Resistive Oxygen Sensor Using Ceria-Zirconia Sensor Material and Ceria-Yttria Temperature Compensating Material for Lean-Burn EngineReportar como inadecuado




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National Institute of Advanced Industrial Science and Technology AIST, Advanced Manufacturing Research Institute, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan





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Abstract Temperature compensating materials were investigated for a resistive oxygen sensor using Ce0.9Zr0.1O2 as a sensor material for lean-burn engines. The temperature dependence of a temperature compensating material should be the same as the sensor material; therefore, the Y concentration in CeO2-Y2O3 was optimized. The resistance of Ce0.5Y0.5O2-δ was independent of the air-to-fuel ratio oxygen partial pressure, so that it was confirmed to function as a temperature compensating material. Sensor elements comprised of Ce0.9Zr0.1O2 and Ce0.5Y0.5O2-δ were fabricated and the output was determined to be approximately independent of the temperature in the wide range from 773 to 1,073 K. View Full-Text

Keywords: air-to-fuel ratio; automobile; gas sensor; solid electrolyte; resistive-type air-to-fuel ratio; automobile; gas sensor; solid electrolyte; resistive-type





Autor: Noriya Izu * , Sayaka Nishizaki, Woosuck Shin, Toshio Itoh, Maiko Nishibori and Ichiro Matsubara

Fuente: http://mdpi.com/



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