公开(公告)号：US4313810A

公开(公告)日：1982-02-02

申请号：US53181

申请日：1979-06-27

申请人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： G01N27/409 ,  B01D53/86 ,  B01D53/94 ,  F23N5/00 ,  G01N27/406 ,  G01N27/407 ,  G01N27/413 ,  G01N27/58

CPC分类号： G01N27/407 ,  F23N5/006 ,  G01N27/4065

摘要： An oxygen concentration sensing apparatus in which a block of an oxygen-ion conductive solid electrolyte is interposed between a first electrode and a second electrode disposed opposite to each other. The first electrode is made of a catalytic metal and is exposed at a portion thereof on a surface of the solid electrolyte block, and an electrical insulating heat-resistive layer having a plurality of communication pores covers the exposed portion of the first electrode. The second electrode is porous and made of a catalytic metal. The solid electrolyte is wholly exposed to a stream of gases containing oxygen whose concentration is to be measured, and during measurement, a current source supplies continuously an electric current in a direction from the first electrode toward the second electrode. When the partial pressure of oxygen gas produced at the first electrode and existing in the vicinity thereof exceeds a predetermined value, the excess pressure portion of oxygen gas is discharged into the stream of gases through the communication pores of the heat-resistive layer thereby maintaining substantially constant the partial pressure of oxygen gas in the vicinity of the first electrode. An electromotive force representing the ratio between the partial pressure of oxygen around the first electrode and that in the stream of gases containing oxygen is measured to determine the concentration of oxygen contained in the gases.

摘要翻译： 一种氧浓度检测装置，其中氧离子传导性固体电解质块插入在彼此相对设置的第一电极和第二电极之间。 第一电极由催化金属制成，并在其一部分暴露在固体电解质块的表面上，具有多个连通孔的电绝缘耐热层覆盖第一电极的暴露部分。 第二电极是多孔的并由催化金属制成。 固体电解质完全暴露于含有浓度要测量的氧气的气流中，并且在测量期间，电流源在从第一电极朝向第二电极的方向上连续供给电流。 当在第一电极处产生的并且存在于其附近的氧气的分压超过预定值时，氧气的过量压力部分通过耐热层的连通孔排放到气流中，从而基本上保持 使第一电极附近的氧气的分压恒定。 测量表示第一电极周围的氧分压与含氧气体流之间的比率的电动势，以确定气体中所含的氧浓度。

公开(公告)号：US4220517A

公开(公告)日：1980-09-02

申请号：US24773

申请日：1979-03-28

申请人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

发明人： Hitoshi Niwa ,  Naoto Miwa ,  Masatoshi Suzuki ,  Masami Ouki

IPC分类号： G01N27/409 ,  G01N27/407 ,  G01N27/58

CPC分类号： G01N27/4075

摘要： In an oxygen concentration sensing apparatus comprising a solid, oxygen ion conductive, electrolyte and intervening between two electrodes to generate across the two electrodes a potential difference due to a difference in oxygen concentrations at the boundaries between the two electrodes and the solid electrolyte, one of the two electrodes is made of a metal performing catalytic action, one end portion of the one electrode is embedded in the solid electrolyte to be fixed thereby, the other end portion of the one electrode projects outwardly of the solid electrolyte, a portion of the one electrode contacting with an outer surface of the solid electrolyte is hermetically sealed with a nonconductive layer of a heat-resistant material, and the other electrode is made of a porous metal performing catalytic action and is disposed on the outer surface of the solid electrolyte but preventing the other electrode from being in contact with the one electrode.Further, the oxygen concentration sensing apparatus may be provided with an electric circuit for making an electric current flow intermittently from the one electrode through the solid electrolyte to the other electrode thereby to maintain the oxygen concentration at the boundary between the one electrode and the solid electrolyte at a constant level.

摘要翻译： 在包含固体，氧离子导电，电解质和介于两个电极之间的氧浓度感测装置中，在两个电极之间产生由于两个电极和固体电解质之间的边界处的氧浓度差异而产生的电位差， 两个电极由执行催化作用的金属制成，一个电极的一个端部嵌入固体电解质中以固定，一个电极的另一个端部突出于固体电解质的外部，一部分 与固体电解质的外表面接触的电极用耐热材料的非导电层气密密封，另一个电极由执行催化作用的多孔金属制成，并且设置在固体电解质的外表面上，但是防止 另一个电极与一个电极接触。 此外，氧浓度检测装置可以设置有用于使电流从一个电极通过固体电解质间歇地流动到另一个电极的电路，从而保持在一个电极和固体电解质之间的边界处的氧浓度 在一个恒定的水平。

公开(公告)号：US4219359A

公开(公告)日：1980-08-26

申请号：US22929

申请日：1979-03-21

申请人： Naoto Miwa ,  Masami Ouki ,  Katsuhiko Tanaka ,  Masatosi Suzuki

发明人： Naoto Miwa ,  Masami Ouki ,  Katsuhiko Tanaka ,  Masatosi Suzuki

IPC分类号： C04B35/48 ,  C04B35/486 ,  G01N27/12 ,  G01N27/407 ,  H01M8/12 ,  G01N27/58

CPC分类号： G01N27/4073 ,  C04B35/486 ,  H01M8/1253 ,  Y02E60/525 ,  Y02P70/56

摘要： A sintered body of zirconia material for an oxygen concentration sensor exhibiting an electromotive force in accordance with the difference in the concentration of oxygen between a gas tested and a reference gas, consisting essentially of partially stabilized sintered zirconia and at least one additive selected from the group of yttrium oxide, calcium oxide and ytterbium oxide which zirconia has a cubic phase and a monoclinic phase existing in mingling relation. The ratio of the X-ray diffraction intensity of the surface (111) of the monoclinic phase to the X-ray diffraction intensity of the surface (111) of the cubic phase or the ratio I(111)/I(111) is in the range between 0.05 and 0.40, and the value of the X-ray diffraction intensity ratio caused by heating the sintered zirconia material to, and holding the same at, the temperature range between 200.degree. and 300.degree. C. minus the former ratio of the X-ray diffraction intensity is in the range between -0.05 and +0.10.

摘要翻译： 一种用于氧浓度传感器的氧化锆材料烧结体，其表现出根据测试气体和参考气体之间的氧气浓度差的电动势，其基本上由部分稳定的烧结氧化锆和至少一种选自下组的添加剂组成： 的氧化钇，氧化钙和氧化镱，氧化锆具有立方相和单相相位存在的混合关系。 单斜晶相表面（111）的X射线衍射强度与立方相的表面（111）的X射线衍射强度或I（111）/ I（111）的比例在 0.05〜0.40之间的范围，以及通过将烧结的氧化锆材料加热并保持在200℃至300℃之间的温度范围内引起的X射线衍射强度比值减去先前的 X射线衍射强度在-0.05至+0.10之间。

公开(公告)号：US4435512A

公开(公告)日：1984-03-06

申请号：US324571

申请日：1981-11-24

申请人： Kazuyuki Ito ,  Masami Ouki ,  Naoto Miwa ,  Osami Kamigaito ,  Haruo Doi ,  Yoshiharu Hirose

发明人： Kazuyuki Ito ,  Masami Ouki ,  Naoto Miwa ,  Osami Kamigaito ,  Haruo Doi ,  Yoshiharu Hirose

IPC分类号： B01J37/00 ,  B28B3/20 ,  B32B18/00 ,  C04B35/16 ,  C04B35/195 ,  C04B35/04 ,  C04B35/10

CPC分类号： C04B35/195 ,  B01J37/0009 ,  Y10T428/24149

摘要： A process for producing a cordierite ceramic product comprises blending a starting cordierite composition which comprises:(a) a clay formulation having a cordierite composition comprising kaolin, talc and aluminium oxide and/or an aluminium compound which is convertible into aluminium oxide;(b) a glass having a cordierite composition;(c) an organic binder; and,(d) water.

摘要翻译： 一种生产堇青石陶瓷产品的方法包括混合起始堇青石组合物，其包括：（a）具有包含高岭土，滑石和氧化铝的堇青石组合物和/或可转化为氧化铝的铝化合物的粘土制剂; （b）具有堇青石组合物的玻璃; （c）有机粘合剂; 和（d）水。

公开(公告)号：US4685437A

公开(公告)日：1987-08-11

申请号：US772904

申请日：1985-09-05

申请人： Toshiaki Tanaka ,  Hitoshi Niwa ,  Hirokatsu Mukai ,  Naoto Miwa ,  Akio Nara ,  Etsuji Nomura ,  Makoto Hori ,  Koichi Hasegawa ,  Hiroshi Noguchi

发明人： Toshiaki Tanaka ,  Hitoshi Niwa ,  Hirokatsu Mukai ,  Naoto Miwa ,  Akio Nara ,  Etsuji Nomura ,  Makoto Hori ,  Koichi Hasegawa ,  Hiroshi Noguchi

IPC分类号： F02B3/06 ,  F02M29/04 ,  F02M31/13 ,  F02M31/12

CPC分类号： F02M31/13 ,  F02M29/04 ,  F02B3/06 ,  Y02T10/126

摘要： An air heater for heating intake air for an internal combustion engine only in cold start or further warming up operation, having a frame which defines an opening for passing air therethrough, and at least one heater element in the shape of a perforated plate such as a lattice or honeycomb plate supported by the frame so as to traverse only a part of the opening area of the air passage opening, while leaving a substantial part of the opening area free as untraversed by the heater element.

摘要翻译： 一种空气加热器，其仅在冷启动或进一步预热操作中为内燃机的进气供暖，其具有限定用于使空气通过的开口的框架，以及至少一个多孔板形状的加热元件，例如 格架或蜂窝板由框架支撑，以便只穿过空气通道开口的开口区域的一部分，同时使打开区域的大部分自由未被加热器元件拉开。

公开(公告)号：US4834052A

公开(公告)日：1989-05-30

申请号：US96242

申请日：1987-09-08

申请人： Makoto Hori ,  Hitoshi Niwa ,  Hirokatsu Mukai ,  Toshiatsu Nagaya ,  Naoto Miwa ,  Itsuhei Ogata

发明人： Makoto Hori ,  Hitoshi Niwa ,  Hirokatsu Mukai ,  Toshiatsu Nagaya ,  Naoto Miwa ,  Itsuhei Ogata

IPC分类号： C04B35/468 ,  F02M31/135 ,  H01C7/02 ,  H05B3/14

CPC分类号： H01C7/025 ,  C04B35/4682 ,  F02M31/135 ,  H05B3/141 ,  Y02T10/126

摘要： Anti-reducing semiconducting porcelain having a positive temperature coefficient of resistance comprises a barium titanate composition, and a flux containing 0.14 to 2.88 parts by weight of TiO.sub.2 0.1 to 1.6 parts by weight of Al.sub.2 O.sub.3 and 0.1 to 1.6 parts by weight of SiO.sub.2 per 100 parts by weight of the barium titanate composition. It has a high positive temperature coefficient of resistance which does not show any appreciable change in the presence of a reducing atmosphere, such as hydrogen gas or gasified gasoline. It need not be isolated from a reducing atmosphere by a plastic or metallic enclosure, but can be exposed thereto. The flux may further contain a zinc, potassium or lithium compound.

摘要翻译： 具有正温度系数电阻的抗还原性半导体陶瓷包含钛酸钡组合物，含有0.14〜2.88重量份TiO 2 + L，0.1〜1.6重量份Al 2 O 3和0.1〜1.6重量份SiO 2 每100重量份的钛酸钡组合物。 具有高正温度系数的电阻，在还原性气氛如氢气或气化汽油的存在下不显示任何明显的变化。 它不需要通过塑料或金属外壳从还原气氛中分离，但可以暴露于其中。 焊剂还可以含有锌，钾或锂化合物。

公开(公告)号：US4831432A

公开(公告)日：1989-05-16

申请号：US19972

申请日：1987-02-27

申请人： Makoto Hori ,  Itsuhei Ogata ,  Hitoshi Niwa ,  Naoto Miwa

发明人： Makoto Hori ,  Itsuhei Ogata ,  Hitoshi Niwa ,  Naoto Miwa

IPC分类号： H01C1/14

CPC分类号： H01C1/1406

摘要： A positive ceramic semiconductor device having positive temperature coefficient of resistance comprises a pair of electrodes provided on a ceramic semiconductor substrate. One of the paired electrodes which is to serve as the positive pole is basically constituted by at least an electrically conductive layer of silver-palladium series containing silver and palladium at a predetermined ratio. For preventing a localized current concentration from occurring in the current conducting state, improvement is made as the structure of the positive pole electrode ormed of the electrically conductive material of silver-palladium series and/or the structure of the negative pole electrode. Silver-migration phenomenon on the positive ceramic semiconductor substrate as well as degradation of the mechanical strength thereof is positively prevented.

摘要翻译： 具有正温度系数电阻的正陶瓷半导体器件包括设置在陶瓷半导体衬底上的一对电极。 用作正极的成对电极中的一个基本上由至少包含以规定比例含有银和钯的银 - 钯系列的导电层构成。 为了防止在电流导通状态下发生局部电流集中，作为负极电极的结构或者银 - 钯系的导电材料的结构和/或负极电极的结构的改进。 积极地防止正极陶瓷半导体衬底上的银迁移现象以及其机械强度的劣化。

公开(公告)号：US4716279A

公开(公告)日：1987-12-29

申请号：US771053

申请日：1985-08-30

申请人： Makoto Hori ,  Toshiatsu Nagaya ,  Hirokatsu Mukai ,  Hitoshi Niwa ,  Naoto Miwa

发明人： Makoto Hori ,  Toshiatsu Nagaya ,  Hirokatsu Mukai ,  Hitoshi Niwa ,  Naoto Miwa

IPC分类号： H01C7/02 ,  H05B3/00 ,  H05B3/14 ,  H05B3/22 ,  H05B1/02

CPC分类号： H05B3/22 ,  H05B3/141

摘要： A self-temperature controlling type heating device comprises a positive temperature coefficient ceramic resistor having a thin layer portion, a first electrode provided on one face of the thin layer portion, a second electrode provided on the other face of the thin layer portion opposite to the first electrode, and at least one third electrode provided on the surface of the PTC ceramic resistor in spaced relation to the first electrode. An electric current is allowed to flow between the first and second electrodes to form a heating element, and an electric resistance value between the first and third electrodes is detected to thereby make a temperature control. Thus, a high output is obtained at a low voltage and the control temperature is freely varied.

摘要翻译： 一种自温度控制型加热装置，包括具有薄层部分的正温度系数陶瓷电阻器，设置在薄层部分的一个面上的第一电极，设置在薄层部分相对的薄层部分的另一个面上的第二电极 第一电极和至少一个第三电极，其设置在PTC陶瓷电阻器的与第一电极间隔开的表面上。 允许电流在第一和第二电极之间流动以形成加热元件，并且检测第一和第三电极之间的电阻值，从而进行温度控制。 因此，在低电压下获得高输出，并且控制温度可自由变化。

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：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。