The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2020
Filed:
Nov. 16, 2017
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Hirokazu Murase, Nissin, JP;
Takeshi Sugiyama, Ichinomiya, JP;
NGK SPARK PLUG CO., LTD., Nagoya-shi, Aichi, JP;
Abstract
A particulate detection system () includes a sensor section () and a sensor drive section (). A flow EIF of a measurement target gas EI passes through the sensor section, and an amount M of particulates S is detected. The sensor section () includes an ion applying section () which generates ions CP, discharges ion-adhering electrified particulates SC, and collects unadhered ions CPF. The sensor drive section includes a sensor current value obtainment section () for obtaining a sensor current value Ss corresponding to the amount QH of flowed out charge, a flow velocity obtainment section () for obtaining, the flow velocity Vg of the external gas flow, and a particulate amount obtainment section () for obtaining the amount M of particulates S. The influence of flow velocity Vg is mitigated using the sensor current value Ss and the flow velocity Vg.