公开(公告)号：US4472262A

公开(公告)日：1984-09-18

申请号：US381025

申请日：1982-05-24

申请人： Haruyoshi Kondo ,  Keiichi Saji ,  Takashi Takeuchi ,  Yasuhiro Otsuka ,  Toshinobu Furutani ,  Mari Okazaki

发明人： Haruyoshi Kondo ,  Keiichi Saji ,  Takashi Takeuchi ,  Yasuhiro Otsuka ,  Toshinobu Furutani ,  Mari Okazaki

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/409 ,  G01N27/56 ,  G01N27/30 ,  G01N27/58

CPC分类号： G01N27/4065

摘要： An oxygen concentration detector provided with an oxygen concentration sensor further provided with an oxygen ionic conductor, a cathode placed on one surface of the oxygen ionic conductor, an anode placed on the other surface of the oxygen ionic conductor, and a layer convering the cathode for regulating the diffusion of oxygen gas toward the cathode. Temperature compensation is applied to the output of the detector which is inherently influenced by the temperature of the sensor. More specifically, an oxygen concentration detector is provided with the foregoing oxygen concentration sensor, and voltage or current is alternatively supplied to the sensor to measure a limiting current of the sensor and internal resistance of the sensor, and the current or the voltage produced by the foregoing application of voltage or current, and a temperature compensation is applied to the detected magnitude of limiting current according to the internal resistance of the sensor.

摘要翻译： 一种设置有氧浓度传感器的氧浓度检测器，其还设置有氧离子导体，设置在氧离子导体的一个表面上的阴极，放置在氧离子导体的另一表面上的阳极，以及将阴极会聚到 调节氧气向阴极的扩散。 温度补偿被施加到检测器的输出，其本身受到传感器的温度的影响。 更具体地说，氧浓度检测器具有上述氧浓度传感器，并且将电压或电流交替地供应到传感器以测量传感器的限制电流和传感器的内部电阻，以及由该传感器产生的电流或电压 上述施加电压或电流，并且根据传感器的内部电阻对检测到的限制电流的大小进行温度补偿。

公开(公告)号：US4510036A

公开(公告)日：1985-04-09

申请号：US457888

申请日：1983-01-14

申请人： Takashi Takeuchi ,  Hideaki Takahashi ,  Keiichi Saji ,  Haruyoshi Kondo ,  Kiyoharu Hayakawa

发明人： Takashi Takeuchi ,  Hideaki Takahashi ,  Keiichi Saji ,  Haruyoshi Kondo ,  Kiyoharu Hayakawa

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/409 ,  G01N27/58

CPC分类号： G01N27/4065

摘要： The invention provides a limiting electric current type oxygen sensor with a microheater, having: an oxygen ionic conductor; an anode and a cathode respectively formed on two major surfaces of the oxygen ionic conductor; an insulating film which has a porosity of not less than 0.2 [%], an average pore diameter of not less than 140 [.ANG.], and a thickness between 0.2 [.mu.m] and 10 [.mu.m], and which is formed on one of the anode and the cathode so as to regulate a flow rate of oxygen gas and to provide electrical insulation; and the microheater formed on the insulating film. The oxygen ionic conductor is electrically insulated from the microheater through the insulating film. The invention also provides a limiting electric current type oxygen concentration detecting device having the limiting electric current type oxygen sensor and a constant temperature control circuit.

摘要翻译： 本发明提供一种具有微加热器的极限电流型氧传感器，具有：氧离子导体; 分别形成在氧离子导体的两个主表面上的阳极和阴极; 绝缘膜的孔隙率不小于0.2 [％]，平均孔径不小于140 [ANGSTROM]，厚度在0.2μm和10μm之间，并且形成在 阳极和阴极之一，以调节氧气的流量并提供电绝缘; 和形成在绝缘膜上的微加热器。 氧离子导体通过绝缘膜与微加热器电绝缘。 本发明还提供一种具有极限电流型氧传感器和恒温控制电路的极限电流型氧浓度检测装置。

公开(公告)号：US4626338A

公开(公告)日：1986-12-02

申请号：US373257

申请日：1982-04-29

申请人： Haruyoshi Kondo ,  Keiichi Saji ,  Takashi Takeuchi

发明人： Haruyoshi Kondo ,  Keiichi Saji ,  Takashi Takeuchi

IPC分类号： G01N27/406 ,  G01N27/46 ,  G01N27/58

CPC分类号： G01N27/4065

摘要： This oxygen concentration detector employs an oxygen concentration sensor provided with a plate produced of a material which exhibits ionic conduction for oxygen (An oxygen ionic conductor), a cathode placed on the one surface of the oxygen ionic conductor plate, an anode placed on the other surface of the oxygen ionic conductor plate, and a porous material layer which functions to regulate the flow of oxygen which passes through the porous material layer to reach the cathode and the oxygen ionic conductor plate. The improvement realized in this oxygen concentration detector is to remove a drawback in which the output of this sensor makes an error depending on the temperature of a gas of which the oxygen concentration is measured. This oxygen concentration detector is provided with a limiting electric current type oxygen concentration sensor, a means for applying a voltage to the sensor for the purpose to measure a limiting current flowing in the sensor, a means for measuring a current which flows in the sensor responsive to the application of a voltage to the sensor, a means for measuring the internal resistance of the sensor, and a means for regulating at least one of the foregoing three means including a limiting electric current type oxygen concentration sensor, a means for applying a voltage to the sensor and a means for measuring a current flowing in the sensor, flowing the amount of the internal resistance of the sensor detected by the foregoing means for measuring the internal resistance of the sensor.

摘要翻译： 该氧浓度检测器采用氧浓度传感器，该氧浓度传感器设置有由氧气离子导电（氧离子导体），放置在氧离子导体板的一个表面上的阴极，另一个阳极 氧离子导体板的表面，以及用于调节通过多孔材料层到达阴极和氧离子导体板的氧气流的多孔材料层。 在该氧浓度检测器中实现的改进是消除了该传感器的输出根据测量氧浓度的气体的温度产生误差的缺点。 该氧浓度检测器设置有限制电流型氧浓度传感器，用于向传感器施加电压用于测量在传感器中流动的极限电流的装置，用于测量在传感器中流动的电流的装置 对传感器施加电压，用于测量传感器的内部电阻的装置，以及用于调节上述三种装置中的至少一种装置的装置，包括限制电流型氧浓度传感器，用于施加电压的装置 传感器和用于测量在传感器中流动的电流的装置，使用上述用于测量传感器内阻的装置检测到的传感器内阻的流量。

公开(公告)号：US4595485A

公开(公告)日：1986-06-17

申请号：US775741

申请日：1985-09-13

申请人： Hideaki Takahashi ,  Haruyoshi Kondo ,  Keiichi Saji ,  Kiyoharu Hayakawa ,  Takashi Takeuchi

发明人： Hideaki Takahashi ,  Haruyoshi Kondo ,  Keiichi Saji ,  Kiyoharu Hayakawa ,  Takashi Takeuchi

IPC分类号： G01N27/41 ,  G01N27/404 ,  G01N27/406 ,  G01N27/409 ,  G01N27/56

CPC分类号： G01N27/4065

摘要： A limiting electric current type oxygen sensor comprising a first electrode of a gas-permeable film, a thin solid electrolyte film which is crystallized along one direction to decrease resistance and which has a thickness falling in the range between 0.1 .mu.m and 30 .mu.m, and a second electrode of a gas-permeable film sequentially formed on an electrically insulating substrate. This limiting electric current type oxygen sensor is also provided with a porous coating layer or a dense coating layer. The porous coating layer made of Al.sub.2 O.sub.3, SiO.sub.2, spinnel, SiC, Si.sub.3 N.sub.4 and etc., has a porosity of not more than 30% and a thickness of not less than 1 .mu.m, and serves as a gas diffusion flow rate-determining portion. The dense coating layer serves to control a gas permeation path such that either the first electrode or the substrate is used as the gas diffusion flow rate-determining portion.

摘要翻译： 一种限制电流型氧传感器，包括透气膜的第一电极，沿一个方向结晶以降低电阻并且具有落在0.1μm至30μm之间的厚度的薄固体电解质膜， 以及依次形成在电绝缘基板上的透气膜的第二电极。 该极限电流型氧传感器还设置有多孔涂层或致密涂层。 由Al2O3，SiO2，尖晶石，SiC，Si3N4等制成的多孔涂层的孔隙率不大于30％，厚度不小于1μm，用作气体扩散流速确定部分 。 致密涂层用于控制气体渗透路径，使得第一电极或基板用作气体扩散流速确定部分。

公开(公告)号：US4576705A

公开(公告)日：1986-03-18

申请号：US613969

申请日：1984-05-24

申请人： Haruyoshi Kondo ,  Hideaki Takahashi ,  Keiichi Saji ,  Takashi Takeuchi ,  Kiyoharu Hayakawa

发明人： Haruyoshi Kondo ,  Hideaki Takahashi ,  Keiichi Saji ,  Takashi Takeuchi ,  Kiyoharu Hayakawa

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/48 ,  G01N33/00

CPC分类号： G01N27/4065

摘要： An apparatus for detecting concentrations of a plurality of gas components has a single polarographic sensor capable of detecting an oxygen concentration and a composite concentration of oxygen gas, carbon dioxide gas and steam. A first voltage is applied to the polarographic sensor which then measures only the oxygen concentration, or a second voltage is applied to the sensor which then measures only the composite concentration of oxygen gas, carbon dioxide gas and steam. The first and second voltages are applied to the sensor in a time division manner. Upon application of first and second voltages in such a time division manner, corresponding currents flowing through the sensor are detected to obtain signals corresponding to the oxygen concentration and the composite concentration of oxygen gas, carbon dioxide gas and steam. The signal corresponding to the oxygen concentration is subtracted by an operational amplifier from the signal corresponding to the composite concentration of oxygen gas, carbon dioxide gas and steam, thereby obtaining a signal representing a composite concentration of carbon dioxide gas and steam.

摘要翻译： 用于检测多个气体组分的浓度的装置具有能够检测氧浓度和氧气，二氧化碳气体和蒸汽的复合浓度的单个极谱传感器。 将第一电压施加到极谱传感器，其然后仅测量氧浓度，或者将第二电压施加到传感器，然后传感器仅测量氧气，二氧化碳气体和蒸汽的复合浓度。 以时分方式将第一和第二电压施加到传感器。 以这种时分方式施加第一和第二电压时，检测流过传感器的对应电流，以获得对应于氧浓度和氧气，二氧化碳气体和蒸汽的复合浓度的信号。 对应于氧浓度的信号由运算放大器从对应于氧气，二氧化碳气体和蒸汽的复合浓度的信号中减去，从而获得表示二氧化碳气体和蒸汽的复合浓度的信号。

公开(公告)号：US5480535A

公开(公告)日：1996-01-02

申请号：US174126

申请日：1993-12-27

申请人： Haruyoshi Kondo ,  Hideaki Takahashi ,  Keiichi Saji ,  Masaharu Takeuchi ,  Kozo Satta

发明人： Haruyoshi Kondo ,  Hideaki Takahashi ,  Keiichi Saji ,  Masaharu Takeuchi ,  Kozo Satta

IPC分类号： G01N27/407 ,  G01N27/417 ,  G01N27/41 ,  G01N27/409

CPC分类号： G01N27/4071 ,  G01N27/417

摘要： A thin film mutilayered air-fuel ratio sensor having a sensor element including a first electrode formed on a porous substrate, a first solid electrolyte and a third electrode formed on the first electrode in this order, in such a manner that the first electrode is completely covered by the first solid electrolyte inclusive of its surroundings, and that the first solid electrolyte is completely covered by the third electrode inclusive of its surroundings, a second solid electrolyte and a fourth electrode and formed on the third electrode in this order, in such a manner that the peripheral portion of the third electrode is left uncovered by the second solid electrolyte and the fourth electrode and thereby left exposed. The first electrode, the third electrode, and the fourth electrode are made of a gas-permeable porous platinum, and the first solid electrolyte and the second solid electrolyte are made of a gas-permeable dense solid electrolyte having oxygen ion conductivity. The sensor has far improved performance as compared to the conventional ones and can be made compact.

摘要翻译： 一种具有传感器元件的薄膜多层空气燃料比传感器，其传感器元件包括形成在多孔基材上的第一电极，第一固体电解质和形成在第一电极上的第三电极，以使得第一电极完全 被包围其周围的第一固体电解质覆盖，并且第一固体电解质被包括其周围的第三电极完全覆盖，第二固体电解质和第四电极，并且以这种顺序形成在第三电极上 使得第三电极的周边部分不被第二固体电解质和第四电极覆盖，从而露出。 第一电极，第三电极和第四电极由透气性多孔铂制成，第一固体电解质和第二固体电解质由具有氧离子传导性的透气性致密固体电解质构成。 该传感器与常规传感器相比具有非常好的性能，并且可以使其紧凑。

公开(公告)号：US4844788A

公开(公告)日：1989-07-04

申请号：US263875

申请日：1988-10-28

申请人： Hideaki Takahashi ,  Haruyoshi Kondo ,  Keiichi Saji

发明人： Hideaki Takahashi ,  Haruyoshi Kondo ,  Keiichi Saji

IPC分类号： G01N27/41 ,  F02D41/14 ,  G01N27/00 ,  G01N27/12 ,  G01N27/409 ,  G01N27/416 ,  G01N27/419

CPC分类号： F02D41/1455 ,  G01N27/122

摘要： An air/fuel ratio sensor has a porous alumina substrate, a limiting current type oxygen detecting section on the porous alumina substrate for detecting the air/fuel ratio in the fuel lean region, a resistance-variable type oxygen detecting section on the porous alumina substrate for detecting the excess air ratio .lambda. when .lambda. is equal to one, a gas decomposition type hydrogen detecting section on the porous alumina substrate for detecting the air/fuel ratio in the fuel rich region and a heater for heating the respective detecting sections to the optimum temperature in operation, whereby the sensor can detect the air/fuel ratio over all the fuel rich and lean regions.In addition the apparatus includes a comparing/discriminating section for comparing the output of the resistance-variable type oxygen detection section with a reference value to discriminate whether the ambient atmosphere is in either of the fuel rich or lean region, a switching control section for changing each of the limiting current type oxygen detecting section from its operative position to its inoperative position or vice versa, depending on the result from the comparing/discriminating section, and an output signal adding section for adding the output signals from both the detecting sections to generate an output signal representative of an air/fuel ratio.

摘要翻译： 空气/燃料比传感器具有多孔氧化铝基板，多孔氧化铝基板上的限制电流型氧检测部，用于检测稀燃区域中的空燃比，多孔氧化铝基板上的电阻变化型氧检测部 用于在λ等于1时检测过剩空气比λ;在多孔氧化铝衬底上用于检测富燃区域中的空燃比的气体分解型氢气检测部分，以及用于将各检测部分加热到最佳状态的加热器 运行温度，从而传感器可以检测所有富燃料区和贫气区的空燃比。 此外，该装置包括比较/鉴别部分，用于将电阻变化型氧气检测部分的输出与参考值进行比较，以鉴别环境气氛是否处于富燃料区域或贫气区域中的任何一个;切换控制部分，用于改变 每个极限电流型氧检测部分从其操作位置到其不工作位置，反之亦然，这取决于比较/鉴别部分的结果，以及输出信号添加部分，用于将来自两个检测部分的输出信号相加以产生 表示空燃比的输出信号。

公开(公告)号：US4993386A

公开(公告)日：1991-02-19

申请号：US459421

申请日：1989-12-29

申请人： Toshihiro Ozasa ,  Shigeo Suzuki ,  Keiichi Saji ,  Haruyoshi Kondo ,  Hideaki Takahashi

发明人： Toshihiro Ozasa ,  Shigeo Suzuki ,  Keiichi Saji ,  Haruyoshi Kondo ,  Hideaki Takahashi

IPC分类号： F01M3/02 ,  F01P7/16 ,  F02B1/02 ,  F02B1/04 ,  F02B3/06 ,  F02B19/08 ,  F02B75/02 ,  F02D15/04 ,  F02D19/12 ,  F02D41/00

CPC分类号： F02D15/04 ,  F01M3/02 ,  F01P7/16 ,  F02B1/02 ,  F02B19/08 ,  F02D19/084 ,  F02D19/088 ,  F02D19/12 ,  F02D41/0025 ,  F01P2023/08 ,  F02B1/04 ,  F02B2075/025 ,  F02B3/06 ,  F02D19/0655 ,  F02D19/0665 ,  F02D19/0692 ,  F02D19/081 ,  F02D2200/0612 ,  F02D2400/04 ,  Y02T10/125 ,  Y02T10/36

摘要： An operation control system for an engine using alcohol fuel or mixed fuel of alcohol and hydrocarbon, or for an engine supplying cooling liquid such as alcohol, water or the like as fuel. Vapor concentration in exhaust gas and an air excess ratio of air-fuel mixture are detected, and a supply rate of alcohol, a water absorption ratio of alcohol or an amount of the cooling liquid is computed on the basis of the vapor concentration and the air excess ratio. Ignition timing, temperature of the coolant, a compression ratio and an air excess ratio are controlled on the basis of the supply rate of alcohol or the water absorption ratio of alcohol. Further, the cooling liquid is supplied which has its amount computed at a heavy load. Thus, operational performance of the engine is improved.

摘要翻译： 使用酒精燃料或醇和碳氢化合物的混合燃料的发动机的操作控制系统，或用于将诸如酒精，水等的冷却液作为燃料的发动机。 检测废气中的气体浓度和空气 - 燃料混合物的空气过剩率，并且基于蒸气浓度和空气计算醇的供应速率，醇的吸水率或冷却液的量 超额比例。 基于酒精的供给速率或酒精的吸水率来控制点火正时，冷却剂的温度，压缩比和空气过剩率。 此外，提供冷却液，其具有在重负荷下计算的量。 因此，提高了发动机的操作性能。

公开(公告)号：US20050061670A1

公开(公告)日：2005-03-24

申请号：US10944426

申请日：2004-09-20

申请人： Akio Tanaka ,  Toshitaka Saito ,  Tadashi Nakamura ,  Tadashi Inaba ,  Keiichi Saji ,  Jiro Sakata

发明人： Akio Tanaka ,  Toshitaka Saito ,  Tadashi Nakamura ,  Tadashi Inaba ,  Keiichi Saji ,  Jiro Sakata

IPC分类号： G01N27/41 ,  G01N27/416 ,  G01N27/419 ,  G01N27/26

CPC分类号： G01N27/419 ,  Y10T29/49002

摘要： A NOx sensing cell includes a solid electrolyte having oxide ion conductivity and a pair of electrodes electrically connected to the solid electrolyte. The measuring electrode includes an oxide portion and a noble metallic portion. The oxide portion includes the solid solution of zirconia containing at least ceria. The noble metallic portion contains at least two kinds of metallic elements selected from platinum group elements. In addition to the NOx sensing cell, a NOx sensing device includes a measuring chamber into which a sensing objective gas is introduced, and an oxygen pump cell which is capable of electrochemically removing the oxygen from the measuring chamber. The measuring electrode of the NOx sensing cell is positioned in the measuring chamber.

摘要翻译： NOx感测单元包括具有氧化物离子传导性的固体电解质和与固体电解质电连接的一对电极。 测量电极包括氧化物部分和贵金属部分。 氧化物部分包括至少含有二氧化铈的氧化锆固溶体。 贵金属部分含有选自铂族元素中的至少两种金属元素。 除了NOx感测单元之外，NOx感测装置还包括测量室，导入检测对象气体的测量室以及能够从测量室电化学除去氧气的氧气泵室。 NOx感测单元的测量电极位于测量室中。

公开(公告)号：US5814719A

公开(公告)日：1998-09-29

申请号：US788758

申请日：1997-01-24

申请人： Takayuki Suzuki ,  Hozumi Futata ,  Koji Moriya ,  Takahiro Sako ,  Hideaki Takahashi ,  Keiichi Saji

发明人： Takayuki Suzuki ,  Hozumi Futata ,  Koji Moriya ,  Takahiro Sako ,  Hideaki Takahashi ,  Keiichi Saji

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/00

CPC分类号： G01N27/4075

摘要： An oxygen sensor of a limiting current type includes a sensing element coated with a porous coating layer having a catalyst supported thereon. The catalyst includes at least one element selected from the group consisting of platinum, rhodium, palladium, iridium and ruthenium, and the content of the catalyst is not more than 50 wt % with respect to the total weight of the porous coating layer, and particles of the catalyst are dispersed within the porous coating layer at spacings of not more than 6 .mu.m. By using the catalyst, the influence of hydrocarbons to the oxygen concentration is reduced.

摘要翻译： 极限电流型的氧传感器包括涂覆有多个被覆载体的催化剂层的传感元件。 催化剂包括选自铂，铑，钯，铱和钌中的至少一种元素，并且催化剂的含量相对于多孔涂层的总重量为不大于50重量％，并且颗粒 的催化剂以不大于6μm的间隔分散在多孔涂层内。 通过使用催化剂，可以降低烃对氧浓度的影响。