公开(公告)号：US06174489B1

公开(公告)日：2001-01-16

申请号：US09140422

申请日：1998-08-26

申请人： Kiyomi Kobayashi ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Namitsugu Fujii

发明人： Kiyomi Kobayashi ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Namitsugu Fujii

IPC分类号： C07B3332

CPC分类号： G01N27/4073

摘要： A method for manufacturing an oxygen sensor unit of the type which includes at least a shaped body of a solid electrolyte, an inner electrode provided on an inside surface of the shaped body and exposed to a reference gas, an outer electrode provided on an outside surface of the shaped body and exposed to a gas to be measured, and a porous protective layer covering the outer electrode and a portion of the shaped body adjoining to said outer electrode wherein the solid electrolyte is made of a mixture of zirconia and a stabilizer therefor and is constituted of a sintered product of partially stabilized zirconia. The method is characterized in that the partially stabilized, sintered zirconia is obtained according to a high temperature sintering process which includes at least the step of sintering the mixture at a temperature of 1200° C. or over for a duration of 2 to 6 hours wherein a value obtained by integrating a variation in the sintering temperature with the duration in the sintering process is in the range of 300 to 1500° C.·hour.

摘要翻译： 一种制造氧传感器单元的方法，该氧传感器单元至少包括固体电解质的成形体，设置在成形体的内表面上并暴露于参考气体的内电极，设置在外表面上的外电极 并暴露于要测量的气体，以及覆盖外电极的多孔保护层和与所述外电极相邻的成形体的一部分，其中固体电解质由氧化锆及其稳定剂的混合物制成， 由部分稳定化的氧化锆的烧结体构成。 该方法的特征在于，部分稳定的烧结氧化锆根据高温烧结方法获得，其至少包括在1200℃或更高温度下烧结混合物2至6小时的步骤，其中 通过将烧结温度的变化与烧结过程中的持续时间相结合而获得的值在300〜1500℃的范围内。

公开(公告)号：US5707503A

公开(公告)日：1998-01-13

申请号：US549209

申请日：1995-10-27

申请人： Yasumichi Hotta ,  Hiromi Sano ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Naoto Miwa

发明人： Yasumichi Hotta ,  Hiromi Sano ,  Toshitaka Saito ,  Masatoshi Suzuki ,  Naoto Miwa

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

CPC分类号： G01N27/4075

摘要： According to the present invention, an oxygen sensor element includes a solid electrolyte having a side surface at one side thereof, the side surface being contactable with a gas to be measured, a skeletal electrode provided on the side surface and having a plurality of pore portions, each of the pore portions passing through the skeletal electrode up to the solid electrolyte, and a reactive electrode made of a porous film and provided in each of the pore portions, a thickness of the porous film being smaller than that of said skeletal electrode. An area percentage (SH/SZ) which is a ratio of a total area (SH) of the reactive electrode to a total area (SZ) of the skeletal electrode and the reactive electrode is in a range from 10 to 50%, an average area (SA) of the pore portions is 100 .mu.m.sup.2 or less, a film thickness of the skeletal electrode is in a range from 1.5 to 4 .mu.m, and the film thickness of the reactive electrode is in a range from 0.6 to 1.5 .mu.m. The oxygen sensor element is superior in the heat resistance characteristics and the response characteristics.

摘要翻译： 根据本发明，氧传感器元件包括固体电解质，其一侧具有侧表面，侧表面可与待测气体接触，骨架电极设置在侧表面上并具有多个孔部分 每个孔部分通过骨架电极直到固体电解质，以及由多孔膜制成的反应性电极，并设置在每个孔部分中，多孔膜的厚度小于所述骨架电极的厚度。 作为骨架电极和反应性电极的反应电极的总面积（SH）与总面积（SZ）的比的面积百分比（SH / SZ）在10〜50％的范围内，平均 孔部的面积（SA）为100μm以下，骨架电极的膜厚在1.5〜4μm的范围内，反应电极的膜厚在0.6〜1.5μm的范围内 m。 氧传感器元件的耐热特性和响应特性优异。

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。

公开(公告)号：US6110348A

公开(公告)日：2000-08-29

申请号：US92647

申请日：1998-06-09

申请人： Tomio Sugiyama ,  Naoto Miwa ,  Masahiro Shibata, deceased ,  Hiromi Sano

发明人： Tomio Sugiyama ,  Naoto Miwa ,  Masahiro Shibata, deceased ,  Hiromi Sano

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

CPC分类号： G01N27/407

摘要： A main body of a NOx sensor has a sensor cell and defines a reference gas chamber and a sample gas chamber therein. The sample gas chamber has a wall formed by a solid electrolytic substrate having an oxygen ion conductivity. The sensor cell is disposed between the reference gas chamber and the sample gas chamber for detecting a concentration of a NOx gas. A pump cell body of the NOx sensor has a surface facing to the sample gas chamber and has a pump cell for introducing and exhausting an oxygen gas to and from the sample gas chamber. In manufacturing this NOx sensor, the main body and the pump cell body are fabricated individually as separate items. The main body and the pump cell body are sintered independently. Then, the main body and the pump cell body are assembled into to the NOx sensor.

摘要翻译： NOx传感器的主体具有传感器单元并且在其中限定了参考气体室和样品气体室。 样品气室具有由具有氧离子传导性的固体电解质基材形成的壁。 传感器单元设置在参考气体室和样本气体室之间，用于检测NOx气体的浓度。 NOx传感器的泵电池体具有面向样品气体室的表面，并且具有用于将氧气引入和排出到样品气体室的泵室。 在制造该NOx传感器时，主体和泵电池体单独制造成单独的物品。 主体和泵电池体独立烧结。 然后，将主体和泵电池体组装到NOx传感器中。

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：US07824531B2

公开(公告)日：2010-11-02

申请号：US09098730

申请日：1998-06-18

申请人： Tomio Sugiyama ,  Hiromi Sano ,  Masahiro Shibata ,  Midori Shibata, legal representative ,  Natsumi Shibata, legal representative ,  Raina Shibata, legal representative ,  Syuichi Nakano

发明人： Tomio Sugiyama ,  Hiromi Sano ,  Masahiro Shibata ,  Syuichi Nakano

IPC分类号： G01N27/406

CPC分类号： G01N27/419

摘要： A multilayered air-fuel ratio sensor consists of a plurality of substrate layers. At least one heterogeneous boundary layer is interposed between the plurality of substrate layers. The heterogeneous boundary layer has a thickness in a range of 10 to 100 μm. The heterogeneous boundary layer absorbs thermal shocks or any other stresses acting on the substrate layers and stops the growth of cracks.

摘要翻译： 多层空燃比传感器由多个基板层构成。 至少一个不均匀的边界层介于多个基底层之间。 异质边界层的厚度在10〜100μm的范围内。 异质边界层吸收热冲击或作用在基底层上的任何其他应力，并阻止裂纹的生长。

公开(公告)号：US6055972A

公开(公告)日：2000-05-02

申请号：US886063

申请日：1997-06-30

申请人： Masaya Fujimoto ,  Minoru Ohta ,  Makoto Nakae ,  Isao Watanabe ,  Naoto Miwa ,  Hiromi Sano ,  Masahiro Shibata

发明人： Masaya Fujimoto ,  Minoru Ohta ,  Makoto Nakae ,  Isao Watanabe ,  Naoto Miwa ,  Hiromi Sano ,  Masahiro Shibata

IPC分类号： G01N27/406 ,  G01N27/416 ,  F02D41/30

CPC分类号： G01N27/4067

摘要： An air-fuel ratio sensor of a limit current type is used for an air-fuel ratio feedback control. When the air-fuel ratio sensor is in a semi-activated state, the air-fuel ratio sensor is driven into an electromotive force generating mode by a current externally applied thereto thereby to shift an electromotive force changing point so that an air-fuel ratio at which the electromotive force changes stepwisely is shifted from the stoichiometric ratio point to a lean zone. When the air-fuel ratio sensor is in a completely activated state, the air-fuel ratio sensor is applied with a voltage to produce a limit current varying with an air-fuel ratio so that a feedback control is performed based on the advanced control theory by using a linear current output characteristics.

摘要翻译： 用于空燃比反馈控制的极限电流型的空燃比传感器。 当空燃比传感器处于半激活状态时，通过外部施加的电流将空燃比传感器驱动成电动势产生模式，从而使电动势变化点移动，使得空燃比传感器的空燃比 电动势逐步变化的位置从化学计量比点偏移到贫带。 当空燃比传感器处于完全启动状态时，空燃比传感器被施加电压以产生随空燃比变化的极限电流，从而基于先进控制理论进行反馈控制 通过使用线性电流输出特性。

公开(公告)号：US06332965B1

公开(公告)日：2001-12-25

申请号：US09100230

申请日：1998-06-19

申请人： Tomio Sugiyama ,  Naoto Miwa ,  Masahiro Shibata ,  Hiromi Sano ,  Akio Tanaka

发明人： Tomio Sugiyama ,  Naoto Miwa ,  Masahiro Shibata ,  Hiromi Sano ,  Akio Tanaka

IPC分类号： G01N2726

CPC分类号： G01N27/419

摘要： A composite gas sensor comprises a pump cell, a NOx sensor cell and an oxygen sensor cell. The NOx sensor cell is connected to a first ammeter and a constant power source to measure the NOx concentration of a sample gas. The pump cell is connected to a second ammeter and a variable power source to measure an air-fuel ratio of the sample gas. The oxygen sensor cell is connected to a voltmeter. A controller adjusts the variable power source to produce a constant value from the voltmeter.

摘要翻译： 复合气体传感器包括泵电池，NOx传感器单元和氧传感器单元。 NOx传感器单元连接到第一电流表和恒定电源，以测量样品气体的NOx浓度。 泵单元连接到第二电流表和可变电源，以测量样气的空燃比。 氧传感器电池连接到电压表。 控制器调节可变电源以从电压表产生一个恒定的值。

公开(公告)号：US06258233B1

公开(公告)日：2001-07-10

申请号：US09237918

申请日：1999-01-27

申请人： Tomio Sugiyama ,  Masahiro Shibata ,  Hiromi Sano

发明人： Tomio Sugiyama ,  Masahiro Shibata ,  Hiromi Sano

IPC分类号： G01N27409

CPC分类号： G01N27/4073

摘要： A multilayered air-fuel ratio sensing element has a zirconic solid electrolytic body and a heat-generating portion including an alumina substrate located adjacent to the zirconic solid electrolytic body. The zirconic solid electrolytic body is made of a partially stabilized zirconia containing 5˜7 mol % yttria and having a mixed phase structure including a cubic phase, a monoclinic phase and a tetragonal phase. The zirconic solid electrolytic body has a relative density of 94˜100% with a mean sintered grain size RZR of 0.5˜3.0 &mgr;m. The alumina substrate has a relative density of 95˜100% with a mean sintered grain size RAL of 0.5˜4.0 &mgr;m. And, the partially stabilized zirconia has an M/C ratio in a range from 0.05 to 0.25.

摘要翻译： 多层空燃比传感元件具有锆固体电解体和发热部，该发热部包括与锆固体电解体相邻的氧化铝基板。 锆固体电解体由含有5〜7摩尔％氧化钇的部分稳定的氧化锆制成，具有立方相，单斜晶相和四方晶相的混合相结构。 锆固体电解质的相对密度为94〜100％，平均烧结粒度RZR为0.5〜3.0μm。 氧化铝基板的相对密度为95〜100％，平均烧结晶粒尺寸RAL为0.5〜4.0μm。 而且，部分稳定的氧化锆的M / C比在0.05-0.25的范围内。

公开(公告)号：US5787866A

公开(公告)日：1998-08-04

申请号：US833801

申请日：1997-04-09

申请人： Tomio Sugiyama ,  Naoto Miwa ,  Hiromi Sano ,  Masahiro Shibata ,  Syuichi Nakano ,  Shinichiro Imamura

发明人： Tomio Sugiyama ,  Naoto Miwa ,  Hiromi Sano ,  Masahiro Shibata ,  Syuichi Nakano ,  Shinichiro Imamura

IPC分类号： G01N27/419 ,  G01N27/407 ,  G01N27/409 ,  B05D5/12

CPC分类号： G01N27/4071

摘要： An air-fuel ratio sensor comprises a platelike oxygen sensing section made of a solid electrolyte and a heater sheet heating the oxygen sensing section. The oxygen sensing section and the heater sheet are stacked via spacers to constitute a multilayer construction. The heater sheet comprises a first platelike insulating sheet chiefly containing at least one component selected from the group consisting of .alpha.-alumina, steatite and mullite, a filmy resistance element disposed on the first insulating sheet and having a resistance-temperature coefficient within a range of 0.5.times.10.sup.3 to 2.0.times.10.sup.3 ppm/.degree.C., and a second platelike insulating sheet covering the resistance element and chiefly containing at least one component selected from the group consisting of .alpha.-alumina, steatite and mullite.

摘要翻译： 空燃比传感器包括由固体电解质制成的板状氧传感部分和加热氧感测部分的加热器片。 氧传感部分和加热片通过间隔物堆叠构成多层结构。 加热片包括主要包含选自α-氧化铝，滑石和莫来石中的至少一种成分的第一板状绝缘片，设置在第一绝缘片上的耐电阻元件，其电阻温度系数在 0.5×10 3〜2.0×10 3 ppm /℃，以及覆盖电阻元件的第二片状绝缘片，主要含有选自α-氧化铝，滑石和莫来石的至少一种成分。