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. 27, 2011
Filed:
May. 20, 2008
Nan Yang, Dunlap, IL (US);
Jeff A. Jensen, Dunlap, IL (US);
Michael Pollard, Peoria, IL (US);
Jamie Stringfield, Peoria, IL (US);
Herbert Dacosta, Peoria, IL (US);
Nan Yang, Dunlap, IL (US);
Jeff A. Jensen, Dunlap, IL (US);
Michael Pollard, Peoria, IL (US);
Jamie Stringfield, Peoria, IL (US);
Herbert DaCosta, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An internal combustion engine system includes an engine having an engine housing. The engine system further includes an exhaust system, and a turbine disposed within the exhaust system. A particulate reduction device is disposed in the exhaust system upstream of the turbine. The particulate reduction device includes an exhaust retarder having a flow property which is based at least in part on a residence requirement for combustion of particulates in exhaust gases passing therethrough. The flow property may be a flow restriction property, and the exhaust retarder may include a flow restricting trapping element configured to trap particulates in the exhaust gases. The flow restricting trapping element defines a combustion efficacy to exhaust mass flow and temperature coefficient for the particulate reduction device which is based at least in part on a combustion initiating residence requirement for particulates passing through the particulate reduction device.