Development of Planar Oxygen Sensor

抄録

In preparation for compliance with California′s SULEV standard and the Euro STAGE-4 standard, which will take effect in 2004 and 2005, respectively, a planar exhaust gas sensors (oxygen sensor and air fuel ratio sensor) have been developed. The planar sensors realized light-off time of 10 seconds, faster than any conventional cup shaped exhaust gas sensors. In addition, with its newly developed gas diffusion structure, the air fuel ratio sensor provides high detection accuracy for a wide range of air fuel ratio from rich to lean.