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    Exhaust purification system for internal combustion engine
    3.
    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

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

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

    IPC分类号： F01N3/00 ,  F01N3/20 ,  F01N3/10 ,  F01N3/22 ,  F02D41/02 ,  F02D41/14 ,  F01N13/00 ,  F01N3/30 ,  F02D41/12 ,  F01N3/08 ,  F01N11/00

    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。

    Method for Checking a Catalytic Converter Oxygen Storage Reservoir for Sufficient Storage Capacity
    7.
    发明申请
    Method for Checking a Catalytic Converter Oxygen Storage Reservoir for Sufficient Storage Capacity 有权
    检查催化转化器储氧库储存容量的方法

    公开(公告)号：US20110056279A1

    公开(公告)日：2011-03-10

    申请号：US12556752

    申请日：2009-09-10

    申请人： Bodo Odendall

    发明人： Bodo Odendall

    IPC分类号： G01M15/10

    CPC分类号： F01N11/007 ,  F01N3/0864 ,  F01N2550/03 ,  F01N2570/16 ,  F01N2900/1624 ,  F02D41/1495 ,  Y02T10/20 ,  Y02T10/47

    摘要： Four cases are to be distinguished from one another for an exhaust gas line of a motor vehicle with an oxygen storage reservoir and a lambda probe located downstream from at least part of the oxygen storage reservoir, specifically in each case, whether or not the oxygen storage reservoir has sufficient storage capacity and whether or not the lambda probe is fully serviceable. For this purpose, the exhaust gas line is supplied in an alternating sequence with rich and lean exhaust gas, in two different passes the degree of oxygen filling being varied differently. For a minor variation of the degree of oxygen filling, the serviceability of the lambda probe can be deduced on the basis of certain criteria. If the lambda probe is fully serviceable, the sufficiency or insufficiency of the oxygen storage capacity of the oxygen storage reservoir can be deduced for a greater variation of the degree of oxygen filling.

    摘要翻译： 对于具有氧存储容器的机动车辆的排气管线和位于氧储存库的至少一部分的下游的λ探针，特别地在每种情况下，是否存储氧气存储器 储存器具有足够的存储容量以及λ探针是否完全可用。 为此，排气管线以交替排列的方式供应富含贫气的废气，在两个不同的通道中，氧气填充程度不同。 对于氧气填充程度的微小变化，可以基于某些标准来推导λ探针的适用性。 如果λ探针完全可以使用，则可以推断氧气储存器的储氧能力的充足或不充分，以使氧气填充程度的变化更大。

    METHOD AND DEVICE FOR REGULATING THE FUEL/AIR RATIO OF A COMBUSTION PROCESS
    8.
    发明申请
    METHOD AND DEVICE FOR REGULATING THE FUEL/AIR RATIO OF A COMBUSTION PROCESS 有权
    用于调节燃烧过程的燃料/空气比的方法和装置

    公开(公告)号：US20100212291A1

    公开(公告)日：2010-08-26

    申请号：US12647717

    申请日：2009-12-28

    申请人： Eberhard SCHNAIBEL ,  Kersten Wehmeier ,  Klaus Hirschmann ,  Richard Hotzel

    发明人： Eberhard SCHNAIBEL ,  Kersten Wehmeier ,  Klaus Hirschmann ,  Richard Hotzel

    IPC分类号： F02D41/00 ,  F01N9/00

    CPC分类号： F02D41/0295 ,  F01N13/009 ,  F01N13/0097 ,  F01N2430/06 ,  F01N2570/16 ,  F02D41/1441 ,  F02D41/1454 ,  F02D2041/1418 ,  F02D2041/1422 ,  F02D2250/36

    摘要： A method for regulating the fuel/air ratio of a combustion process which is operated alternatingly with excess air and air deficiency, and having at least one catalyst volume in the exhaust gas of the combustion process which stores oxygen when there is excess oxygen in the exhaust gas and gives it off when there is oxygen deficiency, in which method the oxygen charges into the catalyst volume taking place when there is excess air, and the oxygen discharges from the catalyst volume taking place when there is air deficiency determined, and in which the fuel/air ratio is regulated in a first control loop such that the sum of the oxygen charges and oxygen discharges determined in a predefined interval takes on a predetermined value, wherein the combustion process is operated using oxygen excess or oxygen deficiency, respectively, at least until these appear at an oxygen-sensitive Nernst probe downstream from the catalyst volume.

    摘要翻译： 一种用于调节燃烧过程的燃料/空气比的方法，所述燃烧过程与过量的空气和空气不足交替地操作，并且在排气中存在过多的氧气时存储氧气的燃烧过程的废气中具有至少一个催化剂体积 气体，当有氧缺乏时将其释放出来，在这种方法中，当存在空气过剩时，氧气进入催化剂体积，当确定空气不足时，氧气从催化剂体积排出，其中 在第一控制回路中调节燃料/空气比，使得在预定间隔中确定的氧气和氧气排出的总和达到预定值，其中燃烧过程分别使用氧气过量或氧气缺乏运行 直到这些出现在催化剂体积下游的氧敏敏恩斯特探针。

    Method and Device for Diagnosis of an Exhaust Gas Cleaning System
    10.
    发明申请
    Method and Device for Diagnosis of an Exhaust Gas Cleaning System 有权
    排气净化系统诊断方法和装置

    公开(公告)号：US20080105031A1

    公开(公告)日：2008-05-08

    申请号：US11666003

    申请日：2006-07-20

    申请人： Tino Arlt ,  Krzysztof Korbel ,  Gerd Rosel

    发明人： Tino Arlt ,  Krzysztof Korbel ,  Gerd Rosel

    IPC分类号： G01N7/02

    CPC分类号： F01N11/007 ,  F01N3/0814 ,  F01N3/0864 ,  F01N3/0871 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/011 ,  F01N13/107 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/025 ,  F01N2560/14 ,  F01N2570/16 ,  F02D41/1443 ,  Y02T10/22 ,  Y02T10/47

    摘要： The invention is distinguished by a method and a corresponding device for diagnosis of an individual catalytic converter of an exhaust gas purification unit assigned to an internal combustion engine in the Y configuration, despite the lack of exhaust gas probe between the individual catalytic converter and a main catalytic converter. The diagnosis proceeds on the basis of signals from the exhaust gas probes belonging to the exhaust gas purification unit. On the basis of these signals, the oxygen storage capacity of the individual catalytic converter is determined despite the lack of exhaust gas probe between the individual catalytic converter and the main catalytic converter.

    摘要翻译： 本发明的特征在于用于诊断分配给Y型结构的内燃机的排气净化单元的单个催化转化器的方法和相应装置，尽管在单个催化转化器和主催化转化器之间缺乏排气探针 催化转化器。 基于属于排气净化单元的废气探测器的信号进行诊断。 基于这些信号，尽管各个催化转化器和主催化转化器之间缺乏排气探针，但确定了各个催化转化器的储氧能力。