公开(公告)号：US20070125647A1

公开(公告)日：2007-06-07

申请号：US11292179

申请日：2005-12-01

申请人： Da Wang ,  Walter Symons ,  Robert Farhat ,  John Kirwan ,  Joachim Kupe ,  Kenneth Mowery

发明人： Da Wang ,  Walter Symons ,  Robert Farhat ,  John Kirwan ,  Joachim Kupe ,  Kenneth Mowery

IPC分类号： G01N27/26

CPC分类号： G01N27/419 ,  H01M8/04089 ,  H01M8/0618

摘要： A sensor includes an oxygen pump cell; an oxygen pump chamber; an emf cell; a reference chamber providing a fluid connection to the reference gas; gas channels in fluid communication with the pump and emf electrodes, the reference gas comprising reformate produced by a fuel reformer fueled by an air-fuel gas mixture having an air-fuel ratio; a reformer electronic control module; a sensor electronic control module; a heater; a temperature sensor disposed in communication with the heater and the sensor control module for maintaining the sensor at a desired operating temperature; a closed loop controlled operation amplifier in electrical communication with the sensor, whereby the oxygen pump cell provides sufficient oxygen ions to oxidize an incoming diffusion-limiting fuel flux to the emf cell and maintain a constant emf at the emf cell, and wherein a current value represents an equivalent to the air-fuel ratio of the air-fuel gas mixture.

摘要翻译： 传感器包括氧气泵电池; 氧气泵室; 电磁场; 提供与参考气体的流体连接的参考室; 与泵和emf电极流体连通的气体通道，所述参考气体包括由具有空燃比的空气 - 燃料气体混合物燃料的燃料重整器产生的重整产物; 重整器电子控制模块; 传感器电子控制模块; 加热器 与所述加热器和所述传感器控制模块连通的温度传感器，用于将所述传感器保持在期望的工作温度; 与所述传感器电连通的闭环控制运算放大器，由此所述氧泵单元提供足够的氧离子以将进入的扩散限制性燃料通量氧化到所述电磁室并且在所述电磁场处保持恒定的电动势，并且其中电流值 表示空气 - 燃料气体混合物的空燃比。

公开(公告)号：US20050127920A1

公开(公告)日：2005-06-16

申请号：US10966910

申请日：2004-10-15

申请人： Kenneth Mowery ,  Douglas Tackitt

发明人： Kenneth Mowery ,  Douglas Tackitt

IPC分类号： G01N27/12 ,  G01N33/00 ,  G03B21/18

CPC分类号： G01N33/0054 ,  G01N27/122 ,  Y02A50/246

摘要： A technique for measuring an impedance of a sensor that is subject to ion migration includes a number of steps. Initially, a first electrical pulse is applied to an input of the sensor, whose impedance varies according to a first gas concentration in a gas stream. Next, a second electrical pulse is applied to the input of the sensor. The energy of the first and second electrical pulses is approximately the same and the first and second electrical pulses have opposite polarity. Next, a sensor load current is determined during at least one of the first and second electrical pulses to provide a first sensor current. Then, the sensor load current during the same one of the first and second electrical pulses is determined to provide a second sensor current. Finally, at least one component of the impedance of the sensor is determined based upon the first and second sensor currents.

摘要翻译： 用于测量经受离子迁移的传感器的阻抗的技术包括多个步骤。 首先，将第一电脉冲施加到传感器的输入端，该阻抗的阻抗根据气流中的第一气体浓度而变化。 接下来，向传感器的输入端施加第二电脉冲。 第一和第二电脉冲的能量大致相同，并且第一和第二电脉冲具有相反的极性。 接下来，在第一和第二电脉冲中的至少一个期间确定传感器负载电流以提供第一传感器电流。 然后，确定在第一和第二电脉冲的同一个期间的传感器负载电流以提供第二传感器电流。 最后，基于第一和第二传感器电流来确定传感器的阻抗的至少一个分量。

公开(公告)号：US20070040103A1

公开(公告)日：2007-02-22

申请号：US11205884

申请日：2005-08-17

申请人： Kenneth Mowery ,  Douglas Tackitt

发明人： Kenneth Mowery ,  Douglas Tackitt

IPC分类号： H01J40/14

CPC分类号： G01N27/122

摘要： A technique for reducing a parasitic DC bias voltage on a sensor monitors the parasitic DC bias voltage on a first element of the sensor. A controlled bias voltage that is applied between the first element of the sensor and a second element of the sensor is then modified to substantially maintain the parasitic DC bias voltage at a desired potential.

摘要翻译： 用于减小传感器上的寄生DC偏置电压的技术监测传感器的第一元件上的寄生直流偏置电压。 然后修改施加在传感器的第一元件和传感器的第二元件之间的受控偏置电压，以将寄生DC偏置电压基本上保持在期望的电位。