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. 06, 2015
Filed:
Dec. 17, 2012
James J Daley, Jackson, MI (US);
Robert J Jerger, Dexter, MI (US);
Wei-jun Yang, Farmington Hills, MI (US);
Jeffrey P Wuttke, Sterling Heights, MI (US);
Michael G Zammit, White Lake, MI (US);
Andrew Brocker, Jenison, MI (US);
James J Daley, Jackson, MI (US);
Robert J Jerger, Dexter, MI (US);
Wei-Jun Yang, Farmington Hills, MI (US);
Jeffrey P Wuttke, Sterling Heights, MI (US);
Michael G Zammit, White Lake, MI (US);
Andrew Brocker, Jenison, MI (US);
Chrysler Group LLC, Auburn Hills, MI (US);
Abstract
A catalyst degradation detection method for use with a zero ceria catalyst. The method uses techniques to measure transient responses to engine control events of upstream and downstream sensors to determine catalyst degradation and performance. By measuring transient behavior, the method can determine catalyst degradation and performance based on the limited oxygen storage of precious metal catalysts that do not include added ceria or other materials with high oxygen capture rates.