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:
Jan. 10, 2012
Filed:
Aug. 14, 2008
Daniel R. Harshbarger, Columbus, IN (US);
Daniel D. Wilhelm, Nashville, IN (US);
Purna Chander Nalla, Hyderabad, IN;
Daniel R. Harshbarger, Columbus, IN (US);
Daniel D. Wilhelm, Nashville, IN (US);
Purna Chander Nalla, Hyderabad, IN;
Cummins Filtration IP, Inc., Minneapolis, MN (US);
Abstract
Methods of monitoring replacement of a diesel particulate filter (DPF) by a non-particulate matter filter. The disclosed methods takes into account a change in delta pressure based soot load estimates (DPSLE) over time to detect whether the DPF has been replaced. The estimate, which is measured by the delta pressure drop across the filter, can be used to determine whether a device that does not have the capability of trapping soot, such as a muffler, has been inserted.