Search Results

In 1991, linear O2 sensors for lean-burn control were introduced in production vehicles for the first time in the world. Since then, the linear O2 sensors have been used mainly for the precise λ control. Recently requirements for Oxygen sensors have become increasingly stringent in the trends of tighter vehicle EM control requirements and lower fuel consumption. In response to these trends, NGK SPARK PLUG CO., LTD. has developed a new generation linear O2 sensor, which has a high water toughness and requires less power consumption.

In 1999, the first generation NOx sensor from NGK Spark Plug, Co., Ltd. was commercialized for use in gasoline LNT NOx after-treatment systems [ 1 ]. Since then, as emissions regulations and OBD requirements have become more stringent, the demand for a high-accuracy NOx sensor with fast light-off has increased, particularly for diesel after-treatment systems. To meet such market demands, NGK Spark Plug, Co., Ltd. has developed, in collaboration with Ford Motor Company, a second generation NOx sensor.