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：US06551497B1

公开(公告)日：2003-04-22

申请号：US09469239

申请日：1999-12-22

申请人： Yunzhi Gao ,  Akira Kunimoto ,  Yongtie Yan ,  Hideyuki Kurosawa ,  Yukio Nakanouchi ,  Norio Miura ,  Noboru Yamazoe ,  Masaharu Hasei

发明人： Yunzhi Gao ,  Akira Kunimoto ,  Yongtie Yan ,  Hideyuki Kurosawa ,  Yukio Nakanouchi ,  Norio Miura ,  Noboru Yamazoe ,  Masaharu Hasei

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N27/4065 ,  G01N27/417

摘要： A gas sensor for measuring concentration of a gas component in a measured gas, including a solid electrolytic substrate and at least two electrodes fixed to the substrate. At least a first electrode of the electrodes is disposed in the environment of the measurement gas, at least one of electrodes is polarized by applying a bias current or bias voltage, and a change in the potential of the polarized electrode is measured to thereby measure the concentration of the target gas.

摘要翻译： 一种气体传感器，用于测量测量气体中的气体成分的浓度，包括固体电解质基质和至少两个固定在基底上的电极。 电极的至少第一电极设置在测量气体的环境中，通过施加偏置电流或偏置电压来极化电极中的至少一个，并且测量极化电极的电位变化，从而测量 目标气体的浓度。

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：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。

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：US06471840B1

公开(公告)日：2002-10-29

申请号：US09622549

申请日：2000-08-18

申请人： Yunzhi Gao ,  Akira Kunimoto ,  Masaharu Hasei

发明人： Yunzhi Gao ,  Akira Kunimoto ,  Masaharu Hasei

IPC分类号： G01N27407

CPC分类号： G01N27/419 ,  G01N27/4175

摘要： A combined gas sensor of the invention is equipped with a second oxygen sensing electrode 5 active only to oxygen, which is disposed on a solid electrolyte substrate 3a such that it is directly exposed to detection gases. Sensor disorder is detected by measuring an electromotive force (signal output 2) generated between a reference electrode 7 and the second oxygen sensing electrode 5 as an oxygen concentration in an exhaust gas atmosphere, and comparing and judging the detected result with a signal output 1 corresponding to an electromotive force between a first oxygen sensing electrode 4 and the sit reference electrode 7, or with a signal output of an oxygen pump current.

摘要翻译： 本发明的组合式气体传感器配备有仅对氧气起作用的第二氧气感测电极5，其被设置在固体电解质基底3a上，使得其直接暴露于检测气体。 通过测量在参考电极7和第二氧气感测电极5之间产生的电动势（信号输出2）作为排气气氛中的氧浓度来检测传感器障碍，并且将检测结果与对应的信号输出1进行比较和判断 涉及第一氧气感测电极4和坐标参考电极7之间的电动势，或与氧气泵电流的信号输出。

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：US06673223B2

公开(公告)日：2004-01-06

申请号：US09991744

申请日：2001-11-26

申请人： Akira Kunimoto ,  Yongtie Yan ,  Takashi Ono

发明人： Akira Kunimoto ,  Yongtie Yan ,  Takashi Ono

IPC分类号： G01N2726

CPC分类号： G01N27/4071 ,  G01N27/4074 ,  G01N27/4075

摘要： The present invention discloses a gas sensing device, an oxygen pumping cell, and a gas detection apparatus using the same for detecting lower ranges of gas concentration with high accuracy and stability. An under layer made of oxygen-ion-conductive solid electrolyte was formed between an electrolyte substrate and a sensing electrode, a conversion electrode or a gas treatment electrode. This allows the physical and chemical adhesion between these electrodes and the electrolyte substrate, thereby improving the sensing properties and stability.

摘要翻译： 本发明公开了一种气体感测装置，氧气泵浦单元以及使用该气体检测装置的气体检测装置，用于以高精度和稳定性检测气体浓度的下限。 在电解质基板和检测电极，转换电极或气体处理电极之间形成由氧离子传导性固体电解质构成的下层。 这允许这些电极和电解质基底之间的物理和化学粘附，从而改善感测特性和稳定性。

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）。