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:
Jul. 19, 2011
Filed:
Jun. 19, 2007
Dmitry Arie Shamis, Commerce Township, MI (US);
James Edward Mccarthy, Jr., Canton, MI (US);
Johannes Walter Reuter, Ypsilanti, MI (US);
Karen Evelyn Bevan, Northville, MI (US);
Christian Thomas Chimner, Royal Oaks, MI (US);
Dmitry Arie Shamis, Commerce Township, MI (US);
James Edward McCarthy, Jr., Canton, MI (US);
Johannes Walter Reuter, Ypsilanti, MI (US);
Karen Evelyn Bevan, Northville, MI (US);
Christian Thomas Chimner, Royal Oaks, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A lean NOtrap is a diesel exhaust aftertreatment system is selectively denitrated based on a measure relating to the state and/or the performance of the exhaust aftertreatment system, or a portion thereof comprising the lean NOtrap, reaching a critical value. The critical value is varied according to the demands currently being place on the exhaust aftertreatment system. In one embodiment, the critical value is set based on engine speed-load information. The method regenerates more frequently when exhaust aftertreatment demands are high and less frequently when demands are low. The method improves aftertreatment performance while reducing aftertreatment fuel penalty.