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. 24, 2010
Jeff Runde, Fishers, IN (US);
Xiao Lin, Indianapolis, IN (US);
Daniel D. Wilhelm, Nashville, IN (US);
David Everard, Columbus, IN (US);
Carlos A. Lana, Columbus, IN (US);
Jeff Runde, Fishers, IN (US);
Xiao Lin, Indianapolis, IN (US);
Daniel D. Wilhelm, Nashville, IN (US);
David Everard, Columbus, IN (US);
Carlos A. Lana, Columbus, IN (US);
Cummins IP, Inc., Minneapolis, MN (US);
Abstract
An apparatus for determining a deterioration of a NOsensor response rate in an internal combustion engine system includes an engine control module configured to stop fueling to an internal combustion engine during motoring of the internal combustion engine. The apparatus also includes a signal monitoring module configured to monitor a NOsensor signal after the engine control module stops fueling to the internal combustion engine during motoring of the engine and store NOsensor signal data corresponding to the monitored NOsensor signal. Additionally, the apparatus includes a time constant module that is configured to determine a time constant of the NOsensor response after the engine control module stops fueling. The apparatus further includes a response rate deterioration module configured to determine a response rate deterioration value of the NOsensor based at least partially on the determined time constant.