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：US06951601B1

公开(公告)日：2005-10-04

申请号：US08838910

申请日：1997-04-11

申请人： Akio Tanaka ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Kazunori Suzuki ,  Masaya Fujimoto

发明人： Akio Tanaka ,  Naoto Miwa ,  Toshitaka Saito ,  Hiromi Sano ,  Kazunori Suzuki ,  Masaya Fujimoto

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/407 ,  G01N27/409

CPC分类号： G01N27/4075 ,  G01N27/4067

摘要： The oxygen concentration detector of the present invention includes a sensor element having a solid electrolyte and having an external electrode and an internal electrode provided on the external surface and the internal surface, respectively, and a heater provided adjacent to the internal surface of the sensor element, in which a high-emissivity layer consisting of a material having a high emissivity is provided on the internal surface of the sensor element and/or the surface of the heater.

摘要翻译： 本发明的氧浓度检测器具有固体电解质的传感器元件，分别具有设置在外表面和内表面上的外部电极和内部电极，以及设置在传感器元件的内表面附近的加热器 其中在传感器元件的内表面和/或加热器的表面上设置由具有高发射率的材料构成的高发射率层。

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：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：US5900129A

公开(公告)日：1999-05-04

申请号：US659642

申请日：1996-06-06

申请人： Nobuyuki Tsuji ,  Takashi Kojima ,  Isao Watanabe ,  Masahiro Hamaya ,  Minoru Ohta ,  Naoto Miwa

发明人： Nobuyuki Tsuji ,  Takashi Kojima ,  Isao Watanabe ,  Masahiro Hamaya ,  Minoru Ohta ,  Naoto Miwa

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

CPC分类号： G01N27/4078 ,  G01N27/4062 ,  G01N27/407

摘要： An oxygen concentration sensor having excellent sealing performance between a lead wire and a lead wire insertion hole includes a sensor element disposed insertedly into a housing, protective covers disposed at an end portion of the housing, lead wires inserted into the protective covers, and an elastic insulating member disposed inside the protective covers and having a lead wire insertion hole for inserting the lead wires. The lead wire insertion hole in the elastic insulating member has a rib protruding in the radial direction. The elastic insulating member is caulked and fixed by the protective covers.

摘要翻译： 具有导线和引线插入孔之间密封性能优异的氧浓度传感器包括插入壳体中的传感器元件，设置在壳体的端部的保护盖，插入保护盖中的引线和弹性 绝缘构件，其设置在所述保护盖内部并且具有用于插入所述引线的引线插入孔。 弹性绝缘构件中的引线插入孔具有沿径向突出的肋。 弹性绝缘构件被保护罩铆接固定。

公开(公告)号：US5766672A

公开(公告)日：1998-06-16

申请号：US704927

申请日：1996-08-28

申请人： Yasumichi Hotta ,  Hiromi Sano ,  Namitsugu Fujii ,  Naoto Miwa

发明人： Yasumichi Hotta ,  Hiromi Sano ,  Namitsugu Fujii ,  Naoto Miwa

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

CPC分类号： G01N27/4075

摘要： An oxygen concentration detector element 2 includes a cup-shaped solid electrolyte 20 with an inside chamber 25 opened at one end and closed at the other end. An external electrode 21 is formed on an outer surface of solid electrolyte 20 by dipping solid electrolyte 20 in first chemical plating liquid 81, while an internal electrode 22 is formed on an inner surface of solid electrolyte 20 by introducing second chemical plating liquid 82 into inside chamber 25. First, in an injecting step, an injection needle 11 is inserted into inside chamber 25 and second chemical plating liquid 82 is introduced into inside chamber 25 via injection needle 11, and then injection needle 11 is pulled out of inside chamber 25. Next, in a plating step, internal electrode 22 is formed on the inner surface of inside chamber 25 using second chemical plating liquid 82. Then, in a discharging step, residual second chemical plating liquid 82 is discharged from inside chamber 25.

摘要翻译： 氧浓度检测元件2包括杯状固体电解质20，其内侧室25在一端开口并在另一端封闭。 通过在第一化学镀液81中浸渍固体电解质20而在固体电解质20的外表面上形成外部电极21，而在固体电解质20的内表面上形成内部电极22，通过将第二化学镀液82引入到内部电极 首先，在注射步骤中，将注入针11插入内部腔25中，并且将第二化学镀液82经由注射针11引入到内部腔25内，然后将注射针11从内部腔25中拉出。 接着，在电镀工序中，使用第二化学镀液82在内部室25的内表面上形成内部电极22.然后，在排出工序中，残留的第二化学镀液82从内部室25排出。

公开(公告)号：US5766434A

公开(公告)日：1998-06-16

申请号：US797652

申请日：1997-01-31

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

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

IPC分类号： G01N27/407 ,  G01N27/26

CPC分类号： G01N27/4075 ,  G01N27/4077

摘要： An oxygen concentration detecting device comprises a solid electrolyte body, inner and outer electrodes formed on the opposite sides of the solid electrolyte body, and a protective layer formed on the outer electrode and comprised of coarse particles and fine particles mutually bonded through an inorganic binder while substantially keeping the original forms of the both types of particles. A ratio of an average particle size, RB, of the coarse particles to an average particle size, RA, of the fine particles of 30:1 or above, and a content, WA, of the fine particles in the protective layer based on the total content, W, of the content, WA, of the fine particles and the content, WB, of the coarse particles on the weight basis is in the range of 15 to 80 %. A method for fabricating the detecting device having such a protective layer as set out above is also described.

摘要翻译： 氧浓度检测装置包括固体电解质体，形成在固体电解质体的相对侧的内部和外部电极，以及形成在外部电极上的保护层，其由通过无机粘合剂相互粘合的粗粒子和微粒组成， 基本保持两种类型颗粒的原始形式。 基于上述保护层中的微粒的粗粒子的平均粒径RB与微粒的平均粒径RA（30:1以上）和含量WA的比例 粗颗粒的含量W W，微粒的含量W和重量的含量WB在15〜80％的范围内。 还描述了制造具有上述保护层的检测装置的方法。

公开(公告)号：US5935399A

公开(公告)日：1999-08-10

申请号：US792737

申请日：1997-01-31

申请人： Akio Tanaka ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito ,  Katsuhiro Ishikawa

发明人： Akio Tanaka ,  Naoto Miwa ,  Hiromi Sano ,  Toshitaka Saito ,  Katsuhiro Ishikawa

IPC分类号： G01N27/407

CPC分类号： G01N27/4075

摘要： An air-fuel ratio sensing element comprises a cup-shaped solid electrolyte with one end opened and the other end closed, an external electrode provided on an outer wall surface of the solid electrolyte so as to be exposed to measured gas, and an internal electrode provided on an inner wall surface of the solid electrolyte in a confronting relationship to the external electrode. A first insulating layer, made of a gas-permeable and nonconductive porous material, is provided on the external electrode at least in a region used for detecting of an air-fuel ratio. A second insulating layer is provided outside the first insulating layer and, a heater layer as provided between the first insulating layer and the second insulating layer.

摘要翻译： 空燃比检测元件包括一端敞开而另一端闭合的杯形固体电解质，设置在固体电解质的外壁表面上以暴露于测量气体的外部电极，以及内部电极 以与外部电极相对的关系设置在固体电解质的内壁表面上。 至少在用于检测空燃比的区域中，在外部电极上设置由透气且不导电的多孔材料制成的第一绝缘层。 第二绝缘层设置在第一绝缘层的外侧，以及设置在第一绝缘层和第二绝缘层之间的加热器层。

公开(公告)号：US5948225A

公开(公告)日：1999-09-07

申请号：US861226

申请日：1997-05-21

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： G01N27/409 ,  G01N27/407

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。