Method and device for controlling an exhaust gas aftertreatment system
    1.
    发明授权
    Method and device for controlling an exhaust gas aftertreatment system 失效
    排气后处理系统的控制方法和装置

    公开(公告)号:US06769246B2

    公开(公告)日:2004-08-03

    申请号:US10181070

    申请日:2002-10-11

    IPC分类号: F01N300

    摘要: A method and a device are provided for controlling an exhaust gas aftertreatment system, for example, an exhaust gas aftertreatment system of an internal combustion engine. A first quantity characterizing the amount of substances supplied to the exhaust gas aftertreatment system, based on first characteristic operating quantities, is determined in a first operating state. A second quantity characterizing the amount of substances removed from the exhaust gas aftertreatment system, based on second characteristic operating quantities, is determined in a second operating state. The first quantity and the second quantity are then compared for error detection.

    摘要翻译: 提供了一种用于控制排气后处理系统(例如内燃机的废气后处理系统)的方法和装置。 在第一操作状态下,确定基于第一特征操作量表征供给到排气后处理系统的物质的量的第一数量。 在第二操作状态下确定表征从排气后处理系统中去除的物质量的第二数量,基于第二特征操作量。 然后比较第一数量和第二数量以进行错误检测。

    Device for measuring the pressure in a gas mixture
    3.
    发明申请
    Device for measuring the pressure in a gas mixture 有权
    用于测量气体混合物中的压力的​​装置

    公开(公告)号:US20070144904A1

    公开(公告)日:2007-06-28

    申请号:US10578339

    申请日:2004-11-08

    IPC分类号: G01N27/26

    CPC分类号: G01N27/407 G01L13/06

    摘要: A device for measuring the pressure of a gas mixture composed of gas components has an amperometric sensor that works on the limiting current principle, having two electrodes connected to a direct voltage that are situated on a solid electrolyte, of which one electrode is covered by a diffusion barrier, and a measuring element for measuring the limiting current flowing via electrodes as a measure for the gas pressure. For the purpose of error-free measurement of the gas pressure in a gas mixture in which the concentration of the gas components fluctuates with time, means are provided which fix the mole fraction of a gas component, drawn upon for pressure measurement, that is present upstream of the diffusion barrier at a constant 100%, at least during the pressure measuring phase. In one preferred exemplary embodiment, these means include a storage volume that is adjacent to the diffusion barrier which is separated from the gas mixture by a diffusion path, and two electrodes, situated on the solid electrolyte, for pumping of the gas component into the storage volume.

    摘要翻译: 用于测量由气体组分组成的气体混合物的压力的装置具有工作在极限电流原理上的电流传感器,其具有连接到位于固体电解质上的直流电压的两个电极,其中一个电极被 扩散阻挡层,以及用于测量流过电极的极限电流作为气体压力的量度的测量元件。 为了无差错地测量其中气体组分的浓度随时间变化的气体混合物中的气体压力,提供固定用于压力测量的气体组分的摩尔分数的装置 至少在压力测量阶段,扩散阻挡层的上游位于恒定的100%。 在一个优选的示例性实施例中,这些装置包括与通过扩散路径与气体混合物分离的扩散阻挡层相邻的存储体积,以及位于固体电解质上的两个电极,用于将气体组分泵入储存器 卷。

    Device for measuring the pressure in a gas mixture
    4.
    发明授权
    Device for measuring the pressure in a gas mixture 有权
    用于测量气体混合物中的压力的​​装置

    公开(公告)号:US07922884B2

    公开(公告)日:2011-04-12

    申请号:US10578339

    申请日:2004-11-08

    IPC分类号: G01N27/41

    CPC分类号: G01N27/407 G01L13/06

    摘要: A device for measuring the pressure of a gas mixture composed of gas components has an amperometric sensor that works on the limiting current principle, having two electrodes connected to a direct voltage that are situated on a solid electrolyte, of which one electrode is covered by a diffusion barrier, and a measuring element for measuring the limiting current flowing via electrodes as a measure for the gas pressure. For the purpose of error-free measurement of the gas pressure in a gas mixture in which the concentration of the gas components fluctuates with time, means are provided which fix the mole fraction of a gas component, drawn upon for pressure measurement, that is present upstream of the diffusion barrier at a constant 100%, at least during the pressure measuring phase. In one preferred exemplary embodiment, these means include a storage volume that is adjacent to the diffusion barrier which is separated from the gas mixture by a diffusion path, and two electrodes, situated on the solid electrolyte, for pumping of the gas component into the storage volume.

    摘要翻译: 用于测量由气体组分组成的气体混合物的压力的装置具有工作在极限电流原理上的电流传感器,其具有连接到位于固体电解质上的直流电压的两个电极,其中一个电极被 扩散阻挡层,以及用于测量流过电极的极限电流作为气体压力的量度的测量元件。 为了无差错地测量其中气体组分的浓度随时间变化的气体混合物中的气体压力,提供固定用于压力测量的气体组分的摩尔分数的装置 至少在压力测量阶段,扩散阻挡层的上游位于恒定的100%。 在一个优选的示例性实施例中,这些装置包括与通过扩散路径与气体混合物分离的扩散阻挡层相邻的存储体积,以及位于固体电解质上的两个电极,用于将气体组分泵入储存器 卷。

    Electrochemical gas sensor
    7.
    发明授权
    Electrochemical gas sensor 失效
    电化学气体传感器

    公开(公告)号:US06645361B1

    公开(公告)日:2003-11-11

    申请号:US09936815

    申请日:2002-01-14

    IPC分类号: G01N27407

    CPC分类号: G01N27/417

    摘要: An electrochemical gas sensor for determining the concentration of gas components in a gas mixture, in particular for determining NOx and HC. The gas sensor includes a first measuring gas space which is connected to the measuring gas, and a second measuring gas space which is connected to the first measuring gas space by a connecting channel. Furthermore, a first electrode and a second electrode, arranged in the first measuring gas space, and at least one third electrode arranged in the second measuring gas space, and at least one fourth electrode are provided. The two measuring gas spaces are arranged in layer planes on top of one another and are separated from one another by at least one oxygen ion conducting layer, the connecting channel passing through the oxygen ion conducting layer.

    摘要翻译: 一种电化学气体传感器,用于确定气体混合物中气体组分的浓度,特别是用于确定NOx和HC。 气体传感器包括连接到测量气体的第一测量气体空间和通过连接通道连接到第一测量气体空间的第二测量气体空间。 此外,设置有布置在第一测量气体空间中的第一电极和第二电极以及布置在第二测量气体空间中的至少一个第三电极和至少一个第四电极。 两个测量气体空间在彼此顶部的层平面中排列,并且通过至少一个氧离子传导层彼此分离,连接通道穿过氧离子传导层。

    Sensor for analyzing gases
    10.
    发明授权
    Sensor for analyzing gases 失效
    用于分析气体的传感器

    公开(公告)号:US06544394B1

    公开(公告)日:2003-04-08

    申请号:US09646661

    申请日:2000-11-30

    IPC分类号: G01N27407

    CPC分类号: G01N27/419

    摘要: A sensor for determining gas components and concentrations in a gas mixture that is particularly suitable for analyzing HC, NOx and CO in exhaust gases of internal combustion engines in the sensor, an outer electrode, that is separated from an MOx electrode by an electrolyte layer, is applied on a substrate. In this context, the outer electrode and the MOx electrode are in communication with the gas mixture to be analyzed. In addition, the outer electrode contains a region that is in contact with a gas-permeable tunnel layer which in turn contains a region that is directly exposed to the gas mixture to be analyzed, so that the gas to be analyzed can be supplied to the outer electrode via the gas-permeable tunnel layer.

    摘要翻译: 一种用于确定气体混合物中的气体成分和浓度的传感器,其特别适用于分析传感器内燃机废气中的HC,NOx和CO,通过电解质层与MOx电极分离的外部电极, 施加在基板上。 在本文中,外电极和MOx电极与待分析的气体混合物连通。 此外,外电极包含与透气隧道层接触的区域,该区域又包含直接暴露于要分析的气体混合物的区域,从而可将待分析的气体供应到 外部电极经由透气性隧道层。