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公开(公告)号：US5391284A
公开(公告)日：1995-02-21
申请号：US198291
申请日：1994-02-18
申请人： Gerhard Hotzel
发明人： Gerhard Hotzel
IPC分类号： F02B77/08 , F02D35/00 , F02D41/14 , G01N27/406 , G01N27/419 , G01N27/26
CPC分类号： G01N27/419 , F02D41/1476 , G01N27/4065
摘要： An arrangement determines a voltage which indicates the lambda value of an air/fuel mixture supplied to a combustion engine generating exhaust gas during the operation thereof. The arrangement includes a two-cell oxygen probe mounted in the exhaust gas flow of the engine. The two-cell oxygen probe has an exhaust-gas space for the exhaust gas and an ambient-air space for ambient air. The oxygen probe has a pump cell having two electrodes and a sensing cell having two electrodes. A switchover stage outputs a voltage indicating the electric pump current through the pump cell when a control to the lambda value deviating from one is to be made and outputs that Nernst voltage which is taken off between the electrodes of the sensing cell facing into the ambient air and one of the remaining ones of the electrodes when a control to the lambda value one is to be made. For controlling to the lambda value one, the Nernst voltage supplies a significantly more precise signal than the voltage derived from the pump current.
摘要翻译： 一种布置确定了在其操作期间提供给产生废气的内燃机的空气/燃料混合物的λ值的电压。 该装置包括安装在发动机的废气流中的双电池氧探头。 双电池氧探头具有用于废气的废气空间和用于环境空气的环境空气空间。 氧探针具有具有两个电极的泵电池和具有两个电极的感测单元。 当要对λ值进行控制时，切换级输出指示电泵电流通过泵电池的电压，并输出在感应单元的电极面向环境空气之间取下的能斯特电压 并且当对λ值1进行控制时，剩余的电极中的一个电极。 为了控制λ值1，能斯特电压比从泵浦电流得到的电压提供明显更精确的信号。
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2.发明授权
公开(公告)号：US5494557A
公开(公告)日：1996-02-27
申请号：US316108
申请日：1994-09-30
IPC分类号： G01N27/41 , G01N27/406 , G01N27/407 , G01N27/409 , G01N27/419
CPC分类号： G01N27/4071 , G01N27/4065
摘要： The invention is directed to a method of operating an exhaust-gas probe having a pumped reference atmosphere in a relatively closed volume. In this method, the oxygen ion current, which carries the pump current Ip to the reference atmosphere, is temporarily increased under specific conditions. In this way, an adulteration of the reference atmosphere can be more rapidly eliminated. This adulteration can occur because of fuel particles which diffuse in.
摘要翻译： 本发明涉及一种在相对封闭的体积内操作具有抽吸基准气氛的排气探针的方法。 在这种方法中，在特定条件下，将泵浦电流Ip与参考气体携带的氧离子电流暂时增加。 这样就可以更加迅速地消除对参考气氛的掺假。 这种掺假可能因为扩散的燃料颗粒而发生。
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3.发明授权
公开(公告)号：US5549804A
公开(公告)日：1996-08-27
申请号：US315970
申请日：1994-09-30
IPC分类号： G01N27/419 , G01N27/406 , G01N27/407 , G01N27/409 , G01N27/26
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。
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公开(公告)号：US5524472A
公开(公告)日：1996-06-11
申请号：US363618
申请日：1994-12-23
申请人： Gerhard Hotzel
发明人： Gerhard Hotzel
IPC分类号： G01N27/41 , F02D41/14 , F02D41/24 , G01N27/417 , G01N27/416 , F01N9/00
CPC分类号： F02D41/2432 , F02D41/1494 , F02D41/2474 , G01N27/4175 , F02D41/2441 , F02D41/2454
摘要： The invention is directed to an evaluating arrangement 10 for the probe signal of a heated amperometric oxygen probe 11 which is mounted in the flow of the exhaust gas from an internal combustion engine 13. The heater unit 18 of the probe is continuously operated with such a heater voltage that the internal resistance of the prove remains constant. However, for this reason, an ever increasing probe temperature (that is, an however, leads to an unwanted increase of the probe signal and this increase must be compensated. For this compensation, the realization is utilized that the increase of the probe temperature is clearly connected to the increase of the heater voltage. The amount of the increase of the heater voltage is determined by comparison measurements in a calibration operating state of the engine. A corrective value is formed from the detected change of the heater voltage and is mathematically coupled to the measurement signal in order to obtain a corrected measurement signal which exhibits neither temperature-caused errors nor deterioration-caused errors.
摘要翻译： 本发明涉及一种用于安装在来自内燃机13的废气流中的加热电流计氧探头11的探针信号的评估装置10.探头的加热器单元18连续地运行， 加热器电压，证明的内阻保持恒定。 然而，由于这个原因，探头温度越来越高（也就是说，会导致探测信号的不必要的增加，这个增加必须被补偿，对于这个补偿，使用探针温度的增加的实现 与加热器电压的增加明显相关，加热器电压的增加量由发动机的校准运行状态下的比较测量确定，根据检测到的加热器电压的变化形成校正值，并在数学上耦合 以获得校正的测量信号，其不显示温度引起的误差或劣化引起的误差。
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公开(公告)号：US4710848A
公开(公告)日：1987-12-01
申请号：US898904
申请日：1986-08-21
IPC分类号： G01N27/406 , G01N7/10 , G01N27/407 , G01N27/416 , G01N31/00 , H01G7/00
CPC分类号： G01N27/4073
摘要： A solid state cell for measuring the activity of a component of a mixture using a solid ionic conductor, which is in contact on one side with a reference phase and on the other side with a phase sensitive to the gas component to be determined, is to be improved in such a manner that its detection sensitivity and measuring stability are increased. For this purpose, the gas sensitive phase contains an addition of a substance that increases the electronic conductivity and does not chemically react with the components of the sensitive phase and the gas to be determined.
摘要翻译： 一种固体电池，用于通过使用固定离子导体测量混合物的组分的活性，所述固体离子导体在一侧与参考相接触，另一侧与待确定的气体组分相敏相反， 以提高其检测灵敏度和测量稳定性的方式进行改进。 为此，气敏相包含增加电子传导性并且不与敏感相的成分和要测定的气体发生化学反应的物质的添加。
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