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    Oxygen concentration detector having heat-treated support layer providing high responsivity endurance
    11.
    发明授权
    Oxygen concentration detector having heat-treated support layer providing high responsivity endurance 失效
    具有热处理支撑层的氧浓度检测器提供高响应能力

    公开(公告)号：US5472591A

    公开(公告)日：1995-12-05

    申请号：US305712

    申请日：1994-09-14

    申请人： Toshitaka Saito ,  Namitsugu Fujii ,  Yasumichi Hotta ,  Satoru Nomura ,  Hiromi Sano ,  Masatoshi Suzuki

    发明人： Toshitaka Saito ,  Namitsugu Fujii ,  Yasumichi Hotta ,  Satoru Nomura ,  Hiromi Sano ,  Masatoshi Suzuki

    IPC分类号： G01N27/409 ,  G01N27/407

    CPC分类号： G01N27/4075

    摘要： An oxygen concentration detector provides high durability by increasing the thermal stability of coating layers applied to an electrode face thereof. A catalyst layer is formed on an outer surface of an electrode at the analysis gas side of a partition wall made of an ion oxygen conductive ceramic for generating electromotive force according to the difference between the concentration of oxygen in the analysis gas and the concentration of oxygen in the reference gas. The catalyst layer is composed of heat resistant ceramic particles and a particulate metallic catalyst made of platinum, rhodium or the like, supported by the surface of the heat resistant ceramic particles. The catalyst layer is formed so that the catalyst is supported by the heat resistant support particles. The support particles are heat treated to grow to a particle size so that particle growth can be restrained when the support particles are exposed to the exhaust gas from an internal combustion engine. The outside of the electrode of the partition wall is covered with support particles having such heat treated large cohered catalyst particles, and good responsivity of the sensor is thereby maintained.

    摘要翻译： 氧浓度检测器通过增加施加到其电极面上的涂层的热稳定性而提供高耐久性。 催化剂层形成在由离子氧传导陶瓷制成的分隔壁的分析气体侧的电极的外表面上，用于根据分析气体中的氧浓度与氧浓度之间的差产生电动势 在参考气体中。 催化剂层由耐热陶瓷颗粒和由耐热陶瓷颗粒的表面支撑的由铂，铑等制成的颗粒状金属催化剂组成。 催化剂层形成为使得催化剂被耐热支撑颗粒支撑。 支撑颗粒被热处理以生长成粒径，使得当载体颗粒暴露于来自内燃机的废气时，可以抑制颗粒生长。 分隔壁的电极的外侧覆盖有具有这种经热处理的大型粘结催化剂颗粒的支撑颗粒，从而保持传感器的良好的响应性。

    Oxygen concentration sensor
    12.
    发明授权
    Oxygen concentration sensor 失效
    氧浓度传感器

    公开(公告)号：US5421984A

    公开(公告)日：1995-06-06

    申请号：US184141

    申请日：1994-01-21

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

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

    IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/26

    CPC分类号： G01N27/4071 ,  G01N27/4075

    摘要： This invention aims at providing an oxygen concentration sensor having electrodes which are excellent in heat resistance and durability and maintain quick response. An electrode 26 on an exhaust side is formed on one of the side surfaces of a solid electrolyte 25, and an electrode 24 on an atmosphere side is formed on the other side surface. The electrode 26 on the exhaust side has a composite structure comprising a skeletal electrode 26a and a reaction electrode 26a. The skeletal electrode 26a has a film thickness of 5 to 20 .mu.m and a porosity of less than 10%, and is a heat-resistant thick film for primarily forming a skeletal region. In contrast, the reaction electrode 26b has a film thickness of 0.5 to 2 .mu.m and a porosity of 10 to 50%, and is a high response thin film for primarily forming a reaction region.

    摘要翻译： 本发明的目的在于提供一种具有耐热性和耐久性优异且保持快速反应的电极的氧浓度传感器。 在固体电解质25的一个侧面上形成排气侧的电极26，在另一个侧面上形成有气氛侧的电极24。 排气侧的电极26具有包括骨架电极26a和反应电极26a的复合结构体。 骨架电极26a的膜厚为5〜20μm，孔隙率小于10％，是用于主要形成骨架区域的耐热厚膜。 相反，反应电极26b的膜厚为0.5〜2μm，孔隙率为10〜50％，是用于主要形成反应区域的高反应性薄膜。

    Oxygen analyzer
    13.
    发明授权
    Oxygen analyzer 失效
    氧气分析仪

    公开(公告)号：US4402820A

    公开(公告)日：1983-09-06

    申请号：US403045

    申请日：1982-07-29

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

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

    IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/56 ,  G01N27/58

    CPC分类号： G01N27/4075 ,  G01N27/4077

    摘要： A limiting current type oxygen analyzer designed for detecting oxygen concentration comprising a solid electrolyte element made from an oxygen ion conductive metal oxide and a pair of porous film electrodes provided on the inner and outer sides of said element respectively, at least one side electrodes being coated with a gas-diffusive resistive layer made from a porous insulating metal oxide, wherein the oxygen ions in the gas to which said element is exposed are caused to diffuse in the inside of said electrolyte element by applying a given voltage across said both electrodes and the limiting current corresponding to the concentration of said diffused oxygen ions is measured to determine the oxygen concentration in the gas to be analyzed, further characterized in that said gas-diffusive resistive layer is composed of a three-layer structure consisting of the first, second and third layers counted from the electrode side, said first layer having porosity of 11-15%, the second layer 6-8% and the third layer 15-20%.

    摘要翻译： 设置用于检测氧浓度的极限电流型氧分析器，其包含由氧离子导电金属氧化物制成的固体电解质元件和分别设置在所述元件的内侧和外侧上的一对多孔膜电极，至少一个侧电极被涂覆 具有由多孔绝缘金属氧化物制成的气体扩散电阻层，其中使所述元件暴露的气体中的氧离子在所述电解质元件的内部通过施加给定的电压跨所述两个电极而扩散，并且 测量对应于所述扩散的氧离子的浓度的极限电流，以确定待分析气体中的氧浓度，其特征还在于所述气体扩散电阻层由三层结构组成，所述三层结构由第一，第二和第 从电极侧计数第三层，所述第一层具有11-15％的孔隙率，第二层6- 8％，第三层15-20％。

    Oxygen sensor
    17.
    发明授权
    Oxygen sensor 失效
    氧传感器

    公开(公告)号：US4220516A

    公开(公告)日：1980-09-02

    申请号：US1354

    申请日：1979-01-04

    申请人： Hiromi Sano ,  Masatoshi Suzuki

    发明人： Hiromi Sano ,  Masatoshi Suzuki

    IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/58

    CPC分类号： G01N27/4075

    摘要： An oxygen sensor having an oxygen-ion-conductive element made of a metal oxide with an outer electrode composed of three layers, one of which is the thinnest, second of which is the intermediate in thickness and the third of which is the thickest. This oxygen sensor maintains quick response characteristics over a long period of time.

    摘要翻译： 一种氧传感器，其具有由金属氧化物制成的氧离子传导元件，外部电极由三层组成，其中一层最薄，其中第二层为中间层，第三层最厚。 该氧传感器在长时间内保持快速响应特性。

    Gas sensor element with lead-proof effect
    18.
    发明授权
    Gas sensor element with lead-proof effect 失效
    气体传感器元件具有防铅效果

    公开(公告)号：US06409899B1

    公开(公告)日：2002-06-25

    申请号：US09511079

    申请日：2000-02-23

    申请人： Motoaki Satou ,  Yasumichi Hotta ,  Namitsugu Fujii ,  Hiromi Sano

    发明人： Motoaki Satou ,  Yasumichi Hotta ,  Namitsugu Fujii ,  Hiromi Sano

    IPC分类号： G01N27407

    CPC分类号： G01N27/4077

    摘要： A sensor element has a solid electrolyte body holding a reference gas side electrode and a measurement gas side electrode on surfaces thereof. The measurement gas side electrode is covered with a porous protective layer including a component as a lead getter, which reacts with lead contained in measurement gas. Accordingly, lead is removed from measurement gas by the protective layer not to be attached to the measurement gas side electrode. As a result, the sensor element can be used in measurement gas containing lead, without deteriorating responsibility and output thereof.

    摘要翻译： 传感器元件具有在其表面上保持参考气体侧电极和测量气体侧电极的固体电解质体。 测量气体侧电极被多孔保护层覆盖，该多孔保护层包括与测量气体中所含的铅反应的作为引线吸气剂的部件。 因此，通过不附接到测量气体侧电极的保护层将铅从测量气体中除去。 结果，传感器元件可以用于含铅的测量气体中，而不会降低其责任和输出。

    Air-fuel ratio sensing element
    19.
    发明授权
    Air-fuel ratio sensing element 失效
    空燃比传感元件

    公开(公告)号：US5811660A

    公开(公告)日：1998-09-22

    申请号：US748826

    申请日：1996-11-14

    申请人： Syuichi Nakano ,  Tomio Sugiyama ,  Shinichiro Imamura ,  Hiromi Sano

    发明人： Syuichi Nakano ,  Tomio Sugiyama ,  Shinichiro Imamura ,  Hiromi Sano

    IPC分类号： G01N27/419 ,  G01M15/00

    CPC分类号： G01N27/419

    摘要： An air-fuel ratio sensing element comprises a pump cell having at least one pair of pump electrodes thereon, a sensor cell having at least one pair of sensor electrodes thereon, and a gas chamber having two surfaces defined by the pump cell and the sensor cell. Two to five gas holes, each having approximately the same diameter and communicating with the gas chamber, are provided for introducing sensed gas into the gas chamber. The gas holes form their projection images on the surface of the sensor cell which has a sensor electrode thereon and faces the gas chamber. The sensor electrode is shaped such that it is dividable into a plurality of similar subsections defined by virtual lines connecting the geometric centroid of the sensor electrode and the center of the projection image of each gas hole.

    摘要翻译： 空燃比传感元件包括其上具有至少一对泵电极的泵电池，其上具有至少一对传感器电极的传感器单元和具有由泵电池和传感器单元限定的两个表面的气室 。 设置两个至五个气孔，每个气孔具有大致相同的直径并与气室连通，用于将检测到的气体引入气室。 气孔在其上具有传感器电极并且面对气室的传感器单元的表面上形成其投影图像。 传感器电极被成形为使得其可分割成由连接传感器电极的几何质心和每个气孔的投影图像的中心的虚拟线限定的多个相似的子部分。

    Air-fuel ratio detecting device
    20.
    发明授权
    Air-fuel ratio detecting device 失效
    空燃比检测装置

    公开(公告)号：US5676811A

    公开(公告)日：1997-10-14

    申请号：US789709

    申请日：1997-01-27

    申请人： Daisuke Makino ,  Hisayoshi Ohta ,  Keigo Mizutani ,  Masataka Naito ,  Masanori Yamada ,  Masahiro Shibata ,  Hiromi Sano

    发明人： Daisuke Makino ,  Hisayoshi Ohta ,  Keigo Mizutani ,  Masataka Naito ,  Masanori Yamada ,  Masahiro Shibata ,  Hiromi Sano

    IPC分类号： G01N27/419 ,  G01N27/26

    CPC分类号： G01N27/419

    摘要： An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode. By disposing the oxygen pump portion and the oxygen sensor portion on the same solid electrolyte sheet, structure can be made simpler compared with a conventional air-fuel ratio detecting element in which a solid electrolyte sheet is used for each of an oxygen pump portion and an oxygen sensor portion.

    摘要翻译： 空燃比检测元件由设置在单个固体电解质片，加热元件和间隔件上的氧泵部分和氧传感器部分组成。 氧泵部由设置在固体电解质片的相对侧上的一对电极和通过固体电解质片和电极形成的连通孔构成。 电极与第二电极位于同一侧的固体电解质片上，形成氧传感器部。 间隔件具有开口和狭缝状开口。 从底部到顶部堆叠加热元件4，间隔件和固体电解质片，然后烘烤堆叠的组件。 在这种情况下，它们堆叠成使得开口面向第一电极和第二电极。 通过将氧泵部和氧传感器部配置在相同的固体电解质片上，与以往的空氧燃料比检测元件相比，可以使结构更简单，其中使用固体电解质片作为氧泵部和 氧传感器部分。