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:
Sep. 19, 2017
Filed:
Dec. 25, 2013
Hino Motors, Ltd., Hino-shi, JP;
Keiichi Hayashizaki, Tokyo, JP;
Shinya Sato, Tokyo, JP;
Hiroshi Hirabayashi, Tokyo, JP;
Mitsuru Hosoya, Tokyo, JP;
HINO MOTORS, LTD., Hino-shi, JP;
Abstract
Incorporated in an exhaust pipe are an HC-SCR NOcatalyst capable of reducing NOat temperatures less than a set temperature T and a catalyzed particulate filter with an oxidation catalyst capable of reducing NOat temperatures not less than the set temperature T. When an exhaust gas temperature is less than the set temperature T, fuel with a set flow rate Q is intermittently added from a fuel addition unit on an entry side of the HC-SCR NOcatalyst to the HC-SCR NOcatalyst; when the exhaust gas temperature is not less than the set temperature T, the fuel with flow rate Q' not less than the set flow rate Q is temporarily rich-spike added from the fuel addition unit and is made arrival at a catalyzed particulate filter. With an active temperature range being expanded, exhaust emission control is performed in a wide temperature range.