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    • 21. 发明授权
    • Heater patterns for planar gas sensors
    • 平面气体传感器的加热器图案
    • US06435005B1
    • 2002-08-20
    • US09741597
    • 2000-12-19
    • Paul C. KikuchiLone-Wen F. TaiWalter T. Symons
    • Paul C. KikuchiLone-Wen F. TaiWalter T. Symons
    • G01N2712
    • G01N27/4067Y10T29/49007Y10T29/49083
    • A heater pattern for a heater of a gas sensor in which a temperature profile is manipulated utilizes a thermistor element arranged in an electrically serial configuration and disposed on a substrate. The thermistor element is arranged so as to define an edge pattern extending about a perimeter of the substrate and a center pattern serially connected to the edge pattern. The center pattern extends over a portion of the substrate that is intermediate the perimeter of the substrate. In a preferred embodiment, the thermistor element is screen printed onto the substrate to a thickness of about 5 microns to about 50 microns, and preferably to a thickness of about 10 microns to about 40 microns. The edge and center patterns are furthermore preferably formed of materials having differing coefficients of thermal resistivity, e.g., platinum and platinum/palladium blends. A method of heating the gas sensor includes disposing the thermistor element in an electrically serial configuration about a perimeter of the substrate and over a portion of the substrate intermediate the perimeter of the substrate and pass an electric current through the thermistor element.
    • 其中温度分布被控制的气体传感器的加热器的加热器图案利用以电串联配置布置并设置在基板上的热敏电阻元件。 热敏电阻元件布置成限定围绕衬底的周边延伸的边缘图案和与该边缘图案串联连接的中心图案。 中心图案延伸在衬底的位于衬底的周边之上的一部分上。 在优选实施例中,将热敏电阻元件丝网印刷到基底上,厚度为约5微米至约50微米,优选为约10微米至约40微米。 边缘和中心图案还优选地由具有不同系数的热阻率的材料形成,例如铂和铂/钯共混物。 一种加热气体传感器的方法包括将热敏电阻元件设置在围绕基板的周边的电气串联配置中,并且在基板周边的一部分之上并且传递电流通过热敏电阻元件。
    • 22. 发明授权
    • Catalytic washcoat for treatment of diesel exhaust
    • 用于柴油机废气处理的催化修补基面涂层
    • US5202299A
    • 1993-04-13
    • US812327
    • 1991-12-23
    • Walter T. SymonsRichard F. Beckmeyer
    • Walter T. SymonsRichard F. Beckmeyer
    • B01D53/94B01J37/02F02B3/06
    • B01D53/945B01J37/0215B01J37/0221F02B3/06Y02T10/22
    • A catalyst for treatment of exhaust emissions from diesel engines includes a washcoat layer with a catalytically active metal. The washcoat layer has refractory oxide particles with catalytically active metal particles dispersed thereon, and colloidal silica disposed in a thin layer over the refractory oxide and metal particles. The refractory oxide particles and colloidal silica are each characterized by respective surface charges at a selected pH to cause the colloid to form the layer over the refractory oxide and metal particles. Preferably, the pH is selected to provide opposite and attractive surface charges between the colloidal silica and the refractory oxide particles. Preferably, the metal particles are at least one of the group consisting essentially of platinum, palladium, rhodium, ruthenium, copper and chromium.
    • 用于处理来自柴油发动机废气排放的催化剂包括具有催化活性金属的修补基面涂层。 修补基面涂层具有分散有催化活性金属颗粒的难熔氧化物颗粒,以及配置在难熔氧化物和金属颗粒上的薄层中的胶体二氧化硅。 耐火氧化物颗粒和胶体二氧化硅的特征在于在选定的pH下各自的表面电荷,以使胶体在难熔氧化物和金属颗粒上形成层。 优选地,选择pH以在胶体二氧化硅和难熔氧化物颗粒之间提供相反且有吸引力的表面电荷。 优选地,金属颗粒是基本上由铂,钯,铑,钌,铜和铬组成的组中的至少一种。
    • 28. 发明授权
    • Gas sensor
    • 气体传感器
    • US06579435B2
    • 2003-06-17
    • US09740352
    • 2000-12-18
    • Da Yu WangPaul C. KikuchiWalter T. SymonsKaius K. PolikarpusLarry M. Oberdier
    • Da Yu WangPaul C. KikuchiWalter T. SymonsKaius K. PolikarpusLarry M. Oberdier
    • G01N27407
    • G01N27/419
    • A gas sensor is disclosed comprising an oxygen pump cell having at least one exterior pump electrode and at least one interior pump electrode disposed on opposite sides of a first solid electrolyte layer. An emf cell having a first and second emf electrodes and first and second reference gas electrodes are disposed on opposite sides of a second solid electrolyte layer. At least one insulating layer is in contact with the first and second emf electrodes. At least one via hole is disposed through the first solid electrolyte layer. At least one air channel is disposed through at least one insulating layer. An air vent is disposed in at least one insulating layer in contact with the first and second reference gas electrodes. A heater is disposed in thermal communication with the sensor. And at least five electrical leads are in electrical communication with said sensor. A method of using a gas sensor is also disclosed.
    • 公开了一种气体传感器,其包括具有至少一个外部泵电极和设置在第一固体电解质层的相对侧上的至少一个内部泵电极的氧气泵电池。 具有第一和第二电极电极和第一和第二参考气体电极的电池单元设置在第二固体电解质层的相对侧上。 至少一个绝缘层与第一和第二电极电极接触。 至少一个通孔设置穿过第一固体电解质层。 至少一个空气通道设置成穿过至少一个绝缘层。 排气孔设置在与第一和第二参考气体电极接触的至少一个绝缘层中。 加热器与传感器热连通地设置。 并且至少五个电引线与所述传感器电连通。 还公开了一种使用气体传感器的方法。
    • 29. 发明授权
    • Heater patterns for planar gas sensors
    • 平面气体传感器的加热器图案
    • US06365880B1
    • 2002-04-02
    • US09740776
    • 2000-12-19
    • Paul C. KikuchiLone-Wen F. TaiWalter T. Symons
    • Paul C. KikuchiLone-Wen F. TaiWalter T. Symons
    • H05B302
    • G01N27/4071
    • A heater for a gas sensor has a first thermistor element and a second thermistor element arranged in an electrically parallel configuration. Each thermistor element may be deposited onto a substrate such that the first thermistor element extends about a perimeter of the substrate and the second thermistor element extends across a portion of the substrate intermediate the perimeter of the substrate. The thermistor elements are preferably fabricated of materials having differing thermal coefficients of resistivity. A method of heating the gas sensor includes disposing the two thermistor elements in an electrically parallel configuration over a surface of the substrate and passing an electric current through the elements.
    • 用于气体传感器的加热器具有以电气并联构造布置的第一热敏电阻元件和第二热敏电阻元件。 每个热敏电阻元件可以沉积在基板上,使得第一热敏电阻元件围绕基板的周边延伸,并且第二热敏电阻元件延伸穿过衬底的位于衬底的周边的部分。 热敏电阻元件优选由具有不同的电阻率系数的材料制成。 一种加热气体传感器的方法包括将两个热敏电阻元件以电气平行的形式布置在衬底的表面上并使电流通过元件。