Sensor for determining gas components and/or gas concentrations of gas
mixtures
    1.
    发明授权
    Sensor for determining gas components 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:US5476001A

    公开(公告)日:1995-12-19

    申请号:US244660

    申请日:1994-06-06

    CPC分类号: G01N27/419

    摘要: A sensor for determining gas components and/or gas concentrations in gas mixtures, in particular in exhaust gases of internal combustion engines. The sensor has an oxygen pump cell and a measuring element having a sensitive region. Provided between the pump cell and the gas mixture is a diffusion path in which there are formed an oxygen gradient XO.sub.2 and a gradient X.sub.CO of the gas component to be determined, which extend respectively in opposite directions. The measuring element is positioned relative to the pump cell and the diffusion path in such a way that an excess of oxygen is present on the sensitive region of the measuring element.

    摘要翻译: PCT No.PCT / DE93 / 01164 Sec。 371日期:1994年6月6日 102(e)日期1994年6月6日PCT提交1993年12月7日PCT公布。 公开号WO94 / 15206 日期1997年7月7日。一种用于确定气体混合物,特别是内燃机废气中的气体成分和/或气体浓度的传感器。 传感器具有氧气泵电池和具有敏感区域的测量元件。 提供在泵电池和气体混合物之间的是扩散路径,其中形成分别沿相反方向延伸的要确定的气体成分的氧梯度XO2和梯度XCO。 测量元件相对于泵电池和扩散路径被定位成使得过量的氧存在于测量元件的敏感区域上。

    Sensor arrangement for determining gas components and/or gas
concentrations of gas mixtures
    2.
    发明授权
    Sensor arrangement for determining gas components 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装置

    公开(公告)号:US5505837A

    公开(公告)日:1996-04-09

    申请号:US290704

    申请日:1994-12-12

    CPC分类号: G01N27/419

    摘要: A sensor arrangement for determining at least one of gas components and gas concentrations of gas mixtures including CO, NO.sub.x and HC in exhaust gases of internal combustion engines, includes a measuring element which has a sensitive region; and a pump cell that includes a solid electrolyte and inner and outer pump electrodes which are opposingly disposed at least on the solid electrolyte and which effect an oxygen transfer to the measuring element, wherein the pump cell and the measuring element are spatially separated from one another, are located in different temperature zones during operation of the sensor arrangement, and are connected to one another by a diffusion segment through which oxygen can diffuse from the pump cell to the measuring element.

    摘要翻译: PCT No.PCT / DE94 / 00289 Sec。 371日期1994年12月12日第 102(e)日期1994年12月12日PCT 1994年3月17日PCT公布。 公开号WO94 / 24550 PCT 日期:1994年10月27日。一种用于确定内燃机废气中的CO,NO x和HC气体混合气体组分和气体浓度中的至少一种的传感器装置,包括具有敏感区域的测量元件; 以及泵电池,其包括固体电解质和内部和外部泵电极,所述内部和外部泵电极相对设置在至少在所述固体电解质上并且对所述测量元件进行氧传递,其中所述泵浦单元和所述测量元件在空间上彼此分离 位于传感器装置的操作期间的不同温度区域中,并且通过扩散段彼此连接,通过该扩散段,氧气可以从泵电池扩散到测量元件。

    Method for determining gas components and/or gas concentrations of gas
mixture
    3.
    发明授权
    Method for determining gas components and/or gas concentrations of gas mixture 失效
    气体混合物气体组分和/或气体浓度的测定方法

    公开(公告)号:US5595647A

    公开(公告)日:1997-01-21

    申请号:US290703

    申请日:1995-01-19

    CPC分类号: G01N27/407 G01N27/4074

    摘要: A method of determining at least one of gas constituents and gas concentrations of a gas mixture such as exhaust gas from an internal combustion engine includes producing a change in gas concentration of the gas mixture at a semiconductor gas sensor by pumping a variable supply of oxygen to the semiconductor gas sensor by means of a solid electrolyte pumping cell; detecting at least one reaction speed selected from the group consisting of adsorption speed and desorption speed caused by the change in gas concentration as a signal from the semiconductor gas sensor which is a reply function; evaluating the signal from the semiconductor gas sensor over time to provide a time response of the reply function; and comparing the time response of the reply function with a stored, standardized time response of different gas constituents whereby at least one of the gas constituents and the gas concentrations of the gas mixture are determined.

    摘要翻译: PCT No.PCT / DE94 / 00188 Sec。 371日期1995年1月19日 102(e)日期1995年1月19日PCT 1994年2月19日PCT PCT。 公开号WO94 / 22007 日期1994年9月29日一种确定气体混合物(例如来自内燃机的废气)的气体组分和气体浓度中的至少一种的方法包括通过泵送一个半导体气体传感器来产生气体混合物的气体浓度的变化 通过固体电解质泵送单元向半导体气体传感器供应氧气; 检测从由作为回复功能的半导体气体传感器的信号的气体浓度的变化引起的吸附速度和解吸速度中选择的至少一个反应速度; 评估来自半导体气体传感器的信号随时间提供回复功能的时间响应; 以及将回复函数的时间响应与不同气体成分的存储的,标准化的时间响应进行比较,由此确定气体混合物的气体成分和气体浓度中的至少一种。

    Method and arrangement for analyzing exhaust gas from an internal combustion engine
    4.
    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。

    Arrangement for detecting the oxygen content in the exhaust gas of an
internal combustion engine
    5.
    发明授权
    Arrangement for detecting the oxygen content in the exhaust gas of an internal combustion engine 失效
    用于检测内燃机的废气中的氧含量的装置

    公开(公告)号:US5549804A

    公开(公告)日:1996-08-27

    申请号:US315970

    申请日:1994-09-30

    CPC分类号: G01N27/4071 G01N27/4065

    摘要: The invention is directed to an arrangement for detecting the oxygen content in the exhaust gas of an internal combustion engine. The arrangement includes a concentration measuring cell operating pursuant to the Nernst principle. The concentration measuring cell has a measuring electrode, a solid electrolyte and a reference electrode and a series circuit which includes a direct voltage source and a series resistor. The series circuit connects the measuring electrode to the reference electrode. The measuring electrode communicates with the exhaust gas of the internal combustion engine and is connected to the reference electrode via the solid electrolyte. The reference electrode communicates with the reference gas volume. The reference gas volume is partitioned from the exhaust gas and from the ambient air so that a particle exchange between the reference gas volume and the exhaust gas as well as between the reference gas volume and the ambient air is at least made more difficult. The output voltage of the concentration measuring cell defines a measure for the difference of the oxygen concentrations in the exhaust gas of the engine and the reference gas volume. The output voltage of the direct voltage source and/or the value of the series resistance is so pregiven that an electric current Ip is always so directed that oxygen is transported from the exhaust gas to the reference gas volume independently of the output voltage of the concentration measuring cell. The current Ip flows in a current circuit including direct voltage source, series resistance and concentration measuring cell.

    摘要翻译: 本发明涉及一种用于检测内燃机排气中氧含量的装置。 该装置包括根据恩斯特原理运行的浓度测量池。 浓度测量单元具有测量电极,固体电解质和参考电极以及包括直流电压源和串联电阻器的串联电路。 串联电路将测量电极连接到参考电极。 测量电极与内燃机的废气连通,并通过固体电解质与参比电极连接。 参考电极与参考气体体积连通。 参考气体体积与废气和环境空气隔开,使得参考气体体积和废气之间以及参考气体体积和环境空气之间的颗粒交换至少变得更困难。 浓度测量池的输出电压定义了发动机废气中的氧气浓度与参考气体体积之差的量度。 直流电压源的输出电压和/或串联电阻的值被假定为电流Ip始终如此指示氧气从排气转移到参考气体体积,而与输出电压的浓度无关 测量池。 电流Ip在包括直流电压源,串联电阻和浓度测量单元的电流电路中流动。

    Electrochemical sensor for determining the oxygen content in gases
    6.
    发明授权
    Electrochemical sensor for determining the oxygen content in gases 失效
    用于测定气体中氧含量的电化学传感器

    公开(公告)号:US5496461A

    公开(公告)日:1996-03-05

    申请号:US316107

    申请日:1994-09-30

    CPC分类号: G01N27/4071 G01N27/419

    摘要: The invention relates to a measuring sensor having an internal pump oxygen reference atmosphere which, in turn, has a device for compensating pressure which is so dimensioned that, on the one hand, mechanical damage because of overpressure in the reference volume is reliably prevented and, on the other hand, external influences on the composition of the pumped measured gas atmosphere are substantially excluded. The device for compensating for pressure is so dimensioned according to the invention that the particle exchange between ambient air and gas to be measured is opposed by a resistance which is defined by the limit current principle.

    摘要翻译: 本发明涉及一种具有内部泵氧气参考气氛的测量传感器,该测量传感器又具有用于补偿压力的装置,其尺寸被确定为一方面可以可靠地防止由于参考体积中的过压引起的机械损坏, 另一方面,对所抽取的测量气体气氛的组成的外部影响基本上被排除。 根据本发明,用于补偿压力的装置的尺寸如此,即待测量的环境空气和气体之间的颗粒交换与由极限电流原理定义的电阻相反。

    Gas sensor and corresponding production method
    7.
    发明授权
    Gas sensor and corresponding production method 失效
    气体传感器及相应的生产方法

    公开(公告)号:US06395161B1

    公开(公告)日:2002-05-28

    申请号:US09509270

    申请日:2000-03-23

    IPC分类号: G01N27406

    摘要: A gas sensor and a method for its manufacture are described. The gas sensor has a solid electrolyte having at least one measuring electrode and one porous protective coating. The measuring electrode has an electrically conductive base layer and a further layer, the further layer god being deposited in the pores of the porous protective coating adjacent to the base layer via galvanic deposition. In order to deposit the further layer via galvanic deposition, the basic body, which has been fused with the base layer and the protective coating via vitrification, is immersed in a galvanizing bath, the base layer being connected as the cathode.

    摘要翻译: 描述了一种气体传感器及其制造方法。 气体传感器具有固体电解质,其具有至少一个测量电极和一个多孔保护涂层。 测量电极具有导电基底层和另一层,另外的层神经由电沉积沉积在与基底层相邻的多孔保护涂层的孔中。 为了通过电沉积沉积另外的层,已经通过玻璃化与基底层和保护涂层熔合的基体浸入镀锌浴中,基底层作为阴极连接。

    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。

    Electrochemical sensor
    10.
    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。