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：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。

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：US5685964A

公开(公告)日：1997-11-11

申请号：US584120

申请日：1996-01-11

申请人： Isao Watanabe ,  Masahiro Shibata ,  Masaya Fujimoto

发明人： Isao Watanabe ,  Masahiro Shibata ,  Masaya Fujimoto

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4071

摘要： a limiting current type oxygen concentration sensor element includes a measured gas side electrode formed at one side of a solid electrolyte, and a diffusion resistance portion formed on the measured gas side electrode to provide diffusion resistance to passing measured gas therein. The diffusion resistance portion includes a concave portion formed at a position at least corresponding to a position of the measured gas side electrode. In the concave portion, a porous trap layer is disposed to trap contamination in measured gas. The side wall of the concave portion contacts with the trap layer. The area of a contact surface becomes larger than that without the concave portion, which can effectively prevent the trap layer from being peeled off and dropping down. The trap layer can be easily made thicker. By changing the depth of the concave portion appropriately, diffusion resistance of the diffusion resistance portion can be easily adjusted.

摘要翻译： 极限电流型氧浓度传感器元件包括形成在固体电解质的一侧的测量气体侧电极和形成在测量气体侧电极上的扩散阻力部分，以向其中测量的气体提供扩散阻力。 扩散阻力部分包括形成在至少对应于所测量的气体侧电极的位置的位置的凹部。 在凹部中设置多孔捕获层以捕获测量气体中的污染物。 凹部的侧壁与捕获层接触。 接触面的面积大于不具有凹部的面积，能够有效地防止捕获层剥离掉。 捕获层可以容易地变厚。 通过适当地改变凹部的深度，可以容易地调整扩散阻力部的扩散阻力。

公开(公告)号：US5298147A

公开(公告)日：1994-03-29

申请号：US888107

申请日：1992-05-26

申请人： Makoto Nakae ,  Masahiro Shibata ,  Yoshiki Chujo

发明人： Makoto Nakae ,  Masahiro Shibata ,  Yoshiki Chujo

IPC分类号： G01N27/419 ,  G01N27/26 ,  G01N27/407 ,  G01N27/41

CPC分类号： G01N27/4071 ,  G01N27/4072

摘要： An oxygen concentration sensor of this invention comprises an element and a diffusion hole. The element is exposed to a gas to be measured and has a chamber portion formed together with an oxygen ion conductive solid electrolyte. The diffusion hole is provided for restricting the flow of said gas to be measured into said chamber portion. Furthermore, the relationship 1.ltoreq.S/(L.multidot.V).ltoreq.5 is established with the diffusion hole having a cross sectional area S (mm.sup.2) and a length L (mm) and the chamber portion having a volume V (mm.sup.3). To do so, the oxygen concentration sensor can provide a stable output even if a pressure of the gas to be measured is abruptly changed.

摘要翻译： 本发明的氧浓度传感器包括元件和扩散孔。 该元件暴露于要测量的气体，并且具有与氧离子导电固体电解质一起形成的室部分。 扩散孔用于限制待测气体流入所述室部分。 此外，扩散孔的横截面积S（mm2）和长度L（mm）建立的关系式1 <= S /（L * V）<= 5，室部的体积V（mm3） 。 为了这样做，即使要测量的气体的压力突然改变，氧浓度传感器也可以提供稳定的输出。

公开(公告)号：US5393397A

公开(公告)日：1995-02-28

申请号：US172222

申请日：1993-12-23

申请人： Tomoji Fukaya ,  Masahiro Shibata ,  Kazunori Suzuki ,  Makoto Nakae ,  Syuichi Nakano ,  Masatoshi Suzuki

发明人： Tomoji Fukaya ,  Masahiro Shibata ,  Kazunori Suzuki ,  Makoto Nakae ,  Syuichi Nakano ,  Masatoshi Suzuki

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/419 ,  G01N27/26

CPC分类号： G01N27/4075

摘要： An oxygen sensor capable of accelerating electrochemical reactions and practically working at a low temperature comprises a solid electrolyte 5, and an outer electrode 31 and an inner electrode 32, provided on the surfaces of the solid electrolyte 5, wherein mixed conductors 11 and 12 capable of adsorbing oxygen molecules and conducting an ionization reaction are provided between the solid electrolyte 5 and the outer electrode 31 and between the solid electrolyte 5 and the inner electrode 32, respectively. The mixed conductors 11 and 12 are porous and have a higher oxygen ion conductivity than that of the solid electrolyte 5 and an electron conductivity substantially equivalent to the oxygen ion conductivity and are made of a fluorite-type oxide or a perovskite-type oxide.

摘要翻译： 能够加速电化学反应并在低温下实际工作的氧传感器包括固体电解质5和设置在固体电解质5的表面上的外电极31和内电极32，其中混合导体11和12能够 分别在固体电解质5和外部电极31之间以及固体电解质5和内部电极32之间分别吸附氧分子并进行电离反应。 混合导体11和12是多孔的，并且具有比固体电解质5更高的氧离子电导率和基本上等于氧离子传导性的电子传导性，并且由萤石型氧化物或钙钛矿型氧化物制成。

公开(公告)号：US5593558A

公开(公告)日：1997-01-14

申请号：US467144

申请日：1995-06-06

申请人： Hiroshi Sugino ,  Yasumichi Hotta ,  Namitsugu Fujii ,  Masahiro Shibata ,  Hiromi Sano

发明人： Hiroshi Sugino ,  Yasumichi Hotta ,  Namitsugu Fujii ,  Masahiro Shibata ,  Hiromi Sano

IPC分类号： G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4075

摘要： An oxygen concentration detector includes a one-end closed cylindrical oxygen sensing element having an inside electrode, outside electrode provided on the inner side and outer side respectively, an electrode protecting layer made up of ceramics porous member provided further outside the outside electrode, and a trap layer 1 of ceramics porous member having a surface roughness of 20 to 100 .mu.m measured according to a 10 point mean roughness measurement and provided outside the electrode protecting layer is employed. By dipping the to-be-detected gas side surface of an oxygen sensing element into a slurry with coarse heat-resisting metal oxide particles, 2 to 50 .mu.m in average grain size, dispersed, depositing the slurry on the surface of a protective layer of an oxygen sensor element, thereafter drying and baking the deposit, a porous poisonous substance trap layer, 10 to 500 .mu.m thick, is formed. The dipping is performed after a previous degassing and strong stirring of said slurry and the stop of stirring.

摘要翻译： 氧浓度检测器包括：一端封闭的圆柱形氧传感元件，其具有内电极，设置在内侧和外侧的外电极，由设置在外电极外侧的陶瓷多孔体构成的电极保护层，以及 使用根据10点平均粗糙度测量测量并设置在电极保护层外侧的表面粗糙度为20至100μm的陶瓷多孔构件的捕获层1。 通过将氧检测元件的待检测气体侧表面浸入具有粗糙的耐热金属氧化物颗粒的浆料中，平均粒径为2至50μm，分散，将浆料沉积在保护层的表面上 的氧传感器元件，然后干燥和烘烤沉积物，形成10至500μm厚的多孔有害物质捕获层。 在先前脱气并强烈搅拌所述浆料并停止搅拌之后进行浸渍。

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：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。