Patents by Inventor Kiran Premchand

Kiran Premchand has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Particulate matter filter diagnostic techniques based on exhaust gas analysis
    Patent number: 9739761
    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.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: August 22, 2017
    Assignee: FCA US LLC
    Inventors: Michael A Smith, Kiran Premchand, Homayoun Ahari, Jeffrey P Wuttke, Brett Schubring, Craig L Dimaggio, Michael G Zammit, Michael T Vincent
  • PARTICULATE MATTER FILTER DIAGNOSTIC TECHNIQUES BASED ON EXHAUST GAS ANALYSIS
    Publication number: 20160169784
    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.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 16, 2016
    Inventors: Michael A. Smith, Kiran Premchand, Homayoun Ahari, Jeffrey P. Wuttke, Brett Schubring, Craig L. Dimaggio, Michael G. Zammit, Michael T. Vincent