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. 15, 2013
Filed:
Aug. 12, 2010
Applicants:
Brett B. Thompson, Farmington Hills, MI (US);
Stephen Paul Levijoki, Swartz Creek, MI (US);
Inventors:
Brett B. Thompson, Farmington Hills, MI (US);
Stephen Paul Levijoki, Swartz Creek, MI (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A diagnostic control module includes a temperature gradient module. The temperature gradient module determines a temperature gradient across a selective catalytic reduction (SCR) catalyst of an exhaust system of an engine based on a plurality of temperature signals. A calibration module determines a weighted average based on the plurality of temperature signals. A SCR efficiency control module disables conversion efficiency monitoring based on the temperature gradient and the weighted average.