公开(公告)号：US06660145B2

公开(公告)日：2003-12-09

申请号：US09960980

申请日：2001-09-25

申请人： Yasumichi Hotta ,  Hiroshi Sugino ,  Tooru Katafuchi ,  Namitsugu Fujii

发明人： Yasumichi Hotta ,  Hiroshi Sugino ,  Tooru Katafuchi ,  Namitsugu Fujii

IPC分类号： G01N27407

CPC分类号： G01N27/4077

摘要： An oxygen sensor element is provided which may be used in an oxygen sensor designed to measure the concentration of oxygen contained in exhaust gasses of an automotive internal combustion engine. The gas sensor element includes a solid electrolyte body, a target gas electrode, a reference gas electrode, and a catalytic layer formed over the target gas electrode. The catalytic layer is made of heat resisting ceramic grains which hold thereon catalytic metal grains whose average grain size is 0.3 to 2.0 &mgr;m, a weight of catalytic metal grains per unit area of the catalytic layer, as defined by projecting the target gas electrode on a plane, is 10 to 200 &mgr;g/cm2. This facilitates the reaction of exhaust gasses such as H2, NOx, and HC with O2 over the target gas electrode, thus resulting in improved accuracy of a sensor output over a wide temperature range.

摘要翻译： 提供氧传感器元件，其可用于设计用于测量汽车内燃机排气中所含氧气浓度的氧传感器中。 气体传感器元件包括固体电解质体，目标气体电极，参考气体电极和形成在目标气体电极上的催化剂层。 催化剂层由耐热陶瓷颗粒制成，其中保持了平均粒径为0.3-2.0μm的催化金属颗粒，催化剂层每单位面积催化金属颗粒的重量，如目标气体电极投影在 平面为10〜200mug / cm 2。 这有助于在目标气体电极上使诸如H 2，NO x和HC之类的废气与O 2的反应，从而在较宽的温度范围内提高传感器输出的精度。

公开(公告)号：US06776895B2

公开(公告)日：2004-08-17

申请号：US10391801

申请日：2003-03-20

申请人： Tooru Katafuchi ,  Yasumichi Hotta ,  Namitsugu Fujii

发明人： Tooru Katafuchi ,  Yasumichi Hotta ,  Namitsugu Fujii

IPC分类号： G01N27407

CPC分类号： G01N27/4075

摘要： A method of manufacturing a gas sensor element which includes a solid electrolyte body, a target gas electrode a reference gas electrode provided on a surface of the solid electrolyte body so as to be exposed to a reference gas and the manufacturing method includes exposing the gas sensor element to a gas atmosphere containing at least one of a hydrocarbon gas, a CO2 gas, and a H2 gas and applying an ac voltage to said target gas electrode and the reference gas electrode. Each of the target gas electrode and the reference gas electrode is made up of a plurality of crystal grains defined by grain boundaries having a total length of 1000 &mgr;m or more in a surface area of 100 &mgr;m2.

摘要翻译： 一种制造气体传感器元件的方法，该气体传感器元件包括固体电解质体，目标气体电极，设置在固体电解质体的表面上以便暴露于参考气体的参考气体电极，并且该制造方法包括使气体传感器 元素连接到包含烃气体，CO 2气体和H 2气体中的至少一种的气体气氛中，并且向所述目标气体电极和参考气体电极施加交流电压。 目标气体电极和参考气体电极由表面积为100mum 2的总长度为1000μm以上的晶界限定的多个晶粒构成。

公开(公告)号：US06562212B2

公开(公告)日：2003-05-13

申请号：US09916344

申请日：2001-07-30

申请人： Tooru Katafuchi ,  Yasumichi Hotta ,  Namitsugu Fujii

发明人： Tooru Katafuchi ,  Yasumichi Hotta ,  Namitsugu Fujii

IPC分类号： G01N27407

CPC分类号： G01N27/4075

摘要： A gas sensor element is provided which is used in a gas sensor such as an oxygen sensor. The gas sensor element includes a solid electrolyte body, a target gas electrode provided on a surface of the solid electrolyte body so as to be exposed to a gas to be measured, and a reference gas electrode provided on a surface of the solid electrolyte body so as to be exposed to a reference gas. Each of the target gas electrode and the reference gas electrode is made up of a plurality of crystal grains defined by grain boundaries. The total length of the grain boundaries in each of the target gas electrode and the reference gas electrode is 1000 &mgr;m or more in a surface area of 1000 &mgr;m2. This ensures a sufficient degree of diffusion of the gasses in the target and reference gas electrodes, thereby providing a rapid response rate to the gas sensor element.

摘要翻译： 提供了一种气体传感器元件，其用于诸如氧传感器的气体传感器中。 气体传感器元件包括固体电解质体，设置在固体电解质体的表面上以暴露于被测量气体的目标气体电极和设置在固体电解质体表面上的参考气体电极， 以暴露于参考气体。 目标气体电极和参考气体电极由晶界限定的多个晶粒构成。 在目标气体电极和参考气体电极中的每个目标气体电极的总长度在1000mum2的表面积中为1000μm以上。 这确保气体在目标和参考气体电极中的充分扩散程度，从而为气体传感器元件提供快速响应速率。

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：US4626337A

公开(公告)日：1986-12-02

申请号：US729854

申请日：1985-05-02

申请人： Yasumichi Hotta ,  Takao Akatsuka ,  Masao Kawaguchi ,  Jiro Nakano ,  Takao Ishibashi

发明人： Yasumichi Hotta ,  Takao Akatsuka ,  Masao Kawaguchi ,  Jiro Nakano ,  Takao Ishibashi

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/46

CPC分类号： G01N27/4075 ,  G01N27/407 ,  G01N27/4078

摘要： The oxygen sensor has a solid electrolytic element made of an oxygen ion-conducting metal oxide. This element is formed in a cup shape, closed at one end and opened at its other end. The outer peripheral surface of the element is exposed to exhaust gas, and the inner peripheral surface of the element is exposed to the atmosphere. A first electrode is fixed to the outer peripheral surface of the element, and a second electrode is fixed to the inner peripheral surface of the element. An electrically insulating layer is formed on the outer peripheral surface of the element except where the first electrode is disposed. A metal lead of thin film, connected to the first electrode, is formed on the insulating layer. Further, a retaining lead connected to the first electrode is formed on the metal lead. This retaining lead is formed by densely sintering a conductive material and a binding material.

摘要翻译： 氧传感器具有由氧离子传导金属氧化物制成的固体电解质元件。 该元件形成为杯形，在一端封闭并在其另一端开口。 元件的外周面暴露于废气中，元件的内周面暴露在大气中。 第一电极固定在元件的外周面上，第二电极固定在元件的内周面上。 除了设置第一电极之外，在元件的外周表面上形成电绝缘层。 连接到第一电极的薄膜的金属引线形成在绝缘层上。 此外，在金属引线上形成连接到第一电极的保持引线。 该保持引线通过密集地烧结导电材料和粘合材料而形成。