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    • 1. 发明授权
    • Method for determining gas components and/or gas concentrations of gas
mixture
    • 气体混合物气体组分和/或气体浓度的测定方法
    • US5595647A
    • 1997-01-21
    • US290703
    • 1995-01-19
    • Gerhard HoetzelHarald NeumannJohann Riegel
    • Gerhard HoetzelHarald NeumannJohann Riegel
    • G01N27/419G01N27/12G01N27/407G01N27/41
    • G01N27/407G01N27/4074
    • 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.
    • 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。
    • 4. 发明授权
    • Method and arrangement for analyzing exhaust gas from an internal combustion engine
    • 用于分析来自内燃机的废气的方法和装置
    • US06192738B1
    • 2001-02-27
    • US09244933
    • 1999-02-04
    • Roland StahlDietrich AdolphGerhard HoetzelJohann Riegel
    • Roland StahlDietrich AdolphGerhard HoetzelJohann Riegel
    • G01N700
    • G01N33/0013
    • 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.
    • 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。
    • 5. 发明授权
    • Arrangement for detecting the oxygen content in the exhaust gas of an
internal combustion engine
    • 用于检测内燃机的废气中的氧含量的装置
    • US5549804A
    • 1996-08-27
    • US315970
    • 1994-09-30
    • Gerhard HotzelHarald NeumannWalter StrassnerJohann Riegel
    • Gerhard HotzelHarald NeumannWalter StrassnerJohann Riegel
    • G01N27/419G01N27/406G01N27/407G01N27/409G01N27/26
    • G01N27/4071G01N27/4065
    • 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.
    • 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。
    • 8. 发明授权
    • Electrochemical sensor
    • 电化学传感器
    • US06270639B1
    • 2001-08-07
    • US09239291
    • 1999-01-29
    • Martin LenfersOlaf JachHarald NeumannWalter StrassnerJohann RiegelLothar Diehl
    • Martin LenfersOlaf JachHarald NeumannWalter StrassnerJohann RiegelLothar Diehl
    • G01N27409
    • G01N27/417
    • 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.
    • 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。
    • 10. 发明授权
    • Electrochemical sensor
    • 电化学传感器
    • US06436277B2
    • 2002-08-20
    • US09247737
    • 1999-02-09
    • Eberhard SchnaibelHarald NeumannJohann RiegelLothar Diehl
    • Eberhard SchnaibelHarald NeumannJohann RiegelLothar Diehl
    • G01N27407
    • G01N27/417
    • 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.
    • 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。