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:
Dec. 25, 2012
Filed:
Jun. 26, 2008
Ataru Ichikawa, Kariya, JP;
Tatsuya Fujita, Obu, JP;
Ataru Ichikawa, Kariya, JP;
Tatsuya Fujita, Obu, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system of an engine, one mode is executed based on satisfaction of an execution condition for each mode, from among a plurality of control modes. The control modes includes a purification control mode in which an addition amount of NHor an additive serving as a generating source of the NHis determined according to a predetermined parameter associated with an amount of NOin the exhaust gas, and a storage control mode in which the addition amount is set to be larger than that in the purification control mode. When a load on an output shaft of the engine is higher than an allowable level, the execution condition of the storage control mode is determined to be satisfied.