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:
Aug. 13, 2013
Filed:
Jul. 26, 2011
Jianwen LI, West Bloomfield, MI (US);
Rahul Mital, Rochester Hills, MI (US);
Michael V. Taylor, Wolverine Lake, MI (US);
Thomas Larose, Jr., Howell, MI (US);
Thomas J. Sobtzak, Otisville, MI (US);
Paul Jasinkiewicz, Northville, MI (US);
Rebecca J. Darr, Milford, MI (US);
Jianwen Li, West Bloomfield, MI (US);
Rahul Mital, Rochester Hills, MI (US);
Michael V. Taylor, Wolverine Lake, MI (US);
Thomas Larose, Jr., Howell, MI (US);
Thomas J. Sobtzak, Otisville, MI (US);
Paul Jasinkiewicz, Northville, MI (US);
Rebecca J. Darr, Milford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An exhaust gas treatment system for an internal combustion engine is provided and includes an exhaust gas conduit, a hydrocarbon supply, a particulate filter ('PF'), at least one sensor, a first temperature sensor, a second temperature sensor, and a control module. The PF is in fluid communication with the exhaust gas conduit and has a filter structure for removal of particulates in the exhaust gas. The filter structure has an innermost region and an outermost region. The PF is selectively regenerated during operation of the internal combustion engine. The PF has a stratified temperature structure that causes the particulates trapped at the innermost region of the PF burn off before the particulates trapped in the outermost region of the PF during regeneration. The control module has a memory with an infinite stage temperature control curve stored thereon.