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    Particulate matter (pm) oxidizing catalyst
    1.
    发明公开
    Particulate matter (pm) oxidizing catalyst 审中-公开
    Katalysator zur Oxidierung von Schwebstoffen

    公开(公告)号：EP1920831A2

    公开(公告)日：2008-05-14

    申请号：EP07021485.3

    申请日：2007-11-05

    申请人： NISSAN MOTOR CO., LTD.

    发明人： Shimada, Maki ,  Ito, Junji ,  Miyamura, Toshiharu ,  Hanaki, Yasunari ,  Chida, Shigeru ,  Akaishi, Shinichi

    IPC分类号： B01J23/10 ,  B01D53/94 ,  F01N3/035 ,  B01J23/34 ,  B01J23/63 ,  B01J23/656 ,  B01J23/83 ,  B01J23/889 ,  B01J23/89 ,  B01J35/00

    摘要： A particulate matter oxidizing catalyst includes: at least one metal selected from the group consisting of gallium, manganese, iron, cobalt, nickel, copper, yttrium, zirconium, niobium, molybdenum, silver, lanthanum, praseodymium, neodymium and gold; and cerium, wherein a first oxide includes: the cerium, and a first metal which is at least one element selected from the group consisting of: gallium, manganese, iron, cobalt and nickel, wherein a second oxide includes: the cerium, and a second metal which is at least one element selected from the group consisting of: praseodymium, zirconium and aluminum, and wherein the second oxide and the first oxide have a content ratio of second oxide/(first oxide + second oxide)= 0.1 by mass to 0.8 by mass.

    摘要翻译： 颗粒物氧化催化剂包括：选自镓，锰，铁，钴，镍，铜，钇，锆，铌，钼，银，镧，镨，钕和金中的至少一种金属; 和铈，其中第一氧化物包括：铈，以及选自镓，锰，铁，钴和镍中的至少一种元素的第一金属，其中第二氧化物包括：铈，和 第二金属，其是选自由镨，锆和铝组成的组中的至少一种元素，并且其中所述第二氧化物和所述第一氧化物具有第二氧化物/（第一氧化物+第二氧化物）的含量比= 0.1质量％ 0.8质量％。

    Catalyst system for purifying exhaust gas
    3.
    发明公开
    Catalyst system for purifying exhaust gas 审中-公开
    用于净化废气的催化剂体系

    公开(公告)号：EP1108863A2

    公开(公告)日：2001-06-20

    申请号：EP00127386.1

    申请日：2000-12-13

    申请人： Nissan Motor Co., Ltd.

    发明人： Hanaki, Yasunari ,  Suga, Katsuo

    IPC分类号： F01N3/20

    CPC分类号： B01D53/9454 ,  B01D53/9495 ,  B01D2251/104 ,  B01D2259/804 ,  F01N3/206 ,  F01N13/009 ,  F01N2240/30 ,  F01N2570/14 ,  F01N2610/04 ,  Y02A50/2344 ,  Y02C20/10 ,  Y02T10/22

    摘要： An exhaust gas purifying system for an automotive internal combustion engine which discharges oxygen-excessive exhaust gas under lean-burn operation. The exhaust gas purifying system comprises a NOx reducing catalyst for reducing NOx in the presence of at least hydrogen serving as reducing agent. The NOx reducing catalyst is disposed in an exhaust gas passageway of the engine. The NOx reducing catalyst includes a porous substrate, and platinum and cesium carried on the porous substrate. A catalyst is disposed in the exhaust gas passageway in order to produce hydrogen so as to enrich the oxygen-excessive exhaust gas with hydrogen before the oxygen-excessive exhaust gas reaches the NOx reducing catalyst. The oxygen-excessive exhaust gas enriched with hydrogen is introduced through the exhaust gas passageway to the NOx reducing catalyst. Here, the oxygen-excessive exhaust gas enriched with hydrogen is brought into contact with the NOx reducing catalyst under a condition in which temperature of at least one of the NOx reducing catalyst and the oxygen-excessive exhaust gas enriched with hydrogen is within a range of from 250 to 600 °C.

    Catalyst system for purifying exhaust gas
    7.
    发明公开
    Catalyst system for purifying exhaust gas 审中-公开
    Katalysatorsystem zur Reinigung von Abgasen

    公开(公告)号：EP1108863A3

    公开(公告)日：2003-06-04

    申请号：EP00127386.1

    申请日：2000-12-13

    申请人： Nissan Motor Co., Ltd.

    发明人： Hanaki, Yasunari ,  Suga, Katsuo

    IPC分类号： F01N3/20 ,  B01D53/94

    CPC分类号： B01D53/9454 ,  B01D53/9495 ,  B01D2251/104 ,  B01D2259/804 ,  F01N3/206 ,  F01N13/009 ,  F01N2240/30 ,  F01N2570/14 ,  F01N2610/04 ,  Y02A50/2344 ,  Y02C20/10 ,  Y02T10/22

    摘要： An exhaust gas purifying system for an automotive internal combustion engine which discharges oxygen-excessive exhaust gas under lean-burn operation. The exhaust gas purifying system comprises a NOx reducing catalyst for reducing NOx in the presence of at least hydrogen serving as reducing agent. The NOx reducing catalyst is disposed in an exhaust gas passageway of the engine. The NOx reducing catalyst includes a porous substrate, and platinum and cesium carried on the porous substrate. A catalyst is disposed in the exhaust gas passageway in order to produce hydrogen so as to enrich the oxygen-excessive exhaust gas with hydrogen before the oxygen-excessive exhaust gas reaches the NOx reducing catalyst. The oxygen-excessive exhaust gas enriched with hydrogen is introduced through the exhaust gas passageway to the NOx reducing catalyst. Here, the oxygen-excessive exhaust gas enriched with hydrogen is brought into contact with the NOx reducing catalyst under a condition in which temperature of at least one of the NOx reducing catalyst and the oxygen-excessive exhaust gas enriched with hydrogen is within a range of from 250 to 600 °C.

    摘要翻译： 一种用于汽车内燃机的废气净化系统，其在稀薄燃烧操作下排出过量的氧气。 废气净化系统包括用于在至少存在氢气作为还原剂的情况下还原NOx的NOx还原催化剂。 NOx还原催化剂设置在发动机的废气通道中。 NOx还原催化剂包括多孔基材，并且载持在多孔基材上的铂和铯。 在废气通道中设置催化剂以产生氢气，以便在氧过量废气到达NOx还原催化剂之前用氢气富集过氧化废气。 富含氢气的过多的废气通过废气通道引入NOx还原催化剂。 这里，在NO x还原催化剂和富含氢气的过量废气中的至少一种的温度在以下的条件下，富含氢的氧过量排气与NOx还原催化剂接触， 从250℃到600℃

    Exhaust gas purifying system
    8.
    发明公开
    Exhaust gas purifying system 有权
    废气净化系统

    公开(公告)号：EP1094206A3

    公开(公告)日：2003-03-12

    申请号：EP00123007.7

    申请日：2000-10-23

    申请人： Nissan Motor Co., Ltd.

    发明人： Yamamoto, Shinji ,  Kanesaka, Hiroyuki ,  Onodera, Hitoshi ,  Hanaki, Yasunari ,  Suga, Katsuo ,  Morita, Hiroshi ,  Hiramoto, Yoshiaki ,  Kaneko, Hiroaki

    IPC分类号： F01N3/20 ,  B01D53/94 ,  F02D41/02

    CPC分类号： B01J35/0006 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/9431 ,  B01D53/9495 ,  B01J23/58 ,  B01J23/60 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/206 ,  F01N13/009 ,  F01N2240/30 ,  F01N2330/06 ,  F01N2610/04 ,  F01N2610/08 ,  F02D41/0275

    摘要： An exhaust gas purifying system for an automotive internal combustion engine comprises a NOx treating catalyst for reducing NOx disposed in an exhaust gas passageway of a combustion device, to reduce NOx in presence of reducing components in exhaust gas. Additionally, a hydrogen enriching device is disposed upstream of the NOx treating catalyst with respect to flow of exhaust gas from the combustion device and arranged to increase a ratio of hydrogen to total reducing components in at least one of combustion gas and exhaust gas so as to meet relations represented by following formulae (1) and (2), when reduction of NOx is carried out by the NOx treating catalyst:[H2 / TR]d > [H2 / TR]u[H2 / TR]d ≥ 0.3 where [H2 / TR]u is a ratio between a concentration [H2]u of hydrogen and a concentration [TR]u of total reducing components in at least one of exhaust gas in the exhaust gas passageway upstream of the hydrogen enriching device and combustion gas in a state before undergoing the hydrogen ratio increasing by the hydrogen enriching means; and [H2 / TR]d is a ratio between a concentration [H2]d of hydrogen and a concentration [TR]d of total reducing components in exhaust gas in the exhaust gas passageway upstream of the NOx treating catalyst and downstream of the hydrogen enriching device.

    摘要翻译： 用于汽车内燃机的排气净化系统包括用于还原布置在燃烧装置的排气通道中的NOx的NOx处理催化剂，以在排气中的还原成分存在的情况下还原NOx。 另外，关于来自燃烧装置的排气的流动，在NO x处理催化剂的上游设置富氢装置，并且设置成增加燃烧气体和排气中的至少一个中的氢与全部还原成分的比率，以便 当由NO X处理催化剂进行NO X还原时，满足由下式（1）和（2）表示的关系：[H 2 / TR] d> [H 2 / H2 / TR] u是氢浓度[H2] u与富氢装置上游的废气通道中的废气中的至少一个中的总还原组分的浓度[TR] u之间的比率， 通过氢富集装置使氢比增加之前的状态; [H 2 / TR] d是氢处理浓度[H 2] d与NOx处理催化剂上游废气通道中排气中总还原成分浓度[TR] d之间的比率， 设备。

    Exhaust gas purifying system
    9.
    发明公开
    Exhaust gas purifying system 有权
    废气净化系统

    公开(公告)号：EP1094206A2

    公开(公告)日：2001-04-25

    申请号：EP00123007.7

    申请日：2000-10-23

    申请人： Nissan Motor Co., Ltd.

    发明人： Yamamoto, Shinji ,  Kanesaka, Hiroyuki ,  Onodera, Hitoshi ,  Hanaki, Yasunari ,  Suga, Katsuo ,  Morita, Hiroshi ,  Hiramoto, Yoshiaki ,  Kaneko, Hiroaki

    IPC分类号： F01N3/20 ,  B01D53/94 ,  F02D41/02

    CPC分类号： B01J35/0006 ,  B01D53/8631 ,  B01D53/8696 ,  B01D53/9431 ,  B01D53/9495 ,  B01J23/58 ,  B01J23/60 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/206 ,  F01N13/009 ,  F01N2240/30 ,  F01N2330/06 ,  F01N2610/04 ,  F01N2610/08 ,  F02D41/0275

    摘要： An exhaust gas purifying system for an automotive internal combustion engine comprises a NOx treating catalyst for reducing NOx disposed in an exhaust gas passageway of a combustion device, to reduce NOx in presence of reducing components in exhaust gas. Additionally, a hydrogen enriching device is disposed upstream of the NOx treating catalyst with respect to flow of exhaust gas from the combustion device and arranged to increase a ratio of hydrogen to total reducing components in at least one of combustion gas and exhaust gas so as to meet relations represented by following formulae (1) and (2), when reduction of NOx is carried out by the NOx treating catalyst:

            [H2 / TR]d > [H2 / TR]u     (1)



            [H2 / TR]d ≥ 0.3     (2)

    where [H2 / TR]u is a ratio between a concentration [H2]u of hydrogen and a concentration [TR]u of total reducing components in at least one of exhaust gas in the exhaust gas passageway upstream of the hydrogen enriching device and combustion gas in a state before undergoing the hydrogen ratio increasing by the hydrogen enriching means; and [H2 / TR]d is a ratio between a concentration [H2]d of hydrogen and a concentration [TR]d of total reducing components in exhaust gas in the exhaust gas passageway upstream of the NOx treating catalyst and downstream of the hydrogen enriching device.

    摘要翻译： 用于汽车内燃机的排气净化系统包括用于还原布置在燃烧装置的排气通道中的NOx的NOx处理催化剂，以在排气中的还原成分存在的情况下还原NOx。 另外，关于来自燃烧装置的排气的流动，在NO x处理催化剂的上游设置富氢装置，并且设置成增加燃烧气体和排气中的至少一个中的氢与全部还原成分的比率，以便 （1）和（2）表示的关系，当由NO x处理催化剂进行NO x还原时：[H 2 / TR] d（1）[H 2 / TR] 0.3 ...（2）其中[H2 / TR] u是氢气浓度[H2] u与氢气上游排气通道中至少一个排气中总还原组分的浓度[TR] u之间的比率 使富氢装置和燃烧气体处于氢比率增加之前的状态; [H 2 / TR] d是氢处理浓度[H 2] d与NOx处理催化剂上游废气通道中排气中总还原成分浓度[TR] d之间的比率， 设备。