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. 18, 2014
Filed:
Mar. 16, 2012
Takeshi Sugiyama, Fuwa-gun, JP;
Masayuki Motomura, Komaki, JP;
Toshiya Matsuoka, Kaizu, JP;
Keisuke Tashima, Kasugai, JP;
Hitoshi Yokoi, Ama, JP;
Takeshi Sugiyama, Fuwa-gun, JP;
Masayuki Motomura, Komaki, JP;
Toshiya Matsuoka, Kaizu, JP;
Keisuke Tashima, Kasugai, JP;
Hitoshi Yokoi, Ama, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
There is provided a fine particle sensor for detecting fine particles in exhaust gas, including an ion generating unit for generating ions by corona discharge, a charging unit for charging the fine particles by some of the generated ions, an ion trapping unit for trapping a remainder of the generated ions and a casing for accommodating therein the charging unit and the ion trapping unit in a given arrangement direction. The casing has a gas inlet hole and a gas outlet hole formed in a circumferential wall thereof so that the exhaust gas flows in the charging unit through the gas inlet hole and flows out of the ion trapping unit through the gas outlet hole. The gas inlet hole and the gas outlet hole are arranged in such a manner as to at least partially overlap each other when viewed in the given arrangement direction.