公开(公告)号：US06303011B1

公开(公告)日：2001-10-16

申请号：US09099401

申请日：1998-06-18

申请人： Yunzhi Gao ,  Yukio Nakanouchi ,  Akira Kunimoto ,  Masaharu Hasei ,  Yongtie Yan ,  Takashi Ono

发明人： Yunzhi Gao ,  Yukio Nakanouchi ,  Akira Kunimoto ,  Masaharu Hasei ,  Yongtie Yan ,  Takashi Ono

IPC分类号： G01N27407

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

摘要： A nitrogen oxide sensor includes a solid electrolytic substrate exhibiting oxygen ion conductivity, a noble-metal reference electrode, which is active only to oxygen, formed on one side of the solid electrolytic substrate, and a sensing electrode, which is active to NOx and oxygen, formed on the opposite side of the solid electrolytic substrate. A potential difference across the sensing electrode and the reference electrode is output as a signal indicative of NOx concentration. Nitrogen oxides in a gas to be examined or measured gas are converted to NO2 and to peroxides of nitrogen such as N2O5 and NO3, after which the nitrogen oxides in the gas to be examined or measured gas are sensed by the sensing electrode as the peroxides of nitrogen such as N2O5 and NO3 or as a mixed gas of NO2 and the peroxides of nitrogen.

摘要翻译： 氮氧化物传感器包括显示氧离子传导性的固体电解质基质，形成在固体电解质基材的一侧上的仅对氧有活性的贵金属参比电极和对NOx和氧有活性的感测电极 形成在固体电解质基板的相反侧。 输出感测电极和参考电极两端的电位差作为表示NOx浓度的信号。 要检测或测量的气体中的氮氧化物被转化为NO 2和氮过氧化物，例如N 2 O 5和NO 3，之后待检测气体中的氮氧化物或测量气体由感测电极作为过氧化物 氮气，如N2O5和NO3，或作为NO2和氮过氧化物的混合气体。

公开(公告)号：US5897759A

公开(公告)日：1999-04-27

申请号：US711463

申请日：1996-09-11

申请人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Noboru Yamazoe ,  Norio Miura

发明人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Noboru Yamazoe ,  Norio Miura

IPC分类号： G01N27/407

CPC分类号： G01N27/4074

摘要： The present invention discloses a NOx sensor consisting at least of a pair of the first and the second electrodes formed in touch with an ion conductive solid electrolyte; wherein at least the first electrode is selected from hybrid oxides having perovskite structure expressed by MSnO.sub.3 (M is at least an element selected from Mg, Ca, Sr, Ba, Mn, Co, Ni, Zn and Cd, hybrid oxides having pseudo-perovskite structure expressed by M.sub.2 SnO.sub.4 (M is at least an element selected from Mg, Ca, Sr, Ba, Mn, Co, Zn and Cd) or a substance containing said hybrid oxides and the second electrode is selected from a noble metal or a electro conductive ceramics which does not have electro conductivity in the atmosphere of NOx and the concentration of NOx in the test gas is detected by the change of the electromotive force between the first and second electrodes.

摘要翻译： 本发明公开了一种NOx传感器，其至少包括与离子导电固体电解质接触形成的一对第一和第二电极; 其中至少第一电极选自由MSnO3（M至少选自Mg，Ca，Sr，Ba，Mn，Co，Ni，Zn和Cd的元素）表示的钙钛矿结构的混合氧化物，具有伪钙钛矿的杂化氧化物 由M 2 SnO 4表示的结构（M是选自Mg，Ca，Sr，Ba，Mn，Co，Zn和Cd中的至少一种元素）或含有所述杂化氧化物的物质和第二电极选自贵金属或导电 通过第一和第二电极之间的电动势的变化来检测在NOx气氛中不具有导电性的陶瓷和测试气体中的NOx的浓度。

公开(公告)号：US06773565B2

公开(公告)日：2004-08-10

申请号：US09884340

申请日：2001-06-20

申请人： Akira Kunimoto ,  Takashi Ono ,  Masaharu Hasei

发明人： Akira Kunimoto ,  Takashi Ono ,  Masaharu Hasei

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N27/4075

摘要： The present invention discloses a NOx sensor for accurately detecting the total concentration of nitrogen oxides in a measured gas without being affected by interference gases. The sensor comprises a gas treatment chamber 5 arranged at the prior stage of the gas detection chamber 3, an inorganic porous member 25 loaded in the gas treatment chamber, and a NOx conversion pumping cell 14, 15 and/or an oxygen supplying pumping cell which supplies oxygen into the gas treatment chamber. When the measured gas is introduced in the gas treatment chamber, the interference gases contained in the measured gas are effectively oxidized by the supplied oxygen under the assistance of the catalytic activity of inorganic porous member. The total amount of the nitrogen oxides is measured in the gas detection chamber while NOx in the measured gas are converted into a single component (NO2 or NO) by the NOx conversion pumping cell after the interference gases are oxidized.

摘要翻译： 本发明公开了一种用于在不受干扰气体影响的情况下精确地检测测定气体中的氮氧化物的总浓度的NOx传感器。 该传感器包括设置在气体检测室3的前一阶段的气体处理室5，装载在气体处理室中的无机多孔构件25，和/或氧气供给泵浦单元 向气体处理室供氧。 当测量的气体被引入气体处理室中时，在无机多孔构件的催化活性的帮助下，所测量的气体中包含的干扰气体被供给的氧气有效地氧化。 在气体检测室中测量氮氧化物的总量，同时在干扰气体被氧化之后，通过NOx转化泵送单元将测量气体中的NOx转化为单一成分（NO2或NO）。

公开(公告)号：US06319377B1

公开(公告)日：2001-11-20

申请号：US09191109

申请日：1998-11-13

申请人： Masaharu Hasei ,  Yongtie Yan ,  Yunzhi Gao ,  Takashi Ono ,  Akira Kunimoto

发明人： Masaharu Hasei ,  Yongtie Yan ,  Yunzhi Gao ,  Takashi Ono ,  Akira Kunimoto

IPC分类号： G01N27407

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

摘要： A nitrogen oxide sensor enabled to enhance the measurement concentration of a total of nitrogen oxides by oxidizing or reducing the nitrogen oxides on the surfaces of electrodes in addition to the control of an oxygen concentration by an oxygen pump. An electrode (3a) in a gas chamber (18) constructing an oxygen pumping portion (3) is made of a material (e.g., Pt-3 wt % Rh) having a function to oxidize a nitrogen oxide gas.

摘要翻译： 氮氧化物传感器除了通过氧气泵控制​​氧气浓度之外，还能够通过氧化或还原电极表面上的氮氧化物来增强总氮氧化物的测量浓度。 构成氧抽吸部（3）的气室（18）中的电极（3a）由具有氧化氮氧化物气体的功能的材料（例如Pt-3重量％Rh）构成。

公开(公告)号：US06787014B2

公开(公告)日：2004-09-07

申请号：US10266918

申请日：2002-10-09

申请人： Masaharu Hasei ,  Akira Kunimoto ,  Yongtie Yan ,  Takashi Ono

发明人： Masaharu Hasei ,  Akira Kunimoto ,  Yongtie Yan ,  Takashi Ono

IPC分类号： G01N27407

CPC分类号： G01N27/4074

摘要： A gas-detecting element comprising an oxygen-ion-conductive solid electrolyte substrate, a sensing electrode fixed onto said solid electrolyte substrate and active with a detection object gas and oxygen, and a reference electrode fixed onto said solid electrolyte substrate and active with at least oxygen, for detecting potential difference between the sensing electrode and the reference electrode to determine the concentration of the detection object gas, the sensing electrode and/or the reference electrode being covered by an electrode-coating layer made of an oxygen-ion-conductive solid electrolyte, and the electrode-coating layer having a portion bonded to the solid electrolyte substrate directly or via an electrode underlayer made of an oxygen-ion-conductive solid electrolyte.

摘要翻译： 一种气体检测元件，包括氧离子传导性固体电解质基材，固定在所述固体电解质基材上并具有检测对象气体和氧气的感测电极，以及固定在所述固体电解质基板上的参考电极，至少具有活性 氧，用于检测感测电极和参考电极之间的电位差，以确定检测对象气体的浓度，感测电极和/或参考电极被由氧离子导电固体制成的电极涂层覆盖 电解质，并且具有直接或通过由氧离子传导性固体电解质制成的电极底层部分结合到固体电解质基底的部分的电极涂覆层。

公开(公告)号：US6019881A

公开(公告)日：2000-02-01

申请号：US160344

申请日：1998-09-25

申请人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Yukio Nakanouchi

发明人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Yukio Nakanouchi

IPC分类号： G01N27/409 ,  G01N27/406 ,  G01N27/407 ,  G01N27/416

CPC分类号： G01N27/4075

摘要： The present invention discloses a NO.sub.x sensor consisting at least of a pair of the first and the second electrodes formed in touch with an oxygen conductive solid electrolyte; wherein at least the first elelctrode is composed of oxides of an element selected from 7a Group or 8 Group, especially from Mn, Fe, Co, and Ni or a substance containing said oxides or of hybrid oxides (including the one of oxygen deficiency expressed by ABO.sub.3, AB.sub.2 O.sub.4, A.sub.2 BO.sub.4 and ACBO.sub.4 including 7a Group and 8 Group. A NO.sub.x sensor acording to the present invention has a good sensitivity without being affected by the concentration of CO.sub.2 and detects NO.sub.x concentration in an exhaust gas at a temperature above 600.degree. C.

摘要翻译： 本发明公开了一种NOx传感器，其至少包括与导电固体电解质接触形成的一对第一和第二电极; 其特征在于，至少所述第一电极由选自7a组或8组的元素的氧化物，特别是Mn，Fe，Co和Ni组成，或含有所述氧化物或杂化氧化物的物质（包括由 ABO3，AB2O4，A2B4和ACBO4，包括7a组和8组。根据本发明的NOx传感器具有良好的灵敏度，不受CO 2浓度的影响，并且检测在高于600℃的温度下的废气中的NOx浓度 C。

公开(公告)号：US06413397B2

公开(公告)日：2002-07-02

申请号：US09828894

申请日：2001-04-10

申请人： Masaharu Hasei ,  Yongtie Yan ,  Akira Kunimoto

发明人： Masaharu Hasei ,  Yongtie Yan ,  Akira Kunimoto

IPC分类号： G01N27407

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

摘要： A nitrogen oxide gas sensor wherein an alloy electrode of platinum and rhodium or a cermet electrode of platinum, rhodium, and zirconia or of a rhodium alloy and zirconia is used as the gas sensing electrode. The electrode of the sensor is suitable for measuring nitrogen oxide such as NO and NO2 in an exhaust gas.

摘要翻译： 一种氮氧化物气体传感器，其中使用铂和铑的合金电极或铂，铑和氧化锆或铑合金和氧化锆的金属陶瓷电极作为气体感测电极。 传感器的电极适用于测量废气中的NO和NO 2等氮氧化物。

公开(公告)号：US06274016B1

公开(公告)日：2001-08-14

申请号：US09339108

申请日：1999-06-24

申请人： Masaharu Hasei ,  Yongtie Yan ,  Akira Kunimoto

发明人： Masaharu Hasei ,  Yongtie Yan ,  Akira Kunimoto

IPC分类号： G01N27407

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

摘要： A nitrogen oxide gas sensor wherein an alloy electrode of platinum and rhodium or a cermet electrode of platinum, rhodium, and zirconia or of a rhodium alloy and zirconia is used as the gas sensing electrode. The electrode of the sensor is suitable for measuring nitrogen oxide such as NO and NO2 in an exhaust gas.

摘要翻译： 氮氧化物气体传感器，其中使用铂和铑的合金电极或铂，铑和氧化锆或铑合金和氧化锆的金属陶瓷电极作为气体感测电极。传感器的电极适合于测量氮氧化物 例如废气中的NO和NO 2。

公开(公告)号：US6143165A

公开(公告)日：2000-11-07

申请号：US39248

申请日：1998-03-16

申请人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Noboru Yamazoe ,  Norio Miura

发明人： Hideyuki Kurosawa ,  Masaharu Hasei ,  Noboru Yamazoe ,  Norio Miura

IPC分类号： G01N27/407

CPC分类号： G01N27/4074

摘要： The present invention discloses a NOx sensor consisting of at least a pair of electrodes formed in touch with an ion conductive solid electrolyte; wherein the first electrode is composed of oxides of a metal (Cr, Mo or W) selected from 6a Group or a substance containing said oxides and an electric conductive material and the concentration of NOx in the test gas is detected by the change of the electromotive force between the first and second electrodes.

摘要翻译： 本发明公开了一种由至少一对与离子导电固体电解质接触形成的电极组成的NOx传感器， 其中所述第一电极由选自6a组的金属（Cr，Mo或W）的氧化物或含有所述氧化物的物质和导电材料构成，并且通过所述电动势的变化来检测所述测试气体中的NOx浓度 第一和第二电极之间的力。

公开(公告)号：US6126902A

公开(公告)日：2000-10-03

申请号：US868494

申请日：1997-06-03

申请人： Akira Kunimoto ,  Yongtie Yan ,  Masaharu Hasei ,  Hideyuki Kurosawa ,  Yukio Nakanouchi

发明人： Akira Kunimoto ,  Yongtie Yan ,  Masaharu Hasei ,  Hideyuki Kurosawa ,  Yukio Nakanouchi

IPC分类号： G01N27/407 ,  G01N27/416 ,  G01N27/419 ,  G01N31/12 ,  G01N27/16 ,  G01N33/00

CPC分类号： G01N27/419 ,  G01N27/4074 ,  Y10T436/177692 ,  Y10T436/179228

摘要： A stable sensor designed to detect accurately the total NOx concentration under 100 ppm in terms of the NO gas concentration is made up of a first cell and a second cell with a gas diffusion aperture provided between the two cells. The first cell has a partition wall of a substrate of oxygen ion conductor containing zirconia as the main component and permitting a gas to be detected to enter the zirconia substrate; oxygen pumping electrodes are also formed on the first cell substrate which functions to expel oxygen in an atmosphere of the first cell to the outside and to reduce NO.sub.2 of the NOx gas to be detected to NO gas. While NO gas entering through a gas diffusion aperture between the two cells flows into the second cell, a measurement is made of an electromotive force between a NO detection electrode formed in the second cell and a counter electrode also formed therein or a counter electrode formed on the reverse side of the zirconia substrate, since such electromotive force corresponds to the level of the NO gas concentration and thus provides the total NOx concentration.

摘要翻译： 设计用于以NO浓度浓度精确检测100ppm以下的总NOx浓度的稳定传感器由设置在两个电池之间的第一电池和第二电池构成，具有气体扩散孔。 第一电池具有含有氧化锆作为主要成分并允许检测气体进入氧化锆衬底的氧离子导体衬底的分隔壁; 在第一电池基板上还形成氧抽吸电极，其功能是将第一电池的气氛中的氧气排出到外部，并将待检测的NOx气体的NO 2还原为NO气体。 当通过两个单元之间的气体扩散孔进入的NO气体流入第二单元时，测量在第二单元中形成的NO检测电极和也形成在其中的对电极之间的电动势或形成在第二单元上的对电极 氧化锆衬底的相反侧，因为这种电动势对应于NO气体浓度的水平，因此提供总的NOx浓度。