公开(公告)号：US07341694B2

公开(公告)日：2008-03-11

申请号：US10669660

申请日：2003-09-25

申请人： Hiroyuki Nishiyama ,  Shiro Kakimoto ,  Ryuji Inoue ,  Hitoshi Yokoi ,  Noboru Ishida ,  Takafumi Oshima ,  Satoshi Sugaya ,  Koichi Imaeda ,  Tadashi Hattori ,  Atsushi Satsuma

发明人： Hiroyuki Nishiyama ,  Shiro Kakimoto ,  Ryuji Inoue ,  Hitoshi Yokoi ,  Noboru Ishida ,  Takafumi Oshima ,  Satoshi Sugaya ,  Koichi Imaeda ,  Tadashi Hattori ,  Atsushi Satsuma

IPC分类号： G01N27/04 ,  G01N33/00

CPC分类号： G01N33/0054 ,  G01N27/4075 ,  Y02A50/246 ,  Y10T436/173845 ,  Y10T436/175383 ,  Y10T436/25875

摘要： In an ammonia sensor (1), lead portions (7) and (9) are provided on an insulating substrate (5); a pair of comb-shaped electrodes (11) and (13) are connected to the lead portions (7) and (9), respectively; a sensitive layer (15) is provided on the comb-shaped electrodes (11) and (13); and a protective layer (17) is provided on the sensitive layer (15). Particularly, the sensitive layer (15) is formed of a gas-sensitive raw material predominantly containing ZrO2 and containing at least W in an amount of 2 to 40 wt. % as reduced to WO3.

摘要翻译： 在氨传感器（1）中，引线部分（7）和（9）设置在绝缘基板（5）上; 一对梳状电极（11）和（13）分别连接到引线部分（7）和（9）; 敏感层（15）设置在梳状电极（11）和（13）上; 并且在敏感层（15）上设置保护层（17）。 特别地，敏感层（15）由主要含有ZrO 2的气敏原料形成，至少含有W为2〜40wt。 ％降低至WO 3。

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：US07306712B2

公开(公告)日：2007-12-11

申请号：US10144835

申请日：2002-05-15

申请人： Masaya Watanabe ,  Norihiko Nadanami ,  Tomonori Kondo ,  Ryuji Inoue ,  Takafumi Oshima ,  Noboru Ishida

发明人： Masaya Watanabe ,  Norihiko Nadanami ,  Tomonori Kondo ,  Ryuji Inoue ,  Takafumi Oshima ,  Noboru Ishida

IPC分类号： G01N27/407

CPC分类号： G01N33/005 ,  G01N27/4074 ,  G01N33/006

摘要： This invention provides a gas sensor including a proton-conductive polymer electrolyte layer and a method for measuring gas concentration, that are capable of measuring gas concentration at high accuracy notwithstanding the presence of water vapor.

摘要翻译： 本发明提供了一种气体传感器，其包括质子传导性聚合物电解质层和气体浓度测量方法，尽管存在水蒸气，但能够高精度地测量气体浓度。

公开(公告)号：US06797151B2

公开(公告)日：2004-09-28

申请号：US10035248

申请日：2002-01-04

申请人： Norihiko Nadanami ,  Tomonori Kondo ,  Ryuji Inoue ,  Noboru Ishida ,  Takafumi Oshima

发明人： Norihiko Nadanami ,  Tomonori Kondo ,  Ryuji Inoue ,  Noboru Ishida ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/4074 ,  G01N33/004

摘要： A CO sensor and a CO-concentration measurement method which enables accurate measurement of CO concentration irrespective of the hydrogen concentration of a gas under measurement. By applying a first predetermined voltage between first and second electrodes 7 and 8, hydrogen contained in a gas under measurement which has been introduced into a first measurement space 2 via a first diffusion-controlling section 1 dissociates, decomposes, or reacts with another element to generate protons. The thus-generated protons are transported from the first electrode 7 to the second electrode 8 via a first proton-conductive layer 5 or protons are transported from the second electrode 8 to the first electrode 7 via the first proton-conductive layer 5 (when the hydrogen concentration of the measurement gas is extremely low), so that the hydrogen concentration within the first measurement space 2 is controlled to a constant level. The gas under measurement having a controlled hydrogen concentration is introduced into a second measurement space 4 via a second diffusion-controlling section 3, and a second predetermined voltage is applied between third and fourth electrodes 9 and 10. The CO concentration of the gas under measurement is obtained based on current (a limiting proton current) which flows between the third and fourth electrodes 9 and 10. Alternatively, the CO concentration of the gas under measurement is obtained from electromotive force generated between the third and fourth electrodes 9 and 10.

摘要翻译： 一种CO传感器和CO浓度测量方法，其能够精确测量CO浓度，而与测量的气体的氢浓度无关。 通过在第一和第二电极7和8之间施加第一预定电压，通过第一扩散控制部分1被引入到第一测量空间2中的测量气体中所含的氢离子，分解或与其它元件反应 产生质子。 由此产生的质子经由第一质子传导层5从第一电极7传送到第二电极8，或者质子经由第一质子传导层5从第二电极8输送到第一电极7（当 测量气体的氢浓度极低），使得第一测量空间2内的氢浓度被控制在一定水平。 具有受控氢浓度的测量气体经由第二扩散控制部分3引入第二测量空间4，并且在第三和第四电极9和10之间施加第二预定电压。测量气体的CO浓度 基于在第三和第四电极9和10之间流动的电流（限制质子电流）获得。或者，测量气体的CO浓度是从第三和第四电极9和10之间产生的电动势获得的。

公开(公告)号：US07189364B2

公开(公告)日：2007-03-13

申请号：US10119901

申请日：2002-04-11

申请人： Norihiko Nadanami ,  Tomonori Kondo ,  Masaya Watanabe ,  Ryuji Inoue ,  Noboru Ishida ,  Takafumi Oshima

发明人： Norihiko Nadanami ,  Tomonori Kondo ,  Masaya Watanabe ,  Ryuji Inoue ,  Noboru Ishida ,  Takafumi Oshima

IPC分类号： B32B5/02 ,  B32B27/04 ,  B32B27/12 ,  G01N27/00 ,  G01N7/00

CPC分类号： G01N33/005 ,  G01N27/4074 ,  Y10T436/11 ,  Y10T436/203332 ,  Y10T436/22 ,  Y10T436/25875

摘要： A hydrogen sensor includes a first electrode 3 and a second electrode 4 provided in contact with a proton conduction layer 2; a gas diffusion controlling portion 6 provided between a measurement gas atmosphere and the first electrode 3; and a support element (1a, 1b) for supporting the proton conduction layer 6, the first electrode 3, the second electrode 4, and the gas diffusion controlling portion 6. Hydrogen contained in a measurement gas introduced via the gas diffusion controlling portion 6 is dissociated, decomposed, or reacted by applying a voltage between the first electrode 3 and the second electrode 4 to thereby generate protons. Hydrogen concentration is obtained on the basis of a limiting current generated as a result of the generated protons being pumped out via the proton conduction layer 2 from the first electrode 3 side of the proton conduction layer to the second electrode 4 side of the proton conduction layer. Hydrogen concentration on the first electrode 2 is controlled to a partial pressure of not less than 10−12 atm, or more preferably, of not less than 3×10−12 atm and of less than 10−2 atm.

摘要翻译： 氢传感器包括与质子传导层2接触而设置的第一电极3和第二电极4; 设置在测量气体气氛和第一电极3之间的气体扩散控制部分6; 以及用于支撑质子传导层6，第一电极3，第二电极4和气体扩散控制部分6的支撑元件（1a，1b）。 通过气体扩散控制部分6导入的测量气体中所含的氢离子，分解或反应，通过在第一电极3和第二电极4之间施加电压从而产生质子。 基于由生成的质子经由质子传导层2从质子传导层的第一电极3侧向质子传导层的第二电极4侧泵出的限制电流获得氢浓度 。 将第一电极2上的氢浓度控制在不低于大气压的分压，或者更优选不低于3×10 12大气压，以及 小于10-2大气压。

公开(公告)号：US07210333B2

公开(公告)日：2007-05-01

申请号：US10857495

申请日：2004-06-01

申请人： Hiroki Fujita ,  Koichi Fujita ,  Satoshi Sugaya ,  Kenji Kato ,  Ryuji Inoue ,  Noboru Ishida

发明人： Hiroki Fujita ,  Koichi Fujita ,  Satoshi Sugaya ,  Kenji Kato ,  Ryuji Inoue ,  Noboru Ishida

IPC分类号： G01N7/00

CPC分类号： G01N27/121

摘要： A humidity-sensitive porous layer (13) of a humidity-sensitive element section (3) of a humidity sensor (1) is formed of a crystalline phase oxide grains such as Al2O3—SnO2—TiO2 and of a glass phase such as silicate glass covering the crystalline phase. The glass phase contains an alkali metal oxide and/or alkaline earth metal oxide such as Li2O. The humidity sensitive porous layer (13) assumes a skeletal structure that is formed of crystalline phase oxide grains covered or coated with the glass phase. A heater (17) of the humidity sensor is controlled to heat the humidity-sensitive element section (3) at a temperature ranging from 500° C. to 800° C. so as to clean off the humidity-sensitive element section while an internal combustion engine is running and exhausting fouling substances. Measurement of Humidity in an exhaust gas exhausted from an exhaust gas purifying apparatus of an internal combustion engine is carried out by using the humidity sensor (1), so long as the exhaust gas temperature does not exceed 100° C. regardless of whether or not the engine is running.

摘要翻译： 湿度传感器（1）的湿度敏感元件部分（3）的湿度敏感多孔层（13）由诸如Al 2 O 3的结晶相氧化物晶粒形成 和玻璃相如覆盖结晶相的硅酸盐玻璃。 玻璃相含有碱金属氧化物和/或碱土金属氧化物如Li 2 O。 湿度敏感多孔层（13）呈现由覆盖或涂覆有玻璃相的结晶相氧化物颗粒形成的骨架结构。 控制湿度传感器的加热器（17），以在500℃至800℃的温度范围内加热湿度敏感元件部分（3），从而清洁湿度敏感元件部分，同时内部 内燃机正在运行并排出污垢物质。 通过使用湿度传感器（1）进行从内燃机的排气净化装置排出的废气中的湿度的测定，只要排气温度不超过100℃即可 发动机正在运行。

公开(公告)号：US07276141B2

公开(公告)日：2007-10-02

申请号：US10628400

申请日：2003-07-29

申请人： Norihiko Nadanami ,  Norobu Ishida ,  Takafumi Oshima ,  Ryuji Inoue ,  Tomonori Kondo

发明人： Norihiko Nadanami ,  Norobu Ishida ,  Takafumi Oshima ,  Ryuji Inoue ,  Tomonori Kondo

IPC分类号： G01N27/407

CPC分类号： G01N27/4074 ,  G01N33/005

摘要： A hydrogen gas sensor capable of accurately measuring hydrogen concentration of a measurement gas atmosphere in the presence of a variety of interfering gasses such as H2O and CO. In the hydrogen gas sensor, the flow sectional area of a diffusion-rate limiting portion 6 is rendered small; the electrode surfaces of first and second electrodes 3 and 4 are rendered large; and/or a solution containing a polymer electrolyte which may be identical to that of a proton-conductive layer 2 is applied onto the surfaces of the first and second electrodes 3 and 4 to thereby form a layer containing the polymer electrolyte. Thus, the rate of conduction of protons from the first electrode 3 to the second electrode 4 becomes greater than the rate at which protons are derived from hydrogen which is introduced onto the first electrode 3 via the diffusion-rate limiting portion 6.

摘要翻译： 一种氢气传感器，能够在各种干扰气体如H 2 O和CO存在下精确测量测量气体气氛的氢浓度。在氢气传感器中，流量截面积 扩散速率限制部分6变小; 第一和第二电极3和4的电极表面变大; 和/或含有与质子传导层2相同的聚合物电解质的溶液施加到第一和第二电极3和4的表面上，从而形成含有聚合物电解质的层。 因此，从第一电极3到第二电极4的质子传导速率变得比通过扩散速率限制部分6被引入到第一电极3上的氢导出质子的速率大。

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：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：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。