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    • 5. 发明授权
    • Multilayered air-fuel ratio sensing element
    • 多层空燃比传感元件
    • US06258233B1
    • 2001-07-10
    • US09237918
    • 1999-01-27
    • Tomio SugiyamaMasahiro ShibataHiromi Sano
    • Tomio SugiyamaMasahiro ShibataHiromi Sano
    • G01N27409
    • G01N27/4073
    • A multilayered air-fuel ratio sensing element has a zirconic solid electrolytic body and a heat-generating portion including an alumina substrate located adjacent to the zirconic solid electrolytic body. The zirconic solid electrolytic body is made of a partially stabilized zirconia containing 5˜7 mol % yttria and having a mixed phase structure including a cubic phase, a monoclinic phase and a tetragonal phase. The zirconic solid electrolytic body has a relative density of 94˜100% with a mean sintered grain size RZR of 0.5˜3.0 &mgr;m. The alumina substrate has a relative density of 95˜100% with a mean sintered grain size RAL of 0.5˜4.0 &mgr;m. And, the partially stabilized zirconia has an M/C ratio in a range from 0.05 to 0.25.
    • 多层空燃比传感元件具有锆固体电解体和发热部,该发热部包括与锆固体电解体相邻的氧化铝基板。 锆固体电解体由含有5〜7摩尔%氧化钇的部分稳定的氧化锆制成,具有立方相,单斜晶相和四方晶相的混合相结构。 锆固体电解质的相对密度为94〜100%,平均烧结粒度RZR为0.5〜3.0μm。 氧化铝基板的相对密度为95〜100%,平均烧结晶粒尺寸RAL为0.5〜4.0μm。 而且,部分稳定的氧化锆的M / C比在0.05-0.25的范围内。
    • 7. 发明授权
    • Oxygen concentration detector
    • 氧浓度检测仪
    • US5593558A
    • 1997-01-14
    • US467144
    • 1995-06-06
    • Hiroshi SuginoYasumichi HottaNamitsugu FujiiMasahiro ShibataHiromi Sano
    • Hiroshi SuginoYasumichi HottaNamitsugu FujiiMasahiro ShibataHiromi Sano
    • G01N27/407G01N27/26
    • G01N27/4075
    • An oxygen concentration detector includes a one-end closed cylindrical oxygen sensing element having an inside electrode, outside electrode provided on the inner side and outer side respectively, an electrode protecting layer made up of ceramics porous member provided further outside the outside electrode, and a trap layer 1 of ceramics porous member having a surface roughness of 20 to 100 .mu.m measured according to a 10 point mean roughness measurement and provided outside the electrode protecting layer is employed. By dipping the to-be-detected gas side surface of an oxygen sensing element into a slurry with coarse heat-resisting metal oxide particles, 2 to 50 .mu.m in average grain size, dispersed, depositing the slurry on the surface of a protective layer of an oxygen sensor element, thereafter drying and baking the deposit, a porous poisonous substance trap layer, 10 to 500 .mu.m thick, is formed. The dipping is performed after a previous degassing and strong stirring of said slurry and the stop of stirring.
    • 氧浓度检测器包括:一端封闭的圆柱形氧传感元件,其具有内电极,设置在内侧和外侧的外电极,由设置在外电极外侧的陶瓷多孔体构成的电极保护层,以及 使用根据10点平均粗糙度测量测量并设置在电极保护层外侧的表面粗糙度为20至100μm的陶瓷多孔构件的捕获层1。 通过将氧检测元件的待检测气体侧表面浸入具有粗糙的耐热金属氧化物颗粒的浆料中,平均粒径为2至50μm,分散,将浆料沉积在保护层的表面上 的氧传感器元件,然后干燥和烘烤沉积物,形成10至500μm厚的多孔有害物质捕获层。 在先前脱气并强烈搅拌所述浆料并停止搅拌之后进行浸渍。
    • 9. 发明授权
    • Air-fuel ratio detecting device
    • 空燃比检测装置
    • US5676811A
    • 1997-10-14
    • US789709
    • 1997-01-27
    • Daisuke MakinoHisayoshi OhtaKeigo MizutaniMasataka NaitoMasanori YamadaMasahiro ShibataHiromi Sano
    • Daisuke MakinoHisayoshi OhtaKeigo MizutaniMasataka NaitoMasanori YamadaMasahiro ShibataHiromi Sano
    • G01N27/419G01N27/26
    • G01N27/419
    • An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode. By disposing the oxygen pump portion and the oxygen sensor portion on the same solid electrolyte sheet, structure can be made simpler compared with a conventional air-fuel ratio detecting element in which a solid electrolyte sheet is used for each of an oxygen pump portion and an oxygen sensor portion.
    • 空燃比检测元件由设置在单个固体电解质片,加热元件和间隔件上的氧泵部分和氧传感器部分组成。 氧泵部由设置在固体电解质片的相对侧上的一对电极和通过固体电解质片和电极形成的连通孔构成。 电极与第二电极位于同一侧的固体电解质片上,形成氧传感器部。 间隔件具有开口和狭缝状开口。 从底部到顶部堆叠加热元件4,间隔件和固体电解质片,然后烘烤堆叠的组件。 在这种情况下,它们堆叠成使得开口面向第一电极和第二电极。 通过将氧泵部和氧传感器部配置在相同的固体电解质片上,与以往的空氧燃料比检测元件相比,可以使结构更简单,其中使用固体电解质片作为氧泵部和 氧传感器部分。