公开(公告)号：US20060049048A1

公开(公告)日：2006-03-09

申请号：US10540561

申请日：2003-12-25

申请人： Tomonori Kondo ,  Shoji Kitanoya ,  Norihiko Nadanami ,  Noboru Ishida ,  Takafumi Oshima

发明人： Tomonori Kondo ,  Shoji Kitanoya ,  Norihiko Nadanami ,  Noboru Ishida ,  Takafumi Oshima

IPC分类号： G01N27/26

CPC分类号： G01N27/4074 ,  H01M8/04089 ,  H01M2008/1095

摘要： A gas sensor capable of reversibly and continuously measuring the concentration of a catalyst poison gas such as CO without specially needing recovering means such as a heater, and measuring the catalyst poison gas concentration without being affected by H2O concentration. The electrical circuit (15) of the gas sensor has an AC power supply (19) for applying an AC voltage between both electrodes (3), (5), an AC voltmeter (21) for measuring an AC voltage (AC effective voltage V) between the both electrodes (3), (5), and an AC ammeter (23) for measuring a current (AC effective current I) running between the both electrodes (3), (5). An impedance is determined from the AC effective voltage V and the AC effective current I generated when the AC voltage is applied to the both electrodes (3), (5). Since this impedance corresponds to the catalyst poison gas concentration, the catalyst poison gas concentration can be determined from the impedance by using a map showing the relation between the impedance and the catalyst poison gas concentration.

摘要翻译： 一种气体传感器，其能够可靠地连续地测量催化剂毒气如CO的浓度，而不需要诸如加热器的回收装置，并且不受H 2 O 2的影响来测量催化剂毒气浓度 浓度。 气体传感器的电路（15）具有用于在两个电极（3），（5）之间施加交流电压的交流电源（19），用于测量交流电压的交流电压表（AC）（AC有效电压V （3），（5）和用于测量在两个电极（3），（5）之间运行的电流（AC有效电流I）的AC电流表（23）。 根据AC有效电压V和当向两个电极（3），（5）施加AC电压时产生的AC有效电流I）确定阻抗。 由于该阻抗对应于催化剂毒气浓度，所以可以通过使用示出阻抗与催化剂毒气浓度之间的关系的图来从阻抗确定催化剂毒气浓度。

公开(公告)号：US06913677B2

公开(公告)日：2005-07-05

申请号：US10242403

申请日：2002-09-13

申请人： Shoji Kitanoya ,  Norihiko Nadanami ,  Tomonori Kondo ,  Masaya Watanabe ,  Noboru Ishida

发明人： Shoji Kitanoya ,  Norihiko Nadanami ,  Tomonori Kondo ,  Masaya Watanabe ,  Noboru Ishida

IPC分类号： G01N27/416 ,  G01N27/407 ,  G01N33/00 ,  H01M8/04 ,  H01M8/10

CPC分类号： G01N27/4074 ,  G01N33/005

摘要： A hydrogen gas sensor is configured such that an O-ring 21 is disposed within a measurement chamber 11a in order to seal against a first support element 9a and against a proton conduction layer 1. This O-ring 21 assumes the form of a rectangular frame that surrounds a first electrode 3, and a substantially circular cross section, and is elastic, heat resistant, and durable. A first metal plate 23a and a second metal plate 23b are disposed from the outside on opposite support elements 9a and 9b, respectively. The hydrogen gas sensor of the present embodiment has a pair of right-hand and left-hand through-holes 29 formed therein so as to extend along the thickness direction thereof. Bolts 31 are inserted into the corresponding through-holes 29. By fastening the metal plates 23a and 23b from the outside by means of the bolts 31 and nuts 33, the opposite support elements 9a and 9b are fastened, thereby clamping the entire hydrogen sensor in a unitary condition.

摘要翻译： 氢气传感器被配置为使得O形环21设置在测量室11a内以便密封第一支撑元件9a并抵靠质子传导层1.该O形环21呈现为 围绕第一电极3的矩形框架和基本圆形的横截面，并且是弹性的，耐热的和耐用的。 第一金属板23a和第二金属板23b分别从外部设置在相对的支撑元件9a和9b上。 本实施方式的氢气传感器具有沿其厚度方向延伸的一对形成在其中的右侧和左侧通孔29。 螺栓31插入对应的通孔29.通过螺栓31和螺母33从外部紧固金属板23a和23b，将相对的支撑元件9a和9b紧固，从而将 整个氢传感器处于一体状态。

公开(公告)号：US06764582B2

公开(公告)日：2004-07-20

申请号：US10290162

申请日：2002-11-08

申请人： Norihiko Nadanami ,  Shoji Kitanoya ,  Tomonori Kondo ,  Masaya Watanabe ,  Noboru Ishida

发明人： Norihiko Nadanami ,  Shoji Kitanoya ,  Tomonori Kondo ,  Masaya Watanabe ,  Noboru Ishida

IPC分类号： G01N27407

CPC分类号： G01N27/4074 ,  G01N33/005

摘要： A gas sensor suitable for measuring hydrogen concentration, including a proton conductive layer (1); a first electrode (3) and a second electrode (5) provided on the proton conductive layer (1); a gas diffusion-limiting inlet (19) provided between the first electrode (3) and a measurement gas atmosphere (6) containing hydrogen gas; and a gas diffusion-limiting outlet (21) provided between the second electrode (5) and the atmosphere (6); wherein the ratio (a/b) between the diffusion resistance (a) of the diffusion limiting portion (19) and the diffusion resistance (b) of the gas outlet portion (21) is not greater than 2.

摘要翻译： 适用于测量氢浓度的气体传感器，包括质子传导层（1）; 设置在质子传导层（1）上的第一电极（3）和第二电极（5）。 设置在第一电极（3）和含有氢气的测量气体气氛（6）之间的气体扩散限制入口（19） 和设置在第二电极（5）和大气（6）之间的气体扩散限制出口（21）。 其中所述扩散限制部分（19）的扩散阻力（a）与所述气体出口部分（21）的扩散阻力（b）之比（a / b）不大于2。

公开(公告)号：US06533911B1

公开(公告)日：2003-03-18

申请号：US09590189

申请日：2000-06-09

申请人： Hiroki Fujita ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Ryuji Inoue ,  Takafumi Oshima

发明人： Hiroki Fujita ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Ryuji Inoue ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/4075 ,  G01N27/4067

摘要： A device and method for measuring combustible-gas concentration and a device and method for measuring hydrocarbon-gas concentration, which exhibit low dependence on oxygen concentration variations as well as low temperature dependence. Paste is applied to the inner surface of a closed-bottom cylindrical solid electrolyte element, thereby forming a layer serving as a reference electrode. Plating with platinum is performed, so as to form a layer serving as a first detection electrode, on the outer surface of the solid electrolyte element only at a portion extending from an end portion of the solid electrolyte element to the vicinity of the interface between a heating resistor and a heating-resistor lead portion, which are formed within a heater element contained in the cylindrical solid electrolyte element. Paste which contains gold powder and 10 parts of indium oxide is applied onto the platinum-plating layer so as to form a layer serving as a second detection electrode, followed by firing. Subsequently, a diffusion layer containing spinel is formed by thermal spraying on the surface of a detection electrode. The heater element is disposed in the solid electrolyte element such that an end portion abuts an inner bottom portion of the solid electrolyte element. Lead wires for measuring internal resistance, which extend from the reference electrodes, and a lead wire extending from the detection electrode are connected to a temperature controller.

摘要翻译： 用于测量可燃气体浓度的装置和方法以及测量烃 - 气体浓度的装置和方法，其对氧浓度变化的依赖性低以及低温依赖性。 将糊状物施加到封闭底部的圆柱形固体电解质元件的内表面，从而形成用作参考电极的层。 进行铂的电镀，以形成用作第一检测电极的层，仅在固体电解质元件的外表面上，仅在从固体电解质元件的端部延伸到位于固体电解质元件的界面附近的部分 加热电阻器和加热电阻器引线部分，其形成在容纳在圆柱形固体电解质元件中的加热器元件内。 将含有金粉末和10份氧化铟的浆料施加到铂镀层上，以形成用作第二检测电极的层，随后进行烧制。 随后，通过热电喷涂在检测电极的表面上形成含有尖晶石的扩散层。 加热器元件设置在固体电解质元件中，使得端部邻接固体电解质元件的内部底部。 用于测量从参考电极延伸的内部电阻的引线和从检测电极延伸的引线连接到温度控制器。

公开(公告)号：US6136170A

公开(公告)日：2000-10-24

申请号：US997738

申请日：1997-12-24

申请人： Ryuji Inoue ,  Tomohiro Fuma ,  Shoji Kitanoya ,  Yumi Mizutani ,  Masahito Kida ,  Takafumi Oshima ,  Takashi Hibino

发明人： Ryuji Inoue ,  Tomohiro Fuma ,  Shoji Kitanoya ,  Yumi Mizutani ,  Masahito Kida ,  Takafumi Oshima ,  Takashi Hibino

IPC分类号： G01N27/406 ,  G01N27/407 ,  G01N27/417 ,  G01N27/419 ,  G01N33/00 ,  G01N27/26

CPC分类号： G01N27/417 ,  G01N27/4065 ,  G01N27/4075 ,  G01N27/419 ,  G01N33/0047

摘要： The present invention provides an apparatus for measuring the concentration of a constituent to be detected in exhaust gas, which apparatus is capable of detecting with a high accuracy the concentration of the constituent to be detected in exhaust gas even though oxygen concentration in the exhaust gas varies. In an exhaust gas sensor 1 for use in the measuring apparatus, exhaust gas is introduced into spaces 15, 16 on both sides of an oxygen concentration cell element 4, and the oxidation catalyst activities of first to third electrodes 11 to 13 are adjusted so that there occurs a difference between the space 15 and the space 16 in consumption of the constituent to be detected, which consumption is caused by the oxidation of the constituent. Thus a concentration cell electromotive force is generated in the oxygen concentration cell element 4, and an oxygen pump element 3 pumps oxygen into or out of the space 15 so that the electromotive force is held at an target value EC not more than 10 mV. The pump current at this time is taken as the detection output on the constituent to be detected. The strengths of the oxygen concentration cell element 4 and of the oxygen pump element 3 can be increased by the provision of an integrated sintered body in which the elements 4 and 3 are laminated together with the space 15 formed between the first electrode 11 and the second electrode 12. Besides, the accuracy of detecting the constituent to be detected can be improved by the control over the temperature of the oxygen concentration cell element 4 and by the temperature compensation to the pump current.

摘要翻译： 本发明提供了一种用于测量排气中要检测的成分浓度的装置，该装置能够高精度地检测排气中的待检测物质的浓度，即使废气中的氧浓度变化 。 在用于测定装置的废气传感器1中，将废气引入到氧浓度电池元件4的两侧的空间15,16中，调整第一〜第三电极11〜13的氧化催化剂活性， 在被检测成分消耗的空间15和空间16之间存在差异，该消耗是由成分的氧化引起的。 因此，在氧浓度电池元件4中产生浓度电池电动势，并且氧气泵元件3将氧气输入到空间15中或从空间15排出，使得电动势保持在不大于10mV的目标值EC。 此时的泵电流被作为要检测的成分的检测输出。 可以通过提供一体的烧结体来增加氧浓度电池元件4和氧气泵元件3的强度，其中元件4和3与形成在第一电极11和第二电极11之间的空间15层叠在一起 电极12.此外，通过控制氧浓度电池元件4的温度以及对泵电流的温度补偿，可以提高检测成分的检测精度。

公开(公告)号：US06554984B2

公开(公告)日：2003-04-29

申请号：US09883999

申请日：2001-06-20

申请人： Ryuji Inoue ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Takafumi Oshima

发明人： Ryuji Inoue ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/417

摘要： A method of manufacturing a gas sensor, including a substrate electrode layer forming step, and a surface electrode layer forming step. The gas sensor includes first and second processing spaces, an oxygen concentration detection element, an oxygen pumping element, an oxidation catalyst and a combustible gas component concentration detection element.

摘要翻译： 一种制造气体传感器的方法，包括基底电极层形成步骤和表面电极层形成步骤。 气体传感器包括第一和第二处理空间，氧浓度检测元件，氧气抽吸元件，氧化催化剂和可燃气体成分浓度检测元件。

公开(公告)号：US06303012B1

公开(公告)日：2001-10-16

申请号：US09158147

申请日：1998-09-22

申请人： Ryuji Inoue ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Takafumi Oshima

发明人： Ryuji Inoue ,  Shoji Kitanoya ,  Kenji Kato ,  Tomohiro Fuma ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/417

摘要： The gas sensor 1 has the following constituent features: (1) first processing space 9: a measurement gas is introduced thereinto via a first gas passage 11; (2) second processing space 10: a gas contained in the first processing space 9 is introduced thereinto via a second gas passage 13; (3) oxygen concentration detection element 4: adapted to measure the oxygen concentration of a gas contained in the first processing space 9; (4) oxygen pumping element 3: adapted to reduce the oxygen concentration of the measurement gas introduced into the first processing space 9 within a range such that water vapor contained in the measurement gas is not substantially decomposed; (5) oxidation catalyst section 16: adapted to accelerate combustion of a combustible gas component contained in a gas introduced into the second processing space 10; and (6) combustible gas component concentration detection element 5: a constant voltage is applied thereto, and element 5 has an output current which varies according to the amount of oxygen consumed by combustion of a combustible gas component contained in the gas introduced into the second processing space 10 from the first processing space, to thereby provide information regarding the concentration of the combustible gas component of the measurement gas based on the output current.

摘要翻译： 气体传感器1具有以下构成特征：（1）第一处理空间9：经由第一气体通路11导入测定气体; （2）第二处理空间10：通过第二气体通道13将包含在第一处理空间9中的气体引入其中; （3）氧浓度检测元件4：适于测量包含在第一处理空间9中的气体的氧浓度; （4）氧气抽吸元件3：适于在测量气体中包含的水蒸气基本上不分解的范围内减少引入第一处理空间9的测量气体的氧浓度; （5）氧化催化剂部分16：适于加速包含在引入第二处理空间10的气体中的可燃气体组分的燃烧; 和（6）可燃气体成分浓度检测元件5：向其施加恒定电压，元件5具有输出电流，该输出电流根据包含在引入第二电极的气体中的可燃性气体成分的燃烧消耗的氧量而变化 处理空间10，从而基于输出电流提供关于测量气体的可燃气体成分的浓度的信息。

公开(公告)号：US5993625A

公开(公告)日：1999-11-30

申请号：US820522

申请日：1997-03-19

申请人： Ryuji Inoue ,  Yumi Kuroki ,  Tomohiro Fuma ,  Shoji Kitanoya ,  Satoshi Sugaya ,  Takafumi Oshima

发明人： Ryuji Inoue ,  Yumi Kuroki ,  Tomohiro Fuma ,  Shoji Kitanoya ,  Satoshi Sugaya ,  Takafumi Oshima

IPC分类号： G01N27/41 ,  G01N27/12 ,  G01N27/407 ,  G01N27/416 ,  G01N27/419

CPC分类号： G01N27/4074 ,  G01N27/419

摘要： In accordance with the present invention, there is provided an exhaust gas sensor which comprises an oxygen pump cell made of solid electrolyte having an oxygen ion conductivity, an oxygen sensor cell made of solid electrolyte having an oxygen ion conductivity and disposed in opposition to the pump cell in such a manner as to define therebetween a detection space, and a semiconductor detection element made of oxide semiconductor and disposed in the detection space for detecting a predetermined detected substance in the exhaust gas introduced to the detection space. The concentration of oxygen in the detection space is regulated so as to be included within a predetermined range through control of charge or discharge of oxygen into or from the detection space by means of the oxygen pump cell on the basis of the concentration of oxygen in the exhaust gas, which is detected by the oxygen sensor cell.

摘要翻译： 根据本发明，提供了一种废气传感器，其包括由具有氧离子传导性的固体电解质制成的氧气泵电池，由具有氧离子传导性的固体电解质制成的氧传感器电池并且与泵 以在其间限定检测空间的方式，以及由氧化物半导体制成的半导体检测元件，并设置在检测空间中，用于检测引入检测空间的排气中的预定检测物质。 调节检测空间中的氧浓度以便通过基于氧泵的浓度通过氧泵电池的控制将氧气进入或从检测空间排出来进入到预定范围内 废气，其由氧传感器单元检测。

公开(公告)号：US06325906B1

公开(公告)日：2001-12-04

申请号：US09453540

申请日：1999-12-03

申请人： Shoji Kitanoya ,  Tomohiro Fuma ,  Kenji Kato ,  Ryuji Inoue ,  Takafumi Oshima

发明人： Shoji Kitanoya ,  Tomohiro Fuma ,  Kenji Kato ,  Ryuji Inoue ,  Takafumi Oshima

IPC分类号： G01N27407

摘要： A gas sensor includes a first processing chamber 3 into which a gas under measurement is introduced through a first gas passage 2; a second processing chamber 5 into which the gas is introduced from the first processing chamber 3 through a second gas passage 4 and in which combustible gas components burn; a third gas passage 15 for introducing O2 into the second processing chamber 5 under diffusion resistance; oxygen pump element 12 adapted to pump out O2 from or pump into the first processing chamber 3 on the basis of an output from an oxygen-concentration sensor 13, which senses the oxygen concentration of the gas introduced into the second processing chamber 5, to thereby control the oxygen concentration of the gas; and a second oxygen pump including a second inner electrode 10 and a second outer electrode 11 formed on an oxygen-ion conductor 1 in such a manner as to face the interior and exterior, respectively, of the second processing chamber 5, and adapted to pump out O2 which remains unconsumed in burning mentioned above in the second processing chamber 5, through application of a constant voltage between the second inner electrode 10 and the second outer electrode 11. The residual oxygen concentration of the second processing chamber 5 is determined on the basis of a second oxygen pump current flowing between the second inner and outer electrodes 10 and 11, whereby the concentration of combustible gas components contained in the gas under measurement is determined.

摘要翻译： 气体传感器包括：第一处理室3，通过第一气体通道2引入测量气体; 第二处理室5，通过第二气体通道4从第一处理室3引入气体，其中可燃气体组分燃烧; 用于以扩散阻力将O 2引入第二处理室5的第三气体通道15; 氧气泵元件12适于根据来自氧浓度传感器13的输出来泵出O2或泵入第一处理室3，氧浓度传感器13检测引入第二处理室5的气体的氧气浓度，从而 控制气体的氧气浓度; 以及第二氧气泵，其包括分别形成在氧离子导体1上的第二内部电极10和第二外部电极11，以分别面对第二处理室5的内部和外部，并且适于泵送 在第二处理室5中通过在第二内部电极10和第二外部电极11之间施加恒定电压而在上述燃烧中保持未燃烧的O 2。第二处理室5的残余氧浓度基于 在第二内电极10和第二电极11之间流动的第二氧泵电流，由此确定测量气体中所含的可燃气体组分的浓度。

公开(公告)号：US06338783B1

公开(公告)日：2002-01-15

申请号：US09448441

申请日：1999-11-24

申请人： Ryuji Inoue ,  Shoji Kitanoya ,  Tomohiro Fuma ,  Kenji Kato ,  Takafumi Oshima

发明人： Ryuji Inoue ,  Shoji Kitanoya ,  Tomohiro Fuma ,  Kenji Kato ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/417

摘要： A gas sensor which can detect the concentration of a combustible gas component in a measurement gas with high accuracy even when the oxygen concentration of the measurement gas or the element temperature changes and which has an excellent response in detecting the combustible gas component is disclosed. In a gas sensor 1, the oxygen concentration of a measurement gas is adjusted to a predetermined level within a first processing space 9 through operation of a first oxygen pump element 3. The measurement gas having an adjusted oxygen concentration is then introduced into a second processing space 10, where a combustible gas component is burned through the assistance of electrodes 16 and 17 functioning as oxidation catalyst sections. Constant voltage is applied to a combustible gas component concentration detection element 5. In this state, when the amount of oxygen changes due to the combustion of the combustible gas component, the output current of the combustible gas component concentration detection element 5 changes with change in the amount of oxygen. Therefore, information regarding the combustible gas component concentration of the original measurement gas can be obtained from the value of the output current. Further, oxygen required to burn the combustible gas component within the second processing space 10 is supplemented by a second oxygen pump element 6. Unlike conventional apparatuses, no feedback system is used, and a variation in the concentration of the combustible gas component appears directly as a variation in the current of the combustible gas component concentration detection element 5. Therefore, a high detection response is obtained.

摘要翻译： 公开了一种气体传感器，其即使在测量气体或元件温度的氧浓度变化并且在检测可燃气体成分时具有优异的响应性的情况下也可以高精度地检测测量气体中的可燃气体成分的浓度。 在气体传感器1中，测量气体的氧浓度通过第一氧气泵元件3的操作在第一处理空间9内被调节到预定水平。然后将具有调节氧浓度的测量气体引入第二处理 空间10，其中通过用作氧化催化剂部分的电极16和17的帮助燃烧可燃气体组分。 恒定电压被施加到可燃气体成分浓度检测元件5上。在这种状态下，当由于可燃性气体成分的燃烧而导致氧气的变化时，可燃性气体成分浓度检测元件5的输出电流随着 氧气量。 因此，可以从输出电流的值获得关于原始测量气体的可燃气体成分浓度的信息。 此外，在第二处理空间10内燃烧可燃气体成分所需的氧被第二氧气泵元件6补充。与常规装置不同，不使用反馈系统，并且可燃气体组分的浓度的变化直接作为 可燃性气体成分浓度检测元件5的电流的变化。因此，获得高检测响应。