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:
Aug. 22, 2017
Filed:
Dec. 11, 2014
Michael a Smith, Clarkston, MI (US);
Kiran Premchand, Lake Orion, MI (US);
Homayoun Ahari, Bloomfield Hills, MI (US);
Jeffrey P Wuttke, Sterlings Heights, MI (US);
Brett Schubring, Macomb, MI (US);
Craig L Dimaggio, Troy, MI (US);
Michael G Zammit, White Lake, MI (US);
Michael T Vincent, Novi, MI (US);
Michael A Smith, Clarkston, MI (US);
Kiran Premchand, Lake Orion, MI (US);
Homayoun Ahari, Bloomfield Hills, MI (US);
Jeffrey P Wuttke, Sterlings Heights, MI (US);
Brett Schubring, Macomb, MI (US);
Craig L Dimaggio, Troy, MI (US);
Michael G Zammit, White Lake, MI (US);
Michael T Vincent, Novi, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A diagnostic system and method for diagnosing the performance of a particulate matter (PM) filter of an exhaust system each involve receiving, by a controller from at least one sensor, a gas component measurement of exhaust gas flowing through the exhaust system and the PM filter. The controller calculates a conversion efficiency of the gas component by the PM filter and compares the calculated conversion efficiency to a predetermined conversion efficiency threshold indicative of an expected conversion efficiency of a flow-through catalyst. The controller then determines whether the PM filter is cracked or damaged based on the comparison between the calculated conversion efficiency and the predetermined conversion efficiency threshold.