Gas sensor, especially a lambda probe
    1.
    发明授权
    Gas sensor, especially a lambda probe 有权
    气体传感器,特别是λ探头

    公开(公告)号:US06746585B2

    公开(公告)日:2004-06-08

    申请号:US10110906

    申请日:2002-07-25

    IPC分类号: G01N27409

    CPC分类号: G01N27/4071

    摘要: A gas sensor has improved electrical properties. In the top view of the layer planes of the body of the sensor, printed circuit traces for electrodes are arranged outside of cavities in the body, e.g., outside of the reference air duct. Furthermore, the electrodes are enlarged in the direction of the exhaust-side end of the sensor. Also, the printed circuit traces have an increased layer thickness or are formed as a double layer.

    摘要翻译: 气体传感器具有改善的电气性能。 在传感器主体的层平面的俯视图中,用于电极的印刷电路迹线布置在主体中的空腔的外部,例如在参考空气管道的外部。 此外,电极沿传感器的排气侧端部的方向扩大。 此外,印刷电路迹线具有增加的层厚度或者形成为双层。

    Sensor element for a sensor
    3.
    发明申请
    Sensor element for a sensor 审中-公开
    用于传感器的传感器元件

    公开(公告)号:US20070125648A1

    公开(公告)日:2007-06-07

    申请号:US10571869

    申请日:2004-09-30

    IPC分类号: G01N27/26

    CPC分类号: G01N27/419

    摘要: A sensor element for a sensor for determining the concentration of a gas component in a gas mixture, in particular the oxygen concentration in the exhaust gas of internal combustion engines, has two electrodes which, together with a solid electrolyte, form a pump cell, and one of these electrodes is exposed to the gas mixture via a porous protective layer. The sensor element also has a reference electrode which is situated on the solid electrolyte and is exposed to a reference gas. One of the two electrodes, with a reference electrode and the solid electrolyte, forms a concentration cell or a Nernst cell. To make the measured values produced by the sensor element insensitive to pressure fluctuations in the gas mixture, the electrode surface of the second electrode facing away from the solid electrolyte is coated with a finely porous diffusion layer, which is directly exposed to the gas mixture, and the second electrode is used as the reference electrode of the Nernst cell. It is also provided that the porous protective layer may be configured as a coarsely porous diffusion layer, and either of the two electrodes may be used as a reference electrode of the Nernst cell.

    摘要翻译: 用于确定气体混合物中的气体组分的浓度的传感器的传感器元件,特别是内燃机的废气中的氧气浓度,具有两个与固体电解质一起形成泵浦电池的电极, 这些电极中的一个通过多孔保护层暴露于气体混合物。 传感器元件还具有参考电极,该参考电极位于固体电解质上并暴露于参考气体。 具有参考电极和固体电解质的两个电极中的一个形成浓缩电池或能斯特电池。 为了使由传感器元件产生的测量值对气体混合物中的压力波动不敏感,第二电极的背离固体电解质的电极表面涂覆有直接暴露于气体混合物的细孔扩散层, 并且第二电极用作能斯特电池的参考电极。 还可以将多孔保护层构成为粗大孔扩散层,并且两电极中的任一个可以用作能斯特电池的参比电极。

    Electrochemical sensor
    4.
    发明授权
    Electrochemical sensor 有权
    电化学传感器

    公开(公告)号:US06280605B1

    公开(公告)日:2001-08-28

    申请号:US09220433

    申请日:1998-12-24

    IPC分类号: G01N27407

    CPC分类号: G01N27/417

    摘要: An electrochemical sensor measures a gas concentration of a measured gas with an electrochemical element. The electrochemical sensor includes an electrochemical pump cell with a first solid electrolyte body, a first and a second electrode, and a gas chamber, which is connected to a measured gas chamber via a gas inlet opening and in which one of the two electrodes is located. The electrochemical sensor also includes a second solid electrolyte body with an electrochemical sensor cell (e.g., a Nernst cell), which has a third electrode and a reference gas chamber in which a fourth electrode is located, with the electrodes having a supply conductor for electrical contacting. A supply conductor of the fourth electrode is provided with an electrically insulating layer to insulate it against the second solid electrolyte body.

    摘要翻译: 电化学传感器用电化学元件测量测量气体的气体浓度。 电化学传感器包括具有第一固体电解质体,第一和第二电极以及气体室的电化学泵电池,其经由气体入口开口连接到测量的气体室,并且两个电极中的一个位于 。 电化学传感器还包括具有电化学传感器单元(例如能斯特电池)的第二固体电解质体,其具有第四电极和第二电极,第三电极和参考气体室具有第四电极,电极具有用于电气的供电导体 联系。 第四电极的供电导体设置有电绝缘层,以将其与第二固体电解质体绝缘。

    Measurement sensor for determining an oxygen concentration in a gas mixture
    5.
    发明授权
    Measurement sensor for determining an oxygen concentration in a gas mixture 失效
    用于测定气体混合物中的氧浓度的测量传感器

    公开(公告)号:US06818111B1

    公开(公告)日:2004-11-16

    申请号:US09554041

    申请日:2000-10-12

    IPC分类号: G01N27409

    CPC分类号: G01N27/4065

    摘要: A probe is described for determining an oxygen concentration in a gas mixture, in particular in the exhaust gas of internal combustion engines, having a Nernst measuring cell, which has a first electrode (Nernst electrode) which is exposed to the gas mixture to be measured via a diffusion barrier, a second electrode (reference electrode) which is exposed to a reference gas, and a solid electrolyte body arranged between the first and the second electrode, and having a pump cell, which has a first electrode (inner pump electrode) which is exposed to the gas mixture via the diffusion barrier, a second electrode (outer pump electrode) which is exposed to the gas mixture, and a solid electrolyte body arranged between the first and the second electrode. The Nernst electrode and the inner pump electrode are connected at least in some sections via a joint supply conductor to a circuit arrangement for controlling and evaluating the probe. A joint supply conductor resistor of the Nernst electrode and of the inner pump electrode is formed by a loaded voltage divider whose individual resistors are arranged so that the negative feedback of a Nernst voltage circuit and of a pump voltage circuit is optimized, in particular maximized.

    摘要翻译: 描述了一种用于确定气体混合物中的氧浓度的探针,特别是在具有能斯特测量池的内燃机的排气中的氧浓度,该能斯特测量池具有暴露于要测量的气体混合物的第一电极(能斯特电极) 通过扩散阻挡层,暴露于参考气体的第二电极(参考电极)和布置在第一和第二电极之间的固体电解质体,并且具有泵电池,其具有第一电极(内部泵电极) 其经由扩散阻挡层暴露于气体混合物,暴露于气体混合物的第二电极(外部泵电极)和布置在第一和第二电极之间的固体电解质体。 能斯特电极和内泵电极至少在某些部分经由接头供电导体连接到用于控制和评估探针的电路装置。 能斯特电极和内泵电极的联合供电导体电阻器由负载分压器形成,负载分压器的各个电阻器被布置成使得能斯特电压电路和泵浦电压电路的负反馈最优化,特别是最大化。

    Electrochemical sensor
    6.
    发明授权
    Electrochemical sensor 失效
    电化学传感器

    公开(公告)号:US06436277B2

    公开(公告)日:2002-08-20

    申请号:US09247737

    申请日:1999-02-09

    IPC分类号: G01N27407

    CPC分类号: G01N27/417

    摘要: An electrochemical sensor for ascertaining a gas concentration of a measuring gas includes an electrochemical element, including a first solid electrolyte body having an electrochemical pump cell and a first and a second electrode, and having a gas compartment which is connected via a gas access opening to the measuring-gas compartment, and in which one of the two electrodes is arranged. The electrochemical element further includes a second solid electrolyte body having an electrochemical sensor cell (Nernst cell) and a third and a fourth electrode. The surface of the first solid electrolyte body faces the measuring-gas compartment, and the gas access opening is covered by a porous protective layer. The electrochemical sensor includes a layer that exhibits a higher density or a lower porosity compared to the protective layer and that is allocated to the porous protective layer.

    摘要翻译: 用于确定测量气体的气体浓度的电化学传感器包括电化学元件,其包括具有电化学泵电池的第一固体电解质体和第一和第二电极,并且具有通过气体进入开口连接的气室, 测量气体室,并且其中布置两个电极中的一个。 电化学元件还包括具有电化学传感器单元(能斯特电池)和第三和第四电极的第二固体电解质体。 第一固体电解质体的表面面向测量气体隔室,并且气体进入口被多孔保护层覆盖。 电化学传感器包括与保护层相比表现出更高密度或更低孔隙率并分配给多孔保护层的层。

    Gas sensor
    7.
    发明授权
    Gas sensor 失效
    气体传感器

    公开(公告)号:US07404881B2

    公开(公告)日:2008-07-29

    申请号:US10706889

    申请日:2003-11-13

    IPC分类号: G01N27/41

    CPC分类号: G01N27/4071 Y10T29/49002

    摘要: A gas sensor is described for detecting a physical property of a measuring gas, including detecting the oxygen concentration in the measuring gas. The gas sensor includes a sensor element having a diffusion barrier, which is arranged between a first solid electrolyte layer and a second solid electrolyte layer. The diffusion barrier has a necked-down portion, i.e., a concave profile, between the first and the second solid electrolyte layer. Accordingly, a first area, which the diffusion barrier occupies in a plane which lies between the side of the first solid electrolyte layer (facing the diffusion barrier) and the side of the second solid electrolyte layer (facing the diffusion barrier), is smaller than a second area on which the diffusion barrier covers the first or the second solid electrolyte. In order to manufacture the sensor element, a first layer made of a paste containing a pore-forming material is applied onto a blank foil, and after that, a second layer made of a paste containing a pore-forming material is applied.

    摘要翻译: 描述了用于检测测量气体的物理性质的气体传感器,包括检测测量气体中的氧浓度。 气体传感器包括具有扩散阻挡层的传感器元件,其布置在第一固体电解质层和第二固体电解质层之间。 扩散阻挡层在第一和第二固体电解质层之间具有缩小部分,即凹形轮廓。 因此,位于第一固体电解质层的一侧(面向扩散阻挡层)的一侧的平面和第二固体电解质层(面向扩散阻挡层)的一侧的扩散阻挡层的第一区域小于 扩散阻挡层覆盖第一或第二固体电解质的第二区域。 为了制造传感器元件,将由含有成孔材料的糊料制成的第一层施加到空白箔上,然后施加由含有成孔材料的糊料制成的第二层。

    Electrochemical sensor
    8.
    发明授权
    Electrochemical sensor 失效
    电化学传感器

    公开(公告)号:US06270639B1

    公开(公告)日:2001-08-07

    申请号:US09239291

    申请日:1999-01-29

    IPC分类号: G01N27409

    CPC分类号: G01N27/417

    摘要: An electrochemical sensor determining a gas concentration of the measuring gas. The sensor has an electrochemical element including a first solid electrolyte body having an electrochemical pump cell and a first (external pump) and a second (internal pump) electrode and having a gas chamber which is connected to the measuring gas chamber via a gas supply opening and in which the second electrode is arranged. The electrochemical element also includes a second solid electrolyte body having an electrochemical sensor cell (e.g., a Nernst cell) and a third and fourth electrode, each electrode having a lead for the electrical contacting. The leads of the first and second electrodes are decoupled capacitively from the lead of at least the fourth electrode by a device.

    摘要翻译: 确定测量气体的气体浓度的电化学传感器。 传感器具有电化学元件,其包括具有电化学泵电池的第一固体电解质体和第一(外部泵)和第二(内部泵)电极,并且具有通过气体供给开口连接到测量气体室的气体室 并且其中布置有第二电极。 电化学元件还包括具有电化学传感器单元(例如能斯特电池)和第三和第四电极的第二固体电解质体,每个电极具有用于电接触的引线。 第一和第二电极的引线通过器件从至少第四电极的引线电容性地去耦合。

    Sensor for determining gas constituents and/or gas concentrations of gas
mixtures
    9.
    发明授权
    Sensor for determining gas constituents and/or gas concentrations of gas mixtures 失效
    用于确定气体组分和/或气体混合物气体浓度的传感器

    公开(公告)号:US5460711A

    公开(公告)日:1995-10-24

    申请号:US169351

    申请日:1993-12-20

    CPC分类号: G01N27/419 G01N27/4074

    摘要: A sensor for determining at least one of gas constituents and gas concentrations in a gas mixture, such as CO, NO.sub.x and HC, in exhaust gas from an internal combustion engine, includes a semiconductor gas sensor having a gas sensitive region in communication with the gas mixture; a pumping cell including a solid electrolyte carrier and pumping electrodes disposed on the solid electrolyte carrier, the pumping cell being positioned in communication with the semiconductor gas sensor for effecting oxygen transfer to the semiconductor gas sensor on the side thereof opposite the gas mixture by pumping oxygen thereto to provide an O.sub.2 mole current density in the gas sensitive region, and the pumping cell having a pumping current; a cover layer which is gas tight and which has a restricted opening defined therein provided on the pumping cell on the side thereof which communicates with the semiconductor gas sensor so that the oxygen is pumped through the restricted opening to the semiconductor gas sensor, whereby the O.sub.2 mole current density in the gas sensitive region can be increased within the restricted opening while the pumping current remains constant, the gas sensitive region of the semiconductor gas sensor being disposed in the restricted opening so that an oxygen excess is established at the gas sensitive region due to the O.sub.2 mole current density.

    摘要翻译: 用于确定来自内燃机的废气中的气体混合物(例如CO,NOx和HC)中的气体成分和气体浓度中的至少一种的传感器包括具有与气体连通的气体敏感区域的半导体气体传感器 混合物; 泵送电池,其包括固体电解质载体和设置在固体电解质载体上的泵送电极,所述泵浦单元定位成与半导体气体传感器连通,以通过泵送氧来实现氧气传输到与气体混合物相对的一侧上的半导体气体传感器 以在气体敏感区域中提供O2摩尔电流密度,并且泵浦单元具有泵送电流; 覆盖层是气密的并且具有限定的开口,其设置在其与半导体气体传感器连通的一侧上的泵送单元上,使得氧被泵浦通过限制开口到半导体气体传感器,由此O2 气体敏感区域中的摩尔电流密度可以在限制开口内增加,同时泵浦电流保持恒定,半导体气体传感器的气体敏感区域设置在限制开口中,使得在气体敏感区域处建立氧气过量 到O2摩尔电流密度。

    Method and arrangement for analyzing exhaust gas from an internal combustion engine
    10.
    发明授权
    Method and arrangement for analyzing exhaust gas from an internal combustion engine 失效
    用于分析来自内燃机的废气的方法和装置

    公开(公告)号:US06192738B1

    公开(公告)日:2001-02-27

    申请号:US09244933

    申请日:1999-02-04

    IPC分类号: G01N700

    CPC分类号: G01N33/0013

    摘要: In order to provide a method and arrangement for analytical determination of the relative amounts of exhaust gas components, except for water, but including hydrogen in the rich range or oxygen in the lean range, and for determining a &lgr; value, in which the exhaust gas sample can be taken at any arbitrary location, an arrangement is provided in which at least one portion of the exhaust gas is passed through a catalytic reactor (2, 22), a condenser (3,23) connected to the catalytic reactor to receive the gas passed through it, and, after passing through the condenser, the gas passes through an IR spectrometer and by a &lgr;-sensor. The oxidizable and reducible components of the exhaust gas are reacted with each other in the catalytic reactor which is heated to temperatures greater than 450° C. The relative amounts of CO2, hydrocarbons and, if present, CO are measured with the IR spectrometer and either the relative amount of hydrogen in the rich range or of O2+½ NO in the lean range is determined with the help of the signal (Ip) from the &lgr;-sensor. A &lgr; value is calculated from the measured exhaust gas component concentrations or relative amounts.

    摘要翻译: 为了提供除了水以外的排气组分的相对量的分析确定方法和装置,但是包括富含范围内的氢或贫浓范围的氧,并且用于确定l值,其中废气 可以在任何任意位置取样,其中提供排气的至少一部分通过催化反应器(2,22)的排列,连接到催化反应器的冷凝器(3,23),以接收 气体通过它,并且在通过冷凝器之后,气体通过IR光谱仪和羔羊传感器。 废气中的可氧化和可还原的组分在催化反应器中彼此反应,催化反应器被加热至高于450℃。如果使用红外光谱仪测量CO 2,烃和CO(如果存在的话)的相对量, 借助于来自羔羊传感器的信号(Ip)来确定浓范围中的氢的相对量或在稀疏范围内的O2 +½NO的相对量。 从测量的废气组分浓度或相对量计算羔羊值。