公开(公告)号：US5660661A

公开(公告)日：1997-08-26

申请号：US462210

申请日：1995-06-05

申请人： Tomio Sugiyama ,  Masatoshi Suzuki ,  Hiromi Sano ,  Toshitaka Saito ,  Satoru Nomura

发明人： Tomio Sugiyama ,  Masatoshi Suzuki ,  Hiromi Sano ,  Toshitaka Saito ,  Satoru Nomura

IPC分类号： G01N27/406 ,  G01N27/407 ,  B32B9/00

CPC分类号： B32B18/00 ,  C04B35/119 ,  C04B35/486 ,  G01N27/4067 ,  G01N27/4071 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2237/343 ,  C04B2237/348 ,  C04B2237/68 ,  C04B2237/704

摘要： A measuring electrode and a reference plate are formed on the front and rear surfaces, respectively, of the electrolytic plate. The vent plate is provided with a vent channel. The heater base comprises a heating element. The electrolytic plate is made of a green sheet of zirconium oxide consisting of 5 to 7 molar % Y.sub.2 O.sub.3 and 0 to 5 parts by weight of aluminum oxide. The average particle diameter of the zirconium oxide powder is less than 2.0 .mu.m. The green sheet of zirconium oxide has a thickness of 50 to 300 .mu.m. The heater base is made of a green sheet of aluminum oxide consisting of aluminum oxide powder having an average particle diameter of less than 1.0 .mu.m and 0 to 10 parts by weight of zirconium oxide or yttria-stabilized zirconium oxide. The green sheet of aluminum oxide is at least 4 times the thickness of the green sheet of zirconium oxide. To complete the oxygen sensor, these four components are sintered together at 1300.degree. to 1600.degree. C. to be integrated.

摘要翻译： 测量电极和参考板分别形成在电解板的前表面和后表面上。 通风板设有排气通道。 加热器基座包括加热元件。 电解板由5〜7摩尔％的Y 2 O 3和0〜5重量份的氧化铝构成的氧化锆的生片构成。 氧化锆粉末的平均粒径小于2.0μm。 生坯的氧化锆片的厚度为50〜300μm。 加热器基座由平均粒径小于1.0μm的氧化铝粉末和氧化锆或氧化钇稳定的氧化锆为0〜10重量份的氧化铝生坯片构成。 氧化铝的生片是氧化锆生片的厚度的至少4倍。 为了完成氧传感器，将这四种组分在1300℃至1600℃下烧结在一起以进行整合。

公开(公告)号：US4328294A

公开(公告)日：1982-05-04

申请号：US231842

申请日：1981-02-05

申请人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Katsuhiko Tanaka ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： C04B35/48 ,  C04B35/486 ,  G01N27/407 ,  H01M8/12 ,  H01M6/18

CPC分类号： G01N27/4073 ,  C04B35/486 ,  H01M8/1253 ,  Y02E60/525 ,  Y02P70/56

摘要： A solid electrolyte for an oxygen concentration sensor is provided by mixing ZrO.sub.2 and about 6.5 to about 8% by mol of a stabilizer such as Y.sub.2 O.sub.3, grinding the mixture to give a BET specific surface area of about 9 to 20 m.sup.2 /g, adding to the ground mixture a forming aid, forming the mixture into a predetermined configuration and firing the formed mixture at about 1420.degree. to 1570.degree. C. The electrolyte has a surface-average grain size of about 5 microns or less and a structure of a cubic phase alone at the surface thereof and, furthermore, may contain about 5% or less of a monoclinic phase per the total of the cubic and monoclinic phases, in a finely ground state.

摘要翻译： 通过将ZrO 2和约6.5至约8摩尔％的稳定剂如Y 2 O 3混合来提供氧浓度传感器的固体电解质，研磨该混合物以得到约9至20m 2 / g的BET比表面积， 研磨的混合物形成助剂，将混合物形成预定的构型并在约1420℃至1570℃下焙烧形成的混合物。电解质的表面平均粒度为约5微米或更小，立方相的结构 单独在其表面，并且此外，可以在细磨的状态下每立方和单斜相的总量含有约5％或更少的单斜晶相。

公开(公告)号：US06805782B2

公开(公告)日：2004-10-19

申请号：US09820819

申请日：2001-03-30

申请人： Akio Tanaka ,  Toshitaka Saito ,  Akira Miyashita ,  Keigo Mizutani

发明人： Akio Tanaka ,  Toshitaka Saito ,  Akira Miyashita ,  Keigo Mizutani

IPC分类号： G01N27407

CPC分类号： G01N27/419

摘要： In order to raise accuracy of measurement, a compound layered type of sensing device is provided. The device comprises a plurality of solid electrolyte plates and first to third electrochemical cells. Each cell has a single pair of electrodes disposed on the solid electrolyte plates. A concentration of a gas specified from a gas to be measured pre-processed based on oxygen pumping by the first electrochemical cell is detected by the second electrochemical cell. A difference in electromotive force between the gas to be measured and a reference gas is detected by the third electrochemical cell. The single pair of electrodes of the third electrochemical cell is disposed on the same surface of one of the solid electrolyte plates, and both of the first and third electrochemical cells are located with different ones of the solid electrolyte plates.

摘要翻译： 为了提高测量精度，提供了一种复合分层型感测装置。 该装置包括多个固体电解质板和第一至第三电化学电池。 每个电池具有设置在固体电解质板上的单对电极。 通过第二电化学电池检测由基于第一电化学电池的氧气泵送预先处理的待测气体指定的气体浓度。 通过第三电化学电池检测被测气体与参考气体之间的电动势差。 第三电化学电池的单对电极设置在固体电解质板之一的相同表面上，并且第一和第三电化学电池都位于不同的固体电解质板中。

公开(公告)号：US06607643B2

公开(公告)日：2003-08-19

申请号：US09794069

申请日：2001-02-28

申请人： Hideaki Takahashi ,  Keiichi Saji ,  Jiro Sakata ,  Tadashi Inaba ,  Tadashi Nakamura ,  Yumi Masuoka ,  Toshitaka Saito ,  Akio Tanaka

发明人： Hideaki Takahashi ,  Keiichi Saji ,  Jiro Sakata ,  Tadashi Inaba ,  Tadashi Nakamura ,  Yumi Masuoka ,  Toshitaka Saito ,  Akio Tanaka

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N33/0037 ,  Y02A50/245

摘要： A NOx gas detecting apparatus including an oxygen pumping cell for removing oxygen from a measurement gas, and a NOx detecting cell positioned downstream from the oxygen pumping cell to detect concentration of NOx in the measurement gas, the NOx detecting cell being configured to measure current which flows when oxygen generated from reducing NOx is pumped, wherein the NOx detecting cell has a NOx detecting cathode made of an electrode material including at least one alloy selected from the group consisting of a Pt-Pd alloy, a Pt-Au-Pd alloy, and a Pt-Pd-Rh alloy.

摘要翻译： 一种NOx气体检测装置，其包括用于从测量气体中除氧的氧气泵浦单元，以及位于所述氧气泵浦单元下游的NOx检测单元，以检测所述测量气体中的NOx浓度，所述NOx检测单元被配置为测量 在从还原NOx产生的氧气被泵送时流动，其中，所述NOx检测单元具有由电极材料制成的NOx检测阴极，所述电极材料包括选自由Pt-Pd合金，Pt-Au-Pd合金， 和Pt-Pd-Rh合金。

公开(公告)号：US06580280B2

公开(公告)日：2003-06-17

申请号：US10002132

申请日：2001-12-05

申请人： Makato Nakae ,  Syuichi Nakano ,  Toshitaka Saito

发明人： Makato Nakae ,  Syuichi Nakano ,  Toshitaka Saito

IPC分类号： G01R2708

CPC分类号： G01N27/407

摘要： An exhaust gas side electrode is provided on one surface of a solid electrolytic substrate. A reference gas side electrode is provided on an opposite surface of the solid electrolytic substrate so as to be exposed to a reference gas stored in a reference gas chamber. Each lead of the electrode is connected to a signal output terminal. This sensor satisfies a relationship B/A

摘要翻译： 排气侧电极设置在固体电解质基板的一个表面上。 参考气体侧电极设置在固体电解质基板的相对表面上，以暴露于存储在参考气体室中的参考气体。 电极的每个引线连接到信号输出端子。 该传感器满足B / A <0.5的关系，其中“A”表示在传感器启动状态下包括固体电解质基板，电极及其引线的电路的总电阻值，而“B”表示电阻值 的引线在室温下。 一些实施例可以被布置成使得至少一个引线具有位于电极附近的低电阻部分和位于信号输出端子附近的高电阻部分。 例如，与远离电极的位置处的每单位长度的电阻相比，至少一个引线在电极附近的每单位长度的电阻可以更小。

公开(公告)号：US06254926B1

公开(公告)日：2001-07-03

申请号：US09360147

申请日：1999-07-26

申请人： Toru Katafuchi ,  Kiyomi Kobayashi ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito

发明人： Toru Katafuchi ,  Kiyomi Kobayashi ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito

IPC分类号： B05D512

CPC分类号： G01N27/4075

摘要： An oxygen sensor element includes a solid electrolyte having cavities on a surface thereof and an electrode formed on the surface of the solid electrolyte. In a method of producing the oxygen sensor element, a solution containing a noble metal compound for nucleus formation is first applied to an electrode forming portion of the solid electrolyte to form a coating film. Then, the coating film is heat-treated to form a nucleus forming portion where noble metal nuclei are deposited. Subsequently, metal plating is applied to the nucleus forming portion to form a plating film deeply entering the cavities. Thereafter, the plating film is burned to form the electrode deeply entering the cavities.

摘要翻译： 氧传感器元件包括在其表面上具有空腔的固体电解质和形成在固体电解质表面上的电极。 在制造氧传感器元件的方法中，首先将含有形成核的贵金属化合物的溶液施加到固体电解质的电极形成部分以形成涂膜。 然后，对涂膜进行热处理，形成析出贵金属核的成核部。 随后，对核形成部分施加金属电镀以形成深入到空腔中的镀膜。 此后，电镀膜被燃烧以形成深入空腔的电极。

公开(公告)号：US4908119A

公开(公告)日：1990-03-13

申请号：US91964

申请日：1987-09-01

申请人： Toshitaka Saito ,  Hiromi Sano ,  Soji Ota ,  Syohei Udo

发明人： Toshitaka Saito ,  Hiromi Sano ,  Soji Ota ,  Syohei Udo

IPC分类号： G01N27/406 ,  G01N27/407 ,  G01N27/416

CPC分类号： G01N27/4077 ,  G01N27/4067

摘要： Outer air serving as a reference gas for determining oxygen concentration is guided to a hollow portion of a core. The core is formed in an insulating cylinder whose distal end is closed and whose proximal end is open to receive the reference gas. An opening is formed on the outer surface of the core, to communicate with the hollow portion. An oxygen concentration sensor element made of a solid-state electrolyte layer having first and second electrode layers one on each surface thereof is mounted such that it closes the opening. A sheet member made of an insulating sheet is wound around the sensor element mounted on the sensor element, and is fixed thereon. A window is formed in the sheet so as to expose the surface of the sensor element. A heater is formed around the window. Wiring layers respectively connected to both terminals of the heater are formed on the sheet. Wiring layers adapted to contact the first and second electrode layers of the sensor element are also formed on the sheet. The four wiring layers are respectively guided to grooves formed in the outer surface of the proximal end of the core. A protective layer in the form of a porous insulator is formed on the outer surface of the sheet member.

摘要翻译： 作为用于测定氧浓度的参考气体的外部空气被引导到芯的中空部分。 芯体形成在绝缘筒体中，其绝缘体的顶端封闭，其近端开口以接收参考气体。 在芯的外表面上形成有与中空部连通的开口。 由固体电解质层制成的氧浓度传感器元件，其在其每个表面上具有第一和第二电极层，以使其闭合开口。 由绝缘片制成的薄片构件缠绕在安装在传感器元件上的传感器元件上并固定在其上。 在片材中形成窗口以露出传感器元件的表面。 在窗户周围形成加热器。 分别连接到加热器的两个端子的接线层形成在片材上。 适于接触传感器元件的第一和第二电极层的接线层也形成在片材上。 四个布线层分别被引导到形成在芯的近端的外表面中的凹槽。 在片材的外表面上形成多孔绝缘体形式的保护层。

公开(公告)号：US4476008A

公开(公告)日：1984-10-09

申请号：US541001

申请日：1983-10-11

申请人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Masahiro Shibata ,  Toshitaka Saito ,  Mitihiro Yamakawa

发明人： Hiromi Sano ,  Masatoshi Suzuki ,  Masaya Fujimoto ,  Masahiro Shibata ,  Toshitaka Saito ,  Mitihiro Yamakawa

IPC分类号： G01N27/41 ,  B05D1/12 ,  G01N27/407 ,  G01N27/409 ,  G01N27/58

CPC分类号： G01N27/4075 ,  G01N27/407

摘要： An oxygen gas concentration-sensing device comprises a solid electrolyte body which is prepared from an oxygen ion-permeable metal oxide and whose first surface is exposed to the gas to be sensed and the second surface is exposed to a reference gas. First and second electrodes are respectively pressed against the first and second surface of the solid electrolyte body. The first electrode exposed to the gas is covered with a porous gas diffusion-resisting layer. This gas diffusion-resisting layer is chosen to have an average pore-size ranging from 300 .ANG. to 400 .ANG..

摘要翻译： 氧气浓度检测装置包括由氧离子可透过金属氧化物制备的固体电解质体，其第一表面暴露于待检测气体，第二表面暴露于参考气体。 第一和第二电极分别压靠固体电解质体的第一和第二表面。 暴露于气体的第一电极被多孔气体扩散阻挡层覆盖。 选择该气体扩散阻隔层具有范围从300安培到400安培的平均孔径。

公开(公告)号：US06994780B2

公开(公告)日：2006-02-07

申请号：US10234248

申请日：2002-09-05

申请人： Keigo Mizutani ,  Kazunori Suzuki ,  Toshitaka Saito ,  Daisuke Makino

发明人： Keigo Mizutani ,  Kazunori Suzuki ,  Toshitaka Saito ,  Daisuke Makino

IPC分类号： G01N27/407

CPC分类号： G01N27/419

摘要： A gas sensor includes a measurement gas chamber into which a measurement gas is introduced. An oxygen pumping cell adjusts an oxygen concentration in the measurement gas chamber. An oxygen monitor cell has a monitor electrode exposed in the measurement gas chamber. The monitor electrode has an oxidizing activity with respect to a specific component of the measurement gas. A sensor cell has a sensor electrode exposed in the measurement gas chamber. The sensor electrode has an oxidizing activity with respect to the specific component of the measurement gas which is lower than the oxidizing activity of the monitor electrode. An oxygen-ion current in the oxygen monitor cell is detected. An oxygen-ion current in the sensor cell is detected. A concentration of the specific component of the measurement gas is detected from a relation between the detected oxygen-ion currents in the oxygen monitor cell and the sensor cell.

公开(公告)号：US06554983B2

公开(公告)日：2003-04-29

申请号：US09810180

申请日：2001-03-19

申请人： Hiroo Imamura ,  Toshitaka Saito ,  Keigo Mizutani ,  Daisuke Makino

发明人： Hiroo Imamura ,  Toshitaka Saito ,  Keigo Mizutani ,  Daisuke Makino

IPC分类号： G01N27407

CPC分类号： G01N27/419

摘要： An objective gas is successively introduced into first and second chambers which are connected via a narrow passage. A first monitor cell, provided on a surface of the first chamber, generates an electromotive force representing an oxygen concentration in the first chamber. A second monitor cell, provided on a surface of the second chamber, generates an electromotive force representing an oxygen concentration in the second chamber. A voltage applied to a pump cell is controlled based on the electromotive forces obtained from the first and second monitor cells.