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公开(公告)号：US07370545B2
公开(公告)日：2008-05-13
申请号：US11582412
申请日：2006-10-18
IPC分类号： G01D21/00
CPC分类号： G01N27/4077
摘要： An oxygen sensor includes a sensing element detecting an oxygen concentration in a measurement gas that flows in a pipe, a cylindrical protector which covers an outside of the sensing element and whose top end portion projects toward an inside of the pipe. An outside diameter D of the protector and a projection amount L of the protector inside the pipe are set so that a ratio of the product of the outside diameter D and the projection amount L (D×L) to a cross-sectional area S of a flow passage of the pipe becomes substantially smaller than or equal to 2.5%.
摘要翻译： 氧传感器包括检测在管中流动的测量气体中的氧浓度的感测元件，覆盖感测元件的外部并且其顶端部朝向管内部突出的圆柱形保护器。 保护器的外径D和管内的保护器的突出量L被设定为使得外径D与突出量L（DxL）的乘积与流量的横截面积S的比率 管的通过变得基本上小于或等于2.5％。
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公开(公告)号：US20060272944A1
公开(公告)日：2006-12-07
申请号：US11446954
申请日：2006-06-06
IPC分类号： G01N27/26
CPC分类号： G01N27/407 , G01N27/4078
摘要： An oxygen sensor includes a generally cylindrical casing. A detecting section is disposed at an axially one end side of the casing so as to detect a concentration of oxygen. Lead wires are electrically connected with the detecting section and outwardly extend through an axially other end side of the casing. A seal member is disposed inside an end section located at the axially other end side of the casing. The lead wires pierce the seal member. An insertion section is located at the axially one end side of the casing so that the detecting section projects over the insertion section. The insertion section is inserted into a through-hole formed in a wall of an exhaust pipe, so as to install the oxygen sensor to the exhaust pipe in a condition where the detecting section projects into the exhaust pipe. A ratio of a length of an outer projecting section of the oxygen sensor to a cross-sectional area of the insertion section inserted into the through-hole is set at a value not lower than a value at which a temperature in the seal member reaches a heat resistant temperature limit of the seal member.
摘要翻译： 氧传感器包括大致圆柱形的壳体。 检测部设置在壳体的轴向一端侧，以便检测氧的浓度。 引线与检测部分电连接并且向外延伸穿过壳体的轴向另一端侧。 密封构件设置在位于壳体的轴向另一端侧的端部内部。 引线刺穿密封件。 插入部位于壳体的轴向一端侧，使得检测部突出在插入部上。 插入部插入形成在排气管的壁上的通孔中，以便在检测部伸入排气管的状态下将氧传感器安装到排气管。 氧传感器的外部突出部的长度与插入通孔的插入部的截面积的比率被设定为不低于密封部件的温度达到的值的值 密封件的耐热温度极限。
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公开(公告)号：US20070089482A1
公开(公告)日：2007-04-26
申请号：US11582412
申请日：2006-10-18
IPC分类号： G01N33/497 , G01N27/26
CPC分类号： G01N27/4077
摘要： An oxygen sensor includes a sensing element detecting an oxygen concentration in a measurement gas that flows in a pipe, a cylindrical protector which covers an outside of the sensing element and whose top end portion projects toward an inside of the pipe. An outside diameter D of the protector and a projection amount L of the protector inside the pipe are set so that a ratio of the product of the outside diameter D and the projection amount L (D×L) to a cross-sectional area S of a flow passage of the pipe becomes substantially smaller than or equal to 2.5%.
摘要翻译： 氧传感器包括检测在管中流动的测量气体中的氧浓度的感测元件，覆盖感测元件的外部并且其顶端部朝向管内部突出的圆柱形保护器。 保护器的外径D和管内的保护器的突出量L被设定为使得外径D与突出量L（DxL）的乘积与流量的横截面积S的比率 管的通过变得基本上小于或等于2.5％。
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公开(公告)号：US20070084725A1
公开(公告)日：2007-04-19
申请号：US11580899
申请日：2006-10-16
申请人： Shoichi Sakai , Keiji Mori , Futoshi Ichiyanagi , Akira Uchikawa , Masami Kawashima , Masao Tsukada
发明人： Shoichi Sakai , Keiji Mori , Futoshi Ichiyanagi , Akira Uchikawa , Masami Kawashima , Masao Tsukada
IPC分类号： G01N27/26
CPC分类号： G01N27/4077
摘要： An oxygen sensor including an oxygen concentration sensing unit including a pair of electrodes and a solid electrolyte layer which is disposed between the pair of electrodes and has an oxygen ion conductivity. A porous protective coat is disposed on an outer surface of the oxygen concentration sensing unit. A protector covers the oxygen concentration sensing unit via a space between the protector and the porous protective coat and has a plurality of inlet holes through which a gas to be measured is introduced into the space. A ratio of a thickness of the porous protective coat to a diameter of each of the plurality of inlet holes is in a range of from 5% to 50%.
摘要翻译： 一种氧传感器，包括氧浓度感测单元，其包括一对电极和固体电解质层，所述固体电解质层设置在所述一对电极之间并具有氧离子传导性。 在氧浓度检测单元的外表面上设置多孔保护层。 保护器通过保护器和多孔保护涂层之间的空间覆盖氧浓度感测单元，并且具有多个入口孔，待测量的气体通过该入口孔被引入到空间中。 多孔保护层的厚度与多个入口孔的直径的比率在5％〜50％的范围内。
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公开(公告)号：US20070108051A1
公开(公告)日：2007-05-17
申请号：US11600193
申请日：2006-11-16
申请人： Futoshi Ichiyanagi , Keiji Mori , Masami Kawashima , Akira Uchikawa , Shoichi Sakai , Masao Tsukada
发明人： Futoshi Ichiyanagi , Keiji Mori , Masami Kawashima , Akira Uchikawa , Shoichi Sakai , Masao Tsukada
IPC分类号： G01N27/26
CPC分类号： G01N27/4077
摘要： In an oxygen sensor, a basic body is provided and a plurality of function layers are laminated on a surface of the basic body, the function layers including at least a solid electrolyte layer having an oxygen ion conductivity and a pair of electrode layers between which the solid electrolyte layer is inserted, a firing being carried out after the function layers are laminated on the surface of the basic body and, during the firing, a sintering of the basic body and the function layers being sequentially progressed toward an outer surface of the function layers from the basic body.
摘要翻译： 在氧传感器中，设置基体，在基体的表面层叠多个功能层，所述功能层至少包括具有氧离子传导性的固体电解质层和一对电极层， 插入固体电解质层，在功能层层叠在基体的表面上之后进行烧成，并且在烧制期间，基体和功能层的烧结依次前进到功能的外表面 从基本的身体层。
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公开(公告)号：US07704358B2
公开(公告)日：2010-04-27
申请号：US11711775
申请日：2007-02-28
IPC分类号： G01N27/26
CPC分类号： G01N27/4071 , Y10T29/532 , Y10T29/53204
摘要： An oxygen sensor includes a base body portion; and a plurality of function layers laminated on a surface of the base body portion. The function layers includes a solid electrolyte layer adapted to conduct oxygen ions; a reference electrode layer located on a base body portion side of the solid electrolyte layer; a sensing electrode layer located on the opposite side of the solid electrolyte layer to the reference electrode layer; a heater portion adapted to activate the solid electrolyte layer by heating; and a gas diffusion layer formed between the reference electrode layer and the base body portion, and adapted to diffuse a reference gas within the gas diffusion layer. The gas diffusion layer is formed to have a porosity indicating a limit current value ranging between 60 μA and 200 μA. The limit current value is a value of a current flowing between the reference electrode layer and the sensing electrode layer when the current flowing therebetween becomes substantially constant during the process of bringing a voltage applied therebetween higher.
摘要翻译： 氧传感器包括基体部分; 以及层叠在所述基体部的表面上的多个功能层。 功能层包括适于导电氧离子的固体电解质层; 位于固体电解质层的基体部侧的参考电极层; 位于所述固体电解质层的与所述参考电极层相反的一侧的感测电极层; 适于通过加热活化固体电解质层的加热器部分; 以及气体扩散层，其形成在所述参考电极层和所述基体部分之间，并且适于在所述气体扩散层内扩散参考气体。 气体扩散层形成为具有表示60μA至200μA范围内的极限电流值的孔隙率。 极限电流值是当在其间施加较高电压的过程中流动的电流在参考电极层和感测电极层之间流动的电流变得基本恒定时的电流的值。
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公开(公告)号：US20070199820A1
公开(公告)日：2007-08-30
申请号：US11711775
申请日：2007-02-28
CPC分类号： G01N27/4071 , Y10T29/532 , Y10T29/53204
摘要： An oxygen sensor includes a base body portion; and a plurality of function layers laminated on a surface of the base body portion. The function layers includes a solid electrolyte layer adapted to conduct oxygen ions; a reference electrode layer located on a base body portion side of the solid electrolyte layer; a sensing electrode layer located on the opposite side of the solid electrolyte layer to the reference electrode layer; a heater portion adapted to activate the solid electrolyte layer by heating; and a gas diffusion layer formed between the reference electrode layer and the base body portion, and adapted to diffuse a reference gas within the gas diffusion layer. The gas diffusion layer is formed to have a porosity indicating a limit current value ranging between 60 μA and 200 μA. The limit current value is a value of a current flowing between the reference electrode layer and the sensing electrode layer when the current flowing therebetween becomes substantially constant during the process of bringing a voltage applied therebetween higher.
摘要翻译： 氧传感器包括基体部分; 以及层叠在所述基体部的表面上的多个功能层。 功能层包括适于导电氧离子的固体电解质层; 位于固体电解质层的基体部侧的参考电极层; 位于所述固体电解质层的与所述参考电极层相反的一侧的感测电极层; 适于通过加热活化固体电解质层的加热器部分; 以及气体扩散层，其形成在所述参考电极层和所述基体部分之间，并且适于在所述气体扩散层内扩散参考气体。 气体扩散层形成为具有指示在60μA至200μA之间的极限电流值的孔隙率。 极限电流值是当在其间施加较高电压的过程中流动的电流在参考电极层和感测电极层之间流动的电流变得基本恒定时的电流的值。
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公开(公告)号：US07302828B2
公开(公告)日：2007-12-04
申请号：US11227063
申请日：2005-09-16
申请人： Akira Uchikawa , Masao Tsukada , Shoichi Sakai , Masami Kawashima , Keiji Mori
发明人： Akira Uchikawa , Masao Tsukada , Shoichi Sakai , Masami Kawashima , Keiji Mori
IPC分类号： G01N7/00
CPC分类号： G01N27/4077 , G01N27/4062
摘要： An oxygen sensor includes a tubular casing; an oxygen detecting element installed in a leading end of the tubular casing; lead wires each extending from the oxygen detecting element to the outside of the tubular casing through an open base end of the tubular casing, each lead wire including a core wire of metal; a rubber bush plugged in the open base end of the tubular casing, the rubber bush having the lead wires passed therethrough; and a heat resisting structure for protecting the rubber bush from a high temperature. The heat resisting structure is constructed to satisfy the following inequality: 10%≦Al/Ar≦50%, wherein: Al: The sectional area in total of the lead wires; and Ar: The sectional area of the rubber bush.
摘要翻译： 氧传感器包括管状壳体; 氧检测元件，其安装在所述管状壳体的前端部; 每个引线通过管状壳体的开放的基端从氧检测元件延伸到管状外壳的外部，每个引线包括金属芯线; 插入管状壳体的开口基端的橡胶衬套，具有穿过其中的引线的橡胶衬套; 以及用于保护橡胶衬套免受高温的耐热结构。 耐热结构被构造成满足以下不等式
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公开(公告)号：US20060086175A1
公开(公告)日：2006-04-27
申请号：US11227063
申请日：2005-09-16
申请人： Akira Uchikawa , Masao Tsukada , Shoichi Sakai , Masami Kawashima , Keiji Mori
发明人： Akira Uchikawa , Masao Tsukada , Shoichi Sakai , Masami Kawashima , Keiji Mori
CPC分类号： G01N27/4077 , G01N27/4062
摘要： An oxygen sensor comprises a tubular casing; an oxygen detecting element installed in a leading end of the tubular casing; lead wires each extending from the oxygen detecting element to the outside of the tubular casing through an open base end of the tubular casing, each lead wire including a core wire of metal; a rubber bush plugged in the open base end of the tubular casing, the rubber bush having the lead wires passed therethrough; and a heat resisting structure for protecting the rubber bush from a high temperature. The heat resisting structure is constructed to satisfy the following inequality: 10%≦Al/Ar≦50% wherein: Al: The sectional area in total of the lead wires. Ar: The sectional area of the rubber bush.
摘要翻译： 氧传感器包括管状壳体; 氧检测元件，其安装在所述管状壳体的前端部; 每个引线通过管状壳体的开放的基端从氧检测元件延伸到管状外壳的外部，每个引线包括金属芯线; 插入管状壳体的开口基端的橡胶衬套，具有穿过其中的引线的橡胶衬套; 以及用于保护橡胶衬套免受高温的耐热结构。 耐热结构被构造成满足以下不等式：<？in-line-formula description =“In-line formula”end =“lead”？> 10％<= Al / Ar <= 50％<？in-line -formulae description =“In-line Formulas”end =“tail”？>其中：Al：导线总共的截面面积。 Ar：橡胶衬套的截面积。
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公开(公告)号：US20090312938A1
公开(公告)日：2009-12-17
申请号：US12482173
申请日：2009-06-10
申请人： Kousaku Morita , Akira Uchikawa , Masami Kawashima , Shoichi Sakai , Masao Tsukada , Keiji Mori , Shosaku Ishihara , Tsuyoshi Fujita
发明人： Kousaku Morita , Akira Uchikawa , Masami Kawashima , Shoichi Sakai , Masao Tsukada , Keiji Mori , Shosaku Ishihara , Tsuyoshi Fujita
CPC分类号： G01N27/407 , F02D41/1454 , G01N27/4078
摘要： The invention provides an air-fuel ratio control system in which high precision can be applied to the air-fuel ratio feedback control of an engine by using a gas sensor mainly configured by an oxygen sensor that prevents the deterioration of the holding power of sealing material which enables high density filling with a small compressive load or the deterioration of the sealing material. The gas sensor such as the oxygen sensor is based upon a gas content detecting sensor that includes a gas content detecting element and a holder holding the gas content detecting element and that seals a measuring part of the gas content detecting element in the holder by a sealing part in which the sealing material is compressively filled, and has a characteristic that the sealing material is molded by mixed powder including plural species of forms of particles.
摘要翻译： 本发明提供了一种空燃比控制系统，其中可以通过使用主要由氧传感器构成的气体传感器将高精度应用于发动机的空燃比反馈控制，该传感器防止密封材料的保持力的劣化 这使得具有小的压缩载荷的高密度填充或密封材料的劣化。 诸如氧传感器的气体传感器基于气体含量检测传感器，其包括气体含量检测元件和保持气体含量检测元件的保持器，并且通过密封将气体含量检测元件的测量部分密封在保持器中 其中密封材料被压缩填充的部分，并且具有密封材料由包含多种形式的颗粒的混合粉末模制的特征。
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