公开(公告)号：US07527718B2

公开(公告)日：2009-05-05

申请号：US11091349

申请日：2005-03-28

申请人： Kunihiko Nakagaki ,  Sang Jae Lee ,  Hiroyuki Shindo

发明人： Kunihiko Nakagaki ,  Sang Jae Lee ,  Hiroyuki Shindo

IPC分类号： G01N27/26

CPC分类号： G01N27/4074 ,  G01N27/419 ,  Y10T29/49002

摘要： A method of treating a gas sensor element for improving measurement characteristics thereof, including: heating the gas sensor element at a temperature of 600-1000° C. for 3-24 hours in a treatment atmosphere in which an oxygen concentration is regulated to be not higher than 0.2% and in which are included: (A) not lower than 1000 ppm of an adsorptive gas component wherein an adsorptive capable of being adsorbed on the measuring electrode is bound to oxygen; and (B) a combustible gas in an amount that can be substantially stoichiometrically oxidized by oxygen that is generated upon reduction or decomposition of the adsorptive gas component, so that the adsorptive gas component is reduced or decomposed for permitting the adsorptive in the adsorptive gas component to be adsorbed on the measuring electrode, and so that the noble metal material of the measuring electrode is reduced.

摘要翻译： 一种处理气体传感器元件以改善其测量特性的方法，包括：在氧浓度不被调节的处理气氛中，在600-1000℃的温度下加热气体传感器元件3-24小时 高于0.2％，其中包括：（A）不低于1000ppm的能够吸附在测量电极上的吸附剂与吸附气体组分结合; 和（B）可吸收气体组分被还原或分解后产生的氧气基本上化学计量氧化的可燃气体，使得吸附气体组分被还原或分解，以吸附吸附气体组分 被吸附在测量电极上，使得测量电极的贵金属材料减少。

公开(公告)号：US07943024B2

公开(公告)日：2011-05-17

申请号：US11451825

申请日：2006-06-13

申请人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee

发明人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee

IPC分类号： G01N27/407

CPC分类号： G01N27/4075 ,  G01N27/4045

摘要： A technology which makes it possible to prolong the service life of a porous electrode constituted by a sintered body of an electrode metal material and a ceramic material, and the service life of an NOx sensor element having the porous electrode. The porous electrode is produced so as to have a total pore volute of at least 0.013 ml/g and a peak pore diameter of at least 0.31 μm as measured by mercury penetration method, by a process wherein a composition which includes the electrode material and the ceramic material and to which a vanishable solid material that vanishes by firing is formed into a thin film, which is then fired to form the sintered body which consists of the electrode material and the ceramic material and which has a multiplicity of pores formed as a result of vanishing of the vanishable solid material.

摘要翻译： 能够延长由电极金属材料和陶瓷材料的烧结体构成的多孔电极的使用寿命以及具有多孔电极的NOx传感器元件的使用寿命的技术。 通过以下方法制造多孔电极，使其具有至少0.013ml / g的总孔径和通过汞渗透法测量的至少0.31μm的峰值孔径，其中包括电极材料和 陶瓷材料，通过烧成而消失的可消除的固体材料形成为薄膜，然后将其烧制以形成由电极材料和陶瓷材料组成并且具有多个孔的结构的烧结体 消失的固体物质消失。

公开(公告)号：US08409414B2

公开(公告)日：2013-04-02

申请号：US12349707

申请日：2009-01-07

申请人： Takeya Miyashita ,  Sang Jae Lee ,  Kunihiko Nakagaki

发明人： Takeya Miyashita ,  Sang Jae Lee ,  Kunihiko Nakagaki

IPC分类号： G01N27/26

CPC分类号： G01N27/4077 ,  G01N27/4072 ,  G01N27/417

摘要： A gas sensor and nitrogen oxide sensor, which, when fitted to the exhaust system of an internal combustion engine, can suppress the influence of harmful substances contained in a measurement gas and can prevent the reduction in sensitivity over time. A harmful substance-trapping layer is formed at a gas inlet for introducing a to-be-measured gas from an external space into an internal space, and in a buffering space formed between diffusion resistance portions. In a trap-formed portion of a gas passage in which the harmful substance-trapping layer is formed, the measurement gas can pass in an amount of 80% or more of when the harmful substance-trapping layer is not formed in the trap-formed portion. A diffusion resistance is attained in the diffusion resistance portions; a harmful substance is trapped in the harmful substance-trapping layer; and the measurement gas is allowed to flow into a detection electrode side.

摘要翻译： 一种气体传感器和氮氧化物传感器，当装配到内燃机的排气系统时，可以抑制测量气体中所含的有害物质的影响，并且可以防止随时间的灵敏度降低。 在气体入口形成有害物质捕获层，用于将待测气体从外部空间引入内部空间，并形成在扩散阻力部分之间形成的缓冲空间中。 在其中形成有害物质捕获层的气体通道的陷阱形成部分中，当陷阱形成的有害物质捕获层未形成时，测量气体可以通过80％以上的量 一部分。 在扩散电阻部分中获得扩散电阻; 有害物质被捕获在有害物质捕获层中; 使测定气体流入检测电极侧。

公开(公告)号：US07156966B2

公开(公告)日：2007-01-02

申请号：US10419391

申请日：2003-04-21

申请人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee ,  Osamu Nakasone

发明人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee ,  Osamu Nakasone

IPC分类号： G01N27/30 ,  G01N27/407

CPC分类号： B01D53/32 ,  B01D2257/404 ,  G01N27/419 ,  G01N33/0037 ,  Y02A50/245

摘要： A detecting electrode comprises a first cermet electrode layer formed directly on a solid electrolyte layer and a second cermet electrode layer formed on the first cermet electrode layer. A ratio between an alloy of Pt—Rh and ZrO2 in the first cermet electrode layer ranges from 20:80 to 50:50 by volume ratio. On the other hand, a ratio between an alloy of Pt—Rh and ZrO2 in the second cermet electrode layer ranges from 60:40 to 50:50 by volume ratio.

摘要翻译： 检测电极包括直接形成在固体电解质层上的第一金属陶瓷电极层和形成在第一金属陶瓷电极层上的第二金属陶瓷电极层。 第一金属陶瓷电极层中的Pt-Rh和ZrO 2的合金的比例为20:80至50:50（体积比）。 另一方面，第二金属陶瓷电极层中的Pt-Rh与ZrO 2的合金的比例为60:40〜50:50的体积比。

公开(公告)号：US07153402B2

公开(公告)日：2006-12-26

申请号：US10419392

申请日：2003-04-21

申请人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee ,  Osamu Nakasone

发明人： Kunihiko Nakagaki ,  Hideyuki Suzuki ,  Sang Jae Lee ,  Osamu Nakasone

IPC分类号： G01N27/30 ,  G01N27/407

CPC分类号： G01N33/0037 ,  G01N27/4074 ,  Y02A50/245

摘要： A detecting electrode comprises a first cermet electrode layer formed directly on a solid electrolyte layer and a second cermet electrode layer formed on the first cermet electrode layer. The ratio between Pt and Rh in the first cermet electrode layer ranges from 100:0 to 25:75 by weight. The ratio between Pt and Rh in the second cermet electrode layer ranges from 25:75 to 0:100 by weight.

公开(公告)号：US20050210657A1

公开(公告)日：2005-09-29

申请号：US11091349

申请日：2005-03-28

申请人： Kunihiko Nakagaki ,  Sang Lee ,  Hiroyuki Shindo

发明人： Kunihiko Nakagaki ,  Sang Lee ,  Hiroyuki Shindo

IPC分类号： G01N27/407 ,  G01N27/419 ,  G01N33/00 ,  G01N27/26

CPC分类号： G01N27/4074 ,  G01N27/419 ,  Y10T29/49002

摘要： A method of treating a gas sensor element for improving measurement characteristics thereof, including: heating the gas sensor element at a temperature of 600-1000° C. for 3-24 hours in a treatment atmosphere in which an oxygen concentration is regulated to be not higher than 0.2% and in which are included: (A) not lower than 1000 ppm of an adsorptive gas component wherein an adsorptive capable of being adsorbed on the measuring electrode is bound to oxygen; and (B) a combustible gas in an amount that can be substantially stoichiometrically oxidized by oxygen that is generated upon reduction or decomposition of the adsorptive gas component, so that the adsorptive gas component is reduced or decomposed for permitting the adsorptive in the adsorptive gas component to be adsorbed on the measuring electrode, and so that the noble metal material of the measuring electrode is reduced.

摘要翻译： 一种处理气体传感器元件以改善其测量特性的方法，包括：在氧浓度不被调节的处理气氛中，在600-1000℃的温度下加热气体传感器元件3-24小时 高于0.2％，其中包括：（A）不低于1000ppm的能够吸附在测量电极上的吸附剂与吸附气体组分结合; 和（B）可吸收气体组分被还原或分解后产生的氧气基本上化学计量氧化的可燃气体，使得吸附气体组分被还原或分解，以吸附吸附气体组分 被吸附在测量电极上，使得测量电极的贵金属材料减少。

公开(公告)号：US08480870B2

公开(公告)日：2013-07-09

申请号：US13412026

申请日：2012-03-05

申请人： Yoshio Suzuki ,  Kunihiko Nakagaki ,  Yuji Okuda

发明人： Yoshio Suzuki ,  Kunihiko Nakagaki ,  Yuji Okuda

IPC分类号： G01N27/26

CPC分类号： G01N27/4071 ,  G01N27/4073 ,  Y10T29/49

摘要： A gas sensor element, wherein an amount of flexure in a first section extending in a longitudinal direction of the sensor element from the position 8/27 of a size of the element apart from one end of the element to the other end, is set to be greater than or equal to 1/1360 and less than or equal to 1/670 with respect to the size in the longitudinal direction of the element. The amount of flexure is a sum of a distance from a regression line to an upper side maximum displacement point and a distance from the regression line to a lower side maximum displacement point when calculating the regression line representing the relation of the position X in the longitudinal direction of the element and the displacement Y in a thickness direction from a plurality of data sets showing the relation of position X and displacement Y.

摘要翻译： 一种气体传感器元件，其中在从所述元件的一端的尺寸的距离从所述元件的尺寸的位置8/27延伸到所述传感器元件的纵向方向上的第一部分中的挠曲量被设置为 相对于元件的纵向尺寸大于或等于1/1360且小于或等于1/670。 弯曲量是当计算表示纵向中的位置X的关系的回归线时，从回归线到上侧最大位移点的距离和从回归线到下侧最大位移点的距离之和 元件的方向和从表示位置X和位移Y的关系的多个数据集合在厚度方向上的位移Y.

公开(公告)号：US20080202205A1

公开(公告)日：2008-08-28

申请号：US12036393

申请日：2008-02-25

申请人： Yoshio SUZUKI ,  Kouji Tagawa ,  Kunihiko Nakagaki

发明人： Yoshio SUZUKI ,  Kouji Tagawa ,  Kunihiko Nakagaki

IPC分类号： H01S4/00 ,  G01N29/02

CPC分类号： G01N27/4073 ,  Y10T29/49002 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/49078 ,  Y10T29/4908 ,  Y10T83/487 ,  Y10T83/49

摘要： A solid electrolyte body is placed on and fixed to an upper plate of a press jig such that a major surface (an upper surface) of the solid electrolyte body faces one major surface of a guide plate having a through-hole. The upper plate is rotated by a transfer mechanism to incline the solid electrolyte body in one direction, and the inclined solid electrolyte body is moved toward the other major surface of the guide plate such that a first edge of the solid electrolyte body protrudes from the through-hole. Then, a cutter is slid along the other major surface, so that the first edge is chamfered to form a first chamfered portion.

摘要翻译： 将固体电解质体放置在固定在压制夹具的上板上并固定在固体电解质体的主表面（上表面）面向具有通孔的引导板的主表面上。 上板通过转移机构旋转以使固体电解质体在一个方向上倾斜，并且倾斜的固体电解质体朝向引导板的另一主表面移动，使得固体电解质体的第一边缘从直通 -孔。 然后，切割器沿着另一个主表面滑动，使得第一边缘被倒角以形成第一倒角部分。

公开(公告)号：US20080156644A1

公开(公告)日：2008-07-03

申请号：US11964314

申请日：2007-12-26

申请人： Yoshio Suzuki ,  Hideyuki Suzuki ,  Kunihiko Nakagaki

发明人： Yoshio Suzuki ,  Hideyuki Suzuki ,  Kunihiko Nakagaki

IPC分类号： C25B11/12 ,  B05D5/12

CPC分类号： G01N33/0037 ,  G01N27/4075 ,  Y02A50/245

摘要： A detecting electrode is a NOx-decomposing electrode having a certain or a high NOx-decomposing/reducing ability, which is formed on a third solid electrolyte layer for decomposing a NOx to produce oxygen. The detecting electrode contains a noble metal Pt, a material ZrO2 of the third solid electrolyte layer, and a mixture containing silica (SiO2) and alumina (Al2O3). Specifically, the detecting electrode contains 80% to 90% by weight of the Pt, 9.5% to 19.8% by weight of the ZrO2, and 0.2% to 0.5% by weight of the mixture containing silica and alumina.

摘要翻译： 检测电极是具有一定的或高的NOx分解/还原能力的NOx分解电极，其形成在用于分解NOx以产生氧的第三固体电解质层上。 检测电极含有贵金属Pt，第三固体电解质层的材料ZrO 2，以及含有二氧化硅（SiO 2）和氧化铝（Al 2 O 3）的混合物， 2 3 3）。 具体地，检测电极含有80重量％至90重量％的Pt，9.5重量％至19.8重量％的ZrO 2 2，以及0.2重量％至0.5重量％的含有二氧化硅和 氧化铝。

公开(公告)号：US06689266B2

公开(公告)日：2004-02-10

申请号：US10063957

申请日：2002-05-29

申请人： Nobuhide Kato ,  Kunihiko Nakagaki ,  Satoshi Nishikawa

发明人： Nobuhide Kato ,  Kunihiko Nakagaki ,  Satoshi Nishikawa

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N27/4074 ,  G01N27/4075 ,  G01N27/417 ,  G01N33/0037 ,  Y02A50/245

摘要： A NOx sensor for measuring NOx concentration including a main pumping cell and a detecting electrode, the main pumping cell-including an electrode having no decomposing/reducing ability for NOx or a low decomposing/reducing ability for NOx, to be used to control oxygen concentration in a measurement gas to have a predetermined value at which NO is not substantially decomposable, and the detecting electrode having a certain decomposing/reducing ability for NOx or a high decomposing/reducing ability for NOx, to be used so that NOx is decomposed to measure the NOx concentration by measuring an amount of oxygen produced during this process, wherein a cermet electrode composed of a Pt—Rh alloy and a ceramic component is used as the detecting electrode. Accordingly, it is possible to suppress the oxidation of Rh and the reconversion into the metal contained in the detecting electrode, stabilize the impedance, and stabilize the sensitivity to NOx.

摘要翻译： 用于测量包括主泵浦单元和检测电极的NOx浓度的NOx传感器，所述主泵浦单元包括不具有用于NOx的分解/还原能力的电极或用于NOx的低分解/还原能力的电极，用于控制氧浓度 在测量气体中具有不能基本上分解NO的预定值，并且使用具有一定的NOx分解/还原能力或NOx的高分解/还原能力的检测电极，以使NOx被分解以测量 通过测量在该过程中产生的氧气量的NOx浓度，其中使用由Pt-Rh合金和陶瓷成分组成的金属陶瓷电极作为检测电极。 因此，可以抑制Rh的氧化和再次转化成检测电极中所含的金属，稳定阻抗，并且使对NOx的敏感性稳定。