Non-Nernstian Zirconia Gas Sensors

Source Data from Miura, N., Nakatou, M., and Zhuiykov, S., 2003. 

NOx and NMHC standards will be phased in for diesel engines between 2007 and 2010. In Japan, diesel emission standards require that in-use, on-road, light commercial vehicles in the specified categories should meet NO emissions of 0.25 g/km starting from the end of 2005 and achieve full implementation by 2011. Also, Table 

FIGURE 3.1 Catalytic converter system equipped with NO sensors for the exhaust gas emitted from a new-type car engine. (Reprinted from Miura, N., Nakatou M., and Zhuiykov, S., Impedancemetric gas sensor based on zirconia solid electrolyte and oxide sensing electrode for detecting total NO at high temperature. Sens. Actuators B, Chem. 93 (2003) 221-228, with permission from Elsevier Science.) 

FIGURE 3.2 New advanced engine system and positions of different sensors. (Reprinted from Zhuiykov, S. and Miura, N., Development of zirconia-based potentiometric NOj sensors for automotive and energy industries in the early 21st century What are the prospects for sensors Sens. Actuators B, Chem. 121 (2007) 639-651, with permission from Elsevier Science.) 

One of the successfully commercialized sensors in the last century was the zirconia-based potentiometric oxygen sensor (A,-sensor), which has greatly improved 

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