Ngk Spark Plug Company, Limited

Yuuya Nakayama

Kenji Kato

Masaki Mizutani

Shigeki Mori

Nobuo Furuta

Masao Tsuzuki

Hirotaka Onogi

Takumi Nishiyama

A NOx sensor control device is connected to a NOx sensor mounted in an internal combustion engine. The NOx sensor has a detection cell configured to detect a NOx concentration and having a solid electrolyte body and a pair of electrodes provided on a surface of the solid electrolyte body and a heater heating the detection cell. The NOx sensor control device has a heater control unit. The heater control unit is configured to, at a time when an operation of the internal combustion engine stops, perform a recovery control of the NOx sensor which is an electric current control of the heater for removing SOx adsorbed to the NOx sensor.

NOx sensor control device and NOx sensor control method

This invention provides a gas sensing device and gas sensor including a porous portion in which a first porous portion absorbs phosphorus and silicone sufficiently so as to suppress generation of clogging in a second porous portion meeting demands for intensifying the performance and accuracy of a gas sensor, so that the accuracy of detection of air-fuel ratio is further improved.

Gas sensing device and gas sensor

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Nagoya, Japan

Yuuya Nakayama