Invention Grant
- Patent Title: Particulate detection apparatus
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Application No.: US16505262Application Date: 2019-07-08
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Publication No.: US11137332B2Publication Date: 2021-10-05
- Inventor: Takeshi Sugiyama , Yoshinori Hibino
- Applicant: NGK SPARK PLUG CO., LTD.
- Applicant Address: JP Nagoya
- Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee Address: JP Nagoya
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2018-129985 20180709
- Main IPC: G01N15/06
- IPC: G01N15/06 ; B01D46/44 ; B01D46/00 ; F01N11/00 ; G01N15/00

Abstract:
A particulate detection apparatus for controlling a particulate sensor which detects the amount of particulates discharged from a filter for collecting particulates contained in exhaust gas. The particulate sensor includes a detection section configured to electrify particulates contained in exhaust gas so as to produce electrified particulates. The particulate detection apparatus includes a period judgment section, an output obtainment section and an anomaly judgment section. The period judgment section judges whether or not the present point in time is within a previously set anomaly determination period just after completing a filter regeneration process. The output obtainment section obtains a sensor output representing the result of detection by the particulate sensor in the case where the present point in time is judged to be within the anomaly determination period. The anomaly judgment section judges whether or not the particulate sensor is anomalous based on the sensitivity characteristic of the sensor output.
Public/Granted literature
- US20200011780A1 PARTICULATE DETECTION APPARATUS Public/Granted day:2020-01-09
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