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:
Nov. 08, 2016
Filed:
Oct. 31, 2013
Kazuki Iwatani, Susono, JP;
Kazuki Iwatani, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
An object of the present invention is to suppress a reduction in an NOpurification ratio when an addition is implemented to prevent a blockage from occurring in a reducing agent addition valve. A fuel addition valve, a catalyst having an oxidation capacity, and a selective reduction type NOcatalyst are provided in sequence in an exhaust passage of an internal combustion engine, and when a temperature of the selective reduction type NOcatalyst is within a predetermined temperature range while a predetermined condition for injecting fuel from the fuel addition valve is established, an amount of fuel injected from the fuel addition valve is reduced below an amount of fuel injected when the temperature of the selective reduction type NOcatalyst is outside the predetermined temperature range.