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

IPC分类号： F02D41/00 ,  G01N27/26

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。

公开(公告)号：US20100236925A1

公开(公告)日：2010-09-23

申请号：US12720485

申请日：2010-03-09

申请人： Akira UCHIKAWA ,  Masami Kawashima ,  Shoichi Sakai ,  Masao Tsukada ,  Keiji Mori ,  Kousaku Morita

发明人： Akira UCHIKAWA ,  Masami Kawashima ,  Shoichi Sakai ,  Masao Tsukada ,  Keiji Mori ,  Kousaku Morita

IPC分类号： G01N27/26 ,  B32B5/22

CPC分类号： C04B38/02 ,  C04B2111/0081 ,  G01N27/4073 ,  Y10T428/249986 ,  C04B35/00 ,  C04B38/0074 ,  C04B20/0096 ,  C04B40/0268

摘要： A gas sensor includes a ceramic structural member. The ceramic structural member includes a base body formed of an insulating material; and a porous ceramic layer formed integrally with the base body. The ceramic layer is formed of an admixture obtained by mixing a plurality of ceramic materials with each other. The plurality of ceramic materials have grain size distributions different from each other.

摘要翻译： 气体传感器包括陶瓷结构构件。 陶瓷结构件包括由绝缘材料形成的基体; 以及与基体一体形成的多孔陶瓷层。 陶瓷层由通过混合多种陶瓷材料而获得的混合物形成。 多种陶瓷材料具有彼此不同的晶粒尺寸分布。

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

IPC分类号： G01N27/00 ,  G01M15/10

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。

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

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。

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。

公开(公告)号：US20070215471A1

公开(公告)日：2007-09-20

申请号：US11723006

申请日：2007-03-15

申请人： Shoichi Sakai ,  Akira Uchikawa ,  Masao Tsukada

发明人： Shoichi Sakai ,  Akira Uchikawa ,  Masao Tsukada

IPC分类号： G01N27/26

CPC分类号： G01N27/4077

摘要： An exhaust gas sensor has a sensing element having a sensing area that detects certain components in exhaust gas, a holder that supports a base end portion of the sensing element and has a sensor-mounting structure for sensor installation, and a protector that is fixed to the holder and protects the sensing area of the sensing element. To support the sensing element, a sensing element insertion hole for receiving the base end portion of the sensing element is formed at the holder. Then, a clearance between an inner surface of the sensing element insertion hole and a surface of the sensing area is set to be smaller than a clearance between an inner surface of the protector and the surface of the sensing area.

摘要翻译： 废气传感器具有感测元件，其具有检测排气中的某些部件的感测区域，支撑感测元件的基端部并具有用于传感器安装的传感器安装结构的保持器，以及固定到 保持器并保护感测元件的感测区域。 为了支撑感测元件，在保持器处形成用于接收感测元件的基端部的感测元件插入孔。 然后，感测元件插入孔的内表面和感测区域的表面之间的间隙被设定为小于保护器的内表面和感测区域的表面之间的间隙。

公开(公告)号：US5969230A

公开(公告)日：1999-10-19

申请号：US970524

申请日：1997-11-14

申请人： Shoichi Sakai ,  Akira Uchikawa

发明人： Shoichi Sakai ,  Akira Uchikawa

IPC分类号： F02D45/00 ,  F02D35/00 ,  F02D41/14 ,  F01N3/00

CPC分类号： F02D41/1401 ,  F02D41/1494

摘要： A system for estimating the temperature of an oxygen sensor installed in an exhaust system of an engine comprises a section for sensing a load of the engine; a section for sensing a rotation speed of the engine; and a section which, based on both the engine load and the engine rotation speed, calculates a basic estimated temperature of the oxygen sensor which would appear under a normal condition. A section is employed which senses a speed of the vehicle. A section is employed which, based on the vehicle speed, determines a first correction factor for correcting the basic estimated temperature. A section is employed which senses the temperature of outside air. A section is employed which, based on the outside air temperature, determines a second correction factor for correcting the basic estimated temperature. A target estimated temperature calculating section is employed which, based on the basic estimated temperature and the first and second correction factors, calculates a target estimated temperature of the oxygen sensor and issues an output signal representative of the target estimated temperature. A stopper section is further employed which suppresses the target estimated temperature calculating section from issuing the output signal or calculating the target estimated temperature until a predetermined time passes from a time on which energization of the electric heater starts.

摘要翻译： 用于估计安装在发动机的排气系统中的氧传感器的温度的系统包括用于感测发动机的负载的部分; 用于感测发动机的转速的部分; 以及基于发动机负荷和发动机转速两者的部分计算将在正常状态下出现的氧传感器的基本估计温度。 使用感测车辆速度的部分。 使用基于车速决定用于校正基本估计温度的第一校正因子的部分。 使用一部分来感测外部空气的温度。 采用基于外部空气温度确定用于校正基本估计温度的第二校正因子的部分。 采用目标推定温度计算部，其基于基本估计温度和第一和第二校正因子计算氧传感器的目标估计温度，并发出表示目标估计温度的输出信号。 进一步采用一个停止部分，其抑制目标估计温度计算部分发出输出信号或计算目标估计温度，直到从电加热器通电开始的时间开始到达预定时间。

公开(公告)号：US20090095048A1

公开(公告)日：2009-04-16

申请号：US12248062

申请日：2008-10-09

申请人： Shoichi Sakai ,  Masami Kawashima

发明人： Shoichi Sakai ,  Masami Kawashima

IPC分类号： G01N27/407 ,  B05D5/12

CPC分类号： G01N27/4175

摘要： There is provided an inspection method of an oxygen sensor, which includes a sensing portion having a reference electrode, a sensing electrode and an oxygen ion conducting solid electrolyte layer arranged between the reference electrode and the sensing electrode. The inspection method contains the steps of reading a first output value of the oxygen sensor under a condition that the sensing portion of the oxygen sensor is subjected to a first inspection gas and then a second output value of the oxygen sensor under a condition that the sensing portion of the oxygen sensor is subjected to a second inspection gas different in oxygen concentration from the first inspection gas and judging the oxygen sensor to be defective or nondefective based on the first and second output values.

摘要翻译： 提供了氧传感器的检查方法，其包括具有参考电极，感测电极和布置在参考电极和感测电极之间的氧离子传导固体电解质层的感测部分。 检查方法包括以下步骤：在氧传感器的感测部分经受第一检查气体然后在氧传感器的第二输出值的条件下读取氧传感器的第一输出值， 氧传感器的一部分经受来自第一检查气体的氧浓度不同的第二检查气体，并且基于第一和第二输出值判断氧传感器是有缺陷的或无缺陷的。

公开(公告)号：US07704358B2

公开(公告)日：2010-04-27

申请号：US11711775

申请日：2007-02-28

申请人： Futoshi Ichiyanagi ,  Akira Uchikawa ,  Shoichi Sakai ,  Goji Matsumoto

发明人： Futoshi Ichiyanagi ,  Akira Uchikawa ,  Shoichi Sakai ,  Goji Matsumoto

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。