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:
Feb. 20, 2018
Filed:
Jun. 27, 2014
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
NGK SPARK PLUG CO., LTD., Aichi, JP;
Abstract
A particulate detection system () for detecting the quantity of particulates S in a gas under measurement EG includes first heater energization means Sto S, current convergence determination means Sto S, Sto S, second heater energization means S, and detection start means S. Sto Sperforms low-temperature energization of heater () for a predetermined period after operation of ion source () is started by ion source drive circuit () such that gaseous discharge current Id becomes equal to a predetermined target current It. Sto S, Sto Sdetermines, after elapse of the predetermined period, whether or not Id has converged to an allowable range IR. When Sto Sdetermines that Id has not yet converged, Sperforms high-temperature energization of the heater () until Id converges. Then, Sstarts detection of particulates S using signal Is detected by a detection circuit ().