Advanced Planar Oxygen Sensors for Future Emission Control Strategies

Engines and exhaust after treatment systems for future automotive applications

“…The end of the storage and regeneration phases are either indirectly calculated using models together with a Lambda Oxygen Sensor signal or more directly switched with an NO XSensor downstream of the catalytic converter [5][6][7][8].…”

FeSrTiO3-based resistive oxygen sensors for application in diesel engines

“…Indeed, typical exhaust gas compositions of gasoline and diesel engines (see Table 1) show remarkable differences among them, in particular as far as the concentration of oxygen is concerned [8]. For this scope a wide band lambda oxygen sensor is required for diesel engines [9].…”

“…Planar resistive oxygen sensors based on TiO 2 or Fe-doped SrTiO 3 have attracted specific interest as promising alternatives to conventional zirconia sensors, because of their simpler design and manufacturing process, with potential cost reduction [9][10][11][12][13]. Furthermore, these planar sensors have a better thermal conductivity with respect to conventional lambda probe and, therefore, they reach the operating temperature in few seconds, guaranteeing quick start operation.…”

Process Zirconia Oxygen Analyzer — State of ArtZirkondioxid-Sauerstoffsensoren — Stand der Technik

“…Instead of switching back and forth like previous lambda sensor designs, the new wide-band (WB) lambda sensor produces a signal which is directly proportional to the air/fuel ratio. A very important lambda sensor development milestone was the introduction of platinum cermet electrode co-firing techniques and the tm -Technisches Messen 77 (2010) 1 / DOI 10.1524/teme.2010.0003 © Oldenbourg Wissenschaftsverlag so-called engobe technique for a porous protection film combined with a plasma sprayed spinel layer to form a double protection layer system [14].…”