公开(公告)号：US07258771B2

公开(公告)日：2007-08-21

申请号：US10217534

申请日：2002-08-14

申请人： Shigeo Isitani ,  Yasuji Orimo ,  Chiharu Katsuyama ,  Futoshi Ichiyanagi

发明人： Shigeo Isitani ,  Yasuji Orimo ,  Chiharu Katsuyama ,  Futoshi Ichiyanagi

IPC分类号： G01N27/41

CPC分类号： G01N27/4118

摘要： The invention relates to an air/fuel ratio detection apparatus. This apparatus includes (a) a heater portion having an elongate cylindrical shape and heating by applying electricity thereto from outside; (b) a solid electrolyte layer surrounding the heater portion and being activated by heat to conduct oxygen ions therethrough; (c) first and second electrodes in contact with the solid electrolyte layer and being away from each other such that pumping voltage is applied by the first and second electrodes to the solid electrolyte layer; (d) a reference electrode for outputting an air/fuel ratio detection signal, the reference electrode being formed on the solid electrolyte layer and being away from the first and second electrodes; and (e) a diffusion layer made of a porous material and surrounding periphery of the solid electrolyte layer to cover the first and second electrodes and the reference electrode.

摘要翻译： 本发明涉及一种空燃比检测装置。 该装置包括（a）具有细长圆柱形状的加热器部分和从外部向其施加电力的加热; （b）固体电解质层，其围绕加热器部分并通过热量活化以使氧离子通过其中; （c）与固体电解质层接触并彼此远离的第一和第二电极，使得第一和第二电极向固体电解质层施加泵送电压; （d）用于输出空燃比检测信号的参考电极，所述参考电极形成在所述固体电解质层上并远离所述第一和第二电极; 和（e）由多孔材料制成的扩散层，并且围绕固体电解质层的周边覆盖第一和第二电极和参考电极。

公开(公告)号：US07122103B2

公开(公告)日：2006-10-17

申请号：US10401560

申请日：2003-03-31

申请人： Shigeo Isitani ,  Futoshi Ichiyanagi ,  Yasuji Orimo ,  Chiharu Katsuyama

发明人： Shigeo Isitani ,  Futoshi Ichiyanagi ,  Yasuji Orimo ,  Chiharu Katsuyama

IPC分类号： G01N27/41

CPC分类号： G01N27/419

摘要： The invention relates to an air/fuel ratio detection apparatus for a gas. This apparatus includes (a) a heater portion having an elongate cylindrical shape; (b) a solid electrolyte layer surrounding the heater portion and activated by heat to conduct oxygen ions therethrough; (c) a first electrode positioned between the heater portion and the solid electrolyte layer; (d) second and third electrodes in contact with an outer surface of the solid electrolyte layer and away from each other; (e) a first voltage applying device for applying a first voltage between the first and second electrodes; (f) a second voltage applying device for applying a second voltage between the first and third electrodes, the second voltage being higher than the first voltage; and (g) a diffusion layer made of a porous material and covering the second electrode to adjust transmission of the gas to the second electrode.