is included in the second-stage catalyst with respect to the combined amount of the OSC material, on which a noble metal is not supported, and that is included in the first-stage catalyst and the second-stage catalyst is in a range of from 0 to 50 wt %.

摘要翻译： 排气净化催化剂包括：基材; 第一级催化剂，其包括储氧容量（OSC）材料，并且在废气流动方向的上游侧设置在所述基板上; 以及第二级催化剂，其包括OSC材料，并且在排气流动方向的下游侧设置在所述基板上。 包含在第一级催化剂和第二级催化剂中的OSC材料包括不负载贵金属的OSC材料。 相对于不负载贵金属的OSC材料的组合量，不含有贵金属的OSC材料的量的比例和第二阶段催化剂中所含的量的比例，以及 第一级催化剂和第二级催化剂的含量在0〜50重量％的范围内。

公开(公告)号：US20130203588A1

公开(公告)日：2013-08-08

申请号：US13879830

申请日：2011-10-20

申请人： Takeshi Nobukawa

发明人： Takeshi Nobukawa

IPC分类号： B01D53/94 ,  B01J23/63

CPC分类号： B01D53/9427 ,  B01J23/63 ,  F01N3/0807 ,  F01N3/0864 ,  F01N2510/0682 ,  Y02T10/20

摘要： An exhaust purifying catalyst includes: a substrate; a first-stage catalyst that includes an oxygen storage capacity (OSC) material and that is provided on the substrate on an upstream side thereof in an exhaust gas flow direction; and a second-stage catalyst that includes an OSC material and that is provided on the substrate on a downstream side thereof in an exhaust gas flow direction. The OSC material included in the first-stage catalyst and the second-stage catalyst includes OSC material on which a noble metal is not supported. The proportion of the amount of the OSC material, on which a noble metal is not supported, and that is included in the second-stage catalyst with respect to the combined amount of the OSC material, on which a noble metal is not supported, and that is included in the first-stage catalyst and the second-stage catalyst is in a range of from 0 to 50 wt %.

摘要翻译： 排气净化催化剂包括：基材; 第一级催化剂，其包括储氧容量（OSC）材料，并且在废气流动方向的上游侧设置在所述基板上; 以及第二级催化剂，其包括OSC材料，并且在排气流动方向的下游侧设置在所述基板上。 包含在第一级催化剂和第二级催化剂中的OSC材料包括不负载贵金属的OSC材料。 相对于不负载贵金属的OSC材料的组合量，不含有贵金属的OSC材料的量的比例和第二阶段催化剂中所含的量的比例，以及 第一级催化剂和第二级催化剂的含量在0〜50重量％的范围内。

公开(公告)号：US08853120B2

公开(公告)日：2014-10-07

申请号：US13981942

申请日：2012-01-26

申请人： Yuki Aoki ,  Takeshi Nobukawa

发明人： Yuki Aoki ,  Takeshi Nobukawa

IPC分类号： B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J21/04 ,  B01J20/00 ,  B01J37/02 ,  B01J35/00 ,  B01J23/63 ,  B01D53/94

CPC分类号： B01J23/63 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22 ,  Y10S502/52712 ,  Y10S502/52713

摘要： An exhaust gas purification catalyst has a substrate, a lower catalyst layer that is formed on the substrate and contains at least one of Pd and Pt, and an upper catalyst layer that is formed on the lower catalyst layer and contains Rh. A region that does not contain the upper catalyst layer is disposed on the exhaust gas upstream side of this exhaust gas purification catalyst. The lower catalyst layer includes a front-stage lower catalyst layer on the exhaust gas upstream side and a rear-stage lower catalyst layer on the exhaust gas downstream side. The front-stage lower catalyst layer contains an oxygen storage material.

摘要翻译： 废气净化催化剂具有基材，形成在基材上的含有Pd和Pt中的至少一种的下催化剂层和形成在下催化剂层上并含有Rh的上催化剂层。 在该排气净化催化剂的排气上游侧配置不含有上层催化剂层的区域。 下部催化剂层包括排气上游侧的前段下催化剂层和排气下游侧的后段下催化剂层。 前段下催化剂层含有储氧材料。

公开(公告)号：US20100190640A1

公开(公告)日：2010-07-29

申请号：US12665108

申请日：2008-06-26

申请人： Takeshi Nobukawa ,  Naoto Miyoshi

发明人： Takeshi Nobukawa ,  Naoto Miyoshi

IPC分类号： B01J23/10 ,  B01J32/00 ,  B01J23/42 ,  B01J23/02 ,  B01J21/04

CPC分类号： B01J23/63 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2092 ,  B01D2255/91 ,  B01D2255/9202 ,  B01D2257/404 ,  B01D2258/012 ,  B01J23/10 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1019 ,  B01J37/031 ,  B01J37/04 ,  F01N3/0814 ,  F01N2510/06

摘要： A catalytic support 10 is made of rare-earth-element-oxide fine particles (e.g., ceria fine particles 11) comprising primary particles of a rare-earth element oxide, alumina fine particles 12 comprising primary particles of alumna, and barium-compound fine particles 13 comprising primary particles of a barium compound, rare-earth-element-oxide fine particles, alumina fine particles 12 and barium-compound fine particles 13 which are mixed with each other. A primary particle diameter of the rare-earth-element-oxide fine particles is 5 nm or less, and a primary particle diameter of the barium-compound fine particles 13 is 10 nm or less. Platinum fine particles 20 are supported, of this catalytic support 10, on the rare-earth-element-oxide fine particles virtually. It is possible to suppress the granular growth of platinum, which serves an oxidizing catalyst, and the granular growth of barium, which serves an NOx storage material, more securely.

摘要翻译： 催化剂载体10由包含稀土元素氧化物的一次粒子的氧化锆稀土微粒（例如，二氧化铈微粒11），氧化铝微粒12和氧化钡微粒构成， 包含彼此混合的钡化合物的一次粒子，稀土元素氧化物微粒，氧化铝微粒12和钡化合物微粒13的粒子13。 稀土元素氧化物微粒的一次粒径为5nm以下，钡复合微粒13的一次粒径为10nm以下。 实际上，铂微粒20在该催化载体10上负载在稀土元素氧化物微粒上。 可以更可靠地抑制用于氧化催化剂的铂的粒状生长和用于NOx储存材料的钡的颗粒生长。

公开(公告)号：US09163540B2

公开(公告)日：2015-10-20

申请号：US14347860

申请日：2012-09-17

申请人： Takeshi Nobukawa

发明人： Takeshi Nobukawa

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N3/18 ,  F01N3/22 ,  F01N3/32 ,  F01N9/00 ,  F01N13/02

CPC分类号： F01N3/18 ,  F01N3/103 ,  F01N3/225 ,  F01N3/323 ,  F01N9/00 ,  F01N13/02 ,  F01N2900/1602 ,  Y02T10/20 ,  Y02T10/47

摘要： An exhaust gas control apparatus for an internal combustion engine includes a NOx purification catalyst disposed in an exhaust passage of the internal combustion engine and carrying a first catalyst metal on a first catalyst carrier, an oxidation catalyst disposed in the downstream exhaust passage of the NOx purification catalyst and carrying second catalyst metals including a base metal on a second catalyst carrier, an air introduction apparatus introducing air into an upstream of the oxidation catalyst, and a temperature detector detecting a temperature of the oxidation catalyst. When an oxidation catalyst temperature is a predetermined temperature or lower, an air-fuel ratio of the exhaust gas into the oxidation catalyst is controlled to a more fuel lean ratio than the stoichiometric air-fuel ratio. When the oxidation catalyst temperature exceeds the predetermined temperature, the air-fuel ratio of the exhaust gas into the oxidation catalyst is controlled to the stoichiometric air-fuel ratio.

摘要翻译： 一种用于内燃机的排气控制装置，具备：NOx净化催化剂，其配置在内燃机的排气通路内，在第一催化剂载体上载持第一催化剂金属;氧化催化剂，其配置在NOx净化的下游排气通路 催化剂并在第二催化剂载体上承载包含贱金属的第二催化剂金属，将空气引入氧化催化剂的上游的空气引入装置和检测氧化催化剂的温度的温度检测器。 当氧化催化剂温度为预定温度或更低时，将排放到氧化催化剂中的排气的空燃比控制为比理论空燃比更多的燃料稀薄比。 当氧化催化剂温度超过预定温度时，将进入氧化催化剂的废气的空燃比控制为理论空燃比。

公开(公告)号：US09376327B2

公开(公告)日：2016-06-28

申请号：US13640237

申请日：2011-04-12

申请人： Akira Morikawa ,  Kae Yamamura ,  Akihiko Suda ,  Naoki Takahashi ,  Oji Kuno ,  Takeshi Nobukawa ,  Akiya Chiba ,  Ryuta Fujii

发明人： Akira Morikawa ,  Kae Yamamura ,  Akihiko Suda ,  Naoki Takahashi ,  Oji Kuno ,  Takeshi Nobukawa ,  Akiya Chiba ,  Ryuta Fujii

IPC分类号： B01J23/00 ,  B01J23/10 ,  B01J21/00 ,  B01J25/00 ,  B01J29/00 ,  C01G25/00 ,  B01J35/04 ,  C04B35/486 ,  C04B35/626

CPC分类号： C01G25/00 ,  B01J35/04 ,  C01P2002/30 ,  C01P2002/36 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/74 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/12 ,  C04B35/486 ,  C04B35/6262 ,  C04B2235/3229 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/652 ,  C04B2235/656 ,  C04B2235/663 ,  C04B2235/95

摘要： A ceria-zirconia base composite oxide contains a composite oxide of ceria and zirconia. In the ceria-zirconia base composite oxide, a content ratio between cerium and zirconium in the composite oxide is in a range from 43:57 to 48:52 in terms of molar ratio ([cerium]:[zirconium]). An intensity ratio of a diffraction line at 2θ=14.5° to a diffraction line at 2θ=29° {I(14/29) value} and an intensity ratio of a diffraction line at 2θ=28.5° to the diffraction line at 2θ=29° {I(28/29) value}, which are calculated from an X-ray diffraction pattern obtained by an X-ray diffraction measurement using CuKa after heating under a temperature condition of 1100° C. in air for 5 hours, respectively satisfy the following conditions: I(14/29) value≧0.015, and I(28/29) value≦0.08.

摘要翻译： 二氧化铈 - 氧化锆基复合氧化物含有二氧化铈和氧化锆的复合氧化物。 在二氧化铈 - 氧化锆基复合氧化物中，复合氧化物中的铈与锆的含量比以摩尔比（[铈]：[锆]）计为43:57〜48:52。 衍射线在2θ处的衍射线的强度比，= 2°时的衍射线= 14.5°，λ= 29°{I（14/29）值}，衍射线在2θ处的衍射线与衍射线的强度比= 28.5° 在2℃下= 29°{I（28/29）值}，其由在空气中在1100℃的温度条件下加热后通过使用CuKa的X射线衍射测量获得的X射线衍射图来计算 5小时分别满足以下条件：I（14/29）值≧0.015，I（28/29）值＆nlE; 0.08。

公开(公告)号：US20140331652A1

公开(公告)日：2014-11-13

申请号：US14362444

申请日：2011-12-07

申请人： Hiroshi Tanaka ,  Yusuke Saito ,  Takeshi Nobukawa ,  Masao Watanabe

发明人： Hiroshi Tanaka ,  Yusuke Saito ,  Takeshi Nobukawa ,  Masao Watanabe

IPC分类号： F01N11/00

CPC分类号： F01N11/00 ,  B01D53/9445 ,  B01D53/9495 ,  B01D2255/1025 ,  B01D2255/2092 ,  F01N9/00 ,  F01N11/007 ,  F01N2430/06 ,  F01N2550/02 ,  F01N2900/1602 ,  F01N2900/1624 ,  F02D41/123 ,  F02D2041/0265 ,  F02D2200/0802 ,  F02N2200/026 ,  Y02T10/22 ,  Y02T10/47

摘要： The invention relates to an exhaust gas purification device of an internal combustion engine comprising a catalyst (45) having an active element and a composite oxidation which carries the active element in an exhaust passage (40), the active element transforming into the composite oxide as a solid solution when the catalyst temperature is higher than or equal to a predetermined solid solution temperature and the atmosphere of the interior of the catalyst is an oxidation atmosphere and the active element precipitating from the composite oxide when the catalyst temperature is higher than or equal to a predetermined precipitation temperature and the atmosphere of the interior of the catalyst is a reduction atmosphere. According to the invention, in case that the performance of the fuel supply stop control is inhibited when the catalyst temperature is higher than or equal to the performance inhibiting temperature, a temperature lower than a base temperature of the performance inhibiting temperature is set as the performance inhibiting temperature while the use degree of the catalyst is lower than or equal to a predetermined degree and in case that the performance of the fuel supply amount increase control is permitted when the catalyst temperature is higher than or equal to a performance permitting temperature, a temperature higher than a base temperature of the performance permitting temperature is set as the performance permitting temperature while the use degree of the catalyst is smaller than or equal to the predetermined degree.

摘要翻译： 本发明涉及一种内燃机的废气净化装置，其包括具有活性元素的催化剂（45）和在排气通道（40）中承载活性元素的复合氧化物，活性元素转化为复合氧化物，如 催化剂温度高于或等于预定固溶温度时的固溶体，催化剂内部的气氛为氧化气氛，当催化剂温度高于或等于催化剂温度时，活性组分从复合氧化物析出 预定的沉淀温度和催化剂内部的气氛是还原气氛。 根据本发明，当催化剂温度高于或等于性能抑制温度时，在禁止燃料供给停止控制的性能的情况下，将低于性能抑制温度的基础温度的温度设定为性能 在催化剂的使用程度低于或等于预定程度的情况下，并且当催化剂温度高于或等于性能允许温度时允许燃料供给量增加控制的性能的情况下，抑制温度，温度 将高于性能允许温度的基础温度设定为性能允许温度，同时催化剂的使用程度小于或等于预定程度。

公开(公告)号：US20140216013A1

公开(公告)日：2014-08-07

申请号：US14232694

申请日：2011-12-16

申请人： Mayuko Osaki ,  Kazutoshi Akashi ,  Masao Watanabe ,  Shigeharu Tagagi ,  Takeshi Nobukawa

发明人： Mayuko Osaki ,  Kazutoshi Akashi ,  Masao Watanabe ,  Shigeharu Tagagi ,  Takeshi Nobukawa

IPC分类号： F01N3/20 ,  F01N3/30

CPC分类号： F01N3/20 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/22 ,  F01N3/30 ,  F01N11/007 ,  F01N13/009 ,  F01N2550/03 ,  F01N2570/14 ,  F01N2570/16 ,  F01N2900/1624 ,  F02D41/0275 ,  F02D41/0295 ,  F02D41/126 ,  F02D41/1439 ,  F02D41/1456 ,  F02D2250/36 ,  Y02A50/2344 ,  Y02T10/47

摘要： Provided is an exhaust purification system for an internal combustion engine. The exhaust purification system comprising: a NOX purifying catalyst arranged in an exhaust passage of the internal combustion engine, wherein the NOX purifying catalyst comprises a base metal supported on a catalyst support; an oxygen sensor arranged at the downstream side of the NOX purifying catalyst in the exhaust passage; and an air-fuel, ratio control means for controlling the air-fuel ratio of exhaust gas flowing into the NOX purifying catalyst; wherein when the NOX purifying catalyst suffers from predetermined oxygen poisoning, the air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a first air-fuel ratio wherein the first air-fuel ratio is richer than a theoretical air-fuel ratio, and then the air-fuel ratio control means switches the air-fuel ratio of the exhaust gas, which flows into the NOX purifying catalyst, to a second air-fuel ratio on the basis of an output value from the oxygen sensor wherein the second air-fuel ratio is leaner than the first air-fuel ratio.

摘要翻译： 提供了一种用于内燃机的排气净化系统。 所述排气净化系统包括：排出在所述内燃机的排气通路中的NO x净化催化剂，其中所述NO x净化催化剂包含负载在催化剂载体上的贱金属; 氧气传感器，其布置在排气通道中的NOx净化催化剂的下游侧; 以及空气燃料比率控制装置，用于控制流入NOX净化催化剂的废气的空燃比; 其特征在于，当所述NOx净化催化剂受到预定的氧中毒时，所述空燃比控制装置将流入所述NO x净化催化剂的排气的空燃比控制为第一空燃比， 燃料比比理论空燃比更浓，然后空燃比控制装置将流入NOX净化催化剂的废气的空燃比基于第二空燃比 来自氧传感器的输出值，其中第二空燃比比第一空燃比更稀。

公开(公告)号：US20130310248A1

公开(公告)日：2013-11-21

申请号：US13981942

申请日：2012-01-26

申请人： Yuki Aoki ,  Takeshi Nobukawa

发明人： Yuki Aoki ,  Takeshi Nobukawa

IPC分类号： B01J23/63

CPC分类号： B01J23/63 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22 ,  Y10S502/52712 ,  Y10S502/52713

摘要： Provided is an exhaust gas purification catalyst (10) that has a substrate (11), a lower catalyst layer (12) that is formed on the substrate and contains at least one of Pd and Pt, and an upper catalyst layer (13) that is formed on the lower catalyst layer and contains Rh. A region that does not contain the upper catalyst layer is disposed on the exhaust gas upstream side of this exhaust gas purification catalyst, and the lower catalyst layer is formed of a front-stage lower catalyst layer (12a) on the exhaust gas upstream side and a rear-stage lower catalyst layer (12b) on the exhaust gas downstream side. The Front-stage lower, catalyst layer contains an oxygen storage material.

摘要翻译： 本发明提供一种排气净化催化剂（10），其具有基板（11），形成在基板上的含有Pd和Pt中的至少一种的下部催化剂层（12）和上部催化剂层（13） 形成在下部催化剂层上并含有Rh。 在该排气净化催化剂的排气上游侧配置不含有上催化剂层的区域，下催化剂层由排气上游侧的前段下催化剂层（12a）形成， 排气下游侧的后段下催化剂层（12b）。 前级下层催化剂层含有储氧材料。

公开(公告)号：US09517434B2

公开(公告)日：2016-12-13

申请号：US14378753

申请日：2012-11-09

申请人： Takeshi Nobukawa

发明人： Takeshi Nobukawa

IPC分类号： B01D50/00 ,  B01D53/56 ,  F01N3/08 ,  B01D53/94 ,  B01J23/72 ,  B01J23/83 ,  B01J23/89

CPC分类号： B01D53/565 ,  B01D53/9418 ,  B01D53/9431 ,  B01D2251/2062 ,  B01D2255/106 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/65 ,  B01D2255/904 ,  B01D2257/404 ,  B01J23/72 ,  B01J23/83 ,  B01J23/8926 ,  B01J23/894 ,  F01N3/08 ,  F01N2510/0682 ,  F01N2560/026

摘要： A catalyst system for exhaust gas purification which comprises a first-stage base metal catalyst located upstream and a second-stage base metal catalyst located downstream, wherein the first-stage base metal catalyst comprises at least one oxide support selected from the group consisting of alumina, ceria, zirconia, yttria, and titania and Cu metal and/or a Cu oxide supported thereon, and in cases where the amount of NOx in the exhaust gas has become or exceeded an NOx criterion, the state of the exhaust gas is switched from slightly rich to rich.

摘要翻译： 一种用于废气净化的催化剂体系，其包括位于上游的第一级贱金属催化剂和位于下游的第二级贱金属催化剂，其中所述第一级贱金属催化剂包含至少一种选自氧化铝 ，二氧化铈，氧化锆，氧化钇和二氧化钛以及Cu金属和/或其上的Cu氧化物，并且在废气中的NOx的量已经或超过NOx标准的情况下，排气的状态从 略丰富。