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:
Jul. 05, 2016
Filed:
Oct. 07, 2013
Cummins Emission Solutions Inc., Columbus, IN (US);
Xi Wei, Asbury, IA (US);
David Everard, Columbus, IN (US);
Baohua Qi, Columbus, IN (US);
Mickey R. McDaniel, Greenwood, IN (US);
Edmund P. Hodzen, Columbus, IN (US);
Guoquiang Li, Indianapolis, IN (US);
Cummins Emission Solutions Inc., Columbus, IN (US);
Abstract
A method includes determining whether a urea refill event is detected, and clearing a quality accumulator value and clearing a latching abort command. The method includes determining whether urea fluid quality check abort conditions are met, and clearing the urea quality accumulator, latching the abort command, and exiting the reductant fluid quality check. In response to the abort conditions not being met, incrementing the urea quality accumulator according to an amount of urea being injected, and comparing the accumulated urea quantity to a low test threshold. The method includes, in response to the accumulated urea quantity being greater than the low test threshold, comparing the accumulated urea quantity to a high test threshold, and in response to the urea quantity being greater than the high test threshold, determining whether the a NOexceedance is observed and clearing a urea quality error in response to the NOexceedance not being observed.