公开(公告)号：US5804050A

公开(公告)日：1998-09-08

申请号：US869414

申请日：1997-06-04

申请人： Nobuhiro Hayakawa ,  Syogo Kawajiri ,  Yoshiro Noda ,  Hiroshi Miyata ,  Satoshi Ishikawa ,  Shoji Akatsuka

发明人： Nobuhiro Hayakawa ,  Syogo Kawajiri ,  Yoshiro Noda ,  Hiroshi Miyata ,  Satoshi Ishikawa ,  Shoji Akatsuka

IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/26 ,  G01N7/00

CPC分类号： G01N27/407

摘要： A shaft-like heating member is inserted into and fixed to an oxygen sensing element of a hollowed shaft-like member, together with of a terminal member. A heating portion is located at a portion of the heating member closer to the extreme end thereof. The surface of the heating portion is resiliently pressed on the element inner wall in a side-abutting fashion. In this case, a guide mainly gives rise to the elastic force. With such a side-abutting structure, heat generated in the heating portion is directly transferred to the oxygen sensing element, and heats it. Heat radiated from a portion in the vicinity of its contact position additively heats the oxygen sensing element. Temperature of the oxygen sensor quickly reaches an activation temperature.

摘要翻译： 轴状加热构件与端子构件一起插入并固定到中空轴状构件的氧气感测元件。 加热部分位于加热部件的靠近其末端的部分。 加热部分的表面以侧面邻接的方式弹性地压在元件内壁上。 在这种情况下，导轨主要产生弹性力。 利用这种侧向抵接结构，在加热部分中产生的热直接传递到氧气感测元件，并将其加热。 从其接触位置附近的部分辐射的热量加热氧传感元件。 氧传感器的温度快速达到活化温度。

公开(公告)号：US06344134B1

公开(公告)日：2002-02-05

申请号：US09232001

申请日：1999-01-15

申请人： Tessho Yamada ,  Noboru Ishida ,  Toshitaka Matsuura ,  Yoshiro Noda ,  Nobuhiro Hayakawa ,  Norihiko Nadanami ,  Satoshi Sugaya ,  Takaki Otsuka ,  Masashi Ando ,  Takafumi Oshima

发明人： Tessho Yamada ,  Noboru Ishida ,  Toshitaka Matsuura ,  Yoshiro Noda ,  Nobuhiro Hayakawa ,  Norihiko Nadanami ,  Satoshi Sugaya ,  Takaki Otsuka ,  Masashi Ando ,  Takafumi Oshima

IPC分类号： G01N27407

CPC分类号： G01N27/417

摘要： An apparatus and method using a two-serial space sensor (having first and second internal spaces 2,3) for accurately measuring NOx concentration in gas, e.g., exhausted from an internal combustion engine. Both NOx (nitrogen oxide) and oxygen are forced to be partially dissociated in the first space 2 to an oxygen concentration level of 2×10−7 to 2×10−10 atm by pumping out oxygen from the first space 2. The NOx concentration is determined based on the second current measured in the second space 4 and based on the NO dissociation percentage in the first chamber which is 0.5-50%, or preferably 2-20%. The NOx measurement accuracy is further improved when the above oxygen concentration level is maintained from 2×10−8 to 2×10−9 and the temperature drift of the sensor is maintained within ±5° C. under a sensor temperature range of 700-900° C.

摘要翻译： 一种使用两串联空间传感器（具有第一和第二内部空间2,3）的装置和方法，用于精确测量例如从内燃机排出的气体中的NOx浓度。 通过从第一空间2中抽出氧，迫使NOx（氮氧化物）和氧在第一空间2中部分地离解为2x10-7至2×10-10大气压的氧浓度水平。基于 在第二空间4中测量的第二电流，并且基于第一室中的NO解离百分比为0.5-50％，或优选2-20％。 在700-900℃的传感器温度范围内，当上述氧气浓度水平保持在2×10 -8至2×10 -9，并且传感器的温度漂移保持在±5℃以内时，NOx测量精度进一步提高。

公开(公告)号：US20120203471A1

公开(公告)日：2012-08-09

申请号：US13434185

申请日：2012-03-29

申请人： Tomohiro Hara ,  Shigehiro Nukatsuka ,  Akiyoshi Sato ,  Nobuhiro Hayakawa ,  Takeshi Adachi

发明人： Tomohiro Hara ,  Shigehiro Nukatsuka ,  Akiyoshi Sato ,  Nobuhiro Hayakawa ,  Takeshi Adachi

IPC分类号： G06F19/00

CPC分类号： G06Q50/06

摘要： A generation source estimation apparatus of a diffusion material is featured by including: an observation information acquisition section which acquires position information, and measured concentration information from each of the observers; a virtual grid setting section which sets virtual discharge points on a virtual grid; an influence function calculation section which calculates influence functions; a residual norm calculation section which calculates, for each of the virtual discharge points, a residual norm that is the sum of squares of a difference between the concentration information acquired from each of the observers, and the product of the influence function associating the virtual discharge point with each of the observers, and the discharge intensity at the virtual discharge point; and an estimation section which estimates, as a discharge point, the virtual discharge point corresponding to the residual norm smallest among the residual norms calculated respectively for all the virtual discharge points.

摘要翻译： 扩散材料的生成源估计装置的特征在于包括：观察信息获取部，其从各观察者获取位置信息和测量的浓度信息; 虚拟网格设置部，其在虚拟网格上设置虚拟放电点; 影响函数计算部，计算影响函数; 剩余范数计算部，针对每个虚拟放电点，计算作为从每个观察者获取的浓度信息之间的差的平方和的残差，以及与虚拟放电相关联的影响函数的乘积 每个观察者点和虚拟放电点的放电强度; 以及估计部分，作为放电点，估计对应于分别针对所有虚拟放电点计算的残差范数中的最小残留量的虚拟放电点。

公开(公告)号：US5279886A

公开(公告)日：1994-01-18

申请号：US645870

申请日：1991-01-25

申请人： Takeshi Kawai ,  Nobuhiro Hayakawa ,  Harumi Aiba

发明人： Takeshi Kawai ,  Nobuhiro Hayakawa ,  Harumi Aiba

IPC分类号： C04B35/111 ,  C04B35/119 ,  H01C7/00 ,  H05B3/14 ,  H05B3/28 ,  C01F17/00

CPC分类号： H05B3/283 ,  C04B35/119 ,  H05B3/14 ,  Y10S428/901 ,  Y10T428/24917 ,  Y10T428/24926

摘要： The present invention provides an improved alumina sintered body on which a heater electrode is printed and which is sintered simultaneously with the heater electrode at temperatures lower than the optimum value 1,520.degree. C. The alumina sintered body includes high purity of alumina and 2 through 18% by weight partially stabilized zirconia, which further contains 2 through 6 mole percent solid solution of an oxide or oxides selected from Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, and lanthanum series metal oxides. The high purity of alumina may contain 0.1% by weight alkaline metals and/or alkaline earth metals and 1.0% by weight SiO.sub.2 at most. In the alumina sintered body of the invention, segregation and migration of impurities and chipping are effectively prevented and hence the durability of the sintered body is highly improved. Use of the alumina sintered body of the invention as a heater base makes the durability of a heater much longer.

摘要翻译： 本发明提供了一种改进的氧化铝烧结体，其上印刷有加热器电极，并且在低于最佳值1520℃的温度下与加热器电极同时烧结。氧化铝烧结体包括高纯度的氧化铝和2至18％ 其还含有选自Y 2 O 3，Sc 2 O 3和镧系金属氧化物的氧化物或氧化物的2〜6摩尔％固溶体的部分稳定化的氧化锆。 氧化铝的高纯度最多可以含有0.1重量％的碱金属和/或碱土金属和1.0重量％的SiO 2。 在本发明的氧化铝烧结体中，有效地防止了杂质的偏析和迁移，并且因此高度提高了烧结体的耐久性。 使用本发明的氧化铝烧结体作为加热器基座使得加热器的耐久性更长。

公开(公告)号：US4935119A

公开(公告)日：1990-06-19

申请号：US832798

申请日：1986-02-25

申请人： Tetsusyo Yamada ,  Nobuhiro Hayakawa

发明人： Tetsusyo Yamada ,  Nobuhiro Hayakawa

IPC分类号： G01N27/419 ,  G01N27/12 ,  G01N27/407 ,  G01N27/417

CPC分类号： G01N27/417

摘要： An air/fuel ratio sensor is described, comprising an oxygen pump element composed of a solid electrolyte having a pair of electrodes on opposite sides thereof, a gas diffusing section section that is in contact with one electrode on said oxygen pump element and which accepts a limited inflow of a gas to be analyzed, and an oxygen gas detecting element that is based on a transition metal oxide disposed within said gas diffusing section, the resistance of which varies in proportion to the partial pressure of oxygen gas in the gas to be analyzed.

摘要翻译： 描述了一种空气/燃料比传感器，包括由在其相对侧上具有一对电极的固体电解质构成的氧气泵元件，与所述氧气泵元件上的一个电极接触并且接受 待分析气体的有限流入和基于设置在所述气体扩散部内的过渡金属氧化物的氧气检测元件，其电阻与待分析气体中的氧气分压成比例变化 。

公开(公告)号：US08827435B2

公开(公告)日：2014-09-09

申请号：US13325658

申请日：2011-12-14

申请人： Daisuke Uematsu ,  Kentaro Mori ,  Nobuhiro Hayakawa

发明人： Daisuke Uematsu ,  Kentaro Mori ,  Nobuhiro Hayakawa

IPC分类号： C09D11/00 ,  C09D7/12

CPC分类号： C09D11/322 ,  C09D7/67 ,  C09D7/68 ,  C09D11/52

摘要： There is provided an ink for printing a conductor pattern on a substrate, including platinum particles, wherein 70% or more of the platinum particles have a particle size of 0.05 to 0.5 μm. Even when the viscosity of the printing ink is controlled to a relatively low level for use in ink-jet printing process, it is possible by such particle size distribution control to prevent sedimentation of the platinum particles and excessive shrinkage of the conductor pattern due to sintering of the platinum particles during firing so that the conductor pattern can attain improved conduction characteristics.

摘要翻译： 提供了一种用于在包括铂颗粒的基板上印刷导体图案的油墨，其中70％或更多的铂颗粒具有0.05至0.5μm的粒径。 即使将印刷油墨的粘度控制在用于喷墨印刷工艺的较低水平，也可以通过这种粒度分布控制来防止铂颗粒的沉淀和由于烧结导致的导体图案的过度收缩 的铂粒子，使得导体图案可以获得改善的导电特性。

公开(公告)号：US6071554A

公开(公告)日：2000-06-06

申请号：US199551

申请日：1998-11-25

申请人： Hiroshi Isomura ,  Yukichika Ito ,  Akio Mizutani ,  Nobuhiro Hayakawa

发明人： Hiroshi Isomura ,  Yukichika Ito ,  Akio Mizutani ,  Nobuhiro Hayakawa

IPC分类号： G01N27/409 ,  C23C18/44 ,  G01N27/407 ,  B05D5/12

CPC分类号： C23C18/44 ,  G01N27/407 ,  G01N27/4075

摘要： Disclosed is a process for the formation of an electrode for sensor element which comprises the formation of a platinum electrode on a solid electrolyte formed in a predetermined shape as a sensor element by electroless plating, wherein said electroless plating is effected in a platinum (II) complex solution as a plating solution on which a reducing agent for reducing said platinum (II) complex is acted.

摘要翻译： 公开了一种用于形成传感器元件的电极的方法，其包括通过化学镀在形成为预定形状的固体电解质上形成铂电极作为传感器元件，其中所述无电镀在铂（II）中进行， 复合溶液作为其上用于还原所述铂（II）络合物的还原剂的电镀溶液。

公开(公告)号：US5433830A

公开(公告)日：1995-07-18

申请号：US186650

申请日：1994-01-26

申请人： Takeshi Kawai ,  Nobuhiro Hayakawa ,  Tessho Yamada

发明人： Takeshi Kawai ,  Nobuhiro Hayakawa ,  Tessho Yamada

IPC分类号： G01N27/419 ,  G01N27/26

CPC分类号： G01N27/419

摘要： Activation treatment for a zirconia oxygen sensor is performed by applying alternately a treating voltage, which can make an oxygen partial pressure at the electrode-zirconia interface of a sensor equal to or higher than a critical oxygen partial pressure value (10.sup.-34 atm) not to cause blackening, between a pair of electrodes of the sensor at temperatures of 500.degree. to 800.degree. C. As a result, the treatment current flowing through the sensor can always be held below the critical level, whereby the sensor can be activated without causing blackening and other physical structural changes to occur in the zirconia sensing element. If the sensor is to be used in an A/F ratio control or the like on an internal combustion engine, it can be rendered active at all times by the activation treatment during or before or after the control.

摘要翻译： 氧化锆氧传感器的激活处理通过交替施加处理电压来进行，该处理电压可以使传感器的电极 - 氧化锆界面处的氧分压等于或高于临界氧分压值（10-34atm）而不是 在500〜800℃的温度下在传感器的一对电极之间引起黑化。结果，流过传感器的处理电流总是能够保持在临界水平以下，从而可以激活传感器而不引起 氧化锆感应元件中发生黑化和其他物理结构变化。 如果将传感器用于内燃机上的A / F比控制等，则可以通过在控制期间或控制之后或之后的激活处理始终使其变为活动状态。

公开(公告)号：US5357750A

公开(公告)日：1994-10-25

申请号：US1225

申请日：1993-01-06

申请人： Yasuo Ito ,  Nobuhiro Hayakawa ,  Tessho Yamada

发明人： Yasuo Ito ,  Nobuhiro Hayakawa ,  Tessho Yamada

IPC分类号： F01N11/00 ,  F01N3/20

CPC分类号： F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47

摘要： The invention provides a method for accurately and precisely detecting deterioration of a catalyst and measuring a conversion efficiency of a catalyst for HC/CO/NOx by using an oxygen sensor and an air/fuel ratio sensor disposed on the upstream and downstream sides of the catalyst, respectively. The catalyst is determined to be deteriorating when an output amplitude of the air/fuel ratio sensor becomes greater than a predetermined value. The conversion efficiency of the catalyst is determined based on a predetermined relationship between the output amplitude and the mean converted rate of HC/CO/NOx.

摘要翻译： 本发明提供一种准确，准确地检测催化剂劣化的方法，并且通过使用设置在催化剂的上游侧和下游侧的氧传感器和空气/燃料比传感器来测量HC / CO / NO x催化剂的转化效率 ， 分别。 当空气/燃料比传感器的输出振幅变得大于预定值时，确定催化剂变质。 催化剂的转化效率基于HC / CO / NOx的输出振幅和平均转化率之间的预定关系来确定。

公开(公告)号：US5194135A

公开(公告)日：1993-03-16

申请号：US228808

申请日：1988-07-29

申请人： Nobuhiro Hayakawa ,  Ken Minoha ,  Yutaka Adachi ,  Haruhisa Shiomi

发明人： Nobuhiro Hayakawa ,  Ken Minoha ,  Yutaka Adachi ,  Haruhisa Shiomi

IPC分类号： G01N27/406 ,  G01N27/409 ,  G01N27/41 ,  G01N27/417

CPC分类号： G01N27/417

摘要： An air/fuel ratio sensor is described, comprising an oxygen concentration electrochemical cell and an oxygen pump disposed in a face-to-face relationship with a gap being formed therebetween, the side of said electrochemical cell opposite the side facing said oxygen pump being in contact with the atmosphere, said gap forming a gas diffusion compartment that communicates with a gas to be analyzed by a gas diffusion limiting means, wherein the gap existing between said oxygen concentration electrochemical cell and said oxygen pump has a width of no more than 0.22 mm and no less than 0.01 mm.

摘要翻译： 描述了一种空气/燃料比传感器，其包括氧浓度电化学电池和与其间形成间隙的面对面关系设置的氧气泵，所述电化学电池与面对所述氧气泵的一侧相对的侧面处于 与大气接触，所述间隙形成气体扩散室，其通过气体扩散限制装置与待分析的气体连通，其中存在于所述氧浓缩电化学电池和所述氧气泵之间的间隙具有不大于0.22mm的宽度 并且不小于0.01mm。