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. 03, 2015
Filed:
Feb. 24, 2010
Hironori Narita, Hino, JP;
Hironori Narita, Hino, JP;
Hino Motors, Ltd., Hino-shi, JP;
Abstract
Disclosed is a method for detecting abnormality in a reducing agentreplenished to a reducing agent tankin an exhaust emission control device for reduction and removal of NOthrough addition of the reducing agentfrom the tankto a selective reduction catalystincorporated in an exhaust pipe. Presence or absence of NHslip is determined when a lowering of NOremoval rate is detected. When the presence of the NHslip is detected, it is determined that the selective reduction catalystis deteriorated; when the absence of the NHslip is determined, it is determined that a dilute reducing agent or/and a material other than the reducing agent are replenished into the tank.