Ngk Spark Plug Company, Limited

Ryosuke Noda

Yoshinori Inoue

Yuichi Goto

Hiroki Hattori

A particulate sensor () having a sensor-side positioning portion () for determining the circumferential position of a sensor main body () with respect to a sensor attachment portion () when the particulate sensor () is attached to the sensor attachment portion (). The sensor attachment portion () has a pipe-side positioning portion () which conforms to the sensor-side positioning portion () and is configured such that, when the particulate sensor () is attached to the sensor attachment portion (), the circumferential position of the sensor main body () with respect to the sensor attachment portion () is always set to a fixed circumferential position.

Attachment structure of particulate sensor, particulate sensor, sensor attachment portion, and sensor attachment portion equipped gas flow pipe

A particulate measurement apparatus comprises a control section, which provisionally determines in an anomaly determination process that a corona core wire is in a short anomaly state when a linear voltage is equal to or lower than a particular voltage value and increments a sensor anomaly counter CNS or a chassis anomaly counter. The control section determines that the corona core wire is in a short anomaly state when the count value of one of the anomaly counters is equal to or greater than a determination threshold.

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Nagoya, Japan

Ryosuke Noda