EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE (AS AMENDED)
    1.
    发明申请
    EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE (AS AMENDED) 有权
    内燃机排气净化系统(已修改)

    公开(公告)号:US20140216013A1

    公开(公告)日:2014-08-07

    申请号:US14232694

    申请日:2011-12-16

    IPC分类号: F01N3/20 F01N3/30

    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。

    EXHAUST PURIFICATION SYSTEM
    4.
    发明申请
    EXHAUST PURIFICATION SYSTEM 审中-公开
    排气净化系统

    公开(公告)号:US20140305105A1

    公开(公告)日:2014-10-16

    申请号:US14317740

    申请日:2014-06-27

    IPC分类号: F01N3/20

    摘要: An exhaust gas purification system provided with an NOX purification catalyst reducing the amount of use of precious metals and/or able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere and having an NOX purification performance even for an exhaust gas composition containing hydrocarbons and oxygen together with a low temperature and/or oxidizing atmosphere, that is, an exhaust gas purification system provided with an NOX purification catalyst provided in an exhaust gas passage and comprised of carrier particles on which nanoparticles in which gold atoms and nickel atoms are included in a state in close proximity are carried and an oxidation catalyst oxidizing hydrocarbons in exhaust gas at a position at an upstream side of the NOX purification catalyst.

    摘要翻译: 一种排气净化系统,其具有减少贵金属使用量和/或能够在低温和/或氧化气氛中显示NO x净化性能的NO x净化催化剂,并且具有即使对于排气的NO x净化性能 含有碳氢化合物和氧气以及低温和/或氧化气氛的气体组合物,即在废气通道中提供的具有NO x净化催化剂的废气净化系统,其中载体颗粒上含有金原子和 镍原子被包含在非常接近的状态,氧化催化剂在NOX净化催化剂的上游侧的位置处对废气中的烃进行氧化。

    EXHAUST EMISSION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE
    6.
    发明申请
    EXHAUST EMISSION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE 审中-公开
    用于内燃机的排气控制装置

    公开(公告)号:US20100313552A1

    公开(公告)日:2010-12-16

    申请号:US12521380

    申请日:2007-12-20

    IPC分类号: F01N9/00 F01N3/10 F01N3/035

    摘要: An exhaust emission control apparatus that is used with an internal combustion engine to use both a NOx retention member and a catalyst while avoiding a decrease in the exhaust gas purification capacity. A NOx occlusion reduction type catalyst is placed in an exhaust path of an internal combustion engine. The NOx occlusion reduction type catalyst includes a base material. The base material includes an exhaust inflow cell, which is closed at its downstream side; and an exhaust outflow cell, which is closed at its upstream side and is adjacent to the first cell with the partition wall positioned in between. The exhaust inflow cell is configured so that a NOx retention layer is formed on the inner surface thereof, and the exhaust outflow cell is configured so that a catalyst layer is formed on the inner surface thereof, respectively.

    摘要翻译: 一种废气排放控制装置,其与内燃机一起使用以同时使用NOx保持构件和催化剂,同时避免排气净化能力的降低。 将NOx吸留还原型催化剂置于内燃机的排气路径中。 NOx吸留还原型催化剂包括基材。 基材包括在其下游侧封闭的排气流入池; 以及排气流出室,其在其上游侧封闭并且与分隔壁位于其间的第一单元相邻。 排气入流单元被构造成在其内表面上形成NOx保持层,并且排气流出单元被分别构造成在其内表面上形成催化剂层。

    Exhaust purification system for internal combustion engine
    7.
    发明授权
    Exhaust purification system for internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号:US09297288B2

    公开(公告)日:2016-03-29

    申请号:US14232694

    申请日:2011-12-16

    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。