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公开(公告)号：US6136170A
公开(公告)日：2000-10-24
申请号：US997738
申请日：1997-12-24
申请人： Ryuji Inoue , Tomohiro Fuma , Shoji Kitanoya , Yumi Mizutani , Masahito Kida , Takafumi Oshima , Takashi Hibino
发明人： Ryuji Inoue , Tomohiro Fuma , Shoji Kitanoya , Yumi Mizutani , Masahito Kida , Takafumi Oshima , Takashi Hibino
IPC分类号： G01N27/406 , G01N27/407 , G01N27/417 , G01N27/419 , G01N33/00 , G01N27/26
CPC分类号： G01N27/417 , G01N27/4065 , G01N27/4075 , G01N27/419 , G01N33/0047
摘要： The present invention provides an apparatus for measuring the concentration of a constituent to be detected in exhaust gas, which apparatus is capable of detecting with a high accuracy the concentration of the constituent to be detected in exhaust gas even though oxygen concentration in the exhaust gas varies. In an exhaust gas sensor 1 for use in the measuring apparatus, exhaust gas is introduced into spaces 15, 16 on both sides of an oxygen concentration cell element 4, and the oxidation catalyst activities of first to third electrodes 11 to 13 are adjusted so that there occurs a difference between the space 15 and the space 16 in consumption of the constituent to be detected, which consumption is caused by the oxidation of the constituent. Thus a concentration cell electromotive force is generated in the oxygen concentration cell element 4, and an oxygen pump element 3 pumps oxygen into or out of the space 15 so that the electromotive force is held at an target value EC not more than 10 mV. The pump current at this time is taken as the detection output on the constituent to be detected. The strengths of the oxygen concentration cell element 4 and of the oxygen pump element 3 can be increased by the provision of an integrated sintered body in which the elements 4 and 3 are laminated together with the space 15 formed between the first electrode 11 and the second electrode 12. Besides, the accuracy of detecting the constituent to be detected can be improved by the control over the temperature of the oxygen concentration cell element 4 and by the temperature compensation to the pump current.
摘要翻译： 本发明提供了一种用于测量排气中要检测的成分浓度的装置，该装置能够高精度地检测排气中的待检测物质的浓度，即使废气中的氧浓度变化 。 在用于测定装置的废气传感器1中，将废气引入到氧浓度电池元件4的两侧的空间15,16中，调整第一〜第三电极11〜13的氧化催化剂活性， 在被检测成分消耗的空间15和空间16之间存在差异，该消耗是由成分的氧化引起的。 因此，在氧浓度电池元件4中产生浓度电池电动势，并且氧气泵元件3将氧气输入到空间15中或从空间15排出，使得电动势保持在不大于10mV的目标值EC。 此时的泵电流被作为要检测的成分的检测输出。 可以通过提供一体的烧结体来增加氧浓度电池元件4和氧气泵元件3的强度，其中元件4和3与形成在第一电极11和第二电极11之间的空间15层叠在一起 电极12.此外，通过控制氧浓度电池元件4的温度以及对泵电流的温度补偿，可以提高检测成分的检测精度。
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公开(公告)号：US5989624A
公开(公告)日：1999-11-23
申请号：US134047
申请日：1998-08-14
申请人： Masahito Kida , Ryuji Inoue , Takafumi Oshima
发明人： Masahito Kida , Ryuji Inoue , Takafumi Oshima
IPC分类号： G01N27/416 , G01N27/407 , G01N27/419 , B05D5/12
CPC分类号： G01N27/4075 , G01N27/4074
摘要： There is described a gas-component concentration sensor, a method of using the sensor, and a method of manufacturing a particular electrode of the sensor, wherein the sensor comprises:a first measurement chamber, an oxygen partial-pressure detection electrode in the first measurement chamber, a first oxygen-ion pump cell within and outside the first measurement such that in response to a voltage applied between the pair electrodes the cell pumps out oxygen to an extent such that a gas component such as NO.sub.x partially decomposes in said first measurement chamber in an amount of not more than 40 wt. % of the gas component present;a second measurement chamber into which the measurement gas is introduced from the first measurement chamber, a second oxygen pump cell having a pair of electrodes such that in response to a voltage applied therebetween the second oxygen-ion pump cell decomposes the gas component within the second measurement chamber;wherein the pair of electrodes of the first oxygen ion pump cell the electrode provided inside first measurement chamber includes fine particles having a function of suppressing dissociation of the gas component that are formed on and carried by a first constituent component of the electrode.
摘要翻译： 描述了气体成分浓度传感器，使用传感器的方法以及制造传感器的特定电极的方法，其中传感器包括：第一测量室，第一测量中的氧分压检测电极 在第一测量中和之外的第一氧离子泵单元，使得响应于在所述一对电极之间施加的电压，所述电池将氧气排出到使得诸如NOx之类的气体成分在所述第一测量室中部分分解的程度 其用量不超过40wt。 存在的气体成分的％ 第二测量室，其中测量气体从第一测量室引入其中;第二氧泵单元，具有一对电极，使得响应于其间施加的电压，第二氧离子泵电池在第二测量室内分解第二氧离子泵室内的气体组分 测量室; 其中，设置在第一测量室内的电极的第一氧离子泵电池的一对电极包括具有抑制在电极的第一构成成分上形成并承载的气体成分的离解功能的微粒。
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公开(公告)号：US07412871B2
公开(公告)日：2008-08-19
申请号：US11359380
申请日：2006-02-23
IPC分类号： G01N7/00
CPC分类号： G01N27/125
摘要： There is provided an oxidizing gas sensor that includes an insulating substrate, a gas sensing layer laminated on the insulating substrate and substantially made of tin oxide so as to make resistance changes in response to concentration variations in oxidizing gas and a plurality of catalyst grains applied to a surface of the gas sensing layer and substantially made of gold, wherein 20% or more of the catalyst grains have an aspect ratio of 2.0 or greater when viewed at from the surface of the gas sensing layer.
摘要翻译： 提供一种氧化气体传感器，其包括绝缘基板，层压在绝缘基板上并基本上由氧化锡制成的气体感测层，以便响应于氧化气体的浓度变化和施加到 气体感测层的表面，并且基本上由金制成，其中当从气体感测层的表面观察时，其中20％或更多的催化剂颗粒具有2.0或更大的纵横比。
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公开(公告)号：US20060196248A1
公开(公告)日：2006-09-07
申请号：US11359380
申请日：2006-02-23
CPC分类号： G01N27/125
摘要： There is provided an oxidizing gas sensor that includes an insulating substrate, a gas sensing layer laminated on the insulating substrate and substantially made of tin oxide so as to make resistance changes in response to concentration variations in oxidizing gas and a plurality of catalyst grains applied to a surface of the gas sensing layer and substantially made of gold, wherein 20% or more of the catalyst grains have an aspect ratio of 2.0 or greater when viewed at from the surface of the gas sensing layer.
摘要翻译： 提供一种氧化气体传感器，其包括绝缘基板，层压在绝缘基板上并基本上由氧化锡制成的气体感测层，以便响应于氧化气体的浓度变化和施加到 气体感测层的表面，并且基本上由金制成，其中当从气体感测层的表面观察时，其中20％或更多的催化剂颗粒具有2.0或更大的纵横比。
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公开(公告)号：US20100147685A1
公开(公告)日：2010-06-17
申请号：US12527824
申请日：2008-12-12
IPC分类号： G01N27/26
CPC分类号： G01N27/128
摘要： Between a gas sensing layer (4) and a base member (15) composed of a silicon substrate (2) and an insulating coat layer (3), there is formed an adhesion layer 7, to improve the adhesion therebetween, and to prevent separation. The gas sensing layer (4) and sensing electrodes (6) are electrically connected by abutment of a confronting surface (61) of sensing electrodes (6) confronting the gas sensing layer (4) and sides surfaces of the sensing electrodes on both sides, on the gas sensing layer (4), and accordingly the gas sensor properly senses an electric characteristic of the gas sensing layer (4) varied in accordance with a concentration variation of a specified gas. Furthermore, the sensing electrodes (6) are in contact with the gas sensing layer (4), but the sensing electrodes are not in contact with the adhesion layer (7). Therefore, the adhesion layer (7) need not be a complete insulating layer, and it is possible to use, as the adhesion layer, an incomplete insulating film or a conductive film, so that options of the adhesion layer (7) are increased.
摘要翻译： 在气体感测层（4）和由硅衬底（2）和绝缘涂层（3）组成的基底构件（15）之间形成粘合层7，以改善它们之间的粘附性并防止分离 。 气体感测层（4）和感测电极（6）通过面对气体感测层（4）的感测电极（6）的相对表面（61）和两侧的感测电极的侧表面的邻接电连接， 在气体感测层（4）上，因此气体传感器适当地感测根据特定气体的浓度变化而变化的气体感测层（4）的电特性。 此外，感测电极（6）与气体感测层（4）接触，但感测电极不与粘附层（7）接触。 因此，粘合层（7）不需要是完整的绝缘层，并且可以使用不完全绝缘膜或导电膜作为粘合层，使得粘附层（7）的选项增加。
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公开(公告)号：US20060185420A1
公开(公告)日：2006-08-24
申请号：US11358621
申请日：2006-02-21
IPC分类号： G01N7/00
CPC分类号： G01N27/125
摘要： The present invention provides a gas sensor having excellent humidity resistance even if used in a high temperature and high humidity atmosphere. According to the present invention, a gas sensor is comprised of: a silicon substrate; a metal-oxide semiconductor portion comprised mainly of SnO2 and formed on the substrate; and a catalytic portion comprised of Pd and dispersed on a surface of the metal-oxide semiconductor portion, wherein the metal-oxide semiconductor portion and the catalytic portion constitute a gas sensing portion. Furthermore, an insulating portion comprised mainly of SiO2 is formed dispersedly on a surface of the gas sensing portion. Further, the catalytic portion and the insulating portion are formed on the surface of the metal-oxide semiconductor portion so that the surface additive rate, which is expressed by Si/(Pd+Si) representing the ratio in the number of atoms of Si to Pd, of the gas sensing portion having the insulating portion may be 65% or more to 97% or less, and so that the surface additive rate, which is expressed by Si/(Sn+Si) representing the ratio in the number of atoms of Si to Sn, of the gas sensing portion may be 75% or more to 97% or less.
摘要翻译： 本发明提供即使在高温高湿环境下使用也具有优异的耐湿性的气体传感器。 根据本发明，气体传感器包括：硅衬底; 主要由SnO 2 N 2组成并形成在基板上的金属氧化物半导体部分; 以及由Pd构成并分散在金属氧化物半导体部分的表面上的催化部分，其中金属氧化物半导体部分和催化部分构成气体感测部分。 此外，主要由SiO 2 2组成的绝缘部分分散地形成在气体感测部分的表面上。 此外，催化剂部分和绝缘部分形成在金属氧化物半导体部分的表面上，使得由Si /（Pd + Si）表示的表示添加剂率表示Si原子数与Si 具有绝缘部分的气体感测部分的Pd可以为65％以上至97％以下，并且表示以表示原子数比的Si /（Sn + Si）表示的表面添加率 Si至Sn的气体检测部分可以为75％以上至97％以下。
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公开(公告)号：US08393196B2
公开(公告)日：2013-03-12
申请号：US12527824
申请日：2008-12-12
IPC分类号： G01N7/00
CPC分类号： G01N27/128
摘要： Between a gas sensing layer (4) and a base member (15) composed of a silicon substrate (2) and an insulating coat layer (3), there is formed an adhesion layer 7, to improve the adhesion therebetween, and to prevent separation. The gas sensing layer (4) and sensing electrodes (6) are electrically connected by abutment of a confronting surface (61) of sensing electrodes (6) confronting the gas sensing layer (4) and sides surfaces of the sensing electrodes on both sides, on the gas sensing layer (4), and accordingly the gas sensor properly senses an electric characteristic of the gas sensing layer (4) varied in accordance with a concentration variation of a specified gas. Furthermore, the sensing electrodes (6) are in contact with the gas sensing layer (4), but the sensing electrodes are not in contact with the adhesion layer (7). Therefore, the adhesion layer (7) need not be a complete insulating layer, and it is possible to use, as the adhesion layer, an incomplete insulating film or a conductive film, so that options of the adhesion layer (7) are increased.
摘要翻译： 在气体感测层（4）和由硅衬底（2）和绝缘涂层（3）组成的基底构件（15）之间形成粘合层7，以改善它们之间的粘附性并防止分离 。 气体感测层（4）和感测电极（6）通过面对气体感测层（4）的感测电极（6）的相对表面（61）和两侧的感测电极的侧表面的邻接电连接， 在气体感测层（4）上，因此气体传感器适当地感测根据特定气体的浓度变化而变化的气体感测层（4）的电特性。 此外，感测电极（6）与气体感测层（4）接触，但感测电极不与粘附层（7）接触。 因此，粘合层（7）不需要是完整的绝缘层，并且可以使用不完全绝缘膜或导电膜作为粘合层，使得粘附层（7）的选项增加。
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公开(公告)号：US07276745B2
公开(公告)日：2007-10-02
申请号：US11358621
申请日：2006-02-21
CPC分类号： G01N27/125
摘要： The present invention provides a gas sensor having excellent humidity resistance even if used in a high temperature and high humidity atmosphere. According to the present invention, a gas sensor is comprised of: a silicon substrate; a metal-oxide semiconductor portion comprised mainly of SnO2 and formed on the substrate; and a catalytic portion comprised of Pd and dispersed on a surface of the metal-oxide semiconductor portion, wherein the metal-oxide semiconductor portion and the catalytic portion constitute a gas sensing portion. Furthermore, an insulating portion comprised mainly of SiO2 is formed dispersedly on a surface of the gas sensing portion. Further, the catalytic portion and the insulating portion are formed on the surface of the metal-oxide semiconductor portion so that the surface additive rate, which is expressed by Si/(Pd+Si) representing the ratio in the number of atoms of Si to Pd, of the gas sensing portion having the insulating portion may be 65% or more to 97% or less, and so that the surface additive rate, which is expressed by Si/(Sn+Si) representing the ratio in the number of atoms of Si to Sn, of the gas sensing portion may be 75% or more to 97% or less.
摘要翻译： 本发明提供即使在高温高湿环境下使用也具有优异的耐湿性的气体传感器。 根据本发明，气体传感器包括：硅衬底; 主要由SnO 2 N 2组成并形成在基板上的金属氧化物半导体部分; 以及由Pd构成并分散在金属氧化物半导体部分的表面上的催化部分，其中金属氧化物半导体部分和催化部分构成气体感测部分。 此外，主要由SiO 2 2组成的绝缘部分分散地形成在气体感测部分的表面上。 此外，催化剂部分和绝缘部分形成在金属氧化物半导体部分的表面上，使得由Si /（Pd + Si）表示的表示添加剂率表示Si原子数与Si 具有绝缘部分的气体感测部分的Pd可以为65％以上至97％以下，并且表示以表示原子数比的Si /（Sn + Si）表示的表面添加率 Si至Sn的气体检测部分可以为75％以上至97％以下。
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公开(公告)号：US5610117A
公开(公告)日：1997-03-11
申请号：US392381
申请日：1995-02-22
申请人： Makoto Horiuchi , Masahito Kida
发明人： Makoto Horiuchi , Masahito Kida
CPC分类号： B01D53/944 , B01J23/8986 , B01J37/0248
摘要： A catalyst for purification of diesel engine exhaust gas is disclosed which comprises having (A) a catalytic component comprising the two elements of iron and manganese and a refractory inorganic oxide and optionally an alkaline earth element and/or a rare earth element and (B) a catalytic component comprising at least one noble metal selected from the group consisting of palladium, platinum, and rhodium and a refractory inorganic oxide and optionally copper deposited in the form of a single layer on a refractory three-dimensional structure. This catalyst is capable of removing such harmful components as carbonaceous particulates, unburned hydrocarbons, and carbon monoxide from the diesel engine exhaust gas and, moreover, suppress the formation of sulfates from sulfur dioxide.
摘要翻译： 公开了一种用于净化柴油发动机废气的催化剂，其包括（A）包含铁和锰的两种元素的催化组分和耐火无机氧化物以及任选的碱土金属元素和/或稀土元素，（B） 催化组分，其包含至少一种选自钯，铂和铑的贵金属和难熔无机氧化物，以及任选的以难溶三维结构的单层形式沉积的铜。 该催化剂能够从柴油机排气中除去碳质颗粒，未燃烧的烃和一氧化碳等有害成分，并且还抑制二氧化硫形成硫酸盐。
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