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    • 4. 发明申请
    • Sensor element
    • 传感器元件
    • US20070000779A1
    • 2007-01-04
    • US10574058
    • 2004-09-29
    • Berndt CramerBernd SchumannJorg Ziegler
    • Berndt CramerBernd SchumannJorg Ziegler
    • G01N27/26
    • G01N27/419
    • A sensor element is described, which is used in particular for detecting a physical property of a measuring gas, preferably for determining the oxygen partial pressure in an exhaust gas of an internal combustion engine. The sensor element contains at least one electrochemical measuring cell, which includes a first electrode and a second electrode, which are electrically connected by a solid electrolyte. The second electrode is in a gas chamber, which is connected to the measuring gas located outside the sensor element via a first element having a catalytically active material and a second diffusion-limiting element. The first element has a length of at least 1 mm in the diffusion direction of the measuring gas.
    • 描述了一种传感器元件,其特别用于检测测量气体的物理性能,优选用于确定内燃机的排气中的氧分压。 传感器元件包含至少一个电化学测量单元,其包括通过固体电解质电连接的第一电极和第二电极。 第二电极位于气体室中,其经由具有催化活性材料的第一元件和第二扩散限制元件连接到位于传感器元件外部的测量气体。 第一元件在测量气体的扩散方向上具有至少1mm的长度。
    • 5. 发明授权
    • Method and device for detecting the concentration of an oxygen-containing compound in an analyte gas
    • 用于检测分析气体中含氧化合物浓度的方法和装置
    • US07073369B2
    • 2006-07-11
    • US10473357
    • 2002-02-27
    • Berndt CramerBernd Schumann
    • Berndt CramerBernd Schumann
    • G01N7/00G01N27/25
    • G01N27/4111
    • A method and an arrangement for determining the concentration of an oxygen-containing compound in a test gas in an external volume are presented with the external volume containing also additional oxygen. The method utilizes a sensor having a first cavity which is connected to the external volume via a first diffusion barrier and a second cavity which is connected to the first cavity via a further diffusion barrier. In addition, means for reducing the oxygen concentration in the first cavity and means for detecting the concentration of oxygen in the second cavity are provided. The reduction of the oxygen concentration in the first cavity takes place in a first phase to a value at which a change of the concentration of the oxygen-containing compound does not occur. In a second phase, a further reduction takes place in the first chamber to a value at which also a reduction of the concentration of the first oxygen-containing compound occurs. An index for the sought-after concentration is formed as the difference of the oxygen concentrations detected in the first and second phases in the second cavity.
    • 在外部体积中测定试验气体中的含氧化合物的浓度的方法和装置呈现还包含另外的氧的外部体积。 该方法利用具有第一空腔的传感器,该第一空腔经由第一扩散屏障连接到外部体积,第二空腔经由另一个扩散屏障连接到第一空腔。 此外,提供了用于降低第一腔中的氧浓度和用于检测第二腔中的氧浓度的装置。 第一腔中的氧浓度的降低在第一阶段发生到不发生含氧化合物的浓度变化的值。 在第二阶段中,在第一室中进一步还原成为第一含氧化合物的浓度降低的值。 所追求的浓度的指标形成为在第二腔中的第一和第二相中检测到的氧浓度的差异。