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    • 3. 发明授权
    • Methods for operating a mixed potential exhaust sensor and circuit configurations for carrying out said method
    • 用于操作混合电位排气传感器的方法和用于执行所述方法的电路配置
    • US06776890B1
    • 2004-08-17
    • US09856912
    • 2001-08-23
    • Bernd MuellerThomas BrinzBernd SchumannBernhard Bloemer
    • Bernd MuellerThomas BrinzBernd SchumannBernhard Bloemer
    • G01N27407
    • G01N27/4065
    • A method for operating a mixed-potential exhaust-gas probe for an internal combustion engine having a heatable probe ceramic 1.3 with a first electrode 1.5, which is arranged in a chamber 1.6 and is subjected to the reference atmosphere and with a second electrode 1.4 which detects gas molecules and is arranged in the exhaust gas of the internal combustion engine, a pump voltage being applied between the first and second electrodes by means of a pump voltage source, so that, in the interior of the chamber 1.6, a somewhat reduced oxygen partial pressure is adjusted by the electrochemical pumping off of the oxygen molecules, characterized in that one applies a constant external voltage to the electrodes (1.4, 1.5) with this voltage deviating from the thermodynamic equilibrium voltage of the wanted reaction, measuring and evaluating the current dropping across the electrodes (1.4, 1.5).
    • 操作具有可加热探针陶瓷1.3的内燃机的混合潜力排气探针的方法,其具有布置在腔室1.6中并经受参考气氛的第一电极1.5和与第二电极1.4接触的第二电极1.4, 检测气体分子并且布置在内燃机的废气中,泵电压借助于泵电压源施加在第一和第二电极之间,使得在腔室1.6的内部有一些减少的氧气 通过氧分子的电化学泵浦来调节分压,其特征在于,以电压偏离所需反应的热力学平衡电压,对电极(1.4,1.5)施加恒定的外部电压,测量和评估电流 滴落在电极(1.4,1.5)上。