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. 02, 2016
Filed:
Apr. 19, 2013
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute-shi, Aichi-ken, JP;
Hiroshi Miyagawa, Nagakute, JP;
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute-shi, JP;
Abstract
The internal combustion engine has an ammonia feeder which feeds ammonia to a combustion chamber and an NOselective reduction catalyst which is arranged in an engine exhaust passage. The removal rate of the NOselective reduction catalyst depends on a ratio of concentration of ammonia to NOof the exhaust which flows into the NOselective reduction catalyst, that is, a ratio of concentration of inflow. A high removal rate range where the NOremoval rate in the NOselective reduction catalyst becomes substantially maximum and, furthermore, the ammonia removal rate becomes substantially maximum, is set in advance. The internal combustion engine is controlled so that the ratio of concentration of inflow becomes inside the high removal rate range.