公开(公告)号：US5763763A

公开(公告)日：1998-06-09

申请号：US731307

申请日：1996-10-15

申请人： Nobuhide Kato ,  Noriyuki Ina ,  Yasushi Watanabe ,  Takao Murase

发明人： Nobuhide Kato ,  Noriyuki Ina ,  Yasushi Watanabe ,  Takao Murase

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/416 ,  G01N27/419 ,  G01N33/00 ,  G01N27/46 ,  G01N27/58

CPC分类号： G01N27/4074 ,  G01N27/419 ,  G01N33/0014

摘要： Disclosed is a method and a sensing device capable of measuring a predetermined measurement gas component continuously and accurately with good response over a long period of time without being affected by a high oxygen concentration in a measurement gas. The measurement gas is introduced into a first processing zone. A first electrochemical pumping cell is used to lower a partial pressure of oxygen in an atmosphere thereof to a degree sufficient to control a partial pressure of oxygen in a subsequent second processing zone. The gas is introduced into the second processing zone. Oxygen in an atmosphere is pumped out by using a second electrochemical pumping cell so that the partial pressure of oxygen in the atmosphere is controlled to have a low value of partial pressure of oxygen which does not substantially affect measurement of an amount of the measurement gas component. The gas is introduced into a third processing zone. Oxygen produced by reducing or decomposing the measurement gas component is pumped out by using a third electrochemical pumping cell. The amount of the measurement gas component is determined from a detected value of a pumping current flowing through the third electrochemical pumping cell. The amount of the measurement gas component may be also determined by measuring an electromotive force by using an electrochemical sensor cell, in place of the third electrochemical pumping cell.

摘要翻译： 本发明公开了一种方法和检测装置，其能够在不受测量气体中的高氧浓度的影响的情况下长时间连续准确地测量预定的测量气体成分，并具有良好的响应。 将测量气体引入第一处理区域。 第一电化学泵送电池用于将氧气在其气氛中的分压降低至足以控制随后的第二处理区域中的氧分压。 将气体引入第二处理区。 通过使用第二电化学泵送电池将大气中的氧气抽出，使得大气中的氧分压被控制为具有低的氧分压值，其基本上不影响测量气体组分的量的测量 。 将气体引入第三处理区域。 通过使用第三电化学泵送单元泵送通过还原或分解测量气体组分产生的氧气。 测量气体成分的量根据流过第三电化学泵送单元的泵浦电流的检测值来确定。 测量气体组分的量也可以通过使用电化学传感器单元来代替第三电化学泵送单元来测量电动势来确定。

公开(公告)号：US6036841A

公开(公告)日：2000-03-14

申请号：US854746

申请日：1997-05-12

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27/407 ,  G01N27/416 ,  G01N27/419

CPC分类号： G01N27/419 ,  G01N27/4074

摘要： A method for measuring nitrogen oxide (NOx) in a gas by decomposing NOx in the gas and measuring an amount of oxygen generated by the decomposition includes: introducing the gas to a first inner space under a first diffusion resistance and connected with an external space, controlling an oxygen partial pressure in an atmosphere in the first inner space to be a predetermined low value at which NO is not decomposed substantially by a main pump means, introducing a controlled atmosphere of the first inner space into a second inner space which is connected with the first inner space and which is under a second diffusion resistance, and converting the atmosphere into an electric signal corresponding to the quantity of oxygen generated by decomposition or reduction of NOx contained in the atmosphere by an electric signal conversion means. A first oxygen concentration detecting means is disposed for detecting an oxygen partial pressure in the second inner space, and a control voltage to be applied to the main pump means is adjusted on the basis of an output of the first oxygen concentration detecting means.

摘要翻译： 通过分解气体中的NOx并测量分解产生的氧气量来测量气体中的氮氧化物（NOx）的方法包括：将气体以第一扩散电阻引入第一内部空间并与外部空间连接， 将第一内部空间中的气氛中的氧分压控制为基本上不通过主泵装置分解NO的预定低值，将第一内部空间的受控气氛引入与第二内部空间连接的第二内部空间 第一内部空间并且处于第二扩散电阻下，并且通过电信号转换装置将气氛转换成与通过分解或还原包含的NOx产生的氧气量相对应的电信号。 设置第一氧浓度检测装置，用于检测第二内部空间中的氧分压，并且基于第一氧浓度检测装置的输出调节施加到主泵装置的控制电压。

公开(公告)号：US06036842A

公开(公告)日：2000-03-14

申请号：US882075

申请日：1997-06-25

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27/419 ,  G01N27/407 ,  G01N27/416 ,  G01N27/417

CPC分类号： G01N27/417 ,  G01N27/4071

摘要： A system is constructed such that a voltage between an inner pumping electrode and a reference electrode is measured to determine a difference between a measured voltage and a reference voltage so that a pumping voltage is controlled by using the differential voltage. Specifically, a comparative amplifier is provided for comparing the reference voltage with the terminal voltage between the reference electrode and the inner pumping electrode, and amplifying the difference therebetween with a predetermined gain to make an output. The system is wired and connected such that the output voltage (differential voltage) from the comparative amplifier is applied, as the pumping voltage supplied to an oxygen pump, between the inner pumping electrode and an outer pumping electrode. The inner pumping electrode is grounded. Accordingly, for example, when the oxygen pump is used, it is possible to effectively avoid the oscillation phenomenon in the feedback control system for the control voltage for the oxygen pump.

摘要翻译： 构造系统，使得内部泵浦电极和参考电极之间的电压被测量以确定测量的电压和参考电压之间的差异，使得通过使用差分电压来控制泵浦电压。 具体地，提供比较放大器，用于将参考电压与参考电极和内部泵浦电极之间的端子电压进行比较，并以预定的增益放大其间的差以产生输出。 系统被布线和连接，使得来自比较放大器的输出电压（差分电压）作为提供给氧泵的泵浦电压在内部泵浦电极和外部泵浦电极之间施加。 内部泵送电极接地。 因此，例如，当使用氧气泵时，可以有效地避免用于氧气泵的控制电压的反馈控制系统中的振荡现象。

公开(公告)号：US06306271B1

公开(公告)日：2001-10-23

申请号：US09490046

申请日：2000-01-24

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N27/4074

摘要： A sensor for measuring nitrogen oxide (NOx) in a gas by decomposing NOx in the gas and measuring an amount of oxygen generated by the decomposition includes: means for introducing the gas to a first inner space under a first diffusion resistance and connected with an external space, means for controlling an oxygen partial pressure in an atmosphere in the first inner space to be a predetermined low value at which NO is not decomposed substantially by a main pump means, means for introducing a controlled atmosphere of the first inner space into a second inner space which is connected with the first inner space and which is under a second diffusion resistance, and means for converting the atmosphere into an electric signal corresponding to the quantity of oxygen generated by decomposition or reduction of NOx contained in the atmosphere by an electric signal conversion means. A first oxygen concentration detecting means is disposed for detecting an oxygen partial pressure in the second inner space, and a control voltage to be applied to the main pump means is adjusted on the basis of an output of the first oxygen concentration detecting means.

摘要翻译： 用于通过分解气体中的NOx并测量由分解产生的氧气量来测量气体中的氮氧化物（NOx）的传感器包括：用于在第一扩散电阻下将气体引入第一内部空间并与外部连接的装置 空间，用于将第一内部空间中的气氛中的氧分压控制为基本上由主泵装置分解NO的预定低值的装置，用于将第一内部空间的受控气氛引入第二内部空间的装置 与第一内部空间连接并且处于第二扩散电阻的内部空间，以及用于将气氛转换成与通过电信号包围在大气中的NOx的分解或还原所产生的氧气量相对应的电信号的装置 转换手段。 设置第一氧浓度检测装置，用于检测第二内部空间中的氧分压，并且基于第一氧浓度检测装置的输出调节施加到主泵装置的控制电压。

公开(公告)号：US6093294A

公开(公告)日：2000-07-25

申请号：US882071

申请日：1997-06-25

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27/419 ,  G01N27/407 ,  G01N27/416

CPC分类号： G01N27/407

摘要： Disclosed are a gas sensor and a gas concentration controller each comprising a comparative amplifier for comparing a reference voltage with a terminal voltage between a reference electrode and an inner pumping electrode to obtain a difference therebetween, and amplifying the difference with a predetermined gain to make an output. Wiring connection is arranged so that the output voltage from the comparative amplifier is applied, as a pumping voltage to an oxygen pump, between the electrode and an outer pumping electrode. A resistor for detecting a pumping current is inserted and connected between an output terminal of the comparative amplifier and the electrode of the oxygen pump. A short circuit is formed between both ends of the resistor by using a capacitor. One electrode of the capacitor is connected to a non-inverting terminal of a differential amplifier, and the other electrode is connected to an inverting terminal of the differential amplifier. Accordingly, it is possible to effectively avoid the oscillation phenomenon of the feedback control system for the oxygen pump, and absorb the error in the amount corresponding to voltage drop resulting from the impedance of the oxygen pump.

摘要翻译： 公开了一种气体传感器和气体浓度控制器，每个气体浓度控制器包括比较放大器，用于将参考电压与参考电极和内部泵浦电极之间的端子电压进行比较以获得它们之间的差异，并且以预定的增益放大该差值， 输出。 配线连接被布置成使得来自比较放大器的输出电压作为氧气泵的泵浦电压施加在电极和外部泵浦电极之间。 用于检测泵浦电流的电阻器被插入并连接在比较放大器的输出端子和氧气泵的电极之间。 通过使用电容器在电阻器的两端之间形成短路。 电容器的一个电极连接到差分放大器的同相端子，另一个电极连接到差分放大器的反相端子。 因此，可以有效地避免氧泵的反馈控制系统的振荡现象，并且吸收由于氧气泵的阻抗导致的与电压降相对应的量的误差。

公开(公告)号：US5928494A

公开(公告)日：1999-07-27

申请号：US818715

申请日：1997-03-14

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27/41 ,  G01N27/26 ,  G01N27/406 ,  G01N27/416 ,  G01N27/419 ,  G01N27/407

CPC分类号： G01N27/4065 ,  G01N27/419

摘要： A gas sensor for measuring a quantity of specific component in a measuring gas includes a main pump means which has an electrochemical pump cell. The electrochemical pump cell includes a solid electrolyte partition exposed to external space, an inner pump electrode and an outer pump electrode formed on the inner surface and outer surface of the solid electrolyte partition, respectively. The main pump means treats oxygen contained in the measuring gas introduced from the outer space by pumping processing on the basis of a control voltage applied between the inner pump electrode and the outer pump electrode. An RLC element which has a specific electric characteristic value corresponding to a characteristic value of the electrochemical pump cell is connected in parallel with the electrochemical pump cell.

摘要翻译： 用于测量测量气体中的特定成分量的气体传感器包括具有电化学泵电池的主泵装置。 电化学泵电池包括暴露于外部空间的固体电解质隔板，分别形成在固体电解质隔板的内表面和外表面上的内泵电极和外泵电极。 主泵装置基于施加在内泵电极和外泵电极之间的控制电压通过泵送处理来处理从外部空间引入的测量气体中包含的氧气。 与电化学泵电池的特性值相对应的具有特定电特性值的RLC元件与电化学泵电池并联连接。

公开(公告)号：US5772965A

公开(公告)日：1998-06-30

申请号：US632148

申请日：1996-04-15

申请人： Nobuhide Kato ,  Noriyuki Ina

发明人： Nobuhide Kato ,  Noriyuki Ina

IPC分类号： G01N27/41 ,  F01N3/20 ,  F01N11/00 ,  F02D41/14 ,  G01N27/26 ,  G01N27/419 ,  G01N33/00

CPC分类号： F01N11/007 ,  G01N27/419 ,  F01N2550/02 ,  Y02T10/47 ,  Y10T436/208339

摘要： A system for detecting deterioration of an exhaust gas control catalyst provided in an exhaust gas passage through which a combustion exhaust gas is discharged, including a processing zone communicating with a portion of the passage which is downstream of the catalyst and a pumping cell including an oxygen ion conductive solid electrolyte layer and a pair of electrodes one of which is exposed to the processing zone, wherein the pumping cell pumps oxygen out of the processing zone so as to control oxygen partial pressure in the processing zone which corresponds to a monitor voltage, at a value at which the combustible gas component within the processing zone cannot be burned, and the oxygen concentration in the combustion exhaust gas is obtained based on a pumping current flowing between the pair of electrodes of the pumping cell, whereby the degree of deterioration of the catalyst is determined on the basis of the obtained oxygen concentration.

摘要翻译： 一种用于检测设置在排气通道中的废气控制催化剂的劣化的系统，通过该废气通道排出燃烧废气，包括与该催化剂下游的通道的一部分连通的处理区域和包含氧气的泵送单元 离子传导固体电解质层和一对电极暴露于处理区域，其中泵送电池将氧气从处理区域中泵出，以便控制处理区域中对应于监测电压的氧分压， 可以基于在泵送电池的一对电极之间流动的泵浦电流获得处理区域内的可燃气体成分不能燃烧的值，并且获得燃烧废气中的氧浓度，由此， 基于获得的氧浓度确定催化剂。

公开(公告)号：US4528086A

公开(公告)日：1985-07-09

申请号：US604474

申请日：1984-04-27

申请人： Nobuhide Kato ,  Takao Murase

发明人： Nobuhide Kato ,  Takao Murase

IPC分类号： F02D41/14 ,  G01N27/406 ,  G01N27/409 ,  G01N27/46

CPC分类号： G01N27/4067

摘要： An oxygen sensor having a bar-shaped heater inserted in an elongate bore formed in a tubular body of solid electrolyte which has porous platinum electrodes on its inner and outer surfaces and which is supported by a housing such that its closed end portion is exposed to exhaust gas and such that the elongate bore is gas-tight with respect to the exhaust gas. The bar-shaped heater comprises a heating resistor having a positive temperature coefficient, a ceramic body carrying the heating resistor so as to embed the latter, and a pair of lead wires. The ceramic body has on its periphery a pair of terminal pads connected to the heating resistor. The ends of the lead wires are brazed to the terminal pads with a brazing material containing silver. The ceramic body further has a pair of equipotential members disposed outwardly of the pair of terminal pads to enclose at least portions of the peripheries of the pads which are opposite to each other.

摘要翻译： 一种氧传感器，其具有插入在形成于固体电解质的管状体中的细长孔中的棒状加热器，其在其内表面和外表面上具有多孔铂电极，并且由壳体支撑，使得其封闭端部暴露于排气 气体并且使得细长孔相对于废气气密。 棒状加热器包括具有正温度系数的加热电阻器，承载加热电阻器以便嵌入加热电阻器的陶瓷体和一对引线。 陶瓷体在其周边上具有连接到加热电阻器的一对端子焊盘。 引线的端部用含有银的钎焊材料钎焊到端子焊盘。 陶瓷体还具有一对等电位构件，该等电位构件设置在该对端子衬垫的外侧，以封闭彼此相对的衬垫周边的至少一部分。

公开(公告)号：US4668375A

公开(公告)日：1987-05-26

申请号：US791538

申请日：1985-10-25

申请人： Nobuhide Kato ,  Takao Murase

发明人： Nobuhide Kato ,  Takao Murase

IPC分类号： G01N27/04 ,  G01N27/00 ,  G01N27/12 ,  G01N27/403 ,  G01N27/407 ,  G01N27/409 ,  H05K1/11 ,  G01N27/46

CPC分类号： G01N27/4071

摘要： An electric connection terminal arranged at a rear end of a sensor element and capable of affording quick and easy connection of the sensor element with a contacting element connected to a lead wire extending into a connector socket or connector insulator accommodating the contacting element for transmitting a signal detected at the front end of the sensor element, is composed of at least two conductive layers, and at least the lowermost layer of the conductive layers is composed of a mixture of a conductive metal and ceramics and/or glass, so that the layers bond firmly with each other and the lowermost layer bonds most firmly to the sensor element, whereby peeling-off of the connection terminal from the sensor element due to friction thereof against the contacting element and repetition of heating and cooling of the sensor element is eliminated.

摘要翻译： 电连接端子布置在传感器元件的后端，并且能够快速且容易地连接传感器元件与连接到延伸到连接器插座的引线的接触元件或容纳接触元件的连接器绝缘体，用于传输信号 在传感器元件的前端检测到，由至少两个导电层构成，并且导电层的至少最下层由导电金属和陶瓷和/或玻璃的混合物组成，使得层结合 彼此牢固并且最底层最牢固地结合到传感器元件，从而消除了由于其与接触元件的摩擦而导致的连接端子与传感器元件的剥离以及传感器元件的加热和冷却的重复。

公开(公告)号：US4512871A

公开(公告)日：1985-04-23

申请号：US604473

申请日：1984-04-27

申请人： Nobuhide Kato ,  Takao Murase

发明人： Nobuhide Kato ,  Takao Murase

IPC分类号： G01N27/406 ,  G01N27/58

CPC分类号： G01N27/4067

摘要： An oxygen sensor having a bar-shaped heater inserted in an elongate bore formed in a tubular solid electrolyte body which has porous platinum electrodes on its inner and outer surfaces and which is supported by a housing such that its closed end portion is exposed to exhaust gas and such that the elongate bore is gas-tight with respect to the exhaust gas. The bar-shaped heater comprises a heating resistor having a positive temperature coefficient, a ceramic body carrying the heating resistor so as to embed the latter, and a pair of lead wires. The ceramic body has on its periphery a pair of terminal pads connected to the heating resistor. The ends of the lead wires are brazed to the pads with a mass of brazing material containing silver. An exposed surface of the brazing mass is coated with a metal layer made of metal which is different from silver or its alloy. The metal layer may be further coated with a heat-resistant layer.

摘要翻译： 一种氧传感器，其具有插入形成在管状固体电解质体中的细长孔中的棒状加热器，其在其内表面和外表面上具有多孔铂电极，并且由壳体支撑，使得其封闭端部暴露于废气 并且使得细长孔相对于废气气密。 棒状加热器包括具有正温度系数的加热电阻器，承载加热电阻器以便嵌入加热电阻器的陶瓷体和一对引线。 陶瓷体在其周边上具有连接到加热电阻器的一对端子焊盘。 引线的端部用大量含银的钎焊材料钎焊到焊盘。 钎焊块的暴露表面涂覆有不同于银或其合金的金属制成的金属层。 金属层可以进一步涂覆耐热层。