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:
Oct. 21, 2014
Filed:
Sep. 30, 2010
Mark Bays, Columbus, IN (US);
Thomas A. Grana, Columbus, IN (US);
Daniel D. Wilheim, Nashville, IN (US);
Stephen J. Charlton, Columbus, IN (US);
John Carson Wall, Columbus, IN (US);
Mark Bays, Columbus, IN (US);
Thomas A. Grana, Columbus, IN (US);
Daniel D. Wilheim, Nashville, IN (US);
Stephen J. Charlton, Columbus, IN (US);
John Carson Wall, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A method includes determining a first NOconversion efficiency (η) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOconversion η value and comparing the first NOconversion η value and the second NOconversion η value, determining a NOconversion η change in response to comparing, and determining a DEF quality indicator in response to the NOconversion η change.