公开(公告)号：US20190292967A1

公开(公告)日：2019-09-26

申请号：US16357441

申请日：2019-03-19

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroki HATTORI ,  Ryosuke NODA

IPC: F01N11/00 ,  G01N15/06 ,  F01N13/00

Abstract: A particulate sensor (1) having a sensor-side positioning portion (11k) for determining the circumferential position of a sensor main body (5) with respect to a sensor attachment portion (120) when the particulate sensor (1) is attached to the sensor attachment portion (120). The sensor attachment portion (120) has a pipe-side positioning portion (121) which conforms to the sensor-side positioning portion (11k) and is configured such that, when the particulate sensor (1) is attached to the sensor attachment portion (120), the circumferential position of the sensor main body (5) with respect to the sensor attachment portion (120) is always set to a fixed circumferential position.

公开(公告)号：US20180088082A1

公开(公告)日：2018-03-29

申请号：US15714258

申请日：2017-09-25

Applicant: NGK Spark Plug Co., LTD.

Inventor： Yoshinori INOUE ,  Yuichi GOTO ,  Ryosuke NODA

IPC: G01N27/68

CPC classification number: G01N27/68 ,  F01N11/00 ,  F01N2560/05 ,  F02D41/1466 ,  F02D41/222 ,  F02P9/007 ,  G01N15/0656 ,  G01N2015/0046 ,  Y02T10/40 ,  Y02T10/47

Abstract: 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.